US1973218A - Gasoline engine starter - Google Patents

Description

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Sept- 11; 1934 J. MlKULAsEK GASOLINE ENGINE' STARTER Filed sept. 27, 1929 5 sheets-sheet 1 Sept.. 11, 1934. .1. MIKULASEK GASOLINE ENGINE ,STARTER Filed Sept. 27, 1929 5 sheetsfsheet 2 l Sept, l, 1934.. 1 MiKULAsEK 1,973,218

GASOLINE ENGINE STARTER Filed Sept. 27, 1929 5 Sheets--Sheekl 5 a/azi,

Sept n 1934 J. MIKULASEK GASOLINE ENGINE STARTER 5 Sheets-Sheet 4 @hr/Y Filed Sept. 27, 1929 Z5/verz 071 Ei/z' ya/Qe/ (gy 7 Sept. ll, 1934. J. MlKuLAsi-:K

" GASOLINE ENGINE STARTER s sheets-shet- 5 Filed Sept. 27. 1929 QQ h@ @EEE @atentecl Sept.. 1`1`, 1934 UNITED STATES GASOLINE ENGINE STARTER of Delaware implication` September 27, 1929, Serial No. 395,518

3 Claims.

The present invention relates to a novel construction of a two cycle gasoline engine or motor which is provided .with a single horizontal cyiinder, and although the engine is of general application, it is particularly adapted for Washing machines and similar uses where a small independent power plant is desired.

Among the objects of the invention are to provide a novel construction of gasoline or internal combustion engine, which is unique in design, size and compactness, and one which is admirably adapted for any use where a small power plant is desired.

A. further object of the invention is to provide a novel construction of starting clutch and foot lever adapted to start and accelerate an engine by treading on the foot lever-and transmitting the movement to the crankshaft of the engine through positive and direct acting, en-

gaging and disengaging mechanism. By this construction, the shaft is turned over by manually operating and direct acting means for producing the necessary acceleration.

Another object of the invention is to provide a carburetor construction in which the fuel is drawn from the fuel tank in the base or lower portion of the engine and through the lubricant in the crank case. This arrangement prevents looding.- The fuel is drawn into the carburetor by the same suction which also draws in the air for forming a combustible mixture, the amount of air which is sucked into the carburetor remaining constant, while the amount of fuel can be adjusted for obtaining the proper mixture for carburetion and smooth running of the engine.

A further object of the'invention is to provide a novel means and method of lubrication in which the lubricant is mixed with the fuel in the fuel tank, and then carried through the carburetor into the engine and deposited on all wearing surfaces of the engine. This fuel is forced by the reciprocating suction and compression action prevailing in the crank case, through the cylinders, piston, connecting rod, bearings, wrist pin, etc.

By this means and method of lubrication, all

wearing parts of the engine construction are continuously and positively oiled.

Another object of the invention is to provide a novel means and method of ignition in which the magneto is provided with a positive timing mechanism and is adapted to generate a spark in but one direction of rotation of the fiy wheel. The system of ignition is governor controlled,

. and the operating parts are reduced to a minimum, thus providing a simple and eiicient method of ignition.

A still further object is to provide a fly wheel magneto in which the fly wheel assembly has thereon means for circulating air for cooing the engine, the engine being provided with heat radiating ribs or fins which in combination with the ily wheel, dissipate the heat from the cylinder wall and other portions of the engine.

Another object of the invention is to provide a novel construction of crank shaft and gasoline engine. Further objects are to provide an -engine of maximum simplicity, efficiency, economy and ease of assembly, operation and repair; and such further objects, advantages and capabilities as will later more fuliy appear and are inherently possessed thereby.

The invention further resides in the combination, construction and arrangements of parts illustrated in the accompanying drawings, and while I have shown therein a preferred embodiment, it is to be understood that the same is susceptible of modication and change, and comprehends other details, arrangements of parts, features constructions, without departing from the spirit of my invention.

In the drawings:

Fig. 1 is a view in side elevation of the engine.

Fig. 2 is-a View in front elevation of the construction disclosed in Fig. l.

Fig. 3 is a view in horizontal cross section taken cn the line 3MB of Fig. 2.

Fig. 4 is aview in vertical cross section of the foot lever and starting clutch, taken on line 4 4 of Fig. 3.

Fig. 5 is a fragmentary view in side elevation of the magneto and fly Wheel.

Fig. 6 is a View in vertical cross section of a fragment of the engine and crank case, and disclosing the construction of the carburetor.

. Fig. 7 is a View in vertical cross section through the cylinder.

