US1573883A - Dynamo-electric plant - Google Patents

Description

Feb. 23 1926.

M. A. IINING DYNAMO ELECTRIC PLANT Filed June 2, 1921 3 Sheets-Sheet 1 ZZZ Feb. 23 ,1926.

M. A. VINING DYNAMO ELECTRIC PLANT 5 Sheets-Sheet 5 Filed June 2, 1921 M. A. VINING DYNAMO ELEGTRI C PLANT Feb. 23

Filed June 2, 1921 3 Sheets-Sheet 5 Patented Feb. 23, 1926. I

UNITED STATES 1,573,883 PATENT OFFICE.

MERRITT A. VIKING, OF ELYRIA, OHIO.

DYILAMO-ELECTRIC PLANT.

Application filed June 2,

To all whom it may concern:

Be it known that I, MERRITT A. VINING, a

citizen of the United States, residing at Elyria, in the county of Lorain and State of of this type which employ an internal combustion engine directly connected to a generator and having the same mounted as a unit ,;on a common base.

Some of the objects of the present invention are to provide a plant of this character which shall be simple in construction, inexpensive to manufacture and yet reliable and efficient in operation; to provide aplant of this character which shall be semi-automatic in control and hence easily operated by inexperienced persons; to provide a novel combined crank case andbase which shall'reand Fig. 6 is a detail vertical sectional view through the outer end of the generator casing and showing the armature and associated. parts in elevation.

Describing the various parts by reference V characters, 1 indicates the combined crank case and base of the unit which is preferably in the form-of a: casting. This casting as shown. in Figs. 1-3, is provided with inner walls 2 and'outer walls 3, said inner walls forming a part of the crank case and said outer walls being spaced therefrom to define an air space about the sides 4 and ends 5 of the crank case. At'their upper-ends the mner walls merge into a circular flange 6 to which the en 'necylinder 7 is secured, while the outer wa ls merge into a larger flange 8 to which is-fitted a cylinder hood 9. A plural ity ofarms 10 (Fig. 3) interconnect the 1921. Serial No. 474,339.

flanges 6 and 8 and define a plurality of air passages 11- therebetween.. At their lowerends, the inner and outer walls merge into a hollow base portion 12in spaced relationship, and intermediate of said flanges and base portion, said inner walls are provided with longitudinal openings therethrough which are normally closed by bearing caps 14 14. The outer Walls are alsoprovided with larger openings in alignment with the aforesaid openings and these larger openings are normally closedv one by a fly wheel and the other by a disk 15 intersposed between the generator and the outer walls.

As shown in detail in Figs. 1 and 4, each bearing cap 14 is bolted to the inner walls 2 and cooperates therewith to form a fluid tight enclosure about the engine crank shaft 16 which is j ournaled in roller bearings 1717 in said caps. A. fluid tight seal is provided in each bearing cap about the crank shaft and said seal is preferably formed by inserting a plurality of cork rings 18 in a co mterbore 19 formed ineach bearing cap about the crank shaft 16.. A metal disk 20 is next inserted and a spring retaining wire 21 serves to hold the parts in compressed relationship.

Referring now to Fig. 1, it will be seen that T preferably employ a two-cycle air cooled engine which is of the usual type and comprises the cylinder :7 having a piston 22 slidably mounted therein and connected by means of a connecting rod 23 to the crank shaft 16. The explosive mixture is drawn in' through an intake pipe (not shown) into the crank case where it is compressed by the downward motion of the piston and forced up through the bypass 24 into the engine cylinder, the exhaust gases being forced through the exhaust opening 25 in the usual manner. A fly wheel 27 provided with a plurality of radial fan blades 28 is mounted on one end of the crank shaft and is disposed in the forward opening defined bythe outer crank case walls 3. The fly wheel is adapted to draw air down through openings 29 formed in the top zportion of the cylinder hood 9 and this air draft passes over the int cylinder cooling fins 30 and thence between I the inner and outer walls of the crankcase 'mally closed by aperforated cap parts some of its heat thereto which serves to facilitate the vaporization of the incoming explosive charge. It will thus be seen that" with the ventilating system employed I distribute the engine. heat to the best advantage and not only cool the cylinder but utilize the heat'therefrom for vaporizing the incoming charge and also cool. theair which is expelled from the fly wheel.

The end of the crank shaft opposite the fly wheel is connected to the armature shaft of a generator which is preferably of the nt wound type and provided with a third b sh 33 (Fig. 5) for supplying current to the engine ignition system. The generator casing 34 is mounted on the base casting 1 and is connected to the peripheral portion of the rear opening in the outer ,walls thereof, as clearly shown in Figs. 1. and 4. The commutator end of the generator is nor- 35 and the armature shaft is fitted with a suitable fan 36 for. drawing the air through the perforated cap and over the generator windings, the air being expelled through suitable slotted openings 37 formed on the lower half of the generator casmg. The disk 15 dividing the generator casing and base casting serves to prevent the generator cooling draft from entering and admixing withthe cylinder cooling draft where it would tend to cool the crank case walls and especially be apt to cause a cooling efiet on one side of said crank case which would prevent eflicient vaporization of the explosive charge in the crank case.

