US643551A - Clamp for making boxes. - Google Patents

Description

No. 643,55l. Patented Feb. 13, won. w. L. SMITH.

CLAMP FOR MAKING BOXES.

(Application filed. May 13, 1899.)

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GU50 H12 5 UNITED STATES PATENT OFFICE.

\VALTER L. SMITH, OF CHICAGO, ILLINOIS, ASSIGNOR TO HENRY DATE, OF AUSTIN, ILLINOIS.

CLAMP FOR MAKING BOXES.

SPECIFICATION forming part of Letters Patent No. 643,551, dated February 13, 1900. Application filed May 13, 1899. Serial No. 716.772. (No model.)

T0 00 whom it may concern.

Be it known that I, WALTER L. SMITH, a citizen of the United States, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Clamps for Making Boxes, of which the following is a specification, and which is illustrated in the accompanying drawings, forming a part thereof.

This invention relates to clamps adapted for use in the manufacture of boxes or filecases having a rounded edge, such edge being formed by overlapping portions of the two larger sides of the box, the object of the invention being to provide a clamping device by means of which such boxes may be readily and cheaply constructed and in which the clamping-jaws are given an even and uniform pressure throughout the entire length of their contacting faces.

The invention consists of a table, a rail secured thereto, a jaw projecting from the rail over the table, a clamping-jaw cooperating with the first-mentioned jaw and having a transverse rib across its back or rearward face, and intermediate of its ends a wedge rod or block entering between the table and this rib, so as to force the clampingjaw against the first-mentioned jaw and secure an even pressure throughout the entire length of the contact-ing faces.

The invention consists in further details of construction, as hereinafter set forth, and as illustrated in the accompanying drawings, in which Figure 1 is a plan view of a plurality of boxes in the construction of which my im proved clamp is adapted to be used. Fig. 2 is an isometric view of one of such boxes. Fig. 3 is an end elevation of the clamp, the clamping-jaw and the box in process of construction being shown in section. Fig. 4 is a detail perspective of the clamp with the clamping jaw removed. Fig. 5 is a view similar to Fig. 3, the box, however, not being within the clamp and the jaws being separate. Figs. 6 and 7 are transverse ver:

tical sections of the clamping-jaws, showing two forms of dies; and Fig. 8 is an end elevation of the jaws.

The box A is oblong, rectangular in form,

and is open at the top. Its sides and ends are formed of two boards a I), each of which is of sufficient length so that its end portions may be scored and bent to form the end walls, 5 5

the adjacent ends of the two sides a I? overlapping and being glued together. At the rounded end of the box each of the overlapping portions is offset, as shown at c d, to

form a shoulder against which the end of the clamping-jaws of any considerable length in which a uniformity of pressure may be secured from end to end. These difficulties have been overcome in the clamp which forms in {part the subject of this application and which I will now proceed to describe.

This clamp comprises a plate or table E, upon'which there is secured a rail F, having in its upper face a longitudinal T-groove f.

A jaw G is secured to the upper face of the rail F, so as to project laterally therefrom across the table E. This jaw is adjustable longitudinally of the rail F and is secured thereto by means of a screw-bolt H, havinga T-head which enters the groove f, this bolt extending through the upper face of the jaw G, and a nut h being applied to it, by means of which the jaw maybe rigidly fixed in any position to which it may be adjusted upon the rail. To the under face of the projecting portion of the jaw G there is detachably secured a 0 shoe M or M, Fig. 7, which conforms in shape to the box end to be secured. Ishow this shoe as being attached by means of a pair of screws 'm, passing downwardly through the jaw G. A die 0, adapted to cooperate with 5 the shoe M, is placed below the jaw G and is secured between a pair of cheek-plates 0, the three parts being united by screws, as shown at P. The plates 0 extend below the die 0,

and substantially midway of their length there is located between them a transverse bar R, which practically forms a transverse In the art of box-making it has here- 65 rib for the die. A rod Q, having at one end a knob q and adjacent to its other end an oblique face q, is adapted to enter between the cheek-plates o and below the die 0, its oblique portions (1 cooperating with the rib or rod R to raise the die as the rod Q is thrust inwardly by pressure upon its knob q.

The box having been applied to the jaw G so that its overlapping edges lie between the jaw and die 0, the rod Q is thrust inwardly, thereby forcing the die upwardly and tightly compressing the members of the box between it and the shoe M. By applying the wedge action for raising the die to a transverse rib substantially midway between its endsauniformity of pressure upon the parts of the box is obtained.

While I have shown but a single jaw G, it is obvious that any number maybe mounted upon the rail F.

While I show the rib R as being located approximately midway of the die and prefer such location, it will measurably serve the purpose of applying the pressure uniformly throughout the length of the die if located anywhere between the ends thereof.

I claim as my invention 1. In a clamp for making boxes, in combination, a table, a rail secured to the table, a jaw fixed to the rail and extending over the table, a clamping-jaw below the fixed jaw and having a transverse rib across its under face, and a wedge adapted to enter between such rib and the table.

2. In a clamp for making boxes, in combination, a table, a rail secured to the table and having a longitudinal T-groove in its upper face, a jaw projecting from the rail over the table, a T-bolt adapted to adjustably enter the T-groove and engage the jaw, a clamping-jaw for cooperating with the first-mentioned jaw and having a transverse rib across its lower face, and a wedge adapted to enter between such rib and the table.

3. In a box-makers clamp, in combination, a fixed jaw, and a clamping-jaw having a transverse rib across its rearward face, a table or other fixed abutment back of such clamping-jaw, and a wedge adapted to enter between such fixed member and the clamping-jaw and having its bearing upon the latter through the medium of the rib.

4. In abox-makers clamp, in combination, a table, a rail fixed to the table, a jaw adjustably fixed to the rail and projecting laterally therefrom over the table, a clamping-jaw between the table and the first-mentioned jaw and comprising a die, cheek-plates inclosing such die and extending above and below the same and a transverse rib across the back of the die substantiallymidwaybetween itsends; and a wedge adapted to enter between the rib and the table.

\VALTER L. SMITH.

Witnesses:

LoUIs K. GILLsoN, PAUL CARPENTER.

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