US 1178326 A
Description (OCR text may contain errors)
E. H. LICHTENBERG.
DISTRIBUTING CHUTE. APPLICATION FILED APR.20. I915.
Patented Apr. 4, 1916.
4 SHEETS-SHEET l.
wwul oz E. H. UCHTENBERG v msmsmme CHUTEK m r 1 APPLICATION FILED APR. 201 915). 1i 3 Patented Apr. 4-, 1916.
4 SHEETS-*SHEEY 2.
E, H. LICI-ITENBERG DISTRIBUTING CHUTE.
APPLICATION FILED APR. 20', I9If Patentd Apr. 4,1916.
4 SHEETS-SHEET 3 7 v P L E; H, LICHTENBERG, DISTRIBUTING CHUTE. APPLICATION FILED APILZO, 1915.
if i090 w/kmmo v 7 Patented Apr. 4319i 6.
ERICI-IH. LICHTENBERG, OF MILWAUKEE, WISCONSIN, ASSIGNOR T KOEHRING MACHINE COMPANY, OF MILWAUKEE, WISCONSIN. 1
To all whom it may concern Be it known that I, Enron HQLICHTEN BERG, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee andState of Wisconsin, have invented certainnew and useful Improvementsin Distributing-Clmtes, of which the following is a specification. 1
This invention has to do with what ar now commonly known in the art as paving mixers. Paving mixers are particularly designed for facilitating the operation of laying pavements or paving materials on streets, sidewalks, alleys or the like, the machine comprising primarily a mixing machine supplied with means to distribute the mixed materials to the point of u se 'or deposit.
The invention relates particularly to the type of paving mixer wherein a distributing chute is mounted on the mixing machine and adjustable in length to vary the discharge point of the chute. It has been proposed heretofore to use distributing chutes of this kind where the chute is made in sections mounted on a rigid frame and different means resorted to to render certain sections inoperative whereby different sections may at will be employed to control and vary the point of discharge of the material. \Vhere chutes are constructed with rigid supporting 'frames for the sections, however, 'it is impossible touse the distributing means to advantage in laying pavements in alleys or narrow places in a manner to cover the entire area to be paved.-
One of the objects ofthis invention, therefore, is to construct a chute of the sectional type dispensing with the use of a rigid supw porting frame for the sections thereby permitting the chute to be swung in a horizontal plane to limits of movement substan-- tially: at right angles tothe machine, even in operations of laying pavementsm the narrowest places where such work 1s ordinarily', necessary.
Still another object of the invention consists inthe peculiar controlling means for the distributing chute which embodiesmanualiycontro'llable devices for utilizing the driving power of the mixing machine for biitli-swirigiiig the chute horizontally as well as for operating the sections in such a manner to vary the operative length of the Specification of Letters Patent.
. Patented Apr. 4, 1916.
chute and consequently its discharge point. In the carrying outof this portion of the invention there are provided driving connections intermediate the chute and a rotary mixing drum forming a part of the mixing machine in which the invention is' preferably though not necessarily used.
Still another important feature of the invention resides in the provision ofdifiercause the outer endsof the various sections of the chute to assume a position in which the discharge point afforded by said outer ends is maintained at a substantially constant distance from the ground or level on which the mixed materials are to be deposited. The latter result is essentially desirable to eliminate likelihood of separation of the mixed materials into a non-homogeneous mass incidental to the falling of the materials to the paving level from excessive heights. discharge chute whereby to control the discharge point of the chute as an incident tov the adjustment of any particular section to the discharge point, also forms an essential feature of'the invention.
So far as I am advised the various controlling instrumentalities just above referred to, as Well as the peculiar construction of my chute per se are broadly novel and I therefore do not" wish to be limited tothe specific instrumentalities employed as hereinafter described either with reference to the particular combination of thesame or de- The automatic movement of the s mechanism illustrated by Fig. 1 and bringmg out more clearly the manual controlling devices. Fig. 3 is a considerably enlarged view of the devices directly associated with the chute as shown in Fig. 2. Fig. at is a view illustrating more fully the arrangement of the mechanism of Fig'. 3, looking down upon the parts. Fig. 5 is a view similar to Fig. 2, on'enlarged scale and showing a modified adaptation ofthe invention.
