US531729A - Electrical - Google Patents

Description

(N M (1 l.)

0 o e H. W. LAWRENCE. ADJUSTABLE HANGER FOR INGANDESCENT LAB [9%, GAS FIXTURES, &c. No. 531,729.. Patented Jan. 1, 1895.

UNTTED STATES PATENT rerun,

HARRY \V. LAWRENCE, OF DENVER, COLORADO, ASSIGNOR TO THE ELECTRICAL SPECIALTY COMPANY, OF SAME PLACE.

ADJUSTABLE HANGER FOR INCANDESCENT LAMPS, GAS-FIXTURES, do.

fiFECIFECATIQN forming part of Letters Patent No. 531,729, dated January 1,1895.

A plication filed December 1, 1893. Serial No. 492,553. (No model.)

To ail 1071,0722, it may concern.-

Be it known that I, HARRY W. LAWRENCE, a citizen of the United States of America, residing at Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Adjustable Hangers for Incandescent Lamps, Gas-Fixtures, the; and I do declare the following to he a full, clear, and exactdescription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in adjustable hangers, more especially designed for use in connection with incandescent electric lamps, but which may also be employed to regulate the height of movable gas fixtures. The device will therefore be described in this specification in both relations, and consists of the features hereinafter described and claimed all of which will be fully understood by reference to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 illustrates the hanger in connection with a movable gas fixture. Figs. 2 and 3 are sections taken through the weight carrying a pulley engaged by the flexible cord or gas conduit. Fig. 4 shows a modified form of the hanger employed in connection with an incandescent electric lamp, the weight being shown in section. Fig. 5 is a section taken through the weight at right angles to that shown in Fig. i. Fig. 6 is a sectional view of the two part casing, shown in connection with the insulating tube. Fig. 7 is a central vertical section taken through a modified form of construction.

In the views, wherein similar reference charactersindicate corresponding parts of the mechanism, andreferring for the present, specially to Figs. 1, 2 and 3, let the numeral 10 designate the ceiling of the room, or other fixed or stationarysurface through which projects the rigid gas pipe 15, to the free end of which is connected by a gas tight joint, the flexible tubular cord or conduit which passes downward under a pulley pivoted at in a recess 36 out in a movable metal weight 30, preferably spherical in shape. From pulley 25 the tubular cord passes upward over a pulley 40, pivoted in any suitable 4 support, preferably the ceiling of the room or the surface through which the gas pipe projects. From pulley e0 conduit 20 passes downward through an aperture formed in weight 30 which is solid. This aperture passes to one side of the pulley 25 which is located in the central upper portion of the weight. Below the pulley, the opening passes by a gradual turn, to the vertical center of the weight and thence in a directline downward. After passing through this aperture in the weight, the cord 20 passes downward and is connected by a gas tight joint with the tubular metal frame consisting of two branches which extend downward, and then inward to the burner 60, provided with a shade 65. Suspended from the top of this metal frame is the bell-shaped deflector 70. It will be seen from this description that the gas passes through the flexible tube 20 to the tubular frame 55, and thence to the burner having the regulating key '75. The weight 30 is so regulated that the burner will remain in whatever position it is placed. It will be seen that as the burner is raised, the weight descends, while as the burner is lowered, the weight rises, the gravity of the parts being so regulated that they move quickly and easily when the burner is pushed upward or pulled downward.

Referring now to Figs. at, 5 and 6, lot 20 designate the insulated electrical conductors twisted together in the usual manner, and leading to the incandescent lamp 21 provided with the shade 22. These conductors pass from the ceiling of the room, or other suitable support, downward to engagement with a pair of pulleys 25 pivoted in the weight30, thence upward over the pulley 4.0, and downward through an insulating tube 23 passed through an opening formed in the spherical metal weight, and thence to the lamp. The tube 23 is formed of some good insulating material, and is provided at its lower extremity with a shoulder 23, its upper extremity being threaded to receive a nut 23 which holds the tube in place. The weight 30 is inclosed by a section casing, composed of two semi-spherical parts 24: adapted to fit together, forming a suitable joint as shown at 26. These casing parts are suitably apertured to receive the insulatin g tube and the conductors 20, and are held in place by the tube, since its shoulder and fastening nut are exteriorly located with reference thereto. The gravity of the weight is so regulated that the lamp is maintained in any desired position of adjustment. The body of the weight may be formed of wood designated by the reference character 30 in Fig. 7, and having a cup shaped part 3O at the top, in which are located the pulleys 25 pivoted in suitable supports made fast in the metal filling 3O preferably composed of lead, which while in a molten state is poured into a recess bored in the body of the block. The weight is provided with the opening 20 for the reception of the conductors 20 after leaving the pulley 40.

Having thus described my invention, what I claim isi In an adjustable hanger for incandescent electric lamps, the combination with the lamp and suspension conductors, of a spherical weight recessed at the top to receive small pulleys, and provided with an opening from top to bottom, a two-part casinginclosing said weight and having co-inciding apertures, an insulating tube passing through the apertures in the weight and easing, said tube having a collar at one end, and a nut at the opposite end which is screwed tocngagement with the casing, whereby the latter is held in place, and a pulley pivoted in a suitable stationary support above, the arrangement being such that the insulated conductors supporting the lamp pass downward around the pulleys of the weight (the casing being apertured to receive them), upward over the pulley attached to the fixed support, and downward through the insulating tube of the weight to thelamp, substantially as described.

In testimony whereof I atlix my signature in the presence of two witnesses.

HARRY W. LAWRENCE.

Witnesses:

G. J. ROLLANDET, Ones. E. DAWSON,

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