Connect public, paid and private patent data with Google Patents Public Datasets

Waterproof watchcase

Download PDF

Info

Publication number
US2302340A
US2302340A US41453541A US2302340A US 2302340 A US2302340 A US 2302340A US 41453541 A US41453541 A US 41453541A US 2302340 A US2302340 A US 2302340A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
bezel
case
flange
center
rim
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Morf Ernest
Original Assignee
Morf Ernest
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00Cases
    • G04B37/08Hermetic sealing of openings, joints, passages or slits
    • G04B37/081Complete encasings for wrist or pocket watches also comprising means for hermetic sealing of the winding stem and crown
    • G04B37/082Complete encasings for wrist or pocket watches also comprising means for hermetic sealing of the winding stem and crown without special hermetic sealing pieces

Description

Nov. 17, 1942. E. MORF 2,302,340

WATERPROOF WATCH-CASE Filed Oct. 10, 1941 2, e O -31- O Patented Nov. 17, 1942 UNITED STATES PATENT QFFICE Application October 10, 1941, Serial No. 414,535 In Switzerland October 31, 1940 2 Claims.

The present invention relates to improvements in watch-cases and has for its principal object to provide a watch-case which is simple, efficient, economical to manufacture, durable and highly satisfactory in preventing dust, moisture and other matter from entering the case.

Another object of my invention is to reduce to a minimum the number of parts necessary in the construction of waterproof watch-cases and more particularly to omit the usual resilient packing rings, the hermetical fit being obtained by the crystal itself and the parts of the watchcase according to my invention being constructed so as to permit the same to be readily and easily assembled or disassembled without weakening the tightness of the connection between the parts of the case.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the accompanying drawing wherein like numerals indicate like parts throughout the several views of the same,

Fig. 1 is a vertical sectional view of the watchcase entirely assembled.

Fig. 2 is a sectional view of the combined bezel and center.

Fig. 3 is a sectional view of the crystal.

Fig. 4 is a sectional view of the back.

The case is shown as being round in shape, but it will be understood that the invention is just as well applicable to watches of any other shape.

In the drawing l designates the back of the watch-case having an annular rim 2 extending perpendicularly to the plane of the watch movement and being adapted to receive and hold said movement which is inserted from the front of the case. This annular rim 2 is prolonged by an upward extending annular flange 3, the external diameter of which is somewhat smaller than the external diameter of the rim 2 so as to manage an external abutment shoulder 2' on said run.

The crystal 4 of slightly compressible material such as transparent polyacrilic or polyvinylic resin has a tubular flange 5 adapted to engage the periphery of the flange 3 of the back.

The combined bezel and center 6, l is made in 6' so that it rests upon the abutment shoulder 2' of the rim 2 when the combined bezel and center 6, I is held in assembled position. The internal surface of the case band 1 is of substantially the same size as the external surface of the rim 2 of the back. The relative diameters of the bezel 6 and the flanges 5 and 3 are such that, when the combined bezel and center is held in place, the flange 5 of the crystal will be squeezed and compressed against the flange 3 of the back just strongly enough to provide a perfectly tight joint without injuring the specific compressibility of the material of which the crystal is made.

The combined bezel and center 6, l is provided with bracelet holding lugs 8, which lugs can be formed as an integral part of said bezel and center or suitably attached thereto, as desired to form a rigid unit.

A bore 9 is provided in the rim 2 of the back for the Winding stem, and for the same purpose a notch I0 is also cut out in the case-band 1 of the combined bezel and center.

It will thus be seen from the foregoing description that the number of parts necessary for the construction of this waterproof watch-case is reduced to three and that other means than the compressible flange of the crystal itself are not necessary for clamping the back and the combined bezel and center together and thus for efficiently preventing the entrance of water through the connection therebetween.

What I claim is:

1. In a watertight watch case, a back including a rim perpendicular to the plane of the movement and a flange perpendicular to the plane of the movement, extending from the free end of said rim, a center comprising a bezel and a caseband, the latter surrounding said rim, a groove of rectangular cross section between said flange and said bezel and perpendicular to the plane of the movement, and a crystal made of slightly compressible material ending in a tubular flange pressed into and filling up said groove to clamp said back and said center watertightly together.

