US1303469A

US1303469A - Ignition-generatob

Info

Publication number: US1303469A
Authority: US
Publication date: 1919-05-13
Anticipated expiration: 1936-05-13

Description

I. P. GALANTIN.

"!GN|T|0N GENERATOR.

APPLICATION FILED NOV. 16. 1918.

1,303,469. Patented May 13, 1919.

2 SHEETSSHEET 1.

Mum/2 A TTORNEY I: P. GAL/mm. IGNITION GENERATOR.

APPLICATION FILED NOV. I6 1918. 1,303,469. Patented May13, 1919 2 SHEETSSHEET 2.

2% wrpiz g ATTORNEY UNITED STATES PATENT OFFICE.

IGNATIUS P. GALANTIN, OF CHICAGO, ILLINOIS, ASSIGNOR TO SIPLIIDORF ELECTRICAL COMPANY, OF NEWARK, NEW JERSEY.

IGNITICN-GENERATOR.

Specification of Letters Patent.

Patented May 13, 1919.

Application filed November 16, 1918. -Serial No. 262,759.

- at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Ignition- Generators, for which the following is a specification. i

This invention relates to an ignition generator of the permanent magnet type. In starting internal combustion engines, particularly where they are not equipped with special cranking devices, the rotativespeed is usually very low at the time when the engins is going over compression, which is the time for firing-the charge. This low rota- :trve speed 15 detrimental to getting a good cuit breaker end of the magneto.

spark from a magneto ignition genera-tor.

It is the object of my invention to provide means for obtaining a good hot spark not only at the time of initial starting of the engine but at the extreme low speeds thereof.

While obtaining a good spark as above pointed out, it is another object of my invention to properly time this spark so that the danger of back kick is entirely removed.

Another object of my invention is to provide means for attaching the starting or low running speed means to the magneto generator in such a way as to facilitate easier installation of the magneto generator onto the engine.

A still further object of my invention is to provide means for entirely inclosing the impulse device so that it will not be exposed to dust, dirt and other objectionable matter which tends to interfere with its operation.

Heretofore it has been customary to attach the starting means, which is generally referred to as an impulse coupling, onto the driving end of the ignition generator, but according to my invention the driving end is left in the same condition as in the ordinary magneto without an impulse coupling, by mounting the impulse device on the cir- In the application of my invention to a magneto, I have chosen to illustrate it in connection 1 with a magneto of the Dixie type, such as illustrated in U. S. Patent #1,126,676, of January 26, 1915, although it will be understood that the invention may be applied to other types of ignition generators.

Inithe drawings, Figure 1 is a perspective view of the magneto looking at the cam end but with the cover plate and impulse mechanism removed to show certain details.

Fig. 2 a perspective view of the cover plate removed from the end of the magneto shown in Fig. 1.

Fig. 3 is a perspective view of the assembled impulse device as removed from Fig. 1.

Fig. l is a view of the driven member with the impulse and bufi'er springs in position.

Fig. 5 is a view of the driving member constituting a part of the impulse device shown in Fig. 3.

Fig. 6 is a view of the driving shaft showin a coupling member on the drive end.

efer *ing now to the details, wherein like numbers refer to corresponding parts in the various views, 1' is a magneto having a distributor block 2 illustrated as of the four cylinder type by the terminals 3 attached thereto. The block 2 is fastened to the end plate of the magneto as by screws l. The rotating part of the magneto is hollowed and adapted to receive the driving shaft 5 on the drive end of which the coupling member 6 is adapted to be fastened in any suitable manner. The opposite end of the shaft 5 is provided with a pin 7 adapted to fit in the slot 8 of the driving member 9. Threads 10 are cut on the shaft 5 adj'acentto the pin 7 to receive a nut for holding the driving member 9-in position on the end of the shaft 5. The driven member 11 has, projecting from the back side thereof, a hollow stud 12 which carries a .cam 13 securely fastened to the stud 12 and to the driven member 11. The outer end of the stud 12 is slotted at 11 so as to leave arcuate segments 15 that are adapted to fit within arcuate slots 16 cut in' neto when the driven member 11 is inserted in place onthe end portion 17 of the shaft 5. The driven member 11 carries an impulse spring 18 and a buffer spring 19. The imulse spring 18 is adapted to be compressed by the pin 20 rigidly fastened to the driving member 9 and in fact the construction of the driving and driven members with ,the spr'ngs is similar to that shown and described in Patent #1,226,933, issued May 2-2, 1917, to Fred B. Williams, with the addition of the stud and cam on the back of the driven member 11 as above described.

Attached to the frame work of the magneto 1 is a movable breaker arm 21 carry-' lower part 27 of a cover plate, the same be-' ing fastened to the housing 26 by screws passing through the screw holes 28. The

upper part 29 of the cover plate is formed to fit in the groove 30 in the distributer block 2. Mounted within the upper portion 29 1s a tripping device 31 consisting of a pivoted dog 32 which is adapted to engage the notches 33 in the driven member 11.

