US2612883A

US2612883A - Mounting and control means magneto for engines

Info

Publication number: US2612883A
Application number: US137236A
Authority: US
Inventors: Elmer C Kiekhaefer
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-01-06
Filing date: 1950-01-06
Publication date: 1952-10-07
Anticipated expiration: 1969-10-07

Description

1952 E. c. KIEKHAEFER 2,612,883

MOUNTING AND CONTROL MEANS MAGNETO FOR ENGINES Filed Jan. 6, 1950 5 Sheets-Sheet 1 IN V EN TOR.

Oct. 7, 1952 E, c, KIEKHAEFER I 2,612,883

MOUNTING AND CONTROL MEANS MAGNETO FOR ENGINES 5 Sheets-Sheet 2 Filed Jan. 6, 1950 INVENTOR.

Oct. 7, 1952 E. c. KIEKHAEFER 2,612,883

MOUNTING AND CONTROL MEANS MAGNETO FOR ENGINES 5 Sheets-Sheet 5 Filed Jan. 6, 1950 IN VEN TOR.

Jillorneys Oct. 7, 1952 E. c. KIEKHAEFER 2,612,883

MOUNTING AND CONTROL MEANS MAGNETO FOR ENGINES Filed Jan. 6, 1950 5 Sheets-Sheet 4 ll ll 1952 E. c. KIEKHAEFER 2,612,883

MOUNTING AND CONTROL MEANS MAGNETO 'F'OR ENGINES Filed Jan. 6, 1950 5 Sheets- Sheet 5 jl/arnefs magneto unit so as be more fully set forth parts thereof broken away Patented Oct. 7, 1952 UNITED STATE MOUNTING AND CONTROL MEANS MAGNETO FOR ENGINES Elmer C. Kiekhaefer, Cedarburg; Wis.

Application J anuary' 6, 1950,

Claims.

This invention relates to internalrcombustion engines and particularly to the magneto mounting and means for adjusting the timing of the magneto andthecarburetor to control the operation of the engine. I

The invention provides an engine magneto mounting which supports and drives a conventional magneto unit by its shaftadjacent the carburetor, and control means securing the unit against rotation with its own shaft selectively in various relative positions for Serial No. 137,236

purposes of timing adjustment together with predeterminedadjustment of the carburetor.

A principal object of the invention is to provide for greater ease of adjustment ofthe magneto unit and carburetor control particularly as in outboard motor applications of the engine.

, Another object isto dispose and support the to be directly operable as by manual outboard motor control means. I Another object-is iacent the carburetor and simplify the mechanical connection by which the -magneto and carburetor adjustments are co-ordinated.

Anotherobjectis to provide for the greater accessibility of the magneto and control therefor.

Another object isto improve and simplifythe magneto mounting for purposes of assembly and replacement and. elimination of vibration and wear. a 1

Another object is to provide for the predetermined correlation of adjustments of the magneto unit and carburetor.

Theses and/other objects and advantages will in the following description of a preferred embodiment of the invention as illustratedin the accompanying drawings.

In the drawings:

Figure 1 isa frontelevation'of part of an outboard motor including the engine with certain andsectioned;

to dispose the magneto ad- Fig. 2 is a planview of certain parts of the engine and. compietecontrol handle shown in Fig.1.

Fig. 3 is a view similar to Fig.- 2 showing the abandoned, and is supplied with fuel from a fuel pump 12 carriedby by theignition-wiresl'l to the removal of cover 20 from ment of theparts thereof. Themagneto' unit l6 Fig. 7 is a side elevation of the motorshowing part ofthe engine, the control arm and part of the control handle as securedtothe arm and disposed vertically. y

The engine I shown in the drawings is a fourcylinder, two-cycleengine of the type described and claimed in the copending application of the present inventor, SerialNumber 94,107, filed May 19, 1949 for Internal Combustion Engine,- now mounted on the drive shaft housing} of an outboard motor with the engine crankshaft 3 disposed vertically for direct connection to a drive shaft. not shown,- extending downwardly ofthe engine. The flywheel 4 is carried ;by the upper end of crankshaft 3 and abovethe gear case Sprovided at theupper end of engine I by the upper end of the engine cylinder block 6, the rigid projecting support 'l of. the engine. crankcase 8 and the cover plate 9 removably secured thereto. 7 I

The upper and lower carburetorsglil and H carried by crankcase 8 forwardly of the motor are tank, not shown. by the gear "case cover 9- and operated by the engine. as willbe described. Each carburetor l0 and H includes the butterfly valves l3 and the vertical control shafts- [4 there'- 4 buretors.

