US749099A - Watch-bow fastener - Google Patents

Description

No. 749,099. PATENTED JAN. 5, 1904. J. H. ROGERS.

' WATCH BOW PASTENER.

APPLICATION FILED MAR. 12. 1903.

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UNITED STATES Patented January 5, 1904.

JAMES H. ROGERS, OF GRIDLEY, ILLINOIS.

WATCH-BOW FASTEN ER.

SPECIFICATION forming part of Letters Patent N 0. 749,099, dated January 5, 1904.

- Application filed March 12, 1903. Serial No. 147,501. (No model.)

To all whom it may concern..-

Be it known that I, JAMES H. ROGERS, a citizen of the United States, residing at Gridley, in the county of McLean and State of Illinois, haveinvented new and useful Improvements in Watch-Bow Fastenings, of which the following is a specification.

This invention relates to a bow-fastening for watches, and the purpose of the same is to provide a particular joint between the terminals of the bow and the pendant of a watchcase to resist wear and insure a reliable attachment of the bow'to the pendant without requiring a complete diametrical insertion of a fastening device relative to the pendant.

Theinvention consists, essentially, in forming a watch-pendant with diametrically-disposed bosses or projections having outer arcuate terminals, and providing the lower terminals of a watch-bow with dependent heads having sockets of arcuate contour to movably fit over and be secured to the bosses or projections of the pendant, the heads of the bow being projected outwardly under the terminals of the latter to permit a close fitting or application of the said bow-terminals to the pendant.

The invention further consists in the details of construction and arrangement of the several parts which will be more fully hereinafter described and claimed.

In the drawings, Figure 1 is a vertical longitudinal section, on an enlarged scale, through a case-pendant and a portion of a bow, illustrating one form of connecting means for the bow and pendant. Fig. 2 is a similar view of a portion of a pendant, showing a modification in the manner of attaching the bow thereto.

Similar nu morale of reference are employed to indicate corresponding parts in the views.

The numeral 1, Fig. l, designates a pendant which is formed with eXteriorly-located diametrically-disposed bosses or projections 2, having outer arcuate terminals having screw-sockets 4, extending partially thereinto from the exteriorand opening outwardly from the centers thereof. The bosses or projections 2 and 3 have diameters proportionate to the size of the part of the stem from which they project to reinforce the part of the stem to which the bow isapplied and also to provide means for practically attaining the result sought and compensate for frictional wear without injuring the stem itself.

The bosses 2 and 3 have heads 5, depending from the terminals of a bow 6, movably applied thereover, each head being formed with an arcuate socket 7, opening out'through its inner side to snugly receive the boss or projection over which it is adapted to fit. The said heads 5 project outwardly beyond and under the terminals of the bow to permit the latter to be closely assembled in relation to the stem and also to increase the maximum thickness of theheads at points thereon where the greatest wear will be imposed. Through the center of each head a bore or opening 8 is formed, of greater diameter than the screwsocket 4 in each boss, the bores 8 being so positioned that when the heads are applied to the bosses or projections they will be centrally disposed over the screw-sockets 4. The heads 5 and bosses or projections 2 and 3 are held in associated pivotal relation by pivotpins having screw-shanks 9, cylindrical enlargements 10, and convex heads 11. The screw-shanks 9 are of a length equal to the depths of the sockets 4, and the enlargements 10 have a length equal to the length of the bores 8, so that when the pivot-pins are inserted the heads will be rotatable on the enlargements 10, which have smooth surfaces to avoid loosening the screw-shanks in the sockets 4. Each head 5 around the exterior terminal of the bore 8 is formed with a flat rim 12, against which the inner straight face of the convex head 11 of the pivot-pin has bearing, the diameter of the said straight face of the head of the pivot-pin precisely equaling the diameter of the face of the rim 12, and from the outer periphery of the rim the outer side of the head 5 slopes away in opposite inclined directions to form a smooth joint and to render the head 11 of the pivotpin readily accessible. It will be observed that the lifting strain or pulling force that may be exerted on the how 6 is partially removed from the pivot-pins by a bracing efiect which exists by reason of portions of the heads 5 bearing against the under or lower portions of the bosses 2 and 3. Moreover, by having the outer terminals of the bosses 2 and 3 and the sockets 7 of the heads of corresponding arcuate form wear on the contiguous parts will be materially reduced and equally distributed. The inner terminals of the cylindrical enlargements 10 of the pivot-pins are also given a slight arcuate contour, as at 13, to conform and fit snugly against the curvature of the portions of the bosses or projections against which they hear when said pivotpins are fully inserted to avoid the establishment of shoulders or edges which might have a detrimental wearing operation on the heads 5.

The modified form of the device shown by Fig. 2 contemplates the formation of a boss 14 with a stem and an outwardly-projecting stud l5 continuing from the center of the boss and terminating at its free end in a smooth rivet-shank 16 to receive a rivet-cap 17, similar in form to the head 11 of the pivotpin shown by Fig. 1. The bow used in connection with this modification will be in all particulars similar to the construction heretofore described and having heads on its terminals with outer rims of a diameter equaling the inner face of the rivet-caps 17. The surface of the stud is smooth and the bore through the head of the bow will be freely rotatable thereon and equal in length to the said stud.

The improved device in its two forms will be exceptionally advantageous, and it will be understood that changes in the proportions, dimensions, and minor details of construction may be resorted to without departing from the spirit of the invention.

Having thus fully described the invention, what is claimed as new is- 1. Ina watch-bow-fastening means,the combination of a pendant having diametricallydisposed bosses with outer convex terminals, and a bow having heads depending from and projecting outwardly under its terminals and provided with concave sockets to receive the said bosses, the convex terminals of the bosses being located inwardly at a distance from the outer surfaces of the bow-heads in alinement therewith, the heads having bores extending centrally therethrough, and the heads and bosses connected by a pivotal means projecting through and enlarged within the bores, said pivotal means being provided with outer enlarged cap elements having their perimeters accurately coinciding with the adjacent portions of the bow-heads to avoid the formation of shoulders or projections.

2. Inawatch-bow-fasteningmeans,thecombination of a pendant having diametricallydisposed bosses with outer convex terminals and central screw-sockets opening outwardly therefrom, a bow having heads depending from and projecting outwardlyunder the terminals thereof and provided with central concave sockets to receive the bosses and having central bores of greater diameter than the screw-sockets in the bosses, and pivot devices formed with screw-stems to engage the sockets of the bosses, and cylindrical enlargements to fit in the bores of the heads, the outer headed ends of the pivot devices having their perimeters flush with adjacent portions of the bow-heads.

In testimony whereof I afix my signature in-presence of two witnesses.

JAMES H. ROGERS.

Witnesses:

O. M. OoYLE, A. L. COYLE.

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