US1005395A - Fuel-heater. - Google Patents

Description

M. J. WOHL dz A. A. LOW.

FUEL HEATER. APPLICATION FILED OGT.17.1907.

' INVENTORY ATTORNEYS Patented 0ct. 10, 1911.

UNITED STATES PATENT OFFICE.

MAURICE J'. WOHL, OF NEW YORK, AND ABBOT AUGUSTUS LOW, OF HORSESHOE,

YORK; SAID WOHL ASSIGNOR TO SAID LOW.

FUEL-HEATER. 7

Specification of Letters Patent.

Application filed ctober-,17, 19 07. Serial No. 397,913.

and Statev of New York, and Horseshoe,

- county of St. Lawrence, and State of New in elevation, cooperative "clamping members.

York, have invented a cerlainnew and useful F uel-Hea-ter, of which the following is a specification.

This invention embodies means for heat- ,ing a liquid combustible prior to its admission into a vaporizer or carburetor usually associated with internal combustion engines, although it should be understood that the invention may be employed for heating other fluids, and that it may be used in other arts than explosive engines.

The-invention is susceptible of embodi ment in various forms of mechanical and electrical constructions, but, stated generally, it embodies a metallic pipe, adapted to permit the flow of a liquid therethrough, said pipe being bent for increasing the area of contact for the combustible liquid'adapted to flow thcret-hrough, (one or more) occupying such relation to the conduit as to heat the liquid therein, and means whereby an electric current is supplied to said resistance.

In a practical form of the heater, a bent fluid carrying pipe lies between two electrical heater elements, the latter comprising windings of metallic wire or ribbon coiled on insulated cores, said heater elements being insulated electrically from metallic contact with the said pipe and, also, from These members are composed, preferably, of metallic plates which are operated by screws, or their'equivalents, for clamping the heater elements into close mechanical engagement with the interposed pipe, for the purpose of heating the latter by the heat developed in the windings on the passage of an electric current through the same.

In the accompanying drawin s, we have illustrated a practical embodi ent of the ,mvention, but the construction shown therein is to be, understood as illustrative, ,only, and not as defining the limitsof the invention. I Figure 1- is a longitudinal section, partly of the new liquid fuel heater in relationto a vaporizer or car- 'the plane of section in Fig.

an electrical resistance 'ments and the doubled bureter of an internal combustion engine. Figs. 2 and 3 are, respectively, a side view and a horizontal section of the liquid heater, 3 being indicated by the dotted line of Fig. 2.

The heater is adapted to be connected with a vaporizer, D, by a suitable branch pipe, (7, whereas the pipe. A, is supplied with liquid from a. pump, tank, or other source (not shown). It is evident. however, that the electrically heated device may be used in connection with other structures than carburetors. As shown in Fig. 1, the carburcter, D, consists of an elbow, (Z, adapted to be fastened to the head, I), of an engine cylinder, said head having an intakeport, c, which is closed normally by a valve, E, the stem, 0 of said valve being operated by a lever, F. The elbow of the carburetor is shown as having an air inlet port, 9, the areaof which may be regulated by the adjustment of the valve, G. The carbureter is mounted on the cylinder head to be heated by the heat developed-in the engine during its operation, but for the purpose of initially heating the carbureter when starting the engine, we have ,Shown said carburetor as being provided with electrically operated heating appliances, G, the latter forming no part of the presentinvention.

The form of liquid heater illustrated in the drawings embodies a pipe, A, which is doubled or bent into the approximately S- shape illustrated more particularly in Fig. 3. Said bent or doubled pipe, A, is confined between two electrically operated heating elements, IT, H,.cach heating element consisting of a core 71. and a winding, h,

the latter being composed of a metallic wire or ribbon which is coiled on the insulated core, h. The heater elements, II, II, are applied to the top and bottom faces of the doubled pipe, A, and between the resistance windings, It, of the two heater elepipe there are interposed layers, h if, of insulating material. The doubled pipe H, H, are held mechanically in close contact by clamping'plates, I, I, but these clamping plates are insulated electrically from the resistance clamping members, I, I, are metallic plates which are. drawn toward each other by suitable bolts or screws, 2', whereby the plates Patented Qct 10, 1911.

and the heater elements,

coils or windings, h, by layers, 71 of insulating material.

or members draw the heater elementsQH, H", into close contact with the doubled metallic pipe, A.

It is preferred to employ thin layers of mice as the means for electrically insulating each heater element from the metallic pipe and the clamping plate, for the reason that the mica layers operate effectually in electrically insulating the Winding, h, from the metallic parts While, at the same time, said layers permit the free transmission of heat from the resistance winding to the doubled metallic pipe. If desired, the heater shown in Figs; 3 and 4 may be incnsed Within a suitable jacket composed of a non-conductor of heat.

Having thus fully described the invention, what we claim as new, and desire to secure by Letters Tatentis:

1. Lin :1, fuel heater, a fuel pipe adapted to supply a herded combustible liquid, said fuel pipe being bent for increasing the arc-u of contact for the combustible liquid adapted to flow therethrough, and an electrical resistance cooperating with said bent liquid pipe, whereby the combustible liquid adapted to flow through said bent pipe is heated.

2. In a fuel heater, :1 fuel pipe bent for the purpose of increasing the area of the heating surface for the liquid combustible, electrical resistances applied externally and to the respective faces of said bent pipe, metallic plates engaging with aid resistances, and means for clamping the resistance and metal plates in fixed relation to the bent or doubled pipe.

In testimony whereof we have signed our names to this specification in the presence of two subscribing Witnesses.

MAURICE J. WOHL. ABBOT AUG hTUS LOW. lVitnesses M. A. WARREN, Geo. ll nurse Gmnmcs.

on w,

Images