The conventional magneto unit It is connected respective individual. spark plugs, not shown. ing the stator housing is, and the timing and distributor'cover 20 of the magneto provides for the magneto for adjustincludes the rotor shaft}! which'as such rotatably supported within housing i9 bysuitable bearing means, not shown.

Accordingto the presentinvention, magneto fltis supported andcarried entirely on. its rotor engine with the magneto and carburetors in another position of adjustment; I

Fig. 4- is. an enlarged plan view of the auxiliary drive gears with the engine flywheel removed and portions of the gear case broken away and sectioned;

Fig. 5- is an enlarged. vertical sectional viewtakenon line 5-5 of Fig. 4; g

Fig. 6 is a side elevation of the control handle with. portions broken away and} sectioned to show the operating parts thereof; and

shaft. 21!, eliminatin [all other, cumbersome V .theusual timing-adjustment of the magnetoby.

and; freeing the. housing of supporting means whereby rotation on the axis of its operating shaft may be readily accomplished manually, or by remote control means, as will be described, or by automatic means responsive to the operationof the engine, According further to the invention magneto i6 is disposed immediate; and adJacent to carburetors l-lland- H and operatively connected .so that the adjustment of the carburetors and magneto is co-ordinatedandefiected simultaneously.- The invention. is intended for use'in two- The bolts l8 jolnspectively. Gears shown, carried by crankshaft 3 2|.

reduces the required size additionally provides 'drive of reduced speed lever-cam 30 carried by the shaft per carburetor and the arm 3|.

thelever-cam 30."

' by turning housing- -shaft 2|, roller 32 pushes lever 30 turning adjustment shafts 4 of carburetors 'shaft2|.'- I j The outboard motor shown in part in the'drawto the lower side 16-." The short rock shaft The squeezed grip is connected to the depending cycle engines and the like in which the co-ordinated adjustment of both the ignition timing and the carburetion must be provided for controlling the speed of the motor, and particlularly as in outboard motors where ease of control and adjustment is given particular consideration.

Shaft 2| is preferably integrally formed to project beyond housing IS a considerable distance and is rotatably vertically suspended and carried by the upper bearing 22 and the lower bearing 23 well spaced from bearing 22 and through which shaft 2| extends. Bearings 22 and 23 are carried in support 1 of the engine crankcase to dispose magneto l8 adjacent carburetor l forwardly of the engine and with the upper end of shaft 2| adapted to receive the gear 24.

The gear 25 carriedby crankshaft 3 within gear case is drivingly engaged by the intermediate gear 26. Gear 26 meshes with gear 24 and is mounted in the gear case on the shaft 21 supported in lower and upper bearings 28 and 29 carried by crankcase 8 and cover 9, re-

24 and should, of course, be of the same size so that the rotation of shaft 2| corresponds exactly with the rotation of the engine crankshaft.

Gear 26 may be eliminated if desired by providing for' the direct intermeshing'of gears, not and rotor shaft In engine the larger diameter of gear 26 of gears 24 and 25 and a convenient auxiliary for fuel pump I2.

The co-ordinatedadjustment of magneto 6 -and*carburetors I0 and II is provided'by'the M of the up- Arm 3| is bolted tothe upper face of magneto housing l6 and carriesthe roller pin 32 which'engages and rides As magneto I6 is advanced |9 'oppositely of rotation of ID and II as predetermined by the contour of lever 38 and according to the advanced position of the mag- "neto.

