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Патент USA US2110321

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March s, 1938.
w. 1%. BORGERD 'Er ALv
I 2,110,321
MAGNETO
Origihal Filed Sept. 14, 1936
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INVENTORS'
ILL/4M [3000500
W111
March 8,1938.
w. F. BORGE‘RD Er AL
‘2,110,321
MAGNETO
Original Filed Sept. 14,, 1936
s Sheets-‘Sheet 2
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March 8,, 1938.
w. F; BORGERD ET AL
2,110,321‘
MAGNETO
Original Filed Sept. 14, 1936
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INVENTORS
ILL/4M [Baker/FD
ILL/AM QBn-lmm/v 44/0
awvcm A #40410”
2,110,321
Patented Mar. 8, 1938
UNITED ' STATES
PATENT OFFICE
2,110,321
MAGNETO
William F. Bergen! and William Otto Bechman,
Chicago, Ill., and Kenneth A. Harmon, Long
meadow, Mass, assignors to Wico Electric Com
pany, West Spring?eld, Mass, a. corporation of
Massachusetts
Application September 14, 1936, Serial No. 100,706
Renewed October 22, 1937
11 Claims. (Cl. 123-149)
showing certain parts of the impulse mechanism
' This invention relates to improvements in
in different relative positions;
magnetos.
_
. The invention has for an object the provision
in a magneto of a housing, having a' mounting
?ange for direct connection to the crankcase of
the engine which the magnetic is to serve, and a
rotor shaft which is mounted in the housing and
extends through the flange into the crankcase
for connection to an engine-driven member, such
as the cam shaft or a gear thereon, together
10
with provisions in the housing of lubricant-con
ducting passages for supplying lubricant from
the engine crankcase to all parts of the magneto
which require lubrication.
.
Figs. 5 and 6 are cross-sectional views taken
on the lines 5-5 and 6—-6, respectively, of Fig.
l; and
Fig. '7 is a fragmentary View taken from the
right-hand end of Fig. 1 and showing the timer,—
the cover for the timer casing having been re
moved.
.
Referring to these drawings, the magneto in
10
cludes a hollow casing or housing I0 (Fig. 1)
which in this case is a die casting of non-mag
netic metal. This casing has aligned cylindri
cal openings H and I2 leading from opposite
According to another object of the invention, ' ends into an interior chamber l3 in which a mag
the rotor shaft is rotatably supported solely by
‘axially-spaced bearings, preferably of the anti
friction type, one such bearing being located ad
jacent the mounting ?ange and another adja
cent the rotor and all being located on the same
20 side of the rotor and in such position that they
communicate with the crankcase and are lubri
cated automatically therefrom, sealing means be
ingprovided between the rotor and the nearest
, bearing to keep the lubricant from the rotor and
other parts of the magneto.
According to another object of the invention,
the rotor shaft, rotatably supported and lubri
cated as above set forth, extends from the mount
ing ?ange on the inner side of said housing to a
30 timer case on the outer side of the housing and
that part of the shaft which projects beyond the
rotor into the timer case serves to actuate the
breaker point mechanism.
According to another object of the invention,
35 the rotor shaft which extends beyond the mount
ing ?ange into the crankcase, bears a gear for
connection to an, engine driven gear in the
crankcase and between the gear and mounting
?ange an impulse driving mechanism is located
40 in position to be lubricated from the crankcase.
vOther objects will appear from the following
description and will be pointed out in the ap
pended claims.
'
' The invention will be disclosed with reference
45 to the accompanying drawings, in which:
Fig. l is a sectional elevational view of a mag
neto embodying the invention;
Fig. 21s a cross-sectional view taken on the
50
line 2--2 of Fig. 1 and illustrative of the impulse
mechanism;
'
'
'
‘Fig. 3 is a fragmentary exterior elevational view
showing the stationary abutment for the im
pulse mechanism; ',
55
'
4 is a view taken similarly to Fig. 2 but
netic rotor and the cooperating stator are housed.
The stator includes pole pieces M made up
of soft iron laminations which are embedded one
in each of two opposite side walls of the .chamber
l3 (Fig. 6) during the die casting operation.
