US1312543A - Tohzt j - Google Patents

Description

J. J. HEYS. LAST'.

APPLICATION- FILED MAR. I8. ISIB.

l 3 1 2,54 8 Patented Aug. 12, 1919.

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To cl3 whom z't'may concern:

Be it known that I, JOHN `J. Hays, a citi yzen of the UnitedStates, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain impro ments. in Lasts, of which the following description, in connection `with the accompanying-drawings,is a specification, like refer- `on the drawings indicating like partsin `the several gures. This invention A ticular to separable lasts Whose heel parts are separable from the foreparts and removable while the last is in the shoe. Lasts of this type have been proposed for use in shoemaking .according to that process Wherein the heeling operation is performed on a jackafter the removal of the last heel part the pin as to be located we l strength, and this causes the or to shorten so portions of the leaving the forepart of the last in the shoe. The removal of the last heel part permits the attachment of the heel by either outside or inside nailing, and without any danger of crushing the heel part in the former operation, while theforepart of the last holds the forepart ofthe shoe in position under lasting tension. V.'lhe heel part and general construction of such a last need not be as strong and expensive heeling is done, and, further, the heel part When removed can be at once used with another fore'part in making another shoe, While the first-mentioned shoe is setting` on its last fore-part; and thus one heel part can be made to do for several foreparts, and the amount of invested capital per pair of shoes manufactured can be decreased.'

Diiculty has been experienced in provid ing a last which shallshorten rapidi V'and to a sudicient extent to ermit rea y removal of the heel part without disturbing the forepart, and which shall at the same time be markedly cheaper than lasts on which heeling is done. My invention is directed tothe overcoming'of this diiliculty.

It has been found to be desirable to give a swln g movement to collapsible last in shortening it; as distinguished from a movement of translation only. When the heel part is thusswung on. a hinge in, as has been fre uently proposed, l upm the body of the last, in order tosecure the requisite last to lengthen slightly before -lt shox-tens, slowly that thebroad tread i Specication of Letters Patent.

' portion of the shoe; wh

relates to lasts, and in par-v Y `with as in lasts on which be placed as horizontal cut 16,

the heel part of a.

i, VThe last is locked against collapsingby resented neg. ie, taie.,

- Application filed march 1e, 1918. @rial No. 223,114.

heel cannot slip, readily through the Icounter ereas it is desirable that it shorten at once, andrapidly. Lasts of this type which have dispensed with the hinge pin have used more or less complicated nding hinge mechanisms, which weakened the last owing to the extensive cutting required to insert them, and 'are expensive.

. accordance with im ortant features of the invention my last is ivided by a circular arc swung about a center lying below the heel bottom and has a shoulder to hold the heel part against movement backward from extended osition, and is provided a separable ending means permitting the-disengagement ot' forepart as the heel part slides on the circular cut.

These and other features of the invention, including certain various arrangements and combinations of parts, will be best understood frointhe following description of a preferred embodiment of the invention, selected for urposes of illustration and shown in the rawings in which,

Figure l is a broken-away elevation of the last; i Fig. 2 is a similar View showing the last its initial collapsing movement; v Fig. 3 shows the last parts separated. The-last is divided bytwo circular cuts l0, 12 taken about a last shown, substantially in the tread face of the ball portion. It will be apparent as the description roceeds that this center can esired, since it physically lays-no part in the collapsin of. the last. he two cuts 10, 12 are JoinV by a short the heel part portion thereof overhanging the fcrepart portion.

The bonding means comprises a pin 18 and a hook 20, mounted in the forepart Aand heel pant, respectively, in the last shown. The hook is part by .rivets 22, and extends into a slot in the orepart, across which the pin 18 exhaving the same center le as the cuts 1 0, 12,-when the last is assembl mounted in the reinto abushed hole 28 1n the h n collapsing the lest, a tool 30 may be'used to depress the in 26 and then to pull the heel part orwar The a spring-held pin 26 part and rojectin i ai paathe heel part from the anchored in a slot -in the heel 'los rio

curves 10,

, heel part takes place l2 lie entirely above the center le, end consequently nates .in a' rtlon extendingin a horizontal direction t rough the instep, instead of a nearly vertical portion through' the cone, so that a pronounced forward movement of the I in the colla sing operation. Theheel part will slide eely and easily forward about the center 14, the last shortening from the very beginning of the movement, since the center 14 lies below the heel bottom.. When the hook has risen sufliciently to become disengaged from the pin 18 it disconnects the two last parts and the heel art may be lifted out of the shoe, leavlng the forepart undisturbed. There is no complicated bonding mechanism to stick and cause the. displacement of the tore art in the shoe. The fittings used in the ast shown are exceedingly cheap and simple. The three pins are cut from bar steel and the hook member 2O is e punching.

The shape of thesurfaee 16 locks the heel part positively against backward movement, and also supplies a firm bearing against twisting stresses.

the curve l0 terrin-A miente Having; thus described my invention, what l claim as new and desire to secure yLet ters Patent of the United States is :j

'1. A separable last divided on a, circular arc swung about a center lg'ilill; below the heel bottoniA and havin a s o der to hold the heel part against ackward movement from extended position, ing a reoe with a pin therein, a hook in the heel part extending beneath said shoulder and into the recess in the forepart-for engaging said pin, and a locking pin in one last part engaging the other part to lock said parts against collapsing movement.

2. A separable last divided by two circular arcs swung about a .center lying below the heel bottom and joined by a substantially horizontal cut, the heel part side thereof overhan 'ng the forepart side, and having a pin an hook bondingt means constructed and arranged 'to slide lnto engagement and disengagement las the heell part slideson the circular dividing cut. y

in testimony whereof I have, signed my nameto this speciwtion.

Jenn J. ners. c

the forepart: hav-

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