US2339360A - Load gathering, pressing, and expelling device - Google Patents

Description

|. SICARD 2,339,360

LOAD GATHERING, PRESSING, AND EXPELLING DEVICE Jan. 18, 1944.

Filed March 24, 1943' 14 Sheets-Sheet 1 Inventor I ZCdid Attorney fiezze'e (I I. SICARD Jan. 18, 1944.

LOAD GATHERING, PRESSING, AND EXPELLING DEVICE Filed March 24, 1943 14 Sheets-Sheet 2 I Inventor flee d 2407 4 By 6 Z y Attor ys Jan.T8, 1944. l. SICARD 2,339,360

LOAD GATHERING, PRESSING, AND EXPELLING DEVICE Filed March 24, 1943 14 Sheets-Sheet 3 Inventor 1R 8 fieize dz'cai' Q By Attorneys I. SICARD Jan. 18, 1944.

LOAD GATHERING, PRESSING, AND E'.rELLING DEVICE 14 Sheets-Sheet 4 A Md m h J 6 NM 1$: QW wk I m wmw \mv wwfi w Q M I .w a

Jan. 18, L s C LOAD GATHERING, PRESSING, AND EXPELLING DEVICE Filed March 24, 1943 l4 Sheets-Sheet 5 Inventor fieize'e (Sz'car l. SICARD 2,339,350

L OAD GATHERING, PRESSING, AND EXPELLING DEVICE Flled March 24 1943 14 Sheets-Sheet 6 I Jan. 18, 1944.

' Inventor Attorneys Jan. 18, 1944. I. slcARb 2,339,360

LOAD GATHERING, PRESSING, AND EXPELLING DEVICE Filed March 24, 1943 14 Sheets-Sheet 7 F7 1 1 4 ,jZ 87 7 55 0 45,11 3y igi I 78 a '9 ...m 52 iii 71 1 'HJ a, 6 528 69 Inventor li erze dz'card By Attorney5 Jan- 18, SICARD LOAD GATHERING, PRESSING, AND EXPELLING DEVICE Filed March 24, 1943 14 Sheets-Sheet 8 L llll 'Tr lllll'j Inventor 110 fierzee Z CdFd Ii 95 y 103 Lg:\ rymtornew Jai l8, 1944. l. SICARD I 2,339,360

LOAD GATHERING. PRESSING. AND EXPELLING DEVICE Inventor Ji'e/ze 61202 By 6 g I Attorneys I. SICARD Jan. 18, 1944.

LOAD GATHERING, PRESSING. AND EXPELLING DEVICE Filed March 24, 1945 14 Sheets-Sheet 10 H lllmllllwmum ll Q5 HIHHI Inventor did Attorneys Jan. 18, 1944. SICARD 2,339,360

LOAD GATHERING, PRESSING, AND EXPELLING DEVICE I 1Z6 "36 Jlllllllulllllllllllllll"ll" m- Attorneys ,Jan. 18, 1944. SICARD 2,339,360

LOAD GATHERING, PRESSING, AND EXFELLING DEVICE Filed March 24, 1943 l4 Sheets-Sheet l2 'IIIIIIIIA lfiventor By Attorneys SICARD 2,339,360

LOAD GATHERING, PRESSING, AND EXPELLING DEVICE Jan. 18, 1944.

Filed March 24, 1943 l4 Sheets-Sheet 13 ll llllllll' IIIII IIII Inventor Jzgard Y rze By I Attorney;

l. SICARD Jan. 18, 1944.

LOAD GATHERING, PRESSING, AND EXPELLING DEVICE Filed March 24, 1943 14 Sheets-Sheet l4 Inventor Ji /Zea uzc a'i'zZ Attorney;

Patented Jen. s, 1944 wanoarnsnmo, PBESSING,-AND

EXPELLIN G DEVICE Ircne Sicard, Montreal, Quebec, Canada Application March 24, 1943, Serial No. 480,282

14 Claims.

The present invention relates to a loading, load-pressing and unloading mechanism and, more particularly, to such amechanism applicable to vehicles and carriers in general.

of course, loading and unloading devices are known, and commercially used, for a variety of purposes. Generally speaking, the known devices comprise either a movable wall for expelling the load, tilting means for removing said load when in covered enclosures or, in certain cases, tilting means and elevating means for dumping in the enclosures portions of the load disposed in said elevating means.