These pole pieces at their upper ends are inter
connected by a core l5 madeup of soft iron
laminations and carrying the primary and sec
ondary coils l6 and I1, respectively. The ends
of core I5 are secured in place by clips l8 and
screws l9, as indicated by dotted lines in Fig. l.
The otherwise open upper end of chamber I3
is closed by a cap 20 (Figs. 4 and 6) of molded
insulating material, secured by screws 2| to cas
ing I0. This cap contains a metallic socket 22
(Figs. 1 and 4) to receive the spark plug wire
and is connected by a spring 23 (Fig. 1) to the
high tension terminal 24, which is one terminal
of the secondary coil H. The other terminal of
this coil, together with one terminal of coil I6,
is grounded by a wire 26 to one of the screws
IS. A wire 25 leads from the other terminal
of coil ii to the timer, as will later appear.
The magnetic‘ rotor revolves in the space be
tween the lower ends of pole pieces I‘ (Fig. 6)
and is ?xed to a shaft 21 (Fig. l) entirely sup—
ported, as will later appear, from bearings
mounted in the passage II. The rotor consists
of a pair of bar magnets 28 (Fig. 6) mounted in
parallel relation, one on each side of the axis
30
35
40
45
of the shaft 2‘I,—-the latter being recessed to re
ceive the central portions of the magnets. The
ends of these magnets of one polarity engage
in‘ recesses in a laminated pole shoe 29, and
the ends of opposite polarity engage in similar 50
recesses in a similar pole shoe 29. The described
assembly of magnets and pole shoes is held be
tween two circular end plates 30 (see also Fig. 1) _
of non-magnetic metal, suitably clamped to
gether as by rivets 3| and 32.
2
2,110,321
The timing mechanism is mounted on the cir
cular wall 33 of a cup-shaped casing, the cylindri
cal wall 34 of which ?ts in the passage l2 and is
held in place by a screw 35. A cover 36, secured
the opposite pole piece so that a reversal of ?ux
in the magnetic circuit occurs, when the breaker
points open. The described arrangement is not
novel and is not in any way an important fea
by screws 31 to casing l0, closes the outer end
ture of the invention. Other arrangements may
of passage l2 and completes an enclosure for
the timer. The outer end of shaft 21 projects
through a hole in wall 33 into the timer casing
and such end, of itself, forms a cam for operat
equally well be used.
10 ing the breaker points 39 and 40,-being cut
away, as at 38, to allow these points to close
and the uncut peripheral portion holding the
points open. The point 40 is adjustably secured
and electrically grounded to the wall 33 of the
15 timer case. The point 39 is mounted on a rocker
arm 4|, made of insulating material and pivoted
at a point intermediate its ends on a stud 42
secured to wall 33. One end of this arm 4| rides
on the cam end of shaft 21. A spring 43 serves
20 to hold the last named end of arm 4| against the
cam end of shaft 21 and also serves to electrically
connect point 39 to a terminal 44. The described
wire 25 enters the timer case through a hole
45 ‘and is secured to terminal 44. A condenser,
indicated at 46 in Fig. l, is housed in a block“
of molded insulating material. I This block is se
cured by screws 46 to wall 33 of the timer case
and has an extension which carries the terminal
44. The terminals ‘of the condenser are ‘not
30 shown herein but it will be understood that they
_
l
The magneto described is given as an illustra~
tive example of one of many suitable types with
which the invention may be used;
The inven—
tion is largely independent of the type of mag 10
neto employed and the details, above described,
are not to be taken as setting up limitations.
The invention is primarily concerned with the
mounting of the magneto and its rotor shaft 21
and with the lubrication of the moving parts.
