US981586A - Lamp-holder. - Google Patents

Description

T. B. MONGSMITH.

LAMP HOLDER. APPLICATION FILED JUNE 1, 1909.

Patented Jan. 10, 1911.

THOMAS B. MONOSMITH, F BAY CITY, MICHIGAN.

LAMP-HOLDER.

Specificationof Letters Patent.

Patented Jan. 10, 191.1.

Application med-June 1, 1909. Serial No. v4993.51.

To all whom it may concern:

Be it known that I, THOMAS E. MONO- SMITH, a citizen of the United States, residing at Bay City, in the county of Bay and State of Michigan, have invented certain new and useful Improvements in 'Lamp- Holders; and I do hereby declare the followiing to be a full, clear, and exact description also in vaults, closets and the like where a continuously burning light is not necessary. The invention is also adapted for use on motor vehicles when it is necessary to inspectanii repair the mechanism.

One object of my invention is to provide a device of this nature wherein the strain is taken up by the holder and cord, to avoid the imPOSltIOILOI excessive strain upon the lamp socket in the holder.

Another object of my invention is to provide a holder which does not necessitate the soldering of the reflector to the holder.

Another object of my invention is the provision of novel means r firmly connecting the cord to the holder without injury to the cord.

Another object is the provision of means for preventing the twisting of the connecting cor'd;

A still further means isthe provision of a neat, 'si'mplb article of this description, which is easily taken apart for inspection and adustment sembled.

To these and other ends, my invention consists in certain novel features and com-- binatio'ns such as will be morev fully described hereinafter'and particularly pointed out in theclaims.

In the accompanying, drawings, Figure l is a perspective view of my'invention, Fig. 2 is a longitudinal sectionalyiew, Fig. 3 1s a detail perspective view of the clamping jaws disassembled, Fig. is an end view showing the nipple with its ribs, and Fig. 5 is ;-and which may be readily reasof Fig. 2, and Fig. 6 is an enlarged lon itudinal sectional view of the clamping e vice.

Heretofore lamp holders for exploring purposes have been so arranged that the strain caused by the operator in poking the lamp into dark corners, has been sustained by the lamp socket to which the circuit wires are soldered. The objection to this is that frequently the socket is damaged, the wires pulling 'out of the socket and considerable expense incurred in repairing the construction.

It is my endeavor to simple lamp holder whic inexpensive and wil fulfilevery requirement.

Referring to. the drawings, A indicates the lamp holder which may be made of any suitable material as gutta-percha, for instance, and of anysuitable shape. In the present instance I have. shown such holder as being of the usual bell shape, the apex of such holder having affixed thereto a hollow nipple 1, the free end of which is exteriorly threaded. The hollow nipple communicates with the interior of the holder, the bore of the nipple being preferably rov-ided with a plurality of ribs 2, 2, upon t e inner ends of which is supported the end of the independently of and attached to the bell. In order to remove the strain caused in the use of this lamp holder, from the lamp socket 3, I provide the co-acting clamping members are provided with convex tapering outer faces and flat inner faces. One of the clamping members 4: is provided with a recess 5 in its flat inner face, the opposing flat , ribs 2, 2, in the nipple to prevent the rotation of the clamping members and one or both of the inner fia't faces ofthe clamping members may be grooved a at 8, to receive the cord 9 leading from the lamp socket 3to' any suitable source of power. In order to retain the clamping members tightly clamped upon the cord 9 'to prevent the provide a practical lamp socket 3. The nipple may be formed a detail cross-sectional view on line a2.a

members 4:, 4. These co-acting clamping face of the other clamping member being strain from being transmitted by the cord to the lamp socket, 1 provide the sleeve 10 hav- 3 ing a tapered bore, one end of which is interiorly threaded and adapted to be received 1 upon the threaded end of the nipple 1. 3y screwing such sleeve down upon the nipple, the reduced portion of the bore of the sleeve is brougnt into engagement with the convex ccptacle A, the tube 1, and the sleeve 10, the tube and sleeve. serving as a handle) with a flange 16 which in client, permits the structure to be nscdas a hand rest on which to wind the cord'tl. 'lhe. tlange prevents the cord wound on the handle 'l'rom slipping faces ot the clamping members to squeeze 1 them snugly together upon the cord 3) and thereby prevent any strains from being transmitted to the lamp socket.

