US1272949A - Combined engine and dynamo-electric-machine frame. - Google Patents

Description

1,272,949. Patented July 16, 1918 m I l M J a; Q m

\ gm INVEN D a ma? I UNITED STATES PATENT OFFICE- WILLIAM J. mar, 01 MOUNT VERNON, NEW YORK, ASSIGNOR T0 SPLI'IDORF ELECTRICAL COMPANY, OF NEWARK, NEW JERSEY.

COMQEINED ENGINE AND DYNAMO-ELECTRIC-MACHINE FRAME.

Specification of Letters Patent.

Patented July 16, 1918.

Application filed December 12, 1916. Serial No. 136,487.

vented new and useful Combined Engines and Dynamo-Electric-Machine Frames. of which the following is a clear and exact de scription.

In its broader scope my invention pertains to dynamo electric machines of that class frequently employed to perform various functions in connection with gas engines and other prime movers. in a great many power installations and especially those in which an internal combustion engine is the prime mover, the results afforded by the cooperation of certain types of electrical machines are of such an advantageous nature and secure to the entire system an eliieiency and satisfaction of operation that render their use but little short of indispensable. A striking example is the power systems in automobiles and similar autovehiclcs, in which an internal combustion engine is used as a means to propel the vehicle, and wherein dynamo electric machines are advantageously employed to cooperate with said engine for the purpose of starting, lighting,

charging and whatever other such function that may be required. More specifically then, my invention has reference to these power installations for autovehicles wherein dynamo electric machines are cooperatively associated with the prime mover for the performance of such functions as above enumerated, and it especially pertains to certain novel features in the relative construction and arrangementof these elements.

One" of the chief objects is to provide an installation of the above character such that certain structural parts of these dynamo electric machines are brought into a closer and more intimate relationship with the en gine than has heretofore been the raetice.

a the attainment of this purpose I ave arranged so that the field frames of any suitable number of electric machines are formed as an integral part of the engine itself, and inasmuch as said machines are ada ted to the performance of various duties,-t ieir location relative to certain operative elements of the'engine may be properly selected in order to render them in a position best suited to the achievement of the various functions for which they are intended.

Another feature to be derived from this invention is the relatively low cost at which an integral construction of this character may be manufactured, and furthermore assembly may be more easily accomplished;

come apparent to those skilled in the art from the following description taken in conjunction with the accompanying drawin which forms a part of this specification, an wlierein Figure 1 is a side elevation showing, in a conventional manner, an internal combustion engine of the four cylinder type, illustrating the manner and relative position in which I have associated therewith a motor and a generator.

Fig. 2 is a left hand end sectional view of Fig. 1. It will be noted that both motor and generator are shown in section and accordingly this view is taken partly on the line H and partly on the line y-y of Fig. 1.

Referring now in particular to the drawiugs, wherein like characters of reference are used to designate like parts in each of the views, 1 represents generally the casing of an internal combustion engine such as commonly used in automobiles and the like. In the figures this engine is of the 4 cylinder type. but it is to be understood that the present invention is not limited to the exact 1 As is usually the-practice the casin -1 serves to form the several cylinders for t e engine and also as a partial inclosure for the-crank shaft and its associated parts. At the bottom portion of this casing 1 are flanges 2.-A second member 3, of any desirable-shape, is adapted to cooperate with the member 1 in order -to form a complete housing for the crank shaft. Said housing member 3 is likewise provided with flanges 4 which fit up against the flanges 2 whereby said member may be secured in place as by means of belts or other suitable fastening means to .provide an oiltight casing within which said crank shaft is adapted to operate. \Vithiu this casing the crank shaft 5 is mounted by means of suitable bearings (not shown) and upon one end of which shaft is attached a flywheel 6. Said shaft is provided with cranks 7, properly spaced thereon and whose number dep -nds upon the number of engine cylinders. lo crank shaft 5 is attached, by means of crank bearings J, a plurality of connecting rods one of which is shown at 8. Connected to each of said rods is a piston 10 whereby the explosive force of the combustible gas in the several cylinders of the engine is transu'litted through the agency of the several elements above mentioned and becomes effective in imparting the desired rotary motion to the crank shaft 5. Also Within the crank casing is the timer shaft 11 which carries a plurality of cam members one of which is shown at 12. These cams are adapted to cooperate in the well known manner with the valve rods 13 whereby the explosive charges may be properly admittedjto the engine cylinders. At 14 there is seen to be a diagrammatic representation of a sparking device, such as an electrical spark plug, whose duty it is to fire the explosive charges thus admitted to the engine cylinder to which it is attached. I will not attempt to give a further and more detailed description of the operation of the engine as the same does not form any part of my invention, and is well understood by those skilled in the art to which it appertains.

