US2371540A - Refuse collector - Google Patents

Description

March 13, 1945 c. w. MOTT I REFUSE COLLECT-OR Filed Nov. V20, 1943 4 Sheets-Sheet 1 I N VEN TOR. [nr/ l V fi/o/f,

March 13, 1945.

C. W. MOTT REFUSE COLLECTOR Filed Nov. 20, 1943 4 Shee'ts-Shegt 2 IIYVENTOR. (ar/ W/ /0// March 13,1945,

C. W. MOTT REFUSE COLLECTOR Filed Nov. 20, 1943 4 Sheets-Sheet 3 IN V E N TOR. (km mm;

I BY

Mal-ch13; 1945. c. w. MOTT REFUSE COLLECTOR Filed Nov. 20, 1943 4 Sheets-Sheet 4' INVENTORQ Carl W/VOZZ, BY-

Patented Mar. 13, 1945 i REFUSE COLLECTOR Company Oshkosh, consin Carl W. Mott lia Grange, 111., assignor to Leach Wis., a corporation of Wis- Application November 20, 1943, Serial No. 511,091

6 Claims. (01. 214-67) This invention has to do with large capacity refuse collecting vehiclesof the type commonly used on city streets for making house to house collections of garbage, trash and other refuse.

The purpose of the invention is to provide, in a refuse collector of the type described, improved means for loading'the refuse into the storage compartment of the collector.

Other more specific objects and advantages of the invention will be apparent to those skilled in the art upon a full understanding ofithe construction, arrangement and operation of "the improved loading means.

One form of the invention is presented herein for the purpose of illustration, butit will of course be appreciated that the invention is capable of being embodied in other structurally modified forms coming equally within the scope of the appended claims.

, In the accompanying drawings: t

Fig. 1 is a partially sectioned side view of a refuse collector constructedin accordance with the invention; f t

Fig. 2 is another sideview of the collector, showing the same in its dumping position;

Fig. 3 is a rear viewof the casing inwhich the loading device is located; a

Figs. 4, 5 and 6 are vertical sections through the loading device, showing the various positions assumed by the material handling plates during each operating cycle; I

Figs. '7, 8, 9 and 10 are schematic views of the loading device--which views correspond respectively to Figs. 1, 4, 5 and 6 in the positions of the material handling platesshowing one. form of hydraulic control means for automatically operating the plates in the desired sequence; and

Figs. 11' and 12 are vertical sections through a similar loading device equipped with an additional material handling member, v

The refuse collector shown in the drawings in cludes a large capacity storage compartment III which is mounted on the chassis H of a motor vehicle. A-casing l2, which houses the improved loading device, is located at the rear end of the the lower portion I of the casing. The lower portion below the opening it isshapedto provide a horizontal receiving trough-l1 of generally-semicylindrical mm; From this trough a transfer r passage 18 extends forwardly and upwardly into the compartment l0. "'A'horizontally elongated packing plate 19' operates" within the receivin trough .l 1, while' a'n'other horizontallyelongated packing plate 20 operates within the transfer passagel8. I

' The ends of the opening l6, trough I1 and pas sage l8 are separated from. the outer side walls of the casing 12 by vertical partitions 2|; which partitionsprovide intervening spaces 22 for the reception of certain parts of the hereinafter described controls. 3

The plate I9 is rigidly secured m horizontal I shaft 23, which shaft is pivotally'mounted above compartment Ill. The compartment 10 is hinged at I3 to the chassis l l, and the casing I2 is hinged at It to the compartment l0, whereby to permit both the compartment andthe casing to be moved into the position shown in Fig. 2 to dump the refuse from the collector.