But, in none of the devices briefly reviewed above, is it possible to load such material as refuse, garbage and other resilient matter, tightly compress said load evenly in a completely enclosed structure and,"thereaiter, remove quickly and completely the loaded material, without tilting the device, at the same end from which the load entered the structure.

Consequently, the primary object of the inven. tion resides in the provision of means for load-,

ing an enclosed structure, compressing the load therein, and, finally, expelling the compressed load.

A further important object of the invention contemplates the provision of means of the character described applicable easily and in a simple manner to vehicles and carriers such as motor vehicles, railway cars, barges, etc.

Still another object is the provision of a device of the character described which is rugged, eflicient, unaffected by the material constituting the load, ofsimple operation and relatively low cost.

A still iurther object of the invention envisages the provision of a device having means whereby an enclosure may be partially, or fully loaded, said lead tightly compressed when of a springy or compressible nature and kept in that state during transportation, for instance, and thereafter adapted to be expelled bodily and forcibly from said enclosure.

Other objects and advantages of the invention shall become apparent, or be specifically pointed out, in the course of the description to follow.

As a non-limitative example, an application of the device to a garbage-collecting truck is shown in the annexed drawings, wherein:

Figure l is a side elevational view of a garbage collector mounted on a truck chassis shown in dotted lines,

Figure 2 is a rear end elevational view of said collector in load-enclosing position,

Figure 3 is a vertical sectional view of the collector also 'in load-enclosing position, showing the operating mechanism,

Figure 4 is a view similar to that oi Figure 3, showing the collector in load-expelling position,

Figure 5 is an enlarged detail view of the mechanism for engaging the loading and exs i means.

,Figure 6 is, an horizontal section through the base of the load expelling means,

Figure 7 is a section taken on line 1-1 of Figure 3,v

Figures 8-8:; represent, in'a detailed longitudinal elevation; the controlling mechanism for the loading and'expelling means,

Figures 9-9a represent the same mechanism in a detail plan view,

Figure 10 is a perspective view of the end scoop constituting the loading means,

Figure 11 is a part-sectional and vertical view through the side oi the collector, showing the scoop and the relation 01 its operating mechanism with the side of the collector body,

Figure 12 is an enlarged detail of the operat ing mechanism shown in the preceding figure,

Figure 13 is an enlarged detail view of the outer ends of scoop-guiding channels in the body sides of the collector,

Figure 14 is a perspective skeleton view of the manual mechanism for selectively rendering operative either loading and expelling means,

Figure 15 is a schematic representation of the controlling mechanism in inoperative position,

Figure 16 is a similar figure showing the expelling means in operative position,

Figure 17 is another similar view with the loading means operative,

Figure 18 is a diagrammatic view showing the driving hydraulic means and the hydraulic circuit thereof,

Figure 19 is an inside sectional view of the hydraulic driving cylinder,

Figure 20 is a detail view of the loading means engaging members in position disengaged from the hydraulic means driving cable,

Figure 21 is a similar view with the members in engaged position,

or the Figure 25 is a plan' view showing the mecha nism of Figure 24 in position on the body of the collector, .1

Figure 26 is an elevational and sectional view through the loading scoop in its initial'loading position,

Figure 27 is a similar view of the scoop in its outermost position of loading, a

Figure 28 is still another view of the scoop in position for inward loading movement,

Figure 29 is a further view of the scoop in well advanced inward position, I

Figure 30 is a partial elevation of the expelling means, constituted by a wall having springpressed sealing strips,

Figure 31 is a section taken on line 3l-4l of Figure 30, showing the position of the sealing strip,

Figure 32 is a detail of the spring-pressed strip taken on line 32-42 of Figure 30, and

Figure 33 isa section taken on line 33-43 of Figure 19.

Before proceeding with the detailed description of the device, it is believed thata summary of operation and construction will be a great help to the better understanding of the descriptive.

text to follow.

Briefly stated, therefore, the. collector of the invention is in the form of an elongated body,

shaped like a quadrangular tunnel and' having reinforced sides and bottom. The outer rear end of said tunnel is open, while the front end may be closed.

