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Publication numberUS2204755 A
Publication typeGrant
Publication dateJun 18, 1940
Filing dateAug 5, 1938
Priority dateAug 5, 1938
Publication numberUS 2204755 A, US 2204755A, US-A-2204755, US2204755 A, US2204755A
InventorsJohn Gonsor
Original AssigneeJohn Gonsor
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dehairing device
US 2204755 A
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Description  (OCR text may contain errors)

June 18, 1940. J, GoNsoR DEHAIRING DEVICE .Filed Aug' 5' 1958 3 Sheets-Sheet 1 NMI mh; M.


Filed Aug. 5, 19:58

5 Sheets-Shea?I 2 lllllll mmm INVENTOR. n70/rb orzso BY ATTORNEY.

June 18', 1940, J. GoNsoR 2,204,755

` DEHAI'RING DEVICE Filed Aug. 5, 1938l 5 sheets-sheet s I N VENT OR.



Patented June 18, 1940 UNITED sin entran 7 Claims.

The present invention relates to dehairing devices and has for its main object the provision of a dehairing device to be employed for dehairing hog carcasses.

A still further object of the present invention is the provision of a dehairing device which .may include a plurality of cleaning elements and a plurality of scraping elements arranged in an alternate relation, said elements being arranged in a substantially radial formation and suitably mounted within a round rotatable frame structure'to adapt them to rotate therewith for the purpose of scraping, cleaning and removing hair from a carcass.

A still further object of the present invention is the provision of a dehairing machine of the character indicated and in which the scraping and cleaning elements may remain under a uniform and constant steam pressure tending to maintain them in an extended position, with means provided whereby said cleaning and scraping elements may yield against the steam pressure when the same come in contact with the body of the carcass.

A still further object of the present invention is the provision of a suitable mechanism for utilizing steam for the objects hereinabove set forth.

With the above general objects in View and others that will appear as the invention is better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings forming a part of this application, and in which like designating characters refer to corresponding parts throughout the several views;

Fig. 1 is a side elevational View, partly in section, of the present device;

Fig. 2 isa cross-sectional View, partly in elevatio-n along and through line 2--2 of Fig. 1;

Fig. 3 is a'n elevational View on a reduced scale, taken from the opposite side of the device, the view illustrating the position of the device with relation to an animal carcass;

Fig. 4 is an edge elevational View of the device;

Fig. 5 is a diametrical cross-sectional view through the annular frame structure within which the mechanism of the device is adapted for mounting;

Fig. 6 is a cross-sectional view on an enlarged scale of a steam pipe connection with a cylindrical shaft uponvwhich the frame is mounted; and

Said steam pipe and rests upon gasket Ill vwhich rests upon a resulting shoulder at one end of said enlarged bore I3 as is clearly seen in F'ig. 6. On the opposite side of said flange I2 and between the outer periphery of steam pipe I I and inner periphery of bore I3, packingV I5 is stuffed which is maintained in its position by an annular boss Iii through which said steam pipe II extends. Said annular boss I6 has an annular projecting iiange I l through which a number of screws I8 extend, the latter engaging the adjacent end of said cylindrical shaft IIJ. Nuts I9 provided at the'outer ends of said screws I8 and bearing against said ange I'I, constitute means for maintaining said boss I6 in an adjusted position within bore I3.

The device further includes a circular lateral wall plate 28 which carries centrally projecting therefrom and integrally formed therewith a hub extension ZI through which said cylindrical shaft I0 extends and to which said cylindrical hub extension 2i is keyed by means of an oblong key 22 entering into the adjacent body portion of said cylindrical hub extension ZI and av corresponding key slot 23 made in said cylindrical shaft Ill, as is clearly seen in Figs. 1 and 5. By virtue of this arrangement cylindrical hub 2l including its circular side wall 2li will be prevented from making rotary movement in dependently of said cylindrical shaft Il?. To maintain the device from making longitudinal movement upon said cylindrical shaft In, a screw 2li may be provided at one point of said cylindrical hub extension ZI which may extend therethrough and engage said cylindrical shaft lil, as is seen in Fig. 1.