The shaft 21 is supported by a pair of axially
spaced anti-friction bearings, such as the ball
bearings shown in Fig. 1. These bearings, which
constitute the sole support for the shaft, are
contained within a cylindrical sleeve 52 located in 20
the passage H, above described. ,lntegrai with
this sleeve is a mounting ?ange 53, adapted to be
suitably secured, as by‘ the cap screws 54, to a
portion of the crankcase c of the engine which
the magneto is intended to serve. The, ?ange 53 25
has a ?nished cylindrical portion-55m, ?t into
thecylindrical opening 0 of the crankcase as a
pilot and de?nitely locate and center the shaft
2‘! with respect to the gear g of-the engine,which
gear is located withinthe crankcase and serves 30
are connected in the usual and known manner,
to drive shaft.2'|.
one to the ground and one to terminal 44.
between the ?ange, 53 and the mating ?ange of
the crankcase. " The ?ange 53 and sleeve 52 .in
this case are made of castiron and are secured
to casing ID by cap screws 53' (Figs. 1 and 4).
They are, of course, virtually a part of easing
The
timer mechanism operates to keep the circuit of
the primary coil 16 open for the greater part
35 of each revolution of the magnetic rotor, where
by ?ux can readily build up in the described mag
netic circuit. The surface 38 of shaft 21, once
during each revolution, allows the breaker points
to close momentarily and then to open again.
40 The points close just before the rotor breaks
the magnetic circuit described and open at the
time such break occurs.
The timer case has an opening 50 in its wall
33, enabling communication with the bottomof
chamber l3 and from the bottom of this cham
ber a passage 5| extends downwardly and out
wardly to the atmosphere. Passage 5| serves to
vent the interior of the magneto. It also-serves
as a drain for the removal of any water and oil
50 that may reach the chamber l3 or timer case.
While provision is made for excluding oil from
the chamber l3 and timer case and none ordi
narily should reach these parts, the drain serves
as insurance against trouble from oil should
leakage occur from any cause.
The rotor, when turned a little more than 90
degrees from the illustrated position, will es-~
tablish a magnetic circuit from the magnets 28
through pole shoes 29, pole pieces l4, and core
IS in one direction.
When moved a little more
than 2'70 degrees from the illustrated position,
the rotor will be positioned to break this circuit
and it is this magnetic break that is utilized to
produce the spark current. The break which
65 occurs after the rotor has moved 90 degrees from
the illustrated position, is not utilized for the
production of a spark in this case. Just prior to
this ?rst-named magnetic break, the breaker
points 39|and 40 engage and close the primary
70 circuit. The ?ux established in core I4- is thus
held against substantial change while the rotor
moves into position to create an effective gap
between the trailing end of each shoe 29 and the
adjacent end of its pole pieces I 4. At this time,
75 the leading end of each-pole shoe has reached
Agasket 56 seals the joint
l0, since theyare?xed thereto. Their construc
tion as a separate piece is not therefore a neces
sity.
.
,
,
The ball bearings are of usualform- Their‘ 40
outer and inner races are marked 51 and 58, re
spectively, and the intervening series of balls 59.
The inner races 58 are spaced apart by a sleeve
60 on shaft 21 and the right-hand innergrace .
abuts a shoulder 6| on the shaft. Keyed to
shaft 21 is a hub 62, located to the left of the
left-hand inner race. The left-handor inner
end of shaft 21, which extends into’ the crank
case, is threaded to receive a nut 63 and between
this nut and hub 62 are a washer 64 and a sleeve 50
55: This nut, through the washer, clamps to-,
gether ‘the sleeve 65, hub 62, both inner races
58 and the intervening spacer sleeve 60. The
outer races 51 are held in place by split retainer .
rings 66. The sleeve 65 serves to support a gear 55
61 and is slightly longer than the width of the
gear so that the latter can turn freely relatively
to shaft 21. Gear 61 is driven from gear g and
in turn drives the hub 62 and, shaft 21 through
an'impulse mechanism.
