US2137519A - Sundial watch - Google Patents

Description

l. WIGDOR SUNDIAL WATCH Nov. 22, 1938.

Filed Julyl4, 1938 INVENTOR. /JC' W/'/P ATTORNEY.

Patented Nov. 22, 1938 UNITED STATES PATENT OFFICE I I 2,137,519 I SUNDIAL WATCH Isaac Wigdor, Bayonne, N. J.

Application July 14, 1938, Serial No. 219,107

2 Claims.

The present invention relates to a novel form of sun-watch and relates more particularly to a watch of the type known as a sundial Wrist watch.

Various constructions of sun-watches have been proposed heretofore for the pocket type, but it is essential in the present device for use as a wrist watch to not only provide a reasonably reliable instrument but to provide a rugged and at the same time simple construction.

A sun-watch necessarily finds its greatest use in the field by Sportsmen, camper-s; and isof considerable advantage and interest to boy scouts and in View of water tight character of the device may be used by bathers. The watch must, therefore, be so constructed as to be salable at relatively low cost and at the same time give long service.

The present structure meets the above requirements by the novel formation and arrangement of parts, the majority of which may be made by punch and die and by reason of their assembly along a common axis in a nested relation.

The present invention therefore consists in an arrangement of co-related parts and elements in combination to provide an instrument of the character described, constructed in a novel and effective manner to provide a durable and useful device.

Other objects and advantages of the invention will be more clearly understood by reference to the following description together with the accompanying drawing, in which Fig. 1 is a top view of a sun-watch construction in accordance with the present invention.

Fig. 2 is an edge view of the watch shown in Fig. 1.

Fig. 3 is an enlarged sectional view of watch showing the nested arrangement of the component parts.

Fig. 4 is a View showing the several parts ready for assembly, and

Fig. 5 is a perspective view of the sun dial plate.

As shown in the drawing the selected embodiment of the invention may comprise a casing I having an outer re-enforcing hollow flange II and an inner compartment I2. Adjacent to one end of casing IIB is an aperture I3 to receive the shank I4 of a finger piece or knob I5.

The knob I5 is provided with a square end I6 to iit a square hole I'.' in a holder I8 for a compass holder I9 for a compass 20. When the holder is in place in the casing I0 a pin I9 is inserted through a transverse hole 20 in the square end I6.

A rubber gasket 2I on the outer side of the casing in conjunction with a rubber washer 22 between the casing I0 and the holder I8 seals the interior of the casing against the entrance of moisture and at the same time permits a rotation of the compass holder to adjust the same to cause the needle 23 of the compass to point north (N) and bring the gnomon 24 of a sun dial 25 in the plane of the earths meridian.

The compass holder may be encased in a sheath 26 of moisture proof material and a cover plate 2'I having a suitable opening 28 is provided to close the face of the compass. The sun dial as shown in Fig. is in the form of a bent sheet 29 having one surface 25 provided with the gnomon 24 and numerals and marker lines 30 and 3I respectively, and another surface 32 arranged to cover the compass holder. The bent sheet 29 is provided with legs 33 integral with surface 32 and a ange 34 integral with surface 25.

When the bent sheet 29 is in position it not only serves as the face of the sun dial but provides a sight aperture 35 and cover for the compass. The lugs 33 and flange 34 extend to the rear wall of the casing I0. The sun dial is thereby supported in position at one end of the casing I0' and a finished surface is provided for the compass at the other end of the casing.

- When the component parts have been assembled a cover plate 36 is applied to complete the device.

The cover plate includes a frame 31 for holding a crystal of glass 38 or if desirable a transparent unbreakable material which is sealed by means of an annular flange or shoulder 39 in conjunction with a sealing compound.

The frame 3'I is formed with side walls arranged to lit adjacent an abutment 40 on the casing IIJ. When in position the frame is secured in place by top bolts 4I. At opposite ends of the frame are provided pairs of lugs 42 and 43 to receive the usual pins by means of which ends of a strap 44 are secured to the device whereby it may be worn on the wrist similar to the ordinary Wrist watch.

It is to be understood however that the construction shown lends itself to the pocket type of watch as Well.

Although a preferred embodiment of the invention is shown and described herein, it is to be understood that modifications may be made without departing from the spirit and scope of the appended claims.

What is claimed is:

1. A sun-watch comprising a casing, a compass, a holder for said compass, a nger piece for rotating said compass, a bent plate having one portion with characters to provide a dial, a gnomon arranged to cooperate with said dial, another portion of said plate extending over said compass, extensions on said plate to engage said casing to hold said plate in position, a cover plate having a Window and means for securing said cover plate to said casing.

2. A sun-dial Wrist Watch comprising a casing, a compass at one end of said casing, a holder for said compass, a finger piece having a shank extending through a Wall of said casing and secured to a compass holder, a cover for said holder having an aperture to expose said compass, a stepped plate having one portion over-lapping said compass holder cover and having a sight aperture, another portion disposed at the other end of said casing having a dial face, a gnomon perpendicular to said dial face, extensions on said plate for supporting the plate in said casing, a cover plate having a Window and means for securing said cover to said casing.

ISAAC WIGDOR.

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