Coming now to the gist of the resent invention. I have made provision w ereby the frame structure of any suitable number of dynamo electric machines may be formed in integral relationship with the casing of the engine itself. In the manufactureof engines it is frequently the custom to cast the cylinders en bloc of cast iron, and according to my invention means are provided whereby the field frames of said dynamo electric machines are incorporatedin this casting as an integral portion thereof. By thus casting these parts in one structure and in the one process a considerable saving in time and labor may be realized. I have therefore shown in the present embodiment a motor anda generator adapted for such purpose as starting, lighting and charging, and which are integrally associated with the engine in accordancenvith my invention. The field frames of these machinesarc represcnted'by the characteys 15 and- 16 respectively. Since it is often preferable that the starting motor be adapted to apply its turning effort to the flywheel of the engine for the purpose of startin the same, I have provided to have the tie] frame 15 of said motor located, as shown, at the rear end of the frame 1 in order that the motor armathre shaft 17 may be in its most advantageous position to engage the flywheel 6. One suitable method 'by which suchen' gagemcnt may be accom p ishcd is the use of the so-called Bendix drive, the driving pinion of which is adaptedfto automatically en gage and cooperate with the teeth 18 on the periphery of flywheel 6. ()n the other side of the engine and preferably near the front end thereof is the lighting and charging generatorwhieh likewise has its field frame 16 cast as an integral part of the engine casing 1. By locating the generator in this position it may be very readily connected with the timing shaft 11, to be driven thereby, as by means of gear, chain, or other suitable driving connections. However, it will be understood, of course, that either the generator or motor may be connected direct] to the crank shaft 5, and that furthermore t eir respective locations relative to the engine frame 1 is not restricted to the exact showing of the present embodiment but may be changed if desired to any suitable location, such as best adapts them to the particular enginewith which they are to cooperate. Frames 15 and 16 have integral pole pieces 19 and 20 which may be ofany suitable number depending upon the particular design of the machine. In order to obtain arein forcement for thesupport of said frames 15 and 16 and to avoid the liability of dangerous stresses being set up in casing 1, due to the operation of the dynamo electric machines, as for instance the starting of the engine, I have provided supporting brackets 21 and 22. These brackets are in form of flanges as best seen in Fig. 1 and are cast as an integral part of the dynamo machine frame and the engine casing.

From the above description it will. be apparent that my invention involves a very desirable and economicmeans of associatin the auxiliary dynamo electric machines witE the engines of the ower systems of motor vehicles. Among tie features which it secures is the economic manner in whicha construction of this type may be manufactured. For instance, as described, the field frames .of any suitable number of machines, their pole pieces andsupporting brackets may all be cast in a, single process as an integral part of the engine casing. And when the engine is set up to be machined, any necessary machinin may be likewise applied to the frame structures of said dynamo electric machines. In the subsequent assembly ofsaid machines the field coils may be quickly applied -in position, the armatures inserted, and the end plates bolted in osition on the machined ends of said field rarnes.

It will be apparent that I am not re-.

stricted to the exact details shown and described as many changes and alterations may be made without departing from the'spirit of the resent. invention. It is believed that all sue changes will cgme within the scope of the appended laims- Having thus described my invention what I claim is 1. In combination an engine and a plurality of dynamo electric ma'chines,a casing for said engine, a field frame and pole pieces foreach of said. dynamo electric machines and support brackets for said frames, said casing, frames, pole pieces and brackets all being formed as a single integral unitary structure.

2. An internal combustion engine and a plurality of dynamo electric machineshaving in combination, a casing serving to form the cylinders of said engine and also as a housing for the crank shaft thereof, and a field frame for each d namo electric machine having pole pieces t ereon and projecting inwardly therefrom, said field frames bein formed integral with the engine casing, and adapted to receive rotating a'rmatures between said pole pieces.

In combination with an automobile engine, an electric motor for the purpose of starting said engine, and an electric generthe field frame and pole pieces of both motor ntor adapted to be operated by said engine.

and generator being cast integral with the casing'of saidengine.

4. In combination with an autoveliicle en- .gine including a casing therefor, a crank shaft and a flywheel operated by said shaft,

tegral with the engine casing.

5. A combined engine and dynamo electric machine structure comprisin a casin for said engine, and a field frame for sai dynamo machine having inwardly projecting pole pieces with a rotating armature therebetween, said casing, frame and pole.

pieces being formed integral with each other.

6. In, combination, an internal combustion engine having a crank case the walls of which are of magnetic material, and a p111 rality of dynamo electric machines having their field structures of magnetic material, one of said dynamo electric machines acting as a starting motor for said engine and another of the dynamo electric machines actin as a generator for producing electrical current, said field structures bein cast integrally with the crank case of said engine.

In witness whereof I aflix my signature.

WILLIAM J. HART.'

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