US256938A

US256938A - Clock pendulums

Info

Publication number: US256938A
Authority: US
Publication date: 1882-04-25
Anticipated expiration: 1899-04-25

Description

(No Model.)

J. W. WILLIAMS. MECHANISM FOR. REGULATING OLOGK PENDULUMS. No. 256,938. Patented Apr.25, 1882.

a WITNESSES: a

Rm. WW.

UNITED STATES PATENT OFFICE.

JOHN FIVILLIAMS, OF NEW YORK, N. Y.

MECHANISM FOR REGULATING CLOCK-PENDULUMS.

SPECIFICATION forming part of Letters Patent No. 256,938, dated April 25, 1882.

(No model.)

To all whom it may concern Be it known that I, JOHN V. \VILLIAMS, of the city, county, and State of New York, have invented certain new and useful Improvements in Mechanisms for Regulating Clock-Pendulums, of which the following is a specification.

This invention has reference to an improved mechanism for regulating the pcndulums of clocks from the central arbor ofthe same; and

the invention consists of a pinion placed upon the central arbor back of the dial and provided with an arm which passes along the socket of the hour-hand to the front part or" the dial, the pinion meshing with a guided rack-piece which carries the movable stud of the pendulum-rod, so as to adjust the same toward or away from the upper fixed stud of the same.

In the accompanyingdrawings, Figure 1 represents a front view with my improved pend ulum-regulating mechanism. Fig. 2 is a detail front view of the regulating mechanism with the dial removed, and Fig. 3 is a vertical transverse section of the same on line w m, Fig. 2.

Similar letters of reference imlicate corresponding parts.

Ain the drawings represents the central arbor ot' a common clock-movement, the latter being provided with an escapcment-wheel and anchor at the upper part of the dial, in the nature of French clocks.

Upon the central arbor, A, back of the dial, is placed a loosely-turning pinion or toothed segment, B, which is retained in position on the front part of the movement and provided with a fixed arm, (I, which extends along the socket of the hour-hand to a point above the dial-plate, where it is bent outwardly, so as to form a kind of handle or pointer, whereby the pinion may be turned around the arbor. The

pinion B meshes with a rack-piece, O, which is guided by longitudinal slots 0 on fixed studs 6' of the front plate of the clock-movement,

the rack-piececarrying at the lower part a slotted stud, f, which moves vertically toward or away from the fixed upper stud,f, of the pendulum-rod D. The movable stud f is split so as to engage the flattened upper end of the pendulum-rod.

By means of the fixed arm (I of the pinion B the movable stud f of the pendulum rod may be adjusted toward or away from the fixed stud Z) of the upper end of the pendulumrod, and thereby the length'ot' stroke of the pendulum increased or decreased without adjusting the ball on the pendulum-rod, as now customary in this class of clocks. Asmall graduated scale may be arranged on the dial below the end of the pointer (I, so as to facilitate the adjustment of the pendulum to any desired degree required. By this means an easily-operated and simple attachment for common clock-movements is provided, which permits the adjustment of the pendulum so as to regulate the length of the stroke to a nicety in a more convenient manner than by adjusting the ball, and at less expense than by the bevel-gear and screw adjustment of French clocks.

Having thus described my invention, I claim I as new and desire to secure by Letters Patent- As an improvement in clocks, the combination, with the center arbor, of an axially-turning pinion or toothed segment having a fixed pointer-arm bent over the dial, with a verti' cally sliding and guided rack carrying a spli. movable stud, and with a pendulumrod suspended from a fixed stud above the movable stud, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

JOHN IV. \VILLIAMS.

Witnesses:

PAUL GOEPEL, CARL KARI.