US2816502A - Mobile baling press - Google Patents

Description

Dec. 17, 1957 w. EISMANN 2,816,502

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MOBILE BALING PRESS Filed Nov. 5, 1952 v 3 Sheets-Sheet 3 WILLIAM E MfiNN INVENTORQ 1 United States Patent U MOBILE BALING PRESS William Eismann, Pittsburgh, Pa. Application November 5, 1952, Serial No. 318,866

Claims. (Cl. 100100) This invention relates generally to presses and more particularly to mobile presses for baling scrap metal of various types.

The term scrap metal includes iron and steel of a great variety of shapes and sizes among which are used containers for oil, beer, etc., channel sections of all shapes, parts of autos, and almost any used item of iron or steel. This scrap, which has a fluctuating but substantial resale value is collected by scrap dealers who sell it to junk yards which store it awaiting a favorable price.

The scrap, before baling, is bulky and not having the storage or baling facilities of the junk yard, the scrap dealer is forced to accept whatever price the junk yard will pay him as soon as he collects a load. The operator of a junk yard also has the problem, though somewhat lesser, of adequate storage space and of the acquisition of expensive baling equipment.

Various types of portable presses are known in the art and as a whole, these are characterized by certain disadvantages making them undesirable for the use intended. Among these disadvantages are an unnecessary size and cost for the size scrap to be baled, a lack of facility or use in that the same must be lifted on and ofi truck beds or trailer vehicles; a difliculty of readily providing operating power for the presses thus requiring that they be parked or placed near power sources and limiting their usefulness; and a poor design resulting in excessive operating and maintenance costs.

Accordingly, the chief object of the present invention is to obviate the above mentioned disadvantages characterizing known prior art structures.

Another important object of the present invention is to provide a mobile press for baling scrap metal which may be readily driven to the site of available scrap to compress it into bales.

A further important object of the invention is to provide a combination truck and scrap metal baling press which is susceptible of economical and ready manufacture and of long life in use.

A still further important object of the invention is to provide a truck including a built-in baling press for scrap metal which is operated by the motive power of the truck and which overcomes the problem of jammed bales in the press box.

Another object of the invention is to provide a mobile baling press including a press chamber having elements operable to assist in the baling action and in the ejection of bales therefrom.

Other objects and advantages of the invention will become apparent during the course of the following description.

In the drawings I have shown several embodiments of the invention. In these showings:

Figure 1 is a side elevational view of one-form of the mobile baling press comprising the present invention;

Figure 2 is a top plan view thereof;

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Figure 3 is a rear elevational view thereof, parts being broken away;

Figure 4 is a fragmentary central vertical longitudinal sectional view thereof to an enlarged scale;

Figure 5 is a transverse vertical sectional view thereof to a further enlarged scale taken on the line 5-5 of Figure 4;

Figure 6 is a fragmentary top plan view of a modified form of the invention;

Figure 7 is a fragmentary central vertical longitudinal sectional view thereof;

Figure 8 is a similar view of a further modified form of the invention; and

Figure 9 is a rear elevational view thereof.

Referring to the drawings, numeral 10 designates a truck having wheels 14 mounted on its chassis 15 which comprises laterally connected longitudinally extending frame members 16. A pair of sub frame members 17 are coextensive with and fixed to the frame members 16 and serve to elevate and support a heavy steel truck bed plate 18 which overhangs the chassis 15 at its sides and rear.

The press box which is indicated as a whole as 19, is of heavy gauge sheet steel, rectangular in shape and substantially equally spaced inwardly from the side and rear edges of the bed plate 18 to define a cat walk 20 therewith. The press box 19 comprises a rear wall 24, spaced parallel sidewalls 25 rigidly connected to the rear wall 24 and at their front ends to an inverted U-shaped stanchion 26, all of which are fixed to the bed plate 18 by means of out turned flanges as by welding.

