US1641629A - Therapeutic lamp - Google Patents

Description

Sept. 6 1927.

N. E. GooDRlcH THERAPEUTIG LAMP 2 sheets-sheet 1 File'ld July 29. 1925 Jag.

Sept- 6 1927- N. E. GooDRlcH THERAPEUTI C LAMP 2 sheets-sheet 2 Filed July 29. 1925 Patented Sept. 6,1927.

` UNITED STATES PATENT OFFICE.

NOBBIS E. GfOODRICH, OF BATTLE CREEK, MICHIGAN, ASSIGNOR T0 SANITARIUM HOSPITAL EQUIPMENT COMPANY, 0F BATTLEPCREEK, MICHIGAN, A CCRPOBATION 0F MICHIGAN.

THERAPEUTIC LAMP.

\\, This invention relates to improvements in therapeutic apparatus, and more particularly pertains to electric lamps extensively employed for therapeutic purposes in physicians ofiices, hospitals, sanitariums, etc.

Electricv lamps for therapeutic purposes -are vcoming into extensive use for the treatment of various infections, diseases and ailments, and I have found that with the use of a lamp of high wattage the curative effect of such devices may be greatly extended in range. There are, however, a number of attendant'disadvantages to be met in attempting to adapt the usual therapeutic lamp to a high-powered electric lamp. The greatest of these perhaps, is the confinement of the large amount of heat generated by the lamp within the reflector with the result that the reflector becomes highly heated causing the cement securing the lamp base to the lamp neck to soften and loosen, increasing the liability to fire and physical injury.

Another disadvantage of an apparatus of this character when used with a high wattage electric lamp, is the diiiiculty of attain- ,ing the requisite proportion of heat and light rays. It is diicult, if not impossible, to obtain the correct proportions of heat and light rays by the ordinary means of adjusting the apparatus toward or from the part to be treated. I have discovered that the several foregoing objections may be entirely overcome and to that end have devised the novel invention hereinafter described.

It is one object of my invention to provide an easily adjustable reflector and one which may be readily adapted for use in connection with the therapeutic lamp stand described and claimed in my copending application, Sei'. N o. 43,109, iiled July 13, 1925.

Another object of the invention is to provide a reiector mechanism adaptable for use in connection with a high powered electric lamp such as one of 1500 watts without the retention of the heat as in former reflecting mechanisms for this purpose and a reiiector in which positive ventilation is provided for the inducement of thorough and rapid circulation of air.

A. further object includes the provision of means whereby the current supplied to the lamp, and thus the effective light and heat ray projection, may be regulated and controlled.

Application filed July 29, 1925. Serial N0. 46,750.

Still further objects and advantages of my invention should be readily appreciated alter reading the following description and claims in connection with the accompanying drawing in which:

Fig. l is a side elevation partly in section of therapeutic apparatus embodying the above noted features of my invention.

ldig. 2 is a top plan vieW of the reiector and Ventilating mechanism shown in Fig. 1.

Fig. 3 is a section taken on the line 3 3 of Fig. 2 showing an electric lamp situated in the reflector, and,

Fig. 4 is a diagrammatic view showing a circuit embodying part of the invention.

In the drawing, 2 designates a base constituting a support for the lower end of a lamp standard 3 upon which a ventilated rheostat element 4. and a bracket clamp generally designated 5 connected with a balanced raising and lowering mechanism generally designated 6, may be mounted as more particularly described in the copending application to which reference has been made above. The bracket clamp 5 supports a. lamp supporting trunnion yoke 7 which in turn engages trunnions 8 and 9, which are secured to the reiectori 11 by rivets or in any other suitable manner, whereby the reiiector may be swung in a vertical plane through an angle or approximately 90. 'lhe arms of the yoke 7 are adapted to be positioned over trunnion spindles 12 and 13 as will be apparent from Fig. 3 and are preferably slightly recessed as at 14 to provide annular chambers about the spindles 12 and 13 for the reception of light springs 15 cooperative with nuts 16 and washers 17 to frictionally retard movement of the reflector 11 in a vertical plane whereby the reflector may be positioned'as desired.

High-powered electric lamps 18 are usually provided with long necks or stems 19 for the purpose of preventing `heat generated by the iilament thereof, from softening the ceinent by which the usual lamp base 21 is secured. However, when such lamps are placed in a closed reiiector, the heat generated by the filament is conducted and conveyed toward the base with the result that the base cement often softens and allows the lamps to pull loose. It also often happens that an attendant or even the patient is burned severelyl upon contact with the highly heated portions of the reflector or they might be seriously shocked should the electric wires short-circuit with the lamp. In orde-r to overcome these disadvantages, I prefer to provide the reflector with a series of ventilating openings 22 located through the reflector walls to the rear of the focus of the reflector and with one or more heat and light ray reflectors or baffles 23 secured about the perimeter of a lamp receiving openingcut in the rear of the reflector. In the present instance, the bafie 23 is of conical shape and is provided with outwardly flared portions 24 whereby it may be secured to the perimeter of the opening to the rear of the reflector and is truncated to provide an opening suiiiciently large to receive andlie in contiguous Vrelation to the electric lamp 18. The foradapted to aid in positioning .the lamp 184v and its stem 19 within the reflector since they y lie practically in contact relation to the bowl and neck thereof, and these baffles with their reflecting forward-bases, successfully reflect or deflect any light rays and heat currents directed upwardly toward. the base 21 of the lamp, out through the Ventilating openings 22 and 26, or direct the light rays outwardly to their proper and desired direction.

