US731244A - Clock-pendulum. - Google Patents

Description

PATENTED JUNE 16, 1903.

W. H. THOMPSON.

' cnocx PENDULUM. APPLICATION FILED JULY 15, 1902.

no MODEL.

Mu V UNITED STATES;

Patented June 16, 1903.

PATE T @FFICE.

CLOCK-PENDULUM.

SPECIFICATION forming part of Letters Patent N 0. 731,244, dated June 16, 1903. Application tiled 31113 15, 1902. seatin 115,630. 'iNo model.)

To (Ml whom it may concern: 7 r Beit known that 1, WILLIAM H. THOMPSON, a citizen of the United States,.residing at Beckley,county of Raleiglnand state of West Virginia, have invented certain new and useful Improvements in Olock-Pendulums', of which the following is a specification. Y

This invention relates to clocks, and more especially to the pendulum; and the object thereof is to provide a more simple and perfeet regulator and to do away with the incessant ticking due to the parts of the escapement mechanism comingin contact wit-h each other, which is very annoying to some people.

Afurther object is to provide a novel means ofadjusting the pendulum without the neces: sity of stopping the clock.

The invention resides in the novel features,

combinations, and adaptations of the several parts, which will be more fully set forth in the specification and recited in the appended claims, reference being had to the drawings, in which Figure 1 is a vertical section of the clock, omitting part of the works for the sake of clearness and showing the pendulum attached; Fig. 2, a top plan view with pendulum omitted; Fig. 3, a detail of the bracket and bearings of the worm-screw; Fig. 4,a, detail of the leading-bar and pendulum-bob, and Fig. 5 a perspective of the adjustment of the pendulum-cord.

To the back of the frame- 1 is detachably and adj ustably secured a bracket 2, which is bent at right angles at 3'and extends inwardly toward the front of the clock, forming a bearing for an adjusting-piece 4, carrying the bearing-socket 5, in which the lower end of the worm-screw 6 is journaled. Just above the right-angular bend 3 the bracket is provided with ears or lugs 7 7,'.having downwardly-inclined slots 8 8, which permit the adjustment of the bracket. The upper part of the bracket'is extended for a short distance above the framework and is then bent at right angles to form a support for the bearing 9, in which is journaled the upper end of the worm-screw 6. The worm-screw 6 has a shoulder 10, which abuts against the bottom of the bearing 9 and prevents it from rising out of its lower bearing 5. Passing through the bearing is an elongation of the wormscrew, and secured to the top thereof is a horizontal balance-bar 11, having at one end a counterbalance-weight 12 and at the other end a ball-and-socket joint 13. In gear with the clock-train is a toothed wheel 23, which meshes with the worm-screw 6 and gives the several parts of the pendulum motion.

Located in the top of the clock-case in nearly vertical alinement with the wormscrew is a block 14, to which is attached a U- shaped bracket 15, bent downward at its forward end to forma bearing forone end of a winding-d rum 16. The other end of the drum is supported in a ing 17, which is rigidly secured to the bracket.

Attached at one end to the winding-drum is a silk cord 18, which passes up through an aperture 19 in the bracket between the lug 17 and'the downwardly-bent portion. From the aperture the cord passes over and down through the out-out portion of the bracket, which forms'theU shape spoken of previously.

Attached to the lower end of the cord 18 is the pendulum-bob 20, which has on its lower end the ball-and-socket joint 21. Connected to the ball-and-socket joint is a leading-bar 22, which assists the pendulum in its giratory or planetary movement.

In operation-the clock must be perfectly level, so that the pendulum-bob 20 hangs in perfect vertical alinement with the wormscrew 6. When the clockis started, the horizontal balance-bar 11 travels in a rotary direction from right to left, as indicated by the arrow in Fig. 2, and carries with it or pulls the leading-bar 22 and the pendulum-bob 20 after it, as shown in dotted lines 'in Fig. 2. The bob is raised or lowered by means of the winding-drum, thus regulating the speed of the clock. Turning to the rightshortens the cord and increases the speed, and of course just the opposite willdecrease the speed.

Having thus described my invention, what I claim as new, and desire to secure by'Letters Patent, is V 1., In aclock, the combination with a wormscrew adapted to be driven by the clock-train, of a rotary balance-bar central-1y secured to the end ofthe worm-screw and having a weight on one end, a freely-suspended pew ears on said bracket, slots in said ears whereby said bracket is adjusted with relation to said rotating means, and an adjusting-piece on said bracket whereby the worm-screw is adjusted. 7 r

In testimony whereof I hereunto aflix: my signature in presence of two witnesses. 1

WILLIAM H. THOMPSON. Witnesses: i

HU A. DUNN, A. C. HALL.

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