A substantially vertical wall-is movable longitudinally in the tunnel, said. wall being normally aasasoo Figure 22 is-a view corresponding to Figure 20 show'nin Figure 14. said cams act onthe pivoted spring-pressed pawls shown in Figures 20, 21, 22,

23, to retract the some out of engagement with the block secured 'onth e driving cable, Thus, one carriage at a time may be connected to the driving cable and-actuated thereby.

Finally; the. cable driving means are preferably in the: form of an hydraulic power device constituted by .a cylinder wherein a piston is movable, back and forth, by oil pressure generated in an oil pump driven by a truck engine, or.any other source of power, as-shown in Figure 18.

Detaile -c3 p1a1'iation of the construction and will now be given with reference to the drawings, wherein similar'reference characters represent corresponding parts throughout.

In said drawingathe body of the collector is designated by the reference character B which, as shown in Figure 1, is mounted on the chassis C of the truck shown in dotted lines and indicated at T. Said body is in the form of a quadrangular tunnel-preferably constructed of steel and formed of verticalplates 35 forming side walls having a horizontal longitudinal channel 38 to provide internal guide'tracks, the side wall plates 25 bein reenforced by. means-oi a plurality of vertical-crosssections 31. Thebody is completed by the addition of a roof plate 38, reenforced by transverse triangular strips 39, and a floor which consists of aninner continuous plate 40 supported 'by theheavy base plate 4| which is in turnsuitably secured to the chassis of the truckby meansoftransverse I-beams I2.

35 All said details are clearly. in

3,4and7.

at the outermost front end of the tunnel and adapted to move backwardly to expel the material loaded in the tunnel:- it is, therefore, broadly called the expelling means. I

The material is loaded into the tunnel'by means of a scoop pivoted to carriages movable, longitudinally of the trmnel, in tracksserving also for the vertical expelling wall. Said scoop is shaped like a sector, the are being constituted by a circularouter plate adapted to close the-outer rear end of the tunnel (see Figures 1, 2, 3).

The scoop is adapted to move within the tunnel to force the material loaded against the vertical wall, thereby compressing the load to occupy the smallest possible space. Said scoop is further adapted to assume a plurality of positions, shown in Figures 26, 27, 28, 29, to facilitate the loading of the material; said positions being made possible by the pivoted construction and channels in the sides of the body shown clearly in the above figures.

The back and fro movement of the wall and scoop is assured by means of side blocks engageable with block-clutching means disposed on the carriages of said wall and scoops. The blocks are secured to travelling cables forming part of a driving system shown in Figures 24, 25, the fea-' on longitudinal angle irons, and slidable longitudinally by the manually operated mechanism As previously explained, the loading and expelling means of the collector -jareattached to carriages movable along tracks especially prcvided for, the purpose. v.Said tracks are provided within a box-like enclosure disposed at thelower outside edgeof the body, longitudinally thereof. This isshown more, particularly in Figures '11,

. 12, 13, in cross' -'section outwardly in Figure 1 wherein .the"hing'ed covers 43 are clearly shown; As illustrated clearly in Figure 12, the

' lower portion of the side plates 25 is bent angularly and outwardly to forms. flange 44 to which the doors .43, already described, are hin ed.

The continuityjo'f the wall "is extended downwardly, near the floor'plate 40, by means of an angle plate 545 attached to the flange 44 and acting [also to reenforce the lower portion of the 'body'propen Also shown in Figure 12, the floor-plate I0 is provided on the side marginal edges=thereof with an upwardly directed angle plate It, the upstanding portion of which is parallel to and spaced from the vertical portion of the angle plate 45.

The track proper comprises a longitudinal T-beam 48, received in suitable cavities of the beams 42, whereby theupper plane surface of said T-beam is above the top of beams 42; this arrangement is visible in Figure 12, and in Figures 5 and 6. Said track, with the-spaced arrangement of vertical, parallel, angle plates 45- is used to receive the carriages of the loadin and load-expelling means, said carriages consisting of bent steel plates similar in cross-section but differing sll ht yin their vertical dimensionsr The carriage for theloading means, or scoop, is illustrated in perspective in Figure 10 and in cross-section in Figure 12, this showing applying also to the carriage of the load-expelling means,

of a vertical carriage body panel ill to which the carriage-entraining means are secured. -Said panel BI is parallel with, and spaced from, an

other vertical plate 02 joined therewith at the top -by a narrow horizontal strip 50, the plate 52 being bent angularly to form a horizontal web 54 which, as shown in Figure'l2, is intended to rest on the horizontal section of angle plate 46.

