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Publication numberUS2072694 A
Publication typeGrant
Publication dateMar 2, 1937
Filing dateMar 24, 1933
Priority dateMar 24, 1933
Publication numberUS 2072694 A, US 2072694A, US-A-2072694, US2072694 A, US2072694A
InventorsWalter Charles T
Original AssigneeInd Patents Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Belly press
US 2072694 A
Images(4)
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Description  (OCR text may contain errors)

' March 2, 1937. V Q TJWALTER 2,072,694

I BELLY PRESS Filed March 24, 1935 4Sheets-Sheet l wl'rness BY W flame.

ATTORNEY March 2, 1937. c. T. WALTER 2,072,694

BELLY PRESS Filed March 24, 1933 4 Sheets-Sheet 2 EFF/ R a? m 6} Charles]? H dZzez' INVENTOR ATTORNEY March 2, 1937. c, WALTER 2,072,694

BELLY PRESS Filed March 24, 1953 4 Sheets-Sheet 5 .37 90 i as Cizarlesl'l lilzer INVENTOR I ATTORNEY C. T. WALTER March 2, 1937.

v BELLY PRESS Filed March 24, 1953 4 Shets-Sheet 4 Cizarles Z Walter.

INVENTOR ATI'ORNEY u 5 5 a a W I T N E 5 5 Jl- 11 W 3 W 4 9 8 a 5 WW 9 00w w m w w Patented Mir. 2, 1937 UNITED STATES BELLY PRESS Application March 24, 1933, Serial No. 662,496

29 Claims.

The invention relates and is applicable to a press for general use.

The invention particularly relates to a press for compressing bacon.

According to the invention, there is realized a commercial and practical machine which is simple in operation, efficient, and strong, and in which the parts are arranged so as to simultaneously apply downward pressure to a top por- 10 tion of a body being pressed or compacted, such as the large top portion of a bacon slab; lateral or transverse pressure to a side or side portion of the body; and longitudinal pressure to an end or end portion of the body; with the result that 15 the top and bottom faces of the body-as the bacon slabare flattened, and the side and end faces thereof are straightened and squared, whereby when the body is removed from the press, it is in the defined form of a well shaped 2o rectangular parallelepiped.

The present invention, from certain aspects thereof, may be considered as an improvement on a machine which is the basis of Patent No. 2,046,366, issued June 9, 1936, to Joseph Bech and entitled Bacon press". v

According to the construction of the press disclosed insaid Bech patent, and also according to the construction of the press illustrated and 'described in this application, there is employed in operative relationship and arrangement, a lower supporting die or bottom plate; a downwardly-movable or depressible, longitudinallyextending, pressure-resisting or side-resisting plate; a downwardly-movable or depressible, 35 transversely-extending, longitudinally-movable end-pressing plate; a longitudinally-extending, transversely-movable and longitudinally-shiftable side-pressing plate; and a vertically-movable, top-pressing plate which is forced down- 40 wardly'during the pressing operation toward the bottom or lower supporting plate but which is mounted sothat during its vertical movement it can shift longitudinally and also transversely over the depressible side and end-resisting plates 45 and also so that during its downward movement it moves vertically along the pressing surfaces of the side andend-p'ressing plates.

In the Bech patent and also in the present application, the arrangement is such that the de- 50 pressible end-resisting plate can shift in a transverse direction across but closely in respect to one end, to wit, the forward end of the depressible side-resisting plate; so that the end-pressing plate moves longitudinally along the supporting 55 plate and also along and in close relationship with respect to the depressible side-resisting plate; so that the side-pressing plate can be moved transversely across the supporting plate and along the end-pressing plate but so that the side-pressing plate can shift longitudinally with 5 and as the end-pressing plate is moved longitudinally in a forward direction; and also so that an end of the end-resisting plate-which end-resisting plate is shiftable in 'a transverse direction-is maintained in close arrangement with respect to the side-pressing plate as the latter is forced in a transverse direction as the pressing operation proceeds.

According to the specific disclosure of the Bech patent, the top-pressing plate thereof is operated .by one power-operating cylinder, the side-pressing plate thereof is operated by another poweroperating cylinder, and the end-pressing plate thereof is operated by a third power-operating cylinder. According to the drawing of said Bech patent, each of these cylinders is separately controlled. According to the present invention, a common operating means is employed whereby as from a common operating cylinder or other common opcrating means, the top-pressing plate, the sidepressing plate, and the end-pressing plate, are caused to automatically operate to effect a pressing operation by the single movement of the piston within the single operating cylinder or by the single movement of a common operating member.

Also according to the present invention, certain floating levers are employed whereby the desired degree of pressing effect is automatically realized as the common operating member such as the pressing cylinder functions to effect the desired movements of the several pressing plates during the pressing operation.

It is desirable in machines of this class to 40 have certain predetermined dimensions for the resulting pressed product or body. I For-example, it is desirable to press a bacon slab to a definite thickness and to a definite width so that when the bacon slabs are subsequently subjected to slicing'operations, such as is common in the packing industry or butchering business of today,

the resulting slices of uniform thickness will be of uniform weight, thus facilitating the realization of a standard weight of a package.

As a further example, it may be desirable to obtain six slices of uniform thickness and area. in order to-provide a group of one-half pound, and such a grouping is enabled and realized if the cross-sectional area of a baconslab is pro- PATENT orricsif duced by a proper pressing and shaping operation.

