US2592085A - Refuse vehicle - Google Patents

Description

April 8, 1952 H. J. VAN DOORNE REFUSE VEHICLE '3 Sheets-Sheet 1 Filed Aug. 14, 1948 IJI) 7 April 8, 1952 VAN DOORNE 2,592,085

REFUSE VEHICLE 3 Sheets-Sheet 2 Filed Aug. 14, 1948 FIG.3

/ III-I;

. INVENTOR.

'HUBERTUS JOSEPHUS l/4N DOORNE 'Ajg'ril s; 1952 H. .1. VAN DOORNE 2,592,085

REFUSE VEHICLE Filed Aug. 14, 1,948 3 Sheets-Sheet 3 INVENTOR. HUBERTUS JOSEPHUS IAN DOORNE Patented Apr. 8, 1952 OFFICE REFUSE VEHICLE Hubertus Josephus van Doorne, Deurne, Netherlands Application August 14, 1948, Serial No. 44,312 In the Netherlands August 19, 1947 11 Claims.

This invention relates to a refuse vehicle of the type in which dust bins, ash, garbage or the like cans or are automatically emptied. This type is generally provided with a hydraulic device for lifting and tilting the dust bins.

The invention has for its object to provide a mechanical device for emptying the bins thus avoiding the drawbacks of hydraulic apparatus.

A further object of the invention is to provide a refuse vehicle comprising means for compressing the refuse in a hopper, said means, however, not being of the screw type, which requires considerable power and evidences considerable wear and tear at low efiiciency.

Another object of the invention is to provide apparatus for readily and automatically emptying dust bins.

In the drawing:

Figure 1 is a side elevation seen from the right of the rear part of an embodiment of the vehicle according to the invention;

. Figure 2 is a side elevation seen from the left of the hopper shown in Figure 1 with a device for lifting and tilting dust bins the lifted and tilted bin position being shown in dotted lines;

Figure 3 is a rear view of a vehicle according to Figure 1 with two devices for lifting and tilting dust bins;

Figure 4 is a side elevation seen from the left on a larger scale of a device for engaging and disengaging the driving gear of a bin holder;

Figure 5 is a horizontal section of a detail in Figure 4 along the line V-V on still arlarger scale;

Figure 6 is a side elevation of a part of the driving mechanism behind the side wall shown in Figure 1;

Figure '7 is a section taken along line VIIVII in Figure 6. v a I The vehicle comprises a receptacle I, the rear wall of which is formed by a receiving hopper 2. Although as shown in Figure 3 the hopper and the device for lifting and tilting dust bin are of the duplex type, in the following descriptiongenerally a single hopper and a single device cooperating therewith will be described.

The wall of the hopper 2 is shaped as part of a cylinderand fits below to the bottom of'the receptacle I, whereas the upper edge 2a of the hopper is at a somewhat higher level than the horizontal plane through the cylinder axis.

A horizontal shaft 3 is rotatably mounted'in the hopper. A pressure plate 4 is secured to said, shaft. The hopper communicates with the receptacle I by means of an aperture 5.

The engine for driving the vehicle (not shown) drives a shaft 6, which by means of a universal joint I drives a bevel pinion 8. This pinion is in mesh with a bevel wheel 9 on a shaft I0 carrying a small tooth wheel II. This wheel is in mesh with a larger gear I2 (see also Figure 6), which drives a chain wheel I3. An endless chain I5 is mounted on chain wheels I3 and I4. The outer and the inner run of said chain are guided on part circular tracks I6 and H.

An arm I8 is secured to the shaft 3 of the pressure plate 4. Said arm I8 is provided with a slot I9 in which a sliding member 20 can be displaced. Said member 20 is connected to the chain I5 (see Figure 7). Consequently if the chain wheel I3 is driven in the direction of the arrow the member 20 follows the inner run along the track ll. Then arm I8 is raised and via shaft 3 the pressure plate 4 is moved. When the member 20 passes the upper chain wheel I4, it is shifted in the slot IS in the direction of the shaft and subsequently it follows the outer run of the chain along the track I6, such that the arm I8 rotates the shaft 3 in opposite direction and the pressure plate 4 is lowered.

A rocking member 2| can swing about shaft 3. This member is provided with an aperture 22 (see Figure 3). By means of a shaft 23 a bin holder 24 adapted to support a bin 25 is pivotally mounted with respect to the rocking member 2|. An arm 26 (see Figure 2) is secured to the shaft 23 and connected with a push rod 21 pivoted at 28 to the side wall of the hopper 2.

When the pressure plate 4 is raised, the rock-- ing member 2| is also raised. The pivot shaft 23 then moves along a circular path A of which shaft 3 is the center. Due to the fact that the connection point 29 between the arm 26 and the push rod 21 moves along another circular path B having its center at 28, upon raising the rocking member 2| the bin holder 24 is tilted to a position shown in dotted lines in Figure 2. The. aperture 22 in the.rocking member 2| is so wide that the lid 30 opens by rotation about pivot 3I' and assumes a suspended position 30a as shown in Figure 2. Thus the bin is emptied in the hopper 2 through the aperture 32 situated over the edge 2a. When the pressure plate 4 is again lowered, the rocking member 2| is also lowered and the bin holder 24 with the bin 25 reassumes the position according to figure 1 due to the fact that the rocking member 2| comes to rest on the rim 2a. The pressure plate 4 continues its downward movement so that the refuse discharged in the hopper is driven through the opening 5 in the receptacle I by means of the pressure plate 4 and when said receptacle has been practically filled, the refuse is thereby also compressed.

