US2832488A

US2832488A - Refuse vehicle

Info

Publication number: US2832488A
Application number: US519751A
Authority: US
Inventors: Ernest F Kamin
Original assignee: Individual
Current assignee: Individual
Priority date: 1955-07-05
Filing date: 1955-07-05
Publication date: 1958-04-29
Anticipated expiration: 1975-04-29

Description

April 29, 1958 E F. KAMIN REFUSE VEHICLE 3 Sheets-Sheet 1 Filed July 5, 1955 y INVENTOR. Ernesf EKamin hw/U/k April 29, 1958 E. F. KAMlN REFUSE VEHICLE 3 Sheets-Sheet 2 Filed July 5, 1955 b\ 3 Q H F a Q a E; 3 WV .M Q s M 1 1 WW X JNVENTOR. 51 11 as? EKamin BY April 29, 1958 E. F. KAMIN REFUSE VEHICLE 3 Sheets-Sheet 3 Filed July 5, 1955 INVENTOR. ErnesPFKa min BY mohuuqun PNVAUD United States Patent REFUSE VEHICLE Ernest F. Kamin, Portland, Oreg.

Application July 5, 1955, Serial No. 519,751 14 Claims. (01. 214-518) This invention relates to a refuse collection vehicle having a bucket type loader mechanism and a load packing and expelling mechanism.

One object of my invention is to provide the nondump body of a refuse vehicle with a hydraulic ram mechanism for packing material carried within the body and, selec- 'tively, for expelling the material through the rear of the body.

Another object of my invention is to provide such a packer or expeller together with a bucket loader, both the packer and loader being hydraulically actuated from a common control system allowing one or the other to function in sequence but not simultaneously.

In the art to which this invention pertains, refuse packers and bucket loaders of various configurations are well known. In conjunction with a closed refuse containing body, it is a function of the conventional packer to compress the material carried within the body thereby increasing materially the carrying capacity and decreasing the number of trips which must be made to a dump area or incinerator. At the same time, it is a function of the conventional bucket loader to receive charges of material adjacent the rear of the truck, lift the charge into the air, and dump it into the body. At this point, an inspection of these conventional mechanisms brings home an interesting point. In terms of body shape or design, the effect of providing a bucket loader and/ or a packer having sufficient movement also to expel the refuse material are cumulative. That is to say, the conventional pivotal bucket loader swings on long arms through an are up and over the body. It thus is best suited to a high, short truck body constructed with a rounded outline conforming to the arc of the pivotal movement. At the same time, packers heretofore utilized to eject the refuse material through the rear of the truck also have performed more efliciently with a short, high truck body. This is for the apparent reason that most packers are hydraulically actuated and the factor limiting the design is the limit of the stroke of the ram. The movement of the packer thus must be in accord with the limit of the stroke of the hydraulic ram. With a limited amount of space available for the mounting of the hydraulic ram behind the packer (in the retracted position), the overall stroke quite apparently must be short. Accordingly, to effect a full ejection and thus dispose of the entire load of refuse material, the body itself must be short. In summary, these factors have required that the conventional refuse body employing these devices be short and, to increase the load, be

high.

the vertical clearance available in underpasses and the like. This limitation on vertical height further limits the longitudinal length of a body employing a packer and/ or bucket loader as above described. Secondly, a majority .of those refuse vehicles which are now in use and which 2,832,488 Patented Apr. 29, 1958 do not employ packers and loaders are equipped with boxlike dump bodies which are long and low in silhouette. Accordingly, to equip these conventional refuse collecting bodies with a packer and/ or a bucket loader is impractical with the devices heretofore known. To obtain the benefits of a packer and/ or a loader, the owner must either install a completely different body or purchase a new vehicle with a short, high body.

In view of the above factors, it is one object of the instant invention to provide a packer and/ or bucket loader for use with a body which is long and low (more or less rectangular in cross section) and which thus is of conventional design in the refuse collection art. A correlated objective,- of course, is to provide a bucket loader and/or packer which can be fitted to existing conventional truck bodies with a resultant saving to the operators.