One object or aspect of the present invention relates to the provision of a press with suitable stops, whereby the top-pressing plate and the side-pressing plate will each be automatically arrested as to its pressing movement when the desired slab thickness and width are obtained. However, the arrangement is such that even though the top-pressing plate and the sidepressing plate have ceased to move because of the functioning effects of the stops, the endpressing plate can continue to move until the desired degree of pressure or pressing effect has been realized on the slab or body as a whole being pressed.

With these and other objects in view, the invention consists in the construction and novel combination and arrangement of parts hereinafter fully described and illustrated in the accompanying drawings and pointed out in the claims hereto appended, it being understood that vlarious changes in the form, proportion and minor details of construction, within the scope of the claims, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

As illustrative .of a specific manner in which the invention may be realized, reference is made to the accompanying drawings forming a part of this specification.

Figure 1 is a vertical, longitudinal view, mostly in section, illustrative of a press that realizes the invention. Figure l is a view taken as on the vertical plane indicated by the broken line l-I of Figure 2, looking in the direction of the arrows.

Figure 2 is a plan view of the press but from this figure, there has been omitted' the toppressing plate and certain of the operating and carrying members therefor.

Figure 3 is a vertical, transverse, sectional view, taken as on the plane indicated approximately by the line 3-3 of Figure 2, looking in the direction of the arrows.

Figure 4 is a plan view of the top-pressing plate and of some of the operating and carrying members therefor.

Figure 5 is a perspective view simplified to show the operation of the device.

The press comprises a main frame collectively designated as F, a collapsible and expansible pressing die collectively designated as PD, operating mechanism OM, and a power-operating means PM providing a common operating means for moving the pressing plates of the pressing die through the medium of the operating mechanism OM.

The press is also provided with a stop for limiting the downward movement of top pressing plate, which stop is sometimes meme- 1 to as the top-pressing plate stop and is collec-K tively designated as TS. This stop is clearly indicated in Figure 1. The press is furthermore provided with a stop for limiting the transverse movement of the side-pressing plate, which stop is sometimes referred to as the side-pressing plate stop and is collectively designated as SS. The members constituting the important part of this stop SS are clearly indicated in Figure 3, particularly when viewed in conjunction with Figure 2.

Frame The frame F of the machine comprises up- Pressing die I The pressing die PD includes a lower horizontally-extending supporting member or bottom die plate 6 which may be described as having a supporting surface thereupon which extends both longitudinally and transversely, that is, in what may be termed the longitudinal direction of the press and in what may be termed the transverse direction of the press. This bottomsupporting plate 6 is fixedly secured to the main frame and is stationary, as is manifest from an inspection of Figures 1 and 3. At the left-hand side of Figure 3, there is clearly indicated a longitudinally extending side-resisting plate I which is mounted in respect to the bottom-supporting plate 6 in such a manner that the side-resisting .plate is depressible, that is, movable vertically downwardly along the longitudinal edge of the supporting plate 6 as the pressing operation proceeds. This side-resisting plate is normally maintained in its uppermost position under the infiuence of a coiled spring 8, the lower end of which spring is welded or otherwise fastened to head 9 on a red I 0. The upper part of spring 8 is suitably welded or otherwise fastened to angle ll, tending to normally force the sideresisting plate 1 in an upward direction to its uppermost position. The arrangement of the parts just mentioned is manifest from an in-, spection of Figures 2 and 3. Further details of mounting this side-resisting plate are illustrated and described in the Bech patent. The die press also includes an end-resisting plate l2 which is clearly indicated and shown in Figures 1 and 2.

The end-resisting plate I2 is mounted in a slideway frame l3 which has a fixed association with respect to the bottom-supporting plate 6. This frame I 3 has slidably mounted thereupon, so that the end-resisting plate l2 can shift in a transverse direction in respect to the press, a carrier member M from which there are supported rods l4 each of which has a head l5 at the lower end thereof for supporting the coiled spring 8 that is relied upon to maintain the endresisting plate I! in its uppermost position when allowed to do so, spring 8 being welded or otherwise fastened to member l4 and bolt head l5. This end-resisting plate I2 is depressible against the force of the spring as the pressing operation proceeds and it may be described as the transversely-extending vertically-depressible and transversely-shiftable end-resisting plate with which the die press is provided. This end-resisting plate I! is maintained in close arrangement with respect to the forward end of the side-resisting plate 1 whereby the resisting plates are always in cooperative arrangement with respect to each other. It will also be noted that the resisting plates 1 and I2 may be described as being maintained in cooperative relationship with respect to the bottom-supporting plate 6 with which they are directly associated. The transverse shifting of the end-resisting plate l2 can take place because of a yieldable transverselyextending spring l6, clearly indicated in Figure 2. The details of this end-resisting plate and its mode of support are fundamentally the same as the corresponding parts shown in the Bech patent heretofore mentioned.

The die press also includes a side-pressing plate 11 and an end-pressing plate I8. The endpressing plate l8 extends transversely of the press and it is mounted so that it is moved longitudinally in a forward direction during a pressing operation over and along the bottom-supporting plate 6 with which it is directly associated. One end of the end-pressing plate I8 is arranged close to the side-resisting plate i so that there is a cooperative arrangement which always exists between the side-resisting plate and the end-pressing plate. The side-pressing plate [1 extends longitudinally of the press; it is mounted so that it can move during a pressing operation transversely in what may be termed an inward direction and so that it can shift longitudinally as the pressing operation proceeds.

