US1679346A - Support - Google Patents

Description

Aug. 7, 1928.

W. R. BARCLAY SUPPORT Filed June 20, 1924 /NVENrU/e.

Cil

Patented Aug. 7, 1928.

UNITED STATES PATENT OFFICE.

WILLIAM ROIDERICK` EARCLAY, OF LEICESTER, ENGLAND, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATERSGN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SUPPORT.

Application led .Tune 20, 1924, Serial No; 721,192, and in Great Britain November 17, 1923. Y

This invention is concerned with supporting or positioning the work or a tool in operations on shoes or parts thereof, and particularly relates to the supporting of shoes when on their lasts by a projection, known as a last-pin or spindle, which enters an opening in the last. Shoes are commonly supported in this manner for many operations where pressure is to be applied. Among these operations may be giv-en as ex amples, heel-attaching and solelaying or levcling. Sometimes the last-engaging spindle is utilized to guide a driver for inserting a nail or other fastening to hold a heel temporarily upon a shoe, a hole being bored through the cone of thev last for this purpose. This is as illustrated in British Patent No. 177,015, Haldinstein, March 23, 19221.

An object of the invention is to provide means for distributing the pressure upon the work-support, as when a shoe and last are held upon a last-pin. Here, the effect is divided between the crown of the last and the surface engaged by the end of tliepin, thus avoiding the application of excessive pressure to either surface. IVhen heels are attaclied, with the apparatus heretofore used, by nails driven through a hole in the last, if the thickness of the last from crown to heelseat is less than the length of the spindle which enters the last-pin-hole, the entire pressure employed during the operation comes upon the end of the spindle, and this, being small in area, may be forced intothe insole, leaving an undesirable depression therein. Such effects I minimize by furnishing supporting members, independently movable longitudinally of the support or in the same direction under the infiuence of the work, at least one of the members being secured against movement by-retaining means controlled in such movement. More specifically, I utilize a. jack having movable members to engage, respectively, a. hole in the last and the lastcrown, with locking means to prevent such movement following the application of pressureupon one of the members. In the nailing of heels, the member entering the last-pin hole may have a passage or passages to guide the fastenings and the drivers therefor.

One form of work-support or jack embodying my invention is illustrated in the accompanying drawing, in which r3-3 of Fig. 2;

Fig. 4 is a broken detail, in side elevation, illustrating the manner of securing Athe drivers; and i j i Fig. 5, a perspective view of a portion of a shoe with its attached heel.

lThis organization/may be employed, for

example, in such machines as those disclosed in United States Patents No. 1,195,134, Gouldbourn, Aug. 15, 1916, and No. 1,269,- 654;, Standish, June 18, 1918. At 10 appears the top of a jack-base having reciprocating within it a driver'actuating member 12. Mounted in the upper extremity of the base is the lower section 141 `of the body-portion of the jacl. This is preferably cylindrical, and has an axial bore to receive ka plunger 16, which is alinedjvith the actuating-member 12. To retain the plunger against accidental displacement, a slot extends vertically along one side, and is engagedY by a. screw 18 threaded through the jack-section 141. lNormally resting on the top of the section-14 is an upper section 20 of the bodyportion piv Oted to the lower at 22. This allowsthe upper section to be swung from its operating position, shown in Fig. 2, to its worlcapplying and removing position appearing in Fig. 1, the movement in the latter direction being limited by stop-surfaces 24"associated with `the pivotal mounting.

Surrounding the outer cylindrical surface of the section 2O is a casing or cover-portion 25, in the top of which is an axial opening. Through this opening extends a spindle,

adapted to enter the pin-holeof a last and furnished by a cylindrical projection 26 from an annular enlargement 27 fitting in the space between the casing and the reduced upper extremity 28 ofV the section '20.

Through the spindle are a plurality of lon-` gitudinal passages, of which two are illustinted, these being parallel to the axis and receiving operating tools, as drivers 30. The drivers are fixedv by some such fastening device as a pin 32 entering adjacent depressions in the lower ends of the drivers, within sockets formed in the end of a plunger` or carrier member 34 movable in an axial bore in the section 2O and normally alined with the plunger 1G. A screw 3G extends through the section 2O with its end lying in a slot along the plunger Si. This maintains the drivers in a correct relation to the passages in the spindle. Surrounding adjacent portions ot the section 2() and the casing E25, with its ends abutting against the enlarged lower extremity of the latter and a shoulder upon the former, is a spring 38, which normall y elevates the casing, the extent to which said casing may move in this direct-ion being limited by a screw threaded through the casing and movable into contact with the bottom ot the spindle-enlargement 2T. Interposed between a shoulder upon the plunger 3l and the interior of the enlargement 27 of thel spindle is a spring 42, which acts both to normally depress the drivers, so that their ends lie within the spindle-passages, and to raise the spindle to an extent determined by the, Contact of an opening through the wall ot its enlargement 27 with the under side of the head ot' a screw 44; carried atthe top of the jack-section 20. Lying circumferentially about the spindle-portion 27 is a series ot openings to receive balls 46. The opposite sides of these balls lie in proxiniity to the inner wall ot the easing 25 and to an inclined surface 48 surrounding the reduced portion QS of the upper jack-section. The elements of the device are so proportioned that when` they are in their inactivel or elevated positions, the space between the top ot the casing 25 and the contact-end ot the spindle 26 will be less than the height of any last, between the heel-seat-portion and crown, which is to be applied to the jack. Consequently, when a shoe to which a heel is to be nailed, with its last, is placed over the spindle, the crown, upon being brought into contact with the top of the easing, forces this down. This continues until the insolesurface, meets the upper extremity of the spindle, depressing this. As soon as the enlargement QT of the spindle begins its downward movement, the balls 46, by their contact with the inclined surface 48, are forced into locking engagen'ientwith such surface and with the inner surface ot the casing. As a result of this, both the casing and spin- 'dle are secured against further movement. Thereafter, any pressure applied through the shoe and lastwill he resisted both by the spindle and easing. and this may be made comparatively great. to etlectively hold a heel for its attachment. withoutI causing the spindle end to materially indent the insole.

