US933041A - Locking-last. - Google Patents

Description

PATENT ormoni."

.HENRY F. LoEwEB, or Roemenen, Nnwlonx.

LocmNmLAsT.

p speeiaeamn Leners Patent. Patented Aug'i, 1909.

Application led Decemberil, 1907. i Serial Komm.-

To all lwhom 'it may concern:

-Be it known that I, HENRY F. Lonwnn, a citizen ofthe United States, and a resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Locking- Lasts, of which the following is a specication.

rl `his invention relates to locking lasts, in which the heel block moves with reference to the remainder of the last on a plane inclined downwardly and forwardly from the bottom of the last so as to permit its removal from the shoe with a greater ease. The parts are adapted to be locked in the osition in which the last fills the shoe. The lock is actuated by 4any suitable means, such as the insertion of a jack post and the ordinary jack post socket. The invention consists in the apparatus-hereinafter dcribed and claimed.

y In the drawings Figure l is a vertical longitudinal section through a last embodying this invention, and shows the block in.

the normalposition inwhich the last fills the shoe; Fig. 2'is a similar lsection, but

showing the Aparts unlocked and in the -position in which the last may be removed from the shoe; and Fig. 3 is a perspective view of the lockin leverwith its Spring. l

In the dgra'wings, 1 is the toesportion of a `last having its rear. surface inclined. forwardly fromv the bottom of .the last'. The heel block 2 has a front surface litt' 'the 'said rear surface of the toe portion, an said two surfaces 3 are incllned forwardly, as-

f above described with reference to the bot- `tom of the last. VOne of the two parts, preferably the toe part, carries a plate 4 rigidly fastened thereto,- and projecting vfrom the rear vsurface above described. This plate.

. rests in a slot 5' in the heel. block which fits said plate. The plate has a slot 6. parallel to the surfaces 3, and a pin' I rigidly fastened in the heel block 2 passes through said slot and holds the heel block, and toe part together, and at the Sametime limits the movement ofv one uponithe other. The slotv i '5 has a lateral extension 8 which connects with the jack post socket 9, and in this lateral extension is pivoted the swinging lock-V ing. doglO. A pin 11 rigidly fastened in the heel blockl passes'through an aperture in said dog, and pivots it in said extension 8,

which is preferablv' in the same plane with jection or tooth 12, and carries aspring 13 that 1s fastened to said dog, and when the part-s are in place the spring rests against the rear edge of the plate 4 and is held under tension against the edge of said plate. The plate 4 has a depression 14, shown most clearly in Fig. 2, constituting an abutment with which the 4tooth or` projection 12 engages to "lock the parts in the position shown in Fig. l.v In this position of the parts, the tail- 15 of the dog 10 projects into the side of the jack post socket 9. It will be seen that 'when the parts are inl lthe position shownin Fig. 1, the heel block 2 and toe part l are rigidly locked together,` so that they cannot move upon each other, and that they are held in the position in which the last lits the shoe and formsl a last of substantially the ordinary solid form. If the lastis to be removed. from the shoe, an un. locking p'in 16, Fig. 2, (which may be the jackpost itself)- is inserted into the jack post socket, and in so doing strikes-the tail 15 of the dog I0 and tilts said dog, thereby removing its tooth or projection. 12 Eromthe` The apparatus is easy to manufacture and to assemble. The toe part is manufactured,-l

cornplete, 'and aslot is made in its rear Surface into which the plate 4 1s lnserted, `and is fastenedetherein in any suitable way, as

by the transverse pins 17. The .heel block is manufactured with its jack post socket 9, and' with the slot 5 and its extension 8 c onnecting with said jack post socket. Thetransverse holes for the pins 7 and 11 are drilled withthe aid of suitable, jigs.. Then the dog 10 is set in place, and its pin 1I, is .I

inserted; then the toe part is applied to the heel block with the projecting portion of the plate 4 extendinginto the slot, 5 opposite to the dog 10, thusv compressing the spring'13 to the proper degree when thezsurfaces 3 are in contact; then the pin 7 is inserted in place through the slot- 6, and the last is completed. Of course, the dog 10l ice may be made of materialof substantlally the same thick-ness as the plate 4, and theslot' with its extension 8 may be of the same width to fit the plate 4 and the dog 10.

What l claim` is: A two-part'last lnlvingl sliding contact surf'es on the parts with reference to the 4botixfm of the las'tand ti'ansverse te the length of the last, one part being a heelblock having a jack-post. socketad a slot n-its cont-act surfacevertical tothe' bottom 'of .the '1a St;f il Connecting late attached the toeart and having a s ot palalle-l to the heel-block and. the s abutment and pivte in the heel-Block' and having a partgprojecting into the side of the jack-po'stsoeket; whereby when the last is suppo'rtedv On't-he jack-post, the latch is held l15 with the 'side of the jack-post. l v HENRY F. LOEWER;

outof engagement .with the plate by contactl Witnesses:

GURNEE, 1,1. THON.

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