The press chamber or box defined by the side and end walls together with the included portion of the bed plate 18, is closed at its front end by a ram 27 and at its top by a charging or loading door 28 pivoted to the stanchion 26 at 29. As seen in Figures 1, 2 and 4, the rear portion 31 of the press box floor (the bed plate 18) between the rear wall 24 and the dotted line 30 is mounted for vertical movement upon a hydraulic jack assembly 34 which is fixed to the chassis 15 by brackets 33 for a purpose to be described. I

The ram 27 is fixed to the end of a piston rod 35 projecting from a double acting hydraulic cylinder and piston assembly 36 which is operatively mounted at the front of the bed plate 18. The pivoted loading door 28 of the press chamber acts as a second ram and is connected by a piston rod 37 to a double acting cylinder and piston assembly 38 which is pivotally mounted centrally of the stanchion 26 as at 39. The stanchion 26 is suitably braced as at 40 in order to withstand the reaction forces of the baling pressure applied by the door 28.

The outer surface of the loading door 28 is provided with a pair of spaced parallel longitudinally extending angle members 44 having lower outturned flanges by which they are fixed to the door 28 and inturned flanges 45 comprising confining rails or tracks for a pair of rollers 46 mounted on an axle 47 fixed to the lower end of the piston rod 37. The angles 44 are closed at their ends so that the rollers engage the rear ends when the loading door 28 is closed and the front ends (toward-the cab of the truck) when the loading door is swung open along the indicated dotted line of Figure 1. It will be noted that the lateral edges of the door are provided with down turned flanges 49 which engage and brace the side walls 25 of the press box during the baling operations.

The bed plate 18 terminates short of the truck cab and adjacent this end, a hydraulic pump 50 and reservoir 51 are mounted on either side of the cylinder 36. Power is furnished to the pump 50 from the power take-oflf 52 of the truck 10 by means of a conventional belt and pulley a drive 53. Suitable fluid conduits (not shown) connect the pump 50 and reservoir 51 with the hydraulic cylinders 34, 36 and 38. Suitable hydraulic controls (not shown) are also provided for directing the pressure fluid to and from the cylinders in proper sequence as will be described. An unloading skid conveyor frame 54 including a plurality of spaced idler rollers 55 is mounted on the rear of the bed plate 18 and extends upwardly to the upper edge of the rear wall 24 of the press box.

In the operation of the form of the invention shown in Figures 1-5 inclusive, the loading door 28 is swung to open position by fully retracting the piston rod 37. It will be noted that the rollers 46 move to and engage the forward or left end (Figure l) of the angle members 44 before the door 28 starts to open. With the ram 27 fully retracted, miscellaneous scrap metal is now loaded into the press chamber until the operator judges that the correct amount is present for the weight and size of bale to be formed.

By way of illustration, a press chamber whose dimensions are roughly 37 x 64 x 12" in height can produce a 100-150 lb. bale whose dimensions will be approximately 12" x 32 x 12". The scrap forming such a bale may readily include damaged oil drum-s up to 55 gallon capacity which drums are a common part of scrap metals to be salvaged.

When the scrap metal comprises bulky material such as metal containers, etc., the scrap may well project above the side walls of the press box. However, this is forced into the press chamber when fluid pressure to cylinder 38 forcibly closes the loading door 28. It will be noted that as the door 28 closes, the rollers are at the left end of the angles 44 until the door either closes or engages scrap due to the sliding and rolling connection of the piston rod 37 therewith. Upon such engagement by the door, the rollers move to the rear ends of the angles so that the moment arm about the pivot 29 is increased to increase the compressive force of the closing door 28.

When the door 28 has been closed, fluid pressure is admitted to the cylinder 36 to force the ram 27 rearwardly to its maximum extended position as indicated by the dotted line 30. At this time, the scrap has been compressed into a bale resting on the vertically movable floor portion 31. The ram 27 is now fully retracted and the loading door 28 is opened. It will be noted that the floor 31 in its lowermost position (Figure 4) is below the level of the bed plate 18 forming the bottom of the press chamber so as to eliminate any possibility of its being struck by the ram 27.

