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Патент USA US3039327

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June 19, 1962
3,039,31 7
H. R. WILSQN
DISCONNEICT MEANS FOR A PUMP DRIVE
2 Sheets-Sheet 1
Filed July 21, 1960
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June 19, 1962
H. R. WILSON
3,039,317
DISCONNECT MEANS FOR A PUMP DRIVE
Filed July 21, 1960
2 Sheets-Sheet 2
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United States Patent 0 "ice
3,h39,3l7
Patented June 19, 1962
2
1
3,039,317
DISCONNECT MEANS FOR A PUMP DRIVE
Harry R. Wilson, Libertyviile, Ill., assignor to The Frank
G. Hough Co., a corporation of Illinois
Filed July 21, 1960, Ser. No. 44,359
4 Claims. (Cl. 74-11)
This invention relates generally to power take-off de
vices for engines, and more speci?cally to an improved
also carries a second gear secured thereon between the
gear at the end of the shaft and the pump housing. A
pump idler gear is also carried in the pump drive housing
and is rotatively carried on a shaft intermediate the ends
thereof. The idler gear is prevented from any longi
tudinal movement relative to its shaft. That shaft is slid
ably mounted through and in the pump drive housing
with one end projecting outwardly from the housing and
has a certain looking lever arrangement connected there
power take-off arrangement on an engine for a pair of 10 to.
hydraulic pumps.
In the driving of auxiliary equipment from the engine
The second pump is also carried on the pump drive
housing and has its operating shaft extending therewithin
with a driving gear ‘keyed thereon. The driving gear for
the second pump is so disposed relative to the idler gear
and the second gear on the ?rst pump shaft that when
further, simple coupling or uncoupling means for one 15 the shaft for the idler gear is moved to its innermost posi
tion of the pump drive housing, the idler gear engages
of the devices is also desirable.
the second gear on the ?rst pump shaft and the pump
It is the object of the present invention to provide a
driving gear for the second pump. When the shaft for
certain power take~off arrangement for an internal com
the idler gear is moved outwardly of the pump drive
bustion engine wherein a pair of auxiliary devices are
20 housing, the idler gear is disengaged from the two de
driven from the engine.
scribed gears and the second pump is not operated. A
It is a ‘further object of the present invention to pro
curved plate having a slot therein is carried on the pump
vide in the aforementioned arrangement simple means
drive housing in cooperation with the lever means on the
for coupling or uncoupling one of the devices from the
idler gear shaft. The plate has a slot formed there
power take-0E arrangement on the engine.
through which is angled to the vaxis of the idler gear shaft
It is a further object of the present invention to pro
so that when the lever is moved to rotate the idler gear
vide a simple mounting arrangement for a pair of hy
shaft in one direction, the inclined sides of the slot will
draulic pumps on a single pump drive housing which in
cause the idler gear shaft to be moved outwardly of the
turn is carried on an engine, and whereby one of the
pump drive housing to disengage ‘any drive to the second
pumps may be selectively disengaged from the power
30 pump. When the lever is moved in the opposite direc
take-off means.
tion in the slot, the idler gear shaft is moved inwardly
A feature of the present invention is provision of a
of the pump drive housing to engage the idler gear with
certain simple reciprocating shaft arrangement for con
the described gears of the two pumps to cause the sec
meeting and disconnecting drive to one of the pumps.
ond pump to be operated.
Other objects and features of the present invention will
For a detailed description of the present invention, con
be apparent upon a perusal of the following speci?cation 35
of a motor vehicle, it is often desirable to drive two
auxiliary devices from a single power take-off point; and
‘and drawings of which:
'
FIGURE 1 is a side elevational view of an engine
carrying the pump driving means of the present inven
tinued reference is made to the drawings. The'engine
10 ‘which is shown merely by way of environment has ‘a
radiator 11 connected at the forward end thereof.
To
the engine 10‘, the pump drive housing 12 is secured.
