US1422525A - Lamp ring - Google Patents

Description

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Patented July il.. 1922.

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LAMP RING.

APPLlcATloN FILED JULY 29, |920.

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WILLIAM A. BELL, OF KENOSHA, WISCONSIN, ASSIGNOR TO C. M. HALL LAMP COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

LAMP RING'.

- Application filed July. 29,

To allwhomz't may concern.' n

Be it known that I, WILLIAM A. BELL, a citizen of -the United States, residing at Kenosha, in the county of Kenosha and State of Wisconsin, have invented certain new and useful Improvements in Lamp Rings, of which the following is a specification.

My invention relates to improvements in lamp rings, and especially has reference to devices for locking in position the glazings of lamps such as may be used on self-propelled vehicles.

The principal objects ofthe invention are -to provide an improved ring of the class described, which 'may be conveniently utilized in connection with devices for sealing the interior ofthe lamp against vingress of moisture, dirt, or` deleterious gases; to pro vide an improved arrangement ofthe class describedwhich may readily be employed in connection with existing designsof vehicle lamps; to provide an improved arrangement whereby the ring may be readily removed to permit removal of the lamp glazing when access to the interior of the lamp is'desired;

' Yto provide an arrangement so organized that the ring maybe securely, clamped lin position by manipulating a single locking member; to'y provide an improved arrangement Y awhichwill conform to the ornamental lines ofthe lamp without'detracting from the appearance thereof; 'tov provide "a construction which shallbesimple and economical in design .and'jmanufactura andfeflicient in use; and, in; general, to provide an improved lamp ring 0f the character referred to.

A In the drawings, which illustrate my invention as applied .to ran" automobile head- Fig. 1 is a partial axial or vertical section showmg the lamp in elevation;

2 is a front elevation of the lamp l shown in Fig. 1, certain parts being broken away the better to illustrate the mechanical construction; and y Fig. 3 `is a section taken on the line 3-3 of Fi 2.

Refgerring to the drawings, it will be observed' that the lamp is constructed with a main outer casing 10 having an inner parabolic reflector 11 forming a cavity or recess 12 in which is enclosed an electrical lamp bulb 13 having a filament 14 suitably placed Specification of Letters Patent.

. at, or adjacent to,

'of rather flexible material, such 1920. Serial No. 399,845.

the focus of the parabolic reflector 11.

In the particular lamp shown and descr1bed, the main body or casing 10 is made with a lower subsidiary casing portion 15 which encloses a minor parabolic, or other shaped, reflector 16 enclosing a lamp 17 which is of less candle-power. than the lamp 13 and is used inplace of the main headlamp when the car is standing or when driving through city streets which are reasonably well llluminated. The upper glazing 18 constitutes la closure for the front of the recess 12, and the lower glazing 19 serves the same purpose with reference to the lower or minor recess 20 formed by the reflector 16.

The main reflector 11, as shown in the drawings, is formed with a circular edge bead 21 from which projects an annular flat flange 22, between which and the glazing 18 there is interposed a gasket 23 constructed .as heavy paper board. To the outer edge of the stamped sheet metal body or casing 10 there is suitably united an annular stamped metal border frame portion 24, said union preferably being facilitated by suitably shaped interlocking flanges 25 and 26 formed respectively on the main body 10 and the said border frame 24.

The border frame portion 24' is made with an intermediate forwardly-facing part 27, the inner edge of which is bent inwardly, as shownat 28, to constitute a circular recess which is of large enough diameter to receive freely the flange 22 of the reflector, the gasket 23, the glazing 18, and the ring 29. The inner end of said cylindrical flange 28 is bent at right-angles, as shown at 30, in order to form a flat annular terminal flange portion located behind the reflector flange 22, and on said fiat rear flange 30 there are secured by suitable means, such as rivets 31, a plurality of plate springs 32. Each of said springs 32 is made with oppositely located circumferentially-eXtending spring arms 33 which lie behind the reflector flange 22, engage the latter, and tend to force the reflector out of the lamp. The said springs 32 thus serve to clamp the gasket 23, glazing 18, and reflector flange 22 tightly in sealing engage ment so that the reflector cavity 12 is rendered gas-tight and moisture-proof.

The locking ring 29 obviously serves to.

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locate the glazing 18, operating as a stop to limit the'outward movement' of the parts acted upon by the resilient ni'nembers 32, said locking ring 29 constituting one of the principal features of my invention. The means for locking said ring 29 in position in the lamp frame comprises, in the present instance, interlocking members carried respectively by the frame and the ring, lthe locking members being disengageable so that the lamp ring may be removed from its frame whenever it is desired to gain access to the interior of the illuminant cavity 12. Preferably, I employ a plurality of'sets of such interlocking members. In the case of the lmajor headlamp l0 I have shown three sets of locking members, and inthe case of the lower casing, I have indicated only two sets of interlocking members. It will be observed, however, that tlie principle employed is somewhat similar in the case of each lamp.

