US2961173A

US2961173A - Corrugated paper shredding machine

Info

Publication number: US2961173A
Application number: US703174A
Authority: US
Inventors: Wagnon Lyle; Ne D Streets
Original assignee: Individual
Current assignee: Individual
Priority date: 1957-12-16
Filing date: 1957-12-16
Publication date: 1960-11-22
Anticipated expiration: 1977-11-22

Description

Nov. 22, 1960 L. WAGNON CORRUGATED PAPER sumsnnmc MACHINE 2 Sheets-Sheet 1 Filed Dec. 16, 1957 INVENTOR. Ly/e H ag/m/Y- BY f? ,r ATTO K Nov. 22, 1960 L. WAGNON 2,

CORRUGATED PAPER suaaonmc MACHINE Filed Dec. 16, 1957 2 Sheets-Sheet 2 IN V EN TOR. Ly/e Way/70 United States Patent This invention relates to the shredding of corrugated paper and the like and has for its primary object the provision of a machine that is appreciably less costly than apparatus of its kind heretofore produced and placed in use and capable of handling a much larger volume of paper within a much shorter period of time than has 16 and bottom wall 18, all as best seen in Fig. 4 of the drawings. Additionally, the casing 10 is provided with a pair of end walls 20 and 22, the forwardmost edges 24 whereof slope downwardly and forwardly from wall 16 to wall 18.

An inlet opening 26 and an outlet opening 28 are provided in walls 14 and 12 respectively adjacent the bottom 18, and it is noted that the latter extends outwardly beyond the end walls 20 and 22 and therefore, through both

openings

26 and 28.

A shredder 30 within the casing 10 includes a horizontal shaft 32 extending through the walls 20 and 22 and journalled in bearings 34 disposed exteriorly of the casing 10 and carried by supporting blocks 36 which may serve the additional purpose of supporting the casing 10 if desired. Additionally, the shredder 38 includes 1 a plurality of blunt knives 38 radiating from the shaft heretofore been made possible through prior efforts along the same line.

It is the most important object of the present invention to attain the desired results above set forth by utilizing the principle of feeding the material substantially horizontally through the machine from an inlet at the front thereof to an outlet at the rear of the machine whereby the material is quickly and easily shredded within the casing of the machine without the necessity of prime movers having extremely high horsepower outputs.

Another important object is to provide an inexpensive, yet highly efficient machine by virtue of the fact that the same employs a novel bottom wall spanning the distance between the aforementioned inlet and outlet and sloping inwardly and downwardly from the inlet to present a loading panel along which the material slides toward the shredder and a discharge panel that slopes upwardly and outwardly toward the outlet, all substantially in conformity to, and concentric with the axis of rotation of the horizontal shredder.

Still another object of the present invention is to provide a shredding machine that employs a novel holding hook assembly co-operable with the shredder and disposed at the aforementioned bottom of the casing to sl.dably receive the material, feed the same upwardly into the path of travel of the knives of the shredder, and block the free passage of the material from the casing to the outlet because of the provision of upright lugs strategically disposed so as to retain the paper until the same has been sufficiently shredded as to pass between the hooks to the outlet.

Other objects include the way in which notches are formed in the hooks to retard any retrograde tendency of the paper, the manner in which the lugs of the hooks have leading edges substantially tangential to the axis of the shredder and separated by the notches from the inclined ramp edges of the hooks; and the way in which the hooks are staggered throughout the length of the holding hook assembly for more efficient over-all operation of the machine.

In the drawings:

Fig. l is an end view of a corrugated paper shredding machine made pursuant to my present invention.

Fig. 2 is a front elevational view thereof.

Fig. 3 is an enlarged, fragmentary, detailed, cross-sectional view taken on irregular line 33 of Fig. 2.

Fig. 4 is a transverse, cross-sectional view taken on line 4-4 of Fig. 2; and

Fig. 5 is a cross-sectional view taken on irregular line 55 of Fig. 1.

A casing broadly designated by the numeral 10 is provided with a rear wall 12, a front wall 14, a top wall 32 and offset relatively throughout the length thereof as best seen in Figs. 2 and 5. Knives 38 are releasably bolted in place between spaced fingers 40 integral with and radial to set collars 42 rigidly attached to the shaft 32 in spaced relationship therealong.

Bottom 18 is V-shaped as best seen in Figs. 3 and 4, presenting therefore, a fiat loading panel 44 spanning the distance between the

walls

26 and 22 and sloping downwardly and inwardly from the inlet 26 or more specifically, from the lowermost and forwardmost ends of edges 24. Bottom 18 is also provided with an inclined discharge panel 46 that slopes downwardly and inwardly from the outlet 28. The panels 44 and 46 merge therefore, along a straight line 48 that is horizontally disposed directly beneath the shaft 32 and, therefore, in parallelism therewith and within a common vertical plane with shaft 32.

