US329849A - oliver - Google Patents

Description

(Mode1.) 2 Sheets-Sheet 1.

H. W. OLIVER.

DIAL FOR TIME PIECES.

No. 329,849. Patented NOV. 3, 1885..

WITNESSES: INVENTOR:

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(ModeL) 2 Sheets-Sheet 2.

H. W. OLIVER.

DIAL FOR TIME PIECES,

No. 329,849. Patented Nov. 3, 1885.

my. a 22 w WITNESSES IN'VENTOR WWW/v ATTORNEYS.

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V UNITED STATES PATENT OFFICE.

HENRY W. OLIVER, OF NEW YORK, N. Y.

DIAL FOR TIM E-PIECES.

I SPECIFICATION forming part of Letters Patent No. 329,849, dated November 3, 1885.

Application filed February 9, 1835. Serial No. 155,317.

To all whom it may concern:

Be it known that I, HENRY W. OLIVER, of the city, county, and State of New York, have invented certain new and useful Improvements in Dials for Time-Pieces, of which the follow ing is a full, clear, and exact description.

This invention consists in a compound dial of novel construction, and in certain automatic attachments connected therewith for indicating standard time in clocks, watches, and other time-pieces, substantially as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 represents a face view of a compound clock-dial embodying my invention, with a central portion of the outer one of the two dials of which it is composed broken away for the purpose of exhibiting certain automatic shifting mechanism of the outer dial in position when said dial has been shifted to exposethe hours running from 1 to 12. Fig. 2 is a like View of like parts when the outer dial has been shifted to expose the hours running from 13 to 24. Fig. 3 is an inside or back View of i the outer dial detached,with its attached shiftslides.

ing devices; and Fig. 4, a face View of the inner dial, showing also certain appliances that operate in connection with the attached shifting devices of the outer dial. Fig. 5 is a section on the line or x in Fig. 7, showing the inner dial-plate, as seen from the rear, and certain spring-slides connected therewith, whichengage with the shifting devices on the outer dial, also showing a cam for operating said Fig. 6 is a front View of a plate at the back of the inner dial, showing also the cam and gear for operating the spring-slides. Fig. 7 is a transverse section, on the line y 3 in Fig. 1, of the compound dial, with its attachments and clock-frame. Fig. 8 is a section, upon a larger scale on the line z 2111 Fig. 3, of certain of the automatic outer-dial-shifting devices; and Fig. 9, a section of the same on the line 10 v win Fig. 8.

(Modch) or has connected with it an outer ring or series of shields, B, arranged to project within the numerals on said main fixed dial that represent the hours running from 13 to 21.

C is an outer or movable dial concentric with the main dial, and having hour-divisions on it ranging and numbered from 1 to 12, also having apertures Z) in it between its numerals, which apertures, when uncovered, expose the numerals on the plain dial A, but which,when under cover of the overlapping shields B, cause the numerals on the movable dial 0 only to be exposed. These two adjustments of the movable dial 0 and changed exposures of the numerals on the compound dial are clearly shown in Figs. 1 and 2 of the drawings. The movable dial 0 is supported upon a center pivot or by means of a sleeve, 0, so as to freely turn on the barrel (2 of the hour-hand e.

D is the central arbor, upon which the minute-hand f is secured. The minute or other intermediate divisions are arranged on the fixed or main dialAand the stationary shields B or outside of the same.

E is the frame of the clock-movement.

To indicate standard time by means of this compound dial, the movable dial 0 is turned or set, so as to expose the numerals on it from 1 to 12, and to conceal the numerals ranging from 13 to 24 on the main or fixed dial A, the apertures b in the movable dial then being under cover of the shields B. After the time has run for the first twelve hours of the day, the movable dial 0 is then turned back to bring its numerals under cover of the overlapping shields B and to expose through its apertures b the numerals ranging from 13 to 24 on the main or fixed dial A. This is done automatically by the working of the timepiece, and preferably by the means substauand the back of each incline g, slightly contracting in width toward the outer end of each incline, beyond which the springs h project. A cross-groove, 7a, is made in the rear side of this device G, immediately under the base of each incline g. This groove is open at its one end to the slot 2', which extends below or inwardly beyond the incline, and at its opposite end, at the foot of the incline, is also open. Furthermore, each of these grooves is fitted with a spring, Z, extending mainly throughout its length and having its free end terminate'at or near the back of each incline 9, said spring flexing toward and from the dial.

