US149839A - Improvement in watch-case springs - Google Patents

Improvement in watch-case springs Download PDF

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US149839A
US149839A US149839DA US149839A US 149839 A US149839 A US 149839A US 149839D A US149839D A US 149839DA US 149839 A US149839 A US 149839A
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watch
spring
case
improvement
case springs
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    • 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
    • G04B37/0008Cases for pocket watches and wrist watches
    • G04B37/0025Cases for pocket watches and wrist watches with cover or bottom with a spring (savonette) bench watches opening or closing with spring action G04B37/0463

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  • the object of my invention is to produce an adjustable lifting-spring for raising the case ot' a watch, of such a character that it will perform the work required, and may be easily adjusted to any watch without drilling additional holes in the case, and which, it worn out or broken, may beeasily replaced.
  • This is accomplished by the combination of the shank b, curved to lit the rim A, with slot c, and spring a, as shown in the accompanying drawings, Figs. l and 2.
  • the spring is illustrated more in detail, and its adjustability and adaptation more clearly shown in the drawing, Figs. 2 and 3.
  • Fig. 2 represents a watch-case with the spring in place, and a portion of the rim removed to show the parts.
  • B is the case to be raised;
  • A the rim.
  • b is a part of this invention, and is the shank having a slot, c, of sufficient length and depth to receive the spring a, and is held in its place by screw d.
  • the spring a is fitted so as to work closely in the slot o, and to rise a trifle above the sides of the shank, and is held in place by being drawn up against the case by the screw d.
  • Fig. 3 shows a cross-section of rim A with spring inserted in place, the rim A being cut at dotted line x a'.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)

Description

l. C. CWLES.
Watch-Case Springs.
No.149,839, Patented Apri|2`1,1a74.
if@ f UNITED STATES PATENT DEEICE. f
IRVING O. COWLES, OF SYRAOUSE, NEW YORK.
IMPROVEMENT IN WATCH-CASE SPRINGS.
Specification forming part of Letters Patent No. 149,839, dated Api-i121, 1874; application filed October 11, 1873.
To all whom it may concern:
Beit known that I, IRVING C. CowLEs, of the city of Syracuse, Onondaga county, State of New York, have invented a Lifting-Spring for a Watch-Oase, of which the following is a specification The object of my invention is to produce an adjustable lifting-spring for raising the case ot' a watch, of such a character that it will perform the work required, and may be easily adjusted to any watch without drilling additional holes in the case, and which, it worn out or broken, may beeasily replaced. This is accomplished by the combination of the shank b, curved to lit the rim A, with slot c, and spring a, as shown in the accompanying drawings, Figs. l and 2. The spring is illustrated more in detail, and its adjustability and adaptation more clearly shown in the drawing, Figs. 2 and 3. Fig. 2 represents a watch-case with the spring in place, and a portion of the rim removed to show the parts.
B is the case to be raised; A, the rim. b is a part of this invention, and is the shank having a slot, c, of sufficient length and depth to receive the spring a, and is held in its place by screw d. The spring a is fitted so as to work closely in the slot o, and to rise a trifle above the sides of the shank, and is held in place by being drawn up against the case by the screw d.
To adjust the spring to a Watch requiring a longer or shorter spring, it is only necessary to inove the spring a to the right or lel't in slot c as far as necessary. WVhen the spring is adjusted in its place, the screw-hole in the shank b will correspond with the screw-hole in the riin A.
Fig. 3 shows a cross-section of rim A with spring inserted in place, the rim A being cut at dotted line x a'.
I claim as my invention- A lift-spring for watch-cases consisting of the solid curved shank b, having a recess, c, and clamp-screw d, in combination with the spring a., substantially as described and shown.
IRVING C. OOWLES.
Witnesses E. E. EWERs, WM. CowIE.
US149839D Improvement in watch-case springs Expired - Lifetime US149839A (en)

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