60
The impulse driving mechanism may be of
any suitable form. In the particular form illus
trated, the driving member,--the gear 61,-is
provided with an annular recess to receive the
spiral drive spring 68 (Figs. 1 and 5) and an
annular ?ange. 69 on the hub '62, which consti-i
tutes thevdriven member. The ends of the spring
68 are connected, as shown in Fig. 5, to the mem
bers 61 and 69. The member 62 has a ?ange 10
(Fig. 2) . provided with a shoulder ‘H, against 70
which a pin 12 ?xed to the gear 61 is normally
held engaged by the spring 68. The ?ange 62 has
pivoted thereto at 13 a member which partially.
surrounds hub 62, and one end of which forms
a latch arm :74 adapted, when shaft 21 is rotat 75
2,110,321
20
25
30
35
40
such oil is conducted into the sleeve 52 to lubri
cate both bearings. Excess lubricant drains back
into the crankcase through a hole 8|, extending
45
3
ing very slowly to engage a stationary abutment engine driven'?gear g to secure the proper timing
in the form of a stud 15 (Figs. 3 and 4) fixed to ' of ignition for the engine) the problem of lubri
?ange 53, and to thereby temporarily stop the cating the magneto is solved once and for all.
rotation of hub 62. The longer arm ‘I6 of this The bearings are partitioned off from the rotor
member constitutes a weight adapted, at higher by the sealing device 82 and they are located
speeds of rotation of shaft 21, to swing outwardly near the mounting ?ange where they may at all
by the actionof centrifugal force and move the times communicate with the crankcase and re
ceive lubricant therefrom. The bearings are
latch arm 14 inwardly so that it cannot engage
abutment 15.- Stops 11 and 18 on arms ‘I4 and virtually put into the crankcase by the special
15, respectively, are adapted by abutment with mounting described. And there are no other
parts of the magneto which require lubricationthe periphery of hub 62 to limit inward and out
the timer cam being a ?xed part of the rotor
ward movement of the latch arm and the out
ward and inward movement of the weight arm, shaft and requiring no separate bearing. Thus,
respectively. The free end 19 of the weight arm the-user of the engine need give no attention to
is adapted to be engaged and moved by the pin the magneto, so far as lubrication is concerned
‘I2 to release the latch arm 14 from abutment 15. and, so long as he supplies oil to the engine, the
Thus, after latch arm 14 has engaged abutment magneto parts will be properly lubricated. This
‘I5 and arrested the hub 62 and shaft 21, the gear arrangement is of great practical importance
because it affords excellent assurance that the
81 and its pin 12 continue to move in the illus
trated direction, winding up spring 68, and the magneto parts will be properly lubricated‘with
pin eventually reaches the position shown in Fig. out requiring separate attention. An engine op
4, wherein it has engaged the end 19 of weight erator will rarely neglect to keep the crankcase
arm 16. Continued movement of pin 12 will of his engine supplied with the proper amount of
move arms 16 and ‘I4 and release the latter from oil but he might easily neglect to oil the magneto.
abutment 15, whereupon the spring 68 will draw Thus, the present arrangement guards against
the hub 52 and shaft 21 suddenly forward until this possible neglect of duty by the operator and
insures that the magneto will be properly lubri
the shoulder ‘H on the hub again abuts pin 12.
cated to give the intended long and satisfactory
. The lubrication of all moving parts of the mag
.
neto is accomplished entirely by oil received from service.
It should also be noted that the magneto bear
the crankcase c. The oil splash therein lubri
ings are eifectively protected from dust and dirt
cates the driving gears and all parts of the im
pulse driving mechanism and in addition the two just as much as the engine bearings in the crank
sets of ball bearings which form the only ones case are. It »is necessary to ventilate the mag
used for supporting the rotor shaft 21. A hole neto in some way and the ventilation provisions
80 leads from the outer and uppermost part of offer a possible source for dust and dirt to reach
the bearings of the ordinary magneto. But here
sleeve 52, at its intersection with ?ange 53, in
wardly and downwardly through the sleeve into the magneto bearings are separated from the
the interior thereof at a'location between the two magneto structure and sealed off by the means
82 from that part of the magneto housing that
bearings. This hole receives oil from the crank
case by splash, or in any other suitable way, and is ventilated.
