US979793A - Shade-holder. - Google Patents

Description

W; H. PERKINS.

SHADE HOLDER.

APPLICATION FILED PEB.26, 1910.

979,793, I Patented Dec. 27, 1910.

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WALTER H. PERKINS, OF CHESHIRE, CONNECTICUT, ASSIGNOR TO WATERBURY MFG.

CO., 01? WATERBURY, CONNECTICUT, A CORPORATION.

SHADE-HOLDER.

Application filed February 26, 1910.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, WALTER H. PERKINS, a citizen of the United States, residing at Cheshire, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Shade-Holders; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a View in side elevation of a shade-holder constructed in accordance with my invention and shown as applied to a lamp-socket. Fig. 2 a detached view in side elevation of the lamp-socket. Fig. 3 a de tached broken view in side elevation on an enlarged scale of the shade-holder. Fig. 4 a detached broken plan view of the shadeholder on the same scale. Fig. 5 a detached view in side elevation of the locking-ring. Fig. 6 a corresponding plan view thereof. Fig. 7 a broken view in horizontal section on the line 00-?) of Fig.3. Fig. 8 a broken view in vertical section on the line 0(Z of Fig. 1.

My invention relates to an improvement in shadeholders for electric lamps, the object being to produce a simple, compact, convenient and durable shade-holder constructed with particular reference to firmly securing the holder to the lamp-socket with which it is used.

With these ends in view, my invention consists in a shade-holder having certain details of construction and combinations of parts as will be hereinafter described and pointed out in the claim.

In carrying out my invention as herein shown, I provide the upwardly extending coupling sleeve or flange 2 of the holder 3 (which may be of any approved form and style) with two integral spring couplingarms 4 located directly opposite each other, extending in opposite directions, and pro duced by cutting them out of the body of the said sleeve so as to leave clearance spaces 5 adjacent to their upper and lower edges and outer ends. These arms 4 are set, by bending them outward, so as to normally project beyond the outer periphery of the sleeve or flange 2 and each arm is formed near its outer end and close to its upper edge with an inwardly projecting locking-lug 6 produced, as shown, by upsetting a portion of the metal. The holder 3, as shown, is considerably larger in diameter that the diameter of the sleeve or flange 2 from which it depends.

In conjunction with the sleeve or flange 2 I employ a locking-ring 7 adapted to fit over it with a friction fit which permits it to be rotated within the limits prescribed by the length of a slot 8 formed in its lower edge for the reception of a stop-finger 9 turned upward from the holder 3. As shown, the upper edge of the ring 7 is formed with a knurled bead 10 by means of which the ring is turned within the limits prescribed by the slot aforesaid. At opposite points this ring is formed with clearance slots 11 sufiiciently large to permit the free ends of the arms 4 to spring out into them for the clearance of the locking-lugs 6 from the circumferential locking bead 12 formed near the outer end of the socket 13, the extreme outer ends of the arms being bent outwardly as at 4 so as to ride over the adjacent end walls of the clearance slots 11 when the ring 7 is turned to the limit of its unlocking movement, whereby the ring itself assists in moving the arms 4 to the limit of their outward or clearance positions.

In using the device, the ring 7 is grasped by its knurled bead 10 and rotated from left to right, whereby its clearance slots 11 are brought into registration with the outer ends of the spring-arms 4 which then spring outward into them, the said arms 4 being positively lifted outward to complete their clearance movement by the riding of their outturned ends 4 over the adjacent end walls of the slots 11. The shade-holder is now applied to the lamp-socket 13 the bead 12 of which passes beyond the locking-lugs 6 of the arms 4 which are at this time in their clearance positions. The holder and socket having thus been positioned, the lockingring 7 is turned from right to left, whereby the slots 11 are carried out of registration with the spring-arms 4 which are by the said ring forced inward so as to force their locking-lugs 6 inward over the upper portion of the bead 12, whereby the socket and bolder are firmly locked together as clearly shown in Fig. 8, the friction now developed being sutlicient to retain the ring 7 in place.

To remove the holder from the socket the said ring is turned in the opposite direction when the spring-arms at immediately assert themselves and spring outward into the clearance slots 11 of the ring, and so clear their lugs 6 from the bead 12 and permit the socket and holder to be drawn apart.

It is apparent that the number of springarms 4 may be varied as desired, without departing from my invention. The holder 3 is formed with the usual flange or skirt 14 furnished with screw-carrying lugs 15.

I claim y In a shade-holder, the combination with a flange or skirt provided with shade-fastening devices and having an upwardly extending coupling-sleeve or flange smaller in cliameter than the diameter of the said flange or skirt and formed with a plurality of concentric spring arms each of Which is formed at its outer end with an inwardly projecting locking-lug; of a locking-ring encircling the said flange or skirt and formed upon its upper edge with a knurled bead, and at its lower edge with a stop-notch, and having a clearanceslot for each of the said spring arms aforesaid, and a lamp-socket formed at its lower end with a circumferential outwardly projecting locking-bead adapted to clear the said locking-lugs when the arms are in their retired positions in the said slots, and to be engaged by the said lugs for coupling the flange or skirt to the socket when the said arms are crowded inward by the rotation of the said locking-ring.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

WVALTER H. PERKINS.

Witnesses:

HENRY F. Gon'rz, GEORGE L. PAGE.

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