US608993A - Treeing-support - Google Patents

Description

CHARLES H. POPE, OF BROOKTON, MASSACHUSETTS, ASSIGNOR TO VILLIAM B. ARNOLD, OF ABINGTON, MASSACHUSETTS.

TRI-:I :lNc-SUPPORT.

SPECIFICATION forming part of Letters PatentNo. 608,993, dated August 9, 1898. Appiianonneacanbezo,1897. serrano. 655,769. @modem To 'all whom, t may concern: Y

Be it known that I, CHARLEsH. Porn, o Brockton, county of Plymouth, State of Massachusetts, have invented an Improvement in Treeing-Supports, of Whichthe following description, in connection withV the accompanying drawings, is a specificatiomlike letters on the drawings representing like parts.

My invention is a treeing-support for use in manufacturing boots and shoes, and is particularly intended for use with multipart or divided lasts, rigidly at one of its parts, while the rest of the last or another part thereof' isffree to be moved as may be required."

As heretofore provided, the treeing-support has held the toe and heel portions of the last both rigidly, so that movementof either por` tion thereof could not take place while the last was clamped on its support. It is desirable, however, inthe manipulationofthe kind of lasts in question that one part-niore particularly1 the toe portion of the last-should be capable of movement when desired without requiring that the entire Vlast should be removed from its treeing-support, Y The present in vention,accordingly,is provided'to meet this requirement, and I have herein shown.

the support as adapted to holdthe heel portion of the lastrigidly, while thetoe portion; is freely movable; but I do not restrict my-` self in this regard, inasmuch as this feature of my invention resides in securing any part ofl a multipart last in'rigid position, so as to permit another part of the'last to be capable of movement. p Y

As herein shown, I have providedan eX- pansible clamp adapted `to enterthe' usual spindle-hole 4of the lastand a wedge-rod operable in the leg part of the treeing-support, so as to expand the clamp,this rod having a yielding connection with an operating member and being provided with means normally tending to raise it out of engagement with the clamp. i

The details of my inventionwill be more fully pointed out in the course of the following description, reference being had to the accompanying drawings, and the invention will be defined in the appended claims whereby the lastmay be held In the drawings, which show a preferred embodiment of my invention, Figure lis a central vertical section of my invention, showing it in operative holding engagement with a usual two-part last. Fig. 2 is afragmentary perspective view of the upper end of the treeing-support. Fig. 3 is a fragmentary vertical longitudinal section showing a modification. f Y Y For clearness of understanding I have herein illustrated my invention in connection vwith an Arnold last having its toe part a and heel part d hinged together at c, so as to be capable of free swinging movement relatively to each other, the heel Zn of the last being provided With a usual spindle-hole b', fitted with a usual thimble b2.

My improved`treeingsupport D, of iron or any other suitable. material desired, is provided with a leg part d at one end and at its other end is shaped, as required, to fit it to the machine or other situation Where it is to be used, it beingherein shown as cutaway at d d2for holding in the usual frame for the purpose.

At the outer end of the leg portion d Ihave provided a holding device adapted to grip or clamp the particular part of the last which is to be held rigid by the support, this holding V,device being herein shown in the form of an eXpansible clamp d3, screwed or otherwise fastened in or secured or formed on the treeing-support, comprising two parts d4 d5, provided with a central recess d6, tapered at its outer end.

Anexpanding device in the form of a rod dl, having a conical end or wedge d8, reciprocates in the leg d and the clamp d8, so as to expand the latter by engagement of the Wedge dsiwith thekconical recess d6 as the rod is pulled inwardly.A

At its outer end the rod-dhas a head or shoulder df, shown as adjustably mounted on the rod by aset-screw d10, this head serving to retain aA spring d, surrounding the rod d?,

and held at its opposite end against thev closed end d1? of an operating member d13,'which incloses the rod and spring and extendsbeyond the body of the tjreeingV-support, where it is provided with a stirrup-dll, pivoted atfd15 on IOO the lower end of the operating member. In practice the stirrup CZM will be connected to the usual treadle mounted in the framewhich holds the treeing-support, so that by depressing the treadle the last will be instantly locked in clamped position on the treeingsupport.

