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Патент USA US2107417

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Feb. 8, 1938.
A. F. KAPTULLER
~ 2,107,417 -
CHANGE SPEED DRIVING MECHANISM
Filed Oct. 21, 1956
I
2 Sheets-Sheet‘ 1
W
,
Feb. 8, 1938.
A. F. KAPTULLER
2,107,417
CHANGE SPEED‘ DRIVING MECHANISM
Filed Oct. 21, 1936
2 Sheets-Sheet 2
Patented Feb. 8, 1938
2,107,417
UNlED STATES PATNT OFFIQE
2,107,417
CHANGE SPEED DRIVING MECHANISM
Alexander F. Kaptuller, Chicago, Ill.
Application October 21, 1936, Serial No. 106,717
10 Claims.
(Cl. 74-375)
My invention relates to driving mechanism and
particularly to a change speed driving mecha
nism for use in connection with an electric motor,
and it has for its object the provision of. a new
5 and improved form and arrangement of parts
making up a driving mechanism of unit form
capable of use to very great advantage for new
installations and also adapted to be substituted
advantageously in connection with old installa
10 tions of motors and driving mechanism with only
1
a minimum change of arrangement.
It is one of the objects of my invention to pro
vide an improved mechanism of this type of such
compact form as to enable it to be employed at
points where the available space is limited, and
so arranged that ample support is provided for
the moving parts so as to cut down vibration and
noise to a minimum. It is one of. the objects of
my invention to provide an improved construc-
tion of change speed driving mechanism of com
pact form with the driving pulley of the mecha
nism positioned closely adjacent to the end of
the motor in substantially the same location as
that usually occupied by the driving pulley of
25 an arrangement comprising a motor and its
drive means but not involving change speed
mechanism, the arrangement being such that a
change speed drive of my improved type can very
readily
be substituted in place of an old arrange
30
ment in which no change speed mechanism was
employed. It is another object of my invention
to provide an arrangement of this type involving
also a reverse speed mechanism having a co
operative relation with the remaining parts
3
whereby either forward or reverse driving may
be effected at any one of the plurality of speeds
of driving available.
It is another object of my invention to improve
4 O devices of. this type in sundry details herein
after pointed out. The preferred means by which
I have accomplished my several objects are illus
trated in the drawings and are hereinafter spe
ci?cally described.
That which I believe to be
45 new and desire to cover by Letters Patent is set
forth in the claims.
In the drawings,—
Fig. 1 is a central vertical sectional view
through the preferred form of my improved
50 mechanism in position on the end of a motor
partly broken away;
Fig. 2 is a vertical sectional view taken sub
stantially at line 2—-2 of Fig. 1;
Fig. 3 is a view of one of the clutch shifting
55 levers as seen from the left in Fig. 2; and
Fig. 4 is a vertical cross sectional view taken
at line 6—4 of Fig. 1.
Referring now to the several ?gures of the
drawings in which corresponding parts are indi
cated by the same reference characters, H] indi
cates an electric motor of any approved type
having a pinion l I mounted upon its armature
shaft l2. In the arrangement shown, frame bars
53 and M are secured on the end of the motor I0
at opposite sides of the armature shaft l2, being 10
connected at their outer ends with a vertically
positioned frame plate l5. Upon the outer face
of the plate I 5 I have mounted a housing member
it in the form of a shell which serves both as a
housing and as an extension of the framework 15
longitudinally of the axis of. the motor.
Within the framework comprising the plate l5
and the shell it, I have mounted a hollow shaft
ll, such shaft being mounted at its inner end
by means of a ball bearing l8 carried by the plate
l5 and being mounted at its outer end by means 20
of a ball bearing device is mounted in a ?ange
20 formed upon the outer end of the shell IS.
A second shaft 2! is located Within the hollow
shaft ll’, being supported at its inner end by
means of a ball bearing 22 carried by the hollow
shaft and being supported at its outer end by
means of a ball bearing 23 carried by a ring 24
comprising an extension of the end ?ange 20.
