US1063947A - Magneto. - Google Patents

Description

H. ADELSOHN.

MAGNETO,

APPLICATION FILED 211.111, w10.

Patented June 10, 1913,

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MAGNBTO. APPLICATION FILED APBJG, 1910.

1,063,947, l Patented Jun@ 10,1913.

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HARRY ADELSQHN, F BROOKLYN, NEW YORK.

MAGNETQ.

Specification of Letters Patent.

Patented June 10, 1913.

Application filed April 16, 1910. Serial No. 555,881.

'- To 'all 4whom. c' may/concern.'

Be it known that I, HARRY AnnLsoHN, of the city of Brooklyn, county of Kings, State of New York, have invented certain new and useful Improvements in Magnetos, of which the following is a full` clear, and eX- act specification, such as will enable others skilled in theart to which it appertuins to make and use the same.

My invention-.relates to a means by which the magneto or generator supplying a spark to an internal combustion engine may be caused to operate without cranking the engine, thereby allowing the machine to be started by a slight motion on the part of the driver which does not necessarily involve his leaving the seat of the machine.

Particularly, my invention relates to the application of such a device to a magneto with which a distributer is geared in such a manner that. the starting operation of the magneto will not disturb the distributer and thereby interfere with its necessary relation to the cylinders of the engine.

With these and other ends in view, the invent-ion consists in certain novel features of construction and combinations of parts which will be fully set forth hereinafter and particularly pointed out in the claims.

Reference is now had to the accompanying drawings, which represent, as an example, one manner in which the principles of my invention may be practically embodied. f- In these drawings-Figure 1 is a sectional elevation of the'distributer end of a magneto of the type referred to, showing my invention embodied therein; Fig. 2 is a diagrammatic section on the line 2--2 of Fig. 1, illustrating thel operation of the clutch; Fig. 3 is an elevation of the hand starting end of the magneto; and Fig. 4 is a side elevation of the magneto with part broken away to economize space on the sheet.

In the drawingsthe magneto is illustrated as of a conventional type of high tension generatorwith a distributer embodied therein and geared with the armature shaft. Thus y10 indicates the armature; 11 the magnets; 12 the armature shaft; 14 a gear turn.- ing concentrically With the armature; 15, the distributer shaft; 16, 4a gear fastened to the shaft 15 and meshing With the gear 14.; and 17, the distributer case, all of which parts, excepting, as hereinafter modified, may be of the usual and of any desired construction.

In Figs. l and fl- 18 indicates the element by which the driving motion is transmitted to the magneto. This element is here shown as a rotating shaft, which in practice is geared with or otherwise driven from the engine. The magneto may, of course, be driven otherwise, as suggested by a gear 19, indicated by broken lines in Fig. 1 and shown by full lines in Fig. 2; 20 indicating a plnlon and 21 a driving shaft for actuatlng thegear. The driving motion is transmitted to a housing 22, which is mounted loosely on the'end of the distributer shaft 15, the same bemg projected beyond the case 17 for this purpose.

23 indicates a cover plate attached to the housing 22 and forming therewith a housing inclosure for a ratchet 24. This ratchet is for and fastened to the shaft 15 and coacts with pawls 25 pivoted on studs 26 carried by the housing 22 and pressed into active posit-ion by s rings 27. The result of this arrangement 41s that the housing 22 and its paw'ls 25 when turning in the direction of the arrow in Fig. 2 transmits rotation motion to the shaft l5, but when turning reversely, the housing moves idly around the shaft. Further, the ratchet 24 being on the shaft within the housing prevents axial displacement of the housing on the shaft.

The `cover plate 23 carries a sleeve .28 which projects loosely through an orice in the face of the dist-ributer cover 17 and carries to rotate with it an insulation hub or collar 29. This has a conducting band 30 extending around its inner wall and in electrical connection with a socket tube 31, carrying a contact pin 32 and spring 33. The contact pin 32 is adapted to be turned around with the hub or 'collar 29 and its connected parts within the circular distributer case 17 and successively to contact with the conducting members 34 which are placed at suitable intervals in the inner surface of Said case 17 and respectively connected with the spark plugs of the engine, as indicated diagrammatically in Fig. 2. In accordance With the structure shown in the drawings, the current is led from the magnetoby way of a conductor 35 which passes, suitably insulated through the shaft 15, to a point coextensive with the position of the annulus 30. At this point is located a contact pin 36 pressed outward by a sprinff 37 so that the contact pin 36 is continuously in connection with the conduct annulus 30.

with a mutilated gear 39, fastened on a shaftV 40. This shaft 40may be mounted in any converte/nt or desired situation which will largely depend upon the surrounding conditions. As here shown, one end of the shaft is carried in a bearing 41 attached to the magneto, while the other end is carried in a bearing 42 which may, for example, be attached to the dashboard of an automobile in which the magneto may be installed. For the purpose oflallowing the shaft 40 to be manually rotated at will, a small Vcrank 43 is attached to the shaft and provided with a suitable stop device indicated at 4 4, where by the crank consequently and the gear 39 may be heldin the inactive position indicated in Figs. 3 and 4. This stop device 44, however, is such as admits rotation of the crank when sufficient pressure is applied to release the stop device.