The rear wall of the casing I2 is provided at a low level witha horizontally elongated opening I 6 through which the refuse being collected is adapted. to be dumped from portable containers into.

the trough. in'bearings carried'by the partitions 2|. The bottom 24 of the. trough iscurved in an are about the axis'of the shaft 23, and the plate [9 extends radially fromthe shaft to a point adjacent the bottom trough. The plate I 9 is adapted to oscillate back and forth in the trough ll from a retracted position in whichits, free edge 25 is located in the vicinity. of the upper edge 26 of theopening lfilseefFfigQl) into an advanced position in whichits free edge 25 is located in register with the lower rear edge 21 of the pas sage l1 (seeFig. 5); I

When the loadi g deviceis in its normal .or refuse receiving position the plate l9 isin its retracted position and the trough ll is exposed through the opening it. When the'plate I9 is oscillated forwardly into its advanced position 'after the trough l1 has been filled with refuse the refuse in the trough is swept forwardly: and

upwardly fromthe trough by the plate 19 into the passage l8.

The plate 20 is rigidlyse'cured toahorizontal shaft 28, "which shaft is pivotally mounted above the passage ll inibearings 'carrie'd by the partitions 2|; Thebottom 29 of the passage is curved in an arc about the axisof the shaft ZBQand the plate 20 extends radially from the shaft to,.a"poin t adjacent the bottom 29 of the passage. The plate 20 is adapted toos'cillate: back andforth from a retracted position in which its free edge 30 is located. adjacent the shaft 23 ata point a substan tial distance rearwardly of thelower rear edge of the passage l1 and an advanced position inwhich its free edge 30, islocated within the passage l8 well forwardly of the. lower reariedge 2 of the latter. Theupper wall 3| ofthe passage I 8 extends forwardly. and upwardly. from .theshaft across which continuation the plate 20 sweeps in oscillating. -forwardlyfrom its retracted position a to its advanced position.

When the loading device is in its normal refuse receiving position the plate 19 is in its retracted position-and the plate 20 is in its advanced position, all as shown in Fig. 1. When the loading device is placed in operation the plate 20 moves first, oscillating rearwardly from it advanced position into it retracted position, as shown in Fig. 4. -'As soon as the plate. "reaches its re-,

tracted position the plate l9 oscillates forwardly into its advanced position, pushing before it all of therefuse inthe trough H, as shown in Fig. 5. As soon asthe, plate l9 reaches its advanced position theplate 20 comesinto action again, osci1 lating forwardly from its retracted position into its advanced position and pushing before it all of therefuse from the top-of the plate 19 into the passage i8. After this hastaken' place the plate 19 oscillates back into its retracted position again, in readiness for the nextloading operation.

Any suitable form of control means may be employed for causing the plates l9 and 20 to move in the above described sequence. In the particularembodiment shown the plates [9 and 20 are operated by hydraulic'cylinders 32 and 33. While theycan be operated through manual controls by observing the proper sequence, automatic controls are preferable for the purpose...

The opening may be provided, ifdesired, with a vertically slidable cover 34. The cover 34 may be raised and lowered automatically by the free edge 25 of the plate l9. -When the plate 19 is oscillated rearwardly into its retracted position itwill-raise the cover 34, as shown in-Fig. 4, and when itis oscillated forwardly into its advanced position it willlower the cover. If the loadin device istobe inactive for any length of time,

the control for the device can be manipulated until the plate l9 has oscillated forwardly into its advanced position wherebyto allow the cover 34 to close, after which the control means canb'e shutoff, leaving the cover closed.

The cylinders 32 and 33arelocated above the plates l9 and 20 in the center of the upper portion' of the casing I2; Theupper end of the cylinder 32 is ,pivotally connected-to the center of a cross rod 35 which'is fixedly mounted in the partiti0ns2l. The lower end of the piston rod 36 in thecylinder 32 is pivotally connected to the center of a relatively short cross rod 31. The rod 3!.is movable and is connected at its ends to a pair of lever' f38. The levers 38,-which are located adjacent the ends of the plate ii), are pivotally conncted at corresponding end to a fixed crossrod 39 and are-pivotally connected at their free ends, beyondthe rod 31, to links "which are in turn pivotallyconnected to brackets 4| on the back of the plate 19. When the piston rod 36 is in its retractedpositionin thecylinder 32 it will hold the plate 19in its retracted position, as shownin Fig.