The formed bale extend-s slightly after compression and wedges or jams itself in the press box. As the loading door 28 opens, fluid pressure is admitted to the cylinder 34 to forcibly raise the floor 31 supporting the formed bale to a position adjacent the top edges of the walls of the press chamber. The bale is now manually tipped rearwardly by the operator onto the roller conveyor 55 and deposited on the ground or a belt conveyor, etc. The press chamber is ready for reloading upon return of the bale supporting and ejecting floor 31. Inasmuch as compressed metal scrap bales retain their shape due to the interlocking of the scrap, no straps or ties are necessary.

The form of the invention shown in Figures 6 and 7 is generally the same but differs from that shown in Figures 1-5 in that the floor portion 31 is hinged to the bed plate 18 at 56 and includes a depending bracket 57 to which the piston rod of the hydraulic cylinder 34 is pivotally connected, the cylinder being mounted on the bed plate 18 for action in a horizontal plane rather than vertical.

Moreover, the side walls 25 are fixed only to the stanchion 26 and at their rear ends include inturned flanges 58 to which brackets 59 are fixed. A cylinder and piston assembly 60 is operatively mounted between the brackets 59 and acts to spread the press box sides 25 when fluid pressure is admitted to the cylinder 60, The roller conveyor 55 is omitted as the floor portion 31 is swung downwardly by the cylinder 34 to permit the formed bale to r p th g th e p a e'l ont the gr und, etc.

As stated, a scrap metal bale tends to expand slightly immediately upon cessation of the compressive force exerted by the ram which causes it to stick within the press box. By flexing the heavy gauge sidewalks an inch or so about the stanchion as a pivot by means of the cylinder 60, the formed bale drops freely out of the press box. It will be noted that the flange 59, the cylinder assembly 60 and the inherent rigidity of the side walls 25 prevents accidental outward motion of the sides during the pressing of scrap into a bale.

The cycle of operation of the form of the invention disclosed in Figures 6 and 7 is believed to be apparent. The press box 19 is charged with scrap and the cover 28 closed. The ram 27 is extended to the position shown in dotted lines in Figure 7 to form the bale whereupon the opening of the loading door 28, the retraction of the ram 27 and the downward swinging of the door 31 is substantially simultaneously effected. The press box sides are then flexed slightly outwardly by means of the cylinder 60 permitting the jammed bale to drop freely through the bed plate 18 forming the press bottom onto the ground, etc.

In the form of the invention shown in Figures 8 and 9, the general principles of the press box 19 are again the same. However, the moving floor portion 31 is eliminated, the sides 25 are fixed to the bed plate 13 and the rear wall 24 is pivotally mounted to the bed plate at 61. The ram 27 has its stroke increased so as to be equal to the length of the press box as shown in dotted lines (Figure 8) so that upon formation of the bale, the rear press box wall 24 is swung rearwardly and downwardly by the cylinder 34 which is pivotally connected to its bracket 62. The bale is then ejected by the ram 27.

It is now believed to be readily apparent that the invention comprises a simple, economically built mobile press for baling scrap metals in which the bed plate of the truck is also utilized as the bottom of the press box, in which ejecting or other means are provided to overcome the sticking tendency of the formed bale, and in which a minimum number of parts are needed to form a maximum size scrap bale.

It is to be understood that the forms of the invention herewith shown and described are to be taken as preferred examples of the same and that various changes in the shape, size and arrangement of parts may be resorted to without departure from the spirit of the invention or the scope of the subjoined claims.

I claim:

1. A mobile baling press for scrap metal comprising a motor vehicle including a chassis, a bed plate mounted on said chassis, a press box including a pivoted top closure, ,side and end walls mounted on said bed plate and including a portion of it as its bottom, and a ram movable in said press box and along said bed plate as a bottom to compress material in said box, the side and rear edges of said closure terminating in depending flanges to engage and reinforce said side and end walls when in closed position.

2. A mobile baling press for scrap metal comprising a motor vehicle including a chassis, a bed plate mounted on said chassis, a press box including a pivoted top closure, side and end walls mounted on said bed plate and including a portion of it as its bottom, and a ram movable in said press box and along said bed plate as a bottom to compress material in said box, said top wall being adapted to compress material in said box during r top closure, side and end walls mounted on said bed plate and including a portion of it as its bottom, and a ram movable in said press box and along said bed plate as a bottom to compress material in said box, said end Wall being pivotable outwardly to a horizontal position to enable compressed material to be ejected thereover by said ram, the side and rear edges of said closure terminating in depending flanges to engage and reinforce said side and end walls when in closed position.

