US37526A - Improvement in patterns for cutting boots - Google Patents

Description

plate A. These movable UNITED STATES PATENT EErcE.

ELIAS SHOPBELL, OF ASHLAND, OHIO.

IMPROVEMENT IN PATTERNS FOR CUTTING BOOTS.

Specification forming part of Letters Patent No. 37,526, dated January 27, 1863.

.To all whom z' may concern.:

Be it known that I, ELIAS SHOPBELL, of Ashland, in the county of Ashland and State of Ohio, have invented new and useful Im- ;provements in Patterns for Cutting Boots;

and I do hereby declare that the following is a full and complete description of the same, reference being had to the accompanying drawings, making part of this specification, in which- Figure 1 is a top view of the pattern contracted to its smallest size. Fig. 2 is a top view of the same extended to its largest size, and Fig. 3 is an edge view.

The nature ot' my invention relates to the combination of several plates, of such form and in such a manner that when thus combined form a boot-pattern that can be adjusted at one operation to any required size by means of the simultaneous and proportional extension ot' thc several movable parts, which are all secured to a center plate by slots, headed pins, and thumb-screw, the width oi' the pa-ttern varying in different parts as the extension takes place-in other words, varying unequally, for reasons hereinafter stated.

The pattern is composed of seven plates, one of which is stationary and is marked A, the other six being in pairs, as seen at B B', U C', and D D', and are in all respects duplicates of each other, with the single exception of theirreversed position.

The stationary plate A is seventeen inches long, eight and one-halt' inches wide at the in` step, ve and one-halfinches Wide at the ankle, and six inches wide at the top; but the size may be varied so long as the same proportions are preserved. Its general outline is shown in Fig. 1.

The adjustable platesB B', C C', and D D', when contracted to their smallest limits, have their outer margins coincide nearly with the plates are all provided with slots running at various angles in relation to the baseline X X. Headed pins pass through these slots, with one exceptionthe thumbscrew-and secure the moving pltes to the stationary plates and to each ot er.

The various angles of the slots govern theproportional extension of the movable plates, and they are so secured to each other as to move only in concert. The whole are secured in any desired position by a thumb-screw, E. A scale, F, ranging from 1 to 11, marks the size of the pattern.

I will now proceed to describe the position and angle ot' the slots that work upon the pins attached to the stationary plate A. Theslots G G' are situated near the upperand outer corners ot' the'plates B B', and have respectively an angle upward and outward of thirtyfour degrees, and slide upon the stationaryv pins g g'. The slots H H' are situated at the opposite end ofthe plates B B', and have an angle upward and outward ot' thirty degrees, and slide upon the pins l1, It'. lhe plates C C' have slots I l' at their upper ends, having their angles downward and outward ten degrees, and move upon the pins i i'. The slots J J' are situated at the widest part ot' the pattern, and have their inclination ontward and downward at an angle of seventylive degrees. The plates D D' have slots K K' at their upper ends, having their angles downward and outward ten degrees. 'Ihey slide upon the thumb-screw E. L' are situated at the lower end or toe of the pattern, and have an angle downward and outward ot' eight degrees, and move upon the pin l.

ln addition to the slots that work upon the stationary pins, as above described, the-movable plates have other slots which work upon pins in the corresponding fellow-plate, as follows: At the top of the plate B is a slot, M, situated at rightangles to the line X X, and works upon the pin min the plate B'. At the lower end ot' the plates B B' are slots N N', inclining upward and outward at an angle of three degrees, and slide upon the pins n n' in the plates C C'. The plates D D' have slots O O' situated at the outer angle, and inclining inward toward the toe at an angle of thirty-seven degrees, and slide upon pins o o' in the plates C C'. At the toe of the plate D' is a slot, P, situated at right angles to the base-line X X, and slides upon the pin p in the plate D.

In extending this pattern from the smallest to the largest size, as marked upon the scale F, the expansion in diderent parts is unequalthat is, while the instep expands two inches in width, the lower part of the leg or ankle expands but one and one-half inches, and the top of the leg one and three-quarters inches7 and in the yvhole length ofthe pattern the extension is tti-*ree and one-half inches. It Will thus be observed that this disproportional scale of extension is due to the peculiar angles ofthe several slots, and it follows therefrom that a small boot is out proportionally larger in the leg than the larger sizes, and this difterence is upon a regular scale-in other words, the plates will move proportionally so as to give depth to the instep, making the fxont Wider across the-instep from corner to corner, and leaving the leg smaller in proportion as the boot is cut larger, and in contracting the pattern to boys7 size, the leg is out proportionably larger in the leg than mens sizes, which is a necessary condition in order to tit both thejuvenile and mature leg and foot;

their respective angles has been the result of much study and experiment7 and I believe the results are the production of the most perfect pattern that has ever been constructed.

I am aware that extension-patterns have been before devised and constructed, but none that I have ever seen that produce the gradual and proportional changes that are produced in my pattern. rlhese variations from other patterns, though small they may be, are nevertheless important; therefore,

What I claim as my improvement, and dcsire to secure by Letters Patent7 is- The plate A, in combination with the pairs of plates B B', C Cf, and D D', with their respective slots and angles, producing the si multaneous movement ot the several pairs of plates, and the consequent unequal enlargement and contraction ot' the pattern, substantially as herein set forth.

ELIAS SHOPBELL. Witnesses:

W. H. BURRIDGE, SAMUEL HUFFM'AN.

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