swing the plate 49 into its advanced position, as showninFigjJv p The upperend of .the'cylinder 33 is pivotally connected to the center of another fixed cross rod 42, andthej'lower end'of the piston rod 4 in the cylinder is pivotally connected to the center of -1. .When the piston rod 3-8 is projected it'will The cylinders 32 and 33 may be so hooked up in a hydraulic system as to permit the cylinders to be operated automatically in proper sequence by merely manipulating a master valve 45. Such a system is illustrated schematically in Figsl 7 to lflinclusive. 5

This hydraulic system includes, in addition to the master valve 46, a tank 41 for the oil or other actuating liquid, a continuously operating pressure purnp 48, and two four-way valves 49 and 50. The master valve 46 is provided with a readily accessible operating handle -5|.- The various connectingconduits are represented in Figs. 7 to 10 inclusive by either solider dotted lines at various stages in the operating cycle, depending on whether the oil in the same happens tube under pressureor not, solid lines indicatingpressureand' dottedlines indicating an absence of pressure.

Describing the hydraulic system in more detail-a conduit 52 extends from the tank 4'! to the pump 49, and another conduit '53 extends from the pump 48 past a check valve 54 to two branch conduits 55 and 56. The branch conduit 55 extends to one of the ports of the four-way valve 49, while the other branch conduit 56 extends to oneof the ports of the other four-way valve 59.

From the three remaining ports of the four-way valve 49, conduits 51, 58 and 59 extend respectively (1) to the lower endof thecylinder 33, (2) to the upper end of the cylinder 33, and (3) to a conduit 99 which discharges back into thetank 41. From the three remaining ports of the fourway valve 5ll, conduit 6t, 62 and 63 extend respectively 1) to the lower end of the cylinder 32-, (2) to the upper end of the cylinder 32, and (3) to the previously mentioned conduit 59 connecting with the conduit .60. A conduit 64 extends from the conduit 53 to the master valve 46. The previously described conduit '80 extends from the master valve baackinto the tank 47 The four-way valve 49 is mounted on the cylinder 32 and is provided with an operating lever 65 which is adapted to be moved through an angle of in first one direction and then the other by stops 9'6 and 61 mounted on a rod 68. The rod 58is carried by and moves with the piston rod 36 in the cylinder 32.

When the piston rod 36 reaches its-retracted position (seeFig. 7) it turns the valve 49 into a positionin which the conduit 55 is placed in communication with the conduit 5'! and the conduit 58 is placed in communication with the conduit 59. When the piston rod 36 reaches its pro- Jeoted position (see Fig. 9) it turns thevalve 49 into a position in which theconduit 55 is placed in communication with the conduit 58=ahdsthe conduit 5'! is placed in communication with the conduit 59. I I

When the valve 49 is first moved into the position shown? in Fi 7, the valve 50 will be in the position shown in Fig. 7, with the conduit 55 in communication with the conduit GI and the corn duit 62 in communication with the conduit; 63. The valve 50 will remain in that positionuntil such time as the master valve 5|v is moved. from its cpenpositicn into the closed position shownlin Fig. 7; When the master valve 5! is closed the resulting pressure of the oil in the then communicating conduits 55 and 51 will immediately cause the pistonrod 43 in the cylinder 33 to be retracted, moving the plate from the advanced position shown in Fig. 7 to the retracted position shown in Fig. 8. r

The four-way valve is mounted onthe cylinder 33 and is provided with an operating lever 69 which is adapted to be moved through an angle "of 90 in first one direction and then the other by stops I6 and TH mounted on a rodl2. The rod 12 is carried by and moves with the. piston rod 43 in the cylinder 33.

