US411420A - William w - Google Patents

Description

(No Model.)

W. W. BRADLEY. WATCH CASE PENDANT. No. 411,420. Patented Sept, 24, 1889.

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UNITED STATES PATENT OFFICE.

\VILLIAM \V. BRADLEY, OF NEWVPORT, KENTUCKY, ASSIGNOR TO J OllN C. DUEBER, OF SAME PLACE.

WATCH-CASE PENDANT.

SPECIFICATION forming part of Letters Patent No. 411,420, dated September 24, 1889.

Application filed May 6, 1889.

T0 ctZZ whom it may concern.-

Be it known that I, WILLIAM W. BRADLEY, a citizen of the United States. residing at Newport, in the county of Campbell and State of Kentucky, have invented certain new and useful Intrprovements in Watchfiase Pendants; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention consists in providing a watchease pendant with a peculiar combination of devices that enables the push-pin or stem to perform the threefold purpose of winding the watcl1,setting the hands of the same, and operating the case-spring, the details of said devices being hereinafter more fully described, and then pointed out in the claims.

In the annexed drawings, Figure l is an enlarged sectional elevation showing the various members of my watch-case pendant separated from each other. Fig. 2 is an axial section showing said parts fitted within the pendant and the push-pin held in its normal position by the action of the case-spring. Fig. 3 is an enlarged axial section of the springclutch and a modified form of the keeper. Fig. 4: is a section of another modification of my invention.

A represents a portion of the center of a hunting-case watch, and B is a pendant attached thereto, said pendant having at its inner end a smooth bore 0, opening into a screw threaded chamber D, of somewhat larger diameter than said bore, thus forming an annularbearing d in said pendant. The opposite or outer end of said chamberis open, and this end of the pendant is reduced in diameter, so asto form a neck E and an annular shoulder c, said neck having the hollow crown or knob F fitted around it, which knob is screw'threaded internally, as at f, to admit the screw 9 at the outer end of the shank G of the push pin or stem.

h is a rounded or inclined shoulder formed at the junction of said shank with the spindle H of push-pin I, the latter having ashoulder i at its upper end and a similar shoulder t" at its lower end, which latter shoulder t" is $erial No. 309,671. (No model.)

formed where said pin or stem I joins the square arbor K. This arbor traverses a circular eye Z in the free end of the case-spring L, and is arranged to operate either the wind ing or setting mechanism in the usual manner.

Engaged with the screw -threaded chamber D is a hollownut or keeper M, whose bore m is somewhat larger in diameter at top than at bottom, as more clearlyseen in Fig. 3, and the upper end of this nut is nicked or slotted at m m to admit a suitable turning implement. This nut may either bear against the spring-clutch, or it may be coupled thereto; but as seen in Fig. 2 said nut is screwed down until it comes in contact with an annular collar N at the inner end of said clutch O, the latter having a series of longitudinal slots 0 extending from its upper end almost to said collar. Furthermore the inner portion of this clutch is chambered out at I thereby affording an annular shoulderR between said chamber and the spring-prongsp. (See Fig.

\Vhen the various parts of this pendant are properly fitted together and occupy their normal positions, as seen in Fig. 2, the stress of spring L advances the push-pin I and forces its shoulder it against the shoulder R of the clutch, thereby causingthe crown F to recede a slight distance from the shoulder e, in which position of the push-pin the arbor K is in gear with the winding mechanism; but by pushing against the crown untilit strikes the shoulder c the spring L will be bent suiiiciently to liberate the front back of the watch and allow it to fly open, and by properly turning said crown the watch will be wound in the usual manner. This free opening of the case-spring and winding of the watch is due to the fact that the spindle II now occupies the chamber P of the clutch while its prongs surround the shank G, but do not grasp the same. Therefore the opening of the case and winding of the watch can be performed without producing any frictional action of the spring-clutch; but when the hands require setting sufficient force is exerted against the crown F to pull. it forward until the shonldero' comes in contact with the inner end of collar N, which limits the ad- Vance of the push-pin and brings its arbor K into communication with the setting mechanism. This advance or outward pull of the push-pin or stem causes its rounded shoulder h to act as a wedge that gradually opens the clutch-prongs p and allows the spindle H to be grasped by them, as seen in Fig. 4. Consequently the clutch has now a frictional hold around said spindle, and when the pushpin is turned either to the right or left said clutch turns in unison therewith, because it is not engaged with the chamber D; neither is it secured tightly within said chamber by the nut or other keeper M. After the hands have been set sufficient pressure is exerted against the crown F to overcome the grasp of the clutch and force the push pin or stem back to its original position, where it again assumes its normal function of opening the case and winding the watch.

In the modification of my invention seen in Fig. 3 the collar N of the spring-clutch has a rounded edge fitted loosely within an annular groove S of the nut, and said nut is upset or headed at s to retain said collar within said groove; but in the other modification (represented in Fig. 4) the inner end of the crown has an annular flange T, adapted to come in contact with one or morescrews t t, tapped transversely in the pendant-neck.

E, which screws serve as stops to prevent the push-pin being pulled bodily out of the pendant. These screws serve also to confine a tubular keeper U within the unthreaded chamber of the pendant, said keeper having at its inner end an annular flange u, that bears upon av set of Washers V, the latter being interposed between said flange and the clutch-collar N.

From the above description it is evident these modifications include the leading features of my invention-that is to say, they show a longitudinally-shiftable push-pin that operates the case-spring and winding and setting mechanism, a spring-clutch which grasps said stem, so as to revolve in unison therewith, but incapable of sliding either in or out,

unison therewith when the stem is advanced and engaged with the hand-setting mechanism, a keeper that prevents longitudinal sliding of said clutch, and a stop that limits the outward pull of said stem, substantially as herein described.

2. A watch-case pendant, as B, having a screw-threaded chamber D and bearing d, in

spring-clutch N O 0 P p R, having its collar N fitted loosely within the annular groove S of the tubular nut M m, and secured therein by upsetting said nut at s, for the purpose described.

4. The combination of an interiorly-threaded watch-case pendant, a nut engaged with said thread and having an upwardly-flaring bore, a spring-clutch held in place by said nut, so as to be free to revolve,but incapable of longitudinal shift-ing, and a shouldered stem that slides within said spring-clutch, for the purpose herein described.

In testimony whereof I afiix my signature in presence of two witnesses. I

WILLIAM WV. BRADLEY.

Witnesses:

JAMES H. LAYMAN, SAML. S. CARPENTER.

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