US1526843A

US1526843A - Electric heating element

Info

Publication number: US1526843A
Application number: US676413A
Authority: US
Inventors: Manuel D Dominguez
Original assignee: CHARLES A DENIS; GEORGE SARPY
Current assignee: CHARLES A DENIS; GEORGE SARPY
Priority date: 1923-11-22
Filing date: 1923-11-22
Publication date: 1925-02-17
Anticipated expiration: 1942-02-17

Description

Feb. 17, 1925.

1,526,843 M. D. DOMINGUEZ ELECTRIC HEATING ELEMENT Filed Nov. 22. 1923 2 Sheets-Sheet l im @mm/L7 am: w15

Feb. 17. 1925. 11,526,843

M. D. DOMINGUEZ ELECTRIC HEATING ELEMENT Filed Nov. 22. 1923 2 Sheets-Sheet 2 Dom/vowel leans and State of Louisiana,

ffollowing is a specication.

electric heatlng Patented Feb. 17"k 1925.

A UNITED sTATl-:s PATENT OFFICE.

MANUEL D. DOMINGUEZ, 0F

NEW ORLEANS, LOUISIANA, ASSIGNO 0F ONE-HALF TO CHARLES A DENIS um ONE-HALF ro GEORGE smi?, Born or NEW ORLEANS,

i ELECTRIC HEATING ELEMENT.

LOUISIANA.

Application nled November 22, 1923.

To all 'wwm t may concern;l

Be it known that I, MANUEL D. `DOMIN- Gonz, a citizen of the United States, residing at New Orleans,

in the parish of Orhave invented certain new and useful Improvements in Electric Heating Elements,

The invention relates to elements, and has as an object the 0f which the provision Aof a heating element adapted to be placed within a coiled conduit through which liquid maybe passed and heated by from the resistance coils forming the heating element.

radiation a part of A further object of the invention is the provision of a heating element which 'may' be assembled and handled as a unit, whereby the same may be removed as a whole from its position of use and replaced by a like element when necessary. A furt er object of the invention is the provision of a heating element which is simple ble and rugged and to assemeiiective in use.

Illustrative embodiments of the invention are shown in ing, in which- -Fig'ure 1 is a side central vertical section.

Figure 2 is a plan view. Figure 3 is a elevation,

the accompanying drawpartly in plan view and Figure 4 is a detail side elevation of a. modification.

Flgure 5 is a plan view and is a detail side vlew of a further tion.

Figure 6 modifica- As shown in Figs. 1 and 2, the element comprises

end plates

10 and 11 of conducting material, such as copper or brass, each mounted upon a plate material. To

the coils are openings 15 in the 12 or 13 of insulating provide electrical contact between the helical resistance elements 14 and p the

respective plates

10 and 11, the ends of shown as brought through small plates through correspending openings in the insulation plates 12 andl 13, and as clamped under of screws 16 seated in tapped op the heads enings in the

plates

10 and 11, and if desired also penetrating into tapped openings in the

plates

12 and 13.

To hold the device in assembly, and also to serve as an electrical conductor from the plate 11 to one of the terminals of t a rod 17 is shown as secured to he device, plates 11 the serial 1ra. 676,413.

and 13, as by means of

lock nuts

18, 19, being in electrical connection with the plate 11. The plate 12 is preferably'seated upon a nut 20 and the rod 17 passes through the plates 10 and v12, being msulated from the plate 10 by means of a washer 21 formed of insulating material. A second washer 22 also of insulating material permits the.

the rod 17. The provided with holes which seat over the upturned porwires 25 to maintain the position of rotation of the plates upon the rod 17, such position being such that the openings 27 in the plates 24 for passage of the resistance elements 14 shall remain in al1 nment. y

ne terminal of the device is shown in form of a rod 28 secured to plates 10 by means of

lock nuts

29, 30, which terminal is provided with a lock nut 31 for clamping of an electrical conductor thereto. The second terminal 32 is shown as secured to a bracket 33 by means of

lock nuts

34, 35 holding the same in electrical connection therew1th, and as provided with a lock nut 36 for attachment of an electrical conductor. The bracket 33 is clamped against the insulating washer 22 by means of the nut 23 and is thus in-electrlcal connection with the rod 17 and plate 11, but has no electrical connection with plate 10.

