US320127A

US320127A - Dust-proof case for watches

Info

Publication number: US320127A
Authority: US
Publication date: 1885-06-16
Anticipated expiration: 1902-06-16

Description

(No Model.)

0. K. GILES.

DUST PROOF UASE FOR WATCHES.

No. 320,127. Patented June 16, 1885.

UNITED STATES PATENT OFFICE.

CHARLES K. GILES, OF CHICAGO, ILLINOIS.

DUST-PROOF CASE FOR WATCHES.

SPECIFICATION forming part of Letters Patent No. 320,127, dated June 16, 1885.

(No model.)

To all whom, it near/y concern.-

Be it known that I, CHARLES K. GILES, a citizen of the United States, and residing at Ohicago, In the county of Cook and State of Illinois, have invented certain new and useful Improvements in Dust-Proof Boxes and Cases for Watches, which are fully set forth in the following specification, reference being had to the accompanying drawings, in which Figure 1 is a plan view of my device. Fig. 2 is a cross-section of the same on the line .00 x of Fig. 1, and on an enlarged scale; and Fig. 3 is a view, on the same scale, of the box detached, a portion being broken away to show the construction.

My invention relates to certain improvements in the construction and arrangement of boxes and cases for watches, as will be hereinafter described, and specifically pointed out in the claim; and the object thereofis to protect the movement from dust, &c., and at the same time render it easy of access.

As shown in the drawings, the box or inner case, A, for the reception of the movement, is composed of the band a and back cap, I), the former being screw-threaded on the 'interior of its lower portion to receive the correspondingly-threaded portion of the latter. The outer edge of the cap is flush with the outer surface of the band, thus forming a smooth and continuous surface therewith.

The bezel O, to receive the crystal 0, .is formed in one piece with or permanently attached to the band a, which is further provided with an inwardly-projecting flange, 13, for the purpose hereinafter stated.

Ihe case B consists of the center (Z, back plate, 6, and front ring, f. The center (I is provided at its upper inner edge with a rabbet,

g, in which fits a corresponding shoulder, h, formed on the band a in any suitable manner.

In using my improvement the movement is first placed within the boX A, the cap I) having been removed for that purpose. The said cap is then screwed down, thus securing the movement by clamping it against the flange i, and the box A is then placed within the case B, the shoulder h resting on the rabbet 1, and the whole being held in place by the front ring, f, which closes over the edge of the bezel, as shown in Fig. 2. The wind ing-stem passes through the case and box and into the movement, thereby preventing these parts from turning within their surrounding parts.

Although I have shown my invention applied to a stem-winding watch, it is evident that it may be equally well applied to a keywinding watch.

By the above-described construction I obtain a practically dust-proof case, and at the same time the box A, containing the movement, can readily be removed or replaced for inspection, shipment, or other purposes.

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

The box A, composed of the two parts a and b, secured together by threaded sections, as described, in combination with the ring-center at, front ring, f, and back plate, 0, all constructed and operating together substantially as and for the purposes set forth.

CHARLES K. GILES.

\Vitnesses:

J. V. RIDGWAY, J. L. HARDIE.