Said circular lateral wall plate 2l) is provided at itsouter portion with an integrally formed annular iiange 25, and at a meeting line between said circular lateral wall plate 2li and said annular flange 25, an annular, integrally formed and outwardly projecting manifold 26 is provided. An adjustable connecting pipe 2l is provided for connecting cylindrical shaft lll with said annular manifold 26. Integrally formed with said manifold 26 and at the outer face of said circular lateral wall plate 20 are four inwardly extending and substantially radially arranged branch pipes 28. Said circular side wall 20 is provided with outlet openings 29 with which said branch pipes 28 communicate.

The mounting plate best shown in Fig. 7, includes a vertical plate 30, from the bottom edge of which a pair of oppositely disposed wing plates 3| and 32 project. Said wing plates 3| and 32 are aixed to the inner face of circular lateral wall plate 23 by means of a plurality of' bolt screws 33 which extend through screw openings 34 made in said wing plates 3l and 32 and corresponding aligned openings in circular side plate 2U. Interposed, however, between the inner face of said circular side plate 29 and the adjacent inner` faces of wing plates 3l and 32 are gaskets 35 which have openings aligned with screw openings 34 as well as openings in alignment with outlet openings 29.

The vertical portion 35 of said mounting plate is provided with a plurality of screw openings 36 for the purpose hereinafter stated and with an integrally formed pipe 31 which communicates with a transverse vent 38 made in said vertical plate 30.

The device further includes four steam cylinders 39 one aixed to each of said vertical plates 30 and to the side thereof which is adjacent to wing plate 32. Each of said cylinders has a lateral and longitudinal extension 49 from which base plate 4I projects. Said base plate 4I is provided with a plurality of aligned screw openings corresponding to screw openings 35 by means of which each of said cylinders 39 is affixed to said vertical plate 30 by means of a corresponding plurality of screws 42. Interposed between said vertical plate 30 and cylinder plate 4| is a gasket 43 and cylinder plate 4I is provided with an oblong opening 44 made longitudinally of said base plate 4I and adjacent one of its ends, which opening 44 communicates with vent 45 made in said cylinder 39. Each of said cylinders 39 has a closed end 46 and through the other open end it receives piston 41. Vent 45 is disposed adjacent end 4E of cylinder 39.

By virtue of the construction hereto-fore explained steam fed from steam pipe l I is led to all cylinders 39 through cylindrical shaft I9, connecting pipe 31, manifold 26, branch pipes 28, outlet openings 29, pipes 31, vents 38, openings 44 and vents 45, and also through openings in gaskets 35 and 43.

The outer end of said piston 41 is provided with a bearing head 48, which in its length equals to the diameter of cylinder 39, with the resultant end lugs 49 which are set within a pair of oblong recesses 5U made longitudinally of each cylinder 39 and adjacent the open end of each cylinder 39. Thus said end lugs 49, being set within said recesses 50 constitute means for uniformly guiding each of said pistons 41 in its longitudinalshifting movement within cylinder 39. Received within each of said piston bearing heads 48 is shaft 5l, the ends of which extend beyond lugs 49 and pass through and engage heads 52 of a pair of levers 53. Said heads 52 are provided with transverse recesses 54 wherein cotter pins 55 passing through the outer ends of each shaft 5I, are adapted for positioning, as is clearly seen in Figs. l and 2.

The opposite ends of each pair of said levers 53 are likewise provided with similar recessed heads 55 which are engaged by shafts 51 which pass through the adjacent enlarged ends of rocker bars 58. Said shafts 51 are maintained in position by means of cotter pins 59 positioned within said recessed heads 56.

Said circular side wall 20 is provided at its inner face with an integrally formed annular wall' 55, which is provided at its free end with an integral and outwardly extending rim ange 6I, which diametrically is co-extensive with flange 25. Said flanges 25 and 5l are provided with opposed pairs of inwardly projecting sockets 62. Said iianges 25 and Si are in a concentric relation with respect to the longitudinal axis of cylindrical shaft I0, and all sockets 62 are at the same distance from shaft I0.

Each of said rocker bars 58 is provided adjacent its central portion with a transverse lateral extension 63 for receiving therethrough shaft 64 the ends of which being positioned Within a pair of said sockets 62. Each of said shafts 64 is keyed to each pair of said sockets 62 by means of screws 55 passing through screw openings 66 made in each socket B2. Rocker bar 58 is positioned upon shaft 54 for free pivotal movement, and each sha-ft 64 is rigidly afxed to sockets 52 by means of screws @5. Each pair of diametrically, oppositely disposed rocker bars 58 is adapted to receive a scraping device which includes a base plate 61 including its free inner end portion 68 by means of which said base plate 61 is affixed t0 the free outer end of rocker bar 58 and by means of a pair of screw bolts 69. Said base plate 61 is in an angular relation with its end portions 68 in one direction, being the direction away from the carcass when said scraping devices are in an operative position with its hide. Integrally formed with each of said base plates 61 is a pair of lateral plates 10, which are in an angular relation with base plate G1 said base plate 51 in one same direction.

