US897457A - Hanger for electric lamps. - Google Patents

Description

PATENTED SE-P'I'. 1, 1903.-

a. CUTTER. HANGER r011 ELECTRIC LAMPS.

APPLIOATIOI TILED JUIE B, 1006.

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PATENT OFFICE.

GEORGE CUTTER, OF SOUTH BEND, INDIANA.

HANGER FOR ELECTRIC LAMPS.

Specification of Letters Patent.

Patented Sept. 1, 1908.

Application filed June 6, 1906. Serial No-. 320,448.

To all whom it may concern:

Be it known that I, GEORGE CUTTER, a citizen of the United States, residing at South Bend, in the county of St. Joseph and State of Indiana, have invented new and useful Improvements in Hangers for Electric Lamps, of which the following a specification.

This invention relates to electric lamp hangers and more particularly to a hanger provided with a switch for cutting the lamp out of the circuit, so that the lamp can be handled by' the trimmer with safety, While the current is on the line. In devices of this kind no attempt has been made, heretofore, to provide insulation between the hanger and the overhead supporting bracket or other suspending means that will be in keeping with the high voltagesnow in common use. The prevailing practice is to carry the line wires upon the insulators mounted directly u on the metal casing of the switch, thus ma ing the insulation between the line wiresupportin'g bracket and the overhead supporting means depend solely upon the insu ating knobs on the bracket, which cannot be protected from the weather. Attempts have been made to cure this objection by pro viding additional insulatin means between the hanger and the over head supporting means,but owing to the multiplicity of parts these constructions have not come into general use.

It is an object of my invention to provide a single insulating means for adequately insulatin high voltage wires, when attached to the anger, from the overhead bracket or other supports from which the hanger is suspended, and also insulating the lamp from the switch, and these various elements from each other.

Other and further objects will a pear in the following descri tion and will particularly pointe out in the appended claims.

In the drawings :Figure 1 is a'perspective view of a lamp sup orted by my invention. Fig. 2 is a vertica section through the invention. Fig. 3- is a horizontal section through the casing surroundin the switch, and Flg. 4 is an inverted lan view of the device'with the wires and amp removed.

Referring more particularly to the drawings, 1 indicates a post provided with any suitable supporting means such as arm 2 with a cross arm 3 for the line wires 4. Depending from the arm is the device which 'orms my invention. ()11 this device, 5 indicates an insulating member having a depending annular flange 6, a central bore 7, annular deorcssions 8 and 9 respectively at the top 8.1K. the bottom of the bore 7 and four conductor bores 18. Fitted within the bore 7 is a tubular member 10 which is held within the bore by a nut 11 engaging screw threads upon the upper end of the said tube and ositionecl Within the dc ressions 8. he lower end of the tube is a so screw threaded to provide for its engagement by a cross arm 12. I

Cross arm 12- is provided with a disk 13 which on ages the lower screw threaded end of the tube 10 and rests within the depressions 9 at the lower end of the bore 7, said disk holding a backing 14 against the insulating member 5 to prevent the entrance of moisture to the tube 10. The disk being mounted in a de ression and the depending flange 6 surroun ing the disk assists in pre venting moisture entering the central bore. Depending from the cross arm 12 is the lamp securing means-15 which supports the lamp 16 of any suitable construction.

The line wires 4 lead from cross arm 3 on the post to insulators 17 on the ends of cross arm 12 of the device, and from the insulators through two of the conductor bores 18 in the insulating member 5, to the line wire contacts 19 of a switch located, for the convenience in manufacture, upon a separate porcelain plate 20 above the insulator 5. The construction of this switch is not claimed herein, but is fully described and claimed in my Patent No. 881,306, dated March 10, 1908.

The switch blade 21 is mounted'on a rotary minal, each line wire terminal for this latter purpose being formed with a portion 27 which overhangs one of the lamp terminals and the other line wire terminal. It will thus be apparent that when the switch blade 21 is in one position it will cut out the lamp and when in the other position it will establish a circuit through the lamp. The switch blade 21 is operated by a handle 28 on the lower end of the shaft 22 and within an open portion 29 in the cross arm 12. From the lamp terminals 26, the lamp wires 30 lead through the two remaining bores 18 of the insulator 5 to the lamp 16.

Surrounding the upper end of the insulator 5 is a cylindrical casing 31 which incloses the switch and which is itself closed by a removable cap 32 having an eye 33 by which the device is suspended from the support 2.

It will thus be seen that I have provided a unitary device consisting of a hanger, switch and a combined cross arm and lamp suspending means so arranged and constructedthat these various elements are insulated from one another and that the current cannot by any possibility-pass from the cross arm up through the hanger to the overhead supporting means.

Having thus described my invention, what I claim and desire'to secure by Letters Patent 1s:

1. The combination with the insulator having a depression in its under face, of a cross arm having a projecting portion fitted in said depression, a switch, and a switch operating shaft extending through the insulator and insulated from the cross arm, said shaft terminating short of the lower edge of the cross-arm and lamp suspending means carried by the cross arm.

2. The combination with the insulator having a depression in its under face, of a cross arm provided with a projecting portion extending into said de ression, the projecting portion of the armliaving an o ening, a switch, and a switch operating sha t extending through the insulator and terminating at one end in the opening of the pro ecting portion of the cross arm.

3. The combination of an insulator having a central bore and a plurality of conductor side of theinsulator and a switch operating shaft extending through the central bore.

4. The combination with an insulator having a depression in its top and in its bottom and also having a bore communicating with said depressions, of a tubular member disposed insaid bore, means in said top depression to sustain said tubular member, a crossoperating shaft exten lar member and ins 5. The combina ding through the tubuulated therefrom.

tion with the insulator ore, of a tubular member lower end of th switch mounted abov switch operating shaft tubular member and i The combinatio vided with a central bores, a cross arm s insulator, a switch side of the insulator, extending through tl' suspending a central bo depressions comm bore, of a tubular ore, means disposed in to secure the tubular 1 placement, depression a cured to the and having depression, a lator, a swi through the tubul therefrom, and la the cross arm.

8, The combination having a central bore one side of the insul at the opposite sid switch operating in packing arranged i bove said means, a

lower end of the tub a portion fitting i switch mounted a perating sh with the insulator a switch arranged at ator, a cross arm secured e of the insulator, and a ember extending through the insulator a switch arranged at cross arm secured n ulator, a switch ing through said p suspending means on the V 9. The combination with having a central bore one side of the ins e opposite side of the 1 operating member extend ore, and lam bination with the insulator a switch arranged at or, a cross arm secured f the insulator and a switch operathrough said bore prod located in the opening membe a cross-arm site side of the insula an'opening, a switch tending through said at one end in sai d opening 0 and lampsus pending mean 12. The combination with an insulator 11g acentral bore and a series of conduc-' tor bores, a switch arranged at one side of the In testimony whereof I affix my signature, insulator, a cross-arm arranged at the oppoin presence of two subscribing witnesses. site side of the insulator and provided wlth G C'UTTER an 0 ening, a switch operating member ex- 5 tending through said bore and terminating Witnesses:

at one end in said opening of the cross-arm, GEORGE OLTsoH, and a housing for the insulator and switch. A. D. HACK.

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