Finally, an upstanding extension 55 is formed on web 54, which extension is pyramidal in shape and provided with a semi-circular enlargement 56 near the apex of the extension. In

order to reenforce said extension, and also for a purpose to be described later, a marginal flange 51 is formed atthe edges of extension an body; it is, furthermore, triangularly shaped as shown in Figures 3 and 4.

" Both carriages A and M are adapted to slide longitudinally of the body, partly on the track and partly between the s aced vertical extension ofangle bars. and. Thus, the portions 5I52 of .the carriages straddle the plate 48, while-the vertical plate 52 is disposed between angles 45 and 46. Consequently, the verticalextensions 55 and of carriages A and M extend insidethe body, whereas thecarriagepanels' .are' outsidesaid body and adapted to be driven by a mechanism-to-be-deicribed. This arrange ment has the advantage of firmly guiding the carriages, supporting the same against distortion and forming a seal to prevent the material in thecollector fromescaping and hindering the operation of the-carriages; The body-is outwardly-completedby. the addition of a longitudinal apron 41 secured to the beam 42 and extending downwardly to hide from view the chassis of the truck and associated mechanism.

The carriages are driven, back and forth. along the tracks by means of a travelling cable 65 to which a block 08 is secured, as shown clearly in Figures 20, 21, 2 2 and 23. Said blocks, one on each side of the collector body. are adapted to be engaged by dogs pivotedto the carriages and selectively actuated to control the movement of said carriages. The carriages A, on the panel ii, are provided with a horizontal, angularly projecting bracket 61 (Fig. 10). parallel with the shoe 50 and to which bracket and shoe a pair of dogs 68 are pivoted by means of pins I0, Each .dog, furthermore, is formed with an upstanding extension 'II to the top of which a free roller 12 is secured.

As shown to advantage in Figure 20, the panel SI of the carriages is provided with openings. I3 through which the inner set face of the dog is adapted to project; leaf springs I3 being provided for that purpose, which urge the lower 'set H of the dogs against the carriage panels.

Thus, the higher projection I5; tapering down to the pivoted end extends out from the inner My the'carriage body into the path of the moving block 00 (Fig. 21).

The dogs are retracted, at wiiL by a cam I0 engaging the rollers I2, said cam being mounted on a longitudinal angle iron I8 supported at one.

end by a rod I9 which, in turn, is'slidably dis-- posed within a bushing 00 stationary with respect to said rod. The other end of-said angle iron is, supported by a bracket 8| welded to the apron 41mg. 12). Longitudinal movement 01' the cam.

to selectively retract the dogs 68, is eflectuated simply by means of the linkage shown in Figure 14, and which consists of a pair'of arms 82 secured to a transverse rod-83, one'of th -arms 82 being connected by a link 84 to actuating lever 85 extending through the apron at the rear of the selector body. The arms are, in turn, linked to the rod I8 by means of pivoted connections 86; thus, according to the position of. the lever 85, shown in Fig. 14 in dotted lines, the dogs 68'can' 2g retracted or left to engage the travelling block A similar arrangement exists forfthe carriage M which, however, carries only one dog 90 intended solely to pull the vertical'wall rearwardly when engaged by the block 66. Said dog 90 is retractable by means of thecam 'II- engaging a roller SI of the dog corresponding to roller 12 on the dogof carriage A. Said cam 11 is so disposed with respect to cam It that the dog 150 is released only when the dogs68 are retractedithis, arrangement'will readily be understood when it is considered that only one carriage can be engaged,

at one time, with'the travelling block (see Figure 16). i

The driving mechanism for th carriages, embodying the block 06 already described, consists, first of all,- of'a cylinder 85 (Figures 18, 19, 24) suitably secured to the frame of the collector or truck. Said cylinder is provided with end ports 96, 91 for the admission and exhaust of a driving .fluid, preferably oil. A piston 9.8 is movable within said cylinder, said piston having a piston-rod 89 projecting outside the cylinder.