In operation, heat generated within the reflector proper, will rise and strike the baffles -23 and pass outwardly through the several openings 22 into the outer atmosphere and thus establish a positive circulation around the lamp .and through the reflecs tor. In a similar manner also, light rays and heated gas generated between the'two baffles 23 and 28 will be directed outwardly away fronthe base of the la-mp to the inside surface of the cap 25 where theheated gases will be dissipated through the several ventilatin openings 26. The cap 25, of course, may e made of any suitable heat insulating material or it may be made of metal since the radiation therefrom is sufficient to dissipate any heat absorbed thereby.l

The rheostat 4 may consist of a number of independent resistance elements 29 and 3/14 suitably insulated and connectedbetween a line 32 to a source of power and a line 33 connecting with a lamp socket in the usual manner. Any desirable switch mechanism 34 may be utilized for connecting the resistance elements in series with the lamp line singly or in multiple, or if desired, the resistance may be entirely cutout as will be readily ap preciated from Fig. 4. With this arrange` ment together with the adjustable stand mechanism, I am enabled to more perfectly adjust the lamp to the proper distance from the patient to obtain the proper relative amounts and proportions of heat .and light ray projection. In other words, adjustment of the lamp to the various needs or demands spirit of the invention or sacrificing any of 'the advantages thereof. Hence, I do not limit the invention to the particular embodiment shown, but reserve all such variations, modifications and mechanical equivalents as fall within the spirit and purview of the .appended claims.

I claim:

1. In a therapeutic lamp, a parabolic re-` flector, a Ventilating cap having ventilation openings and a lamp socket therein behindA the focus of the reflector, a plurality of ventilating openings in the reflector behind the focus thereof, and av plurality of heat and light ray deflectors adapted to deflect a por tion of the heat and light rays falling behind the focus of the reflector, through said ventilation openings.

2. In a therapeutic lamp, a parabolic reflector having oppositely disposed trunnions for swinging movement thereon, a lamp socket connected to said reflector to dispose a lamp within said reflector, said d eector having ventilation openings therein, and means for Yreflecting light and deflecting heat rays away from said socket and towards said openings.

3. In a therapeutic lamp, a parabolic reflector, a ventilator cap member having ventilating opening therein and forming a lamp, socket engaging means, av lamp socket in said means, and meanswith said cap for deflecting heat away from said socket toward said openings.

4. In a therapeutic lamp, a reflector hav,

ing ventilation openings therein, means for ositioning and securing a source of light in ront of the reflector, and means positioned between said reflector and said. first named means for deflecting light and heat rays away from the first said means toward said openings.

5. In a therapeutic lamp, a parabolic reiiector, a Ventilating cap having Ventilating openings therein, secured to said reflector, and having a lamp socket therein on the longitudinal axis of said reflector, and a CII light and heat ray deflector having an open- 4 ing therein concentric with said'socket secured to said reflector and projecting forwardly therein for intimate association with a lamp in said socket.

6. In a therapeutic lamp, a parabolic reflector having a portion to the rear of its focus turned inwardly and formed with an opening therein whereby the neck of an electric lamp may be passed therethrough to dispose the bowl of the lamp within the reflector, said reflector having ventilation openings adjacent said inturned portion whereby heat generated by a lamp may be dissipated without the reflector, said portion serving as a deflector of heat and light rays directed toward the base of a lamp.

7. In a therapeutic lamp, a parabolic refleotor` having a portion to the rear of its focus indented and provided with an electric lamp neck receiving opening, and an insulating covering for the rearward surface of said indented portion.

8. In a therapeutic lamp, a parabolic reflector having an inwardly projecting truncated-cone baille to the rear of the focus of the reflector, and a reflecting surface on the face of the baille interior of the reflector.

9. In a therapeutic lamp, a parabolic reflector having an inwardly directed conical baille, projecting through a wall thereof,

Said baille being truncated t0 provide an i electric lamp receiving opening therethrough, and a reflecting surface on the side of said baille facing the interior surface of said reflector.

10. In a therapeutic lamp, a parabolic reflector, an inwardly directed hollow conical baille connected at its base to said reflector to the rear of the focus thereof, a reflecting surface on one side of said baille, andan insulation covering on the other side of said baille.

11k. In a therapeutic lamp, a parabolic reflector having a series of inwardly directed conical baflles, said baflles being truncated to provide aligned openings for the reception of the base and neck of an electric lamp, and a reflecting surface on said baflles adapted to reflect light rays directed toward the base of the lamp outwardly and away therefrom.

In witness of the foregoing I afllx my signature.

NORRIS E. GOODRICH.

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