US267974A - John a - Google Patents

Description

(ModelL) J. A. GONLEY.

FORMING BUTTONS PROM- VEGETABLE IVORY NUTS.

No. 267,974. Patented Nov. 21 '188Z.

UNITED STATES PATENT OFFICE.-

H. GOLDTHWAIT,

OF SAME PLACE.

FORMING BUTTONS FROM VEGETABLE-IVORY NUTS SPEGIFICATION'forming part of Letters Patent No. 267,974, dated November 21, 1882.

Application filed May 22,1882. (ModeL) To all whom it may concern Be it known that I, JOHN A. GoNLEY, a.

Improvements in Forming Buttons from Vegetable-Ivory Nuts, of which the following is a specification.

This invention relates to an improved method of forming buttons from vegetable-ivory nuts, the object being to provide a method of working said material whereby a button may be produced much larger in size, with perfect front and back and entire surface, than has hitherto been obtainable. i

In the drawings forming part of this'specification, Figure 1 represents a vegetable-ivory nut, full size, from which has been sawed a block from which ,to cut a button. Fig. 2 is a plan view of the block sawed from the nut, Fig. 1. Fig. 3 illustrates a button cut from the block, Fig. 2. Fig. 4. illustrates an ivorynut after the first operation thereon to prepare it to be finished by my improved method. Fig. 5 illustrates a vertical section of the nut, Fig. 4, and an edge view of the button cut therefrom according to my invention; and Fig. 6 is a transverse section of the button shown in Fig. 5.

In the drawings, ais a partially-sawed ivorynut. 11 is a button-block sawed from nut a.

' c is a button cut from block b. cl is an ivorynut having its opposite faces removed.

e is a section of nut d. f is a button cutfrom nut d. a is a section of buttonf.

Hitherto in manufacturing buttons from vegetable-ivory nuts the nuts are sawed to produce blocks similar to b from the surface portions of said nut, and from said blocks the buttons are turned or cut.

It is a well-known fact that, as a rule, all ivory-nuts, and especially those of a large size,

as a, have an internal cavity, as shown in Fig. 1, from which extend numerous cracks toward the surface of the nut, said cavity, in small nuts, being proportionate to the size of the latter, and in only very rare instances is a nut found which is solid and perfect at the core. Owing to the presence of said central cavity in these nuts, as shown in Fig. 1, it is impossible to obtain blocks 12 from the surface thereof of sufficient thickness outside of the radius of the cracks extending from said cavity, or beyond the cavity itself, from which buttons, except of very slight thickness-and moderate dimensions, can be cut to possess perfect unbroken surfaces and surfaces capable of permitting'eyes to be perforated therethrough. Thus in Fig. 3 is illustrated a button, c, of considerablethickness, which, being cut from the blockband the latter from thenut feet and entirely lacking in a continuity of rear surface essential to a perfect button,and, lacking which, affords in itself no means for the requisite formation-of the usual threadeye, made generally by drilling transversely, just under the surface thereof, in the direction indicated by'the dotted lines waiof Fig. 4.

It will be seen that by the above-described old method of cutting and working ivory-nuts for the manufactureot' buttons having a thickness greater than that of the shell of the nut surrounding'said central cavity therein it is impossible to produce any of Said articles in a perfect or useful condition, and independent of a supplementary back toaftord the required relief to the face of. the button as well assupply the eyes; but by my improved process of cutting and working said nuts the abovedescribed difficulties are entirely overcome and a large and perfect button is produced adapted to the thickest fabric, having a smooth and continuous surface provided with strong eyes integral with said button, and of comparativelylight weight, owing to the inclosed cavity, and at consequently a great saving of material and cost of manufacture. In brief, my improved method of forming buttons from ivory-nuts consists in so cutting the button therefrom as to cause the button to inclose centrally within it, or nearly so, the said cavity of the nut, whereby both the front and rear faces of the button are left in a sound and unbroken condition, and the eyes drilled through with eyes drilled through said surface upon said perfect outer surface, as shown at f and one face of the button, substantially as shown 10 n, Figs. 5 and 6. anddescrihed.

Having described my invention What I T 5 claimis I JOHN A. OONLEY.

An improved button formed of vegetable Witnesses: ivory, and consistingof a continuousouter sur- H. A. OHAPIN,

face inclosing the nut -cavity, and provided R. F. HYDE.

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