US503314A - Watchcase-spring - Google Patents

Description

(NO Model.)

J. H. FLEMING. WATGHOASE SPRING.

1 I0.5 '03 ,314. Patented Aug. 15,1893.

UNITED STATES PATENT ()FFICE.

JAMES H. FLEMING, OF NEWARK, NE\V JERSEY.

WATCHCASE-SPRING.

SPECIFICATION forming part of Letters Patent No. 503,314, dated August 15, 1893.

Application filed February 12, 1889. Serial No. 299,646. No model.)

To aZZ whom it may concern.-

Be it known that I, JAMES H. FLEMING, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in VVatch-Springs; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification. i

This invention relates to certain improvements in that class of watch-case springs in which the loop or eye to receive the holding pin is formed in one integral piece with the body of the spring, the metal of said bodybeing pressed laterally outward to form the pin hole or eye. Heretofore, in the springs of this class, the loop or eye for the holding pin has been formed on the concave or inner side of the spring and at the lower edge thereof, or at the edge opposite that having the spur or look for engaging the edge of the lid and throwing or looking the same. This construction of the spring was objectionable in that the said projecting loop prevented a proper polishing of the exposed concave side of the spring by the polishing strap and emery employed commonly in polishing steel springs in this art, and thus the spring, when exposed to view in the Watch case, presented an unfinished and unsightly appearance. Furthermore, by the prior construction, in fastening the spring in place in the concavity of the watch case center, the holding pin was brought into prominent view to an objectionable extent by being arranged on the inner exposed face of the spring body. In this positiomthe pin threw said body back from a proper flush line with the inner edge of the case and was thus objectionable. Again, such springs cannot be employed in the cases now commonly found in the market, for the reason that the relation of the pin holes and interior steps or shoulders of the watch cases is such that the pins, after passing through the pin holes of the cases, cannot pass through the loops when arranged on the concave sides of the springs, the said steps or shoulders preventing the insertion of the springs a sufficient distance to bring the holes in line. These objections, and others which it is thought unnecessary to refer to, it is the object and purpose of my improved spring to avoid.

A further object of the invention is to secure a spring which, while possessing the above advantages, will allow the watch maker or workman, when removing the spring from the case, to pass his tool through an opening in the bodyof the spring to the pin concealed on the convex side thereof and thus enable him to force said pin from its bearings in the case.

The invention consists in the improved watch case spring, substantially as will be hereinafter set forth and finally embodied in the clauses of the claim.

Referring to the accompanying drawings in which like letters indicate corresponding parts in each of the views, Figures 1 and 2 are plans of the improved spring, and Fig. 3 is a side view of the same. Fig. at is a detail perspective view showing the hole or eye for the holding pin more clearly.

In said drawings, a indicates a watch case spring of a single integral piece of spring metal in all its parts, the spring being of a width to fit into the concavity of the watch case center.

Z) is the ordinary finger or spur to engage the watch case cover, either to lock or throw the same.

0 indicates the loop, integral with the body of the spring and forced outward from the convex side of the spring body and lying up and away from the lower edge of the spring, or the edge opposite that having the spur, so as to clear the interior step, now commonly found in watch cases, Back of the loop, thus projecting from the convex side of the spring, toward the concave side thereof, extending through the body of the spring, I form an opening or tool passage,c,through which the workman may pass his tool from the interior of the case to the pin lying concealed by the body of the spring and raise the pin from its hearings in the case. The pin passage being very small is hardly perceptible by a casual observer and does not detract from the finished appearance of the case.

Having thus described the invention, what I claim as new is 1. The improved Watclrcase spring herein described, consisting of a curved piece of spring metal adapted to lie in the Watch ease center and having a spur or look to engage the lid or cover of the case and having at its convex side a projecting loop, 0, to receive the holding pin, and, back of said loop, opening through the body of the spring to the concave side thereof, having a tool passage or opening, 0'', to enable the Workman to pass his tool from the interior of the case to the pin lying concealed at the convex side of the spring, substantially as set forth.

JAMES H. FLEMING.

Witnesses:

CHARLES H. PELL, E. L. SHERMAN.

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