Another object of my invention is to provide the nondump type of body of a refuse vehicle with a rear opening to which an improved novel rear tailgate is fitted, the tailgate being retained in place by means of a lip and dog structure which effectively will resist displacement in spite of the large forces imposed thereon by a packer.

A related objective is to provide a rear tailgate as above described with a hinge allowing, in sequence, limited vertical movement and a full pivotal movement with respect to the rear opening in either a dump or a nondump body.

Yet another related objective is to provide a nondump body having both a packer and a loader with detachable means for interconnecting the bucket loader and the tailgate so that as the bucket moves from a load toward a discharge position, the tailgate is lifted vertically clear of a retention mechanism and then is pivoted to an open position.

Yet another object of my invention is to provide a pivoted bucket loader with releasable latch means which fixes the bucket against pivotal movement with respect to the lifting arms until a snubber line of preselected length releases the latch allowing the bucket to pivot and dump into the body when the bucket overlies a top opening.

In a nondump body for a refuse vehicle having both a movable packer and bucket loader, it is a further object of my invention to provide control means for actuating the two movable elements, which control means cooperates With a mechanical mechanism carried by the packer itself in order to disengage or to stop the actuating mechanism for the packer each time the packer is fully retracted. This latter mechanism thereby also defines a visual indiciurn of the position of the packer allowing the operator to be informed when the packer is fully retracted and, as a consequence, an additional charge of material can be fed to the body.

Yet another object of my invention is to provide a packer for a refuse vehicle, said packer being actuated by two expansible hydraulic motors which are joined together with an elongated lever. With the length of this lever and the maximum stroke of the hydraulic motors correlated, the packer then is allowed to move the full length of the nondump body to expel material even though the length of that body may begreater than in previous refuse vehicles.

These and other objects and advantages of my invention will become apparent during consideration of .the following detailed description, taken in conjunction with the accompanying drawings, wherein:

Fig. 1 is a side view of the vehicle showing, by dashed outline, the movement of the bucket loader and packer;

Fig. 2 is a detail view of the rear portion of the body only, showing the manner in which the bucket and tailvertical and pivotal movement for the rear tailgate;

Fig. 3' is a rear view of thetruck showing the bucket loader in a lower or load position;

Fig. 4 is a cross section detail, taken substantially on the line 4-4 of Fig. 1, showing the packer in place within the'hollow body;

Fig. "5 is a cross section detail, taken substantially on the line 5-5 of Fig. 4, showing the packer per se;

' Fig. 6 is a cross section view of the entire body, taken substantially on the line 6-6 of Fig. 1, showing the relationship of the two hydraulic motors to the elongated lever for actuating the packer and further indicating by direction arrows in dashed outline, the movements of the packer within the body;

Fig. 7 is a schematic or diagrammatic representation of the hydraulic control system which is common to the by draulic mechanism actuating both the packer and the bucket loader; and

Fig. 8 is a detail view, taken substantially on the line 8- 8 of Fig. 6, showing the three control valves and their relationship to the mechanical projection carried by the packer in order to move the packer control valve to a neutral position each time the packer is fully retracted.

As best revealed in Figs. 1, 3, and 4, the body 9 is of a long low silhouette and is provided with a hollow interior. Because rather substantial forces are generated when a packer is used in conjunction with this body, the sides are reinforced with multiple structural members 10 which may be pipes or angles as shown in Fig. 1. In conventional manner, the body itself is provided with rear and top openings, the former having a rear tailgate 11 arranged in position thereover and the latter having a pivotal shieldlike covering 12 with side flanges arranged with respect thereto. In cross section, the top closure 12 is U-shaped and a pivotal mounting is provided at 13 upon the front wall of the body. The rear tailgate 11, on the other hand, is only slightly curved from a plane and is mounted upon the body by means of a novel hinge element 14. It is the function of this hinge element .14 to allow both a vertical and a pivotal movement of the tailgate 11 as hereinafter will be described.

