US1453794A - Electric-light fixture - Google Patents

Description

J. W. HANCOCK ELECTRIC LIGHT FIXTURE Filed April 18 1922 2 Sheets-Sheet l May 1, 1923.

J. W; HANCOCK ELECTRIC LIGHT FIXTURE Filed April 18 1922 2 Sheets-Sheet 2 jnvenor Jahn WHancQc, y ma@ @ma/,M VM

rPatented May l, i923.

JOHN WALLACE HANCOCK, OF DENVER, COLORADO.

ELECTRIC-LIGHT FIXTURE.

To all whom it may concern Be it known that I, JOHN W. HANCOCK,

a citizen of the United States, and resident of Denver, in the county of Denver, in the State of Colorado, have invented certain new and useful Improvements in Electric- Light Fixtures, of which the following is a specification.

My said invention relates to improvements in electric light fixtures of the type in which a globe enclosing the light bulb is combined or associated with a reflector.

One object of the invention is to provide a construction by which an opaque nonbreakable reflector may be used and in which invention includes the novel features of con struction and arrangement and combination of parts hereinafter ldescribed,the nature and scope of my invention being defined by the claim appended hereto.

An embodiment of my invention is illustrated in the accompanying drawings in which Fig. 1 is a transverse ve'rtical section through my improved fixture.

Fig. 2 is a planview partly broken away.

Fig. 3 is a side elevation.

Fig. 4 is a bottom plan view partly broken away, and

Fig. 5 is an enlarged sectional detail.

Referring by reference characters 'to these drawings the numeral l designates a. metal holder which is provided with ascrew threaded nipple 1El designed `to detachably connect with and support the socket member 2 of the ordinary electric light bulb desi ignated 3.

The holder 1 is of substantially dome shape and is adapted to support the globe and reflector in the manner hereinafter described and the nipple l is in the form of al relatively short tube having a threaded exterior onto the upper end of which the Application mee .epm 1a, 1.922. sei-iai Ne. 554,631.

collar 4vis screwed, which collar carries the suspending ring 4a. Nipple 1' is screwed into a correspondingly threaded and preferably reinforced opening( in the top .of the older 1 and by screwing the nipple up or own the lamp bulb may be adjusted and thereafter locked in position by tightening the collar 4.

The holden or 4hood 1 is preferably provided at its upper end around the nipple with `a plurality ofy annularly arranged Ventilating or draft openings lb and a dome shaped slueld overlies these, being clamped in position between the apex or crown of the holder and the clamping collar.

The globe is indicated at 5 and is preferably of the shape and construction shown having a substantially pear shaped lower portion 5, surmounted by a luted and outwardly curved or flared band 5b above which thefglobe curves or turns inwardly as at 5c, termmating at the top in an outwardly turned edge forming an annular channel 5d l which receives .the ends of the set screws 6 by which the globe is detachably secured to the holder in the manner well understood by those skilled in the art.

Preferably I place in, the channel 5d a metal band or ring 7 against which the ends of the screws impinge and thereby prevent any danger of breakage of the globe.

The globe 5 is of course made of glass, preferably frosted or ground. Cooperating with this is a reflector 8 which is preferably of the shape shown of annular or ring form and comprising a. downwardly flaring main portion 8a and an annular peripheral flanged portion 8b, preferably extending above and below the top and bottoni of the main porltion.

This reflector I make of a practically nonlarge diameter without danger of breakage g in shipment which is a serious diawbaclr to glass reflectors or d ifusers, while due to its lightness it does not add material weight to the fixture. Being opaque,` if the rel-lector joined the'holder, a shadow would be cast on the ceiling which would be objectionable.

It is to avoid this that I make the globe of the shape shown andsupport the reflector so that a material portion of the globe projects above the reflector so that the portion 5 between the edge of the holder and the inner edge of the reflector is exposed and diffuses the light upwardly and prevents the formation of any shadows.

The reflector may conveniently be supported by chains 9 secured at one end to the outer edge of the reflector and at the other to the holder, preferably by detachably connecting them to the clips 9a.

The inner edge of the reflector is spaced from the outer periphery of the globe to provide an annular passage l0 which permits a draft of air under the heating influence of the lamp.

This causes any dust which may be in the air to pass upward through this channel and prevents it being deposited on the globeand surface of the reflector'and hence prevents obstruction of the passage or reflection of the light.

Preferably the bottom of the globe is provided With an air inlet opening 5e so that air can enter therethrough `and pass upward around the light bulb and out at the openings in the top of the holder.

Having thus described my invention, what I claim is: l

A lighting fixture including a globe holder suspended from a ceiling, a translucent globe secured thereto, lighting means within the globe, an opaque reflector ot' relatively small height surrounding said globe and spaced therefrom, said globe projecting above and below said reflector whereby diffused light is thrown on the ceiling by that portion of the globe above the reflector, and diffused light from that portion of the globe below the reflector is reflected downwardly toward the floor, the relatively small height of the reflector allowing light rays to meet on each side thereof, whereby shadows from the re- Hector are dispellcd, said reflector being supported from the globe holder.

. ln testimony whereof, I affix my signature.

JOHN umn-ion HANcooK.

Images