through the sleeve from the lowest part or its
interior and leading downwardly into the interior
of ?ange 55, whence it can flow into the crank
case. A suitable sealing means is provided to
restrain oil which passes the right-hand or outer
bearing from reaching the chamber l3. In this
10
15
20
25
30
35
40
. The ventilation provision-the hole 5I—is of
novel form and thought to be important. The
hole is made of relatively great length, and pref
erably inclined to the horizontal, to secure a
leisurely entrance of - air as distinguished from
the more forcible blowing in of air which may
occur with the usual forms of ventilation holes,
457
where the length of the hole is seldom greater
and often less than the diameter thereof. A cur
_ face thereof and an annular ring 84 of metal,
rent of air passing beneath the magneto hous 50
ing cannot readily enter into the magneto under
any appreciable pressure and thus dust and dirt
being held in place by crimping the open end
of the cup inwardly upon the ring 84. The cup
'83 tightly fits in the inner end of passage I l and.
the disk 82 closely ?ts shaft 21. A space is left
between this sealing means and the adjacent
bearing and from this space a passage 86, formed
by an axial groove in the lower peripheral part
60 of sleeve 52, leads to the passage 8|, whereby to
will naturally enter the hole 51 but much of it
will tend to cling to the wall of the hole because 55
of the lack of pressure in the entering air and
such dust and dirt as does enter the housing will
not be forced against the magneto parts,—such
for example as the parts of the timer,—but will
be gently deposited in the housing in out of the 60
50 case, the sealing means comprises a rawhide disk
82 secured in‘a metal cup 83 between the circular
are not forced or blown in.
Some dust and dirt
conduct oil passing through the right-hand bear
way locations, where it will do no harm. .
ing back to the crankcase.
The operation of the magneto is the usual one
and will sufficiently appear from the foregoing
magneto structure which are calculated to pro
description.
The invention is characterized, among other
things, by a direct mounting of the magneto
housing on the crankcase, without intervening
brackets or mounting bases, and by a mounting
70 of the rotor in the housing in such a manner
that all of the rotor bearings are placed in com
munication with the crankcase to be automati
cally lubricated therefrom. By simply bolting
the mounting ?ange 53 to the crankcase (after
75 the gear 61 has been properly meshed with the
The invention thus affords improvements in
tect the moving parts of the magneto against
damage from lack of lubrication and from dust
and dirt. The bearing arrangement and the
mounting provisions have been incorporated in
a simple and practically fool-proof structure ca
pable of manufacture at low cost and yet ex
ceedingly effective and calculated to give a long
useful life without requiring any attention on the
part of the operator.
'
What we claim is:
1. The combination with the crankcase of an
engine and an engine-driven member rotatable
4
2,110,321
therein, said crankcasevhaving an opening ad
jacent said member, of a magneto including a
housing, a rotor and a stator mounted therein
and a shaft to which said rotor is ?xed, said
housing having a ?ange secured to said crank
case and closing said opening, said shaft extend
ing out of the housing through said ?ange and
into the crankcase, a driving connection between
said shaft and member, and bearing means for
10 rotatably vsupporting said rotor shaft and con
stituting the sole support for said shaft, said
bearing means located in said housing betweenv
the rotor and said ?ange, said housing having
passages leading from the crankcase side of said
15 ?ange to said bearing means and from the
latter back to said side of said ?ange for the
circulation of lubricant from the crankcase to
said means.
2. The combination with the crankcase of an
20 engine and an engine driven gear rotatable there
in, said crankcase having an opening adjacent
said gear, of a magneto including a housing, a
rotor and a stator mounted therein, and a shaft
to which said rotor is ?xed, said housing having
25 a ?ange secured to the crankcase and closing said
opening, said shaft extending out of the hous
ing through said ?ange and projecting beyond
the ?ange into said crankcase, a gear on the
projecting end of said shaft for driving engage
30 ment with the ?rst-named gear, impulse driv
ing having a recess therein coaxial with said
shaft and extending inwardly from the crank
case side of said ?ange to the rotorh'axially spaced
bearings one near said ?ange and one near the
rotor mounted in said recess and rotatably sup
porting said shaft and constituting the sole bear
ing means therefor, sealing means located between
the rotor and the adjacent bearing to restrain
the passage of lubricant from said recess to the
rotor, said housing having a lubricant feed pas 10
sage extending from the crankcase side of said
?ange in downwardly sloping relation to said re
cess at a point intermediate said bearings, said
housing also having a lubricant drain passage
extending from said recess-at a point intermediate
said bearings in downwardly sloping relation to
and opening through the crankcase side of said
?ange.