H H are two independent radial slides, arranged to lie in recesses m in the back of the main or fixed dial A, or between said dial and a plate, it. These slides are pressed inward by spiral springs 0, arranged around them, and are each provided with a laterally-projecting pin or stud, 8. These pins control the device G, and said springslides H H are alternately forced outward by a cam, I, on the sleeve 0, which sleeve carries a geanwheel, J ,that is connected with the clock mechanism in any suitable way, so as, with its attached cam I, only to revolve once while the hour-hand barrel d makes two revolutions. Supposing the compound dial to be set as shown in Fig. 1, exposing the first twelve hours of the day on the movable dial C shortly before the hour hand or pointer e arrives over the numeral 12 on said dial, the cam I acts upon the one spring-slide H to move it outward, and so that the stud s on said slide travels outward in the one sloti over the apex of the one incline g, the spring h adjacent to said incline being slightly pressed backward in such action and afterwardthat is, so soon as said studs passesthe apex of the adjacent incline r recoiling and by its pressure on the one side of the stud, which then is unsupported on its opposite side bythe straight back of the incline, causing the device G to be started in its rocking movement sufiicient to bring the face or sloping side of the incline under or within said studs, so that in the recoil of the spring 0 of said slide to fully throw or rock the device G, by the travel of the stud inward in a straightline or course over the sloping face of the incline, said stud is prevented, on startingitsinward movement, from returning down the slot z from which it had passed out, and is therefore compelled to move down the face of the incline until it reaches the groove It on the same side of the axis of the dial, and passes at its inner end onto or over the root end of the spring Z at the same end of the device G. This moves the device G and its attached dial 0 to shift it to the left, as shown in Fig. 2, exposing the numerals on the main dial ranging from 13 to 24, and concealing under the shields B the numerals on the movable dial 0, ranging from 1 to 12. After the clock has run the next succeeding twelve hours, the cam I, revolving only once for each two revolutions of the hourhand, acts upon the other spring-slide H to move it outward, and by its stud 8, controlled in like manner by the adjacent spring h, and acting, as itis drawn inward, upon the adjacent incline g, and passing into the groove k, over the spring Z pertaining to said incline, causes the device G and its attached dial 0 to be moved to the right. again, as shown in Fig. 1,

causing the numerals ranging from 1 to 12 to be exposed again, and the numerals on the main or fixed dial A to be concealed. In this intermittent oscillating movement of the de .vice G and its attached dial Gthat is, one

movement during each twelve hoursthe spri'ngsl are each alternately,once in twentyfour hours, pressed inward by their travel against or back of the stndss till each stud in succession iscleared by itsrespective spring Z, andis brought into position against its spring h for the cam I to act upon its slide H to force outward said slide again for action as before. The object of the springs Z is that, after they have successively cleared the studs 8, they will serve to lock the device G and dial 0 in their adjusted posit-ions, and so prevent a back or recoil movement thereof, and to hold the dcviee G in its proper position for the stud s, first of the one slide II and then of the other, to travel in the slot t in which it moves when the slide is forced outward by the cam I, as hereinbefore described.

It should be borne in mind that the studs 8 on i v the straight sliding devices H travel over the back and sloping sides of the inclines g to rock the device G; and when either one of said studs reaches the groove 7; at the base of the incline it rests on the root end of the spring Z in said groove, and when the device G is rocked in a reverse direction said spring is flexed inward by the passage of the spring over and back of the bearing end of the stud till the free end of the spring clears the stud when the spring flexes outward again and so locks the device G and dial 0 in their adj usted positions by the free end of said spring taking its position on the side of the stud, as

shown in Fig. 9 of the drawings.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A compound dial for timepieces for indicating standard time, composed of a main inner stationary dial having one set of numerals indicating the hourly divisions for one half of the day, stationary shields arranged to cover the intermediate spaces between said inclines g on its opposite ends on opposite sides of the axis of the dial, spring-slides H H, arranged to independently act upon said inclines, and means, substantially as specified, for automatically and successively operating said slides once in twelve hours, as and for the purposes herein set forth.

3. The shifting device G of the movable dial, having inclines you its outer ends, and provided with springs h, arranged to project beyond said inclines and to leave outwardlycontracting slots ibetween them and the back of the inclines, in combination with the independent springslides H H, having attached studs or projections s, for operation together essentially as and for the purpose herein set forth.

4. The locking-springs Z, in combination with the dial-shifting device G, constructed for operation substantially as described, and the independent spring-slidesHH, constructed to engage with said shifting device, substantially as and for the purposes set forth.

5. The combination, with the dial-shifting device G, of the attached springs h and Z, essentially as and for the purposes described.

6. A compound dial for time-pieces for indicating standard time in which is combined a main stationary dial having overlapping shields between its numerals, a concentric backwardly and forwardly moving dial having apertures between its numerals and arranged to work between the shields and the main dial, a shifting device, substantially as described, for intermittently oscillating the movable dial, and means, substantially as described, for automatically operating the dialshifter in reverse directions each succeeding twelve hours of the day, essentially as specified.

HENRY W. OLIVER.

WVitnesses:

A. GREGORY, C. SnDGwIoK.

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