Referring particularly to Figs. 1 to 1 inclusive A denotes the rotative mixing drum of any conventional type of rotary mixing machine, this drum being driven ordinarily by an engine or suitable motor mounted upon the truck B of the, machine, said truck being supplied with the usual ground wheels C, and the machine being ordinarily adapted to move from place to place through its own power. Leading from the discharge end of the mixing drum A is a suitable dis charge chute D and the materials passing through the chute D are adapted to gravitate into the distributing chute 1. The chute 1 is composed of a main or innermost section and a plurality of sections 2, 3, 4 and 5. The section 2 is pivotally connected with the section 1 and suitable pivotal connections are provided intermediate the sections 2, 3, at and 5, all of said connections being designated (5. The number of the sections of the chute 1 may be varied as re quired according to the particular purposes of the machine. The chute 1 is supported pivotally at '7 upon a rotatable member 8, the latter in turn being supported upon a bracket 9 of any suitable form ofl'standing from and supported by the discharge end of the truck B. The pivot 7 permits of raising and lowering the chute 1 in respect to vertical planes while the rotatable member 8 permits, by its rotation, the swinging of the chute 1 in planes transverse to its vertical movement so that the chute may extend rearwardly or laterally, 0' any combination of such directions, in respect to the mixing machine. all for the purpose of covering the area of distribution. The rotatable member 8 is formed with a worm section 10 and a worm 11 engages said worm section 10 and is supported by a drive shaft 12. It is obvious that by turning the worm 11 movement of the chute 1 may be obtained in horizontal or substantially horizontal planes. The means tooperate the worm 11 includes a friction wheel 13 supported on one end of a short shaft lel which is mounted on a bracket 15 supported to,
swing on the shaft 12 as an axis. On the other end of the shaft 14 is mounted a. gear 16 meshing with a gear 17 fixed to the shaft 12 on which is also keyed or otherwise secured said worm 11. Connected with the bracket 15 is a link 18 attached to a hand operated lever 19. The friction Wheel 13 is so situated that by movement in one direction itgwill be caused to engage with a.
trash or surrounding the mining drum h,
said track being provided for operative en- 4 gagement with anti-friction rollers 20 and 20 which actually support the drum for free revolution. By movement in the other direction said wheel 13 may be caused to engage with the roller 20 and these movements of the wheel 13 are adapted to be effected by shifting the lever 19, the parts a and 20 constituting driving means for driving the wheel 13 in either of opposite directions. Driving of the wheel 13 correspondinglydrives the shaft 14, the gears 16 and 17, shaft 12, worm 11 and worm section 10 in the predetermined direction of operation.
It is to be noted at this point that the sections 2, 3, 1 and 5 of the chute 1 are provided at their inner pivoted ends with stop plates 21, each stop plate having a flange adapted to abut with a ridge or flange 22 on the side of the adjacent inner chute section. Preferably the parts 21 and 22 are located at opposite sides of the several sections and the purpose of these parts is to provide abutting means whereby as any of y the outer sections 2, 3, 4:, a are raised the upward inward movement of said sections will be limited when each reaches a position at substantially a right angle to its next inner section, the preliminary movement being independent of said next inner section. When an outer section of the chute which passes over a sheave 2d on the upper portion of the mixer frame and thence down-- wardly over a sheave 25 to a winding drum 27 which drum is preferably cast with the gear 28 at the inner side of the latter. The
gearQS is loosely mounted on the shaft 12 previously referred to and is operable by a worm 29 on an inclined shaft 30 which is suitably mounted in the bracket 9. Shaft 30 carries a bevel gear 31 meshing with a corresponding gear 32 on the drive shaft 12. The drive shaft 12 is similar to th shaft 12 and is susceptible of being ope ated by driving meclianisn'rsubstzintially the duplicate of the mechanism previously described by which shaft. 12 is actuated. The duplicate driving mechanism, for purposes of brevity, may be said to comprise the parts 13' coperative with thetrack (L and roller 20, the shaft 14:, tpe bracket 15, the gears 16 and 17, and the actuating link 18 with operating lever. 19- situated adjacent to the and owing to its engagement with the worm ig ea r 28 the drum 27 -.will be operated in either direction desired to cause winding or funwinding of the cable 23 and raising or I loweringrespectively of-the sections of the ohut. The manner in which the chute sec- -tions may be adjusted by the above operation r-soithat any one. of the sections may be used for the dischargesection, so to speak, IS
. In addition to the operation of the drum i27'through the mechanism just described it is;c,ontemplated that the gear 28 shall also be formed on the side opposite the drum 27 with a drum 33, the latter being of smaller diamet r than the drum 27. Adapted to wind about the drum 33 in a direction oppofsite that in which the cable 23 winds about the drum 27, is a second cable 34 extending J upward from the drum 33 over a sheave 26,
a Second sheave and a third sheave 24" mounted co-axially with the sheave 24 and from thence downwardly around a pulley 35 connected by a bail 36 with the outer end of the main chute section 1. a After passing around the "pulley 35 the cable 34 extends upward and has its end secured to a hanger 37 attached to the upper portion of the mixer frame. By the provision of the pul ley 35 and a drum 33 of proper size, differential controlling movements are adapted to be imparted to the chute 1 and its sections for the purpose in respect to the cable 34 tions.
