US1900683A - Hand stitching tool - Google Patents

Description

March 7} 19 33. ALLEN HAND STITCHING TOOL Filed Nov. 7, 1930 2 Sheets-Sheet l INVENTOR.

HOWARD CnALL EN.

ATTORNEYS.

March 7, 1933. H. ca. ALLEN HAND STITGHI'NG fpooL Filed Nov. 7, 1930 2 Sheets-Sheet 2 Fig.9

INVENTOR.

-, HOWARD G. ALLEN ATTORNEYS.

, ated.

Patented Mar. 7, 1933 UNITED STATES PATENT OFFICE HOWARD G. ALLEN, OF NIAGARA FALLS, NEW YORK, ASSIGNOR T0 H. R. BLISS COM- PANY, INC., 01 -NIAGA.RA FALLS, NEW YORK, A CORPORATION OF NEW YORK HAND srrrcnms TOOL Application filed November 7; 1930. Serial No. 494,088.

'larger and more expensive non-portable stitching. machines is not warranted.

'In the accompanying drawings:

Fig. 1 is a side elevational viewot the stitching machine with parts cut away depicting some of the structural features.

Fig. 2 is an underside view of the same. Fig. 3 is a view of the machine illustrating the position of the parts when partially oper- Fig. 4 shows the position of the parts just when the stitch is driven.

Fig. 5 is an end view illustrating the nor- 2 mal at-rest position.

Fig. 6 is an end view showing the driver and anvil institch-driving position.

Fig. 7 is a perspective view showing a container and an anvil which may be used with the stitching machine illustrating one manner of use.

Fig. 8 is a view of a stitching too]. equipped with a straight blade anvil.

Figure 9 is a top plan view of a blade anvil.

The tool may comprise a body portion 1 having a handle 2 by means of which it may be manipulated, a head 3, in which there is situated a driver 4, the upper end of which is shown at 5; an adjustable plug 6 is screw straight threaded in the head. The machines may be operated as by means of a lever 7 fulcrumed asat 8. The particular anvil driving means is subject to variation, and as shown herein, may takethe form of a shoulder 9 on the anvil, a coil spring 10 situated between the shoulder and adjusting plug 6. The lever 7 includes a projection 11 arranged to engage the head 9 and raise it, thus compressing spring 10. As the lever is depressed substantially to its limit, as shown in Fig. 4, the

arm 11 disengages head 9 and the anvil is driven under action of the spring. Suitable means (not shown) may be provided for fee-ding stitches or staples to a position underneath the anvil.

Mounted upon the fulcrum pin- 8 of the lever is an eccentric 15, and rotatably mounted upon this eccentric is an arm 16. The anvil against which the legs of the stitch are clinched as shown in Fig. 6, shown at 18. This anvil may be of a shape as shown in Fig. 2 having an anvil portion proper, as shown at 18 underlying the driver. and extending out to the side of the machine, as shown at 19, a body portion as at 20 connected by an intermediate angularly disposed bent part 21 to the part 19. The anvil is movably mounted, and for this purpose may 'be pivoted at 22 to the body of the machine through the means of a plate 23 having a flange 24 secured to the anvil as by means of screws 25. The anvil is connected to the arm 16 as at the point 30, and this may be done through the means of plate 28. The anvil shown is what may be termed a'blade anvil, and moreover, an anvil of the shape shown is of the type which can be inserted.

between two overlapping flaps of the container with the anvil proper positioned below both flaps after the manner illustrated in Fig. 7. However, a straight anvil may be placed upon the machine desired.

In operating the tool it is manipulated to position with the anvil underneath two or more elements which are to be stitched together, as for example, overlapping flaps of afiber board container, and this is facilitated because, as will be noted by reference to Fig. 1, the anvil is spaced from the driver and the body of the machine. \Vith the tool in proper position the operator depresses lever 7. When depressed until about the position shown in Fig. 3, the anvil is raised by reason of the eccentric 15 pivoting the anvil about the point 22, at the same time theprojection 11 raises the driver against the action of the spring 10. When the lever is moved substantially to its final position the arm 11 disengages the head 9, and at this time the anvil is close to the body of the stitching machine.

As soon as the arm 11 dlsengage's the head 9 the driver is driven by the spring 10 and a. stitch is driven through the articles to be stitched and clinched, as shown in Fig. 6.

Thus in handling this tool, the body and anvil are spaced apart to permit of easily inserting the anvil underneathv the work to be stitched, but this space is greater than that desired to effect efiicient stitching or stapling, but this problem is met by the movable anvil which moves up so that the work is gripped between the anvil and the body of the machine just prior to and during movement of the driver. It will be appreciated that suitable means (not shown) may be provided for locating a stitch or staple underneath the anvil as it is about in the position shown in Fig. 3, so that when it is released the same is driven and clinched.

As above stated, the anvil may be of a straight type and such as shown in Fig. 8 wherein the stitching tool is equipped with a straight blade anvil 32. This straight anvil may also be-movably mounted as regards the body of the tool and may be used for stitching two or more parts of work together where it is unnecessary to have a reverse bend to underlie both parts of the overlapping work. It will be understood that the particular means for moving the anvil is subject to a large range of variation and equivalents.

The parts may be arranged so that the work may be gripped and more or less held by being engaged between the anvil and the body during stitching operation. In other words, as the anvil comes up close to the body these parts tighten against the work. This is not essential to the invention as it may be operated without this gripping action, but it may be advantageous in some instances.

I claim:

1. hand stitching tool comprising a body, a drlver, a spring acting upon the driver, means for raising the driver against the spr ng action and to release the same for sprlng-actuated driver action, a'pivotally mount-ed'anvil having a stitch clinching part normally spaced from the bodyand in alignment with the driver, and means connecting the anvil with the first mentioned means spring is compressed whereby to position the stitch clinching part of the anvil in close proximity to the body for driver operation.

3. A hand stitching tool comprising a body,

a stitch driver adapted to be projected from the body in the driving of a stitch, a manually movable element for controlling the driver driver action after the work has been gripped between the body and the anvil.

In testimony whereof I atfix my signature.

HOWARD G. ALLEN.

whereby the anvil is rocked when the driver I spring is compressed to position the stitch clinching part of the anvil in close proximity.

to the body for driver action.

2. A hand stitching tool comprising a body, a driver, a spring acting on the driver, a lever, means on the lever for compressing the spring and then releasing the same to efiect driver operation, a pivoted anvil having a stitch clinching part in alignment with the driver but normally spaced from the body, an eccentric controlled by the lever, and means operated by the eccentric for moving the anvil on its pivot toward the body as the

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