FIGURE 2 is an enlarged cross-sectional view of the 40 The pump drive housing 12 comprises a forward section
tion;
12a and a rearward section 12b, the two sections being
pump driving means of FIGURE 1 and taken along the
secured together by a series of fasteners 13. The section
line 2~—2 of FIGURE 1;
12a is secured to the engine 10 over a suitable engine
FIGURE 3 is an enlarged partially cross-sectional view
of the curved plate and lever means shown in FIGURE 2 45 driven gear (not shown). That gear is in turn drivingly
connected to gear 14. Gear 14 is keyed to the shaft 15,
for selectively engaging or disengaging one of the hy
draulic pumps;
'
FIGURE 4 is an enlarged partially cross-sectional view
of the pump drive means shown in FIGURE 2 and taken
along the line 4—4 of ‘FIGURE 2; and
FIGURE 5 is an enlarged view of the lever and curved
plate means of FIGURE 1 for selectively engaging or
disengaging one of the pumps.
and shaft 15 is in turn connected to drive pump 16 as
the operating shaft thereof. Pump 16 is secured to sec
tion 12b of the pump drive housing 12 by ‘bolts 17 shown
in FIGURE 2. The pressure and suction lines 19 and
50 21} of the pump 16 are shown in FIGURE 1.
A gear
21, which is partially shown in dotted lines in FIGURE 2
and is positioned behind the gear 22 shown in FIGURE 4,
is keyed on the shaft 15. Thus it may be seen that when
The present embodiment is the preferred embodiment,
Ibut it is to ‘be understood that changes can be made in 55 the engine 10‘ is operating, the gear 14 is rotated to rotate
shaft 15 which in turn will operate the pump 16 and ro
the present embodiment by one skilled in the art without
tate gear 21.
departing ‘from the spirit and scope of the present inven
‘The second pump 23 is alsorcarn'ed ion the section
tion.
~
1212 of the pump drive housing 12, and is secured there-.
For a general description of the present invention,
‘reference is made to the drawings. The pump driving 60 to by fasteners 24 which may be seen in FIGURE 2.
The pump 23 is provided with pressure ‘and suction linesv
means of the invention includes a housing having two
2.5 and 26. The operating shaft 27 of the second pump
sections which are bolted together, one section being
23 extends into the pump drive housing 12 and is jour
secured to one side of the engine in a position whereby
nalled in suitable bearings 28 carried in sections 12a
a gear therein may be driven from either the camshaft
or crankshaft of the engine. The other housing section 65 and 12b of the pump drive housing 12. Although bear
ings are not shown for the other rotating shafts of the
is bolted to the ?rst section and a pair of hydraulic pumps
present invention, it is intended that any suitable bear
are in turn mounted on the second housing section. One
ings ‘therefor be provided. A gear 30 is keyed on the
of the pumps has a gear secured to the end of the pump
shaft 27 in alignment with gear 21'on shaft 15.
_
operating shaft, which, gear meshes with a suitable gear
The drive to the second pump driving gear 30 is
on the camshaft or crankshaft of the engine. Thus it 70
through an idler gear 22. The idler gear 22 is mounted
may be seen that that pump is driven whenever the en~
glue is operating. The operating shaft of that pump
on a shaft 32 for free rotation relative to the shaft 32.
3,039,317
3
4
while prevented from any movement longitudinally of
the shaft 32. The shaft 32 is reciprocably and rotatably
mounted in the pump drive housing 12 and one end
thereof extends outwardly of the housing. The shaft 32
operating shaft of said one device, and gearing on said
longitudinally reciprocable shaft, said last-mentioned
gearing being formed so that when said shaft is in one
of said two positions said gearing of said one device
engages said gearing on said reciprocable shaft and said
gearing on said reciprocable shaft engages said gearing
is so disposed relative to the gears 21 and 39 that when
the shaft 32 is moved to its innermost position such
means on the operating shaft of said other device and
further being formed so that in the other of said two
as shown in FIGURE 4, gear 22 is meshed with gears
21 and 30, ‘and when shaft 32 is moved to its outermost
position, such as shown in the dotted lines in FIGURE
4, gear 22 is disengaged from gears 21 and 30.