At the inner end of the hollow shaft I1, I have
provided a cylinder 25 which in the arrange 30
ment shown is formed integrally with the hol
low shaft, such cylinder being concentric with
the axis of the shaft so as to serve effectively as
a driving pulley whereby power may be delivered
from the motor through the medium of a belt 26. 35
Upon the inner end of the shaft 2! inside of the
hollow pulley 25, I have mounted a transverse
plate 2? which in the arrangement shown is
formed integrally with the shaft 2|. Upon the
inner face of the plate 27, I have mounted an 40
internal gear 28 of such form as to have effec
tive driving engagement with the pinion l I of the
motor H] for driving the shaft 2! at a reduced
rate by the power of the motor. In the arrange
ment shown, the gear 28 and pinion II are 45
located completely within the hollow pulley 25
so as to avoid any increase in the length of the
mechanism by reason of their use.
Upon the outer end of the shaft 2 l, I have rev
olubly mounted a clutch casing 29 which is con 50
nected by means of a plate clutch 30 with the
shaft 2|, the plate clutch so being of any ap
proved form by which the casing 29 may be ef
fectively connected with the shaft. Operating
2,107,417
2
means for the clutch of the usual form are pro
vided, such operating means comprising a drum
3| and a lever 32 by which the drum may be
forced toward the left for pressing the clutch
plates into cooperative relation for driving the
that the pinion 51 is held in mesh with the gear
54 when the pin 6| is in the uppermost one of
the openings 62, while the pinion 59 is held in
operative meshing engagement with the gear 54
when the pin BI is in the lowermost opening 62.
As will be readily understood, when the motor
casing 29 from the shaft 2|.
In the arrange
ment shown, the clutch lever 32 is mounted upon
a cap 33 which serves as a means for closing the
outer end of the shell l6.
7
Within the shell |9 alongside of the hollow shaft
10 |1, I have revolubly mounted a counter-shaft 34,
such counter-shaft in the arrangement shown be
ing supported by a ball bearing 35 mounted in
15
I9 is in operation so as to drive the pinion H,
the shaft 2| is driven by said pinion at a reduced
speed of rotation. With the clutch 32 closed so
as to connect the casing member 29 with the shaft 10
2 l , and with the pinion 51 in mesh with the gear.
54, the counter-shaft 34 is driven in the same
direction as the shaft 2| and at the same speed.
In the arrangement shown, the pinion 31 and the
the ?ange 29 and a ball bearing 36 mounted in
gearv 4B are of the same diameter so as to provide 15
the plate l5. This counter-shaft is provided with
for driving the hollow shaft I‘! in either direction
pinions 31, 38, 39 and 49 which are loosely mount
ed on the shaft, clutch mechanisms 4| and 42 be
ing provided for connecting any one of such pin
is being driven.
ions with the shaft as may be desired.
As is
at the same speed as that
at which the shaft 2| '
v
The relative sizes of the remain
ing pinions 38, 39 and 40 and their cooperating
gears 49, 53 and 5| are such that by the use of 20
a different set of cooperating parts the speed of
clearly shown in Fig. 2, each of the clutch mech
20 anisms 4| and 42 comprises a yoke 43 which is
rotation of the hollow shaft |1 may be varied con
swingingly mounted upon a rock shaft 44 having . siderably with respect to the speed of rotation of
a clutch lever 45 mounted on its outer end where
the shaft 2|.
1 By the arrangement as shown in my drawings 25
by the movable member of the clutch can'be
_
in
which the driving pulley is mounted directly
thrown into and out of clutching engagement
25
at the end of the motor, power being delivered to
with its cooperating parts. The lever 45 is nor
mally vheld in adjusted position by means of a , such driving pulley through the medium of a hol
springv pressed pin 46 carried by the wall of the low shaft along which change speed mechanism~
is arranged, a high degree of compactness is pro 30
shell l5 so as to engage any one of a plurality of
vided. In my improved arrangement as shown,
openings 41 in‘ the lever.