By providing the clamping members with the tenons 7 received in the sockets formed between the ribs 2, l prevent the clamping off and tangli'ng. notch 11' is formed in the periphery of the flange to receive the cord which is wound on the handle, the tree end of the cord being inserted through an aperture 18 which prevents the cord from unwinding.

members from being rotated as the sleeve is screwed into position and thus avoidtwisting the cord which would result in injuring its connection with the lamp socket.

tenons 7 may be of less length than the ribs tainer of any suitable description, not

shown, and removable therewith, or such reflector may be otherwise secured within the flaring end of the holder.

The lamp is easily removed when burned Thenotch prevents the. cord from slipping around the flange.

From the foregoing it is evident that I have devised a most simple and iuexpensive lamp holder for the purposes set. forth andone which is easily assembled and disassembled for repairs or inspection, and it- IS obvious that changesmlght'be made in the torm and ar angement oi the several parts described without departing trom the spirit and scope of my invention.

Having thus fully disclosed my invention,

5 what I claim as new, 1s:

out and the nipple and sleeve serve as a handle which is grasped by the operator,

such handle being virtually solid and hence strong and rigid.

The inner end of the lamp socket is snugly seated on the inner ends of the ribs to prevent its vibration in the holder, being held in its seat by the tension on the cord. Such tension is not increased during the use of the lamp, however, owing to the clamping means which maintains the cord stretched between the lamp socket and the jaws. It is obvious that the cord might be twisted in removing and replacing the lamp 12, to prevent which I preferably groove the inner periphery of the nipple as at 13, to receivg a key 14, such key b fng usually formed by the solder bywhich one wire of the cord is connected to the socket. 3. This maintains the socket against rotation when thelamp is being removed and replaced. I may also interpose a gasket or washer 15 between the inner end of the lamp socket. and its apei tured seat; to absorb shocks or jars and prc vent undue strain from bein )laced on the connections of the lamp cord therewith. Thus, by means of the clamping aws and the key and key scat',.I have reinforced and strengthened the weakest points of former exploring lamps.

I prefer in some casesto equip the handle ortion of my lamp holder (which in this instance consists of the enlarged lamp re- 1. A lamp holder comprising a lamp-receiving receptacle, a tubular member connected therewith and adapted to receive a lamp socket and cord, clamping members between which the cord is received, the inner face of one ofthe clan'iping members being recessed, the inner abutting face of the remaining clamping member having a ridge extending thereaeross opposite the recess in the first-named clamping member, the inner face of at least one of the clamping members being grooved to receive the lamp cord, and means removably connected to the tubular member and surrounding the clamping members to retain them snugly upon the cord.

2. A lamp holder comprising a lamp-receiving receptacle, a tubular member connected therewith and adapted to receive a lamp socket and cord, clamping members between which the cord is rtareived, the clamping members provided with teuons receivable in sockets formed in the tutmlar member, the lamp cord received between the clamping members, and means removably receivable on the tubular member and encircling the clamping members to clamp them upon the cord.

3. A lamp holder comprising a. lamp-receiving receptacle, a tubular member connected therewith and adapted to receive a lamp socket and cord, clamping men'ibers between which the cord is received, a recessed seat formed in the tubular member for the'lamp socket, tcnons on the clamping members receivable in the seat, and means removably receivable on the tubular member and encircling the clamping members to snugly clamp them together on the lamp cord.

4. A lamp holder comprising a lamp-remenn oi I soeizet seated elan'iping members, one end member. comrihs n the tubular on the inner ends of the ribs. of each of which is received in the tuhnhu' member and held lreling the clamp them together on combination with :1 lamp, cord 5. In lamp holder, 5 the lamp hel :ted to receive 7 abutting tnces, l0 receivable on the e lamp cord between and means ren'iovahly tubular member and en- I i i i the clamping members;

clamping members to snugly the lamp cord.

and a threaded nipple secured to tlLI, plurality of ribs in the bore of said nipple, gtthreaded sleeve formed with a tapered bore, a plurality of tapered clamping members received in said sleeve, tenons formed on the ends of said clamping members and adapted to engage the ribs of said. nipple to prevent rotation of said. members when the sleeve and nipple are screwed together.

.In testimony whereof, I afiix my signature in presence of two Witnesses.

THOMAS E. MONOSMHTH. Witnesses:

RALPH S. VARFIELD, CHRISTINE A. BRAIDEL.

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