As shown in Figs. 5 and 6, the commutator end of the generator is provided with a suitable bracket 40 on which is mounted a rotatably adjustable disk 41. This disk mounts a pivoted contact arm 43 and a stationary post 44 which has an adjustable contact screw 45 threaded therethrough and dis posed in operative relation to the co tact carried by arm 43. A stud shaft 46 pr jects from the end of the armature shaft and is provided with a canf surface which is adapted to contact with arm 43 to cause the contact points to open and close and hence make and break the primary circuit of the engine ignitionsystem at the. proper time.

The disk 41 may be rotated in either direc-.

tion by loosening screws 47- -47 and thus timing of'the engine is easily accomplished. A condenser 48 which is shunted across the contact points is located on the rear side of the bracket 40.

A fuel tank 50 is mounted onthe generator casing and has operative connection 'with the en e: The switch board 51 is also mounte on the generator casing and is provided with the usual instruments including a starting and stopping switch 52,

of any approved design.

From the foregoing description it will be longitudinal said inner and outer walls and arran ed 1n obvious that I have provided a simple and easily constructed device. The basecasting requires a machined surface only about ,the

periphery of each of the bearing cap open- 1. In a device of the character described, Y the combination with an engine having a. crank case and base and including inner and outer walls arranged in spaced relationship, said inner and outer walls being provided each with a pair of oppositely disposed 0 enings therein, bearing caps closing each 0 the openings in said inner walls, means closing one of said openings in the outer walls, an

a fly wheel rotatably mounted in the other of said openings.

v 2. In a device of the character described, the combination with an engine having a crank case andfbase and including inner andouter walls arranged in spaced relationship, said inner and outer-walls being provided each with a pair of oppositely disposed openings therein, bearing caps closing the openings in said inner walls, an electric machine mounted on said outer walls and closing one of said outer wall openings, and a fly wheel rotatably mounted in the other of said outer wall openings.

3. In a device of the character described, the combination with an engine having a vcrank case and base and including inner and outer walls arranged in spaced relationship, openings extending through coaxial alignment, a bearing cap cIosin each of said inner wall openings, a cran shaft journaled in said bearingl extending through said outer wa openings, a fiy wheel mounted in one ofsaid outer wall openings, a partition closing the other .of said outer wallopemn s, and an electric machine mounted on said outer 'walls and operatively connected to. said crank shaft.

outer walls arranged in spaced relationshi lon tudinal openings extendin throng sai inner and outer walls, an arranged in coaxial ali ,ment, a bearing cap closin each of said inner wall openings, 9. cr

shaft journaled in said bearing caps and caps and use In a device of the character described, the combination withan engine having a crank case and base and including inner and extending through said outer wall openings, a fly wheel mounted in one of said outer wall openings, means closing the other of said outer wall openings, and an electric ma.- c'hine operatively connected to said crank shaft at the end opposite said fly wheel.

5. In a device of the character described, the combination with an engine having a crank case and base and including inner and outer walls arranged in spaced relationship, said outer walls bein provided with a pair of oppositely dispose openings, a crank shaft extending through said openings, :1. fly wheel mounted on one end of said crank shaft and rotatably mounted in one of said openings, and an electric machine operatively connected to the opposite end of said crank shaft and normally closing the other of said openings.

6. In a device of the character described, the combination with an en 'ne having a crank case and base and including inner and outer walls arranged in spaced relationshi longitudinal openings extendin said inner and outer walls, an arranged in coaxial alignment, a bearing cap closing each of said inner wall openings, a crank shaft journaled in said bearing caps, a fan mounted on said crank shaft and rotatably supported within an outer wall opening,.a cylinder mounted on said inner walls, a hood surrounding said cylinder and mounted on said outer walls, said fan being adapted to draw air through said cylinder hood and between the inner and outer walls of the combined crank case and base, and electric machine mounted on the outer walls definin an opening opposite said fan opening, an means for circulating an 'air draft through said electric machineindependent of sa1d engine draft.

7. In a device of the character described,

the combination with an engine having a crank case and base, and including inner and outer walls arranged in spaced relationship,

throng signature;

of a cylinder mounted on said inner walls, a cylinder hood mounted on said outer walls, an electric machine operatively connected with said engine, means for drawing an air draft throu h said cylinder hood and into contact with the engine crank case, and independent means for circulating an air draft through said electric machine.

8. In a device of the character-described,

.the combination with an engine having a crank case and base, and inclu mginner and outer walls arranged 1n spaced relationshlp,

of a cylinder mounted on said inner walls,

a cylinder hood mounted on said outer walls, an electric machine operatively connected with said engine, a combined fly wheel and ISIS fan for drawing an air draft through said on one end of said crank shaft and rotatably mounted in one of said openings, said fan being adapted to create an air draft between said inner and outer walls, an electric machine comprising an armature and a. field frame operatively connected to the opposite end of said crank shaft and normally closin the other of said crank case openin an meansvfor circulating an; air draft t rou h said electric machine independent of said en'edraft.

testimony whereof, I hereunto aflix' my MEnRrrr A vrmne.

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