Between end flanges all and a removable annulus (117 I provide a spring dlg, which constitutes a preferred means for automatically restoring the parts to their normal unlocked ,or unclamped positions.

The spring d, as above described, constitutes a compensator or yielding connection between the rod d7 or clamp-actuator and the operating member C113, so that although the latter may be uniformly moved a certain distance in its operation, yet the clamping-rod will be moved only such a distance as may be required for operating the clamp, it being understood that in some instances it will be necessary to expand the clamp more than at other times in order to firmly and rigidly lock the engaged portion of the last thereby-as, for instance,when the thimbles b2 vary slightly in size or are Worn.

By the term compensator, which I em`- ploy in the claims, I mean a device which compensates for inequalities in the sizes of the Socket-thimble or other varying conditions by permitting the clamp to be actuated only sufiiciently for properly clamping, yet permitting the operating member to move still further, if necessary, to complete its usual throw of movement. For example, the operating member may be built to move an inch; but a defective or unusual thimble b2 may cause the clamp to wedge fast when the rod 17 has moved a quarter of an inch, and the compensator, therefore, is any mechanism that will permit this movement of a quarter of an inch and then allow the clamping device to stop there in its clamped position, while permitting the operating member to continue its movement for the rest of the inch.

I have herein shown the operating member and its connected parts as mounted in a recess d19 in the treeing-support, this being a compact and convenient form of my invention; but it will be understood that I am not restricted to such preferred embodiment, inasmuch as my invention includes any form and location of operating means for a holding device and that the latter may also be varied, provided it is capable of cooperating with a last so as to removably clamp the latter or a required part thereof onto a treeing-support.

In order to prevent relative rotation of the treeing-support and the last, I provide on one a recess or cavity and on the other a projection adapted to register therewith when the last is in clamped position and have herein shown a recess d20 in the leg of the support and a pin b3 projecting from the last to enter the recess. Viewing Fig. l, it will be observed that the last does not extend exactly at right angles to the treeing-support, but is slightly oblique thereto. For certain purposes, particularly for the convenience of the operators, it is desirable that this Obliquity should be considerable, and accordingly I have shown in Fig. 3 a provision for attaining this object, where it will be observed that the rod d7 is hinged intermediate its length at d, in which case the perforation in the leg of the support is provided with an offset or enlargement, as shown at 61.22, in order to permit of the slight longitudinal movement of the rod which is necessary to ensure proper clamping action of its head d8.

As shown in Fig. 3, I prevent rotation of the last on the treeing-support by making the interior of the thimble or socket b2 square to correspond to a square clamp C123, held rigidly in the leg of the treeing-support by means of pins (F4, said clamp being otherwise precisely the same as shown in Fig. 2.

In operation when it is desired to mount a last on my treeing-support all that it is necessary to do is to place the lastin position with its spindle-hole b or other recess over the expansible clamp d3 or to properly locate the last so that whatever means may be provided thereon for the purpose may coperate with a holding device on the support and then operate the treadle or other means to move the operating member d13 and actuate the clamp, which movement instantly locks the last or, in the case of a multipart last, locks one part thereof rigidly onto the treeing-support, the last being held against relative rotation on the support by the interlocking of the pin b3 and recess d20.

The spring du or other yielding connection provided between the clamp-actuator dT and the operating member dlg causes the clamp to be expanded as far as may be necessary and no farther. Instantly upon the releasing of the treadle or other operating means the spring dlg automatically releases the parts from their clamping position.

From the above description it will be understood that while the last as a whole is held firmly against removal from the treeing-support, yet only one part thereof is maintained rigid, and the other part or parts of the multipart last are free to be turned on their hinge, as required.