In the present instance, in connection with the main locking ring 29 I have shown two -sets of upper interlocking means which are non-adjustable, and a lower interlocking means which may be adjusted or disengaged to release the locking `ring at the pointl where said adjustable interlocking member is located,-in the present instance, at the bottom of the ring. The releasing of the bottom of the rin enables the lower portion thereof to be shifted outwardly of the lamp,` and the two upper sets of interlocking means are so located that after the lower end of the ring has been pulled away from the recess, the ring itself may be lowered vertically to release the upper locking members, after which the ring is free to be moved bodily outwardly away from the lamp, permitting removal of the glazin i It will e observed that when the lower part of the ring 29 is pulled outwardly in order to free saine from the lamp frame, the upper end has a tendency to move inwardly, due to the locking ring member functioning as a lever pivoted upon the two points of support represented by the upper interlocking members. Such inward movement of the top portion of the ring is of course permitted by reason of the resiliency of the springs 32, which preferably, in order not to interfere with such movement, may be located adjacent to, or slightly below, the lfixed interlocking members.

As to the fixed interlocking members, these may comprise small metal stampings 34 having inwardly-beiit lugs 35 extending through the cylindrical flange 28 a. sutlicient distance -to enter slots 36 punched through the cylindrical outer wall 3T of the hollow locking ring 29. It may be observed in passing that the said hollow locking ring 29 is made with a curved annular flange 38 conforming to the general design of tlielamp and having its-inner end engaging the front of the glazing 18. As'observed in Fig. 2, the slots 36 are of suflicient circumferential length to permit the lugs 35 to be disengaged when lthe lamp ring is shifted laterallyor downwardly towards the adjustable locking point. The adjustable locking member may consist of a rotary catch 39 keyed to a horizontal pin or screw 40, the head 41 of which is eX- posed at the front of the lamp frame and is slotted to enable the said pin 40 and catch 39 to be rotated by a screw-driver or similar tool. The catch proper 39 comprises a' suit able stamped washer-like part having a por. tion of one of its sides cut away so that whenA the pin 40- is turned to the proper position, the locking ring at that point is released. Under normal conditions,the catch is in the position shown in Fig. 2, in which position the circular portion of the washer extends through a slot 42 cut in the cylindrical flange 28, and also into a slot 43 punched inthe cylindrical Harige of the -removable locking ring 29.

It will be observed that the lower casing for the minor lamp 17 is constructed along substantially the same lines as the up er or major casing, and that the catch mem er 39 cooperates with the upper part of the minor locking ring 44 in the same manner in which the catch cooperates with the upper locking ring 29. As shown, they ring 44 has an equivalent cylindrical portion 37a, to which is united an upper lug 45 perforated to admit the catch 39. On the lower part of said ring 44 there is also united an angular lug 46 which is arranged to enter an aperture 47 punched in the cylindrical wall of the lower glazing recess. The lower ring 44, however, being of relatively small diameter, I have not found it necessary to use more than a single set of lixed or rigid interlocking members for the opposite side of the ring, and also only a single pair of springs 55 need be employed.

The described details of construction are merely illustrative of a single phase of my invention, the scope of which should be determined by reference to the appended claims, said claims being interpreted as broadly as possible consistent with the state of the art.

I claim- 1. The combination of a lamp casing member, a glazing constituting a front closure for said casing,a locking ring member insertable in said casing over the glazing, and means for retaining saidl ring in the casing comprising a lplurality of locking means respectively located on opposite sides ol' the casing, each of said locking means comprising a lug and an opening therefor respectively provided on said members, one of said lugs being shiftable to permit insertion or removal of the ring,

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2. In combination, a lamp casing melllber provided with an annular recess surround-4.

ing the opening, a glazing in said recess constituting a closure for the casing, a lock# ing ring member insertable 1n said Yrecess over said glazing and fitting said recess' and fbeing provided atthe `bottom 'of the recessl means for retaining said ring in saidvrecess comprising a` plurality" 'of locking means respectivelylocated onopposite sidesof the diameter of the recess, each` of said locking means comprising av lugand an opening therefor respectively provided on the said members, one oi said lugs being shiftable to permit insertion or removal of the ring.

3. In combination, al lamp casing member 'provided with an annular recess surrounding the opening, a glazing in said recess con-4 stituting a closure for the casing, alocking ring member insertablein said recess over said glazing and fitting said recess and means for retaining said ring in said recess comprising a pair of lookin means respee tively located on opposite si es of the diameter-of the recess, each ofsaid locking means.

comprising a. lu and an opening therefor respectively provided on the 'said members, one of Vsaid'lugs being shiftable to`permit insertion or removal of the ring,'the casing with an inturned flange having resilient means inter osed between the glazing and said flange -orholding the glazing in contact with the ring.,V I s ,4. In combination, a"'lwlshaped lamp casing provided at its front end with a cylindric reentrant ang'e member, said liange having at its inner end Van inturned iiange spectively provided on said members, a

glazing' insertable in said recess and engaging said ring,-ja reflector located inthe casing and'j-hawfingY anouter circumferential flange in the 'recess to' overlap 'saidl inturned flange andiresilient means `interposed between the reflector flange and the inturned flange for forcing said reflector and said glazing against said ring, one of said lugs being shiftable with reference to its'opening,- to permit insertion or removal of the ring. A s

WILLIAM A.. BELL. p

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