Aixed by means of rivets 1I to said plates 1U is a pair of scraping plates 12, which at their free edges are provided with indentations 13 for the purpose of permitting continual ow of water as said scraping plates 12 como in contact with the hide ci the carcass, thereby preventing complete wiping of the water .from the carcass hide as said scraping plates 12 come in contact therewith. Otherwise, drying of the carcass hide would ensue which in consequence might injure the hide as said scraping plates 12 come in contact therewith. Said indentations 13 are arranged alternately in two plates 12.

Each of the other pair of diametrically disposed free ends of rocker bar 58 is adapted to receive a mounting plate 13 and a superimposed brush carrying plate 14, the two plates by their inner ends being aiixed to the outer free end of each rocker bar 58 by means of screw bolt connection 15. Both of said plates 13 and 14, and substantially at the meeting line thereof with the outermost termination of rocker bar 58, are bent in one direction which is the direction disposed away from the body of the carcass as the brush devices come in contact therewith. Said brush carrying plates 14 have brushes 16, and to maintain said brushes 16 in rigid position, said brush carrying plates 14 are affixed to said mounting plates 13 by means of screws 11.

At points adjacent which rocker bars 58 project through annular wall G5 the same is provided with enlarged openings 18, permitting an unobstructed swinging motion and shifting of said rocker bars 58 and of levers 53 as the cleaning and brushing devices make angular swinging moand which project from l Llo tion upon pivots 64 as they come in contact with the carcass hide. Made in annular wall 60 and in an alternate relation with said openings 18 are circular openings 'F9 for permitting ushing of the water as Well as falling out of the hair which may find itself within'said annular wall VBIJ. For analogous purpose a number of circular openings 89 is made in the side wall 20.

It is observed that opening 44 is made oblong so as to assure an unimpeded passage of steam therethrough from vent 38 and into vent 45 yand ,into cylinder 39 through the latter, regardless that vents 33 and 45 may not be in proper alignment due to some possible imperfection of aligning base plate 4l with plate 30 and their respective vent openings 38 and 45.

Assuming that there is a uniform supply of steam to cylinders 39 through various pipe connections and vents hereinabove described, the steam in each cylinder 39, pressing upon the adjacent end of piston 4l, will urge said piston outwardly and maintain the same in an extended position illustrated in the cross-sectional portions of Figs. 1 and 2. In that position end lugs 49 of piston bearing head 4B will remain within the outer ends of recesses 50, which in turn will maintain levers 53 in parallel relation with their respective cylinders 39. This position of levers 53 will in turn maintain rocker bars 58 in an extended position substantially co-extensive with the longitudinal axis of each cylinder 39 and in a substantially radial position with respect to circular side wall 2i), as is seen in full lines in Fig. 1.

This position of rocker bars 58 will in turn main-l tain the scraping and brush devices in an extended position shown inl full lines in Figs. 1 and 3.

When said scraping and brush devices shall come in contact with the carcass hide during process of dehairing the same, the contacting pressure exerted upon said scraping and brush devices will tend to shift the same angularly upon their pivots 64 to assume a range of angular positions which are intermediate between the position of said scraping and brush devices shown in f'ull lines and illustrated in dotted lines in Fig. 1. When said scraping and brush devices are angularly shifted upon their respective shafts 34 rocker bar 53 by its inner end will be shifted outwardly of annular wall 60 and through its respective opening 13 to assume the position shown in dotted lines in Fig. 1. This angular shifting movement of the inner end of rocker bar 58 Will in turn shift levers 53 both lengthwise and angularly with respect of their respective cylinders 39, which shifting movement of said levers 53 will in turn shift piston 41 against the steam pressure within cylinder 39. It should be noted, however, that piston 41 in its inwardly extended position within cylinder 39 at no time closes vent 45, but reaches to about one-half of its area so as to assure constant presence as well as constant supply of steam into the cylinder. W'hen contacting pressure at said scraping and brush devices is released, the same automatically tend to shift to their extended positions due to the pressure of steam Within cylinder 39 exerted upon piston 4l.