Spring means, not shown, normally biasing lever and shafts 4 of both carburetors in a closedor low-speed position, as shown in Fig. 2,

'serves to return the carburetors to low-speed f adjustment as the magneto is retarded by tumi'ng housing 'ings also includes the steering handle 33- projecting forwardly of the motor and by which the same is turned as a unit on hearing supporting means, not shown, for steering of the-boat.

Handle 33 is supported by the arm- 34 bolted of engine beneath magneto 35 disposed vertically in suitable bearing means in arm 34 carries the control adjustment-crank 36 at its upper end above arm 34 and the crank 31 at its lower end: 7

lever 38 pivotally carried within handle 33. control-arm 39' carried by magneto housing 9 to advance the lattenand control the same and carburetors l0 and ||,'as described.

-Lever 38 is connected oppositely tothe lever 40 which engages the abutment 4| of crank 42.

Cranks

40 and 42 are carried on the transverse I9 inthe direction of rotation of abutment 4|.

able collar 60 between bearing 22 4 pin 43 which secures handle 33 and arm 34 and by which arrangement handle 33 may be set vertically, as shown in Fig. 7, on pin 43 when in the way or not in use.

The rod 44 connecting

cranks

42 and 31, and rod 45 connecting crank 36 and the arm 39 of magneto 6 complete the mechanical connection of lever 38 and the magneto so that movement of lever 38 as by squeezing handle 33 rotates housing |9 to advance the same and adjust carburetors l0 and I3, as described.

The selective locking mechanism 46 controlled by the push button 41 at the forward end of handle 33 is disposed to engage one of a se: ries of detents 48 in lever 38 securing the latter in the selected position of adjustment. Release of lever 38 by mechanism 46 is effected by spring means upon advancing magneto control lever 38 allowing the free control of the magneto, as described.

The return of magneto housing l6 and the entire manual control mechanism, described above, to a retard position is effected principally by the spring 49 secured at one endxto housing IQ of the magneto and projecting for suitable engagement in a hole in the lower end of the magneto support 1.

It should be noted in connection with the manual effort required to move housing IQ for the necessary magneto adjustment that the sole resistance to such adjustment is the operating torque of the magneto unit including whatever frictional losses are involved therewith, and that in conventional or better magnetos such torque will be of such low values that the additional spring means 49 is necessary to ensure the -return of the control to the retard position at all times and also when the engine is not in operation. 1

If desired, the flexible control cable 50 may be employed whereby engine control may be accomplished remotely by a suitable control 1ever, not shown. The cable housing 5| is secured by the mounting 52 on arm 34 and the control wire 53 is connected to crank 36 to effect adjustment of magneto I6 andcarburetors fl'fl' and In remote control operation handle 33 may be raised whereby lever 38 is operatively disconnected as lever 40 moves out of range of In any type of control where positive manual adjustment of the magneto in both directions is preferred and provided for,-spring 49 may be eliminated entirely. 1 f f Adjustment of arm 3| is readily provided by moving the same in the arcuate slots 54-before tightening bolts-55 securing arm 3| to housing 9. The retard and advance limits of magneto unit l8-is provided-by the adjustable lock screws 55 carried by crank 36 on opposite sides of shaft 35 to engage the abutments 51 carried by arm 34.

Various provisions for the assembly and removal of magneto unit I8 may-be provided for. In engine driven gear 24 is secured to shaft 2| by the bolt 58 which-further secures the inner race of bearing 22 on shaft 2| between the shoulder 59 formed in the shaft and the removand gear'24. Removal of bolt 58 allows magneto IS with shaft 2|, arm 39 and spring 49 to beremoved' as a unit from the engine for repair or replacement; The additional auxiliary drive or power take-off shaft 6| is fitted to receive the flexible shaft, not shown, of a tachometer and the like and is car'- claims.

ae aess ried conveniently forwardly. of the engine within gear case-5' by the bearings 62- and driven by gear 63 meshing with gear 24. 1 The invention allows the magnetounit to be most conveniently disposed with respect to the engine application and desired control means. The driven shaft and timing gear are carried together directly by a rigid support instead of by the movable magneto housing thus eliminating possible chances of gear misalignment, wear and excessive-gear noise. .Thenominal effort required. to turn the magneto housing makes various types-of manual and automatic control means, not shown, feasible and practicable in outboard motors and the like.

