US990514A - Electric lamp. - Google Patents

Description

E. BEAUGOUDRAY & E. STOLTZ.

ELECTRIC LAMP.

APPLICATION FILED 0013,1910.

990,514. "Patented Apr.-25,;1,9l1.

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ELECTRIC LAMP.

APPLICATION FILED OCT. 3,1910. 990,514, Patented Apr. 25, 1911.

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EMILE BEAUCOUDRAY AND ERNEST STOLTZ, OF COVINGTON, LOUISIANA.

ELECTRIC LAMP.

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To all whom it may concern:

Be it known that we, EMILE BEAUCOU- DRAY and ERNEST S'roLTZ, citizens of the United States, residing at Covington, in the parish of St. Tammany and State of Louisiana, have invented certain new and useful Improvements in Electric Lamps, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to improvements in electric lamps such as are used in bakery ovens, and especially with reference to the provision of an electric switch mechanism for automatically turning on and off the current from the lamp according to the direction in which the revoluble lamp carrying element is turned, so as to avoid the necessity of manually operating a switch for turning the bakery light on and off, the invention consisting in the construction, combination and arrangement of devices, hereinafter described and claimed.

In the accompanying drawings-Figure 1 is a perspective view of an electric lamp such as are used in bakery ovens, provided with switch mechanism embodying our invention, and showing the lamp in unlighted position. Fig. 2 is a sectional view of the same on the plane indicated by the line aa of Fig. 1, and Fig. 3 is a vertical central sectional view of the same. Fig. 4 is a detail perspective view of the block which is attached to the movable element of the lamp.

For the purposes of this specification, we show in the accompanying drawings an electric lamp for use in a bakery oven, the hood or casing 1 thereof being open on its outer side as at 2, and being provided in its semicircular inner wall with an opening 3 which is presented to the interior of the oven.

The revoluble member 4 of the lamp is cylindrical in form, disposed in the casing or hood 1, and has a vertical shaft 5 the bearings for which are in the upper and lower sides of the said hood or casing. The incandescent electric lamp 6 of usual form is mounted in the said revoluble member 4, and on one side thereof is a reflector 7 which is opposite the opening 8 in the said revoluble member 4, which opening, when the member 4 is turned in one direction, registers with the opening 3 of the hood or casing 1, so as to uncover the said opening 3, and permit the light of the lamp to shine Specification of Letters Patent.

Application filed October 3, 1910.

Patented Apr. 25, 1911.

Serial No. 585,114.

therethrough, the rear wall 9 of the said member 4, when said member 4 is turned in the reverse direction moving across and closing the said opening 3, so as to cut off the light of the lamp. In other words, the opening 8 of the member 4 which uncovers the electric lamp, may be disposed either opposite the opening 3 of the hood or casing 1, or in the reverse position with reference thereto.

In accordance with our invention, we pro vide an electric switch mechanism which operates automatically to close the circuit including the electric lamp 6, when the men1- her 4 is turned in the reverse direction, so as to dispose its rear wall opposite the said opening 3. An insulating block 9 which is rectangular in form and is preferably made of porcelain, is secured to one side wall of the casing 1, at a point above the member 4. The inner end of the said insulating block is cut away on its outer side to provide a recess 10. The said block 9 is provided with openings 11 through which the feed wires 12 extend, and is provided with apair of contact arms 13 which are secured thereto by suitable binding posts 14 to which the feed wires are connected. The said contact arms extend longitudinally of the block 9, and are disposed partly thereon and partly over the recess 10, the outer ends of the said contact arms being curved toward the block 9, and projecting across the recess 10. We also provide an insulating block 15 which is segmental in form and is provided at its lower end on its rounded side, with an outstanding fiange 16. The said block 15' bears on the upper side of the revoluble member 4, and is secured thereto, by a suitable screw 17, which passes through the flange 16 and also through the top of the member 4, the said block 15 being secured on the member 4 with its curved outer face concentric with said member 4, and its post near the periphery thereof. On the said curved face of the block 15, is a pair of contact arms 18, each of which is secured thereto, at one end, by a bolt 19, the said bolts being provided at their inner ends with attaching devices 20-, to which the conducting wires of the lamp 6 are electrically connected. The contact arms 13 of the fixed block 9 which is secured to the hood or casing 1, incline downwardly, and the arms 18 of the block 15, which are attached to and move with the revoluble member 4:, are disposed at such points thereon that when the member 4 is turned by means of its actuating rod 21, so as to dispose the opening 8 opposite the opening 3, the contact arms 18 of the said block 15, engage and effect sliding contact with the curved ends of the arms 13 of the block 9, so as to close the circuit in which the lamp 6 is included, and thereby cause the lamp to be lighted and to shine through the opening 8. Owing to the provision of the recess 10, in the block 9, and the spring of the contact arms, the closing of the electric lamp circuit is assured when the member 4 is turned in the required direction to dispose its opening 8 opposite the opening 3. "When the member 4c is turned in the reverse direction by means of its actuating rod so as to dispose the rear wall or side of the member a opposite the opening 3, the block 15 moves away from the block 9 and the contact arms 18 become disconnected from the contact arms 13, so as to break the circuit including the electric lamp 6, and hence put out the light.

It will be understood from the foregoing description, that our improved switch devices operate automatically to cut in or cut out the lamp according to the direction in which the revoluble lamp carrying member is turned by its hand rod, so that the electric lamp is lighted and used only when it is necessary to look into the oven. Moreover, by means of our improved switch devices, it is not necessary for the baker to operate a switch when using the lamp, it being only necessary for him to turn the lamp into or out of lighting position.

We claim 1. An oven lamp comprising a fixed casing member, and a revoluble lamp carrying member mounted therein, in combination with an insulating block attached to the fixed casing member, and provided with electric contact arms, and an insulating block attached to the revoluble lamp carrying member, and provided with contact arms movable by said lamp carrying member into and out of engagement with the first mentioned contact arms.

2. An insulating block for attachment to the fixed hood or casing of an oven electric lamp, and provided with a recess extending across the same, and electric contact arms extending across the said recess, in combination with a segmental insulating block for attachment to the revoluble member of the electric oven lamp, the said segmental insulating block being provided on its curved surface with electric contact arms, movable by the movement of the said revoluble element, into and out of engagement with the contact arms of the first mentioned block.

In testimony whereof we hereunto attix our signatures in the presence of two Witnesses.

EMILE BEAUCOUDRAY. ERNEST STOLTZ. WVitnesses:

FRED J. Human, Jr., G. F. STRAIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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