The ports '969I are connected, by means of ducts IOI--I02, to a three-way 'valve I03, said valve being connected to suction and pressure ducts I04-I05- from the hydraulic pump I 06 driven directly from the truck transmission I01.

According to the position of the lever I08, controlling the action of the valve I03, the ducts IOII02 can be connected to the ducts I04I05, this arrangement reversed, or the ducts I04I05 connected together whereby, in the last case, the pump runs idle. Consequently, the oil pressure can be applied, at will, on either side of the piston and the same moved correspondingly.

faces of the piston 98, it operates to contact the wall of the cylinder ahead of the piston, whereby the closed valve I00 is lifted from its seat, against 1 the fluid pressure tending to close it. Thus, at

each end of the piston stroke, the valve I 00 is operated'to open a communication through the piston'body, to allow the fluid under pressure to of the bushing, from the other, 'to equalize The piston rod T99 is provided with an outer cross-shaft III having at each end a pair of pulleys II2 loosely mounted on said cross-shaft (Fig. 24) Other pulleys II3-II4II5-'-II6 are mounted, horizontally, on the frame or chassis of the truckto receive a cable I ll, one end of which is secured. at II8, to the frame and trained upwardly over the inner pulley of the pair, H2. Said cable is thereafter passed over pulleys .II3-II4'II5-II6, in their order, and finally trained downwardly over the outer pulley H2 to the eye-bolt II9 where it is secured. Thus, both ends of the cable are firmly attached to the frame and trained, in opposite directions, over adjoining pulleys to form a loop passed around the pulleys II3 to H6; the reach '65 of said loop carries the block 66 already described and which, due to the doubled arrangement of the cable, travels twice the distance covered by the piston actuating said cable. Since the mechanism of the present invention is always in duplicate, one for each side. the description Just given for one side of the driving system applies also to the other side and the same numerals may be used.

The means for supporting and driving the movable wall and scoop having been described, the description of the construction and operation of said members may now be made.

The scoop is illustrated in perspective in Figure 10 and is generally designated by the reference character 8. Said scoop consists, essentially, of parallel .side panels I25 substantially sectorshaped, the arcuate portion of which is closed by a curved plate I26 the marginal flange I21 of which overlies, and is welded to, the outer edge of the panels I25. It must be noted that the upper portion I28 of the scoop plate is hinged at I29 to form a cover, the flange I30 of which overlies also the outer edge of the panels but is not welded, thereto. The triangular. structure described is pivoted to the centre of the upstanding extension 65 by means of a pivot pin or rivet I3I around which the scoop is adapted to oscillate; as shown to advantage in Figure 10, the

edges of the panels I26 are provided with a flange I32 the edges of which are sharpened so as to scrape againstthe side panels or body of the collector to prevent the passage of material between said scoop and said body. The scoop is completed by the addition of a small roller I33 freely secured to the side panels I25 and the flange I21 and slightly below the center of the curved plate I26. The purpose of said roller will be explained later.

The free end of the pivoted cover I28 is upturned to form a flange I35, to which an angleiron I36, having rollers I31, is secured; said angle iron is so disposed that its horizontal portion I38 is spaced from, and parallel to, the cover I28 to form a hook-like depression adapted to prevent the upper part of the scoop from coming out of the collector body. I

The movable wall, generally represented in Figures 3, 4, 5, 30 and 31 by the reference letter W, consists, as previously described, of the carriage extension plates 66, one on each side, between which'a partition I49 extends. Said partition consists of a lowerslanting section I and an upper curved section I42; the purpose of this arrangement is to force loaded material upwardly, against the body ceiling, to provide for more complete loading of the collector. The partition I49 is braced against'buckling by the reinforcing angle bars I49 which carry rollers I44 at the bot tom end thereof to facilitate longitudinal movement. Said partition, furthermore, is provided with a bottom scraper strip I45.'hingedly secured to the lower edge of the partition and adapted to maintain, at all times, a sliding contact with the floor plate 40.

