US12816A - thomisi dabgherty - Google Patents

Description

the outside wedge, see F l, weiem?.

Specicat n` of, Letters Patent Nol.. 12,816, dated May 8i; Y1855.

Erie and.; state, of, invented certain new s in Boot-'Crimpsg dofhereby declared: thatthe same 'are y y d represented in the following ciiication dravvings i. y y

oenable others Skil din the art tomake 1 `mykinventionfI willproceedto deeiryconstruction and use, referring whichthe same letters ine part `eac of the gures.

. y y giire `1`,"is 1an 'elevationofthe crimp with he `vamp `or front-ofl aboot `upon it; ig.` 2, representsasectionnoflFigl l, cutperpen-` icularly through the center. Fig. 3, represectionof `l,c`ut through the line ke a crimp bo the form represented i in thel 4drawing y 'and cut scores in the edge as representedi at B, C and D,[and a groove jin thefedge in the parts l@ IandxlF for the `1 elbow" `.Gfwhich is made of `metalVin the form"represented and perforatedfso as to traverse" freely uponthe screw Handso asto vibrate :upon the nut I which "is rounded where theelbow rests upon it, so

f asto allow it tondo s o with facility. I fasten aperforatedmetal step Jfin the crimpeboard i "inthe positionrepresented and fit the end v of the` shaft" of thescrew into it so as to turnfreely (butVnotwibrate as the elbow `vibratesA upon the nut); The nutI is tted to the screwI-I andprovided with projections t a whichextend peachside of the-elbow Uso as o: forml wo inclined planes lwhich orrespond `withthefinsideof the clasp K; which ClaSp is perforated` so as to traverse freely upon thescrew I-Lalidtheinside of armsyb b' are` scored yasrepresented, so` the leather v.upon the seize andlgri nutas `will bede- I make somefslides L and earms N and O of the elbowGn` so; a totraverse freely, a'ndimake the"formfofthesection of a` y ,iso Ia to correspond with the inside ofjtheclasp P. and Q as representedfthe [arms of `which claspsare scored j upon sametpurpose. `Theshaftof thescrewH is` bent so as to screw. H f

` The` crimp havingb `n constructed and completed as "above described, place the insidefsimilar to K and "for the form" crank R to turn the elbow in the.` bottom of the groove Jin the parts E andF and wetapieceof leathers, g cutlin aproper form for the front of a boot l and place `it upon the boardA and draw the corners downor out `onto the projections a, of the nut I, and hold them and push the clasps K onto themso as to hold or seize `the `corners of theleather andretain them there; whileI slip Vthe slide L `up tothe part E and draw'the edges of theleather onto" it and push theyclasp AI onto them to retain fthem; while `I slip the slide M downto the `part` F and draw the edges ofthe leather` onto it and push the `clasps Q, onto them/to hold them` while I turn' the screw -HMand raise the nut I and elbow G ,which lifts or carries out the slides L and M which slip `upon the arms of the elbow so as to stretch the leather between the clasps I), Q, and K at the same time it is drawn and stretched onto the crimp board. As the screw is turnedto stretch the leather S itslips a little on the nut and slides which are made smooth and draws the clasp on, so thatthe teeth in the inside of the clasps sink into the leather and` hold it firmly; as it draws the tighter the-clasps grip it. If you wish to change the draft upon any part of the leather turn the screw back, so as to loosen it` and change the position of the leather under the clasp or clasps. When the leather is drawn onto the crimp board and stretched as described, it may be fastened with tacks c -TT as represented in the drawings or otherwise, so that the screw, elbow, slides and clasps may be removed and applied to an,- other crimp board or to a series of crim boards in succession of the same or of di ferent sizes.` Thenumber of slidesand "clasps may be increased upon the elbow if desired so as to seize the leather in a greater number of places,and the whole of them operated by turning the screw.

`Most of the boot vcrimps heretofore made careeitherf very expensive or very inconvenient to use, and do the crimping very imperfect-ly, requiring much time and labor to operate them. In the improvements which I have made Il have endeavored to remedy these defects, and I have succeededin the making of` a much better and cheaper apparatus andmone with which the crim ing can be done more perfectly with far ess time `and laborthan has been heretofore required. lBy making the slidesto transverse on the si-ArrsrATsNTOFFICE-1 H SDAUGHERTY, ERIEQPNsYLVANM. y

the leg and foot of the crimp board so as to stretch it uniformly and prevent it from gathering in the instep so as to fold 0r wrinkle as it would otherwise do; full up so as to be thick and stiff and make an uncomfortable boot. By using the same elbow, slides, clasps, etc., for numerous crimp boards of the same or different sizes the apparat-us for stretching a quantity of leather costs far less than any other desirable apparatus for doing the same work.

In those crimps in which the elbow and screw are used, and which have no device to prevent the screw from vibrating with the elbow, if one part of the leather stretches more readily than another, so as to tip orv vibrate the elbow it carries the screw and the corners of the leather one side or the other of the line Z, Z, so as to draw the leather out of its proper shape which makes it cut to waste. I have remedied that defect by arranging my screw so that it can not vibrate: and making the elbow to vibrate upon the nut; so that the corners of the leather are drawn in the direction of the line Z, Z, and in that direction only: So that the leather is stretched, so as not to cut to waste, consequently a smaller pattern will answer for a boot of a given size.

What I claim as my invention and desire to secure by Letters Patent in the above de-

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