When the piston rod 43 in the cylinder .33 reaches its fully retracted position (see Fig.8) the valve 50 will be automatically turned from the position shown in Fig. 7 into the position shown in Fig. 8. As soon as the valve 56 reaches the position shown in Fig. 8 the pressure of theoil in the then communicating conduits 56 and '62 will immediately cause the piston rod 36 inlthe cylinder 32 to be projected. When the piston rod 36 reaches the fully projected position shown in Fig. 9 the valve 49 will be automatically moved from the position shown in'Fig. 8 into the posi-,

tion shown in Fig. 9. As soon as the valve 43 reaches this position the pressure of the oil in the then communicating conduits and 58'will immediately cause the piston rod 43 in the cylinder 33 to be projected. When the piston rod 43 reaches the fully'projected position shown in Fig. 10, the valve 50 will be automatically moved from the position shown in Fig. 9 to the position shown in Fig. 10.- As soon as the valve 50 reaches the position shown in Fig. 10 the pressure of the oil in'the then communicating conduits 56 and BI will immediately cause the piston rod 36 in' the cylinder 32 to be retracted, completing the operating cycle.

To prevent the operating cycle from being continuously repeated, the master valve 46 is moved from its then closed position into an open position, allowing the oil under pressure inthe conduit 64 to be short-eircuited back to the tank through the conduit 66. To start the operating cycle it is merely necessary to move the master valve 46 into the closed position shown in Fig. '7.

The master valve 46 can be operated by hand at the desired time to stop the operation ofthe cylinders 32 and 33 at the end of the cycle, or'it can, if desired, be arranged in the path of movement of any suitable control member (not shown) connected either with the piston rod 36 or with some part moving in coordination therewith,

whereby when the piston rod 36 returns finally to its retracted position at the completion ofthe .cycle the master valve 46 will be automatically moved into its open or inactive position.

When the storagecompartment I0 is filled with refuse and ready for dumping the collector is driven to a suitable location and the casing I2 swung up into the out-of-the-way'position shown in Fig. 2. This may be done, if desired, by using the cylinder 32. Arms I3 are secured to the ends of the oscillating shaft 23 in the spaces 22 at the sides of the casing l2, and long depending links 14 are pivotally connected at their upper ends to brackets H5 at the rear ends of the sides of the compartment H). The links 14 are normally housed in the spaces 22. When the casing I2 is to be raised into the position shown in Fig. 2. the master valve 46 is closed momentarily until the arms 13 have moved into the lowered position shown in Fig. 5, whereupon the free lower ends of the links 14 arehooked up to the ends of the arms I3'by means of latches 16. As soon as this has been accomplished the master valve 46 is again closed and kept closed until the arms 13 have: moved into the position shown in Fig. 1. This movement will force the links 14 into the straight line position shown in Fig, 2, with the packing plate 20. The member 16 is adapted to move up and down, in synchronism' with the forward and backward movement of the plate Ml. When the packin'g late I3 is in its elevated refuse receiving position and the packing plate 20' is in its forward refuse holding position, as shown in Fig. 11, the member i8 is in its lowered position, in which position it will prevent the refuse from working upwardly into the space at the back of the plate 232- Whenthe plate 20 is moved rearwardly,as shown in Fig. 12, toreceive a new charge from the plate It, the member '18 is, moved upwardly-into an out-ofthe-way position.v This movement of the member 18 is accomplished by mounting the member in vertical guides and connecting it byga link 19 with an arm 86 on the back of the plate 26'.

l. Ina refuse collector, astorage compartment for receiving a number of charges of refuse, a stationary receiving trough into which refuse is adapted to be dumped prior to being transferred to the storage compartment, said trough having capacityfora single charge of refuse, a transfer passage between the trough and the compartvment, and two pivotally mounted refuse handling members which are oscillatable back and forth in arcs between retracted and advanced positions, one of said members being located in'the trough and upon each charging operation being advanced downwardly and forwardly to sweep all of the refuse in the bottom of the trough from the surface. o-f'the latter into a relatively ele- .vated position, in which elevated position said charge of refuse is temporarily supported on the surface of the first mentioned member, and the other of saidmembers being located above the trough and upon each charging operation being advanced to sweep said refuse from the surface of the first mentioned member into the transfer passage. 2. Ina refuse collector, a storage compartment dling members which are oscillatable back and forth in arcs between retracted and advanced positions, one of said members being located in the trough and upon each charging operation being advanced downwardly and forwardly to sweep all of the refuse in the bottom of the trough from the surface of the latter into a relatively,