Referring first to the bucket loader mechanism, this includes a pair of elongated arms 15 pivotally mounted, at 16, and mutually carrying a large bucket 17. As best seen in Fig. 3, the bucket itself is of substantial capacity so as to allow several loads from a carrying can or the like to be dumped before the capacity of the bucket is reached. Terminally, the arms 15 carry square plates 18 and the bucket carries protruding knobs 19 which coact with the plates to prevent a counterclockwise movement of the bucket with respect to the arms as seen in Fig. l. A spring 20 on each side of the body interconnects an appropriate one of the arms 15 with the side of thebucket 17 and tends to hold the opposite square plate 18 against a pin 19.

In cooperation with the above structure, each of the plates 18 carries a protruding pin 21 as part of a mechanism for preventing inadvertent rotation of the bucket in a clockwise direction as viewed in Fig. i. In cooperationwith the pin 21, a releasable latch 22 is pivoted upon the bucket and is provided with a hooked end which engages the pin. This latch is joined'to an elongated snubber line 23 at the opposite end, the snubber line in turn being joined to an eye 24 on the upper portion of the body. As shown by the correlated full line and dashed line positions in Fig. l, the length of the snubber line 23 is calculated so as to release the latch 22 when the bucket overlies the top opening in the body. Until the moment that the bucket reaches this precise position, the latch continues to hold the same against inadvertent rotation or spillage of the refuse material. Further, by correlating the length of the top opening with the length of the snubber line, the position of dumping can be precalculated for the particular truck body under consideration.

To move the arms and bucket loader pivotally from other.

the full line load position to the dashed line discharge position of Fig. 1, I provide a hydraulic mechanism. This includes a pair of extensible hydraulic motors 25 which pivotally are joined at one end, as at 26, to the truck body. The end of the piston rod of each motor 25, in turn, pivotally is joined to a triangular framework 27 to support the arms 15 as by a pin 23. In this manner, as pressure fluid is fed to the hydraulic motors 25, the piston rods cause the entire arms 15 and triangular framework 27 to pivot about the point 16 thereby lifting the bucket from the load to the discharge position.

As the bucket reaches the discharge position, it is necessary that the top closure element 12 be swung to an open position. I efifcct this opening movement by joining one corner to the top closure element to a rod 29 on each side of the body. The opposite end of each of these rods is joined to an appropriate point on the arms 15 thus allowing the pivotal opening movement of the top closure illustrated by the full and dashed lines in Fig. l.

Turning now to Figs. 1, 5, and 6, the details of the packer will be described. To this end, the packer 30 is a cart-like structure having two wheels 31 at each side thereof. These wheels ride on the floor of the body so as to support the weight of the packer and material carried thereby. In adition, the structural framework of the packer itself is reinforced with appropriate brace members, angle irons, and the like so as to lend the required strength thereto. The working surface of the packer consists of a smooth sheet metal skin having a vertical portion and an inclined portion as shown in Fig. 5. In cooperation with thestructural framework, the packer cart thus overlies a substantial open area in which the lever and hydraulic motor mechanism of Fig. 6 is arranged.

To guide the packer cart and to restrict the movement thereof to a straight line movement, channel guides 32 aremounted adjacent the floor on each side wall of the body 9. In cooperation therewith, the packer carries projecting friction slides 33 which are mated to and ride within the open webs of the channels 32. These friction slides run the entire length of the packer cart and thus serve an additional function by preventing tipping or lifting of one portion of the cart with respect to the In addition, the lower sides of the packer cart carry'twojournaled wheels 34 which ride the side walls of the truck body 9 above the channels 32. These particular wheels are journaled about a vertical axis and thus resist uneven side forces or loads imposed as the packer is moved longitudinally'the length of the hollow body member.

-As best shown in Fig. 6, it is the dual function of the packer 30 to move longitudinally within the hollow body between a retracted position adjacent the front of the body and a discharge position adjacent the back of the body selectively to pack material carried within the body and to expel material through the aforementioned rear opening. In furtherance of this function, a first expansiblc hydraulic motor 35 is pivotally mounted upon the rear of the body and a longer stroke hydraulic motor 36 is pivotally joined to the center point of the packer itself. An elongated lever means 37 is pivotally mounted, as at 38, upon the floor of the body and is joined at opposite ends to the piston rod of the motor 35 and the casing of the motor 36. The two hydraulic motors 35 and '36 are arranged so as to act oppositely as hereinafter will be described. Accordingly, as the piston within the motor 35 is retracted, that within the motor 36 is extended cooperatively to pivot the lever 37 and move the packer 30 from adjacent the front of the truck body toward the rear thereof.