-As a matter of fact, this-side-pressing plate H is arranged so that the rear end thereof always remains in close arrangement with respect to the end-pressing plate I8 due to the action of lug T8 and the side-pressing plate l'l moves in a longitudinal direction in accordance with the longitudinal movements of the end-pressing plate IS. The end-resisting plate i2 is arranged so that what may be termed the outer end thereof is maintained in close operative arrangement with respect to the side-pressing plate l1 and so that the end-resisting plate I2 moves'transversely inwardly as the side-pressing plate I! moves transversely inwardly but the arrangement is also such that the side-pressing plate I! can. move longitudinally in respect to said outer end of the transversely-extending end-resisting plate H2.

The die press PD is completed by the toppressing plate l9 which is carried from a top yoke 28 in such a manner that the top-pressing plate can move horizontally in either a longitudinal or transverse direction as the pressing operation proceeds. The yoke 28 is movable downwardly so that as it moves downwardly, it can impart a downward pressing movement to the top-pressing plate l9 carried thereby. The operative arrangement ,of this top-pressing plate in respect to the rest ,of the plates of the die press is such that during the pressing operation one ,end and one sid of the top-pressing plate move downwardly along and in close arrangement with the pressing faces of the end-pressing plate l8 and the side-pressing plate H. The arrangement is also such that as the pressing operation proceeds, the-underside or pressing surface of the top-pressing plate l9 engages the top or upper edge portions of the side-resisting plate 1 and the end-resisting plate l2, whereby said resisting plates are depressed according to the requirements of the pressing operation. The top-pressing plate H has mechanism associated therewith so that as the pressing operation proceeds, it moves in a longitudinal direction in accordance withthe longitudinal movement of the endpressing plate l8 and in a transverse direction in accordance with the transverse movement of the side-pressing plate 11.

The mounting of the top-pressing plate IS on the yoke .carrying the same is constructed so as 'to permit this longitudinal and transverse shifting of the top-pressing plate l8 according to the requirements because of the transversely-extending grooved sli'deway construction provided at 2|, as is manifest from an inspection of Figure 1, and because of the longitudinally-extending grooved slideway construction 22, as is manifest from an inspection of Figures 1 and 3. The description of the mechanism whereby the pressing plates l1, l8 and I9 receive their operative movements will be described under the heading Operating Mechanism. It will be noted that the die press of the present application is of a construction wherein during a single pressing operation the die press is contractible in'every direction no matter from what direction viewed. In short, this press is contractible in a vertical direction, in a horizontal transverse direction, and in a horizontal longitudinal direction, and it will be noted that the movable pressing plates of this press are all operated from a common source of power through a link and lever mechanism which causesand enables the desired contraction of the press as the result of a single movement of an operating plunger or member of the power-operating means. The press die just described may be described as a confining pressing die since the several parts composing the same are constructed and arranged so that during all parts or steps of the pressing operation a piece being pressed is always confined within and by the die which decreases in all directions as the pressing operation proceeds.

The operating mechanism and the poweroperatzng means In Figures 1 and 3, it will be' noted that the lower side bars 2 of the main frame have secured thereto and depending therefrom lower main bearing members 23 in which there are supported the ends 24 of a transversely-extending power transmission shaft 25. This shaft 25 has thereupon a main crank arm 26 constituting part of the operating mechanism therefor, the outer end 21 of which crank arm is connected by a suitable member or connecting element as 28 to a forward end of a rod 29 of a piston 30. This piston is slidably mounted in an operating cylinder 3|. This cylinder has fluid under pressure supplied thereto through a pipe 32 for actuating the piston, the flow of which fluid through the pipe 32 to the cylinder 3| is under the control of a valve mechanism collectively designated as 33. That part of the mechanism just mentioned which includes the crank arm 26, the connecting element 28, the piston 30, the cylinder 3|, and the valve-controlled pipe 32 leading to the cylinder, collectively may be referred to as the power-operating means PM. The mechanism which includes the shaft 25 and the parts operated therefrom for effecting movement of the pressing plates i1, l8, and I9 may collectively be designated and considered as the operating mechanism QM, previously referred to.

Reference to Figures 1, 2, and 3, and particularly to Figure 2, discloses the fact that the frame carriesbracket members 34 and 35, the former of which may be referred to as a side bracket and the latter of which may be referred to as an end bracket, and in which brackets, there are slidably mounted what may be termed, respectively, side and end yoke-connecting and spacing rods, 36 and 31, which rods are more clearly shown in Figures 1 and 3. It will be seen that on each bracket, there is carried a spool member 38 which is shouldered or flanged at the lower end. Each member 38 serves as a member to position and support the lower end of a heavy coiled spring 39. To the lower ends of these rods, there are connected ends 48 and 4| of a lower yoke 42 and to the upper ends of these rods, there are connected the ends 43 and 44 of the upper yoke member 20, previously referred to. The yoke members 29 and 42 extend diagonally in respect to the pressing die PD and they are arranged for impartingheavy pressing effects in a downward direction to and through the upper pressing plate I 9. The heavy coiled springs 39 are sufficiently strong and powerful to maintain in an elevated position the yokes and 42, and the parts carried thereby and connected thereto. These springs 39 and the associated springs in the press are in fact sufliciently powerful to return 7 the top-pressing plate IS, the associated side and end-pressing plates l1 and I8, and the operative parts associated with said pressing plates to their respective normal inoperative positions when allowed to do so after the completion of a pressing operation.