elevated position, in which elevated position said charge of refuse is temporarily supported on the surface of the first mentioned member, and the other of said members being located above the trough and upon each charging operation being advanced to sweep said refuse from the surface of the first mentioned member into the transfer passage, and means for automatically oscillatstationary receiving trough into which refuse is adapted to be dumped prior to being transferred to the storage compartment, said trough having capacity for a single charge of refuse and being provided with a receiving opening at the rear of the same, a transfer passage between the trough and the compartment, and two pivotally mounted refuse handling members which are oscillatable back and forth in arcs between retracted and advanced positions, one of said members being located in-the trough and upon each charging operation being advanced downwardly and forwardly to sweep all of the refuse in the bottom of the trough from the surface of the latter into a relatively elevated position, in which elevated position said charge of refuse is temporarily supported on the surface of the first mentioned member, and the other of said members being located above the trough and upon each charging operation being advanced to sweep said refuse from the surface of the first mentioned-member into the transfer passage, and a vertically movable closure for said receiving opening.

4. In a refuse collector, a storage compartment for receiving a number of charges of refuse, a stationary receiving trough into which refuse is adapted to be dumped prior to being transferred to the storage compartment, said trough having capacity for a single chargeof refuse and being provided with a receiving opening at the rear of the same, a transfer passage between the trough and the compartment, and tWo pivotally mounted refuse handling members which are oscillatable back and forth between retracted and advanced positions, one of said members being located in the trough and upon each charging operation being advanced to sweep all of the refuse in the bottom of the trough from the surface of the latter into a relatively elevated position, in which elevated position said charge of refuse is temporarily supported on the surface of the first mentioned member, and the other of said members being located above the trough and upon each charging operation ,being advanced to sweep said refuse from the surface of the first mentioned member into the transfer passage, and a vertically movable closure for said receiving opening, said closure being movable into itsclosed position priorto'the trough being swept by the first mentioned refuse handling member.

5. In a refuse collector, a storage compartment for receiving a number of charges of refuse, a stationary receiving trough into which-refuse is adapted to be dumped prior to being transferred to the storage compartment, said trough having capacity for a single charge of refuse and being provided with a receiving opening at the rear of the same, a transfer passage between the trough and the compartment, and two pivotally mounted refuse handling members which are oscillatable back and forth between retracted and advanced positions, one of said members being located in the trough and upon each charging operation being advanced to sweep all of the refuse in the bottom of the troughfrom the surface of the latter into a relatively elevated position, in which elevated position said charge of refuse is temporarily supported on the surface of the first mentioned member, and the other of said members being located above the trough and upon each charging operation being advanced to sweep said refuse from the surface of the first mentioned member into the transfer passage, and a vertically movable closure for said receiving opening, said closure being operated by the first mentioned refuse handling member and being moved into its closed position prior to the trough being swept by said member.

6. In a refuse collector, a storage compartment for receiving a number of charges of refuse, a stationary receiving trough into which refuse is adapted to be dumped prior to being transferred to the storage compartment, said trough having capacity for a single charge of refuse and being provided with a receiving opening at the rear of the same, a transfer passage between the trough and the compartment, and two pivotally mounted refuse handling members which are oscillatable back and forth in arcs between retracted and advanced positions, one of said members being located in the trough in a downwardly facing position above the receiving opening and upon each charging operation being advanced downwardly and forwardly to sweep all of the refuse in the bottom of the trough from the surface of the latter into a relatively elevated position, in which elevated position said charge of refuse is temporarily supported on the then upwardly facing surface of the first mentioned member, and the other of said members being located above the trough in a position closing the transfer passage and upon each charging operation being first retracted rearwardly before the advance of the first mentioned member and then advanced forwardly to sweep said refuse from the surface of the first mentioned member into the transfer passage.

CARL W. MO'I'I.

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