The operation of the apparatus. may be traced as follows: In theA normal operation of the engine land magneto, the housing 22 will be rotated from the engine in the direction indicated bythe'arrow in Fig. 2. This will cause the pawls 25 positively to engage the ratchet 24 and the shaft 15 will be correspondingly rotated, thus driving the gears 16 and 14 and the armature of the magneto. Simultaneously, however, the sleeve 28 is rotated and this rotates the collar 29 and causes the contact ,32 successively to engage the contacts 34, thtis distributing current in proper successionto the various cylinders of the-engine Should` the engine be at'rest and it be desired to start the same, the op erator should grasp the crank handle 43 and impart a rotation to the mutilated gear 39. This causes said gear to run into the gear 38 and impart a direct rotation toy the armature. .This generates a current sufficient to produce a spark, but it should benoted that although the shaft 15 will turn at this time,

the ratchet A24 will run ahead of the pawls 25 and motion will not be imparted to the housing 22 or to the parts 28 and 29, so that the position of the distributer will not be changed, but the vcurrent will pass through the parts 36, 30, 33, 32 and 34 in the usual manner, thus allowing the current to be transmitted to the spark plugof the cylinder, the piston of which is then in position firing. Assuming this cylinder to be charged, it then follows that the charge will `b`e exploded and the engine started. The' gear 39 would instantly roll out of mesh with the gear 38 and the stop 44 will hold said gear in the inactive position shown. As the engine takes up its motion the housing 22 runs ahead in the direction indicated by the arrow in Fig. 2 and the operation of the magneto then becomes normal as described.

It will be noted that the mutilated gear 39 is shaped to have just enough teeth to run into and tuin the gear 38 exactly 180. It will also be noted that the gear 20 is of exactly onehalf the pitch diameter of the gear 19. The operator in grasping the crank handle 43 imparts a rot-ation to the mutiy lated gear 39 and this will turn the armature shaft one-half ofA a revolution and thev shaft.A 15 onequarter of a revolution. This brings each pawl to the next successive notch of the ratchet 24. The springs 27 prevent the inonientum of the arinalrure from continuing the vrotation of the latter. 'As the ratchet 24 will, during these hand turns, run ahead of the pawls 25 motion will not be'imparted to housing 22 or to the parts 26` or 29 and the position of the distributer will not be changed from the original point until the current generated by the hand turn will'pass through the parts 26-30-33-32 and 24 in the usual manner thus allowing the current l to be 'transmitted to the spark plug of the cylinder 4which may happen to be on the compression stroke and if there is a charge of gas in this cylinder it will explode and will start the engine. The butt of the distributer being directly connected with the engine andV with the ratchet, will continue rotation in the proper relation to the engine cycles. The rotation of the I armature through 180 degrees does not effect the relationship of the armature to the cycle.

,One of the important advantages of the invention is that in automobile and other Having thus'described my invention, what 1 I claim as new and desire to secure by Letters of the United States, is: y

1. The combination, with a magneto an a distributer with a rotary element, of a magneto shaft geared to said distributer, a driving element carrying the rotary element of said distributer, means for independently rotating the armature shaft', and a clutch for releasing said rotary element from positive` connection with said driving `element ,when said armature shaft is independently rotated.

2. In combination, with a magneto and a distributer with arotary element geared thereto, of a driving means for positively actuating the rotary :member of Said distributer, means for independently actuatinc the armature shaft of said magneto, an

ber and said driving means whereby the former may be driven in proper time w".h out action of said driving means.

3. The combination of a magneto, a shaft v ica i i means interposed between said rot-ary memgeared therewith and carrying a art in circuit with the magneto, a distri uter with which said part is also in circuit, means con` necting the distributor` with the source of drivingI motion, a clutch connecting the shaft and said means when the latter 1s turned in one direction, and means for independently rotating the magneto amature.

4. The combination with a magneto, of a shaft geared therewith, a distributer, a part carried by the shaft, said part being in circuit with the magneto and in electrical con nection with the distributer, a housing loosely mounted on the shaft and adapted to receive the driving motion, a clutch con necting the housing and shaft when the former revolves in one direction, and a sleeve carried Iby the housin and loosely surrounding the s aft, the s eeve carrying the moving part o the distributer.

5. The combination With a magneto, of a shaft geared therewith, a distributer, apart carried bythe shaft, said part being in circuit with the magneto and in electrical connection with the distributer, a housing loosely mounted on the shaft and adapted .to

receive the driving motion, a clutch connecting the housing and shaft'whenthe former revolves in .onedii-ection, a sleeve carried by the housin and 4loosely surrounding the shaft, the s eeve carrying the moving part of the distributor, -and means for imparting a manual'rotation to the magneto armature.

6. The combination, with a magneto anda distributer with a rotary element, of men ns connecting the rotary element of said di's In testimony whereof I have signed my' -name to this specification in the presence of two subscribing witnesses.

HARRY ADELSOHN.

Witnesses B. Breen, F. C. MARTI.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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