US2593753A

US2593753A - Method of making barrels

Info

Publication number: US2593753A
Application number: US601903A
Authority: US
Inventors: William E Hamacher
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-06-27
Filing date: 1945-06-27
Publication date: 1952-04-22
Anticipated expiration: 1969-04-22

Description

April 22, 19 w. E. HAMACHER METHOD OF MAKING BARRELS Filed June 27, 1945 INVE/V TOR l4 ////'am E hamac/zer' Patented Apr. 22, 1952 @EiFFlCE METHOD OF MAKING BARRELS William E. Hamacher, St. Louis, Mo. Application June 27, 1945, Serial No. 601,903 I Claims.

The invention relates to containers of drum or barrel type and preferably but not necessarily to containers made of superimposed layers of plywood. v

The main object of the invention is to sim.- plify and strengthen the end construction of a container of this general type and. to make the end construction economically. The method of carrying out the invention and the resulting novel production is illustrated in the accompanying drawings in which Figure 1 is a side view of a completed container of the type involved.

Figure 2 is a top view of the same.

Figure 3 is a detail horizontal section drawn to an enlarged scale and taken on the line 3-3 of Figure 1.

Figure 4 is a detail vertical section drawn to an enlarged scale and taken on a line 4-4 of Figure 2.

Figure 5 is a vertical section corresponding generally to Figure 4 but taken through the body of the barrel before it is finished and .illustrating a step in the manufacture of the barre Figure 6 is a similar view illustrating another step in the manufacture of the barrel.

Figure '7 is an end view of an annulus severed from the barrel body as shown in Figure '5 and having a segment removed for purpose described below.

Figure 8 is a diagrammatic illustration of a preliminary step in the manufacture of the barrel.

-The body of the barrel consists of a plurality of sheets of plywood l which are inserted one after another into a forming machine comprising a collapsible drum 2 and a plurality of pressure rolls 3. The rotation of the drum draws the sheet between the drum and the rollers and forms the sheet into a cylinder. The meeting edges of the sheet are beveled as indicated at 4 and are glued together. Then a second sheet having glue applied to its inner face is inserted into the machine over the first sheet and similarly rolled into a cylinder, and its ends are beveled and glued. together as indicated at 5, the joints between the successive sheets being staggered. Additional sheets are similarly added until the body of the barrel is completed, Figure 3 showing the use of four sheets of twoply material.

Following the forming of the body as just described, the winding drum is' contracted, the pressure rolls are released and. the barrel is removed from the machine. Subsequently the exterior face of the barrel near its ends is tapered as indicated by the line X (Figure 5). Then an annulus 6 is severed from each end of the barrel by cutting along the line Y. Then the exterior face of the barrel near its ends is again tapered as indicated by the line X. Then theinner face of the barrel body near each end is beveled as indicated by the line Z which is inclined to the side of the barrel to the same angle as lines X and X but in the opposite direction.

A disk-like barrel head 8, preferably made of plywood, has glue applied to its edge which is inclined to fit the beveled inner face of the barrel and the head is inserted in the barrel body as shown in Figure 4.

A segment I (Figure 7) is removed from annulus 6 and the annulus inverted and glue applied to its outer and lower face. The annulus is contracted to bring its ends together andis "applied to the barrel head and side as shown in Figure 4. Pressure is applied to thrust the glued parts together and a metal hoop 9 is applied to the outer face of the barrel and is secured by rivets ID, after which the pressure mechanism may be removed and the barrel stood aside to dry. Openings l3 are provided for filling and emptying the barrel with liquid for which the barrel is particularly adapted.

With this arrangement the joint between the head and side of the barrel is tight and the head is secured in place by the annulus which contributes to the joint and is formed of the same material as the adjacent portion of the barrel side wall. It is unnecessary to provide a shoulder on the inner face of the barrel to seat the head, in fact the joint formed by the beveled surfaces is tighter than if a shoulder were provided. The use of the end portions of the original cylindrical barrel body for the retaining rings avoids the necessity of forming and fitting separate retaining rings and insures the rings and barrel sides being of material of the same grade and condition and this is advantageous to the security and tightness of the assembly. There are one or more layers of glue between the exterior and interior of the barrel at all points thus avoiding crevices through which moisture may penetrate.

The details of the structure and the method of making it may be varied without departing from the spirit of the invention and the exclusive use of those modifications of the structureand method of making the same described 3 above coming within the scope of the claims is contemplated.

What is claimed is:

1. The method of making a barrel-like container of plywood which is'characterized by forminga cylinder, beveling the outer face of the cylinder near the end thereof, severing an annulus from the beveled end portion, beveling the inner face of the remaining portion of the cylinder near the end thereof, inserting a head within the cylinder and spaced inwardly from the end of the remaining portion of the cylinder with its periphery fitted against the beveled inner periphery of the cylinder, removing a relatively short section of the annulus, inverting the annulus, contracting the annulus and inserting it within the end of the cylinder with its beveled outer periphery fitted against the beveled inner face of the cylinder, and securing the annulus to the cylinder.

2. The method of making a barrel-like container of plywood which is characterized by forming a cylinder, beveling the outer face of the cylinder near the end thereof, severing an annulus by cutting through the beveled end portion transversely of the cylinder axis, beveling the inner face of the cylinder inwardly from the line of severance, inserting a head within the cylinder with its periphery fitting against the beveled inner face of the cylinder, removing a segment from the annulus, inverting the annulus and contracting it to bring its ends adjacent to each other and inserting it \vithinthe end of the cylinder against said head and with its beveled outer face fitted against the beveled inner face of the cylinder and securing the annulus to the cylinder.

3. The method of making a barrel-like container of plywood which is characterized by forming a cylinder, bevelingthe outer face of the cylinder near the end thereof, severing an annulus from the beveled end portion by cutting through the cylinder transversely of its axis, beveling the inner face of the remaining body of the cylinder near the end thereof, inserting a head Within the cylinder with its periphery fitting against the beveled'inner face of the body of the cylinder, removing a segment from the annulus, inverting the annulus and coating its lower and outer faces with glue, contracting it to bring its ends adjacent to each other and inserting it within the 4 end of the body of the cylinder against said head and with its beveled outer face fitted against the beveled inner face of the body of the cylinder and applying pressure to thrust the glue-coated parts against the opposing parts.

4. The method of making a container of the class described characterized by forming a cylinder of successive layers of adhesive-coated plywood, floeveling the outer face of the cylinder near an end thereof, severing an end portion of the cylinder to form an annulus, removing a segment from the annulus, beveling the inner face of the cylinder near the end thereof, inverting and contracting the remaining portion of the annulus and inserting it within the cylinder with the beveled outer periphery of the inverted annulus fitting against the beveled inner face of the cylinder, and securing the annulus to the cylinder.

5. The method of making a container of the class described characterized by forming a container body in the shape of a cylinder, severing an end portion of the cylinder to form an annulus, applying a disc-like head to the body with the perimeter of thehead against the inner wall of the cylinder and with the head spaced inwardly from the end of the cylinder, removing a relatively short arcuate portion of the annulus and compressing the annulus accordingly to reduce its diameter and circumference, applying the annulus to the outer face of the head and to the inner Wall of the cylinder, and securing the annulus to the cylinder.

WILLIAM E. HAMACHER.

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

UNITED STATES PATENTS McConnell May 1, 1945