5. The combination with the crankcase of an
engine and an engine-driven member rotatable 20
therein, said crankcase having an opening ad
jacent said member, of a magneto including a
housing, arotor and a stator mounted therein
and a horizontal shaft to which said rotor is ?xed,
said housing having a ?ange disposed at right
angles to the axis of said shaft and secured to
said crankcase and closing said opening, said
shaft extending out of the housing through said
?ange and into the crankcase, a driving connec
tion between said shaft and member, said hous 30
ing mechanism for actuating said shaft from said
gear and located between the gear and ?ange in
position to be lubricated from the splash in the
crankcase, bearing means in said housing for ro
35 tatably supporting said shaft and constituting
the sole support therefor, said housing having
passages leading from the crankcase side of said
?ange to the bearing means for supplying lu
bearing means therefor, sealing means located
between the rotor and the adjacent bearing to
bricant from the crankcase thereto and other pas
40 sages leading from the bearing means to said
cess to the rotor, said housing having a lubricant 40
shaft and extending inwardly from the crank
case side of said ?ange to the rotor, axially spaced
bearings one near said ?ange and one near the
rotor mounted in said recess and rotatably sup
porting said shaft and constituting the sole
restrain the passage of lubricant from said re
side of said ?ange for returning lubricant to the
crankcase.
feed passage extending from the crankcase ‘side
of said ?ange in downwardly sloping relation to
3. The combination with the crankcase of an
engine and an engine-driven member rotatable
said recess at a point intermediate said bearings,
said housing also having a lubricant drain pas
sage extending from said recess at a point inter-_ 45
45 therein, said crankcase having an opening adja
cent said member, of a magneto including a
housing, a rotor and a stator mounted therein,
breaker point mechanism including an actuating
cam, and a shaft to which said rotor and cam
50
ing having a recess therein coaxial with said
are ?xed, said housing having a ?ange secured
to said crankcase and closing said opening, said
shaft extending out of the housing through said
?ange and into the crankcase, a driving connec
mediate said hearings in downwardly sloping
relation to and opening through the crankcase
side of said ?ange, said housing having a second
lubricant drain passage leading from the space
between the sealing means and the adjacent 60
bearing and opening through the crankcase side
of said ?ange.
'
>
6. In a magneto, a housing, a stator and a
tion between said shaft and member, and bear
ing means for rotatably supporting said rotor
55
shaft and constituting the sole support for said‘
shaft, said bearing means located in said hous
ing between the rotor and said ?ange, said hous
ing having passages leading from the crankcase
rotor mounted therein, a shaft ?xed to the rotor,
said housing having a recess coaxial with said 55
shaft and extending from one outer face in
wardly toward the rotor; sealing means closing
the inner end of said recess except for an open
ing through which the shaft passes, a mounting
60 side of said ?ange to said bearing means and from
?ange disposed at right angles to the axis of said
shaft and adapted to be secured to the crankcase
of an engine, said ?ange having an integral
sleeve ?tting into said recess and ?xed to said
the latter back to said side of said ?ange for
the circulation of lubricant from the crankcase
to said means.
4. The combination with the crankcase of an
engine and an engine-driven member rotatable
housing, said shaft extending through said sleeve
in spaced and coaxial relation and beyond the 65
therein, said crankcase having an opening adja
?ange, axially spaced bearings mounted in said
cent said member, of a magneto including a sleeve and forming the sole‘means for rotatably
housing, a rotor and a stator mounted therein supporting said shaft, said housing having lu
and a horizontal shaft to which said rotor is, bricant conducting passages extending from
?xed, said housing having a ?ange disposed at
70 right angles to the axis of said shaft and secured the ?ange to said bearings.