The function of the several expansible hydraulic motors controlling both the bucket loader and the packer are best described with reference to the schematic diagram of Fig. v7. In this figure, the reference numeral 39 designates a pump, 40 a fluid reservoir, and 41 a pressure relief valve.

The pump 39 is driven from a power takeoff shaft on the vehicle itself or by other appropriate means and the various conduits illustrated intermediate the pump and the various motors may take the form either of hydraulic hoses or pipes where appropriate. In any event, a first twoposition control valve 42 selects the direction of flow of the pressure fluid. This valve is a two-position valve which feeds the pressure fluid either to the two motors 25 for the bucket or to the two

motors

35 and 36 for the packer. It here will be noted that I purposely have selected a valve which cannot feed pressure fluid simultaneously to both of these elements since a simultaneous actuation is unnecessary and may lead to confusion in certain instances. For example, were the packer moved forward slightly at the time that a load of refuse was dumped through the top opening into the body, some of the refuse would fall behind the packer thereby physically blocking a full retraction of the packer and requiring a cleaning of the truck body before operations could continue.

Continuing with the hydraulic control and actuation circuit illustrated in Fig. 7, a conventional three-position valve 43 controls the supply and exhaust of pressure fluid to and from the twin bucket loader motors 25. In one position, pressure fluid is fed to one side of each piston while it simultaneously is exhausted from the opposite side thereof. In a second position of the valve 43, the flows are reversed thereby retracting'the pistons. The third position is a conventional hold position with the handle in an intermediate position whereby all flow of pressure fluid to and from the motors is blocked or stopped.

The packer control valve 44 is similar to the bucket control valve in that it also is movable to three control positions. The first of these positions extends the packer, the second retracts the packer, and the third (intermediate position of the handle) is a hold or no-flow position intermediate the other two positions. As one feature of my invention, however, the packer itself carries a projecting rod 45 (see Figs. 6 and 8). This rod projects through an aperture in the front wall of the truck body 9 adjacent a control board 46 upon which the

valves

42, 43, and 44 are mounted. This point of projection is correlated so as to be. effective adjacent the protruding lower portion of the control handle 44 for the valve controlling the packer motors as shown in Figs. 7 and 8. A tension spring 47 is joined to the valve control handle 44 so as to bias the same toward a position which causes the

motors

35 and 36 to retract the packer. In a typical operational sequence, the truck driver moves the handle 44 against the force of this spring to cause the packer to move toward the rear of the body either to compact the material within the body or to expel the entire load through the rear opening. Upon completion of this operation, the truck driver merely releases the control handle 44 whereupon the spring 47 returns it to the full line position shown in Fig. 7. This full line position causes the

motors

35 and 36 to retract the packer. As the packer arrives in the fully retracted position, the projecting rod 45 physically contacts the handle 44 moving the same to a neutral or no-flow position shown in Fig. 8. It thus cuts off flow to the packer and precisely positions the parts adjacent the front wall of the truck body as desired for further loading operations.

In Fig. 2, I have shown a detachable means for interconnecting the bucket loader and the tailgate in order, sequentially, to lift the tailgate 11 vertically and pivotally. As will be evident, the packer 30 imposes substantial forces upon the tailgate 11 when material is compressed within the body. For this reason, I construct two separate retention mechanisms for the rear tailgate 11. The first of these consists of a series of releasable dogs 48 which interconnect the sides of the body and the tailgate to help retain the latter in a covering posi tion with respect to the rear opening. When the tailgate is to be released, these dogs are snapped open, their func- 6 tion being similar to the latches or dogs on a piece of luggage.