From the above description it will'be seen that the drive shaft 5 is connected to the rotatable part of the magneto through the medium of the Din 7 engaging the slot 8 on the driving member 9 and the impulse spring 18 abutting against the pin 34, since the driven member 11 is fastened to the rotatable part of the magneto through the means heretofore described. Coming now to the operation of my invention when it is desired to use the impulse device, the tripping device 31 is set in the position shown in Fig. 2, by means of the push button 35 and the dog 32 will engage one of the notches 33 as the driving and driven members are rotated by the shaft 5.

v The engagement of the dog 32 with the notches 33 will prevent the driven member, and' thereby the rotatable member of the magneto, from rotating while the driving member 9 which is fastened to the shaft 5 is driven forward in advance of the driven member until either one of the cams 36 comes under the dog 32 lifting it out of either of the notches 33. As soon as the driven member 11 is released under the impulse of the spring 18 it will be rapidly advanced until it catches up with the driving member 9.

Substantially coincident withthe time of catching up of the member 11 with the member 9 the cam 13 engaged the bumper 25 opening the circuit breaker and causing the magneto to produce its spark in the usual and well known manner. After this has happened and the engine has obtained a certain predetermined speed, the number and strength of blows received on the dog 32 will throw it upward so that the pivotal line A B will pass beyond the line CD andunder the influence of the spring 37 the dog will be held out of engaging position with the driven member 1.1.- In some cases, I prefer to mount on the back of the member 11 a centrifugall operated member 38 which may take the place of the button 35; that is to say, in starting, the nose 39 of the member 38 projects outwardly from the periphery of the driven member 11 so as to engage the notch 40 on the tripping device 31, thereby tripping it down into the position shown in Fig. 2. After the engine has started the member 38 being pivoted at 41 will tend to rotate about this point so that the nose 39 will drop below the outer periphery of the driven member 11 thereby being out of the path of engagement of the notch 40 on the tripping device 31. As soon, however, as the speed of the engine lowers to a predetermined point, the member 38 will drop downward to the position shown in Fig. 3 and the nose 39 will engage the notch 40 and bring the tripping device back into operation to deliver hotter sparks.

The lower part of the cover plate 27 is preferably provided with an opening l2 in which a glass may be set for the purpose of observing the operation of the parts inclosed within the housing 26 and cover portion.

Since the cam which operated the circuit breaker is carried on the driven member the circuit breaker will not be operated and consequently the spark will not be produced until after the driven member has been tripped and advanced to a point where the engine has gone over compression so that.

no back kick will be obtained. It will easily be seen that the drlving and driven members being housed in completely, as described, are

not likely to become disabled by dirt, water and other disabling agents.

\Vhile I have shown a preferred form of the application of my invention it will be understood that numerous changes may'be made in the application and in the details entering therein, without departing from the spirit of the invention and scope of the appended claims.-

Having thus described my invention, what I claim is .1. In an ignition generator having a hollow rotatable operating member, a driving shaft extending through said hollow memher. a driving member fastened to said shaft, a driven member supported on said shaft and having a driving engagement with the generator rotatable member, resilient means associated with the driving and driven mem bers, means for causing a relative displacement between the driving and driven members. and storing energy in the resilient means'and means for releasing the displacing means so the stored energy in' the resilient means will act on the driven member to rapidly restore it to normal position for the purpose described. a

2. In an ignition generator having a hollow rotatable operating member. a. driving shaft extending through said hollow uemher, a driving member fastened to saidshaft, a driven member supported on said shaft and having a readily detachable driving engagement with the generator rotatable said trip to release said driven member for the purpose described. I

3. An ignition generator as specified in claim 1 in combination with stationary and movable circuit breaker members carried on the generator adjacent the driven member which carries a cam for operating the movable circuit breaker member as described.

. v4.'An ignition generator as specified in claim 2 in combination with stationary and movable circuit breaker members carried on the "generator adjacent the driven member which carries a cam for operating the mov-- -able-circuit breaker member as described.

5. An ignition generator. as claimed in claim 3 in which the circuit breaker, driving and driven members with correlated parts are inclosed Within a protecting housing.

6., An ignition generator as claimed in claim 4 in which the circuit breaker. driving and driven members with correlating parts 'are inclosed within a housing including a cover carrying the trip mechanism.

'7. An ignition generator as claimed in claim 1 in which the driving and driven members with correlated parts are inclosed within a liousing'including apart integral with thegenerator frame and a removablecover.

8. An ignition generator as cla med in claim 2 in which the driving and driven members with correlated parts. are inclosed within a housing including a part integral with the generator frame and a removable cover carrying the trip mechanism.

9. An ignition generator as claimed in claim 2 further characterized in this, that the driven member carries a device responsive to the speed of the generator for bringing said trip into action at a predetermined minimum speed of the generator.

10. An ignition generator as claimed'in claim 8 in which the removable cover has an inspection, device set therein.

11. An ignition generator having a ro- V tatable member and an impulse starting coupling, consisting of driving and driven members with an associated impulse spring, mounted on an operating shafton the opposite side of the generator from its drive end, said operating shaft being fastened to the driving member and the rotatable generator member'to the driven member and means for causing the spring to give impulses to the generator rotatable member for the purpose described.

12. An ignition generator having a rotatable member. a circuit breaker and an impulse starting coupling, consisting of driving and driven members with an associated impulse spring, mounted on an operating shaft adjacent the circuit breaker said driving member being connected to the operating shaft and the driven member to the generator rotatable member. means for causing the spring to give impulses to the driven member and generator rotatable member and a cam on the driven mgmber for operating the circuit breaker.

In witness whereof, I afiix my signature.

' 'IGNATIUS P. GALANTIN.