The main or power-transmitting shaft carries a main operating arm 45 constituting a part of the operating mechanism OM which is operated by the power-operating mechanism through the medium of said shaft 25. At the free end 46 of the arm 45, there is connected a verticallyextending link 41 which constitutes a pulling element of the operating mechanism or what may be termed the main operating link mechanism. The upper end 48 of this link 41 is pivotally connected to what may be termed the intermediate or central portion of a main floating or equalizing lever 49. It will be noted, however, that this point of, connection is'nearer one end of the lever 49 than it is to the other end, whereby there results what may be called a main floating lever having a long and a short arm. The short arm of this lever carries a ball and socket or universal joint connection 50, as is clearly indicated in Figures l and 3, whereby from the short arm of the lever 49, there is a pivotal connection to an intermediate or central section of what may be termed a secondary floating or equalizing lever 5| which likewise is connected in such a manner as to pro,-

vide a short arm and a long arm therefor. The

,- end of the short arm of the secondary floating lever 5| is connected by a suitable link 52 to the lower yoke member 42, previously described, as is manifest from an inspection of Figure 3. The mechanism which includes the floating lever 5|, the link 52, the yoke 42, and the parts between the yoke 42 and the top-pressing plate l9 may be collectively referred to as the top-pressing plate link mechanism and which is part of the mechanism whereby the top-pressing plate is caused to move downwardly as the main arm 45 'on the main shaft 25 is caused to swing in a downward direction underthe influence of the common power-operating means PM.

The long arm of the secondary floating lever 5| is connected at 53 to a vertically-extending link 54, the upper end of which link is connected at 55 to an arm 56 of a bell crank lever 51 which is fulcrumed on a shaft 58 that is in turn pivotally mounted in bearing members 59 mounted on the main frame of the machine. This bell crank lever.51 includes an upstanding arm 60, the upper end of which is pivotally connected at 6| to a pin 62 that is mounted in-link 63 located at the outer end of a sliding rod 64 having at the inner endthereof a longitudinally-extending guideway 65 upon which the longitudinally-extending sidepressing plate I1 is mounted so that the sidepressing plate can shift in a longitudinal direction as the pressing operation proceeds. Plate I 1 is held in close arrangement with plate I8 longitudinally extending rods during its sliding movement on, guideway 65 by means of lug 18. This rod 64 through'the medium of the guideway portion 65 at the inner end thereof serves to force the side-pressing plate l1 transversely and inwardly during a pressing operation. This inward movement of the sidepressing plate is effected by the downward movement of the secondary floating lever and the downward movement of the free end 53 of the long arm thereof and the consequent corresponding movements of the parts connecting the end 53 of the long arm to the rod 64 and the sidepressing plate H at the inner end thereof. This mechanism, which comprehends the end 53 of the secondary floating member 5| and the parts 54, 51, 62, 63, 64, 65, et cetera, constitutes what may be collectively referred to as the side-pressing plate link mechanism and because of the bell crank member 51 therein, it may be referred to as a mechanism which includes as an essential part thereof a bell crank member.

The secondary floating lever 51 is centrally pivotally connected so that it is free to float and adjustitself to pressure conditions, and it will,

therefore, be manifest that both the top-pressingplate and the side-pressing plate can be moved thereby until one or the other is stopped because of undue pressure exerted thereagainst or because of the stop arrangements hereinafter described. Therefore, this floating lever 5| may be considered as'a pressure-equalizing lever and this same remark also applies to the floating main lever 49.

Now, reverting to the main floating lever 49 and to Figures 1 and 5, wherein the same is clearly shown, it will be noted that the free end 66 of the long arm thereof is pivotally connected to the lower end of an upwardly-extending link 61, the upper end of which is pivotally connected at 68 to the free end of an arm 69 of a bell crank lever or bell crank lever construction 10. This bell crank lever 10 is fulcrumed on a shaft 1L which is pivotally mounted in bearings 12 carried vby the main frame and the free end cf an upwardly-extending arm 13 of the bell crank lever 10 is pivotally connected through the medium of a link 14 to the rear end of a longitudinallyell) movable and longitudinally-extending pusher member or rod 15, the forward end of which is connected at 16 to the transversely-extending end-pressing plate Ill. The mechanism which includes the long arm of the floating lever 49, the link 61, the bell crank lever 10, the link 14, and push rod 15 to which the end-pressing plate I8 is connected, may be referred to as the endpressing plate link mechanism and it may be described as comprehending a bell crank lever construction because of the inclusion therein of the bell crank lever 10.

Referring now to Figures 1, '2, and 5, it will be observed that stationary angle members 11 are provided for the reception of rods 8| carrying coilsprings 85. This pair of springs, 85 serves to normally assist in retracting the end-pressing plate I8 to its rearwardmost position when free to do so after a pressing operation has been carried out. The angle members 11 previously mentioned being fixed, serve as abutments for the forward ends of the springs 85.

When pressure is asserted through link 14,

moving plate l8 and pusher rod 15 forwardly,

19, securely fastened to cross plate 80, compress coil springs 85. Plate is designed with apertures permitting the passage therethrough of rods 8|. A'vertical yoke member 42.

pushing member 82 is provided on the end of plunger or pushing plate 15. Member 82 is designed to produce the endwise motion of top pressing plate 19. Guiding member 83 is mounted on vertical rod 82 so that it is free to move vertically along the upright rod 82. This transversely-extending guideway 83 has slidably mounted therein a transversely-movable connecting member 84 which is directly secured to the top-pressing plate in a manner whereby, due to the mechanism just described, the top-pressing plate will move longitudinally in accordance with the longitudinal movements of the end-pressing plate but so the top-pressing plate can shift transversely as required in order to meet the different conditions of the pressing operation. In other words, due to the construction just described, the top-pressing plate is always maintained in proper operative position in respect to the end-pressing plate so that upon downward pressure being applied to the top-pressing plate, it can automatically move downwardly along the pressing face of the end-pressing plate.

