US364109A

US364109A - George e

Info

Publication number: US364109A
Authority: US
Priority date: 1886-09-06
Filing date: 1886-09-06
Publication date: 1887-05-31
Anticipated expiration: 1904-05-31

Description

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(No Model.)

WATCH DIAL.

No. 364,109. Patented May 31, 1887.

UNITED STATES PATENT OFFICEa GEORGE E. HART, OF WATERBURY, CONNECTICUT, ASSIGNOR ro THE WATERBURY WATCH COMPANY, OF SAME PLACE.

WATCH-DAL.

SPECIPICATION forming part of Letters Patent No. 364.109, dated May 31, 1887.

Application filed Setcnber 6, 1886. Serial No. 212.832.

-To all whom it may concern:

Be it known that I, GEORGE E. I-IART, of Waterbury, in the county of New Haven, and in the State of Connecticut, have invented certain new and useful Improvements in \Vatch- Dials; and I do hereby declare that the following isa full, clear, and exact description thereof, reference being had to the accomp`anying drawings, in which- Figure 1 is a perspective View of my dial and dial-plate before the Same are united. Figs. 2 and 3 are like views of opposite sides of the same when combined. Fig. 4 is a perspective view of a watch-movement adapted to receive said parts. Fig. 5 is a like view of the same after said dial and its plate have been placed in position, and Fig. 6 is a section upon line a' x of Fig. 5.

Letters of like name and kind refer to like parts in each of the figures.

In the manufacture of watches 'it has heretofore been customary to employ enameled dials which are manufactured as a specialty, and are each provided with two or more rearward-projecting studs or feet that pass into corresponding openingsin the front plate of a watchmovement and serve to secure the dial in place thereon; but in the fitting of such dials to place material differenccs are -ordinarily found in the positions of the feet with relation to each other and to the central opening of the dial, and in such cases it becomes necessary to bend one or all of the feet, in order that they may fit into their openings and that the dial may be centrally located, the result being that frequent breakagcs occur and the en'amel becomes' cracked at the point where a foot is secured to the metal base of the dial. Another difficulty arises from the usual irregularity of the rear face of the dial, in consequence of which the distance between the same and the movement-plates varies, so that the dial-wheels must be specially fitted to each dial, in order that they may have the necessary amount of endshake.

To obviate these difficulties is the design of my invention, which consists, principally, as a means for combining an enameled or porcelain dial with a watch-movement, in a metal plate which is cemented upon the back side of the dial and is fitted to and adapted to be se- (No model.)

cnred upon the movement-plate, substantially as and for the purpose hereinafter specified It consists, further, as an improvement 1n watches,in combining with an enameled or porcelain dial a metal plate whichis secured to or i to the front side of said dial-plate,substantially as and for the purpose hereinafter set forth.

It consists, finally, as an improvement in watches, in the combination of an enameled or porcelain dial, a metal plate which is secured upon its rear face, and a front movement-plate that is adaptedto receive said dial-'plate and to i have the same attached thereto, substantially as and for the purpose hereinafter shown and described.

In the carrying of ny invention into practice I cmploy a dial, A, which is preferably made by enameling with porcelain a disk of copper, but may be entirely composed of porcelain, if desired. Said dial is made plain that is, without the feet that are usually provided upon its rear face, but in other respects resembles the ordinary dial.

Cemented upon or secu red to the back of the dial A is a nctal plate, B, which, preferably, has a somewhat greater diameter, so that its edge projects beyond the edge of said dial, and has its outer face recessed to receive the latter, as shown. Said plate has a plain real.- face, and is fitted over and adapted to be in- ,posed upon the outer face of the front move- -The dial-plate B is fitted to the movementplate O before the dial A is secured in place; but as the last-named operation in no nanner changes the form of said dial-plate the distance between its inner face and the bottom of the recess c' for the dial-wheels remains the same, so that dial-wheels made therefor and having a predetermined amount of end-shake will always fit to place without change.

The hollow arbors of the minute and hour wheels will of course project to a grcater or less distance through the dial if the latter is thinner or thicker than the average; but such variations will be readily conpensated by the hubs of the hands, which hubs have sufficient length to enable said hands to be adj usted lcngthwise of said hollow arbors as much as may be required in order to insure the proper position of the former with relation to the face of said dial, precisely as would bc the case were a dial of ordinary Construction used. This Construction also enables the dial to be readil y located so as to bring its axial opening into an absolutely central position-an operation which is very difficult with the ordinary form of dial.

Having thus described my invcntion, what I claim is-=- 1. As a means for eombining a vitrified, cnamcled, or porcelain dial with a watch-movement, a metal plate which is eemented upon the back side of the dial and is fittcd to and adapted to be secured upon the movementplate, substantially as and for the purpose specified. 7

lain dial, a metal plate which is secured to or upon its rear face and is adapted to be fittcd .over and attached to the movenent-plate of a watch, substantially as and for the purpose shown.

3. As an improvement in watches, a dialplate which is fittcd over and adapted to be secured upon the movement-plate of a watch, in combination with said movement-plate and with a vitrified, enameled, or porcelain dial that is cemented upon or attaehcd to the front side of said dial-plate, substantially as and for the purpose set forth.

4. As an' improvement in watches, the eom bination of a vitrificd, enameled, or porcelain dial, a metal plate which is secured upon its rear face, and a front novement-plate that is adapted to receive saiddial-plate and to lavc the same attachcd thcreto, substantiall y as and for the purpose shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this 11th day of August, 1886.

GEORGE E. IIART.

witnesses:

GEO. S. PRINDLE, E. L. BRONSON.