As shown to advantage in Figure 31, the exten-v sions 60 are beveled on the sides and turned .outwardly at I46 to contact snugly the side vertical walls of -the collector body. In order that said extensions be pressed against the body walls even when said walls are slightly bulged, a spring arrangement is used which is illustrated in Figure 32. To the partition I a number of brackets I" are welded in a line approximately halfway between the angle I43 and the vertical edgeof the said partition; similar brackets I48 are secured in corresponding positions onan angle bar I49 welded to the extensions 60 in line with the partition I40.

The partition is supported in place against the angle bar I49 by means of bolts I50 passed through holes provided in the edge of the partition and slots I52 formed in the flange I5I and the brackets I48 welded thereto; thus, the partition is capable of a slight lateral movement, limited by the extent of the slots. Compression springs I53 are disposed between the brackets I4I-I48 and are held in place by the loose bolts I54; consequently, the tension of the springs is transmitted from brackets I41 directly to the extensions 69 through the intermediary of brackets I48 and flange IN. The result is a perfect scraping contact between movable wall and collector body, whereby all material therein can be speed ily and completely expelled.

Reference to the drawings will show that'movable wall W is capable of longitudinal movement only, while scoop S executes a plurality of arcuate movements, besides the longitudinal movement. Those multiple displacements of the scoop are necessitated by the function of this element which acts as a loading and pressing member.

As previously disclosed, the scoop is provided with a roller I33 on each side thereof; said rollers are normally engaged within the longitudinal body groove or channel 98, whereby the height of the scraping edge I58 of said scoop is fixed with respect to the floor. This height is calculated to bebarely above said floor, should undue strains tend to lift the scoop; since, however, the scoop is pivoted forwardly, away from said scraping edge I56, the weight of the scoop is normally sufiicient to keep the rear edge of said scoop in scraping contact with the floor.

The body floor is not continuously level, however, and reference to Figures 3, 26, 28, 29 will reveal that the floor plate 40 is bent angularly downwards at the rear of the body to form an inclined plane I60. To the lower edge of said plate I60 a pivoted curved section I6| is operable to form a trough-like depression I63 into which the material to be loaded is initially disposed, manually, by the operator of the device.

The curved section I6I is pivoted to the body,-

said running board are slotted at I to eng ge pins welded to suitable points of the side edges of the curved section, the purpose of this arrangement being to move the running board forwardly, out of the way, and to swing also the curved section under the plate I80.

In order that the scoop may drop into the trough I53, for-load-gathering purposes, it is obviously necessary that means be provided to disengage the scoop rollers from the horizontal channel 38, maintaining said scoop at the level of the floor. Such means are in the form of runways or guiding grooves provided in the side extensions I of the body and shown indetail in Figures 26, 27, 28, 29; it will be noted, in said figures, that the channel 36 bifurcates, up and down from the horizontal, into a network of grooves adapted to guide the scoop for a variety of angular movements.

The said grooves are of .the same physical dimensions as the main guiding channel 38 and merge therewith at I18, the upper groove comprises an ascending portion I11 and a descending section I18 opening at I18 to the outer rear edge of the body extension I15. Of course, the terms "ascending" and "descending refer so the motion of the roller in said grooves, a they travel from points I18 to [19. The lower groove comprises an inclined portion I80, substantially parallel to the upper portion I18, and a steep, almost vertical, shorter section I8I ending at I82 just below the end I18 of the upper groove. The network is completed by the addition of a transverse, cross-groove I83 bridging together sections I18 and I80, at approximately half their length, for a purpose to be described later. Finally, pivoted spring-pressed P wls I84-I85 and I88 are disposed at. the points I18I81-I88, respectively, in normal positions as shown in Figure 26.

The purpo s'eof said pawls is to guide the roll-- er' II33 inia givendirectionover one groove at the points I16I81- -I88; thus, in Figure 26, the position X of the scoop, shown in dotted lines, shows the roller I33 just emerging from the channels 36 and bridging the groove I80 over the pawl I84. Consequently, further .movement to the right of the carriage A shall force the roller up the inclined groove I11, and down the groove I18, to the position illustrated in said figure, with corresponding movement of the. edge I56 of the scoop over whatever material may be present in the trough I63.