en assembled as shown and described the heating element as a whole makes up a unitary structure which may be freely handled wit-hout fear of disarrangement of parts, and in which the resistance elements are freely exposed, whereby they may radiate their heat to the turns of a fluidcontaining coil in which they may be housed, as shown in my co-pending application, Serial Number 709,902 liled April 29, 1923. In the form of the device shown in Figs. 3 and 4, the rod-17 is provided to hold the device in assembly as a unit, while the hooks 25 are utilized to support and align the openings in the insulating plates shaped wires 25 are showni Howeveig in this form of the device the-rod 17' is not utilized as an electrical conductor. The end plate 37 is 'an insulating plate and carriesno plate of conducting material I corresponding to plate 10 of Fig. 1.

To connect the resistance coils in series, there are shown binding screws 38, and the ends of the coils 39 are carried through small openings in the plate 37 and the two ends to be connected are clamped by means of the nut 40 on the binding screw. ,To connect the end elements of the series of resistance coils with the

terminal rods

41, 42 there is shown a ba'r of insulating material 43 mountedupon an extension of therod 17 by means of a pair of lock nuts 44, and plates of conducting

material

45, 46 are carried one at each end 'of the bar 43. The binding screws to'be connected with the

plates

45, 46 are so connected by means-of strips 47,

v48 attached to the plates by means of screws .49, 50, thus lacing the resist-ance coil at each end of the series in electrical conducting relation with the

terminal rods

41, 42. These rods will be rovided at their upper ends with lock nuts not shown) correspondin to those at 31, 36 in Fig. 1.

gl'he advantage of the forms ot the device shown in Figs. 3 to 6 inclusive is that they may be made much shorter than the form of Figs. 1 and 2, by reason of the fact that the resistors may be placed in series. If it be desired to place series groups of the resistors in parallel with this form of the device the

screws

51, 52, 53 and 54 ma be utilized for the attachment of the in 'viduals of the parallel groups in addition to the screws 49 50. A

ln the form of the device of Figs. 5 and 6, the ends of the resistor coils which are to be placed in series are 'twisted together, as shown at 55, and the ends of the end coils ofthe series are attached to the

binding screws

56, 57. This form of the device also diiers from that of Figs. 3 and 4 by the form of the

plates

59, 59 carried by the insulati bar 43. In this form of the device also ad itional

binding screws

60, 61,

y

62 and 63 are provided, whereby three groups of series connected resistors may be connected in parallel in conductive relation to the terminal.

rods

41 and 42. The bar 43ein this case' is mounted upon the central rod 17, which will also carry spacing plates (not shown) correspondin to those at 24 and 24 already described. gIhe resistors may be placed in series throughoutif the device is to be used with a current of high voltage.

Minor changes may be made in the physical embodimentof the invention without departing fromits spirit.

I claim:

1. A heating element comprising a supporting and conducting rod, terminal Yplates mounted upon` saidvrod, perforated plates of insulating material mounted upon said rod,

means carried by the rod to hold said plates d in fixed relative posit-ion of rotation, the perforations in said plates vbeing in alignment,

resistance elements in .electrical connection wlth sald terminal plates and! passing 'lov through said aligned perforations, and.A

means for connecting said terminal plates in an electrical circuit.

2. A heating element comprising, in combination, a supporting rod, terminal plates mounted upon said supporting rod, said terminal plates having tapped openings and a Wire receiving perforation adjacent each opening, resistance elements having their termina-ls passed through said perforations,

clamping screws engaging said tapped openings and clamping the ends of said resistance elements to said plates, and means to connect said plates in an electrical circuit.

3. A heating element comprising, in combination, a supporting rod, a terminal plate clampedto an end of said rod in electrical connection therewith, a second terminal plate mounted upon the remaining end of said rod and electrically insulated therefrom, an electrical terminal conductively mounted upon the end of said rod adjacent v said last named plate, a second electrical terminal electrically connected to said rod, a plurality of insulating Vspacing plates having aligned perforations and mounted upon said supporting rod, resistance elements passing through said aligned openings and havin their ends electrically connected to said p ates.

. MANUEL D. DOMINGUEZ.