Upon the hollow shaft I1,‘ I have mounted gears the drive shaft 2| and the hollow shaft H are
48, 49, 55 and 5| which engage the pinions 31, both effectively supported so as to out down the
38, 39 and 49 respectively, said gears being rigid
noise and vibration to a minimum. By my ar
ly secured upon the hollow shaft H by means of rangement, the over—all length of the driving 35
a key 52 as is clearly shown in Fig. 1. As willbe mechanism is made very small. By reason of the
readily‘ understood, by a ‘selection of the pinion location of the driving pulley closely adjacent to
the end of the motor, I am enabled very readily
31, 38, 39 or 49 to be connected'with the counter
to substitute my improved mechanism in place
oflan installation not provided with change speed 40
shaft 34, thespeed of rotation of the hollow shaft
61 as driven by the counter-shaft 34 can be reg
. mechanism, the substitution requiring in many
40
ulated.
-
'
-
Operative driving connections are provided
cases nothing other than an adjustment of the
between the clutch housing 29 and the counter
length of the driving belt.
shaft 34 by means of a gear 53 mounted upon the
clutch housing and a gear 54 mounted upon the
While I prefer to employ the form and ar
rangement of parts as shown in my drawings 45
and as above described, it is to be understood
that my invention is not limited to such form and
arrangement except as it may be so limited by
the claims, it being understood that changes
counter-shaft, such gears in turn being connected
45 by auxiliary gearing as best shown in Fig. 4. This
connecting gearing comprises a ring 55 which is
revolubly mounted about a hub portion of the
ring '24, the ring 55 being held in position with
respect to the ring portion 24 and the ?ange 29
by means of a keeper plate 56 engaging the up
per ‘portion of said ring 55 as is clearly shown in
Fig. 4. Upon the ring 55, I have mounted a pin
ion 51 at one side and two intermeshing pinions
59 and 59 at the opposite side, the pinions 51 and
55 58 being in meshing engagement with the gear
53. At one side of the ring 55, Ihave provided an
arm 99 which extends outwardly through the wall
‘ of the housing member I6, being provided at its
outer end with a spring pressed pin5| adapted
60 to engage any one of a plurality of openings 52 in
'
might well be made from the arrangement shown 50
without departing from my invention.
I claim:—
1. In a change speed driving mechanism for
a motor, the combination of a frame member,
a hollow shaft rotatably mounted on said frame
member, means for mounting said frame mem
ber in position for supporting said hollow shaft
in parallel relation to the axis of the motor ec
centrically thereof, a second shaft extending
through said hollow shaft and revolubly sup 60
ported at its outer end by said frame member
beyond the end of the hollow shaft, a cylinder
said wall’ so‘ as to hold the ring 55 from rotary
rigidly mounted on said hollow shaft concen
movement. The ‘arrangement is such that when
the parts are in the position as shown in Fig. 4,
the pinions 51 and 59 are both out of mesh with
trically thereof at the end portion adjacent to
the motor serving as a driving pulley for said
hollow shaft, gear means located largely inside
of said cylinder for connecting said second shaft
clockwise directionin Fig. 4 from the position as with the motor for driving the shaft, a third
shown, the pinion 51 is brought into mesh with shaft revolubly mounted on said frame member
the gear 54 so as to drive the counter-shaft 34 in alongside of said hollow shaft, driving connec
one direction from the shaft 2|. 'Upon rotary
between said second and third shafts, and
70 movement of the ring in the opposite direction, 'tions
change speed driving connections between said
the pinion 59 is brought into operative meshing hollow shaft'and said‘ third shaft.