Further movement (Fig. 27) will lower the scoop somewhat below the.floor level when it reaches the end of its course to the right, at I19 where, outside the groove I18, the free rollers drop, into I82, in the lower groove IBI. This position of the moon is the outermost one of which the block 68 is capable when coupled to the carriage A; in other words, said block does not travel to the right far enough to move the carriage A, and attached scoop, beyond the point where rollers I33 leave the groove I18 just enough to drop into I82, below.

At this point, the projection I38 of the scoop cover I28 engages the turned-in portion I88 of the body roof to prevent said scoop from becoming disengaged from the body; furthermore, this engagement of the cover acts as a pivot to swing the scoop outwardly, under conditions to be described later.

The scoop i now in loading position; upon manipulation of the proper levers, as described before, the movement of the carriage A will be reversed, to the left, and the scoop 'moved accordingly. Since the scoop must drop down into the trough, to gather the material therein, the guiding groove I8I is steeply inclinedso that the roller I33 may guide the scoop edge I58 downwardly (see Figure 28); Therefore, said edge W111 move close to the section II and, finally, scrape against the inclined plane I68, as shown in liglll 29; during this movement, the rollers I |8 hit the pawl I86 which drops back after their passage.

'1he material gathered by the scoop is being pushed into the body as, gradually, said scoop moves leftward until, finally, its edge IE8 is again in contact with the floor 40 and the rollers, after passing under pawl I84, are once more in the channel 86. The leftward movement'is then continued until the loaded material is pushed against the movable wall and compressed there; this compression, due to the inclination of said wall, tends to force the load upwardly. Thus, the pivoted cover of the scoop may be lifted slightly o contact the roof. When this occurs, said contact is made by the rollers I81 (Fig. 11), their purpose being to avoid friction when this contactmg occurs.

The loading operation above described is continued until the collector body is filled up; the load, near the mouth of the body, might render it impossible to push the scoop far enough, inward, to permit its coming back over pawl I84. In that case, therefore, thescoop travel is re versed and the groove I88 utilized to return the scoop to the upper groove for another load portion; thus, the device can be filled until it is no longer possible to move the scoop inward so that the roller I33 is able to lift pawl I88. The scoop is then left in its innermost position to hold th load compressed during transit.

The collector is now in position to be unloaded: for that purpose, the curved section IGI and the running board are swung out of the way to allow free escape of the load. The block 88' is then disengaged from carriage A and moved to the front to engage dog of the movable wall. Upon causing block Iii to move rearward, the wall is carried therewith and, in so doing, expels the load from the body. Since said load, in compressed form, is likely to be bulky, it generally happens that it engages the scoop, which is now free, and pushes the same rearwardly to occupy a position substantially as shown in Fig. 4 the rollers I33 becoming disengaged entirely from the groove I18 and the carriage A pushed out of reach of the block 88.

After the movable wall has been moved to expel the load completely, it is returned to its original front position by the block .66 abutting the lug I82 secured to the carriage M by rivets 183. Since, as stated above, the carriage A is now out of reach of the block 66, it is backed in by means of a coupling device between both carriage consisting of a rod I85 freely supported in sleeves I 96 and I81 secured, respectively, to carriages A and M (see Figs. 5, 8, 9.10, 12) and having nuts or the like at the ends thereof.

Once the movable wall has been pushed to its extreme forward position, the length of the rod I35 is calculated to pull the carriage A. inwardly, to a point where the block 68 can again be clutched to the dogs of said carriage; the scoop is then, once more, in position to effectuate the movements already described.

' ing adapted or the scopeof the arcuate portion of the sides the trough-can be So, from the foregoing description and explanations, the general construction of the device object of the invention should be clear: The said device comprises, essentially, an open-ended enclosure, movable closing means for the ends, one of said movable means called the scoop beto perform a number of oscillating movements," and actuating means for selectively operating one or the other movable means at will.

The advantages of this constructionare obvious: in the case of a garbage collector, for instance, the load is dumped, in small quantities, intothe trough at the back of the collector. Due to the fact that said trough is relatively low, the manual labour involved is reduced to a minimum; furthermore, the back, or mouth, of the collector being open, rather bulky objects such as cases, cardboard boxes and the like can be loaded without trouble. The power-driven scoop exerting a great pressure inwardly, the load is tightly compressed whereby boxes and other hollow objects are crushed to occupy the smallest possible space; thus, a bigger load can be'transported. Again, the front closingmember being movable backwards, the load iseasily and quickly expelled, in rather cramped spaces, since the body is not tiltable. Other features includethe rather tight sealing of the closures to prevent odors, dust and parts of the load from escaping during transit.

