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Publication numberUS1457646 A
Publication typeGrant
Publication dateJun 5, 1923
Filing dateMar 26, 1920
Priority dateMar 26, 1920
Publication numberUS 1457646 A, US 1457646A, US-A-1457646, US1457646 A, US1457646A
InventorsLyman A Wilson
Original AssigneeLyman A Wilson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Water-cooled lamp
US 1457646 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

June 5, 1923.

L. A. WILSON WATER COOLED LAMP Filed March 26 1920 2 Sheets-Sheet 1 awuamtoi lyr/mh/ V%K5W1/ @311 6 6 60014013 fiaagwma June 5, 1923. 1,457,646

L. A. wlLsoN WATER COOLED LAMP Filed March 26 1920 2 Sheets-Sheet 2 Patented June 5, 1923. I




Application filed. march 26, 1920. Serial No. 888,896.

To all whom it may concern: tion and Fig. 4 shows a view similar to Fig.

Be it known that I, LYMAN A. Wrnson, 3 with a still further modification. a citizen of the United States, and resident Referring to Figs. 1 and 2 a main cup of the borough of Manhattan, city of New shaped reflector 20 has formed therewith at 55 York, in the county of New York and State its outer end the flange 21 from which eX- of New York, have invented certain new tends the sleeve 22 with the groove 23. The and useful Improvements in a Waterapex 24 of the reflector is thickened some- Cooled Lamp, of which the following is a what and internally threaded at 25. A

specification. practically spherical shaped cover 26 for 60 The invention relates to a water cooled rethe reflector, at its outer end has formed flector lamp. for converging light rays. therewith the internally threaded sleeve 27,

The object of this invention is the producannular flange 28 and outer sleeve 29. At tion of a lamp wherewith the light rays are the apex of the cover 26 is formed the anpractically directed into a pyramid of connular disc shaped portion 30. The cover 26 65 verging rays as they leave the light opening forms with the reflector a water jacket A of the lamp, to direct a powerful concenfor the reflector. Tubular circulating arms trated zone of light on an object to be 33 and 34 at one end connect with the cover lighted, as for example the film of a picture 26. A water tank indicated in its entirety machine. Means are also provided to exby the letter B, comprises the front wall 40, 7 2o tract the heat rays from the light rays. the rear wall 41, the roof or top wall 42 and To produce the pyramid of converging the bottom wall 43. The tank is provided light rays, a source of light is loc t d bewith the upper partition 44 and the lower tween a main reflector and a supplemental partition 45, by means of which are formed reflector, the latter reflector having an outthe upper chamber 46 and the lower cham- 7 let for the light rays. ber 47. Circulating tubes 50 are secured Light rays are emitted from the source of to the said partitions and connect the chamlight which pass directly through the outhers 46 and 47. A water level sight glass 51 let, oi the supplemental reflector. Other covers an opening 52 in the upper end of light rays impinge against the main reflecthe Wall 40. From the roof 42 extends the 80 tor and then pass through the said outlet. exteriorly threaded inlet sleeve 53, that is Rays which 1 herein designate as vagrant provided with the screwcap 54. The sleeve light rays first impinge against. the supple- 53 constitutes the intake nozzle for the tank m tal refl ct r, from which they are re- From the bottom 43 extend the exteflected to the main reflector and from the riorly threaded outlet sleeve 55 with the at latt r they pass through the opening of the screw cap 56. The sleeve 55- constitutes an supplemental deflector. The combination outlet nozzle for the tank to enable it to he of the light rays produces an eflicient zone drained and cleaned. The circulating arms of converging rays emitted from the openand 34 connect the cover 26 with the rear ing of the lamp. wall 41 of the tank B and constitute circus10 49 The organization of the invention c lating channels (3 and D between the water prises a water cooled main reflector which jacket A and the chambers 46 and 47. A has detachably connected thereto a supple source of light, in this instance consists of mental reflector. Either or both refl ctors an electric bulb with its socket 61 and may be water cooled. "filament 62. The socket is imbeded in a 95 45 In the drawings 1 represents a. top holder exteriorly thIQfidGd 111 its larger plan vi w of one for of the l ith it portion at 63 and in its smaller portion at appurtenances and a partial secti as on 64. A slot 65 for readjustment is formed the line 1, 1 of Fig. 2; Fig. 2 shows at the outer end of the holder E. Electric tion on the line 2, 2 of Fig. 1; Fi 3 Shows wires 68 and 69 extend through the socket we a side elevation and artial axialdongitudi- 1 r h fi m n 62- A S rew cap G is nal section of a mo 'fication of the inveninteriorly threaded at 7 3 and 74 to engage the threads of the holder E. A water tight asket 76 bears between the outer face of time apex 24 and the inner face of the annular-disc sha portion 30. The base of the screw cap bears a ainst the outer face of the ortlon 30 and ereby enables the gasket 6 to make a water tight joint between the apex 24 of the reflector 20 and the cover 26. A look nut 78. is in threaded en age- 10 ment with the threaded portion 64 0 t e holder E. B inserting a tool in the slot 65 of the hol or E the latter can be turned and moved along the direction of its 1ongitudinal axis, and therebythe filament. 62 canbe accurately located in the focus of the reflector 20.

A supplemental cup shaped reflector is indicated in its entirety by the letter H. It has formed at one end t e disc flange 82 which bears against the outer face of the flange 21 and a spring ring 83 in the groove 23 bears against the ange 82 and locks supplemental reflector H detachably in operative position. The reflector H is oppositely positloned to the reflector 20. A tapered light sleeve 85 extends from the reflector H and at its outlet opening is provided with the glass 86. A groove 87 at the outer end of the sleeve 85 forms a seat for a spring ring 88. The latter maintains the glass 86 in proper position.