4. A mobile baling press for scrap metal comprising a motor vehicle including a chassis, a bed plate mounted on said chassis, a press box including a pivoted top closure, side and end walls mounted on said bed plate and including a portion of it as its bottom, a ram movable in said press box and along said bed plate as a bottom to compress material in said box, and means cooperating with said press box for overcoming the jamming of the compressed material within said box upon completion of the bale, the side and rear edges of said closure terminating in depending flanges to engage and reinforce said side and end walls when in closed position.

5. A truck mounted baling press for scrap metal having the bed plate of the truck as the bottom of the press box comprising an end and sidewalls fixed to said bed plate and having a pivoted loading cover closure mounted thereon to form an open ended press box, and a ram closing the open end and being slidably mounted in said box to compress material therein into a bale, said portion of the bed plate forming the press box floor including means for ejecting the bale from said press box, the side and rear edges of said closure terminating in depending flanges to engage and reinforce said side and end walls when in closed position.

6. A truck mounted baling press for scrap metal having the bed plate of the truck as the bottom of the press box comprising an end and sidewalls fixed to said bed plate and having a pivoted loading cover closure mounted thereon to form an open ended press box, and a ram closing the open end and being slidably mounted in said box to compress material therein into a bale, said portion of the bed plate forming the press box floor including means for lifting the bale out of the press box, the side and rear edges of said closure terminating in depending flanges to engage and reinforce said side and end walls when in closed position.

7. A truck mounted baling press for scrap metal having the bed plate of the truck as the bottom of the press box comprising an end and side walls rigidly fixed to said bed plate and having a pivoted loading cover closure mounted thereon to form an open ended press box, and a ram closing the open end and being slidably mounted in said box to compress material therein into a bale, said portion of the bed plate forming the press box floor ineluding means for dropping the bale out of the press box upon completion of the bale, the side and rear edges of said closure terminating in depending flanges to engage and reinforce said side and end walls when in closed position.

8. A truck mounted baling press for scrap metal having the bed plate of the truck as the bottom of the press box comprising an end and side walls rigidly fixed to said bed plate and having a pivoted loading cover closure mounted thereon to form an open ended press box, a ram closing the open end and being slidably mounted in said box to compress material therein into a bale, said portion of the bed plate forming the press box floor including means for dropping the bale out of the press box upon completion of the bale and additional means mounted on said box for flexing said side walls outwardly to permit said bale to fall freely through said first mentioned means, the side and rear edges of said closure terminating in depending flanges to engage and reinforce said side and end walls when in closed position.

9. A truck mounted baling press for scrap metal having the bed plate of the truck as the bottom of the press box comprising an end and side walls fixed to said bed plate and having a pivoted loading cover closure mounted thereon to form an open ended press box, and a ram closing the open end and being slidably mounted in said box to compress material therein into a bale, said end wall being pivotable outwardly to a horizontal position to permit ejection of said bale thereover, the side and rear edges of said closure terminating in depending flanges to engage and reinforce said side and end walls when in closed position.

10. An apparatus as recited in claim 8 wherein said side walls are fixed to said bed plate only at their forward ends, and said additional means comprises power means mounted on and connecting the rear ends of said side walls.

References Cited in the file of this patent UNITED STATES PATENTS 192,300 Smith June 19, 1877 225,773 Watts Mar. 23, 1880 261,855 Kitchens Aug. 1, 1882 333,059 Curry Dec. 22, 1885 773,325 Huscher Oct. 25, 1904 1,182,369 Haniquet May 9, 1916 1,812,797 Lindemann June 30, 1931 2,353,221 Clifton et al. July 11, 1944 2,360,487 Fullerton Oct. 17, 1944 2,605,657 Lindemann et a1. Aug. 5, 1952 2,613,590 Graybill Oct. 14, 1952

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