Reference will now be made to Figures 2, 3 and 5 for showing an arrangement for effecting the transverse movement of the top-pressing plate as the side-pressing plate is moved. In the figures last mentioned, it will be noted that stationary angle members 86 serve as spring abutments for coil springs 93 disposed on spaced parallel laterally extending rods 81. The design of the side-pressing retracting mechanism is identical to that of the end-pressing retracting mechanism. The forward movement of pusher plate 64 is retracted by the coil springs 93. Mounted on plunger or pusher plate 64 is a vertical member 89 along which there is a vertically sliding yoke member 98 which is connected to rod 9| that are secured at 92 to the transversely-movable guideway member 22'and due to the construction just described, the top-pressing plate must move transversely in accordance with the transverse movement of the side-pressing plate I! but the arrangement is such that the top-pressing plate is 'always maintained in a position whereby upon being .depressed, an edge portion thereof can move downwardly and in cooperative relationship with respect to the pressing face of the side-pressing plate. Coiled compression springs 93 serve to assist in retracting the side-pressing plate and the parts associated therewith when free to do so at the end of a pressing operation.

Top-pressing plate stop The top-pressing plate stop, collectively designated by TS, is shown in Figures 1 and 2 and it collectively comprises a depending bracket member 94, the upper end of which is fixedly secured to the main frame of the machine as through suitable connecting bolts 85, and the lower end of which is screw-threaded as at 96 for the reception of an adjusting stop screw 91. This adjusting screw is in line with the lower end of the rod 31 or, in other words, in line with the axis of the opening at the end 40 of the lower yoke member 42. The lower end of the rod 31 and the holding nut 98 thereupon collectively constitute what may be termed as a movable stop member that is carried by the lower At the upper end of the adjusting stop screw 91, there is mounted a lower stop member 99 which is relatively stationary but which can bevertically adjusted according to the requirements. At the upper end of this member 99, there is carried a removable part 99. There may be a number of these parts 99 of different depths or thicknesses and these may be used and selected one block at a time, according to the desired thickness required for the final product. In other words, by employing the proper member 99, one can regulate or determine the thickness or depth of the resulting product as pressed between the lower-supporting plate 6 on the one hand and the top-pressing plate I9 on the other hand.

The structure just referred to constitutes what is herein termed as the top-pressing plate stop because its direct function is to limit the downward movement of the top-pressing plate and thereby determine the extent of its pressing operation. One or more of these stops may be employed, as desired.

Side-pressing plate stop There are blocks IOI which are rigidly but detachably secured to the sliding plunger or pusher plate 64. These detachably secured blocks llll may be secured in place as by means of pegs I82 rigidly fastened to the blocks and adapted to fit snugly into the holes in the plunger member. By such a fastening means, these blocks IOI may be easily and quickly changed. The purpose thereof and the desirability of changing them are to provide an adjustable control means for regulating the length of the stroke of the side-pressing plate plunger 64. In operating the side plunger, it will be noted that it will move inwardly toward the center of the press until the blocks llll strike the bridge or stationary. stop member Hill, at which point the side plunger can and will come to rest, thereby limiting the side or transverse compression of the bacon slab or other product being pressed and thereby controlling the transverse dimension thereof.

For different weight classifications of bacon slabs, it will be necessary to have this transverse dimension variable and this is accomplished by providing blocks ll of different lengths for limiting the compression in a transverse direction of the bacon slabs being pressed.

General From what has preceded, it will be manifest that by adjusting the stop member 99, or, in other words, by properly selecting the required block member 99" therefor, the vertical dimension of the final product can be controlled. By properly selecting the side blocks lfll, the transverse dimension of the resulting product can be controlled, and due to the floating leveror equalizing lever-construction described, it will be manifest that the press can operate in such a manner that it is immaterial which stop first comes into play to function in stopping the movement of the part controlledthereby. It will be apparent that it is possible for the toppressing plate to come to final pressing position; that it is possible for the side-pressing plate to thereafter come to final pressing position; and for these movements to be followed by a further compressing, due'tothe end-pressing plate continuing to move. Consequently, when the desired pressing effect has been carried out, there is produced a product of predetermined thickness, of predetermined transverse dimension or width, but of indefinite length, to wit, of a length according to the volume of material in the particular product being pressed.

Where bacon is being pressed, the fixed crosssectional dimensions will be classified according to the number of slices per unit of weight and approximate width of the bacon slabs being pressed. With this classification, it will be necessary only to change the side-pressing plate stops to meet the classification and it will not be necessary to change these blocks for each piece of bacon that is pressed, provided the bacon has been classified into groups and all the individual pieces in a given group are pressed before operating on another group. It is quite feasible to have the press accompanied by a simple table which will instruct the operator as to the proper combination of the blocks I0! and 99 to be used for the control of the motion of the side-pressing plate plunger and the top-pressing plate for each given classification of bacon. In the form of machine shown, a single top-pressing plate stop is illustrated. It will be manifest, however, that it will be feasible to use a duplicate set of these top-pressing plate stops, for example, one at each end of the lower yoke 42.

