US1426166A - Electric heater - Google Patents

Description

Patented Aug.

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T. M. FEDEH.

ELECTRIC HEATER. APPLICAHDN min 0:01,!921.

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M w m UNITED STATES PATENT OFFICE.

TOBIAS M. FEDER, OF BROOKLYN, NEW YORK.

ELECTRIC HEATER.

Application filed December T 0 all whom it may concern:

Be it known that I, Tomas M. Fenian, a citizen of the United States. residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Electric Heaters. of which the following is a specification.

This invention relates to electrically gen era-ted heaters-{and has particular reference to that type which can be screwed into a, common type of socket used for lighting .fixtures in the average building, and the main object is to provide a heater which can be adjusted to any angle in any universal plane and thereby project the heat rays downwardly or in any other desired direction.

Another ob'ect is to provide a reflector which will re ect the heat rays downwardly thus diffusing the heated air over a greater area than would be possible if directed upward] from its source.

Still another object is to provide a heatin device having extreme interchangeabi ity of parts, effective and simple in opertion and comparatively inexpensive in cost of manufacture.

These and other objects will become apparent in the description below in which characters of reference refer to the likenamed parts in the drawings.

Referring briefly to the drawing- Figure 1 is a transversely sectioned elevational view of the dBVlCG SlIOWiDg the constituent members in place.

Figure 2 is a longitudinal elevation of the device having the reflector and heating element remove Figure 3 is a bottom into the reflector end.

Figure 4 is an enlarged fragmentary section of the ball joint and illustrates the novel means of securin the suspended portion in an desired angu ar position.

i ure 5 is a side elevation of the heatcoil anging stud.

Referring more in detail to the drawing. the numeral 10 indicates a tubular shell having a Shoulder surmounted by the collar 11 formed at its upper end. A hollow sleeve 12 preferably of some insulating material is riveted to the exterior surface of collar ll and extends upwardly therefrom. A flanged cover 14 is secured to the upper end of shell 12 and has a centrally formed contact lug 15 thereon.

plan view looking Specification of Letters Patent.

Patented Aug. 15, 1922.

Serial No. 520,529.

Member 13 is fitted over sleeve 12 and has rounded-thread5 l6 thereon. by which the entire device can be secured in the socket fixture of an electrical circuit.

The lower end of shell 10 is formed into a pair of spaced parallel ears 17 having threaded holes therein and in which are secured the screws 18,

Screws l8 thread into the opposite sides of ball 19 and retain the same between the ears 1?. Similar screws 18' are threadably secured to the ball 19 atright angles to screws l8 and engage ears 21 thereby forming suspension pivots for the lower shell 22. It is apparent from Fi ures 1 and 2 that the shell 22 can be rotate in two planes about the center formed by ball 19 thus permitting a universal radial adjustment of the suspended shell 22 with respect to the upper shell 10.

he lower end of shell 22 forms a sleeve 23 to which is attached a parabolic-shaped reflector 24 having its internal surface 26 burnished so as to reduce heat radiation through the reflector to a minimum.

Brackets 25 riveted to the inner surface of sleeve 23 extend downwardly and have a metallic spheroidal sector 27 secured thereto.

A lurality of opened eyes 30 having threadbd stems 29 by which they are attached to the underside of member 27. are adapted to receive a heatin coil 32 arranged in the form of a spiral. Vhen assembling the eyes 30 are open and have a heat insulating strip 31, preferably of mica, cemented in lace between the ears. When attached to t ieir proper place on member 27 the heatcoil 32 is next inserted between the ears after which the latter are bent around the coil so as to form a split retaining eye and consequently readily accommodating itself to the inherent expansion and contraction due to the extreme temperature change when putting into or taking out of use.

Member 27 is preferably made of a hea resisting material. As the coil 32 is in a state of continual incandesccncc during use. an additional mica plate 28 is retained between the coil and member 27 so as to prevent oxidation and further insulate both members from each other.

In order to retain the shell 22 in the various angular positions screws 18 and 18' are provided with square projections 35 upon which are. slidably secured radially corrw gated Washers 37. Similarly corrugated washers 38 are secured in the hole 3.) by means of a forced hit. From Figure 4 it is apparent that by moving the ball 19 angularly. the washer 38 will he rotated coming to rest again in one of the other corrugated recesses of fixed washer 37. .\s the latter is urged into contact with washer 238 by the spring 36. it will he seen that the movable lower shell will he releasablv held in any desired position until further adjustment is made.

In use. the upper end is threaded into a socket fixture. through member 13 and 14 which have wires 33 and 34 res iectively, secured thereto. The said \vires extend downwardly through upper shell to and enter the lower shell 22 through the hole 20 in hall 19. after which they are joined to the inner and outer ends of the spiral coil 32 thus com pleting the circuit.

It is to he understood that eertaiu changes inform and Strl1( 'tllle.$urh as arranging the heating coilsinto difi'erent groupings. may be made. without departing from the spirit and scope of the invention.

\vire guard 40 secured over the open end of reflector 26 is provided so as to pre vent a person from tampering with the coil or otherwise endangering the same.

I claim:

1. An electric heating device eoni 'n'ising an upper and lower shell member. a para holic reflector secured to the lower member. means for energizing a heating coil and means for securing the deviqe in a socket.

2. An electric heating deviee comprising upper and lower shell members. a threaded sleeve secured to the upper shell member a cover memher above the shell member, an insulating sleeve adapted to separate the threaded sleeve from the cover secured to the upper shell member and means for energizinga heating roih 3. An electric heating device comprising upper and lower shell members. a ball pivotally suspended between ears of the upper shell member, said lower member having similar ears pivotaliy attached to the said ball at right angles to the upper shell memher, a parabolic reflector secured to the lower shell member and adapted to reflect heat rays downwardly, means for releasably retaming the lower shell in angular position and means for securing the device in a socket.

4. An electric heating device comprising an upper shell member having a threaded contact sleeve and a contact cover secured thereto, a lower shell, :1 ball pivotally connecting the shell members to each other, a spheroidal sector secured to lower shell. open-ended eye studs threadably secured to the underside of the spheroidal sector. a

heating coil secured within the eye studs.

wires extending downwardly through the several shell members connecting the, contact plates with the heating coil and means for releasably retaining the lower shell in any angular position.

5. An electrical heating device comprising upper and lower shell members having ears formed to their adjacent ends, a ball member forming a universaljoint between the said shells, screws threadably engaging the ears of the shell members and the ball. a square stud extending from said screws. ra dially corrugated washers secured in holes in the ball member, similarly corrugated washers slidably mounted on the square studs, and adapted to releasably engage the aforesaid washer, springs retained on the said studsand adapted normally to urge the washers into mutual contact with each other. and means for energizing a. heating coil.

In witness whereof I afiix my si nature.

TOBIAS'M. FE ER.

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