US1240174A - Last. - Google Patents

Description

MJBROCK,

LAST.

APPLICATION FILED AUG-14.1912.

Patented Sept. 18, 1912.

To all whom it may concern I will be hereinafter 4 more A UNITED-STATES raru rrc MATTHIAS BROOK, OF 'ItOXBURY, MA$SACHUSETTS, ASSIGNOR TO' UNITED SHOE MACHINERY COMPANY, OF ZPATEBSON; NEW J EIBSEY, A CORPORATION OF NEW JERSEY.

Be it known that I, MATTHIAS BROOK, a citizen of the United States, residing at RoXbury, in the county of Suffolk andflCommonwealth of Massachusetts, have invented certain Improvements'in Lasts, of. which the following description, in connection with the accompanying drawings, is a specification, like reference characters onthe drawings indicating like parts in the several figures. I i V This invention relates to lasts and particularly to lasts of that type in which the fore and heel parts are movably connected soj that the last may bebroken topermit it to'be inserted in, or removed from, a shoe, and maybe held in extendedcondition while in the shoe; 7 An important-feature of the invention: is

comprised in a simple and eflicientlock to hold the last against movement when' in' eX- tended condition so that relative movement of theparts will be prevented under the usual strains to which theshoe issub jected during the shoe making operations, but which lock may be caused to yield to permit the last to be broken by a simple manipulation. Y

'In the illustrated embodiment 'ofthe in vention the improved lock is shownapplied to a last in which the fore and heel parts are hingedly connected, and the lockis, shown as comprising a spring which is fastened at one end to one member of the last'and v at its opposite, or free end bearsyieldingly against the other member and is recurved at said end to engage a curved recess in such member when the last is extended. When the last is broken the free end of. the spring is held yieldingly against one of theadjacent Surfaces of the last members and; thereby serves .to frictionally maintainthelast in its shortened, or broken condition.

Other features oftheinvention. are come prised incertain important details ofconstruction and combinations of parts which y particularly described and claimed. 1 In the drawings: Y 7 Figure l is a side. elevation of a last, with parts broken away, embodying. the present invention; and

Fig. 2 is a plan view. of the last. 7 The fore part 2 of the last is shown as having a vert cal bQre in its ttom t LAST.

' V Specification of Letters Patent. Patented Sept, 18, 1917.

Application filed August 14. 1912. Serial No. 715,052.

ceive a plug 6, and a vertical, longitudinal "saw kerf extends through the lower portion and upwardly a suitable distance in said fore part and to the rear extremity thereof to receive a'hinge plate, the forward end of the plate enteringa kerf in the plug 6 Saidend is pivotally connected to the plug by a pin 10 which is inserted through transverse, alined bores in the fore part and.

vature is at the hinge'pin 10, and the heel part has its forward face curved to agree with the curvature 'ofthe surface 12, as shown, so that when the last parts are broken the heel part will swing about the hinge pin 10 from the position shown in full lines to that shown-in dotted lines in Fig. 1, the adjacent curved surfaces sliding relatively in the direction of their curvature.

The fore part 2 is shown .as being cut out in its rearfaceto provide an inclined groove 16 whichis located by the side of the kerf forreceiving the plate8 and progressively increases indepth rearwardly, from its uppei-Qto its. lower extremity. A locking member, herein shown as a leaf spring .18, and which may be of tempered steel or other suitable materi al,is secured at its upper end by a screw 18, orother suitable means, in the groove. 16 and extends downwardly and rearwardly at an inclination to said groove, the free end ofthe spring: being preferably re-curved or bent as shown at 20. The bent end 20 is designed to be forced by the resilient action of the spring into a curved recess22, formed in the adjacent forward face of the heel part, whenv the last is in extended condition, as shown in Fig.1, and

come until sufficient force is applied to crowd 1.3,!)

tionshownby-dotted lines in 1. Upon continuing the movement of the heel part to break the last the free end of the spring;

will be held in yielding engagement with thatportion otthe forward curved surface of the heel part immediately below the recess 22 and will thus act to frictionally hold thelast parts in broken condition untll a force is" eXerted Isufiicient: to overcome the frictional iresistance ofiered "by the spring tended condition.