While I have herein described in detail the various parts of my invention, I wish it clearly understood that my invention is not limited to. these details, but that my invention is intended to include any holding means whatever Which coperate with and between a last and a treeing-support for holding rigid one of the parts of a multipart last, while leaving another of the parts thereof freely movable, any means for preventing relative rotation of the last on its support, any means for operating the holding device so as to fix or release the last on the support, any compensator or device to accommodate the operating mechanism to the varying requirements of the IOO clamp or other holding device, and any means for automatically restoring the parts to their normal non-clamping positions.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is-

l. A treeing-support, adapted to coperate with and hold a multipartflast, said support having heel-holding means for rigidly supporting the heel of said last While leaving the toe portion of the last freely movable, substantially as described.

2. A treeing-support, adapted to cooperate with and hold a multipart last, said support having a holding device for rigidly supporting one of the parts of the last While leaving another of the parts thereof freely movable,

vsubstantially as described.

3. The combination with a treeing-support and a last, of holding means for rigidly securing the treeing-support to the heel of the last, said means being confined in its operation to the heel part of the last, and coperating means on the abutting parts of the heel and the leg portion of said support for preventing relative rotation of the lastV and support, substantially as described.

A. A treeing-support, provided with an expansible clamp adapted to be inserted in a socket in one end of a last, means moving in- Wardly toward the treeing-support to expand said clamp into clamping position and an operating device for pulling said expanding means into clamping as described.

5; A treeing-support, provided With an expansible clamp adapted to be inserted in a socket in one end of a last, a Wedging device having its smaller end extending toward the treeing-support to Wedge said clamp into clamping position, and means to operate said device, substantially as described.

6. A treeing-support, provided with an expansible clamp adapted to be inserted in a socket in one end of a last, an expanding device to expand said clamp, and operating mechanism for said expanding device, said operating mechanism including compensating means to accommodate the mechanism to varying requirements of the expansible clamp, substantially as described.

7. A treeing-sup port, provided Witha holding device adapted to engage and hold a last, and operating mechanism for said holding device, said operating mechanism including a compensator intermediate its ends, substantially as described.

8. A treeing-support, provided With an exposition, substantially pansible clamp, a reciprocating rod for expanding said clamp, an operating member therefor, and a yielding connection between said rod and member, substantially asI described.

9. A treeing-s upport,provided with a holding device to engage the heel of a last, and means to actuate said device to clamp the last to the support, said means comprising a reciprocating rod, provided with a head, an operating member inclosing said rod, and a spring on said rod held under tension by said head'and said operating member, substantially as described.

lO. A treeing-support,provided With a holding device to engage the heel of the last, and means to actuate said device to clamp the last to the support, said means comprising a reciprocating rod, provided with a head, an operating member inclosing said rod, and a spring on said rod held under tension by said head and said operating member,said member being retained in a recess provided in the leg of the support, and a spring normally holding said member inwardly Within said recess,sub stantially as described.

11. A treeing-support, provided at the end of its leg portion With a holding device adapted to be inserted in a recess provided'there- .for in the heel of a last, means to clamp said heel rigidly to the support, and automatic meansnormally tending to release said parts from clamping position, substantially as described.

12. A treeing-support provided at the end of its leg portion with a holding device adapted to engage and hold a last, and operating mechanism for said holding device including f1 a rod reciprocable in said support, said support having an oblique end to hold the last in an oblique direction, and said rod extending a portion of its length in thegeneral IOO direction of the support and the rest of its length substantially perpendicular to the last,

substantially as described;

13. A treeing-support provided with a holding device adapted to engage and hold a last,

and an operating-rod for said holding device reciprocable in said support, said rod being hinged intermediate its lengthwithin said support, substantially as described.

In testimony whereof I have signed my IIO name to this specification in the presence of tWo subscribing Witnesses.

CHARLES H. POPE. Witnesses:

GEo. H. MAXWELL, FREDERICK L. EMERY.

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