.of maintaining the discharge point of the chute at a constant distance from the i .ground, and in respect to the cable 23 for the 40' purpose of elevating the sections 2, 3, 4, 5 to vary the discharge point of the chute through proper adjustment of the said sec- Having in view the foregoing it will be evident that as the sections 2, 3, 4, 5 are ele- 'vated under the control of the operator to render any one of these sections, or the 1, main section, the operative discharge member of the chute 1, it is necessary owmg to the shortening of the operative length of the 'gchute that the inner section or sections to be used for discharge purposes be lowered; otherw ise the discharge point of the chute would be raised too great a distance from the ground. Furthermore the practical lengthening of the chute by lowering of the .sections by means of the cable 23 necessitates the bodily raising of the chute or exactly the reverse action to that justdescribed. All of the foregoing operation is performed antomatically, and simultaneously, preferably, in the operation of the chute under the control of-the lever 19.
k In Fig. 5 of the drawingsis illustrated a on of the invention in which the the operative length of the chute and mainj tain the discharge point constant ismanually operable. The latter means comprises the shaft 38 rotatable by a hand wheel'39 and having a worm 29 atits lower end cooperative with the gear 28 which is substan tially the same in construction and operation as the gear 28 previously described. Obviously the gear 28 may be turned by themanual means 38, 39 and 29 for the same purposes as the power means previously described is used.
, Having thus described the invention, what is claimed is 1. In a machine of the class described, the combination of a discharge chute comprising a plurality of sections operable to vary the operative length of the chute and correspondingly vary the discharging point of the chute, means for raising the chute sections to vary said dischargepoint, and means 00- operating with the chute to maintain the discharge pomt thereof at a constant distance from the ground irrespective of the elevating point, and means operable as an incident to the operation of the last mentioned means controlling bodily movement of the chute whereby to maintain the discharge point of the chute at a substantially uniform distance from the ground.
3. In a machine of the class deseribed, the combination of a discharge chute comprising a plurality of sections operable to vary the operative length of the chute and correspondingly vary the discharging point of the chute, means for raising the chute sec tions to vary said discharge point, means cooperating with the chute to maintain the discharge point thereof at a constant distance from the ground irrespective of the elevating movement imparted to the sections, and means for swinging the chute laterally in re spect to a vertical plane. 4
4. In a machine of the class described, the combination with a distributing chute comprising a plurality of sections arranged for upfolding and downward movement whereby a selected section may be thrown into a position to constitute a discharge member, of means to swing the chute laterally, means connected'with the outermost section of the chute for adjusting its'sections to and from the discharge point, means for effecting bodily movement of the chute for controlling the distance of the discharge point of the operation of the last mentioned means as an incident to the movement of the sections of the chute.
5. In a machine of the class described, the combination of a rotatable receptacle, a. distributing chute adapted to receive materials from the receptacle, means operable from said receptacle for swinging the chute laterally, and means operable from the receptacle for raising and lowering the chute.
6.111 a machine of the class described, the
, combination of a rotatable receptacle, a supporting roller for said receptacle operable thereby, a chute adapted to com'ey materials in the receptacle, means operable from said roller for swinging the chute laterally. a second roller adjacent to the receptacle and operating in conjunction with the latter, means cooperating with the second roller for raising and lowering the chute, and manual controlling devices for the last mentioned means and For the means for swinging the chute laterally.
T. In a machine of the class described, the combination of a rotatable receptacle, rollers supporting the same, means for driving the receptacle and thereby operating the same and the rollers in reverse directions, a distributing chute comprising a plurality of sections, and driving connections intermediate said rollers and the chute forswinging the chute laterally, to]: raising the chute bodily, and for causing movement of the sec tions of the chute separate from the bodily movement.
8. In a machine of the class described, the.
raising the chute bodily, and for causing movement of the sections of the chute separate from the bodily movement, said con nections including a rotatable support for the chute, and manually controlled gearing intermediate the drum and rolleraforesaid, for shifting said rotatable support, together with rotatable winding drums, gearing intermediate said winding drums and a roller aforesaid for driving the drums, a cable adapted to be \YOllIlCl about one of the Winding drums and connected with the outermost section of the chute, a second cable connected with the other-Winding drum and having independent connection with the chute.
9. In a machine of the class described, the combination of a receptacle, means for driving the receptacle, a distributing chute comprising a plurality of sections, and driving connections intermediate said receptacle and the chute for swinging the chute laterally, for raising the chute bodily,
and for causing movement of the sections of the chute separate from the bodily movement, said connectionsincluding a rotatable support for the chute and manually con trolled gearing intermediate the drum and a roller, for shifting said rotatable support, together with rotatable Winding drums, gearing intermediate said winding drums and the receptacle for drivingthe drums, a cable adapter to be Wound about one of the winding drums and connected with'the outermost section of the chute, a second cable connected with the other Winding drum and having independent connection with the chute, and means to compel simultaneous movement of the Winding drums, and means to cause reverse operation of the cables and differential movement of thesame.
In testimony whereof I aflix my signature.
ERICH H. LICHTENBElR-G.