As a further retention structure, I provide a vertical lip 49 across the lower back portion of the body. This lip may take the form of an exemplary angle iron or the like and it is proportioned such that the lower margin of the tailgate 11 fits therein. With the dogs 48 closed and the tailgate positioned within the lip 49, the forces generated by the packer 30 successfully and safely are re sisted. On the other hand, when the tailgate must be opened so as to expel the entire load, the dogs 48 are released and a detachable chain 50 is secured intermediate the bucket 17 and the tailgate. This chain fits over an eye in the tailgate and a hook on the bucket. It is'of preselected length such that a movement of the bucket from the load position toward the discharge position will first lift and will then pivot the tailgate to an out position. This sequential vertical and pivotal movement of the tailgate is accommodated by the aforementioned hinge element 14 and is best illustrated in Fig. 2. Here again, the direction or selection valve 42 cooperates in that the operator visually can observe if the tailgate is entirely open as he manipulates the valve 42 to allow the packer 30 to expel the load through the rear opening.

In use, it will be noted that I have provided a nondump body from which the refuse material is ejected upon appropriate manipulation of the packer 30. This provides a more simple assembly and one which is more compact and durable in construction. Furthermore, by eliminating the required tilt motors which conventionally tilt a dump body, I have eliminated an item of substantial expense and have made the operation more flexible, safe, and eflicient. At the same time, of course, my invention can be used as an attachment for either dump or nondump existing bodies.

When an operator begins his rounds, the truck body 9 is empty and the bucket 17 is carried in full line position shown in Fig. 1. The carrying cans, if such are used, fit within the bucket itself and thus are readily available for use when the first stop is made. Further, because of the substantial capacity of the bucket 17, several stops can be made before the capacity of the bucket itself is reached. Once this capacity has been reached, the

valves

42 and 43 are manipulated so as to pivot the arms 15 and the bucket 17 from the whole line to the dashed line position of Fig. 1. During this movement, the latch 22 prevents pivotal movement of the bucket until the bucket overlies the top opening of the body. At that point, the snubber line 23 tips the latch and allows the weight of the contents to pivot the bucket to the position shown by dashed lines in Fig. l. Concurrently, of course, the rod 29 has swung the top closure element 12 from a closed to an open position so as to allow the refuse to fall into the body and against the.

retracted packer 30. v

. After several bucketloads of refuse have been dumped into the body, the

valves

42 and 44 are manipulated so as to move the refuse material rearwardly in the body and compress the same. A typical operation of the packer is effected by manipulating the valve 44 simultaneously to retract the piston of the motor 35 and extend the piston of the motor 36. This pivots the lever 37 and moves the packer the desired distance. After an appropriate movement, the conrol handle of the: valve 44 is released whereupon the spring 47 returns it to the full line position shown in Fig. 7. The packer then is retracted and, as it is fully retracted, the projecting rod 45 contacts the control h andle' 44 moving the valve to the neutral position. During the course of the day, the load within" the body may be compacted several times therebymaterially increasing the carrying capacity. Toward the, end of the day, the truck body will be substantially full and compacted so asfto make necessary an ejection of the refuse at a dump of the like. Toejec't material, chain 50 first is connected intermediate the bucket 17 and the tailgate 11. Thevalves 42 and 43 then are manipulated so as to raise the bucket to a point about half way between the loaddischarge positions. This movement causes the chain 50 first to lift the tailgate clear of the lip 49 and, thereafter, to pivot the tailgate to an open position. -By a manipulation of the

valves

42 and 44, the packer then can-be extended completely so as to eject the load through the rear opening. A return movement of the packer then is effected, the bucket is loaded, and the chain 50 disconnected whereupon the dogs 43 can be closed and the truck is again ready for use.

'It now will be appreciated that the combination packer and bucket loader mechanism is of particular utility with respect to a truck body having a long low or boxlike silhouette. This type of body is more or less conventional in the industry and contrasts with the high short bodies required with many prior packers and bucket loaders. Further, by providing the dwcribed valve and hydraulic actuation mechanism, I have caused the retraction of the packer itself to effect an automatic shutoff of the packer hydraulic mechanism. This particular structure also defines a visual indicium means by which the operator can be assured that the packer is properly positioned in the fully retracted position before he begins the manipulation of the bucket loader. Were this not true, it is possible that a load of refuse might be dumped through the top opening if the packer were not fully retracted, thus allowing some of the refuse physically to block the retraction of the packer. In actual commercial use, I have found that my improved refuse vehicle ispractical, efiicient, and less costly to construct than those refuse vehicles heretofore available.

