US1346172A - Illumination - Google Patents

Description

L. W. BUGBEE AND E. D. TILLYER.

ILLUMINATION.

APPLICATION FILED JAN. 2. 19H.

Pmmm July 13, 1.92%

A TTORII E KS eieivceo.

L'U'CMN W, BUGBEE AIM) EDGAR. ID. TILLYER, @F SOUTHBMDGE, MASSACHUSETTS,

ASSIKG NQRS T0 AMERICAN @JPTIGAJL COMFANY,

01E SUUTHERIIDGE, MA$SACHU- EI'ETTS, 9 VOLUNTARY ASSOCIATION @TE MASSAGHUSETTS.

ILLUMINATIUN.

Specification of Letters Patent. Pmf g fmfl 5 11 13 192% Application filed January 1917. semi 1m items.

To all whom may concem:

which the t'ciievviiig is a, specificetieiiq Um invention ieizttes to illumination i c has pertlciiime tetei'ence to type e2; seuirees 0i iiiumiimticii disclosed mid in cut" 133,635,

ci the ieeding cbiects cf the p I'Q/SQI" invention is the piccvisieii m an imprev source of iiitimiiieticii sucii as it i at the genemi chamctei" described PiiCit'iJiOii iceitei ied te, but which eiiedi @ii use in edditicii ueueiiy empieyed ct edditiciiel 0]? ece eif Tediaipii, iiicthei ebiect is previssi "i an. impmved .b icti tifi reflected rays 7 pmduee umiiicsity ewer he the same may be eiite ce f 0 me bit),

tiliiififir QiOieCiW ulfl'. 5t MESS Cit).

J3 SO diTCQ ULL copending eppiication Serial L tile present HIVQIIE e e general-tea Y e a when i'ieec. "'w

and advantages cf cm i speciiic disclosures illustrated and described wlthiii the scope of the appended claims Without departing from or exceeding the spirit of cut: invention,

T 1F1gu 'e i i epresents a vertlcai sectlomii view iiiustmting one embodiment of our impreved light ig. represents a simiizii" view of en- (Dilileff 'cciistiuctioii therecfi I iepi'esents e hei'izcntai sectioned in the drawings, the 11m designates i r wi- 1 J. csed Withe pi ic is the ct ctiicai me ccneemec,

1: c L W1 the eeme time in t e suppcrt tor the memen o the radiant scdm 6 tc eeted upcii by the heat rays. It will be understood that a number of substances may be employed for this purpose, such as a cerium oxid or thorium oxid, and that this substance may be a discontinuous radiator which does not have to be a conductor, in that no electrical current is passed through the substance 6", the heating eflect on this substance being entirely from the direct inward radiation from the filament or filaments 4 and the refiected heat rediation stopped 0d and reflected back to the center by the film 3.

' These backwardly reflected radiations will thus increase thetemperature of the material 6 until it becomes luminous and gives off heat and light radiations of its own, in this event the heat radiations being again reflected back onto the substance to increase its heating while the light radiations pass through the reflecting film 3 and are useful as visible light.

lB rom the foregoing description taken in connection with the accompanying drawings, the construction and operation of our improved luminous source should be readily apparent, and it will be seen that by the use of our improvement we are able with a relatively small amount of initial energy to produce an extremely desirable and satisfactory light, in that the heat radiations ordinarily forming a large part of the energy consumed in producing illumination in place of being radiated and lost are all reflected back and made use of, while in addition by the provision of the material 6 on which these radiations are focused a much brighter and more satisfactory source of illumination is obtained than is possible even in our previous improvement in which these radiations are focused back on and serve to additionally increase the luminosity of the film itself.

lit will also be understood that by the use of our improvement we are able to greatly prolong the life of the bulb in that the heat radiations are not primarily in this instance focused on the filament tending to impair the life of the conductor, but are focused on the inert non-conducting material and consequently in nowise interfere with the conductor.

It will further be understood that while we have especially illustrated and described our invention as applicable in connection wit-h a conducting radiant and a supplemental non-conducting radiant,that it is equally applicable in those cases where the supplemental radiant is also a" conductor, or is of a material which will be rendered conductive when suitably heated. ln this latter reaarra it will become conductive where additional electrical or other .energization may be employed to produce incandescence or luminosity in the supplemental radiant. In this event if the position of the parts is such as is illustrated in the accompanying drawing; the supplemental radiant will be found to be at the focal center of the reflector, consequently all heat radiations therefrom will be focused back thereonto to constantly increase the heating of the supplemental radiant for a'given amount of energy and thus increase its luminous efliciency.

It will further be understood that while we have shown our improvement as especially applied to an inclosed bulb, that it is capable of use with various sources of illumination, in connection with which a condensing reflector may be employed, and that we, therefore, do not wish to be llmited in any manner to the specific construction here illustrated, which has merely been chosen as satisfactorily disclosing the several generic principles of our invention as combined in the most eflicient manner so far determined by us for their utilization for general illumination purposes, it being understood that for specific conditions different specific forms of illuminating devices are advantageously employed, and that our invention is capable of employment in a multiplicity of detailed specific embdiments. i

Similarly, it will be understood that it'is not necesary for the supplemental retainer to be inclosed by the main radiant or that said parts be concentrically arranged, since of heat radiations, and a main radiant for I supplying said radiations encircling the supplemental radiant whereby outwardly directed heat radiations therefrom will be focused back to the supplemental radiant by the inclosing bulb and inwardly. directed heat radiations will have a direct heating action on the supplemental radiant, substantially as and for thepurpose described.

2. A source of luminosity, comprising a skeleton source of radiant energy, a supple mental radiant disposed within the skeleton source, and a spherical bulb inelosing the mclia11ts,seid loullo being concentric "Wi'lfill lln testimony "whereof We affix @113? Signed the mam and supplemental rmlmnts and lures 1n the presence of lJWO wl'ltnesses.

having its inner face coated. "with a, metallic LUCIAN W. BUGBEE, film which Will fumnsmib Visible reelizmtiens EDGAR D, TllbLYElf-i, ancl retard by reflection and focus beck the Witnesses:

hem radiations onto the main and supple- E. HAWOR5eN mental mdiants. l. U. ZINE.

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