2..In- a'change speed driving mechanism for
engagement with ‘the gear 54 for driving the
counter-shaft in the opposite direction, by power a motor, the combination of a frame member,
from said shaft 2|. The arrangement is such
65 the gear 54.’ When the ring 55 is rotated in
75
“:2,107,417
a hollow shaft rotatably mounted on said frame
member, means for mounting said frame mem
ber in position for supporting said hollow shaft
in parallel relation to the axis of the motor ec
centrically thereof, a second shaft extending
through said hollow shaft and revolubly sup
ported at its outer end by said frame member
beyond the end of the hollow shaft, a cylinder
rigidly mounted on said hollow shaft concentri
10 cally thereof at the end portion adjacent to the
motor serving as a driving pulley for said hol
low shaft, an internal gear mounted on said sec
ond shaft largely inside of said cylinder adapted
by meshing engagement with the driving pinion
15 of the motor to rotate said second shaft, a third
shaft revolubly mounted on said frame mem
ber alongside of said hollow shaft, driving con
nections between said second and third shafts,
and change speed driving connections between
said hollow shaft and said third shaft.
3. In a change speed driving mechanism for
a motor, the combination of a frame member,
means for mounting said frame member rigidly
in position with respect to the motor at one end
25 of the motor, a hollow shaft rotatably mounted
on said frame member in parallel relation to the
axis of the motor, a second shaft extending
through said hollow shaft having a driving con
nection at one end with said motor and revo
30 lubly mounted at its opposite end in said frame
member beyond the outer end of the hollow
shaft, a third shaft revolubly mounted on said
frame member alongside of said hollow shaft,
driving connections between said second and
35 third shafts for driving the third shaft in either
direction from said second shaft, and change
speed driving connections between said hollow
shaft and said third shaft.
4. In a change speed driving mechanism for
a motor, the combination of a frame comprising
a plate and a housing member secured to the
plate and extending from one face thereof,
means for mounting said frame rigidly on said
motor at one end of the motor, a hollow shaft
45 extending through an opening in said plate and
through said housing and rotatably mounted at
its inner end in said plate and at its outer end in
said housing, a second shaft extending through
said hollow shaft having a driving connection
50 at one end with said motor and revolubly
mounted at its opposite end in said housing be
yond the outer end of the hollow shaft, a third
shaft extending through said housing alongside
of said hollow shaft and revolubly mounted at
55 both ends in said frame, driving connections be
tween said second and third shafts, and change
speed driving connections between said hollow
shaft and said third shaft.
5. In a change speed driving mechanism for
60 a motor, the combination of a frame comprising
a plate and a housing member secured to the
plate and extending from one face thereof,
means for mounting ‘said frame rigidly on said
motor at one end of the motor, a hollow shaft
65 extending through an opening in said plate and
through said housing and rotatably mounted at
its inner end in said plate and at its outer end in
said housing, a second shaft extending through
said hollow shaft having a driving connection
70 at one end with said motor and revolubly
mounted at its opposite end in said housing be
yond the outer end of the hollow shaft, a third
shaft extending through said housing alongside
of said hollow shaft and revolubly mounted at
75 its inner end on said plate and revolubly mount
-
3
ed at its outer end in said housing, driving con
nections between said second and third shafts,
and change speed driving connections between
said hollow shaft and said third shaft.
6. In a change speed driving mechanism, the
combination of a housing, a hollow shaft ex
tending through said housing and rotatably
mounted at both end portions therein, means for
mounting said housing rigidly on said motor at
one end of the motor so as to support said hollow 10
shaft in parallel relation to the axis of the mo
tor, a second shaft extending through said hol
low shaft having a driving connection at one
end with said motor and revolubly mounted at
its opposite end in said housing beyond the outer 15
end of the hollow shaft, a third shaft extending
through said housing alongside of said hollow
shaft and revolubly mounted at both ends in said
housing, driving connections between said sec
ond and third shafts, and change speed driving 20
connections between said hollow shaft and said
third shaft.
