US1483934A - Lamp - Google Patents

Description

Feb. 19, 1924.

C. E. GODLEY LAMP Filed Feb. 5. 1921 CBILES E. GDDLEY, 0F DETisIT, MICHIGAN, ASSIGNOR '10 EDMUNDS & JONES COR- PORATION, OF DETROIT, MlCHIGAN, A CORPORATION OF NEW YORK.

Application filed February To all whom it may concern:

Be it known that 1, CHARLES E. GonLEY, a citizen of the United States, and residing at Detroit, in the county of Wa no and State of Michigan, have invente a new and Improved Lamp, of which the foling is a specification.

This invention relates to means for securing the lens rings to the bodies of electric lamps, particularl in lamps which are not provided with re ectors, and its ob ect is to provide resilient means for preventmg the rattling of the lens in the lens ring an of the lens ring on the body.

This invention consists of a lamp body and a lens ring attached to one end thereot b means of pins extending into bayonet sldts, together with resilient means directly engaging the lens to force it outward and so reduce a tension between the lens rmg an the body of the lamp.

5, 1921. Serial No. 442,639.

of the flange portion 4 of the body when till the parts are assembled, as shown in Fig.

4 and the spring therefore prevents the lens from rattling in its holder, it holds the pins 9 in the inner enlarged ends of the slots 5, and it prevents thelens ring rattling on the body, all through being tensioned to press the lens away from the body.

Until the lens holder is thus mounted on the body, the spring engages the has 9, but when the lens holder is positions the edge of the flange 4 presses the rear parts of the spring forward and increases the pressure of the spring against the lens and against the This invention further consists in the deb dy tails of construction illustrated in the accompanying drawing and particularly pointed out in the claims.

In the drawing, Fig. 1 is a front elevation and Fig. 2 is a side elevation of a lamp embodying the resent invention. Fig. 3 is an interior eevation of the lens ring. Fig. 4 is a section on the line M of Fig. 1. Fig. 5 is a similar section of a modified type of lamp. Fig. 6 is a front elevation of the lamp bed of this modification on a smaller scale. ig. 7 is an interior elevation of the lens ring therefor. Fig. 8 is a detail of the lens ring.

Similar reference characters refer to like parts throughout the several views.

Referring to Figs. 1. to 4 inclusive, 1 is a cylindrical body having arear end 2 provided with a central extension 3 to receive the sleeve which supports the light bulb. I prefer to enlarge the front end of the body into a flange 4 which is providedwith any desired number of bayonet slots 5, three preferred.

A. lens ring or holder consisting of the cylindrical band 6 and the curved ed e 7 supports the lens 8 and pins 9v exten inwardly from the band 6. A circular undnlatoryspring 10, preferably of sheet meta1, has as many high or forward parts 11 contacting with-the lens to hold it in position in its holder and as many low or rear in the modification illustrated in Figs. 5 to 8 inclusive, the body consists of a cylinder 18 and end 19 provided with an extension 20. The lens ring or holder 21 has a beaded outer ed e 22 to support the lens 23 and .it has the ayonet slots 24 to receive the pins 25 mounted in the forward end of the body 18. A circular undula-tory spring 26 is of about the same construction as the spring 10 above described and its rear or low portlons are in contact with small struck-up tongues 27 until the lens holder is mounted on the body. In this case again, the spring holds the lens in the lens holder.

When the lens holder is slipped into the body, the pins 25' on the body enter the bayonet slots 2d, and, asthe lens holder is turned, they slide along these slots, engaing the rear portions 28 of the spring and ii ing them from the small tongues until the pins reach the notches 29 at the inner ends of theslots. The pressure of the sprin holds the parts in this position until consierahle turning stress is applied to the lens holder. Here again, the spring presses against the body and the lens and its tendency is to force them apart.

The small extensions 3 and 20 form no part of the present invention, nor do the holes 30 through which screws may be passed to se cure the lam s, nor the strips 31 of celluloid held in position over the nnening 32 by means .of ears 33. The several details of construction of the lamps shown may all be modified by those skilled in the art without departing from the spirit of my invention as set forth in the following claims.

I claim l 1. In a lamp, the combination of a cylindrical body, a lens holder fitting one end of the body and secured thereto byv pins and bayonet joints, a lens within the holder and a circular spring ring of thin sheet metal contacting with the body and with the lens directly at a plurality of points to cause pressure between the lens and the lens ring and between the lens ring and the body.

2. In a lamp, the combination of a body having a cylindrical open end, a lens ring fitting said open end, a lens within the. lens ring, means whereby the lens ring may be attached to the'body, and a circular spring ring of sheet metal bent to alternately and directly engage the end of the body and the lens at a pluralitv of points to cause pressure between the lens and the lens ring and between the lens ring and the body.

3. In a lamp, the combination of a body, a

lens, a lens holder attached to the body, and y drical body, a lens holder fitting the body and having an inturned outer edge, a lens within the holder and supported by an edge thereof, and a circular undulatory spring ring of sheet metal engaging the lens and thebody directly alternately at a plurality of points to hold the lens in position in its holder, said body and bolder being connected by pins on one extending into bayonet slots in the other, the inner ends of the slots being enlarged and the pins being held in the enlarged ends by means of said spring.

CHARLES (E. GODLEY.

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