US3745650A

US3745650A - Drum deheading device

Info

Publication number: US3745650A
Application number: US00137526A
Authority: US
Inventors: L Derwin
Original assignee: Individual
Current assignee: Individual
Priority date: 1971-04-26
Filing date: 1971-04-26
Publication date: 1973-07-17
Anticipated expiration: 1990-07-17

Abstract

A device for cutting out an end wall of a container comprising a cutting blade mounted on a support which clamps to the container, and a handle pivoted to the body and connected by linkage for reciprocating the blade upwardly and downwardly to cut through the container wall.

Description

United States Patent 1 Derwin July 17, 1973 [54] DRUM DEHEADING DEVICE 2,898,675 8/1959 Sheehy 30/16 Dl67,25l 7 1952 B l d 6. X [76] Inventor: Louis A. Derwin, 4513 Cross St., 565,094 8x896 253? I Downers Grove, 912,277 2/1909 Benson 74/105 [22] Filed: Apr. 26, 1971 Primary Examiner-Robert C. Riordon [21] Appl 137526 Assistant ExaminerGary L. Smith Attorney-John J. Kowalik [52] U.S. Cl 30/14, 30/55, 30/16 [51] Int. Cl B67b 7/36 57 ABSTRACT [58] Field of Search 30/61, 16, 361,

30/366 55 74/105 A device for cutting out an end wall of a container comprising acutting blade mounted on a support which :2: oyac yl'gercipcag UNITED STATES PATENTS blade upwardly and downwardly to cut through the 1,397,2l7 l l/l92l Kepner 30/16 container lL 2,571,728 lO/l95l Kuyk endall 30/16 2,622,316 12/1952 Borland 3016.] X 7 Claims, 7 Drawing Figures 1 DRUM DEI'IEADING DEVICE DISCUSSION OF THE PRIOR ART Prior art devices for cutting off the taps of large containers, usually referred to as drums, which are generally of 55 gallon capacity, are either of the chisel type or the cutter tyep. The chisel type comprises a handle with a cutting blade at one end which is adapted to be struck by a mallet while the blade is held along the inner edge of the chime of the container. This type of tool, although it did cut off the top, left ragged edges, sheared off chips, and is clumsy to use. The cutter types also have some of the failings of the chisel type and in SUMMARY OF THE INVENTION The present inventionis directed to a novel container opening device wherein the parts are so interrelated as to cooperatively hold onto the container and cut out the end cover leaving a relatively smooth finished edge.

A general object of the invention is to provide a novel cutter in which the cutting blade is guided in a rectilinear path for cutting and with a single lever-handle advanced around the periphery of the drum cover.

A more specific object is to provide a novel cutter comprising a body section which is adapted to lay against the cylindrical outside surface of the container, for guiding the blade which works along the inner edge of the chime mounting block which slides within the body, the blade being disposed in position to cut the top of the container adjacent to the chime.

The body provides a hook adapted to rest upon the chime and having a shoulder underposed with respect to the chime and engaging thereunder upon the blade being forced downwardly in a cutting action.

A further object is to provide a novel cutter which is easy to apply and remove with respect to the container and to guide about the annular chime of the container.

A still further object is to devise a novel cutter which DESCRIPTION OF THE INVENTION The cutting device generally indicated 2 comprises a body 3 preferably of rectangular configuration. The body 3 has top and

bottom edges

4 and 5 and

lateral edges

6 and 7 and along the lateral edges is provided with vertical grooves or

guideways

8 and 9 which are defined by flanges 10 and 11 projecting normal to the body plate 12 (FIGS. 1 and 2) at said lateral edges and re-entrant flanges l3 and 14 extending from flanges l0 and 11 generally parallel with the plate 12 and spaced outwardly of the outer flat face 15 thereof.

A complementary rectangular mounting block or slide 18 has a flat inner face 19 engaging the face 15 and at its

lateral edge portions

20 and 21 fits into the

grooves

8 and 9 in interlocked relation therewith for guided vertical sliding movements relative to the body member 3. i

The block 18 at its upper end 24 has a projection or overhang 25 extending substantially normal therefrom a distance to overhang the chime or bead 26 of a container generally indicated 28. The projection 25 has a stepped end face which provides avertical seat 30'and an adjoining downwardly facing shoulder 31.

A cutting blade 32 has its upper comer 33 nested into the comer 34 (FIGS. 4 and 5) formed by the shoulder 31 and face 30 and has an upper edge 35 seated against the underface or shoulder 31 and has its outer face 36 seated against the seat 30. A pair of

bolts

37, 37 extend through

openings

38, 38 in the blade and into threaded apertures 39 in the overhang 25. The heads 40 of these bolts abut the internal side 41 of the blade and upon the bolts being drawn up hold the blade against the seat 30.

The lower portion 42 of the blade is of arcuate crosssection of a radius substantially that of a 55 gallon drum which is of standard size in the industry so that the outer face 36 of the blade tits com'plementally to the inner arcuate perimeter 43 of the chime 26 of the container. The blade has a diagonal lower edge portion 44and is beveled at45 downwardly from the inner face to the outer face to form a sharp cutting edge. Thus the v blade gradually increases in depth from the leading is simple and relatively inexpensive to fabricate and which operates efficiently and performs a satisfactory cutting operation.