In the duplex type accordin to Figure 3 a bevel wheel 9 is mounted between two shafts [0. At both sides of the bevel wheel 9 a friction coupling 33, 34 respectively has been provided. These couplings can be disengaged by actuating levers so that the corresponding tooth wheels I l are driven.

A control handle 33 having a rearward extension 33a can be swung about a pivot 40 which is carried by the forked end 55 of a shaft 56 journalled in a box-shaped projection 21) of the hopper casing 2. An arm 51 is fixed on the shaft 56 by means of a pin 58. The free end of said arm 51 is connected with the corresponding coupling 33 (or 34) by means of a rod 59. In order to engage the drive of the arm 18, the handle 39 is pulled down thus raising the free end of the arm 5'! and the coupling is engaged against the action of a spring (not shown) which tends to maintain the coupling disengaged. Since such type of spring-loaded couplings are generally known andv this type of coupling is not-a feature of the invention, it is not illustrated in the drawing. After pulling the handle 39 down, it is swung laterally a little so that the extension 39a engages a shoulder 42 of one of the legs of a fork-shaped guide 41 which is fixed to the side of the box 217. In this way the handle is prevented from being raised by the (non-illustrated) spring of the coupling 33 (or 34) which urges the free end of the arm 51 in a downward sense. Thus the coupling rests engaged.

The driving arm i8 is provided with a cam 35 which is mounted on a pivot 35a in such a way, that when the arm I8 is moving downwards, said cam is pushed back by coming into contact with a stop 36 fixed on a rod 31 (of square or other non-round section) which is slidable, but not rotatable in the box 21). If, however, the arm l8 moves upwards, a bevel on the cam 35 pushes the stop 36 aside, thus sliding the rod 31 against the action of a spring 38 which returns the rod 31 to its original position as soon as the cam 35 has passed the stop 35.

If a bin 25 is placed in the bin holder 24, a stud 43 fixed to the bin opposite to the hinge 3| of the lid 33, is engaged by a hook 24a of the bin holder. At the same time said stud 43 urges a rod 44 down against the action of a spring 45 so that a lever 46 is lowered. This lever is connected by a link 60 with a sliding member 4i which is urged in upward direction by a spring GI and which is slidabl'e in the forked guide 41. The upper end of. the sliding member 4i is adapted to move not only up and down but also in lateral direction between the legs of the forked guide 4?. The downward movement of the lever 46 thus pulls the sliding member 4| down and in its lowermost position the upper end of said sliding member is lower than the underside of the rearward extension 39a of the handle 33 as shown in Figure 4. If in this position the rod 3? is slid gainst the action of its spring 38 by the bevel face of the cam 35, the end of said rod 3'. will project, above the upper end of sliding member 4!, between the legs of the forked guide 41, but not far enough to come into contact with the rearward extension 39a of handle 39. Consequently said extension is not moved out of engagement with the shoulder 42 of guide 41 and the coupling 33 (or 34) in the drive of the chain t5 (and thusof the arm [3) rests engaged.

If a bin is removed from the bin holder 24, the

rod 44 is no longer pressed down and the sliding member 4| is allowed to be raised by the action of its spring 6|, so that in the raised position of the sliding member its upper part projects between the slidable rod 31 and the rearward extension 39a of the handle 39. 'As has been mentioned above, the arm (8 is reciprocated as long as the drive of the chain It; is engaged. If during the upward movement of the arm l8 the sliding rod 3! is shifted by the contact between the cam 35 on said arm [8 and the stop 36 on said rod 31, the end of this rod 37 abuts against the upper part of the sliding member 4!, so that this part is pressed laterally against the extension 33a, forcing this extension out of engagement with the shoulder 42 on guide 4?. This results in the handle 39 being free to swing with its shaft 55 and the arm 5! fixed thereon, so that these parts no longer keep the coupling 33 (or 34) engaged and allow its sprin to act, thereby disengaging said coupling and stopping the drive of the corresponding chain [5.

In order to re-engage the drive after placing a new bin in the bin holder 24, the handle 39 is pulled down again and swung laterally to lock it by the shoulder 42. If it is desired to disengage the drive, the handle 33 is swung laterally so that its rearward extension 39a is freed from the shoulder 42 and is no longer locked thereon.

A cam disk 48 (see Figure 2) comprising two cams is secured to the shaft of the upper chain wheel I4. An arm 49 of a bell crank lever 50 lies against said cam disk. The other arm of said lever 50 is provided with a surface 5| which cooperates in the upper and tilted position of the bin holder 24 with a roller 52 of an arm 53 secured to the shaft 23. Upon rotation of cam disk 48 the lever 50 is jerkingly moved so that also to arm 53 and thus to bin holder 24 a jerking movement is imparted. This is possible, because the push rod 21 comprises two mutually shiftable parts urged apart by a spring 54. Hence during the jerking movement the spring 54 is periodically slightly compressed. By this jerking movement emptying the bin 25 is facilitated.

