US797250A - Guard for incandescent electric lamps. - Google Patents

Description

No. 797,250. PATENTED AUG. l5, 1905.

C. P. ANDERSON.

GUARD FOR INGANDESGENT ELBGTRIG LAMPS.

APPLIUATION FILED MAB.. 17, 1905.

ATENT lilllil.

Specification of Letters Patent.

Patented Aug. 15, 1905.

Application filed March 17, 1905. Serial No. 250,673.-

Be it known that l, @Hannes P. Annnnson, a citizen of the United States, residing' in the city of St. Louis, in the State of l\/[issouri, have invented certain new and useful improvements in Guards for incandescent Electric Lamps, of which the following is a Yt'ull, clear, and exact description, reference being had to the accompanying drawings, 'forming part oi lthis specilication.

My invention relates to a guard for protecting the bulbs oit incandescent electric lamps and preventing' breakage thereof by contact with any object toward which the lamp may be moved while hangiiig suspended and also whereby excessive vibration of the lamp-bulb is avoided.

Figure I is a perspective view oi my lampguard. Fig. Il is a view of the socket of a lamp with the upper end of my guard applied thereto and shown in vertical section. Fig. lll is a cross-section through the ends ol the clamp-band of the guard. Fig. lV is a crosssection through a portion of the guard, as seen in Fig. I. Fig. V is a cross-seetion through a modilication ot my guard. Fig. VI is a perspective view of a portion o'll the wires in the modilied form of guard shown in Fig. V. Fig. VII is a cross-section of another modification.

1 designates a plurality ot longitudinal main wires of myguard, which are disposed in a eircleand are inclined inwardly from verteXes 2 intermediate ot the ends of the guard, so that the circle of the guard is greater at a point intermediate of the ends of the guard than the circles at the ends ot' the guard. At the angles formed by the vertexes of the wires il. is located a spreading-ring 3, through which the wires 'l are threaded. This spreading-ring being' located at the point mentioned is held from movement longitudinally of the guard upon the wires, due to the wires being' inclined inwardly in each direction therefrom, and therefore the spreading-ring will maintain its position without any securing means, although, if desired, the ring may be soldered to the wires.

4 is a lower ring through which the lower ends of the longitudinal wires l are threaded and secured by having their ends bent around said ring, as seen in Fie'. I. This lower ring is of sufficient interior diameter to permit of a lamp-bulb being passed therethrough to have its neck seatedy iu the lamp-socket with out the necessity of removing the guard from the socket to which it is fitted in the manner to be presently explained.

5 designates a clamping-band having ends (i and 7, through which a screw 8 is inserted, the end 7 being of loop lorm and tapped for the. reception oi the threaded end ot said. screw, thereby aliording greater bearing lor the screw when it is introduced into the band. '.lhe upper ends of the longitudinal wires Il. are threaded through the band 5, and the terminations l of the wires are bent down wardly at the interior ot the band, as seen in Figs. l and lI. These terminations are thereby disposed in a circle within the band in a position to bear against the neck A ol' the lamp-socket and their lower points by engaging against the usual bead B upon the socket-neck serves to ettectually hold the clamp-ring ilirommove ment on the socket alter it has been applied thereto. 1t will be seen that by theconstruction described the terminations ot the longitudinal wires may be made to lit above the socket-bead irresijiective 01? the degree olE space surrounding the socket above the bead to which a clainping-band may be applied.

9 designates a cusinon-supporting ring located interior ot the spreadingering 3 and concentric therewith, the said ring 9 being secured to the spreading-ring by arms 10, ete tending outwardly from the ring 9 and secured. to the spreading-ring.

l1 is a coiled cushion mounted upon the ring 9 and which is adapted to surround and hear against the portion olf the lamp-bulb oli greatest diameter, whereby vibration is citeetually prevented. that the coiled cushion be located around the lower portion ot the bulb, which is that having the greatest diameter. The cushion-spring is also ot' material utility in avoiding sudden jar to the lamp-bulb due to the guard coming in contact with any object.

.lt will be seen that in the use of a guard constructed in accordance with my improvement the guard may be applied to a lampsocket and Athereafter lamp-bulbs may be introduced into and withdrawn from the lampsocket without any necessity whatever oi removal of the guard, this being due to the lower ring l oi" the guard being oif sutiicient diameter to permit o'l the lalnp-bulb being freely passed therethrough Yfor introduction into the socket and withdrawal therefrom. By this arrangement l avoid any manipulation of the '.lo this end it is necessary.

guard and obviate the danger of the guard being taken ofi and lost or displaced when a new lamp is' to be put into the socket and also avoid making the guard in sections to permit of its being opened to insert and remove the lamp-bulbs.

In Figs. V and VI, I have shown a modification in which .the longitudinal wires lb are of the same configuration as the wires l. In this modification, however, I utilize a spreading-ring 3b, that is indented at intervals to receive the longitudinal wires instead of threading -the wires through the iing. The lower ring Ib is also indented at intervals to receive the connection of the lower ends of the longitudinal wires instead oil threading' them therethrough. In this modification I utilize a cushion-ring 1lb, that is of rectangular shape and which is wrapped around the spreadingring 3b at the junctions of the longitudinal wires therewith, as seen in Iilig.V V` this ring being adapted to bear directly against the lamp-bulb in lieu of the coiled cushion ll.

In Fig. VII, I have shown another modification in which the spreading-ring 3 is of twisted form and the longitudinal wires lC are threaded through eyes in said ring. This modification corresponds otherwise to the modification shown in Figs. V and VI in having a lower ring 4I, to which the longitudinal disposed in a circle, a clamp-band for securing said wires to a lamp socket, a continuous spreading-ring interposed between the ends of said wires and to which the wires are iitted, a continuous cushion-supporting ring secu red to said spreading-ring, and a continuous coiled cushion surrounding said supporting-ring and arranged to bear against the lower end of the lamp-bulb, whereby the lamp-bulb is held from vibration, substantially as and for the purpose set forth.

CHA@ P. ANDERSON. In presence of- E. S. KNIGHT, NELLin V. ALEXANDER.

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