7. In a magneto, a housing, a stator and a ro
to said crankcase and closing said opening, said tor mounted therein, a shaft ?xed to the rotor,
shaft extending out of the housing through said said housing having a recess coaxial with said
65
?ange and ‘into the crankcase, a driving connec
76 tion between said shaft and member, said hous
shaft and extending from one outer face in
wardly toward the rotor, sealing means closing I
5
2,110,321
the inner end of said recess except for an open
ing through which the shaft passes, a mounting
?ange disposed at right angles to the axis of
said shaft and adapted to be secured to the
means.
crankcase of an engine, said shaft extending
through said recess in coaxial relation and be
yond said ?ange, bearings for said shaft all
mounted in said recess, said housing having on
one side of said sealing means lubricant conduct
engine and an engine-driven member rotatable
therein, said crankcase having an opening ad
jacent said member, of a magneto including a
housing, a rotor and a stator mounted therein
and a horizontal shaft to which said rotor is ?xed,
said housing havingv a ?ange disposed at right 10
angles to the axis of said shaft and secured to
ing passages extending from the ?ange to the
bearings and having on the other side a‘ rela
tively long and downwardly sloping ventilation
and drain passage connecting its interior to the
atmosphere.
15
of said ?ange to said bearing’means for the
supply of lubricant from the crankcase to said
8. The combination with the crankcase of an
engine and an engine-driven member rotatable
therein, said crankcase having an opening adja
' cent said member, of a magneto including a
housing, a rotor and a stator mounted therein
20 and a shaft to which said rotor is ?xed, said
' 10. The combination with the crankcase of an
said crankcase and closing said opening, said
shaft extending out of the housing through said
?ange and into the crankcase, a driving connec
tion'between said shaft and member, said hous 15
ing having a recess therein coaxial with said
shaft and extending inwardly from the crank
case side of said ?ange to the point of attach
ment to the rotor to said shaft, axially spaced
bearings one near said ?ange and one near said
housing having a ?ange secured to said crank
case and closing said opening, said shaft extend
ing out of the housing through said ?ange and
into the crankcase, a driving connection between
said shaft and member, and bearing means for
point mounted in said recess and rotatably sup
rotatably supporting said rotor shaft and consti
tuting the sole support for said shaft, said bear
to the rotor, said housing having a lubricant feed
passage extending from the crankcase side of
said ?ange in downwardly sloping relation to said
ing means located in said housing between said
?ange and the point of connection of the rotor
30 to said shaft, said housing having a passage lead
ing from the crankcase side of said ?ange to
said bearing means for the supply of lubricant
from the crankcase to said means.
9. The‘ combination with the crankcase of an
35 engine and an engine-driven member rotatable
therein, said crankcase having an opening adja
cent said member, of a magneto including a hous
ing, a rotor and a stator mounted therein, breaker
point mechanism including an actuating cam,
and a shaft to which said rotor and cam are
?xed, said housing having a ?ange secured to
said crankcase and closing said opening, said
shaft extending out of the housing through said
?ange and into the crankcase, ‘a driving con
nection between said shaft and member, and
bearing means for rotatably supporting said rotor
shaft and constituting the sole support for said
shaft, said bearing means located in said hous
ing between said ?ange and the point of connec
50 tion of the rotor to said shaft, said housing hav
ing a passage leading from the crankcase side
porting said shaft and constituting the sole bear
ing means therefor, sealing means located be
tween the rotor and the adjacent bearing to
restrain the passage of lubricant from said recess
recess at a point intermediate said bearings.
11. In a magneto, a housing, a stator and a ro
tor mounted therein, a shaft ?xed to the rotor,
said housing having a recess coaxial vwith said
shaft and extending from one outer face inward
ly toward the rotor, sealing means closing the
inner end of said recess except for an opening
through which the shaft passes, a mounting
?ange disposed at right angles to the axis of said
shaft and adapted to be secured to the crank
case of an engine, said ?ange having an integral
sleeve fitting into said recess and ?xed to said‘
housing, said shaft extending through said sleeve
in spaced and coaxial relation and beyond the
?ange, axially spaced bearings mounted in said
sleeve and forming the sole means for rotatably
supporting said shaft, said housing having a lu 45
bricant conducting passage extending from the
?ange to said bearings.
'
1
WILLIAM F. BORGERD.
WILLIAM o'rro BECHMAN.
KENNETH A. HARMON.
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