US1085103A - Spring-clasp. - Google Patents

Description

J. BONNER.

SPRING CLASP.

APPLIUATION FILED JULY 7, 191s.

1,085,103. Patented t12111.211914.

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SPRING-CLASP.

Specification of Letters Patent.

Application filed July 7, 1913.

Patented Jan. 27, 1914. serial No. 777,673.

To all whom it may concern Be it known that I, JULiUs BoNNnR, a citizen of the United States, residing at Brooklyn, county of Kings, State of New York, have invented new and useful Improvements in Spring-Clasps, of which the following is a specification.

This invention relates to a spring clasp and it provides a device which is of simple construction and will positively fasten the two ends of a bracelet or other article of jewelry.

The essential feature of the invention consists in providing one of the members of the bracelet with a spring tongue and an actuator carrying a lever whereby the shanks of the tongue can be spread to engage a sec- The spring tongue has a hook portion to engage a slot formed in the second member, and when the lever is in a position to engage the shanks of the spring tongue it moves the hook into positive engagement with the second member and thus locks the two members together.

rlhe invention also provides means for preventing accidental movement of the actuator crank when the members are locked together.

The novel features of the invention are more fully described in the following specification and claims and illustrated in the accompanying drawings in which:

Figure l represents a plan or top view showing the invention applied to a bracelet. Fig. 2 is a side eleva-tion of a portion of the bracelet. Fig. 3 is a detail horizontal section taken along the line a: of Fig. 2. Fig. 4 is a view like Fig. 3 showing the members apart. Fig. 5 is a. side elevation of the tongue member.

In this drawing is shown a. bracelet a consisting of a plurality of links joined together in the usual manner. The end por tions of the braceletconsist of a primary member o and a secondary .member c linked to the other members as shown. The primary member is provided with a bifurcated spring tongue Z which is substantially U- shaped and it has a hook portion d formed on the side of the member.

Mounted on the member b is an actuator consisting of a crank e pivoted at f to the member. To this pivot is xed a lever g the function of which will be hereinafter described. A stud z, formed on the member is adapted to engage a recess t' on the back of the crank. A push button j is fixed to the end of one of the shanks of the tongue. lVhen the two members are clasped together the hook cl on the tongue will engage a slotted portion 7u formed in the side of the secondary member. Vith the members in this position the actuator is operated to swing the lever g between the shanks of the spring tongue and thus spread the shanks to prevent unlocking of the hook from the secondary member. Vhen the crank is in this position it is engaged by the stud It and accidental movement of the crank and the lever is avoided. lVhen it is desired to release the hook the crank e is oscillated to move the lever out of engagement with the spring tongue as indicated in Fig. 5, the button j can then be pushed to move the Shanks of the tongue toward each other to disengage the hook and the two members can be slid apart.

It will be seen that the spring clasp can be applied to any article of jewelry where the ends of two members are adapted to be fastened together'.

As indicated in Fig. l the lever g is shown disengaged from the bifurcated portions of the spring tongue. In this position the spring hook shank of the tongue springs toward the opposite shank of the tongue. This movement of the spring shank is not suiicient to release the hook d from the slot 7c of the secondary member. Then it is desired to release the hook the button y' is pushed thus moving the hook shank of the spring tongue toward the opposite shank to unlock the secondary member. In this connection it may be stated that the primary object of t-he lever g when swung between the bifurcated portions of the Shanks is to move the hook portion of the shank into positive engagement with the slot of the secondary member.

l claim:

l. In a spring clasp the combination with a primary and secondary member, of a springy bifurcated tongue secured to the primary member and having a hook portion, a lever swingingly pivoted to the primary member for engagement with the bifurcated portions of the tongue to move the hook into positive engagement with the secondary member, and a crank mounted on the pivot to actuate the lever.

2. In a spring clasp the combination with a primary and secondary member, of a springy bifurcated tongue secured to the primary member and having a hook portion, a lever swingingly pivoted to the primary member for engagement with the bifurcated portions o the tongue to move the hook into positive engagement with the secondary member, a crank mounted on the pivot to actuate the lever, and means for preventing accidental throw of the crank.

3. ln a spring clasp the Combination with a primary and secondary member, of a springy bifurcated tongue secured to the primary member and having a hook portion, a lever swingingly pivoted to the primary member for engagement with the bifurcated portion of the tongue to move the hook into positive engagement with the secondary member, a crank mounted on the pivot to aetuate the lever, and means carried by the primary member for preventing accidental throw of the crank when the lever is in engagement with the spring tongue.

4. In a spring clasp the combination with a primary and Ysecondary member, of a springy bifurcated tongue secured to the primary member and having a hook portion, a lever swingingly pivoted to the primary member for engagement with the bifurcated portions of the tongue to move the hook into positive engagement with the secondary member, a crank mounted 0n the pivot to actuat-e the lever, and a stud formed on the primary member for engagement with the crank at predetermined times.

In testimony whereof l have hereunto set my hand in the presence of two subscribing witnesses.

JULIUS BONNER.

litnesses lVu. E. VARLAND, CHRIS. H. ALMSTEAD.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents. Washington, D. C.

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