A holding hook assembly 50 on the bottom wall 18 within casing 10 includes a plurality of hooks 52 spaced apart throughout the length of bottom 18 from wall 20 to Wall 22 and conforming to the shape of the bottom 18 at the line of merger 48 thereof so as to seat firmly on the upper faces of panels 44 and 46. Hooks 52 are rigidly held in place on the bottom 18 in any suitable manner (not shown) and each hook 52 has a ramp edge 54 that slopes upwardly and rearwardly from the panel 44 to the outlet 28.

Additionally, each hook 52 has an upstanding lug 56 that is in turn provided with an upright, forwardmost edge 58 facing the inlet 26 and disposed substantially perpendicularly to the panel 46. Accordingly, the edges 58 of all of the hooks 52 are likewise substantially tangentlal to the shaft 32. Each book 52 is further provided with an upwardly facing notch 68) between the ramp edge 54 and the upright edge 58 thereof. Finally, with respect to the assembly 50, it is to be noted that the hooks 52 assume three different positions along the length of the assembly 50, to the end that the distance between the lugs 56, as well as the edges 58 thereof and the outlet 28, vary.

Additional features of the machine include a guard rail 62 for the protection of operators feeding the material into the machine, rail 62 being disposed forwardly of the edges 24 and substantially at the same elevation as wall 16. Switch means 64 is conveniently located on one of the uprights 66 which support rail 62 and the same controls electric motors 68 and '70, the latter being operably connected with the shaft 32 as clearly illustrated in Figs. 2 and 5.

Motor 68 is carried by top wall 16 and drives a cutter 72 that may be employed to cut corrugated sheets to the correct dimensions for use as top and bottom pads in a bailing machine that is in turn used to bale the shredded material emanating from the machine forming the subject matter of the instant invention.

Such sheets may be fed to the cutter 72 along platform 74 through which cutter 72 extends, pressure rolls 76 being provided to hold the sheets against the platform 74; a i i It is seen from the foregoing that as the material is fed into the casing through inlet 26, it slides downwardly and forwardly along the panel 44 of bottom 18 and is thereupon directed upwardly and rearwardly by the ramp edges 54 of the hooks 52. Edges 54 therefore, serve the purpose of feeding the material into the paths of travel of the knives 38 inasmuch as the books 52 interleave with the knives 38 in the manner best illustrated by Figures 2 and 5. The rotating knives 38 of the shredder 30 moving clockwise as shown by the arrows in Fig. 4, force the material against the lugs 56 and particularly against the edges 58 thereof, thereby blocking free movement of the paper through the casing 10. Any tendency of the paper to buckle or otherwise move rearwardly or counter to the direction of rotation of the shredder 30 is impeded by the notches 60 into which the material tends to be directed by the force of the knives 38. As soon as the material is shredded sufiiciently by the knives 38 beating the same against the lugs 56 so as to clear the hooks 52, such shredded material will be forced through the outlet 28 along the inclined panel 46 and be forcibly discharged from the casing 10 by the action of the shredder 30.

It is to be noted that the entire machine operates Without the neessity of expensive conveyors, belts and other paraphernalia as has heretofore been deemed necessary in machines of this character. All of the features above set forth contribute to attainment of the basic desires and objects of the instant invention initially set forth hereinabove, namely, that of inexpensive cost of production and more eflicient and rapid shredding of the material.

Having thus described the invention what is claimed as new and desired to be secured by Letters Patent is:

l. A corrugated paper shredding machine comprising a hollow casing provided with a pair of end walls, a front wall, a rear wall and a bottom including a discharge panel, there being an inlet and an outlet in the front and rear walls respectively adjacent said bottom; a rotatable shredder in said casing having a horizontal shaft journaled in said end walls and a plurality of knives radiating from the shaft; and a plurality of hooksrigidly mounted on said bottom and projecting upwardly within the casing between the openings, said hooks each being provided with a ramp'edge for slideably receiving the paper as the same is fed into the casing through said inlet and feeding the same into the path of travel of said knives, said hooks being interleaved with said knives, the ramp edges thereof sloping upwardly from said bottom and toward said outlet, said hooks each having an upstanding lug between its ramp edge and the outlet for blocking free flow of the paper to said outlet, said lugs having upright edges facing the inlet, said edges being substantially perpendicular to the discharge panel.

2. A corrugated paper shredding machine as set forth in claim 1, said hooks having a notch formed therein between the ramp edges thereof and the upright edges of said upstanding 'lugs.

References Cited in the file of this patent UNITED STATES PATENTS 2,670,775 Elofson Mar. 2, 1954 2,706,088 Paul Apr. 12, 1955 2,828,923 Kramer Apr. 1, 1958 2,842,175 Thompson Jilly 8, 1958 2,865,416 Hetteen Dec. 23, 1958