Various embodiments of the invention maybe employed within the. scope of the following .Iclaim:

1. In an internal-combustionengine, a magneto unit for said engine having a housing and; a

rotor Shaft nominally. rotatably' supported within the'housing, means rotatably carried .and driven by said engine having connection at one endwith a corresponding end of said rotor shaft and supporting by said connection the entire weight of said unit, and selectively adjustable means securing-the housing of said unit against rotation with the rotor shaft thereof.

-2. In an engine of the class described, an

integral magneto and timer unit for the ignition of said engine including a stator housing and a rotor shaft rotatably carried'bythe housingja shaft rotatably carried and driven by said engine in predetermined timed relation to the operation of the engine, means connecting corresponding ends of said shafts in alignment,- the housingof said unit being rotatably supported on the rotor shaft thereof by said engine shaft, and abutment means adjustably securing said housing against rotation on and with the rotor shaft supporting the same and in a predetermined position .and corresponding timed relation to the ignition requirements of the engine.

3. In an engine of the class described including a shaft adapted to be rotated by and in timed relation with the operation of the engine, an integral magneto and timer unit therefor having a housing and a rotor shaft, the latter supported by said engine shaft and rotatably supporting the housing and control means connectedto-said housing to move the same on said rotor shaft for the selective adjustment of the relative positions of said housing and engine.

4. An engine including in combination, an electrical ignition system, an operating shaft rotated by and in timed relation with the operation of the engine, and a timed electrical impulse generator connected to said system operatively mounted and supported on said shaft and adjustably disposed with respect to said shaft whereby the timing thereof may be advanced or retarded.

5. In an engine for outboard motors and the like, an integral magneto and timing unit including a housing and a rotor shaft, means carried by said engine rotatably supporting said shaft, gear means drivingly connecting said engine and said shaft in timed relation, and amanually operable lever carried by said engine con-' nected to said housing and disposed to turn selectively the latter upon said shaft irrespective of the rotation thereof whereby the timed relation of said engine and unit is manually adjustable.

6. In an engine for outboard motors and the shaft; gear meansdrivingly connecting said am gine and said shaft in timed relation, a manually operable lever carried by said engine connected to said housing and disposed to turn selectiveh the latter upon said shaft irrespective ofv the rotation thereof whereby the timed relation of said engine and unit is manually adjustable, and spring means disposed to turn said housing in-the opposite direction. ,1 I

'7. In an outboard motor, an integral magneto and timing unit including a housing and a rotor shaft, bearings carried by the motor rotatably supporting said shaft, gear means drivinglyconmeeting. the motor and said shaft in timed relation, a steering handle for said motor including a manually operable lever carried by the motor connected to said housing and disposed to turn selectively the latter in one direction upon said shaft irrespective of the rotation thereof where,- bythe speed of the motor is manually adjustable, and spring means disposed to turn said housing and move said lever in the opposite direction.

- 8. In anoutboard motor, an integral magneto and timing unit including a housing and a rotor shaft, bearings carried by the motor rotatably supporting, said shaft, gear means drivingly connecting the motor and said shaft in timedrelation, a steering handle for said motor including a manually operable lever carried by the motor connected to said housing and disposed to turn selectively the latter in one direction upon said shaft irrespective of the rotation thereofwhereby the speed of the motor is manually adjustable,

connected to said housing and disposed toj turn selectively thelatter in one direction uponsaid shaft irrespective of the rotation thereof whereby the speed of the motor is manually adjustable-spring means disposed to turn said housing and move said lever in the oppositedirection, and selectively operable means carried by :said handle disposed to secure said lever and said housing against rotation in said last named direction and adapted to automatically release the same upon movement in said first named direction.

