US269383A

US269383A - Fiena

Info

Publication number: US269383A
Authority: US
Publication date: 1882-12-19
Anticipated expiration: 1899-12-19

Description

(No Model.)

J. CALDWELL.

` EAR KNOB. yNo. 269,383. Patented De0.19, 1882.

FIEIIE| FlEn. PIE-m4n WITNEEIEIEEI Ilm/ENTER.

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UNITED STATES PATENT OFFICE.

JOHN CALDWELL, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO WV. B. BENNETT St GO., OF SAME PLACE.

EAR-KNOB.

SPECIFICATION forming part of Letters Patent No. 269,383, dated December 19, 1882. Application mamy 8,1882. (No model.)

To all whom it may concern Be it known that I, JOHN CALDWELL, of Providence, in the State of Rhode Island, have invented an Improvement in Ear-Knobs, of which the following is a specification.

The 'nature of my invention consists in an improvement in the devices for locking the knob to the ear, whereby an efficient lockingcarch is secured Without unduly weakening the wire of the pin which passes through thev perforation in the ear, as hereinafter fully set forth.

Figure 1 represents my improved ear-knob partly in elevation and partlyin section. Fig. 2 is a plnnlview of the inner face of the springcase. Fig. 3 represents a similar view ot' the spring-case, with the perforated disk removed, showing the form ofthe locking-spring. Fig. 4 is a detail view, showing` the notch in the pin for-engagement with the locking-spring.

In the drawings, A is -the setting' for the stone B. The ear-penetrating pin O, attached to the back of the setting A, is made pointed and provided on one side with a single notch, a.

Within the hemisphericnl case l) is secured the wire spring E, bent in circular form, with two inwardly-turned arms, e e, which serve to clasp the pin C, one on either side. The spring E is held in the case D by means of the disk F, which is perforated at its center b to receive the end of the pin O. After passing the pin C through the perforation in the ear, from the iront thereof', the spring-case D 1s to be placed over the point of the pin O, the pin entering` the hole b in rthe disk F. The two parts A l) will then be secured to each other by the engagement of one ot' the spring-arms c with the notch a, made at one side of the pin, and in order to remove the knob from the ear one of the parts is to be held while the otheris turned fora'oout ninety degrees, so as to bring the notch c on that side of the pin which is included between the spring-arms e e. The spring-case D may then be readily pulled from the pin O and the pin removed from the perforat-ion in the ear of the wearer. Thepin O, being of necessity made small in order to suitably enter the hole in the ear, is not adapted for more than a single notch, which should extend to near the center ot' the wire, and upon insertion into the holeb the pointed end of the pin will force the arms c e apart, and the notch c will either engage directly with one of the spring-arms e c, or, in case the pin is not entered in the proper angular position to effect such direct engagement, a slight rotary movement of either of the parts A D will serve to effect the proper engagement, and the combination of two spring-arms with a pin having a single notch is the gist-of my improvement, whereby the advantage of a strong and durable lock is secured, with ready and convenient attachment to the ear under any angular position of the holding-pin.

I am aware that ear-knobs have heretofore been constructed in whiclrtwo spring-arms are made to engage with a circumferential groove made around the pin, causing liability of bending or breaking; but

I claim as my invention- In an ear-knob, the combination of the ense D, perforated disk F, and spring E, provided with the two spring-arms ee,with the pointed pin O, provided with the notch d, made atone side ofthe pin,'and adapted fordisengagement from either of the spring-arms e by the angular movement otl the case D and pin O relatively to each other, substantially as described.

JOHN CALDWELL.

WVitnesses 1 SOCRATES SoHoLFrELD, WELLINGTON P. DoLLoFE.