US971323A - Lamp. - Google Patents

Description

I. M. STEVENS.

LAMP.

APPLICATION FILED 001. 21. 1909.

Patented Sept 27, 1910.

WITNESSES //V V E /V TOR FREDERICK M. STEVE/V5 By M ATTORNEYS NORRIs PETERS, INC" LITNQ. WASHINGTON. D.

ilhl'lTEU do? ei'l lES PATENT UlFl iQE.

FREDERICK IVL STEVENS, OF NEW YORK, N. Y., ASSZIGNOR TO MANHATTAN SCREW & STAMPING WORKS, 013 NEW YORK, 1 1'. Y., A. CGFEORATION OF NEW YGRK.

LAMP.

arises.

Specification or Letters katent.

Patented Sept, 2'3, 1%10.

Application filed October 21, 1509. Serial Kc. 523,776.

To all whom it may concern: Be it known that 1, Frnnmuoi; M. STEVENS, citizen oi the United States, and a resident of the borough of Manhattan, city and county of New York, State or" New York, have invented certain new and useful 1mprovelnents in Lamps, of which the following is a specification.

My invention relates particularly to that class of portable or semi portable lamps which are used for illumination and warning in connection with automobiles, vehicles,

parts of the la mp structure are so attached I as to leave the external surlace of said cas ing substantially free from rivets, screws, projections or surface breaks of any kind.

Another object of my invention is to pro-- vide a lamp the parts of which have been assembled substantially without the use of solder,

In the drawing, which is hereby made a part of this specification, Figure 1 shows in side elevation a preferred form of my invention as commonly used for automobiles; Fig. 2 is a central longitudinal section, partly in ele ation, corresponding to Fi 1;

Fig. 8 is a section partly in elevation, along the line 3-3 of Fig. 2; and Fig. 4: is a central section through the reflector of the lamp and its mounting.

The lamp consists essentially of a casing comprising a central section 1 to which is attached a hinged front land a permanently attached rear section 3, said rear section being provided. with a reflector 4 and the front with a glass 5. Mounted within the casing at a suitable distance from the reflector is aburner 6 which any be of any usual constructlon.

What may perhaps be called the central idea of my invention the use of a casing the walls of which, for substantially the entire casing, are double comprising an outer layer of brass or similar ornamental sheet metal and an inner layer of sheet iron or other equivalent strong and inexpensive material. Most of the lam arts aside from the casing are fixed to this inner shell which is then covered with the outer shell so that the points of attachment of said parts are not seen when the lamp is assembled.-

Reierring to the central section 1, an outer tube 2' ofthin brass fits snugly over an inner tube 8 of. somewhat thicker sheet iron; the brass tube is somewhat longer thanthe iron tube and in assembling is so placed as to project beyond the iron tube at each end, said projecting portion being then turned over 1nwardly upon the ends of the iron tube so as to clamp the two tubes firmly together. A rectangular opening is then cut through both tubes at the top and through said opening is passed the ventilating cap 9.. This cap consists of an outer layer 10 or sheet brass and an inner strip 11 of sheet iron, The brass is shaped like a closed box opened below and having eaten-- sions 12 on each of two opposite sides adjacent to the opening said extensions being carried inwardly, downwardly and then outwardly so as to ti htly embrace the edges of the opening of the casing, thus fixing the ventilating cap in the opening or" the casin The inner sheet iron iece 11 being intended mainly to receive an absorb the intense and direct heat of the burner is only provided of sufiicient area. to cover the inner top surface of cap 9; tongues 12' integrally formed upon strip 11 at t e same two opposite sides of the cap as are the extensions 12 bentv downwardly and s rung outwardly as to said strip serve to reep said strip in posi tion a ainst the superposed brass strip.

In the bottom of the central section 1 is formed a slot 12 with its length parallel to the lamp axis and wide enough to take the burner supply tube 12 Plates 12*, 12 and a nut 12 threaded-upon tube 12 allow the flame height to be raised or lowered and the burner as a whole to be clamped at any desired point in the length of the slot thus enabling accurate adjustment of the flame to be made for reflectors of differing curvature may be placed bet 'een the reflector and the back 24:.

and to compensate for other variations in individual lamps.

Projecting from each le of the central section 1 of the ca: u and preferabl in th central plane thereof is a rectangular sectioned lug 1?,- vertically boron as at 1 3' I having a clamp screw it so as to tit upon and be. locked to such suitable fork or support as may be provided. Each lug is provided with an inner flanged portion adapted to engage the casing, the lug proper being of smaller section and thrust from the inside through a similar opening in the casing just large enough to receive it. Riv ets 16 previously fixed in the inner shell and adapted to engage holes placed in the flange are then upset so to hold the lugs securely. Placed about the interior of section 1 are angle pieces 1}"; these are riveted at 18 to the inner shell 8 before the outer brass portion '7 is put on.

The rear section 3, like the central section 1 is composed of an outer spun brass cap 19 fitted closely to an inner cap 20 of sheet iron and exactly similar shape. The edges of cap 19 are spun ii'nvardly so as to cover the edge of 20 and hold the two pieces together. Before thus covering the inner cap 20, four stiff brackets 21 are riveted to said inner cap. These brackets are each bent so as to have an inwardly projecting V at and an inwardly projected terminal portion 23 pari .lel to similar inwardly bent portions 22" of angle pieces 17.