I claim:

1. In combination with a vehicle to which is fixed an elongated hollow body having rear and top openings, packer means movable longitudinally within said hollow body between a retracted position adjacent the front of the body and a discharge position adjacent the back of the body selectively to pack material carried within the body and to expel material through said rear opening, bucket loader means pivotally mounted upon said body for movement between a load position adjacent the rear of the body and a discharge position overlying said top opening, and control means interconnecting said previously mentioned means selectively to actuate either separately but not both simultaneously.

2. An attachment for a refuse collection vehicle to which is fixed an elongated hollow nondump body of low silhouette having rear and top openings, said attachmerit including hydraulically actuated packer means movable longitudinally within said hollow body between a retracted position adjacent the front of the body and a discharge position adjacent the back of the body selectively to pack material carried within the body and to expel material through said rear opening, said attachment also including hydraulically actuated bucket loader means pivotally mounted upon said body for movement between a load position adjacent the rear of the body and a discharge position overlying said top opening, and hydraulic control means interconnecting said previously mentioned means selectively to actuate either separately but not both simultaneously, said control means including a movable valve located without said body and controlling the flow of hydraulic fluid to said hydraulically actuated packer, said movable valve cooperating with mechanical means carried by the packer for moving the valve to a neutral position when the packer is fully retracted thereby also defining an indicium of the position of the packer.

3. In combination with a vehicle to which is fixed an elongated hollow body having rear and top openings, vertical lip means defining the lower margin of said rear opening and retaining a rear tailgate in covering psition with respect to the rear opening, a bucket loader including arm means pivotally mounted upon the. sides of said body for movement of the bucket between a load position adjacent the rear of the body and a discharge position overlying said top opening, and detachable means f r interconnecting said bucket loader and tailgate selectively as the bucket moves from the load toward the discharge position to lift the tailgate vertically clear of said lip and to pivot the tailgate to an open position in sequence.

t. in combination with a refuse collection vehicle to which is fixed an elongated hollow body of low silhouette having rear and top openings, vertical lip means defining the lower margin of said rear opening and retaining a rear tailgate in covering position with respect to the rear opening, plural releasable dogs interconnecting the sides of said body and tailgate to help retain the same in said covering position, hinge means mounting said tailgate upon said body for pivotal and for limited vertical movement with respect to said rear opening, a bucket loader including arm means pivotally mounted upon the sides of said body for movement of the bucket been a load position adjacent the rear of the body and a discharge position overlying said top opening, detachable means for interconnecting said bucket loader and tailgate selectively as the bucket moves from the load toward the discharge position to lift the tailgate vertically clear of said lip and to pivot the tailgate to an open position in sequence, said bucket being pivotally mounted upon said arm means and carrying releasable latch means 'for fixing the bucket against pivotal movement with respect to the arm means, and snubber line means of preselected length interconnecting said latch and body to release the latch allowing the bucket to pivot and dump when the bucket overlies said top opening.

5. In combination with a vehicle to which is fixed an elongated hollow nondump body having rear and top openings, packer means movable longitudinally within said hollow body between a retracted position adjacent the front of the body and a discharge position adjacent the back of the body selectively to pack material carried within the body and to expel material through said rear opening, vertical lip means defining the lower margin of said rear opening and retaining a rear tailgate in covering position with respect to the rear opening, a bucket loader including arm.means pivotally mounted upon the sides of said body for movement of the bucket between a load position adjacent the rear of the body and a discharge position overlying said top opening, detachable means for interconnecting said bucket loader and tailgate selectively as the bucket moves from the load toward the discharge position to lift the tailgate vertically clear of said lip and to pivot the tailgate to an open position in sequence, and hydraulic control means selectively but not simultaneously for actuating said bucket loader and said packer.