10. In an internal-combustion engine including a carburetor, a magneto unit for said engine having a housing and a rotor shaft nominally rotatably supported within the housing, means rotatably driven by said engine carrying a corresponding end of said rotor shaft and supporting the entire weight of said unit, selectively adjustable means securing the housing of said unit against rotation with the rotor shaft thereof, and cam means connecting said housing and said carburetor and providing for the coordinated adjustment of the latter with respect to said magneto unit.

11. In an engine of the class described including at least one carburetor, a conventional integral magneto and timer unit for the ignition of said engine including a stator housing and a rotor shaft rotatably carried by the housing, a shaft rotatably carried and driven by said engine in predetermined timed relation to the operation'of the engine, means connecting corresponding ends of said shafts in alignment, the housing of said unit being rotatably supported on the rotor shaft thereof by said engine shaft, abutment means adjustably securing said housing against rotation on and with the rotor shaft supporting the same and in a predetermined position and corresponding timed relation to the ignition requirements of the engine, and cam means connecting said housing and said carburetor and providing for the coordinated adjustment of the latter with respect to said magneto unit to control the speed of said engine. I

12. In an engine of the class described includinga vertically disposed shaft adapted to be rotated by and in timed relation with the operation of the engine, an integral magneto and ignition timer unit therefor having a housing and a rotor mounted on said shaft, the latter being supported vertically by said engine and rotatably supporting the housing, and a control rod connected to said housing to move and secure the same on said rotor shaft for the selective adjustment of the ignition timing.

' 13. In an engine for outboard motors and the like, an integral magneto and timing unit including a housing and a rotor shaft, means carried by said engine rotatably supporting said shaft independently of said housin gear means drivingly connecting said engine and said shaft in timed relation, a steering handle, and a manually operable lever carried by said handle connected to said housing and disposed to turn selectively the latter upon said shaft irrespective of the rotation thereof whereby the speed ofthe motor is manually adjustable.

14. In an outboard motor unit supported pivotally on a vertical'axis and including a tiller extending forwardly thereoffor eflectin' steering movement of the unit, an internal combustion engine having a housing andincluding a shaft supported by said housing for rotation in fixed timed relation with the operation of the engine, a magneto unit for said engine including'a rotor shaft driven by said engine shaft, said unit being supported for relative rotation independently of therotation of said rotor shaft to allowthe selective adjustment of the operation of-said' magneto unit, springmeans biasing said magneto unit rotationally in one direction on the axis of the 8 rotor shaft thereof, a handle at the forward end of said tiller for grasping and including a lever associated therewith, and a control linkage connecting'said lever and said magneto unit foreffecting the rotation of said magneto unit in the other direction and a correspondin adjustment thereof by grasping of said handle by an operator.

15. In an outboard motor unit supported for pivotal movement on a vertical axis and including a tiller for effecting the steering movement of the unit on said axis, said tiller including a handle at the end thereof and a lever associated with said handle so as to be actuated by grasping of said handle by an operator, an internal com,- bustion engine having a housing and including a shaft supported by said housing for rotation in fixed timed relation with the operation of the engine, a magneto unit for said engine having a rotor shaft driven by said engine shaft in a given direction and including bearin means supporting the magneto unit for rotation on-the axis of said rotor shaft and independently of the rotation thereof for the advance and retard adjustment of the unit, spring means biasing said magneto unit rotationally in said given direction to a: position of full retard, a control linkage connecting said leverand said magneto unitfor advancin the adjustment, of the latter by rotation thereof oppositely of said given, direction and against said spring means by actuation of said lever, and releasable catch means disposed to be moved into selective engagement with said lever to secure the latter and said magneto unit in the selected position of adjustment and to release said lever to allow rotation of said magneto unit by said spring means inpsaid given direction and the return thereof to said position of full retard.

ELMER C. KIEKHAEFER,

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number- Name Date 1,611,054 Mayoral I Dec. 14, 1926 1,683,893 Irgens Sept. 11,1928 1,843,272 Evinrude, Feb. 2,;1932

. 2,087,669 Johnson et al July 20, 1937 2,148,071 Irgens Feb. 21, 1939 2,256,948 Lloydet a1, Sept. 23, 1941 2,412,195 Arden Dec. 10, 1946