US149760A

US149760A - John kay

Info

Publication number: US149760A
Authority: US
Publication date: 1874-04-14
Anticipated expiration: 1891-04-14

Description

KAY.

Roller Ahstractors for Lever Watches.

Patented April 14; 1874.

Wifiwgms'.

XX /ZM,

JOHN KAY, OF INDIANAPOLIS, INDIANA.

IMPROVEMENT IN ROLLER-ABSTRACTERS FOR LEVER-WATCHES.

Specification forming part of Letters Patent No. 149.760, dated April 14, 1874; application filed January 28, 1874.

To all whom it may concern:

Be it known that I, JOHN KAY, of the city of Indianapolis, county of Marion, State of Indiana, have invented a Itoller-Abstracter for Lever-\Vatches, of which the following is a specification the parts attached to the staff.

Every watch-maker knows the extreme diffi culty there is in taking the roller oif the staff without injuring; either balance-wheel, roller,

or staii, or loosenin g the staff in the balance wheel. Especially is this true in a compensating balance; and in many Swiss lever-watches the roller is placed so close. down to the hub of the balance that it makes it even more difficult to take the roller off without injury to the watch. WVith my roller-abstracter, no matter how awkwardly the roller is set, or how tight it is fastened to the staff, it comes ofi' easily and safely.

In the accompanying drawings, Figure l is a perspective elevation of my roller-abstracter, shown in connection with the staff, roller, &c. Fig. 2 is a sectional elevation of the same.

A is the body of the abstracter, made of any suitable material and shape, 'and having a hole drilled longitudinally through it. The upper part of the hole is smaller in diameter,and forms the nut in which the screw B works. To the lower end of B is attached, by a swiveljoint, b, the sliding spindle O, fitting closely the larger parallel hole drilled in A. The lower part or nipple of G is made smaller in diameter and tapering, the extreme end having a shallow conical hole sunk in its center to receive the end of thewatch-staff. This nipple can either be made solid with the spindle O or detachable. D D are springlegs fastened to A at the top, and having feet 01 turned in, as shown, and shaped to fit under the roller. The legs D can be adjusted to suit different diameters of staff and rollers by the screw E and nut e, an elongated slot, 0, being cut in G to allow the spindle to work up and down without interfering with the screw E. f is the watchstaff, to which is attached the roller F and balance-wheel G.

The operation of my abstracter can be best described by referring to the drawings. The abstracter is shown there as adjusted ready to force the staff through the roller. One or two turnson the screwB is sufficient, and the roller is detached, leaving the balance-wheel on the staff intact. By having a hollow nipple to re ceive the staff, and placing the feet to clamp the lower end of the staff, my abstracter can also be used to force the roller on. By lowering the nipple 0, it would carry before it the roller F to any point desired, the spindle rising within the nipple.

I claim as my invention 1. The adjustable spring-legs D, with inverted feet 01, in combination with the sliding adjustable spindle 0, moving between, and independently of, the said spring-legs, substantially as specified.

2. The sliding spindle C, with slot 0 and solid or detachable nipple 0, working within the guide out in A, the screw B, and swivelpoint 1), working within the guide and nut in A, in combination with the adjustable spring legs D, with feet (1, the screw E, and nut 6, arranged substantially as described, and for the purpose specified.

JOHN KAY. Witnesses:

HUG-H P. STEWART, J AMES H. FISHER.