6. In combination with a vehicle to which is fixed an elongated hollow body having rear and top openings, hydraulically actuated packer means movable longitudinally within said hollow body between a retracted position adjacent the front of the body and a discharge position adjacent the back of the body selectively to pack material carried within the body and to expel material through said rear opening, vertical lip means defining the lower margin of said rear opening and retaining a rear tailgate in covering position with respect to the rear opening, hinge means mounting said tailgate upon said body for pivotal and for limited verticalmovement with respect to said rear opening, a hydraulically actuated bucket loader including arm means pivotally mounted upon the sides of said body for movement of the bucket between a load position adjacent the rear of the body and a discharge positionoverlying said top opening, detachable means for interconnectingsaid bucket loader and tailgate selectively as the bucket moves from the load toward the discharge position to lift the tailgate vertically clear of said lip and to pivot the tailgate to an open position in sequence, and hydraulic control means selectively but not simultaneously for actuating said bucket loader and said packer, said control means including a movable valve located without said body and controlling the flow of hydraulic fluid to said hydraulically actuated packer, said movable valve cooperating with mechanical means carried by the packer for moving the valve to a neutral position when the packer is fully retracted thereby also defining an indicium of the position of the packer.

7. In combination with a vehicle to which is fixed an elongated hollow nondump body having rear and top openings, packer means movable longitudinally within said hollow body between a retracted position adjacent the front of the body and a discharge position adjacent the back of the body selectively to packmaterial carried within the body and to expel material through said rear opening, vertical lip means defining the lower margin of said rear opening and retaining a rear tailgate in covering position with, respect to the rear opening, hinge means mounting said tailgate upon said body for pivotal and for limited vertical movement with respect to said rear opening, a bucket loader including arm means pivotally mounted upon the sides of said body for movement of the bucket between a load position adjacent the rear of the body and a discharge position overlying said top opening, detachable means for interconnecting said bucket loader and tailgate selectively as the bucket moves from the load toward the discharge position to lift the tailgate vertically clear of said lip and to pivot the tailgate to an open position in sequence, said bucket being pivotally mounted upon said arm means and carrying releasable latch means for fixing the bucket against pivotal movement with respect to the arm means, and snubber line means of preselected length interconnecting said latch and body to release the latch allowing the bucket to pivot and dump when the bucket overlies said top opening, and hydraulic control means selectively but not simultaneously for actuating said bucket loader and said packer.

8. As an article of manufacture, an attachment for a refuse vehicle, said vehicle having an elongated hollow body of low silhouette with parallel side walls and a flat floor, said attachment including a packer cart with an upstanding vertical framework mounted upon wheels for movement longitudinally over said flat floor, said attachment also including a first longitudinally movable motor means pivotally mounted upon the rear of said body, a second longitudinally movable motor means pivotally joined to said packer cart, and an elongated lever means pivotally mounted upon the floor of said body and inter connecting said first and second motors for movement of said packer cart upon simultaneous actuation of the motors, the length of said lever and the maximum longitudinal movement of said motors being correlated to move said packer cart the full length of said body when effecting an injection of material from the body.

9. A packer for a refuse vehicle, comprising an elongated nondump body having side walls and a fiat floor, a packer cart with an upstanding vertical framework mounted upon wheels for movement longitudinally of said body over said flat floor, a first expansible hydraulic motor pivotally mounted upon the rear of said body, a second expansible hydraulic motor pivotally joined to said packer cart, an elongated lever means pivotally mounted upon the floor of said body and joined at opposite ends to said first and second motors, and hydraulic actuation means for simultaneously extending or retracting said hydraulic motors thereby pivoting said lever and extending or retracting said packer cart.

