US1186605A - Lamp. - Google Patents

Description

L. L. PFEIFER LAMP.

APPLICATION FILED vac. 20, 1915,.

l 1 83 605. 7 Patented June 13, 1916 v 4 3mm w-ituuoow KW v I I.

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eo-L. .PFEIFEIt," or COLUMBUS.OHIO,VAS$IGNQRJTO THE JOHN BROWN MANUFAC...

TUBING COMPANY, oF "c0LUMBU s, 01110, A CORPORATION or 01 110.

To all whom it may concern Be it known thatI', "lino L. Prmrna, a citizen of the United States, residing at Columbus, inthe county of Franklin and State" of Ohio, have invented'certain new anduseful Improvements in Lamps, of which the following is a specification.

This invention relates to' lamps and aims particularly to provide a type of'lainp which is serviceable or adaptable as automobile headlights. In automobile headlight construction, one of the essential features to guard against is the possibility of rattle and the admission of dust or moisture to the refleeting surface. The former is bothersome, in that the noise attending rattle is undesirable and further causes an" unnatural wear of the parts; while the latter causes thedeterioration of the reflecting properties of the reflector thusdeci-easin "the amount of light cast upon the roadway ahead.

It is therefore, the main object of this invention to provide a peculiar construetion of attachment between the lamp body and its reflector and the lens supporting structure, -whereby these three component parts are securely held in position .to preclude the possibility of rattle and vibration.

Essentially, this results from the shelf structure surrounding the open end of the lamp body and the flange projecting outwardly tram the large end of the reflector body.

The preferred embodiment of my invention is shown in theaccon'ipanying sheet of drawings, in which similar characters of reference designate corresponding parts, and in w-hichz' I Figure 1 is a cross section taken through one of my lamps, Fig. 2 isa section taken on line 22 of Fig. 1 and looking in the direction of the arrowsQFig. 3 is a section taken on line 33 of Fig. 1 and looking in the direction of the arrows, and, Fig. at is a section taken on line 41% of Fig. 1 and looking in the direction of the arrows.

In these several views, the lamp body is designated by the reference numeral 1 and its general outline is such as will conform gacefully with the shape of the parabolic reflector shown at 2. The outer end of the body 1 is open, as is shown, and is bounded member designated t. It will be noted that the two legs of this angle member are at Application filed December 20, 1915. Serial No. 7,772.,

Specification of Letters Patent? QPgttentefl June 13, 1916.

'which flange is provided with a bead 7,

in which the dust cord 8 seats itself. The outer edge of the flange is also then turned down, as is shown at 9, this down-turned portion beingv preferably rounded as is shown, although this rounded structure is not absolutely essential. From an inspection of Fig.1, it will be noted that the diameter presented by. the outermost edge of the flange 6. is larger than the'di'ameter presented by the innermost edge of the shelf 5 and in fact, it is desired that the down turned portion 9 of the flange 6' shall have its. bearing contact on the outer edge of the flange 5. serve as a compression member to cooperate with the lens supporting structure now to be described, in order that this lens supporting structure may "be heldin firm'engagement with the remaining structure. and also pre- -vent the ingress of dirt and moisture.

.The iens supportingstrncture comprises an outer ring 10 of somewhat larger di-- ameter than the diameter ofthe cylindrical portion. 4 of thelamp body and is o'fany desired configuration. This ring is preferably lined 'avith a-strap 11, one leg of which is shaped to snugly fit the cylindrical portion 4, while the remaining portion is bent at right angles as shown at, 12 and then again bent atrightangles as is shown at 13 torest against the inner surface of the ring 10. The diameter presented by the bend 13 is greater than the diameter pre- ,sented by the edge 14 of the ringlO and. it

is in this space thatthelens 15 is seated. Portions of the leg 12 are stamped out to form tongues 16' and these tongues are then bent over the edge of the lens 15 to r'orm the means of securely holding this lens in position.

It will be noted that the dust cord 8 is located in a bead which is of a considerably smaller diameter than the diameter of the turned down portion 9 and consequently by bringing the lens supporting structure into tight engagement with this dust cord, so as to compress it slightly, the reflector Wlll also be held in solid engagement with the lamp supporting structure. Because of the distance between the points of engagement of the rim or turned down portion 9 of the body 1 and the lens Supporting structure with the cord 8 any slight inequalities or imperfections of workmanship may be compensated for by the slight bending or dis- .torting of the various-metallic parts when tion of the reflector itself is cut out as is shown at 18 to accommodate the free passsage of the reflector over the hooked portions 19L After the reflector has" been set in position by passage over these hooks, the lens supporting structure itself may be locked into engagement with the hooked portions 19 by the proper placing of this lens supporting structure to the position shown in Fig. l wherein the hook portions 19 pass through the cut out portions 20 in the leg 12 of the lining member 11. A slight rotative movement then bringsthe hook portion 19 into the space between the member ll and the'outer ring 10, thus bringing it into holding engagement with the portion 12 of the member 11. Thishook may also be provided with a cam portion 21 if desired and the member 11 is provided with a slight depression such as is shown at 22 whereby the user is assured that the lens supporting structure may not accidentally become disengaged.

Because of the distance between the bearing points of the reflector on the body portion and the lens supporting structure on the reflector, all of the component parts may be securely held in position if the hook members are properly located to wedge'themselves into engagement with the lining member 11 located in the ring member 10. By the. proper degree of compression of the dust cord 8, all dust and moisture may be excluded and'a lamp of comparative cheapness may be provided.

\Vhat I claim, is: 1. In a lamp, a body member having a open end, a shelf around the open portion, areflector located within said body and inner portion free of said shelf, a lens and.

lens support, and connectingmeans for holding said lens sitpport against said reflectorflange.

-2. In a lamp, a body member having an open end, a shelf around thegpen portion, 1

a reflector located within said body and pro-' 'vided with a flared outwardly \xtending flange, said flange being of a larger diameterv than the inner diameter of said shelf,

'the edge of said flange being turned down to rest on said shelf, a lens and lens support, and connecting means for holding said lens support against the reflector flange, the

bearing contact of said support on 'said .flange being inward of the support of said flange on said shelf.

3. In a lamp, a body member having open end, a shelf around the open portion, a reflector'having suitable spaced cut-out portions located within said body and pro-" vided with a flared outwardly extending flange, said flange being of a larger diameter than the inner diameter of said shelf, the edge of said flange being turned down to rest on said shelf, hooks carried by said body and extending through the cut out portions of said reflector flange, the hook portions of said hooks projecting in a direction substantially parallel with said flange and shelf, and a lens and lens support, said lens support being constructed to cooperate with said hooks to securely hold it in position against said reflector flange.

4. In a lamp, a body member having an open end, a reflector located within said body,

a lens support, means for detachably connecting said lens support in connection with said body, and means for holding the lens in' position in said supportcomprising tongues stamped out of the metal lens support and turned over to grip the edge of the lens.

In testimony whereof I afiix my signature in presence of two witnesses.

Lao L. PFEI ER,

Witnesses:

WALTER E. L. Boon, A. L. PHELPS.

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