In using the device, the upper section ot the jack is swung out upon its pivotal connection Q2 from beneath the usual heel pressure member or abutment, and, the drivers being held lowered by the spring 42, nails N are supplied heads down to the passages in the spindle 26, these nails resting upon the upper extremities ot' the drivers 30. A last L, carrying a shoe S to be heeled, is placed over the spindle, which enters the vertical opening Z in the rear portion ot the last. The operator then swings back the upper jacksection to its normal position, placing a heel H in position upon the heel-seat of the shoe. Upon starting the machine, clamping pressure is applied by the heel-abutment. Under this pressure, contact of the crown of the last with the casing 25 deprcs'es said casing until the insole, striking the end ot the spindle QG, forces this down, bringing the balls i6 into locking engagement with the jacksur'iace 48 and the interior ot the casing The pressure is now uniformly distributed between the casing and the spindle-end. rl`hen, the actuating member lf2 rises, urging the plungers 1G and 34; upwardly, compressing the spring 42. The drivers, under the inliuenre ot the plunger 3st-, force the nails which they support through the insole of the shoe into the heel H. Since there is sometimes a tendency tor thc heads ot' the nails to 1oreak through the insole, there may be interposed between said insole and the spindle a washer lV, ot some such material as fiber. rthis washer is preferablyr inn'iertorate, the nails being driven through it., their heads causing it to be forced firmly against the insole. ll'y this arrangement, the liability of the nails to pull into or through the insole is reduced by the provision ot a comparatively argc contact-surtzu-e. Upon the descent of the actuating member l2, the elements of the jack are restored to their normal relation by the springs, upon the pressure being relieved by the rising of the heel-aluitli'icnt, and the upper section 25 may be again turned out about its pivot, to facilitateithe removal ot' the work.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A work-support con'iprising supporting members movable independently longitudinally ot the work-support under the infinence of the work, and retaining means controlled in such movement for securing a member against movement. Y

2. A work-support comprising two supporting members movable imlependently in the same direction under the influence ot the work, and retaining means controlled in such movement for securing both members against movement.

3. A work-support comprising supporting members movable indepemlcnt'ly under the influence of the work, and locking menibers movable by one ot the supporting members and forced thereby into engagement with the associated supporting member.V

4. A work-support comprising a movable ltlt) member arranged to engage thecrown of a last, a movable member arranged to enter an opening in the last and to engage the work, and means controlled by the movement of one member for locking the associated member against movement.

5. A work-support comprising a body portion, a casing movable upon the bodyportion, a movable spindle projecting through the casing, and locking members movable with the spindle and engaging the body-portion and casing.

A work-support comprising a bodyportion, a casing movable upon the bodyportion, a movable spindle through the casing, means arranged to force the casing and spindle outwardly upon the body-portion, and locking members movable with the spindle and engaging the bodyportion and casing.

7. A work-support comprising a bodyportion, a casing movable upon the bodyportion, a movable spindle projecting through the casing and provided with a passage, a tool movable in the passage, and locking members movable with the Ispindle and engaging the body-portion and casing.

8. A jack comprising a body-portion provided with an inclined surface, a casing movable about the body-portion and having a surface arranged to engage. the crown of a last, there being an opening in the last-engaging surface, a spindle projecting through the opening, and locking members movable by the spindle and arranged to be forced by the inclined surface against the casing.

9. A jack compri-sing a body-portion provided With an inclined surface, a casing movpro] ecting able about the body-portion and having a surface arranged to engage the crown of a last, there being an opening inthe last-engaging surface, a spindle projecting through the opening, a spring interposed betweenthe body-portion and the casing, a spring aeting upon the spindle, and locking members movable by the spindle and arranged to be forced by the inclined surface again-st thev casing.

10. A work-support comprising a bodyportion provided With an inclined surface, a casing movable about the body-portion and having a surface arranged to engage the crown of a last, there being anopening in the last-engaging surface, a spindle projecting through the opening and having an enlargement extending between thew body-portion and casing, there4 being openings through said enlargement, and balls situated in the openings and contacting with the inclined surface of the body-portion and with the inner wall of the casino.

l1. A jack comprising a body-portion provided with an inclined surface, a casing movable about the body-portion and having a surface arranged to engage the crown of a last, there being an opening in the last-engaging surface, a tubular spindle projecting through the opening, aplungermovable in the body-portion, a driver securedv to the plunger and extending into the casing, and locking members movable by the spindle and arranged to be forced by the inclined surface againstthe casing.

In testimony whereof I have signed my name to this specification.

VILLIAM RODERICK BARCLAY.

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