Referring more particuiarly to the the engine construction is mounted. upon a casting providing a fuel tank l, the casting being provided with frame extensions 2 and 3 for mounting the same upon a-washing machine or other driven means for which this power plant may be used. The fuel tank is provided with a filling opening 4 adapted to be closed by a threaded plug 5 which is mounted in the upper portion of the fuel tank so that the same may be lled only to the top of the opening. The bottom of the tank is provided with a pet cock 6 for draining and cleaning the fuel tank. The top of the fuel tank drawings,

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consists of two main assemblies; namely the armature plate assembly and the fly wheel assembly. The armature plate 77 is provided with a clamp 78 and fastened on the main bearing l1, the plate being located by the stop shoulder 79 on this bearing. This armature plate 77 is held stationary in timed position by a lug 8O and interlocking groove intermediate lugs 8l on the main bearing il. The interruptor or breaker assembly 82 is fastened to the armature plate 77 with the breaker points 83 on the upper side, this construction being for the purpose that any lubricant which Vmay pass along the bearings and lodge on the interrupter, will not collect on the breaker points, but in the lower portion of the breaker assembly. An adjusting screw 8321L permits adjustment of the lower point, .while a governor 84 is provided with means for adjusting the speed of rotation and the frequency with which breaker points 83 are opened.

The adjustment for opening of the breaker points is accomplished on the governor 84 by a long set screw 85 having a lock nut 86. This long set screw is easily accessible after the inspection plate 87 has been removed. The governor is further furnished with an adjustable tension screw 88 provided with a lock thumb nut 89, the screw having attached thereto a spring 90 anchored on lug 91. The arrangement of the governor and the breaker arm oi the breaker points is such that they will cause the magneto to gencrate a hot spark in but one direction or" rotation ci the ily wheel. Likewise the engine will operate in but one direction.

The governorv is thus provided with two adjustments, one for speed and the other for positioning the cam on the governor so that it properly engages the interruptor and opens the breaker points when necessary. The plate 87 allows for the ready ai j stinent as desired.

armature or mounting plate 77 supports a high tension coil 92, interruptor or breaker assembly S2 and condenser 93, the latter being nected thereto by means of a bracket 94. The high tension coil is located in a recess of the armature or mounting plate, the purpose of this coil being to change magnetic energy into electric current and to intensify it into a magnitude capable of developing a hot spark at the spark plug oi the engine. The coil is provided with a primary and secondary winding, the primary winding or coil being wound over a laminated iron core and charged by a permanent magnet located in the fly wheel. At each revolution of the wheel a weak electric current is induced in the primary coil, a part of the current being stored in the condenser 93.

The breaker or interruptor 82 is connected into the circuit of the primary coil so that the circuit is broken at every revolution ci the ily wheel, and the instant when the largest volume of magnetic passes through the iron core. Through the sudden interruption of 'the primary circuit and the stored electric energy in the condenser, the high tension electric current is induced in the high tension coil which is wound directly over the primary coil, and which is connected in the high tension circuit. One end of this high tension coil is grounded and the other is through the insulated connection socket in the dome and through the high tension cable 9G to a spark plug 97 in the engine.

The interruptor or breaker assembly 82 is mounted on lugs 98 cast on the armature or mounting plate and attaching means 99, to bring the breaker cantilever 98a in the path of the cani of the governor. This breaker cantilever is pivotally mounted on a stud pin on the interruptor bracket 101 and is provided with a breaker point 83 on one end and a curved end on the other. The interruptor or breaker cantilever 93@ is operated by a governor pin which strikes the curved end and is returned to normal position by a spring 102. The interruptor bracket also holds a bracket 103 having a blade or plate 100 'which is insulated from the other half of the breaker, this blade or plate-holding the other breaker point 83 which is adjustable by means of the adjusting screw 83a. To this blade or plate leads a connection from one end or" the primary' coil and the connection from one side of the condenser, the other side oi the condenser being grounded, as as shown at 10e. A

All of the working parts of the magneto are housed within the large concave center portion of the fly wheel. This includes the governor lever assembly 84 which is of the cantilever type and oscillates on a shoulder stud bolt 105 screwed into the fly wheel hub, which stud bolt also serves as a part fastening means or the r'iy wheel to the coupling disc 3d. The nut on the threaded portion of this stud pin serves as a locking means for the stud and fastening means for the y wheel.

The arm 106 of the governor is shorter, and is provided with a cam pin 107 which strikes the curved end of the cantilever or the interrupter 82. Through a tapped hole of the longer arm 103 of the governor passes the long set screw 85 for adjusting the governor into proper position with the interrupter lever and to hold it in adjusted position by taking its footing against the sleeve 71 and by being locked with the lock nut S6 against the governor aim. The same side of the governor is also furnished with the tension screw 8S for speed adjustment.

