US512193A - Charles l - Google Patents

Description

(No Model.)

0. L. HEISLER. BOOT TREEING MAGHINE.

No. 512,193. Patented Jan. 2, 1894.

W WITNESSES INVENITOH 2. M. By

A TTORNEK/ CHARLES L. HEISLER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF TWO-THIRDS TO HUGO KRANZ AND HENRY ALETTER, OF BERLIN,

CANADA.

BOOT-TREEING MACHINE.

SPECIFICATION forming part of Letters Patent No. 512,193, dated January 2, 1894.

Application filed February 4, 1893. Serial No. 461,017- (No model.) I

To all whom it may concern:

Be it known that I, CHARLES L. HEISLER, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Boot-Treeing Machines, of which the following is a specification.

My invention relates to boot-treeing machines, and more especially to improvements in such machines, which are adapted for operating boot-trees or lasts in the manufacture of boots, stockings, &c., from felt, wool, or similar'plastic or semi-plastic materials.

One of the objects of my present invention is to provide an improved machine for operating a folding last in such a manner that the mitten or blank form for the boot, stocking, or other device placed upon it, having been reviously made plastic or pliable by steaming or otherwise, can be drawn tightly over the tree, and this drawing action can be made to continue throughout the operation of crimping the boot or stocking thus avoiding the formation of wrinkles in the finished article.

My invention consists in the various features of construction, arrangement, and mode of operation set forth more particularly hereinafter.

Referring to the accompanying drawings forming a part of this specification, Figure 1, is a perspective view of a crimping machine, embodying my invention showing the last and boot crimped and ready to be removed from the machine. Fig. 2, is a side elevation of the machine showing in a side, sectional view the last and boot just after being placed in position on the machine for crimping. Fig. 3, is a transverse sectional view on the lines xw, Fig. 2 in the direction of the darts.

Heretofore great difficulty has been experienced in shaping the mittenor blank for a boot or stocking because of the slipping of the mitten along the last toward the toe,while the crimping operation is being performed to produce the proper shaping of the heel and foot. The boot or stocking when formed was liable to have wrinkles across the instep, and there might be an excess of material in the toe of the stocking or boot resulting from this slipping. It is with the object of overcoming these difficulties that my present invention is made, and it is found that the finished articles are smooth and well shaped corresponding to the form of the tree, and all slipping or liability to mis-sh'ape the article is avoided.

In carrying out my invention any suitable lastL may be employed. The last illustrated in the accompanying drawings, is of that type in which thefoot piece is made to revolve about a pivot located near the instep by means of a hooked-sector engaging with the front leg section in such a manner as to cause suitable links within the last to operate and stretch the leg sections, and at the same time to compel the foot section to assume its normal shape with respect to that of a finished boot, which last forms the subject of my prior application, Serial No. 417,373, filed January 8, 1892, and need not be described herein in detail, it being sufficient to state in general terms that it consists essentially of the front leg section 33, a back leg section made up of two pieces 35 and 36 sliding on each other, a foot piece made up in sections 37, 38 and 39, connected to the leg sections, the parts being connected by suitable links and levers 31, 32' and 38 whereby the leg pieces can be expanded, and the foot piece operated to properly shape the boot or stocking. The parts when expanded are locked in position by the dog 30 entering a notch 29 in one of the back sections of the last, as more fully set forth in my prior application, to which reference is made for a further detailed description of the construction.

The last in its collapsed condition with the mitten 34 placed thereon is mounted upon some suitable support to be operated, and I have shown a bench or platform having operating mechanism attached thereto, substantially as hereinafter set forth.

In order to prevent the slipping of the mitten on the last, and the formation of wrin kles, I arrange suitable clamps which engage with the exterior surface of the mitten on the last outside the leg sections, and which are caused to operate in such a way as to press upon and draw the plastic material surroundtoo ing the last toward the top or leg end thereof, thus causing the material of the mitten to pull tightly at the toe, and to take up any loose stock which tends to accumulate at or near the instep, so that a perfect shape boot or stocking will be formed.

Mounted upon a bench 1, is a suitable gear frame 2, supporting a pinion 21, and a hookedsector 22, which latter is provided with a hook 23, arranged to engage the front section 33 of the last in the manner shown. This sector and gear can be operated in any manner, and I have shown a lever 20 having a counter-weight 3 connected to the shaft of the pinion. Mounted on the bench is a vertical standard 6, the upper end of which is shown as formed like an. inverted U, and connected to this standard and the gear frame is a stay or stays 5, which tend to support the standard in its vertical position. It will be readily understood that other arrangements of the standards can be used, but this I find is very convenient, allowing freedom of access to the parts, and is simple and cheap in construction.