When the dehairing device herein described is brought quite close to the carcass hide, and the same rotates, scraping plates 12 in each scraping device Will both simultaneously contact the hide for exerting pulling pressure upon the hair, while said scraping device passes `past the carcass hide and remains in an angularly shifted position.

Likewise brushes 16 contact by their entire faces the carcass hide when the brush devices shift past the carcass hide and are angularly shifted as they come in contact therewith, assuming the position shown in Fig. 3, the carcass being indicated by dotted lines and marked by 1B.

To rotate the entire dehairing device bodily including circular side wall 20 and annular wall 69, and to bodily rotatably shift scraping and brush devices, together with cylindrical shaft I0,

a suitable mechanism may be used, such as belt connection from a source of power or gear connection therewith. Since it is not only desirable but necessary to bring the dehairing device close to the carcass the same, including cylindrical.

hide contacting element pivotally mounted in said frame, for permitting said element to make angular shifting movement as the same comes in contact with the hide, a cylinder mounted in said frame, a piston in said cylinder, said cylinder being adapted to receive a constant supply of uid, and connecting means between said piston and said hide contacting element, said connecting means being adapted to maintain said hide contacting element in an extended position upon its pivot, said fluid being adapted to shift said piston for the purpose of urging said connecting means for bringing said hide contacting element from its angular position into its extended position.

2. A dehairing device comprising a rotatable frame, a plurality of dehairing elements pivotally mounted in said frame and adapted to revolve with the frame as the same rotates, said dehairing elements being arranged to swing outwardly to an extended hide engaging position and to angularly shift upon their pivots to a retracted position when coming in contact with the hide, and pneumatic means for normally urging said dehairing elements to assume such extended position.

3. A dehairing machine comprising a rotatable circular frame, a plurality of hide contacting elements pivotally mounted in said frame, said elements remaining normally in extended positions upon their respective pivots, said elements being adapted to angularly shift when the same come in contact with the hide during the rotation of said frame, means for urging said elements to assume their normal extended positions from their angular positions, said means including cylinders adapted to receive a constant and uniform supply of iluid, pistons within said cylinders, and pivotal connecting means between said pistons and said elements.

4. A dehairing machine comprising a shaft, a circular wall mounted upon said shaft, an annular wall integrally formed with said circular wall, in an angular relation with said circular Wall and in a concentric relation with said shaft, parallel and integrally formed anges extending from said circular wall and said annular wall, a plurality of hide contacting elements pivotally mounted within said flanges, means for mainesr ytaining said hide contacting elements in an eX- tended and substantially radial position with respect to said circular wall, said hide contacting elements being adapted to angularly shift as they come in contact with the hide, and pneumatic means for bringing said hide contacting elements into their normal extended position when said elements come out of contact with the hide.

5. In a dehairing machine, a rotatable shaft, a frame rigidly secured thereon, hide contacting elements pivoted to the frame, cylinders carried by the frame, pistons reciprocable in said cylinders, leach of said pistons being connected with one of said hide contacting elements, and means to place said cylinders in constant communication with a source of supply of fluid under pressure.

6. In a dehairing machine, a rotary carrier, a plurality of retractable arms, hide contacting elements carried by said arms, said arms being pivotally mounted on the carrier, and uid pressure operated means for swinging said arms to normal projected hide engaging position.

7. In a dehairing machine, a hollow rotatable shaft, means to place said hollow shaft in communication with a source of supply of fluid under pressure, a frame rigidly secured on said shaft, hide contacting elements pivoted to the frame, iluid pressure operated means for swinging said hide contacting elements to normal projected hide engaging position, and means to place said fluid pressure operated means in constant communication with said hollow shaft.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2637067 *Jul 11, 1949May 5, 1953Johnson Co GordonPoultry plucking machine
US4376325 *Oct 18, 1979Mar 15, 1983Slagteriernes ForskningsinstitutSurface cleaning device for carcasses
US6594845Apr 5, 2001Jul 22, 2003Makino, Inc.Brushing tool and method of using the same
WO1980000779A1 *Oct 18, 1979May 1, 1980Boas PSurface cleaning device for carcasses
U.S. Classification452/97, 15/104.14
International ClassificationA22B5/00, A22B5/08
Cooperative ClassificationA22B5/08
European ClassificationA22B5/08