What is claimed is:

1. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate;

a common operating means comprising a main floating lever having a pivotal movement on an axis located intermediate the ends of the main floating lever and forming a long arm and a short arm; a secondary floating lever also having pivotal movement on an axis located intermediate the ends of the secondary floating lever and forming a long arm and a short arm; a toppressing plate link mechanism; a side-pressing plate link mechanism; an end-pressing plate link mechanism; a main operating lever mechanism; and an operating cylinder and piston, the piston being connected to one portion of the main linkoperating mechanism; the main floating link having the central or intermediate section thereof pivotally connected to another portion of the main link-operating mechanism, the end-pressing plate link mechanism serving as a means whereby the long lever arm of the main floating link is connected to the end-pressing plate so as to effect pressingmovement of the latter, which end-pressing plate link mechanism includes a bell crank lever as a part of the train of said link mechanism, the secondary floating lever having the central or intermediate portion thereof pivotally connected to the short lever arm of the main floating lever, the top-pressing plate link mechanism serving as means for connecting the short arm of the secondary floating lever with the members that impart downward pressing movement to the top-pressing plate, the sidepressing plate link mechanism serving as means to connect a long arm of the said floating-secondary lever to the side-pressing plate, which side-pressing plate link mechanism includes a bell crank lever'as a part of said link mechanism.

2. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a power operating mechanism common to the pressing plates having a single controlling device and comprising a main floating lever having pivotal movement on an axis intermediate the ends of the main floating lever and forming a long arm and a short arm; an operating cylinder; a piston therein; a bell crank mechanism, one arm of which is operated by the piston and the other arm of which is connected to the main floating lever; a secondary floating lever; a toppressing plate link mechanism; a side-pressing plate link mechanism; an end-pressing plate link mechanism; the end-pressing plate link mechanism being associated with the long lever arm of the main floating link and serving as the means through which the end-pressing plate is moved to full pressing position; the secondary floating lever being pivotally supported by and carried from the short arm of the main floating lever; the top-pressing plate link mechanism being associated with one arm of the secondary lever and serving as means through which the toppressing plate is moved downwardly to full pressing position; the side-pressing plate link mechanism being associated with another arm of the secondary lever and serving as means through which the side-pressing plate is moved to full pressing position.

3. In a press, the combination with a contractible die having a plurality of movable pressing elements, of an equalizing lever mechanism including longitudinal and transverse floating levers through which the pressing forces are transmitted from a common source of operating power to the movable pressing elements.

4. In a press having a stationary bottom die plate, depressible sideeresisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a common-operating means mounted on the frame and having an operating member extending therefrom, a main floating lever, the intermediate portion of which is operatively connected with said operating member so as to provide the main floating lever with a short arm and a long arm, a secondary floating lever, the intermediate portion of which is operatively connected with the short arm of the main lever so as to provide the secondary lever with a short arm and a long arm, three sets of connecting means, one of which sets serves to connect the short arm of the secondary floating lever with one of the movable pressing plates, another of which sets serves to connect the long arm of the secondary lever with another of the movable pressing plates, and the third set of whichserves to connect the long arm of the main floating lever with the other of the movable pressing plates, two of said movable pressing plates having associated therewith movable stop elements, each of which movable stop elements cooperates with a corresponding stationary stop element secured to the frame, said stationary stop elements being arranged so that as a pressing operation proceeds the two pressing plates having the movable stop elements associated therewith may be automatically stopped against further pressing movement but under conditions which allow a movement of the other pressing element to full pressing position.

5. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a common operating mechanism for effecting during a single operation thereof-movement of the movable plates including means for moving the top-pressing plate towards the stationary plate, means for moving the side-pressing plate towards the side-resisting plate, and means for moving the end-pressing plate towards the end-resisting plate.

6. In a press having a stationary bottom die plate, depressible. side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a common operating means for efiecting during a single operation thereof the movement of the toppressing plate towards the stationary plate, of the side-pressing plate towards the side-resisting plate, and of the end-pressing plate towards the end-resisting plate, a set of stop elements, one of which elements is associated with one of the pressing plates and the other of which is stationary, one of said stop elements being positioned in respect to the plate by which it is carried whereby the extent of pressing operation by the particular plate with which the stop element is operatively associated can be regulated.

7. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate;

1 a power operating means common to said pressing plates, said common-operating means comprising a main floating lever, a member pivotallyconnected with the main floating lever intermediate the ends thereof for forcibly moving the main floating lever towards full pressing position, link mechanism operatively connected with one end of the main floating lever for moving to pressing position one of the pressing plates, a secondary floating lever pivotally connected intermediate its ends with the other end of the main floating lever, mechanism operatively connected with one end of the secondary floating lever for eflecting movement to pressing position of another of said pressing plates, and means operatively connected with the other end of the secondary-floating lever for effecting movement to pressing position of the third of said pressing plates.

8. In a-pressas definedin and by claim '7, two

sets of stops one of which sets is associated with the top-pressing plate and a stationary part, to

wit, the frame of the press, and the other of which sets is associated with the side-pressing plate and a stationary part, to wit, the frame of the press.

9. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a common operating means for eifecting pressing movement of the top-pressing plate, the sidepressing plate and the end-pressing plate, and means for operatively positioning-said top-pressing plate with relation to said side-pressing and end-pressing plates throughout the operation of said common operating means.

10. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end platesand said top-pressing plate being in operative relation with said stationary plate; a common operating mechanism including a floating lever and means operatively connected with the floating lever and actuated by the same during a single operation of the said mechanism for efiecting movement of the said pressing plates.

11. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a common operating mechanism including a float lever, means operatively connected with the floating lever and actuated by the same during a single operation of said mechanism for effecting movement of said pressing plates and two sets of stops, one of which sets is associated with one of the pressing plates and. a stationary part of the press, the other of which sets is associated with another of the pressing plates and a stationary part of the press, each of which sets is constructed so as to provide a positionable stop member.

12. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said toppressing plate being in operative relation with said stationary top-pressing plate with relation to said side pressing and end-pressing plates throughout the operation of said common operating means.

13. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a power operating means common to said pressing plates, said common operating means comprising a floating lever that is pivotally connected intermediate its ends to aomember which forcibly moves the floating lever toward full pressing position, from one end of which floating lever one of said pressing plates is operated, and from the other end of which floating lever the other pressing plates are operated.

14. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a common operating means having a single controlling device for actuating said movable pressing plates and for forcing the same toward full pressing position, means associated with said opcrating means for operatively positioning said top pressing plate with relation to said side-pressing and end-pressing plates throughout the operation of said common operating meansand automatically operable auxiliary means cooperating with said actuating means for returning the movable pressing plates to their initial position.

15. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a common operating means having a single controlling device for forcing said movable pressing plates in a manner to effect a contracting of the die in all directions as the pressing operation proceeds, means associated with said operating means for operatively positioning said top-pressing plate with relation to said sidepressing and end-pressing plates throughout the operation of said common operating means and automatically operable yieldable means cooper ating with the common operating means to return the pressing elements to their initial position.

16. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a pressing cylinder having a piston operatively mounted therein, and operating means whereby from said piston said pressing plates are moved to full pressing position, said operating means comprising a main floating or compensating lever operatively moved by said piston, a secondary floating or compensating lever operatively moved by one arm of the main lever, means for connecting another arm of the main lever to one of the movable pressing plates, and means for connecting the ends of the secondary lever to the other of said movable pressing plates.

17. In a press having a stationary bottom die plate, depressible side-resisting and end-resist-' ing plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a pressing cylinder having a piston operatively mounted therein, and operating means whereby from said piston said pressing plates are moved to full pressing position, said operating means comprising a main floating or compensating lever operatively moved by said piston, a secondary floating or compensating lever operatively movedby one arm of the main lever, means for connecting another arm of the main lever to one of the movable pressing plates, means for connecting the ends of the secondary lever to the other of said movable pressing plates, and two sets of stop elements, one stop element of each of the'sets being positionable, one of which sets has a stop element operatively associated with one of the pressing plates while the other stop element thereof is mounted on the frame, and the other of which sets'has a stop element operatively associated with another of the other pressing plates while the other stop element thereof is mounted on the frame.

18. In a press having a stationary bottom die' plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate a being in operative relation with said stationary plate; an equalizing lever mechanism including a plurality of floating levers through which the I pressing forces are transmitted from a common source of operating power to the movable pressing plates and a set of positionable stop elements, one of which stop elements is operatively associated with one of the pressing plates and the other of which is mounted on a stationary part of said press.

19. In a press having a stationary bottom die plate, depressible, side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates,.a top-pressing plate, each of said side and end plates and said top pressing plate being in operative relation with said stationary plate and means for slidably mounting said top-pressing plate to provide sidewise and endwise movement of said plate while being pressed; guide means controlled by the movement of said sidepresslng and endpressing plates for moving said top-pressing plate to maintain a positive operative relation between said side-pressing and end-pressing plates throughout the pressing movement.

20. In a press having a stationary bottom die plate, depressible sideresisting and end-resisting plates, slidable side-pressing and end-pressing plates, a top-pressing plate, each of said side I and end plates and said top-pressing plate being in operative relation with said stationary plate and means tor slidably mounting said top-pressing plate to provide sidewise and endwise movement of said plate while being pressed; guide means controlled by the movement of said sidepressing and end-pressing plates for moving said top-pressing plate to maintain a positive operative relation between said side-pressing and endpressing plates throughout the pressing movement and a set of positionable stop elements, one of which stop elements is operatively associated with one of the pressing plates and the other of which is mounted on a stationary part of the press.

21. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate and means for slidably mounting said top-pressing plate to provide sidewise and endwise movement of said plate while being pressed; guide means controlled by the movement of said side-pressing and end-pressing plates for moving said toppressing plate to maintain a positive operative relation between said side-pressing and endpressing plates throughout the pressing movement, and two sets of stops, one of which sets is associated withone of the pressing plates and a stationary part of the press, the other of which sets is associated with another of the pressing plates and a stationary part of the press, each of which sets is constructed so as to provide a positionable stop member.

22. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with'said stationary plate and means for slidably mounting said top-pressing plate to provide sidewise and endwise movement of said plate while being pressed; guide means controlled by the movement of said sidepressing and end-pressing plates for moving said top-pressing plate to maintain a positive operaland end-pressing aovaeos tive relation between said side-pressing and endpressing plates throughout the pressing movement and automatically operable yieldable means associated with said side-pressing and endpressing plates to" return said side-pressing and end-pressing plates to their initial position after completion of the pressing movement, which yieldable means through said guide means also serve to return said top-pressing plate to its initial sidewise and endwise position after completion of the pressing movement. f,

23. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate and means for slidably mounting said top-pressing plate to provide sidewise and endwise movement of said plate while being pressed; means operable from a common source of power for eiiecting pressing movement of said side-pressing, end-- pressing and top-pressing plates, and guide means controlled by the movement of said sidepressing. and end-pressing plates for moving said top-pressing plate to maintain a positive operative relation between said side-pressing and endpressing plates throughout the pressing move-' ment, said guide means comprising a guide rod rigidly secured to said side-pressing means and said top-pressing plate and a guide rod rigidly secured to said end-pressing means and slidably connected to said top-pressing plate.

24. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, a top-pressing plate, each oi said side and end plates and said top-pressing plate being in operative relation with said stationary plate and means for slidably mounting said top-pressing plate to provide sidewise and endwise move-' ment of said plate while being pressed; means operable from a common source of power for eiiecting pressing movement of said side-pressing, end-pressing and top-pressing plates, guide means controlled by the movement of said sidepressing and end-pressing plates for moving said top-pressing plate to maintain a positive operative relation between said side-pressing and endpressing plates throughout the pressing movement, said guide means comprising a guide rod rigidly secured to said side-pressing means and said top-pressing plate and a guide rod rigidly secured to said end-pressing means and slidably connected to said top-pressing plate, and a set of positionable stop elements, one of which stop elements is operatively associated with one of the pressingv plates and the other of which is mounted on a stationary part of the press.