Upon the standard 6 are pivotally mounted an arm or arms 11, which are shown as connected at one end by a suitable handle 12, and provided at the other with a counterweight 4. Mounted in the bearing 28, is a rod 26 arranged to slide freely through an openingin said bearing, and surrounding said rod is a spring 24, adj ustably arranged thereon, while to the end of the rod is pivoted a clamp 27. Connected to this clamp is a link or links 13, which are provided with a series of holes, and by means of which they are adjustably connected with the arms 11.

Mounted on a suitable support 9, attached to the bench is a pivoted dog 10, controlled in. the present instance by a spring 8, and arranged to engage with the arms 11, and hold them in the position shown in Fig. 1; also mounted on the bench in any suitable position, as on the brace 15, is a rod 16 provided with a suitable adjustable spring, and carrying the lower clamp 17, and connected to this clamp, and adj ustably connected to the bench as to the lower toe bar 19, are the links 14.

The sector hook 23, is shown as located as near the axis of the sector 22 as practicable, in

order to get sufficient motion on the front section of the last to expand it, and the lower section 35 bears against the lower edge of the sector plate, so that when the sector and hook are operated, the last does not of itself have a longitudinal movement toward the sector plate, but the parts are expanded laterally, and the foot parts properly operated.

In operating the device, the parts being arranged substantially as indicated in Fig. 2, the mitten or blank 34 being slipped over the closed last, the last is placed between the upper and lower clamps, with the sector hook engaging the front section of the last, the last being supported mainly by the lower clamp 17. The operating arm is then brought down in the direction of the dart a, until it engages the dog 10, and it will be seen that in this operation, the springs on the clamping rods will yield to some extent, while the clamps under the action of the links 13 and 14 will take the direction indicated by the dart b, and by their slidingaction draw the mittentightly upon the last. The lever 20 is then operated, actuating the sector hook to cause an expansion of the sides of the last and shaping of the foot pieces, and it will be seen that as the last expands, the clamps yielding under the action of springs, but being held by the links 13, 14, will further be moved in the direction of the darts b, 0, caused by the spreading of the leg sections, and will still further tend to draw or stretch the mitten, and prevent any slack or wrinkle at the instep, or other portion of the boot or stocking. When this operation is completed, the dog 30 engages the notch 29, and the parts are in the position substantially as indicated in Fig. 1, where the last locked in its stretched condition,and can be removed for the purpose ofdrying.

It will be seen that the parts are made adjustable, the links and bars being provided with a series of holes for this purpose, although of course it is evident other adjusting means may be applied.

While I have shown and described what I consider to be the preferred means of carrying out my invention, I do not limit myself to the precise mechanism for actuating the clamps as it is evident that-the details of construction and arrangement may be varied without departing from the principles of my invention, and the same results be accomplished. v

What I claim is 1. In a boot treeing machine, the combination with a collapsible last supporting the mitten; of a clamp or clamps engaging the exterior surface of the mitten and bearing against the last, thereby clamping the mitten between the last and clamp or clamps, substantially as described.

2. In a boot treeing machine, the combination with a collapsible last supporting the mitten; of a clamp or clamps engaging the exterior surface of the mitten and bearing directly against the last, and means for actuating said clamp or clamps, substantially as described.

3. In a boot treeing machine, the combination with a collapsible last supporting the mitten; of means for expanding the last, and a clamp or clamps engaging the exterior surface of the mitten and bearing directly against the last, substantially as described.

4. In a boot treeing machine, the combination with a collapsible last; of means for expanding the last, a clamp or clamps engaging the exterior surface of the mitten on the last and bearing directly against the last, and mechanism for moving the clamps to stretch the mitten, substantially as described.

5. In a boot-treeing machine, the combination with a collapsible last, of a hooked-sector for expanding the last, clamps bearing on the mitten outside the last, and mechanism for causing the clamps to stretch the mitten as the last is expanded, substantially as described.

6. In a boot-treeing machine, the combination with a collapsible last, of a spring supported clamp bearing on the last and an op erating arm connected by links to the clamp, substantially as described.

7. In a boot-treeing machine, the combination with a collapsible last, of a spring actuated clamp supporting the last, and a link connecting the clamp to the frame of the machine, substantially as described.

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