Finally, the driving means are so designed that foolproof operation is possible at all times, whereby inexperienced labor can easily and safely operate and man the collector.

It is to-beunderstood that the form of my invention herein shown and described is to be taken as a preferred example of the same, and that various changes as to the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention subjoined claims.

Having thus described my invention, I claim:

I. A carrier of the character described, comprising an open-ended elongated body, loading means at the rear end of said body consisting of a pivoted scoop, unloading means at the other end constituted by a vertical movable wall, a troughat therear of tively engaging and movable wall, and guiding means on the body whereby the scoop may be oscillated to pick material in the trough and load the same in the body against the movable wall.

' 2. A device of the character described, comprisingaquadrangular open-ended body, tracks formed at the bottom of the body sides, said tracks consisting of parallel, spaced and overlapping sections of said sides, carriages movable in said tracks and extending partly inward and partly outward of said body sides, a vertical movable partition secured to one of said carriages on each side. of the body, a scoop having sectorshapedsides and an arcuate wall Joining the pivoted to another pair of opposed carriages, a depressed trough formed at the rearward outer end of the body floor, and a travelling block adapted to move the partition and scoop, whereby material in pickedfby the scoop and loaded into the body against the movable partition acting also as a load-expelling member.

3. In a device as claimed in claim 2,'a pair of opposed spring-pressed dogs disposed on the outside of the scoop the body, means for selecmoving either the scoop or carriages operable to engage the travelling block, whereby said scoop may be moved to and fro in and out of the body, a single dog mounted on the partition carriages engageable with the block in a rearward direction only, a lug secured to said partition carriages for returning said partition forwardly, rollers on said dogs, and manually actuating cams for retracting either the scoop or partition dogs away from the travelling block. 4

4. In a device as claimed in claim 2, a longitudinal channel formed in each side of the body, a roller on each side of the scoop engaged in said channels to guide said scoop, and a network of grooves extended from the longitudinal channels, at the rear of the body sides, for guiding the scoop upwardly over material in the trough, down into saidscoop behind said material and then upwardly into the body and against the vertical partition. 1

5. In a device as claimed in claim 2, a pivoted cover at the top of the scoop arcuate wall, and rollers at the free edge of said cover adapted to contact the body roof when the cover is forced 7. In a device as claimed in claim 2, upstanding vertical extensions formed on the vertical wall carriages for supporting said partition, scraper flang formed on said extensions, and spring means on the partition for pressing said flanges against the body sides.

8. In a device as tuating means comprising a cable to which said block is secured -in the middle thereof, flxed pulleys over which the cable is trained to form a loop, and longitudinally movable pulleys over which theloop ends are trained in opposite directions and secured to a fixed point, whereby movement of said movable pulleys will result in a motion of the cable corresponding to twice the distance travelled by said pulleys. g A

9.- In a device as claimed in claim 2, a curved section constituting one-half of the trough, and means for swinging said section to allow freepassage of the loadexpelled by the rearwardly travelling vertical partition.

10. In a device as claimed in claim 2, block-actuating means including a cylinder, a piston movable in said cylinder, a rod on said piston xtending out of the cylinder for supporting pulleys, pipes for admitting a fluid under pressure at both ends of the cylinder, valvular means for controlling the fluid' into the fluid-admitting pipes, and by-pass means at both ends of the cylinder operable to stop automatically admission of fluid when the piston has reached the ends of its course.

11. In a device as claimed in claim 2, slidable connecting rods Joining the carriages of the partition and scoop, whereby said scoop may be retracted slightly when extended out of the body past the rearward end of the travelling block course.

'12. In'adevice as claimed in scraping edge hinged to the bottom of the vertical partition, and rollers at the bottom of said partition for facilitating movement thereof.

13. A material collecting device, comprising a tubular body, a trough at the lower part of one end of said body, an internally movable partition normally closing the other end of the body, a

claimed in claim 2, block-acclaim 2, a-lower

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