25. In a press having a stationary bottom die a plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate and means for slidably mounting said top-pressing plate to provide sidewise and endwise movement oi said plate while being pressed; means operable from a common source of power for effecting pressing movement of-said side-pressing, endpressing and top-pressing plates, guide means controlled by the movement 0! said side-pressing plates for moving said topmaintain a positive operative pressing plate to said side-pressing and endrelation between part pressing plates throughout the pressing 'r novement, said guide means eompriginfa guide rod rigidly secured to said side pressing means and said top-pressing plate/and a guide rod rigidly secured to said end-pressing means and slidably connected to said top-pressing plate, and automatically/operable yieldable means associated with/said side-pressing and end-pressing plates plates to their initial position after completion or the pressing movement, which yieldable means through said guide means also serve to return said top-pressing plate to its'initial sidewise and endwise position after completion of the pressing movement.

26. In a press having a stationary bottom die plate, depressible side-resisting and end-resist1n8 plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each 0! said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a common operating means having a single controlling device for actuating said movable pressing plates and for forcing the same toward full pressing position, and means associated with said operating means for operatively positioning said top-pressing plate with relation to saidside-pressing and end-pressing plates throughout the operation of said common operating means.

'27. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a common operating means having a single controlling device for forcing said movable pressing plates in a manner to eflect a contracting of the die in all directions as the pressing operation proceeds, and means associated with said operating means for operatively positioning said toppressing plate with relation to said side-pressing and end-pressing plates throughout the operation of said common operating means.

28. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and said top-pressing plate being in operative relation with said stationary plate; a set of stop elements, one of which elements is associated with one of the pressing plates and the other of which is stationary, one of said stop elements being positioned in respect to the plate by which it is carried whereby the extent of pressing operation by the particular plate with which the stop element is operatively associated can be regulated.

29. In a press having a stationary bottom die plate, depressible side-resisting and end-resisting plates, slidable side-pressing and end-pressing plates, and a top-pressing plate, each of said side and end plates and-said top-pressing plate being in operative relation with said stationary plate; two sets of stops, one of which sets is associated with one oi the pressing plates and a stationary of the press, the other of which sets is associated with another of the pressing plates and a stationary part of the press, each of which sets is constructed so as to provide a positionable stop member.

CHARLES T. WALTER.

' .to return said side-pressing and end-pressing CERTIFICATE OF CORRECTION.

Patent No. 2,072,694. March 2, 1937.

CHARLES T. WALTER.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1 first column, line 24, for the patent number "2,046,366" read 2,043,366; page '7, second column, line 19, claim 11, for the word "float" read floating; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 20th day of April, A. D. 1937.

Henry Van Arsdale (Seal) Acting Commissioner of Patents.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2424906 *May 3, 1946Jul 29, 1947Sharrock James CDental press
US2446038 *Nov 29, 1943Jul 27, 1948Ebonestos Ind LtdMolding of boxes from laminations of felted fibrous materials impregnated with synthetic resins
US2501527 *Mar 22, 1946Mar 21, 1950Levinsohn ErwinPress for dental flasks
US2695110 *Mar 7, 1952Nov 23, 1954Joseph FeidertMaterial compression and loading means for truck bodies
US2762296 *Jan 16, 1953Sep 11, 1956Armour & CoFiller plate for a bacon-forming press
US2824338 *Jan 7, 1954Feb 25, 1958Heinrich SchumannDevice for pressing insulating material around the long and straight-lined coil members of motors and generators
US2850966 *Dec 12, 1955Sep 9, 1958Dohm And Nelke IncPress
US2862235 *Dec 15, 1954Dec 2, 1958Warner Swasey CoMolding apparatus
US2880668 *Jul 5, 1955Apr 7, 1959Alvin L CrankeApparatus for molding meat products or the like
US2932246 *Jul 2, 1956Apr 12, 1960Charles P GalasMeat press
US3113508 *May 26, 1961Dec 10, 1963Choker Machinery CorpHam curing apparatus
US3114936 *Nov 23, 1959Dec 24, 1963Corwin D WillsonThermo-molding apparatus and a process of uniting massed hollow bodies
US3146697 *Mar 16, 1962Sep 1, 1964Dohm And Nelke IncCompression apparatus
US3285162 *Mar 2, 1965Nov 15, 1966Swift & CoBacon pressing
US3318234 *Jul 14, 1965May 9, 1967Charles George KPresses
US3326120 *May 25, 1966Jun 20, 1967Swift & CoBacon pressing
US3450037 *Dec 27, 1966Jun 17, 1969Earl AbbottPneumatic press
US4588364 *Apr 1, 1985May 13, 1986Husky Injection Molding Systems Ltd.Clamp mechanism
US5323697 *Oct 9, 1992Jun 28, 1994Schroeck PeterRadial press having two press yokes movable radially against one another
USRE33248 *Nov 14, 1988Jul 3, 1990 Clamp mechanism
Classifications
U.S. Classification100/232, 100/257, 100/271, 100/251, 425/411, 100/266, 100/283
International ClassificationA47J27/20, A22C7/00
Cooperative ClassificationA22C7/0023, A47J27/20
European ClassificationA47J27/20, A22C7/00D