US416862A - Benjamin schardt and william lutzenberger - Google Patents

Description

-(No Model.

B. SGHARDT & W. LUTZENBERGER. ELECTRIC LIGHT SUPPORT.

No. 416,862. Patented- Dec. 10, 1889.

I UNITED STATES PATENT OFFICE.

BENJAMIN SCHARDT AND WVILLIAM LUTZENBERGER, OF DAYTON, OHIO,

- ASSIGNORS OE ONE-THIRD TOHERMANN PRETZINGER, OF SAME PLACE.

ELECTRIC-LIGHT SUPPORT.

SPECIFICATION forming'part of Letters Patent No. 416,862, dated December 10, 1889.

Application filed May 2, 1889. Serial No. 309,410. (No model.)

To all whom it may concern:

Be it known that we, BENJAMIN SCHARDT and WILLIAM LUTZENBERGER, citizens of the United States, residing at Dayton, in the county of Montgomery and State of Ohio,

have invented certain new and useful Improvements in Electric-Light Supports; and "we dohereby declare that the following is a full, clear, andexact description of the invention,'which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the a ccompanying drawings, and to the letters of reference marked thereon, which form a part I 5 of this specification.

Our invention relatesto improvements in electric-light supports, the several features of which will be fully hereinafter set forth} The nature of our invention consists in a case or shield permanently suspended on a supporting-table, and in which is a spring and arm actuated catchto attach and detach an .arc lamp and connective parts in said case to make the requisite electric circuits for said are lamp, the same being raised and lowered by means of a cord and'pulley.

The mechanism is illustrated in the accompanying drawings, in which Figure 1 is a longitudinal central section of the arc-lamp support as suspended, with some of the interior parts shown in full and with the upper part of an arc lamp attached. Fig. 2 isa fragmentary view of the same at a right angle to Fig. l, with a portion in sec tion on line a": and with some of the parts omitted. Fig. 3 is a top view of the case. Fig. 4 is a front view of an insulator-guide. Fig. 5 is a horizontal section of the support on line .2, Fig..1.-- Like letters on the several figures designate like parts. v

A is a cast-iron case having lugs with concave surfaces on the top for bearings for the insulators o o, flanges at the bottom, the guide D nearly central in the case, and orifices for the bolts, which form pivots for the pulley 2 and the catch 4. The insulators o o are attached to the case by the straps u u, which are fastened to the case by screws. The supporting-cable w ispassed through the central orifices of said insulators, the ends of the cable being secured to posts on the opposite sides of a street, and thus the electric-light support is suspended. The grooved pulley 2 is supported near the top of the case, and over this passes the cord 1, which is used to raise and lower the electric lamp. The connection-piece 17 consists of two like parts, which are united by screws. The top is spherical and has longitudinal grooves to engage the cord. The lower end is likewise spherical, with a portion cut away, and within is a spherical 0rifice in which is held the head '7 of the supporting-rod 9, thus forming a ball-and-socket joint, which will give the requisite move-- ment when the lamp is swung by the wind. The rod 9 has a spherical head beneath a hemispherical part, with face downward, to engage the catch 6. Below the center is a shoulder, against which the block E is held by the forked nut 10. Within the ears of this nut is a pin, on which is suspended an arc lamp, the eye 18 embracing the same.

The catchG is suspended in the case on pivot 8, and to said catch is pivoted the disengaging-arm 4c, and this arm is held to said catch by the spiral spring 5. To the right of the case is attached the fiat spring 7, the use of which is to press the catch forward to en- 8c gage the supporting-rod.

