US43230A - Improvement in clocks - Google Patents

Description

UNITED STATES PATENT OFFICE.

CHRYSOSTOMUS SOHVVIPPL, OF NEW YORK, N. Y.

IMPROVEMENT IN CLOCKS.

Specification forming part of Letters Patent No. 43,230, dated June 21, 1864.

To all whom it may concern: I

Be it known that I, GHEYsosToMUs ScnwIPrL, of the city, county, and State of New York, have invented a new and useful 1 Improvement in Clocks; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming 3 part of this specification, in which- Figure 1 represents a face view of my inl vention, and Fig. 2 a vertical central section of the same.

Similar letters of reference indicate correl sponding parts in both figures.

This invention consists in suspending from the pivot on which the hands of a clock revolve two movements, connected to said hands by suitable gear-wheels in such a manner that by the action of the movements the hands are caused to traverse the dial, and that by the weightor gravity of said movements the hands are retained in their successive positions and 1 enabled to resume the same spontaneously, in 3 case they are disturbed by some external in- 1 fluence.

To enable those skilled in the art to make 1 and use my invention, 1 will proceed to describe its construction and operation, with reference to the drawings.

The two hands A A revolve perfectly free and easy on the horizontal pivot a, which is firmly inserted into the center of the dial, or into a wall or other convenient place to which the dial may be secured. The two ends of; each hand are perfectly balanced, so that said hands can be turned in either direction with out the expenditure of more power than is necessary to overcome the friction on the pivot, and that they for themselves will be in equilibrium in any position which they may assume while rotating on said pivot. Each hand is moved by a separate movement, B and B, respectively, the movement B being connected to the hand A by means of the cogwheels I) c, and the hand A to the movement B by the pinion b and cog-wheel c. The} cog-wheel c is firmly secured to the body of the hand A, and it turns freely with the same on the pivot a. It is geared up with the movement B in such a manner that it, together with the hand A, makes one revolution in one i hour. In the same manner the cog-wheel c is i firmly secured to the body of the hand A, l and it is geared up with the movement in such a manner that it, together with the hand A,

what I claim as new, and

makes one revolution in twelve hours. The hand A,therefore,represents the minute-hand, and the hand A the hour-hand of the clock. The movements B B are suspended freely i from the pivot a at points somewhat distant from their respective centers of gravity, and when left to follow their gravity said centers of gravity will always place themselves in vertical lines drawn through the center of the pivot to. The movements, therefore, unless they are disturbed by some external force,

will retain their position, and as the cog-wheel b and pinion b are rotated by the action of the movement, the hands A A assume a rotary motion around the pivot a, and if the position 1 of either of the hands is disturbed by some external force said hand, impelled by the gravity of the movement, will spontaneously return to its proper position as soon as the exteznal force ceases to act upon it. From each movement an index, d d, rises in a vertical direction, and as the hands move round small dials c e, marked on the central parts of the bodies of said hands, traverse under said indices. The dial 0 is marked with figures 5, 10, 15, and so on, to 60, indicating the minutes, and it serves to set the minute-hand A, and the dial 0 is marked with figures from 1 to 12. indicating the hours, and it serves to set the hour-hand, the setting in each case being effected by inserting an ordinary key in the central square of the movement and turning from right to left until the index points to the desired figure. The principal advantage of this arrangement is that with movements of very small dimensions-such as ordinary watch-movementshands of considerable length can be set in motion, and that the hands do not allow of being set back or ahead without opening the cover of the central dialplate and inserting a suitable key in the central square of the movement.

Having thus fully described my invention, desire to secure by Letters Patent, is

The arrangement and combination of the hands A A, central pivot, a, suspended movements B B, and gear-wheels b 0 b c, all constructed and operating substantially in the manner and for the purpose shown and described.

OHRYSOSTOMUS SCHWIPPL. Vitnesses:

J. F. BUoKLEr, W. HAUFF.

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