-
'7. In a change speed driving mechanism for
an electric motor, the combination of two frame
bars secured to the motor and extending at 25
opposite sides of the motor shaft, a frame plate
secured to said bars in transverse position oppo
site the end of the motor shaft, a frame mem
ber secured to said frame plate and extending
outwardly therefrom, a shaft rotatably mounted 30
on said framework and operatively connected
with the motor shaft so as to be driven there
by, a hollow shaft in concentric position on said
?rst named shaft and rotatably mounted on said
framework, a third shaft rotatably mounted on 35
said framework alongside of said hollow shaft,
driving connections between said ?rst named
shaft and said third shaft, and change speed
driving connections between said third shaft
and said hollow shaft.
40
8. In a change speed driving mechanism for an
electric motor, the combination of two frame bars
secured to the motor and extending at opposite
sides of the motor shaft, a frame plate secured to
said bars in transverse position opposite the end
45
of the motor shaft, a frame member in the form
of a housing secured to said frame plate and ex
tending outwardly therefrom and partially closed
at its outer end by a transversely positioned ?ange,
a shaft rotatably mounted at its outer end in said
?ange and operatively connected at its inner end 50
with the driving shaft of said motor so as to be
driven thereby, a hollow shaft in concentric posi
tion on said ?rst named shaft and rotatably
mounted at its end portions in said frame plate
55
and said ?ange respectively, a third shaft rotat
ably mounted between said frame plate and said
?ange alongside of said hollow shaft, driving con
nections between said first named shaft and said
third shaft, and change speed driving connections 60
between said third shaft and said hollow shaft.
9. In a change speed driving mechanism for an
electric motor, the combination of two frame bars
secured to the motor and extending at opposite
sides of the motor shaft, a frame plate secured 65
to said bars in transverse position opposite the
end of the motor shaft, a frame member in the
form of a, housing secured to said frame plate and
extending outwardly therefrom and partially
closed at its outer end by a transversely positioned 70
?ange, a shaft rotatably mounted at its outer end
in said flange and operatively connected at its
inner end with the driving shaft of said motor so
as to be driven thereby, a hollow shaft in con
centric position on said ?rst named shaft and 75
2,107,417
said
~ rotatably mounted at its end portions. in
a third
vframe plate and said ?ange respectively,
shaft rotatably mounted between said frame
plate and said ?ange alongside of said hollow
cured to said bars in transverse position opposite
7
shaft, a gear on the outer end of said third shaft
beyond said ?ange,
a second gear on said ?rst ,
; named shaft opposite said first named gear but
out of mesh therewith, a ring rotatably mounted
on the outer face of said ?ange about said ?rst
named shaft,'pinions rotatably mounted on said
_ ring in driving relationship to said second gear
and adapted upon rotary movement of said ring in
opposite directions to engage said first named gear
for driving it alternatively in opposite directions,
,,15 latch means on the outside of said housing for re
leasably holding said ring in adjusted position,
and change speed driving connections between
said third shaft and said hollow shaf .
10. A unit arrangement of change speed driv
ing mechanism for an electric motor, comprising
in combination two frame bars adapted-to be re
movably secured to a motor at opposite sides of,
the driving shaft of the motor, a frame plate se
the end of the motor shaft, a frame member se
cured to said frame plate and extending out
wardly therefrom, a hollow shaft rotatably
mounted at its opposite end portions on said
framework, a third shaft extending through said
hollow shaft and rotatably mounted at one end
portion in said hollow shaft and at its opposite
end portion in said framework beyond the outer
end of the hollow shaft, a hollow driving member 10
mounted concentrically on said hollow shaftabout
the outer end portion of the driving shaft of the
motor, a second driving member mounted con
centrically on said third shaft inside of said hollow
driving member, means for operatively connecting
' said second driving member with the driving shaft
of the motor, a fourth shaft revolubly mounted
151/
on said framework alongside of said hollow shaft,
driving connections between said third and fourth 20
shafts, and change speed driving connections be
tween said hollow shaft'and said fourth shaft. ’
ALEXANDER F. KAPTULLER.
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