US1282172A - Electric starter. - Google Patents

Description

1. means. ELECTRIC STARTER.

APPLICATION FILED APR. 26, 1916-.

1,28% l72 Patented Oct; 22, 1918.

3 SHEETS-SHEET I.

J. A. BURNS. ELECTBIOSTARTEB. APPLICATION man APR.26. 191s.

Patented 0222,1918.

3 SHEETS-SHEET 2.

J. A. BEIRNS. ELECTRIC STARTER.

APPLICATION FILED APR. 26. 1915.

1,282,172. Patented Oct. 22, 1918.

3 SHEETSSHEET 3.

ammtoz and defeating the 59333 A. BEERNS, F DETRGIT, MICHEGAN.

ELECTRIC STARTER.

plosive engine without any "danger of back firing injuring the device or a person in the vicinity of the same.

The primary object of my invention is to provide an electric starter of the above type wherein positive and reliable means are employed, in a manner hereinafter set forth, to

compensate for sudden jars or shocks in-' curred when placing the starter in operation and transmitting the power thereof to an engine shaft, such shocks often resulting in broken or strained connections detrimental purpose of easily starting an engine. l p

'Anotherobject of my invention is to provide an electric starter embodying a planet,

ary eccentric gear, which not only constitutes a reduction gear but. constitutes a yieldable connection between a rotary armature and a starter shaft, and a novel over,- running clutch permits of this same starter shaft being manually operated for turning over an engine shaft when necessary.

A further object of my invention is to provide an electric starter for automobiles that is applicable to various types of machines and is composed of compact, durable, inexpensive and easily assembled parts. l

The above and" other objects are attached by a mechanical construction that will be hereinafter described and then claimed, and

reference will'now be had to the drawings, wherein n Figure l is a side elevation of the electric starting device as applied to an automobile;

Fig. 2 is an enlarged longitudinal sectional view of the starting device;

Fig. 3 is an end view of a portion or the Specification of Letters Patent.

Patented 22, lli llliio Application filed April 26, 1916. Serial No. 9330!.

same, partly tion, and I Fig. 4 is a plan of the startingdevice illustrating its relation to a support and engine shaft. v

in describing my invention by aid of the views above referred to l desire to point out that the same are intended as merely illus trative of an example whereby my invention may be applied in practice, and I do not carevto confine my invention to the precise construction and arrangement of parts shown.

The following description is therefore to be broadly construed as including substitute constructions and arrangement of parts which are the obvious equivalent of those to be hereinafterreferred to.

the drawing, .1 denotes a cylindrical casing provided with an integral spider 2 supporting a bearing 'orbushmg 3 concentrically of the casing 1.

4 denotes a closure plate connected to the rear end of the casing 1 by screw bolts. 5 or other fastening means, said closure plate constituting an ofiset rear wall for the casing and concentrically of said closure plate there is a supporting sleeve 6 which has the outer end thereof 'screwthreaded, as at 7. y

8 denotes a starter shaft journaled in the sleeve 6 and having the inner end thereof provided with reduced portions 9 and 10,"the latter being screwthreaded. The reduced portion 9 is journaled in the bushing or been ing 3, and the threaded reduced end 10 of the starter shaft is provided with a clutch memher 11 whereby anordinary hand operated starting crank may be applied to the end of the starter shaft for manually turning the same.

l2 denotes a bushing on the reduced portion 9 of the starter shaft abutting the hearing or bushing 3 and revoluble on the bush ing 12 is the hub 13 of an armature 14. This armature'is ofa conventional form includbroken away and partly in secing armature plates, windings, commutator and suitable insulation. The armature is concentric of the magnetic field carried by the casing 1 composed of ole pieces 15.

l6 denotes an, eccentric oose on the bushing 12 abutting the hub 13 of the armature 14, and encircling the hub 13 or: the

may tend to strip the internal rack or pinion of teeth and with the antifrictional bearings cooperating with the springs 17 it is practically impossible for the motor to injure connections with the engine shaft 1. In an electric starter, the combination with an engine shaft, a starter shaft, and means adapted for couplin said starter shaft to said engine shaft, 0 a motor having a revoluble armature, a planetary eccen tric gearing actuated by the motor armature for imparting movement to said starter shaft, and a yieldable connection between the motor armature and said planetary eccentric gearing. v

2. In an electric starter, the combination with an engine shaft, a starter shaft, and

means adapted for coupling said starter shaft to said engine shaft, of a motor for imparting a rotary movement to said starter shaft, an eccentric on said starter shaft and having a yieldable drive connection with the armature of said motor, and a planetary eccentric gearing actuated by said eccentric and adapted to impart movement to said starter shaft.

3. In an electric starter, the combination with anengine shaft, a starter shaft, and a means for coupling said starter shaft to said engine shaft, of an electric motor having a revoluble armature, an eccentric .on said starter shafthaving a yieldable drive connection with the armature of said motor, a planetary eccentric gearing actuated by said eccentric and adapted to impart movement to said starter shaft, and anti-frictional bearings between said eccentric and said planetary eccentric gearing.

4. In an electric starter, the combination with an engine shaft, a starter shaft, and means adapted for. coupling said starter shaft to said engine shaft, of a motor casing at the outer end of said starter shaft, a \revoluble armature within said motor casing, an eccentric on said starter shaftwithin said casing and having a yieldable drive connection with said armature, and a planetary eccentric gearing actuated by said eccentric and adapted to impart movement to said starter shaft. 7

In testimony whereof I afiix my signature in the presence of two witnesses.

JOHN BEIRNS.

Witnesses:

ANNA M. Donn, KARL H. -.BUTLER.

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