US267824A - Watch-hands - Google Patents

Description

(No Model.)

' J. W. BELL.

WATCH HANDS.

No. 267,824. Patented Nov. 21, 1882.

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WITNESSES ATTORNEYS.

NY PEYERS Phom-Lnhognpban Washington. a. c.

UNITED STATES PATENT OFFICE.

WATCH-HANDS.

SPECIFICATIONforming part of Letters Patent No. 267,824, dated November 21, 1882.

Application filed May 25, 1882. (No model.)

To all whom it may concern Be it known that I, J OHN WETHERED BELL, of Oonowingo, in the county of Cecil and State of Maryland, have invented a new and useful Improvement in- Watch-Hands; and I do hereby declare that the following is a full, clear, and exact description of the same, reference beinghad totheaccompanyingdrawings,forming part of this specification.

My invention relates to an improvement in watch-hands, designed to enable the wearer to see at a glance the difl'erent times of the place he is leaving and the place which constitutes his destinatiomorto enable him with one watch to keep both standard andlocal time. The value to the traveling public of such afdevice is'apparent in thefacility which it aifords for making connections between trains run by different times, as well as in keeping appointments between ditferent cities. Some eliorts to provide such a device have been made heretofore, as shown, for instance, in the expired patent to Hall, No. 47,06 5, granted March 28, 1865, and others of a lfr date, in which patent two hands werecoupled so as to move together in thenormal action of the watch, but still have an independent adjustment with respectto each other to point to different figures on the dial indicating the different times of different places. Myinvention,whilelooking to substantially the same result, provides a more simple and practical construction for uniting the two hands; and it consists in turning a groove upon the hub of'one hand, and providing the other hand with a split spring-ring which is sprung into said groove, and which by its elasticity preserves a constant and uniform frictional coir tact with the other hand, that always maintains its proper relation during the normal movement of the hands, but still permits an adjustment between them to adapt them to point to different times when it becomes necessary to adjust them to the longitude of different places.

In the drawings, Figure l is a view of the supplemental hour-hand. Fig. 2 is a sectional a watch provided with my improvement.

In carrying out my invention I take the or dinary hour-hand, A, as provided with a hub, b, fitting the hour-hand sleeve, and cut in it a groove, 0, and into the groove I spring, by reason of the split or opening a, the ring portion of the supplemental hand A. The ordinary minute-hanthB, having perforated boss (I, I groove in a similar way, and spring into this groove the split ring of the supplemental minute-hand B by virtue of the opening I). It will thus be seen that the supplemental minute-handB and the supplemental hounhand A will be held to the ordinary hands, A and B, by a frictional contact, and when placed upon the arbors of the watch the two hands of such pair will movetogether and maintain the same relative angular position, one hand ofeach pair indicating one time and the other another. If the time is to be changed, the supplemental handsare set to a new angular adjustment. In fastening on the supplemental hand I may make the groove 0 either a round groove, as in Figs. 2 and 3, or an angular groove, as in Figs. 6 and 7, the latter being preferred for the reason that the frictional contact is more perfect.

Though having greatest value for watches or portable time-pieces, my invention is also applicable to clocks and all kinds of time-pieces.

If desired, the hands of the same division of time may be turned into exact registration, so as to show but two hands on the face of the watch.

In defining my invention more clearly with respect to the prior state of the art, I would state that I am aware that a split ring is not broadly new in its application to other uses, and I do not claim it separately.

Having thus described my invention, what I claim as new is- The combination of a pairof coupled hands, one of which has a peripheral groove with inclined sides out around its hub, and the othera splitspring'ring sprung into the groove and around the hub for the purpose of prcserving a constant frictional contact between thetwo and maintaininga definite angular relation beween the hands for correctly indicating the ditierences in time, as set forth.

JOHN Wl-l'llll'lltlil) lilllill. lVitnesses:

SoLoN O. KEMoN, JOHN T. LAWRENCE.

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