US372558A - Watch-case - Google Patents

Description

l(No Model.) 2 Sheets-Sheet 1.

G. F. MORRILL. WATCH GASP..

No. 372,558. Patented Nov.. 1, 1887'.

(No Mmm.) 2'sheets-sheet 2 C. F. MORRILL.

WATCH CASE. No. 372,558. Patented Nov. l, 1887.

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UNITED STATES PATENT. OFFICE., l

CHARLES F. MORRILL, OF BOSTON, MASSACHUSETTS.

WATCH-CASE.

SPECIFICATION forming pari: of Letters Patent No. 372,558, lated November l, 1887.

Application filed May 7, 1887. Serial No. 237,424. (No model.)

T0 all whom it may concern/.-

Be it known that I, CHARLES F. MORRILL, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Watch Gases, of which the following is a specification.

This invention relates to watch cases in which the back, bezel, and like separable parts are connected by screw-threads with the casecenter; and it consists in certain improvements, hereinafter described, in the construction of this class of cases.

Of the accompanying drawings, forming a part of this specitication, Figure l represents a side elevation of a portion of the center of my improved case. Fig. 2 represents an enlarged section on line 2 2, Fig. l. Fig. 3 represents a side elevation of the ring which constitutes the threaded shoulder engaging the ease-back. Fig. 4 represents a section on line 4 4, Fig. 3. Fig. 5 represents a side View of the ring which constitutes the threaded shoulder engaging the bezel. Fig. 6 represents a section on line 6 G, Fig. 5. Fig. 7 represents a section ofthe three parts shown in the preceding figures connected and forming the caseeenter. Fig. 8 represents a side view of the core or ring which is applied to the back or bezel. Fig. 9 represents a section on line 9 9, Fig. 8. Fig. 10 represents a sectional view of a portion ot' the bezel. sectional view of a portion of the back. Fig. l2 represents a side elevation of the complete case. Fig. 13 represents a section on line 13 13, Fig. 12.

The same letters of reference indicate the same parts in all the figures.

In carrying out my invention I construct the case-center in three general parts, 2 3 4, the part 2 being the central or body portion and having two internally-threaded shoulders or ianges, c b, and inwardly-projecting seats .sz s2 at the bases of said shoulders. The parts 3 4 are externally-threaded rings adapted to be screwed into the internal threads of the shoulders ab, said parts or rings 3 4 being wider than the threaded surfaces of the shoulders a b, so that they project outside of said shoulders,.as shown in Fig. 7, their outer portions constituting externally-threaded shoulders to engage theinternally-lhreaded portions Fig. 1l represents a' of the back c and bezel d, while their inner edges bear against the seats s? s2.

The rings 3 4 are prevented from turning by l -tion of the back or bezel when said parts are so engraved or ornamented as to require that certain parts be in line with the pendant. In screw-cases the threads ot' the baekand casecenter sometimes become worn, so that eventually the back, when screwed to place, will not have its ornamentation correctly located with reference to the pendant. By making the threaded shoulders of the case-center adjustable, as described, I entirely overcome this objection.

It will be seen that the described construction of the case-center, besides affording the very desirable adj ustability of the threaded shoulders above described, also enables said shoulders to be made ot' a harder metal than that of the main portion 2 ot the case-center, thus making the construction more durable; and they have the advantage of being removable from the main portion ofthe case-center,

so that they may bereplaced by new rings if Y their threads become unserviceable from wear. There being two rings, each removable inde pendently, one can be removed without disturbing the other, when only one ring becomes unservieeable.

In further carrying out my invention T provide the bezel d with a ring or core, 7, internally threaded and placcdin theangle formed within the margin of the bezel, as shown in Fig. 10, the bezel being formed over said ring or core by any suitable means.

The internallythreaded surface of the ring or core 7 is formed to screw onto the threaded exterior ofthe ring 4 ofthe case-center. The inwardly-projecting lip or flange l0 of the bezel terminates in a shoulder, 8, which does not extend inwardly so far as the threaded inner surface of the ring or core 7, and is formed to it closely against the outer side of the flange or shoulder b ofthe case-center, so that thejoint between the bezel and case'eenter is roo rendered tight and secure both by the elose 'tit of the shoulder S on the [lange band by the engagement ot' the threaded inner` surface of the ring or eore 7 with the threaded outersurface oi' the ring 4.

rllhe bael; e is provided with a ring or core, 7, similar in all essential particulars to the core 7 ofthe bezel and threaded to screw onto the ring a ofthe ease-renter. The back also has a shoulder, S, formed to lit closely against the outer surlaee of the ilange a of the easecenter.

rlhe cores 7 7 may be prevented troni turningin the back and bezel by screws s, as shown in Fig. 13.

It will be seen Ithat the cores 7 may be adjusted like the rings 3 4 ot` the easeeenter, and, like said rings, may be made ol' a harder material.

My invention is not limited to the conjoint use ot' the rings 3 t and eores 7 7, as the threaded portions ofthe back and bezel may be made integral therewith, as usual, instead ot'being formed on separate pieces or Cores; or the baelz and bezel,provided with the cores 7 7, may be engaged with serew threaded shoulders, formed, as usual, on the body ot' the easeleenter instead ol' on separable rings.

lt will be seen that the shoulders S 8 on the back and bezel and the shoulders or ilanges a b on the ease-center, eo operating with the shoulders S 8, hold the back and bezel in plaee laterally and prevent them l'roni slipping or wabbling edgewise while the screw-threads ot' the back and bezel are being engaged with those ofthe case-renter.

I claim l. A watch-ease center composed ofa body having an internally-threaded tlange or shout.

tachable to and detachable troni said body, as set forth.

3. Awateh-ease center composed of the body having the externally smooth and internallythreaded shoulders or tlanges a b, theinwardl yprojecting seats s`l s2, and the externallythreaded rings 3 4, screwed into said shoulders and p rejecting outside thereof, as set forth.

4. In a watch ease, the center composed ofthe hotly having an externally smooth and internally-threaded shoulder or llange, as a, and an externallythreaded ring, as 3, eonr bined with a back or bezel having an internal screw-thread adapted to engage with the said eXternallythreade-d ring, and a shoulder, 8, formed to tit the external surlaee ofthe shoulder or flange a, as set forth.

5. ln a watelrease, the center Composed of the body having the externally smooth and the interually-threaded shoulders or [langes a b, and the externally-threaded rings 8 it, conibined with the back c and bezel d, internally serewvthreaded and adapted to engage with said rings, and provided with shoulders 8 8, formed to lit the external surlaoes ofthe shoulders a b, as set forth.

6. A wateh easebaek or bezel provided willi an annular internally*threaded ring or eore, secured to the margin et the back or bezel and bearing against its inner surface, as set l'orth.

7. A watch-ease back or bezel provided with an annular internally-threaded core and with a shoulder, as S, outside ot' the threaded sur- 'aee of said core, as set l'orth.

8. A watch-ease composed ofthe three part ease-center, constructed as described, and the back and bezel each provided with an internally-threaded eore and a shoulder outside of the threaded surface of said eore and adapted to engage the ease-Center, as set forth.

ln testimony whereoi'l have signed my name to this speeilieatioinin the presence of two subscribing witnesses, this 5th day ol' May, A. D. 1887.

CHARLES F. HORRILL.

Vitnesses:

C. F. BROWN, A. D. I-LiRnisoN.

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