This completes the description of the parts which support the lamp, and the operation is as follows: By pulling the cord the rounded connection part passes the rounded head of the catch, and as the hemispherical head of the supporting-rod passes the same is engaged by the catch, and the lamp is thereby suspended. To detach the lamp, the connection part is raisediuntil the spherical head has passed the disengaging-arm 4:- When this is done, the cord is loosened, the gravity of the lamp carryingdownward this arm. The same, engaging the guide D, carries the catch outwardly, as shown by dotted lines, and thus 5 letting the lamp be lowered to the ground by the attendant. As a consequence, the catch is held back until the connection part carries up the disengaging-arm, and the same is held above the guide in its normal position by the I00 spiral spring 5. To the flange of the case A is attached the shield B, of tinplate, circular in form and flaring at the bottom. Attached to the inner surface, as shown at Fig. 5, are four blocks of wood 0, which form insulatorguides for the block E. The guide'O (shown in Figs. 1 and 4;) holds within agroove of the same the connective bar 8, which freely moves therein. This bar tapers at its lower end to engage the spring connective plates 11, when the same is drawn down by its gravity'and the retractive spiral spring 18. On the front of the same is aprojection to engage the circular ring 14:. The flat spring 16 bears against the back of the same, and the other end of this spring is attached to the binding-post to which the line-wire S is connected. The wooden block E is held on the supporting-rod 9, and to its upper edge is attached the circular metallic ring 14, and to its lower edge is attached a similar metallic ring 15. The binding-post t of the lamp is connnected with the former by a conductingwire which passes through an orifice in the block. The bin ding-post t of the lamp is connected to the latter by a conducting-wire. The binding-post of the line-wire S is connected by a conducting-wire to the spring connective plate 13, which bears against the metallic ring 15. To the insulator-guides 0, near their lower ends, is attached the circular wire 12, and this is electrically connected to the line-wire S and to the spring connectives 11, attached to guide 0'. The connective bar 8 in its normal position connects with the spring connective plates 11, thus forming an electric circuit through the support, as follows: From main line S to circular wire 12, connective plates 11, connective bar 8, and spring connection -plate 16 to main-line wire S. This is the electric circuit formed when the lamp is detached, and as the lamp is being attached to the support the block with its ring 14 carries up the connective bar 8, thereby breaking the circuit through the support and instantaneously establishing a circuit through the helices and carbon candles of the lamp. The course of the circuit is from main line S, spring connective plate 13, circular plate 15 of the block E, to lampbinding post 15, through the lamp to binding-post .t, thence to circular plate 14:, connective bar 8, spring connective plate 16, and line-wire S to the dynamo, the source of the current.

Having fully described our invention,what we claim,and desire to secure by Letters Patent, is-

1. In an electric-light support, the combination, with a supporting-frame, of a catch pivoted thereto, guide on said frame, and disengaging-arm pivoted to said catch, arranged to be brought into contact with said guide and thus to disengage the catch when the lamp is lowered, substantially as shown and described.

2. In an electric-light support, the combination, with a supporting-frame, of a catchpivoted thereto, disengaging-arm pivoted to the catch, guide opposite said arm, and lampsupporting rod to operate said arm and thus throw the catch, substantially as shown and described.

3. In an electric-light support, the combination, with a supporting-frame, of a catch pivoted thereto, guide on said frame, arm pivoted to said catch arranged to be brought into contact with said guide by the lampsupporting rod when lowered, and spring operating on said catch to bring it into engagement with the rod when the lamp is raised, substantially as shown and described.

4. In an electric-light support, the combination, with a supporting-frame, of a catch pivoted thereto, guide D on said frame, arm pivoted to said catch, with spring or lug thereon to support the arm, lamp-supporting rod with hemispherical portion to engage said catch and having a spherical head, and spring 7, to actuate said catch, substantially as shown and described.

5. The combination of the case A, with lugs on top thereof having concave surfaces, the binding straps n, insulators 'v v, and cable m, to retain in position an electric-light support, substantiallyas set forth.

6. In an electric-light support, the combination, with the shield B, of insulating-guides C, circular wire 12, attached thereto in electrical connection with one line-wire, and sliding bar 8, in electrical connection with the other line-wire and arranged to connect with the circular wire when the lamp is removed, and thus to complete the circuit through the lamp-support, substantially as shown and described. k

7. In an electric-light support, the combination, with an insulating-block carried on the lamp, of metallic rings thereon insulated from each other, the one in electric connection with one carbon of the lamp and with one line-wire when the lamp is raised, the other in electric connection with the other lamp-carbon, and the sliding bar 8, in

electric connection with the other line-wire, arranged to shift with said block as the lamp is raised, and thus to break the circuit through the support and'complete it through the lamp, substantially as and for the purpose specified.

In testimony that we claim the foregoing as our own we aflix our signatures in presence of two witnesses. I

Witnesses:

B. PICKERING, SUMNER T. SMITH.

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