US1204057A - Lamp construction. - Google Patents

Description

L. L. PFEI'FER.

LAMP CONSTRUCTION. APPLICATION-FILED JULY 20,1916.

1,204,957. Patented Nov. 7, 1916.

3 woe/114301 Leo L. p/eifer 6' 1 lmm 4 %TT% PATENT OFFTQEJQ LEO L. PFEIFER, 0F COLUMBUS, OHIO, ASSIG-NOR TO THE JOHN VJ. BROWN MANUFAC- TURING COMPANY, OF COLUMBUS, OHIO, A CORPORATION OF OHIO.

LAMP CONSTRUCTION.

Specification of Letters Patent.

Patented Nov. "Z, 1916.

Application filed July 20, 1916. Serial No. 110,270.

T 0 all whom it may concern Be it known that I, LEO L. Prnrrnn, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Lamp Construction, of which the following is a specification.

This invention relates to the improvement of lamp construction and has particular relation to the provision of means for uniting certain portions or members of a lamp body.

The objects of my invention are to provide improved means for uniting portions of a lamp body in such manner as to insure a saving in the time and cost of manufacture and to prevent the formation of air passages or openings at the points where said members or parts are riveted one to the other.

A particular object of my invention is to provide the flame chamber lining of a lamp, with an improved construction of integrally formed rivets whereby the base of said flame chamber may be readily and efl'ectively united with'a burner cushioning ring.

The preferred embodiment of my invention is shown in the accompanying sheet of drawings, in which similar characters of reference designate corresponding parts, and in which I Figure l is a view of an automobile oil lamp showing the latter partially in section and partially in elevation, Fig. 2 is a view in perspective of a lamp or flame chamber lining showing the burner spring or cushioning ring united therewith by my improved riveting means, Fig. 3 is a detail sectional view through portions of the base of the lamp lining and the cushioning ring showing one of the attaching rings in position for heading, and, Fig. 4 is a similar view showing the rivet closed or headed.

In order to illustrate my device, I have shown in Fig. l of the drawing, an oil lamp of a type which is employed on automobiles. Of this lamp, 1 represents the body or main casing, 2 the chimney portion,-3 the front lens and 4 the flame chamber lining.

5 represents the burner head which extends upwardly in the usual manner from the oil pot 6 through an opening 7 in the bottom 4 of the flame chamber lining 4. On the flattened underside of the flame chamber lining and about the wick tube or burner head 5 is usually provided a cushioning ring 8, this ring having projecting from its underside and about the central opening 7 a succession of downwardly inclined spring lips 9 against which bears the upper side of the shoulder 55 of the burner head 5, said spring members 9 thus providing a cushion bearing for said burner head shoulder when the latter is pressed upward into its normal position.

Heretofore, it has been customary to form at intervals in the cushion or spring ring 8, rivet holes which are adapted to be made to register with corresponding rivet holes in the base 4 of the lamp or flame chamber lining 4. In order to effect the desired riveted connection between these members, it has been necessary for the manufacturer to insert his hand or fingers within the flame chamber for the purpose of inserting the rivets into the rivet holes heretofore mentioned. On account of the comparatively small openings in said lamp lining, this has been more or less of a difficult and tedious operation. Furthermore, when the outer ends of the rivets are headed, there is always a possibility that the inserted rivets do not completelyfill the rivet holes and that an air space about said rivets is produced, which permits air to enter the flame chamber at such a point as to interfere with maintaining proper combustion at the flame. These difliculties I have overcome in a comparatively simple although effective manner. Either in the process of shaping the lining 4 or after the same has been shaped, I produce in the base 4 of the lining 4 through the medium of a suitable punching operation, downwardly projecting hollow rivets 10, these hollow rivets having their lower ends closed and preferably rounded as shown more clearly in Fig. 3 of the drawing. These integrally formed rivet projections are so arranged as to register with correspondingly formed rivet openings in the cushion ring 8 and said rivet members being projected through said rivet openings, the downwardly extending heads thereof are flattened by the usual riveting process to the form shown more clearly in Fig. 4.

By this construction and operation, it will be understood that the riveting of the ring 8 to the base 4 of the lining 4, is accomplished in an accurate, comparatively rapid and economical manner. By producing the integral rivets of predetermined corresponding sizes adapted to snugly fit the rivet openings in the ring 8 and by forming the rivet projections 10 with closed lower or outer ends which are afterv-rard converted into rivet heads, it is obvious that not only is a rigid connection of the parts eli'ected, but that no opening is left for the passage of air through the rivet holes and into the lamp lining.

.V hat I claim is 1. In a lamp construction, the combination with a lamp-body comprising a main ilame chamber, a lining for said flame chamber having a substantially horizontal base portion provided with a central opening, and an oil pot and burner head extending upwardly therefrom through said lining opening, of a cushioning ring having rivet openings at intervals therein, said ring being interposed-between the flame chamber lining base and a lateral shoulder of said burner head, the base of the flame chamber lining having formed integraltherewith outwardly extending rivet projections adapted to enter the rivet holes of said cushion ring and to have their heads fiattenec against the underside of the latter.

In a lamp construction the combination with a flame chamber lining member having a fiat base portion formed with an opening therethrough, said base portion having formed at intervals therein and integral therewith about said opening, hollow rivet projections, of aburner head cushioning ring formed with rivet holes adapted to register with the rivets of said lining base, and to receive the rivet projections of said base, said rivet projections being closed at their outer ends.

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

LEO L. PFEIFER. Witnesses 2 WALTER E. S. Boon, A. L. PHELPS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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