The device works in a dust free manner because the bin 25 practically closes the opening 22 in the rocking member and the latter member in its upper position i. e. the emptying position of the bin forms a seal for the discharge opening 32.

During the lowering movement of the rocking member 2| the pressure plate 4 is also lowered so that the room for refuse inthe hopper 2 is sealed from the atmosphere by the pressure plate 4. I

Having now described the nature of my invention and the objects thereof, what I claim is:

1. A refuse vehicle provided with a receptacle, a receiving hopper connected to said receptacle, 2. device for lifting and tilting dust bins placed on said device and a device for compressing the refuse into said receptacle, said lifting device comprising a horizontal shaft mounted in said receiving hopper and adapted to be oscillated, a pressure plate for compressing the refuse fixedly connected to said horizontal shaft, a driving means for operating said pressure plate, a rocking member adapted to be swung upwardly about said shaft and to be picked up by and lifting during part of the upward movement of said pressure plate, a bin holder adapted to receive a dust bin and pivotably connected to said rocking memher by means of a pivot shaft, an arm on said pivot shaft, and a link connected with the free end of said arm and adapted to swing on a pivot mounted on the receiving hopper, the axes of said horizontal pivot shaft and of said link pivot on said hopper being fixed and non-coincident so that the tilting movement of the bin holder is greater than that of the rocking member.

2. A refuse vehicle according to claim 1, comprising an arm mounted on said horizontal shaft for reciprocating the pressure plate, a sliding member, an endless chain secured to said sliding member, chain Wheels for said chain, one of said wheels being positively driven by said driving means, said sliding member upon passing a chain wheel being shuttled from one run of the chain to the other.

3. A refuse vehicle according to claim 1, comprising means for automatically disengaging the means for driving the bin holder when the latter has returned in its lowermost position and the bin has been removed, a cam mounted to the drive arm of the pressure plate and a movable abutment arranged in the path of movement of said cam, said abutment upon contact with said cam automatically disengaging a coupling in the driving means.

4. A refuse vehicle according to claim 1, comprising a device for imparting a repeated jerking movement to the bin holder in tilted position, a part of said holder in this position being supported against a surface of a lever to which by means of a cam disc a jerking movement is imparted.

5. A refuse vehicle according to claim 1, said rocking member being so sized that in its uppermost position it substantially covers the discharge opening of the hopper, the rocking member being provided with an aperture adapted to the size of the dust bins such that the aperture is practically closed by said bin.

6. In a refuse vehicle having a receptacle, a dust bin mechanism comprising: a semi-cylindrical hopper at one end of said receptacle and communicating therewith through an aperture along one radial side of said hopper, a shaft along the axis of said hopper, a radially extending pressure plate on said shaft for sweeping through the space inside said hopperand closing said aperture, a rocking member pivoted on said shaft, a bin holder pivoted to said rocking member, an arcuate endless chain drive means to reciprocate said pressure plate and with it said rocking member thereby raising and lowering said bin holder pivoted on to said rocking member, and a link means pivoted to said hopper and connected to said bin holder to dump the bin in said holder into said hopper beneath said pressure plate towards the upper limit of movement of said pressure plate and said rocking member.

7. The mechanism of claim 6 including manual control means to start said drive means to lift and tilt said bin to dump it into said hopper.

8. The mechanism of claim 7 including cam means to disengage said drive means when the bin has been removed from said bin holder at the lower limit of movement of said rocking means.

9. A refuse vehicle provided with a receptacle, a device for lifting and tilting dust bins placed in said device for dumping the contents of said bins into said receptacle, said device comprising: a bin holder. a spring loaded member attached to said holder, a notched rotating cam, and a cam follower imparting oscillating movements from said cam against the action of said spring of said member when said device is in its tilted position, whereby a repeated jerking movement is imparted to said holder and bin to shake the contents from said bin into said receptacle.

10. The mechanism of claim 6 including means to jerk repeatedly the bin holder and bin at said upper limit of movement of said rocking member whereby the contents of the bin are shaken therefrom into said hopper.

11. The mechanism of claim 10 wherein said jerking means comprises a serrated cam driven by said drive means.

HUBERTUS JOSEPHUS v. DOORNE.

REFERENCES GITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,084,656 Rottee June 22, 1937 2,124,624 Leach et al July 26, 1938 2,252,608 Ballert Aug. 12, 1941 2,414,774 Spinks Jan. 21, 1947 2,417,696 Linde Mar. 18, 1947 2,456,434 Manthie Dec. 14, 1948 FOREIGN PATENTS Number Country Date 218,485 Great Britain July 10, 1924 279,715 Great Britain Nov. 3, 1927 742,812 France Jan. 4, 1933 45,030 Netherlands Feb. 15. 1939

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