These and other objects and advantages inherent in and encompassed by the invention will become more readily apparent from the specifications and the drawings wherein:

FIG. 1 is an inner side elevational view of the novel cutter;

FIG. 2 is an end view thereof taken substantially on the line 2-2 of FIG. 1;

FIG. 3 is an outer side elevational view thereof taken;

FIG. 4 is a perspective view thereof looking toward the inner side thereof;

FIG. 5 is a perspective view thereof looking toward the outer side thereof;

FIG. 6 is a view similar to FIG. 2, showing the cutter applied to a container which is broken away and in section, and

FIG. 7 is a horizontal section of the blade taken substantially on line 7-7 of FIG. 4.

edge 46 to the trailing edge 47 whereby the cut into the end plate or cover 48 of the container is made from the rear end to the forward endofthe blade as hereinafter described.

As best seen in FIGS. 2 and 6, the upper edge 4 of body portion'3 forms a shoulder which engages with the bottom edge 50 of the chime during cutting as hereinafter described A pair of

hooks

51, 51 are secured to the

lateral edges

6 and 7 of the body, each having a vertical leg 52 offset outwardly of the inner face 54 of the body, the legs projecting above the ledge 4 a distance slightly greater than the thickness of the chime.

Hook flanges

55, 55 project from the upper ends of the legs 52 over the chime and are adapted to seat upon the upper edge 56 of the chime preparatory to cutting.

The linkage generally designated 58 is provided for operating the blade and comprises a vertically positioned motion transfer swing link 59 which opposes the outer side 60 of theslide block 18 and at its upper end 61 is pivoted by a pin or bolt 62 suitably fastened or threaded into the upper end portion 24 of the block 18. The lower end 63 of the link 59 is pivotally connected by a bolt or pin 64 to an operating handle or lever 65 intermediate its ends adjacent to one end 66, at which end the handle is pivotally connected by a pin or bolt 67 to the body 3 at the flange 13 thereof.

In operation the cutter is hung from the

hook flanges

55, 55 from the chime and the body 3 is laid against the external surface 68 of the cylindrical body 69 of the container 28. The body 3 is provided with an abutment pad 71 at its lower end projecting inwardly from the inner side of the body. The pad has an arcuate external abutment surface 72 which complementally engages the surface 68 of the container.

It will be observed that the knife blade can be raised high enough to clear the chime and fits against the inner edge of the chime while the hook lugs rest upon the chime and the reaction ledge 4 extends beneath the chime. As the handle is grasped by the operator and moved down, the knife point 75 pierces the top 48, and after cutting the length of the blade the operator raises the handle and moves the cutter forwardly overlapping with the point 75 the previous cut and proceeds to press down on the handle to shear again. The procedure is continued around the entire container until the top 48 is severed from the chime. The outer face of the knife neatly folds the cut edge portions of the cover against the interior of the container.

1 claim:

1. A deheader device for a drum having a cylindrical body and a cover at each end of the body and an annular chime interconnecting each cover with the body, comprising:

a. a support adapted to be positioned against the body;

b. mounting means vertically reciprocal on the support and having:

a knife mounting portion projecting therefrom for overhanging relation to the chime:

c. a cutting blade depending from said knife mounting portion for engagement with the internal periphery of the chime; said bladc having leading and trailing edges;

d. an abutment shoulder on the support for engagement with the underedge of the chime;

e. a manually operable leverage linkage connected between the supportand mounting means for reciprocating the mounting means and advancing the blade into cutting relation with the adjacent cover and retracting the blade therefrom;

f. said linkage comprising a motion transfer link having an upper end pivotally connected to the upper end of said mounting means;

g. an operating handle having one end pivotally connected to the support and pivotally connected intermediate its ends to the lower end of said link; and

h. said mounting means comprising a block, and said support comprising a vertical guideway admitting said block therein and the point of pivot of the link with said block being substantially midway between the lateral edges thereof, and the point of pivotal connection of the handle with the support being adjacent to the leading edge of the blade.

2. The invention according to claim 1 and said support having abutment means with an arcuate containerengaging face.

3. The invention according to claim 2 and said blade being transversely curved and substantially concentric with the interior surface of the chime.

4. The invention according to claim 1 and said support comprising hook means projecting above said abutment shoulder and having hooking flanges of an extent vertically overlapping the abutment shoulder for hanging said device from a drum over the chime thereof.

5. The invention according to claim 4 and said support comprising a block and a container-body abutting element projecting on the block inwardly therefrom below said abutment shoulder and having a concave complemental container-engaging face.

6. The invention according to claim 5 and said mounting means comprising an element having telescoping relation with the block.

7. The invention according to claim 6 and said blade having leading and trailing edges and a diagonal lower cutting edge converging at an acute angle with said trailing edge.

Claims

1. A deheader device for a drum having a cylindrical body and a cover at each end of the body and an annular chime interconnecting each cover with the body, comprising: a. a support adapted to be positioned against the body; b. mounting means vertically reciprocal on the support and having: a knife mounting portion projecting therefrom for overhanging relation to the chime: c. a cutting blade depending from said knife mounting portion for engagement with the internal periphery of the chime; said blade having leading and trailing edges; d. an abutment shoulder on the support for engagement with the underedge of the chime; e. a manually operable leverage linkage connected between the support and mounting means for reciprocating the mounting means and advancing the blade into cutting relation with the adjacent cover and retracting the blade therefrom; f. said linkage comprising a motion transfer link having an upper end pivotally connected to the upper end of said mounting means; g. an operating handle having one end pivotally connected to the support and pivotally connected intermediate its ends to the lower end of said link; and h. said mounting means comprising a block, and said support comprising a vertical guideway admitting said block therein and the point of pivot of the link with said block being substantially midway between the lateral edges thereof, and the point of pivotal connection of the handle with the support being adjacent to the leading edge of the blade.

2. The invention according to claim 1 and said support having abutment means with an arcuate container-engaging face.