The reflector at, which is of glass of suitable curvature, is held in a sheet iron mounting comprising a back 2i shaped to corrc spend with the-curvature of st and against which the reflector lies, and a retaining piece 25 into the tubular portion of which 26 the reflector is inserted from the rear; an in Wardly turned edge, 27, engages the periphery of the reflector and with the back Q-l holds it in place. To prevent back 2% from slipping out it is formed with a tubular rini 28 adapted to it snugly within 26 and inwardly over this rim, the edge of which is preferably beaded, are folded to'a'ues 29 (shown dotted Fig. l) formed by radially slitting the flared rear portion 2'2) of the retaining piece.

In order that the retiecto may be held firmly and yetvieldingly in its mount and thus expand and contract without danger of breaking as the. burner is lighted and extinguished a pad of asbestos 30 or other similar material of heat resisting qualities Vith the same objectin view, also, I prefer to cut away centrally from the back 2% a substantial portion, say an area equal to about one half that of the en-' tire back.

The reflector and its mount as just de- 1 scribed are held against the rear section 3 1 by the V's 22 of the brackets 21 the brackets being given an initial inward spring and being so spaced about the back as to fit with in the peripheral slots 31 left by the inward folding of the tongues 29. Since the. flared segments of 29* by reason of the slots 2:31 are springy it is possible by suitably determining the distance of the V's from rear section 3 to hold the reflector and its mount firmly in place without the necessity of forming the brackets 21 and the reflector mount With great exactness.

After the reflector has been fixed to rear section as above described the rear section as a whole is united to the central section 1 by slipping it over the edge thereof until the two beads are abutting and then drawing up screws 33 which engage the parallel segments of angle pieces 17 and brackets 21.

Referring to the hinged front 2, this comprises a tubular section 3%, beaded on the edge adjacent to section 1 and having its other edge spun outwardly, then'forwardly and then inwardly so as to form a rim 3i of hook shaped section; the minimum diameter-- of this inwardly turned portion is at its edge and is substantially less than the diameter of the cylindrical portion. Slipped within the front is a split ring 35,'which may be of sheet iron, this ring having formed upon it an annular convexity 36 engaging a similar convexity 3? formed in 2. The glass fits within the ring and is pushed up against the edge; it is held in this position by a split spring ring 39 which fits in the groove 37.

By having the diameter of ring 34: at its free edge substantially less than the diameter of the tubular portion 3%, the inwardly projecting portion of this rim serves as a diaphragm to cut off a large percentage of the irregularly reflected rays proceeding from the inner periphery of the central section 1.

it will be seen that my improved lamp is composed of but few and simple parts which -niay be easily and quickly assembled and which when thus assembled. are held positively and permanently. The construction results in a minimum number of breaks in the outer surface of the casing. involves substantially no rivets fiXedtherein, uses no solder and produces a casing rich and elegant in appearance which may be quickly and inexpensively given a high finish.

Various modifications of detail may be made Without departing from the spirit of my invention as set forth in the claims.

I clain1-- 1. In a lamp of the class described the combination with a casing comprising a central section provided with an outer and an inner wall and a rear section provided with an outer and an inner wall. of means independent of said outer walls adapted to hold said .2. In a lamp of the class described, the

combination with a casing comprising a con tral section provided with an outer and an inner wall and a rear section provided with an outer and an inner wall, of means attached to said inner walls adapted to hold said sections together, as and for the purpose described.

3. In a lamp of the class described, the combination with a casing comprising a central section provided with an outer and an inner wall and a rear section provided with an outer and an inner wall, of angle pieces fixed to the inner wall of said central section, brackets fixed to the inner wall of said rear section said brackets being adapted to hold a reflector yieldingly, and means uniting said angle pieces and said brackets to hold said central and rear sections together, as and for the purpose described.

4. In a lamp of the class described having a casing provided with a rear section, the combination with said rear section of a reflector, a mounting for said reflector comprising a back provided with a tubular rim and a retaining piece also provided with a tubular rim said back and retaining piece being adapted to hold the reflector between I them and to have their tubular rims slip one within the other, means for holding said back and retaining piece together, and means for attaching said mounting to said rear section, as and for the purpose described.

5. In a lamp of the class described the combination of a central section and a rear section each provided with an inner and an outer wall, a reflector, brackets attached to the rear section independent of its outer wall to holdthe reflector in position, and means attached to the central section independent of its outer wall adapted to engage the brackets and hold said sections together, as and for the purpose described.

6. In a lamp of the class described, the combination of a central section and a rear section, each provided with an inner and an outer wall, a reflector, and means independent of said outer walls serving both to unite said sections together and to secure said re flector, as and for the purpose described.

7. In a lamp of the class described, the combination of a central section and a rear sect-ion, each provided with an inner and an outer wall, a reflector and means independent of said outer walls serving both to unite said sections together and to resiliently secure said reflector, as and for the purpose described.

8. In alamp of the class described, the combination of a central section and a rear section each provided with an inner wall, a reflector, a mount for said reflector provided with flared segments, and means serving both to unite said sections and to secure said mount with its flared segments against said rear section, as and for the purpose described.

9. In a lamp of the class described, the combination of a central section, a rear section, a reflector mountprovided with flared segments adapted to resiliently space said mount from said rear section, means adapted to resiliently engage said mount. and hold it against said rear section, and means adapted to engage said first named means so as to hold said sections together, as and for the purpose described. r

In testimony whereof I have hereunto set my hand in the. presence of two subscribing witnesses.

FREDERICK M. STEVENS. Witnesses Emma G. VILLYOUNG, JOHN A. Kminnnnnon,

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