positions any drive to said other device is disengaged,
means for longitudinally reciprocating said shaft be
tween said two positions comprising a curved plate se
A novel means for reciprocating shaft 32 is provided,
cured in said arrangement and positioned concentrically
with one end of said reciprocable shaft, -a slot formed
34. As may be seen in FIGURES 2 and 3, the plate
through said curved plate at an angle to the axis‘ of
33 has a curvature substantially equal to the curvature
of the gear 22 and is secured to the section 1212 of the 15 said reciprocable shaft, a lever arm carried in one end
of said reciprocal shaft and positioned at a right angle
pump drive housing 12 by bolts 35 at a position over a
‘and comprises a curved plate 33 and a lever assembly
to the longitudinal axis of said reciprocable shaft and
peripheral portion of the gear 22 and concentric with
the shaft 32. The curved plate 33 is provided with a
slot 36 formed therethrough.
extending through said slot in said curved plate, the
angle of said slot being one wherein said reciprocable
The slot 36 has an en
shaft is moved between said two positions when said
larged portion at each end thereof and is disposed at
an angle to the axis of shaft 32. The lever assembly
lever arm is moved from one end of said slot to the other
end thereof.
34- comprises a rod or lever arm 37 which is secured
through the outer end of the shaft 32 at a right angle
2. In a power take-off arrangement as claimed in claim
1 wherein said slot has a width substantially equal to
5, it may be seen that the rod 37 has a diameter sub 25 the diameter of said lever arm and wherein each end
portion of said slot is enlarged, a spring-biased handle
stantially equal to the width of the intermediate por
mounted on the outer end of said lever arm and biased
tions of the slot 36, and that the outer end of the rod
~ toward said curved plate, the lower end of said handle
37 is provided with a ?ange 38 which extends into a
having a size substantially equal to the size of said en
handle portion 39. The handle portion 39 has a reduced
cylindrical portion 4% at the lower or inner end thereof, 30 larged portions at each end of said slot whereby said lever
arm is locked against movement when the lower portion
and the diameter of the portion 46» is substantially equal
of said handle is positioned in the enlarged portions at
to the diameter of the enlarged sections at each end
each end of said slot and whereby said lever arm is freely
of the slot 36. The handle portion 3§ further has a
movable between the end portions of said slot when the
cylindrical opening therein which is substantially equal
to the diameter of the flange 38 on the rod 37 with the 35 lower end of said handle is withdrawn from said enlarged
portions at each end of said slot.
end adjacent the portion 40 being reduced in diameter
3. A power take-off arrangement for a pair of power
to substantially the diameter of the rod 37. A com
transfer devices, means connectable to an engine for driv
pressed coiled spring 41 is carried in the, handle portion
ing one of said devices, means for driving the other of
39 and is positioned between the ?ange 38 on the rod
37 and the reduced portion of the handle 39 so that 40 said devices comprising a shaft longitudinally reciproca~
ble between two positions to drivingly connect the other
the handle portion 39 is biased by the spring 41 toward
of said devices to said one device in one of said two
the curved plate 33. Thus it may be seen that when
to the axis of shaft 32. Referring to FIGURES 3 and
positions, means for longitudinally reciprocating said shaft
the handle portion of the lever assembly 34 is manually
between said two positions comprising a curved plate
drawn outwardly from the curved plate 33 to further
compress the ‘coiled spring 41, the portion 40 is dis 45 secured in said arrangement and positioned concentri
cally about one end of said shaft, 21 slot ‘including an
engaged from the enlarged sections of the slot 36 and
intermediate portion and end portions formed through said
the lever assembly 34 may then be moved to move the
curved plate at an angle to the axis of said shaft, a
rod 37 to the other end of the slot 36. Release of the
handle portion 39 of the lever assembly 34 will then
cause the portion 4b to engage the enlarged section of
the slot 36 at the other end thereof to lock the lever
lever arm secured at one end to said 1one end of said
shaft and positioned through said slot, the angle of said
slot to the axis of said shaft being sufficient to cause
said shaft to ‘be longitudinally moved between said two
assembly 34 in that position. The movement of the rod
positions, said intermediate portion of said slot having a
width substantiallyequal to the diameter of said lever
37 in the slot 36 causes a rotation and longitudinal dis
placement or reciprocation of the shaft 32, andthe angle
of the slot 36 to the axis of the shaft 32 is ‘selected as 55 arm and wherein each end portion of said slot is enlarged,
a spring biased handle mounted on the outer end of said
one wherein the ‘gear 22 meshes with gears 21 and 30
when the lever assembly 34 is in the lower end of the
slot 36 and the gear 22 is disengaged from the gears
21 and 30 when the lever assembly 34 is in the upper
most position.