Conveniently, the recess 22 to receive the bent end of the' locking spring may be "formedfby boring a holethrough the last parts which will be intersectedby the line of'separation of said parts so-thatapproximately one'half of the hole cwill be formed ;in each section of the last, as shown inFig. 2." This constructionfacilitates the manui'actu're of theselasts in large quantities. I

In 'order toproper'ly limit the'movement .of'the last parts into extended position the hinge plate 8 is provijded'atjits lower edge with ,a notch 24 which is arranged to engage a suitable stop 26,,herein shown as a rivet whichpasses through the :fore part at a pointlintersecting the lower portion of the kerf which contains the Jhinge-plate'S. The

riveto26'thus in. addition to serving as a stop, acts to brace the fore part and holds it against spreading'laterally.

I From-the foregoingit is believed'thatthe operation of, the last and the advantages which follow "from'its use will be apparent without further description, The right is hereby reserved to make such changes in the fforin, arrangement, and structural details of the several parts as 'arecomprehendedby the scope of the following claims. I Having thus described my'invention, what I claim as new and fdesire'to secure by Letters Patent of the United States is:

l. A last comprising ajfore .part and a heelpart-movably connected, a spring rigidly secured to one of said parts and extendinginwardly of the last snbstantially parallel to the direction of the relative moveextending spring rigidlysecured'to. one of saidparts and having "its free endupwardly recurved, and the other part'ha-ving' a recess shaped to be engaged [by the recurved end of the spring forholdingthe last in extend ed condition,-the edge of'the recess reacting 2 against the spring substantially in the direction of; its radius' of curvature atithe p oint -;e. :e0ntae c v 3. A last comprising a fore partand heel interior of thelast ,tobeengaged bythe recnrved end ofltlie spring holding the c. j i l extended. condition. when the parts are moved agam into e);-

I fl. Aflast comprising [fore and heelparts rmovably connected together, .a spring r se cured to said part and its remaining por- I t1on extending downwardly Ililfearwardly t0W r t e th r; pa t and' having a recu red end, andthe other part 'having a recess. formed with a curved wall 'toge nga'ge said end, thebodyjportion ofSaid spring lying substantially in the line of relativemovement of saidlast parts whenltheylast is ex- 100 tended. I I I I I I I I 16. Alast comprising a fore part;lravi ng,a

vertically inclined groove, a spring "in said groove having one end secured ,to said fore part andits remaining p'ortion sfree, eXtend- ,05

mg rearwardly and-terminating in an ,abutmerit, and a ,heel part pivotally connected with saiditorepart and 'havingja recess to receive saidfabntment for'holding the last in extended. condition, said spring being .a'daptedto 'fr'ictiona'lly engage said heel part outside of said recess forholdingthe last parts against relative "movement" when in collapsed condition. I w a L 7; A last comprising one part having a groove therein and a spring having ionelend secured in saidgroove andextending toward the other partlandterminating' in a rec'urved 7 portion, and a second i p art connected with the first parhsaid last-parts having a'curved line, of divisionwhich formsabutting surfaces in sliding engagement and having alsoa transverse bore circular in cross -;section which is intersected by saidline of division, apart of said bore forming-a recess inone of the last partsjfor'receivingthe recurved endoi"? the spring to lock t'he'pa-rts in extended condition. 1

8. A last comprising one part having a spring rigidly securedthereto at one .end

and having its opposite end recurved, and a second part hingedly connected with the first part, said parts having a curved line of division which forms abutting surfaces in sliding engagement, said second part having a recess curved to correspond with said recurved end, the parts being so arranged that when the last is extended the spring lies substantially parallel with the line of relative movement of the parts to thereby resist such movement.

9. A last comprising one part having a spring rigidly secured thereto at one end and having its opposite end recurved, and a second part hingedly secured to the first part, said parts'having a curved line of division forming abutting surfaces in sliding contact, said second part having a recess curved to correspond with the recurved end "of said spring, said end being adapted to I MATTHIAS BROOK.

Witnesses:

JOHN H. MGCREADY, HARLoW M. DAVIS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of ratents, Washington, D. 0.

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