Referring to Fig. 3, the tank B is indicated with its tubular circul ting arms 33, 34, and the cover 26. The supplemental reflector H with its light sleeve 85 has formed therewith a cover 92 to form a water jacket J for the said reflector H. Piping 93 with the valve 94 extends from the arm 33 and piping 96 with the valve 97 extends from the cover 92. A union 98 connects the piping 93 and 96. Piping 99 with the valve 100 extends from the arm 34. Piping 102 with the valve 103 extends from the cover 92 and a union 1.04 connects the piping 99 and 102.

In Fig. 4, the tank B has extending therefrom the tubular arms 106 and 108. The

latter tubular arms connect with the sup plemental reflector H and the cover 110 of the latter. A water 'acket K is formed with the supplemental re ector. The reflector H has formed therewith the flange 112. A main reflector 114 has formed therewith the flange 115.- Bolts 116 connect the flanges 112 and 115.

To operate the lamp and referring to Figs.

1 and'2, water is introduced into the tank B through'the inlet nozzle 53, and when de. sired the water can be drained through outlet nozzle 55. The heat radiated with the light from the bulb 60, impinges on the surface ofthe main reflector 20 and is absorbed by the water in water jacket A. This causes a circulation of the water from the bottom of the tank B upwardly in the direction of the arrow in through the water jacket A, up into the channel G and back into the tan B. The temperature of the main reflector 20 is thereby kept normal with a consequent coolin of the light rays, that radiate from the ulb the channel D, 05

60 to said reflector 20. The cooling is very much desired for the light rays transmitted to a motion picture machine to prevent burning the film of the latter when at rest and exposed to li ht rays. The light rays from the bulb 60 w ich are reflected and cooled by the reflector 20. take the usual direction through the lass 86. Light rays which I herein will (isignate as vagrant rays are emitted from the filament 62, in a'zone of light beyond the outer edge of the reflector 20, impinge against the surface of the supplemental reflector H and are reflected back to the main reflector 20, where they are cooled and then ass through the glass 86 to supplement and strengthen the rays that are directly emitted from the bulb 60 and those that are directly reflected from the main reflector 20. The ath of one of these rays is shown in the lines and designated by the letters S to S A second sup lemental ray is indicated b the dotted lines T to T. It will be note that the supplemental reflector H converts the vagrant rays into useful light rays by impinging them on the reflector 20. The vagrant rays that impinge on the reflector 20 are reflected through the glass 86. The combination of rays that flow through the glass 86 constitute a converging zone of cooled li ht rays.

The lamp shown in ig. 3 operates as already described with the additional function of cooling the light rays that impinge on the supplemental reflector H.

The lamp shown in Fig. 4 operates similar to that shown in Fig. 3 with the exception that the light rays are not cooled when impinging on the main reflector 114.

- Having described my invention what I desire to secure by Letters Patent and claim is:

1. In a water cooled lamp the combination of a source of light, a cup shaped reflector forthe source of light, a practically sphericalshaped cover for the reflector and spaced therefrom to form a jacket therewith, a supplemental cup shaped reflector detachably connected to the first reflector and oppositely positioned thereto, a light sleeve extending from the secondreflector,

a glass for the outer end of the light sleeve, a water tank, a channel connecting the upper portion of said jacket andthe upper ortion of the tank and a channel connectlng the lower portion of said jacket and the lower spherically shaped cover for the reflector and spaced therefrom to form a jacket therewith, a water tank comprising an upper chamber and a lower chamber, circulating tubes extending between said chambers and connected thereto, achannel connecting the upper portion of said jacket and the upper chamber of the tank and a channel connecting the lower portion of said jacket and the lower chamber of the ta 10 Si ed atthe borough of Manhattan, city of ew York, in the county of New ork and State of New York, this 8th day of March, A. D. 1920.-


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2435409 *Mar 13, 1945Feb 3, 1948Rushton Kenneth FrederickCooling electric lamps
US2710336 *Sep 6, 1952Jun 7, 1955Burgess Manning CompanyLight troffer with heat transfer means
US2837965 *Sep 29, 1953Jun 10, 1958Rca CorpProjector cooling system
US3811763 *Feb 1, 1972May 21, 1974Le Materiel CompactApparatus for reading microdocuments
US3825741 *Mar 5, 1973Jul 23, 1974Tinsley Labor IncLight source with high efficiency light collection means
US4000407 *Apr 7, 1975Dec 28, 1976Illumination Industries Inc.Combined infrared filter and light focusing apparatus for a mercury vapor lamp
US5199784 *Oct 12, 1990Apr 6, 1993Hempleman Charles RMoisture shedding liquid cooled floodlight fixture
US5504666 *Jul 29, 1994Apr 2, 1996475231 B.C. Ltd.Light bulb cooling jacket and heat dissipation system
US7063423 *Apr 28, 2004Jun 20, 2006Seiko Epson CorporationLight source device and projector
US20050001989 *Apr 28, 2004Jan 6, 2005Seiko Epson CorporationLight source device and projector
USRE43777Jul 12, 2007Oct 30, 2012Seiko Epson CorporationLight source device and projector
U.S. Classification362/294, 353/54
International ClassificationF21V29/00
Cooperative ClassificationF21V29/00
European ClassificationF21V29/00