10. A packer for a refuse vehicle, comprising an elongated body having side walls and a fiat floor, a packer cart with an upstanding vertical framework mounted upon wheels for movement longitudinally of said body over said fiat floor, said cart and side walls carrying cooperating guide means for restricting ment, a first expansible hydraulic motor pivotally mounted upon the rear of said body, a second expansible hydraulic motor pivotally joined to said packer cart, and an elongated lever means pivotally mounted upon the floor of said body and joined at opposite ends to said first and second motors for movementof said packer cart, the length of said lever and the maximum stroke of said motors being correlated tomove said packer cart the full length of said body.

ll. A packer for a refuse vehicle, comprisingv an elongated nondump body having side walls and a fiat floor, a packer cart with an upstanding vertical framework mounted upon wheels for movement longitudinally of said body over said flat floor, said cartand side walls carrying cooperating wheels which ride upon the side walls of said body and guide means for restricting the cart to straight line movement, said guide means including channel guides mounted adjacent the floor on each side wall and mated friction slides projecting with the guides from adjacent the lower side portions of the cart, a first expansible hydraulic motor pivotally mounted upon the rear of said body, a second expansible hydraulicmotor pivotally joined to said packer cart, an elongated lever means pivotally mounted upon the floor of said body and joined at opposite ends to said first and second motors, and hydraulic actuation means for simultaneously extending or retracting said hydraulic motors thereby pivoting said lever and extending or retracting said packer cart, said hydraulic actuation means including a three-position valve located Without said body, said valve cooperating with means projecting from said packer cart to move the valve to a neutral position when the packer cart is fully retracted thereby also defining an indicium of the position of the packer.

12. A refuse vehicle, comprising an elongated body having side walls and a flat floor, a packer cart with an upstanding vertical framework mounted upon wheels for movement longitudinally of said body over said flat floor, a first expansible hydraulic motor pivotally mounted upon the rear of said body, a second expansible hydraulic motor pivotally joined to said packer cart, an elongated lever means pivotally mounted upon the floor of said body and joined at opposite ends to said first and second motors for movement of said packer cart, a hydraulically actuated bucket loader including arm means pivotally mounted upon the sides of said body for movement of the bucket between a load position adjacent the rear of the body and a discharge position, and hydraulic control means selectively but not simultaneously for actuating said bucket v loader and said packer.

13. A refuse vehicle, comprising an elongated nondump body having side walls and a fiat floor, a packer cart with an upstanding vertical framework mounted upon wheels for movement longitudinally of said body over said fiat floor, said cart and side walls carrying cooperating guide means for restricting the cart to straight line movement, said guide means including channel guides mounted adjacent the floor on each side wall and mated friction slides projecting with the guides from adjacent the lower side portions of the cart, a first expansible hydraulic motor pivotally mounted upon the rear of said body, a second exp ansible hydraulic motor pivot-ally joined to said packer cart, an elongated lever means pivotally mounted upon the floor of said body and joined at opposite ends to said first and second motors, hydraulic actuation means for simultaneously extending or retracting said hydraulic motors thereby pivoting said lever and extending or retracting said packer cart, the length of said lever and the maximum stroke of said motors being correlated to move said packer cart the full length of said body, a hydraulically actuated bucket loader including arm means pivotally mounted upon the sides of said body for movement of the bucket between a load position adjacent the rear of the body and a discharge position, and hydraulic control the cartto straight line move means selectively but not simultaneously for actuating said bucket loader and said packer.

14. A refuse vehicle, comprising an elongated body havingside walls and a fiat floor, a packer cart with an upstanding vertical framework mounted upon wheels for movement longitudinally of said body over said flat floor, a first expansible hydraulic motor pivotally mounted upon the rear of said body, a second expansible hydraulic motor pivotally joined to said packer cart, an elongated lever means pivotally mounted upon the floor of said body and joined at opposite ends to said first and second motors for movement of said packer cart, ahydraulically actuated bucket loader including arm means pivotally mounted upon the sides of said body for movement of thebucket between a load position adjacent the rear of the body and a, discharge position, detachable means for interconnecting said bucket loader and tailgate selectively as the bucket moves from the load toward the discharge position to lift the tailgate vertically clear of said lip and to pivot thetailgate to an open position in sequence, said bucket being pivotally mounted upon said arm means and carrying releasable'l-atch means for fixing the bucket against pivotal movement with respect to the arm means, and snubber line means of preselected length interconnecting said latch and body to release the latch allowing the bucket to pivot packer is fully retracted thereby also defining an ,indicium of. theposition of the packer.

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