Fromthe foregoing it may be seen that the subject
invention provides a relatively simple and positive ar
rangement whereby one pump is driven from an engine
with certain means for selectively engaging or disengag
ing a second pump for drive from the same power take-off
gear.
lever arm; the lower end of said handle having a size sub
stantially corresponding to the enlarged end portions of
said slot, whereby said lever arm is releasably locked at
each end portion of said slot that corresponds to one of
said two positions of said longitudinally movable shaft,
and and whereby said lever arm is freely movable be
tween said end portions when the lower portion of said
handle is moved out of engagement with said end portions
65 of said slot.
4, A power take-‘off arrangement for a pair of power
Having described the invention, what is considered new
and desired to be protected by Letters Patent is:
transfer devices, means connect-able to an engine and con
nected to the operating shaft of one of said devices for
driving said one device, and means, for driving the other
'1. A power take-off arrangementfor a pair of power
transfer devices, means connectible to an engine and 70 of said devices comprising a shaft longitudinally re
ciprocable between two positions, gearing means on the
connected to the operating shaft of one of said devices
for driving said one device, and means for driving the
other of said devices comprising a shaft longitudinally
reciprocable between two positions, gearing means on
the operating shaft of said other device, gearing on the 75
operating shaft of said other device, gearing on the operat
ing shaft of said one device, and gearing on said longi
tudinally reciprocable shaft, said last-mentioned gearing
being formed so that When said shaft is in one of said
‘3,039,317
5
6
said slot is enlarged, ‘a spring biased handle mounted on
two positions said gearing of said one device engages said
the outer end of said lever arm‘, the lower end of said
gearing on said reciprocable shaft and said gearing on said
handle having a size substantially corresponding to the
reciprocable shaft engages said gearing means on the
enlarged end portions of said slot, whereby said lever arm
operating shaft of said other device and further being
formed so that in the other of said two positions any 5 is releasably locked at each end portion of said slot that
corresponds to one of said two positions of said longi
drive to said other device is disengaged, means for lon
gitudinally reciprocating said shaft between said two posi
tudinally movable shaft, and whereby said lever arm is
freely movable between said end portions when the lower
tions comprising a curved plate secured in said arrange
portion of said handle is moved out of engagement with
ment and positioned concentrically about ‘one end of said
shaft, a slot including an intermediate portion and end 10 said end portions of said slot.
portions formed through said curved plate at an angle to
References Cited in the ?le of this patent
the axis of said shaft, a lever arm secured at one end to
said one end of said shaft and positioned through said
UNITED STATES PATENTS
slot, the angle of said slot to the axis of said shaft being
2,127,186
Perkins ______________ __ Aug. 16, 1938
sufficient to cause said shaft to be longitudinally moved 15
2,458,452
Vanni ________________ .._. Jan. 4, 1949
between said two positions, said intermediate portion of
2,543,564
Bakewell ____________ __ Feb. 27, 1951
said slot having a width substantially equal to the diam
2,847,866
Thllrmond ___________ __ Aug. 19, 1958
eter of said lever arm and wherein each end portion of
2,907,221
Haupt _____________ __,-__ Oct. 6, 1959
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