Locking means of the thumb nut 89 is accomplished by a wedge shaped rib on the contact end of the nut with the lever, and slipped into a corresponding slide in the governor arm and is heldinterlocked by the action oi the governor spring 9i). An opening is provided in the fly wheel in the irnmediate proximity of the adjusting screws oi the governor, allowing for inspection of the magneto and for making the necessary adjustments possible. The thumb nut 89 provides for speed adjustments.

Inside of the concaved portion of the fly wheel and rotatable therewith, is mounted an arcuate permanent magnet 109 provided with pole shoes 110 and lll, which act on the iron core 112 ot the primary of the induction coil 92 through the laminated arm blocks 113 and 114. l

The speed of rotation of the engine is governed by the frequency of the spark which in turn is governed by the governor in the fly wheel magneto. The engine may be stopped either by shutting on the supply of gasoline on the carburetor or by pulling'the switch 115 by means of the rod 115 against theV spark plug.

While the engine is shown as adapted 'for use with a washing machine, it is ci cou se to be understood that the same may be used wherever a small. independent power plant is desired. The simplicity and eiiiciency or the engine will be readily seen and appreciated from closure. interruptor lever will not allow the engine to run backwards. This is accomplished by the round cam on the governor acting on an abrupt dent in the interruptor lever, thus opening the breaker the above dis- I n J The constructions or the governor and ist() points for a moment at the time when the greatest amount of magnetic flux flows through the core of the coil and when the piston of the engine is approximately at its upper power stroke, and only when the engine is operating in the proper direction. When it is attempted to operate the engine in the opposite direction, the breaker points are opened when no magnetic flux passes through the core and thus no primary nor secondary current is induced,

Having thus disclosed the invention, I claim:

l. An accelerating device for internal combustion engines comprising a support, a gear segment pivotally mounted on said support, a pivoted actuating lever connected with said segment, a pinion constructed and arranged to be rotatably mounted on the crank shaft of an internal combustion engine in such position as to mesh with said segment, overthrow clutch means constructed and arranged to operatively Yconnoot said pinion and said crank shaft, means normaliy acting to yieldably hold the segment in retracted position out of engagement with said pinion, and a rectilinearly movable tooth slidn ably and yieldably mounted on one end of said segment in operative relation with respect to 'the other teeth of the segment and in such position as to be the first tooth of the segment to engage said pinion when said segment is moved opposition to said holding' means.

2. An accelerating device for internal combustion engines comprising a support, a gear segment pivotally mounted on said support, a pivoted actuating lever connected with said segment, a pinion constructed and arranged to be rotatably mounted on the crank shaft of an internal combustion engine in such position as to mesh with said segment, overthrow clutch means constructed and arranged to operatively connect said pinion and said crank shaft, means normally acting to yieldably hold the segment in retracted position out of engagement with said pinion7 fixed members carried by one end of the segment, a rectilinearly movable tooth member slidably engag-l ing said end and having longitudinal slots complemental to said iixed members, and means for yieldably projecting the tooth member to such an operative position with respect to 'the other teeth that it will bc the first tooth or" the segment 'to engage said pinion when the segment is moved in opposition to said holding means, said iiXed members limiting the slidable movement of said tooth.

3. An accelerating device for internal combustion engines comprising a support, a stub shaft mounted in said support, a gear segment pivotally mounted on said stub shaft, an actuating lever also pivotally mounted on said stub shaft and movable with respect to the segment, coinplemental abutment members carried by the segment and the shaft and so constructed and arranged as to limit Vrelative movement thereof,

a pinion constructed and arranged to be ro` tatively mounted on the crank shaft of an internal combustion engine in such position as to mesh with said segment, overthrow clutch means constructed and arranged to operatively connect said pinion and said crank shaft, means normally acting to yieldably hold the segment in retracted position out of engagement with said pinion, and a rectilinearly movable tooth slidably and yieldably mounted on one end of said segment in operative relation with respect to the other teeth of the segment and in such position as to be the nrst tooth of the segment to engage said pinion when said segment is moved in opposition to said holding means.

JOHN MIKULASEK.

CERTEFICATE 0F CRRECTION.

Patent No. ,973,218. September 11, 1934.

JGHN MKULASEK.

it is hereby certified thai error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 32, for "edgewise" read Wedgewise; and line Hi8, for "magnet" read magneto; page 4 line 92, strike out the Word "as"; and that the said Letters Patent should be read with these comectons therein that the same may conform to the record of the oase in the Patent @ffice Signed and sealed this 9th dny o October, A. D. 1931i.

Leslie Frazer ""-eal) Acting Commissioner of Patents.

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