2. In a Watertight watch case, a back including a rim perpendicular to the plane of the movement and a flange perpendicular to the plane of the movement extending from the free end of said rim and a shoulder on said free end and outside said flange, a center comprising a bezel and a case band, the latter surrounding said rim, said bezel having an abutment surface in engagement with said shoulder, a groove of rectangular cross section between said flange and said bezel and perpendicular to the plane of the movement, and a crystal made of sligthly compressible material ending in a tubular flange pressed into and filling wholly up said groove and with its free end making contact with said shoulder to clamp said back and said center watertightly together.

ERNEST MORF.

US2302340A 1940-10-31 1941-10-10 Waterproof watchcase Expired - Lifetime US2302340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH2302340X 1940-10-31

Publications (1)

Publication Number Publication Date
US2302340A true US2302340A (en) 1942-11-17

Family

ID=4568467

Family Applications (1)

Application Number Title Priority Date Filing Date
US2302340A Expired - Lifetime US2302340A (en) 1940-10-31 1941-10-10 Waterproof watchcase

Country Status (1)

Country Link
US (1) US2302340A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446603A (en) * 1944-10-23 1948-08-10 Morf Ernest Watertight watchcase
US2565396A (en) * 1944-09-16 1951-08-21 Schmitz Werner Waterproof quadrilateral watchcase
US2589902A (en) * 1944-05-02 1952-03-18 Vaurillon Emile Watertight watchcase
US2682146A (en) * 1947-08-01 1954-06-29 Theresia M Wachter Waterproof watch
US2831315A (en) * 1954-09-08 1958-04-22 Piquerez Ervin Fluid-tight watch provided with an automatic winding-up system and key setting stem
US2871654A (en) * 1954-04-14 1959-02-03 Bulova Watch Co Inc Waterproof watch-case

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2589902A (en) * 1944-05-02 1952-03-18 Vaurillon Emile Watertight watchcase
US2565396A (en) * 1944-09-16 1951-08-21 Schmitz Werner Waterproof quadrilateral watchcase
US2446603A (en) * 1944-10-23 1948-08-10 Morf Ernest Watertight watchcase
US2682146A (en) * 1947-08-01 1954-06-29 Theresia M Wachter Waterproof watch
US2871654A (en) * 1954-04-14 1959-02-03 Bulova Watch Co Inc Waterproof watch-case
US2831315A (en) * 1954-09-08 1958-04-22 Piquerez Ervin Fluid-tight watch provided with an automatic winding-up system and key setting stem

Similar Documents

Publication Publication Date Title
US2219277A (en) Mounting for watchcases
US6762976B1 (en) Wristwatch case
US4291401A (en) Device for securing a watch dial to a watch-movement plate
US4993007A (en) Method for assembling a watch case
US4089158A (en) Fluid-tight winding button assembly
US2249550A (en) Wrist watch protector
US4390288A (en) Watch casing
US4627738A (en) Watchcase and watchframe assembly
US3271945A (en) Watch casing with rotatable bezel
US4815053A (en) Rotating-bezel watch
US3548588A (en) Timepiece with turning bezels
US4620798A (en) Watch case
US6406178B1 (en) Device for assembling a cover made of hard material on the middle part of a watch
US3672157A (en) Combined watch and continuous watch band
US3306028A (en) Shock-proof device for watches
US3643424A (en) Fluidtight watch
US3901023A (en) Wrist-watch case
US2482317A (en) Tight winding device for watches
US5901117A (en) Watch frame comprising a case and a supporting device
US2309428A (en) Tight winding device for watches
US2392787A (en) Water resistant watchcase
US2291821A (en) Lens cap
US3640065A (en) Watertight watchcase for wristwatches
GB933969A (en) Improvements in or relating to strap attachments for wristwatches
US2385234A (en) Watchcase