US2056511A - Electric light guard - Google Patents

Description

Oct. 6, 1936. R. A. FENZL ELECTRIC LIGHT GUARD Filed Oct. 1, 1954 Patented Oct. 6, 1936 UNITED STATES PATENT OFFICE ELECTRIC LIGHT GUARD Rudolph A. Fenzl, Houston, Tex.

Application October 1, 1934, Serial No. 746,368

2 Claims. (01. 240-112) This invention relates to an electric light the outer end of the sleeve around the wiring to guard. form a gas-tight joint.

An object of the invention is to provide a guard The globe 3 and the electrical connections will of the character described having a socket to all thus be enclosed in a gas-tight compartment 5 receive a conventional electric light globe, and by the shield 5 and the hood l2, and the stuiling provided with means for shielding the globe and box it so that when the light is used in oil tanks, the electrical connections to exclude gas thereor oil tank cars, or'at other places where there from when the electric light is used in the presis explosive gas, or explosives, the explosive will ence of an explosive gas. be excluded from all electrical connections which When so shielded and protected, the light may would be liable to create a spark and cause an 10 be safely used in oil tanks, and tank cars, when explosion. it is necessary to inspect, or repair, the interior If desired, the guard may be equipped with a thereof without danger of explosion, U-shaped bracket I 5 having a pivotal connection While this type of electric light has been espeto the h l2 as wn n o w i h a li e m y cially designed for making interior inspections of be connected for suspending the light in a tank, 15

oil tanks and tank cars, it is of general utility for tank car, or similar location. use in the presence of an explosive gas. What I claim. is:

With the above and other objects in View, 1. In combination, a supporting plate, a globe the invention has particular relation to certain OC t 0 t p a a e t light globe n e novel features of construction, arrangement of oc t, a h d o ke 1 the p ate, a tre u d 20 parts, and use, an example of which is given in Sh e d a d and pa frOm the globe and this specification and illustrated in the accomew i t t e Shield S t d forming a panying drawing, wherein: tight compartment for the globe, electrical wir- Figure 1 shows a sectional view of the guard, ing Connected to the globe Socket. and a o and having a marginal flange fitted against the plate 25 Figure 2 shows a front elevation, and enclosing the connections, said hood forming In the drawing the numeral I designates a gas tight joints w th plate d w n to f rm socket plate carrying the conventional type of a g tight amber for the electrical connecsocket 2 to receive the electric light globe 3 in the tions, a ua d a ound the shield, one end of which usual manner. Electric wiring 4 is connected to has an internal flange fitted a t the p ate 30 the socket in the usual way for the supply of the and Securing means passing through Said fl ge current to the globe. and plate.

A translucid shield 5 surrounds the globe 3 In combination, an attaching p a So et and is screwed into the internally threaded socket thereon, n electric light globe in t cket, elec- 6 of the plate I, thus forming a gas-tight shield trio wiring connected to the socket, a translucid about the globe. shield around the globe and detachably secured There is a forwardly flared guard I whose outer the plate and m ng a gas-tight c mp end upports skeleton 8 which is detachably ment in which the globe is located, a hood on secured to the f wa d end f the guard 1 by the opposite side of the plate from the globe and 40 suitable Set Screws as 9 or by other Suitable whose margin is outturned and fitted against the 40 The other end of the guard 1 has the plate and forms a gas-tight joint therewith, said inwardly turned flange H] which surrounds the h bemg applioxlmately cone'shaped and socket 6 and is bolted to the margin of the plate t sleeve at Its apex through WhiFh the Wirby means of sta isstate ts .5

e n e wiring an ormin on the opposlfte Side of the plate I m gas-tight joints with the sleeve and Wiring 3 guard 1, there is a hood l2 whose margin is guard having an intumed annul fl clamped to the margin of said plate by the bolts ar ange at one l This hood I f m end fitted against the plate and whose other end 15 Pre era Y D and is flared, said guard surrounding the shield and at its apex has a sleeve l3 through which the wirsecuring bolts through the flanges and plate. 50

mg 4 passes, and a stufling box I4 is secured in RUDOLPH A. FENZL.

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