US 1626983 A
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Description (OCR text may contain errors)
' p 1,626,983 May J. H. SULLIVAN INCANDE SCENT ELECTRIQ LAMP CONNECTION Filed April 21. 1926 Inventor Patented May 3, 1927.
UNITED STATES PATENT OFFICE.
OF PORTAGE, VVISGOITSIN".
r'n'oAnnnscnn'r ELECTRIC-LAMP connncrron.
Application iiimi April 21, 1926. Serial No. 103,593.
My present. invention has to do with the mounting or connection tric lamps and more of incandescent elecparticularly to the mounting or connection of such lamps in reflectors used in autoin obile headlights, and
it contemplates the provisionof a connection which 18 simple, compact and reliable and durable in service the other practical advantages hereinafter ascribed to it. To the attainment invention consists in hereinafter described and is possessed of of the foregoing, the the improvement as and definitely claimed.
In the accompanying drawings, forming part of this specification Figure 1 is a view, partly in section and partly in elevation,
illustrative of the best 'practical embodiment-of my invention that I have as yet devised.
Figure 2 is a detail elevation taken from the viewpoint indicated by the line 2-2 of Figure 1.
Figure 3 is a fra mentary cross-section taken in the plane in mated by the line 3-3 of Figure 1;
Similar numerals of corresponding parts in the drawings. I showin Figures 1 characterized by .a central reference designate all of the views of and aperture 2 and having at its inner side an annulus 3 about said aperture and also having at its outer side a boss 4 which surrounds the aperture,
the annulus being equip cally opposite slots 5, also show in Figure 1 trio lamp 6' which may of cohventional type, the usual filament 7.
ed with diametr Figures 1 and 3. I an incandescent elecbe and preferably is and s provided with The lamp bulb 6 is joined in any appropriate manner to a stem 8 which is dielectric in character and which,
for the sake of strength and durability is formed of fiber or equivalent material; the
filament 7 having its end in and carried through t metrically ortions embedded which extend to the rear end of the stem, Figure 1. The said grooves 9 .arefor the reception of electric. wires 10 designed to be arranged in circuit with a suitable source of electric energ and it will be noted from Figure 1 that t e wire position by screws 11 make electric connection between the fila ment 7 and the wires noted that the rear'por s 10 are clamped in which contact and 10. It will also be tion of the stem 8 is ception of a nut 12 3 a reflector 1;:
estemSto dia-- opposite longitudinal grooves reduced and exteriorly threaded for the rewhich is provided with an annular extension 13 in which are spaced notches 14, said'notches 1a being to seat a cotter pin 15 which extends through the stem 8 and serves to lock the ,nut, 12 to the said stein, after the manner best shown in Figure 2.
It will be appreciated from the foregoing that my improvement is compact, simple and inexpensive, and that all of the parts that enter into the connection are. rigidly fastened to the reflector. Moreover it will be noted that my improvement is susceptible of being easily fabricated or assembled,fand that it is devoid of any connections such as are liable to become loose.
It will be appreciated from that the slots formed in the annulus 3 are sufliciently deep to permit of the lamp being placed in or adjusted to pro er focus.
' I have entered into a detailed description of the present and preferred embodiment of my invention in order to impart an exact understanding of the said embodiment in all of its details. I do not desire, however, to be understood as limiting myself to the precise structure and arrangement disclosed, my invention being defined by my appende claims within the scope of which modifications may be made without departure from my invention. I
Having described my invention, what I claim and desire to secure by Letters-Patent, 1s:- 0
1. In combinatiom'a reflector having an aperture and an annulus about the aperture and in the reflector and also having a boss about the aperture at the outer side of the reflector, the said annulus being characterized by diametrically opposite slots, a dielectric stem arranged in said aperture of the reflector and having pins disposed in said slots and also' having opposite longitudinal grooves for receiving electric conductors and a threaded rear portion, a lamp ulb joined to said stem, a filament-in the bul and having portions extending through the stem, screws for connecting said conductors to the stem and efiecting electric connection between the conductors and the filament, a nut mounted on the stem and disposed in rear of the boss on the reflector and having a notched extension, and a cotter in extending through the stem and seate in notches of the nut extension.
the foregoing 2. In combination, a reflector having an aperture and an annulus about the aperture and in the reflector and also having a boss about the aperture at the-outer side of the reflector, the said annulus being characterized by diametrically opposite slots, a dielectric 'stem arranged in said aperture of the reflector and having pins disposed in said slots and also having opposite longitudinal grooves for receiving electric conductors and a threaded rear portion, a lamp bulb joined to saidstem, a filament in the bulb and having portions extending throu h the stem, means for connecting sald con motors to the stem and efiecting electric connection between the conductors and the filaments, and a nut mounted on the stern and disposed in rear of the boss on the reflector.
3, In combination, a reflector having an aperture and an annulus about the aperture and in the reflector and also having a boss about the aperture at the outer side of the reflector, a dielectric stem arranged in said aperture of the reflector, means between the annulus and the dielectric stem to prevent the rotation of the dielectric stem in the an nulus, said dielectric stem having opposed longitudinal grooves for receiving electric conductors and a threaded rear portion, a lamp bulb joined to said stem, a filament in the bulb having portions extending through the stem, means for connectin said conduct-ors to the stem and efiectmg electric connection between the conductors and the filaments,and a' nut mounted on the stem and disposed in rear of the boss on the refiector.
In testimony whereof I aliix my signature.
JQSEIFH lI-IARQLD SULLIVAN,