US1749993A - Alternating-current vapor electrical device - Google Patents

Description

March 11, 1930. w, ANDEEQSQN, JR 1,749,993

ALTERNATING CURRENT VAPOR ELECTRICAL DEVICE Filed Fb. 23, 1926 2 Sheets-Sheet 1 w, 1:. INVENTOR (3):

ATTORNEY March 11, 1930.

Filed Feb. 25, 1926 2 Sheets-Sheet 2 INVENTOR ATTORNEY plished by the novel construction and com- Patented Mar. 11, 1930 r UNITED STATES PATENT OFFICE WILLIAM T. ANDERSON, an, or NEWARK, NEW JERSEY, ASSIGNOR To HANOVIA CHEMICAL AND MANUFACTURING COMP IPORATION OF NEW JERSEY .ALTERNATING-CURRENT vAroR ELECTRICAL. DEVICE Application filed February 23,1926; see-am. 39,924.

tion'in therapy, biology, chemistry andphys- Lamps of this nature have, so far as known, hitherto employed laminated iron core reactances, with the result of producing, occasionally, buzzing or hissing noises when in operation, highly objectionable in any event, and particularly so, when used therapeutically, to the nerves of apatient undergoing treatment and frequently in an excitable condition due to the strain. imposed.

It is therefore an object of the instant in-- vention to provide a solid reactance core come erally indicated by the numeral 20, extendingupward fromtheplate 16. I

posed of iron, or composition in which iron predominates, which absolutely precludes noises due to vibration.

It is a further feature to produce a solid core for reactance coils that can be manufactured at a fractional part of the cost of a laminated core and which simplifies the assemblage of the electrical devices, and fur- .usual manner and towhich curr'entis suppliedby a flexiblecable 26, the lamp con- "taininga tri-polar burner, generally desigthermore eliminates the danger of short circuits caused by loosened laminations cutting the wire insulation.

These and other like objects are accombination of parts hereinafter described and shown in the accompanying drawings, forming part hereof, and in which Figure 1 is a side elevational View of a quartz mercury vapor lamp made in accord-j ance with the invention.

Figure 2 is a transverse sectional view of I the lamp base, drawn to an enlarged scale,

the section being taken on line 22 of Fig. 3. Figure 3 is a side elevational view of the electrical elements used in the base, the base Figure 4 is a diagrammatic view of the electrical elements and their connections.

Figure 5 is a perspective View of the reactance core indetail.

Referring more in detail to the drawings, a base, generally designated by the numeral 10, isprovided withradial extensions 11 inv which are fitted castors 12 to facilitate rolling the apparatus from place to place."

Removably secured in a central hub of the base is tubular column 13, surrounded at its lower portion by a cylindrical casing 141 havng perforations 15 in its side wall in order to provide circulation of air to the electrica elements disposed within the casing. The wall of the casing rests at its lower edge on a plate 16 supported by the base 10 and is anchored by lugsl'? to the radial elements of the base.

cover plate 18 extends over the upper edge of the casing and mounted no the plate is a switch 8 to control alternating current conducted by a flexible cable A. C. from any convenient source of electricalenergy by a conductor 19, to an auto-transformer, gen- Adjustably mounted on the column 13 is a sleeve 21 slidable and rotatable manually,

the sleeve having an offset bearing in which is mounted a slidable rack'22 having at one end a pivot 23, adjustably supporting a shade 24 which carries a lamp 25 adjustable in the third conductor 29 leading from the negative poleof the burner to a secondary resistance,

generally indicated at 30,from which a conductor 31 leads to the coils of the auto-transformer20.

One of the coils of the transformer 20 is connected by a conductor 32 to one coil of a primary reactance33 containing an adjustable core 34:, and a contact 35, movable with the core, maybe suspended over another coil 36, connected by a conductor 37 to the switch S to which the line conductors are attached. The auto-transformer20 is secured to the plate 16, as is the coil 36, and the primary reactance 33 is attached to the cover plate 18 ANY, QFNEWARK, NEW JERSEY, A COR- as best seen in Figures 2 and 3, which shows the relation of parts within the casing 14.

The secondary reactance 30 is also fixed on the casing plate 16 and its construction con- 5 stitutes much of the novelty of the invention, comprising, as it does the application and use of a solid core reactance specifically in connection with alternating current vapor electrical devices of the type described. In these devices, under like conditions,

solid core reactances can be constructed that ssess substantially the same electrical beavior as do laminated core reactances.

The solid core reactance consists of insulated wire coils mounted on a core of'solid metal, the principal chemical element of which is pure iron, cast or drawn as preferred.

Small quantities of other elements are permissible but considerable quantities of forei adulterant elements are undesirable.

he core consists of a base 40, see Figure 5, having a central upstanding bar 41 separated by spaces 42 from similar but narrower 5 bars 43. i

- The central bar 41 is Wound with suitable insulated wire to produce a coil 44 extending from the base towards the upper end of the bar and filling the remainder of the c 30 spaces 42 are dielectric plugs 45 to render the top of the reactance substantially smooth and level.

From the foregoing it will be apparent that not only can'a solid core be produced as far more economically than one consisting of laminae, but that other inherent and important advantages are attained.

From the foregoing it will be seen that a simple device for this purpose has been dis- 0 closed in the preferred form of its embodiment, but it is not desired to restrict the details to the exact construction shown, it being obvious that changes, not involving the exercise of invention, may be made without.

45 conflicting with the scope of the appended claim.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is 4 5 In combination with a mercury vapor lamp emitting ultra violet radiations for therapeutic use, an alternating current device for operating said lam a secondary reactance included in said evice, said reactance having a solid iron core consisting of a base provided with three spaced integral upstanding bars, a coil of insulating wire wound about the central bar, and dielectric plugs over said coil within the spaces be- 00 tween the u standing elements,

This specification signed this eighteenth dayof February, 1926.

WILLIAM T. ANDERSON, JR.

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