US470298A - Watch-regulator - Google Patents

Description

(No Modem E. 'KLAHN WATCH REGULATOR.

No. 470,298. Patented Mar. 8, 1.892.

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EMIL KLAI'IN, OF JERSEY CITY, NEV JERSEY, ASSIGNOR TO TI-IE WATER- BURY WATCH COMPANY, OF IYATERBURY, CONNECTICUT.

WATCH- REG U LATO R.

SPECIFICATION forming part of Letters Patent No. 470,298, dated March 8, 1892.

Application iiled May 4,1891. Serial No. 391,533. (No model.)

To all whom it may concern.-

Be it known that I, EMIL KLAHN, a citizen of the United States, and a resident of Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Regulators for Vatches, of which the following is a specification.

My invention relates to improvements in regulators for watches; and the object of my invention is to obtain a regulator the arm of which can be always placed in the middle of the balance-bridge after the movement has been regulated by shifting the regulator-arm to the right or left hand side of the bridge. I attain this object by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a plan view of a balance-bridge with my improved regulator, and Fig 2 is a side view of the same partly in section.

Similar letters of reference indicate corresponding parts.

A in the drawings, represents the balancebridge, which has a disk-shaped upwardlyprojecting portion a and a lateral lug a, to which the outer end of the hair-spring B is fastened.

C is the ring-shaped regulator, the inner circumference of which is conically-shaped, so as to lit into a corresponding` groove in the outer circumference of the disk-shaped projection a of the bridge, as shown in Fig. 2.

The ring-shaped regulator is spring-acting and presses against the disk-shaped portion d. ofthe bridge. A part of the hair-spring passes through an eye on the rear side of a radial arm c of the regulator-ring C, as in an ordinary watch-movement employing a hairspring and a lever-regulator. Through the portion o of the bridge, out of the center of the same, a circular hole is bored, a part of the circumference of which projects over the outer circumference of the disk-shaped portion a', as shown in Fig. .1. In this hole a downwardly-projecting pin d on one end of the regulator-arm D is inserted, which may be secured to the under side of the bridge in any reliable manner, so as to be prevented from being removed from the bridge. The pin d is provided with a groove of the same shape of that of the disk-shaped portion a', so as to likewise correspond with the conical inner circumference of the regulator-ring. Of course the latter may have another shape; but the grooves of the disk-shaped portion of the bridge and of the pin have to correspond with the shape of the inner circumference of the regulator-ring. Then it is desired to increase or decrease the speed of the move- 6o ment the free end of the lever D is shifted to the right or left hand side. The downwardly-eXtending pin d on the other end of the lever corresponds with the inner circumference of the regulator-ringand turns the same simultaneously in the same direction, so that the hair-spring, passing through the eye in the rear side of the radial arm c of the regulater-ring, is lengthened orshortened. When the speed of the movement has thus been 7o regulated, the radial arm c is taken hold of by pinchers and the free end of the lever shifted back until it is placed in the middle of the bridge. This is done without moving` the regulator-ring, as the same and the pin of the lever communicate only by friction, which is interrupted by stopping the radial arm d.

By the mechanism described the regulatorlever can be easily placed in the middle of So the bridge and the indicator-scale of the same, so that the so-called timing of the spring is greatlyv facilitated, which is necessary before a watch is placed on sale.

Having thus described my invent-ion, I claim as new and desire to secure by Letters Patent- In a regulator for watches, the combination of the regulator-arm having on one end a downwardlyextending pin, which is pro- 9c vided with a groove and passes through a disk-shaped upwardly-extendiug portion oi' the bridge out of the center of the same, with the regulator-ring pressing against the said disk-shaped portion of the bridge, and having its inner circumference of such a shape as to correspond with the groove of the pin and to engage with the same by friction, substantially as set forth.

Signed at New York, in the county of New roo York and State of New York, this 21st day of April, A. D. 1891.

EMIL KLAHN.

Witnesses:

CHARLEs Kani), Louis B. HAsBnoUcK.

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