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Патент USA US2114751

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’April 19, 1938.
1.. s. STRIPLJNG
' 2,114,751
POWER CONTROL FOR WINDMILLS
Filed Sept. 1, 1937
3 Sheets-Sheet l
Z U/fE 5. 57/77/04 ?ll/5;
wow/1%
April 19, 1938;
L. s. STRIPLING
2,114,751 .
POWER CONTROL FOR WINDMILLS
Filed Sept. 1, 195’?
3 Sheets-Sheet 2
April 19, 1938.
L. s. STRIPLING
2,114,751
POWER CONTROL FOR WINDMILLS
Filed Sept. 1, 1937
s Sheets-Sheet 5
Z 0'4’! 5. 57/7717. 0V6)
2,114,751
Patented Apr. 19, 1938
UNITED ' STATES
PATENT OFFICE
' 2,114,751
POWER CONTROL FOR. WINDMILLS
Luke S. Stripling, Amarillo, Tex., assignor of one
fourth to H. Ernest Smith, Amarillo, Tex.
Application September 1, 1937, Serial No. 162,055
18 Claims. (Cl. 103—207)
This invention relates to windmills and the
like and has special reference to a power control
for windmills.
More particularly the invention relates to a
5 windmill power control of the general type shown
and described in my prior application for Power
controlling means for windmills, ?led February
3, 1937 and bearing the Serial No. 123,900.
One important object of the invention is to
10 provide an improved structure of this character
and to simplify the construction of my prior
invention.
.
A second important object of the invention is
“to provide an increased efficiency over my prior
structure.
‘
A third important object of the invention is
to provide novel means whereby two pump cyl
inders may be simultaneously operated and con
trolled.
'
A fourth important object of the invention is
to improve the pendulum mechanism of my prior
invention.
A ?fth important object of the invention is to
provide a device of this character arranged to
prevent sudden ?uctuations in the pumping ac
tion of the windmill.
A sixth important object of the invention is to
provide a novel pendulum control for windmills
wherein sudden ?uctuations in wind velocity will
30 be prevented from causing similar ?uctuations in
'
Fig. 8 is a detail side elevation of a modi?ed
manner of connecting a certain auxiliary power
means with the remainder of the mechanism.
Fig. 9 is a detail side elevation disclosing a
modi?ed pendulum arrangement.
In the embodiment of the invention illustrated
in the accompanying drawings it will be seen
that the invention includes a supporting frame 10
indicated in general at ID. This frame includes
a pair of end frames each of which includes a
pair of spaced parallel upper leg members It
having downwardly diverging lower portions I2.
Upwardly converging lower leg members I3 rest 15
against the outer faces of the portions I2 and
are secured in adjusted relation thereto by bolts
I4 passing selectively through bolt holes I5.
Spacer blocks I6 are located between the upper
ends of the members II. The lower ends of each
end pair of leg members I3 are connected by a “
tie rod H which passes through the members
I3. The respective ends of the two tie rods are
connected by longitudinally extending base an
gles or sills I8. The upper ends of each side
pair of legs II are connected by upper longi
tudinal frame members I9, bolts 20 passing
through the upper ends of legs II, the ends of
members I9 and spacers I6. Intermediate up
right frame members 2I are secured to- the mem
the speed of pumping mechanism actuated by
the windmill.
A seventh important object of the invention
bers I9 by bolts 22 and to the sills I8 by bolts 23-.
These members 2| are adjustable for height like
the end frames, each member 2| consisting of
is to utilize in a novel manner as a governor for
an upper section 24 and a lower section 25 se
pumping mechanism actuated by a windmill, the
well known law of pendulums whereby all oscilla
tions of a pendulum of given length require the
cured in adjusted position by bolts 26 selec
tively positioned in spaced bolt holes 21.
same time interval independent of the force ex
erted in oscillating the pendulum.
40
Fig. '7 is an enlarged section on the line 1-1 of
Fig. 1.
With the above and other objects in view as
will be hereinafter apparent, the invention con
sists in general of certain novel details of con
struction and combinations of parts hereinafter
fully described, illustrated in the accompanying
45 drawings and speci?cally claimed.
In the accompanying drawings like characters
of reference indicate like parts in the several
views, and:
Fig.
Fig.
Fig.
Fig.
Fig.
Fig.
l is a side elevation of the improved device.
2 is a plan view thereof.
3 is an end view thereof.
4 is a section on the line 4-4 of Fig. 1.
5 is a section on the line 5-5 of Fig. 1.
6 is an enlarged section on the line 6—6
55 of Fig. 1.
(13 O
A sucker-rod or bar 28 extends downwardly
from the crankshaft (not shown) of any desired
windmill and has its lower end bolted between
the upper ends of a pair of yoke members 29
which have their lower ends bolted to the upper
end of a sucker-rod extension 30 which in turn
has its lower end connected to the upper end
of a pump rod 3| working in a pump cylinder
32. Below and parallel to the members I9 is a
pair of intermediate frame members 33 which
are secured to the left hand members I I by bolts
34 and to the uprights 2| by bolts 35. The sucker
rod extension 30 passes downwardly between the
pair of members I9 and between the pair of 50
members 33. Between the members I9 and be
tween the members 33 extend short shafts 36
whereon are mounted ?anged rollers 3'! which
engage and guide the sinker rod extension 30.
Lower longitudinal frame members 38 are ar 55
2
2,114,751
ranged parallel to the members is and are con
nected at their ends to the members H by bolts
a fork member 8| which is secured to the lower
35*) and to the members 2% by bolts M). A recip
rocating pump actuating rod ii! is located par
allel to and intermediate the members 33 and
the members 38 and its ends pass respectively
between the left hand members H and between
the members 2!. This rod is supported between
shown in Fig. 1. An arcuate guide bar or rail 83
is arranged concentric to the pivotal axis of the
vertically spaced pairs of flanged guide rollers 42,
10 one pair being supported between members ll
end of the stem 56 by bolts 82, the lower end of
the fork being inclined to cause the roller 80 to
lie intermediate the stems 56 and 57 as clearly
stem 55 and is supported at one end by a tie rod
?ll carried by the members 25 and at its other end
by a tie rod 35 carried by the legs I2 at the right
hand of Fig. l.
The roller 89 runs on this rail 10
and the other pair being supported between
members 2i. Extending through the members
and the pendulum 55 is thereby prevented from
lateral oscillation such as might be caused by high
38 on opposite sides of the sucker-rod extension
35 is a pair or" shafts 43 on which are supported
cross winds.
15 grooved chain pulleys 4d and 45. Around the
pulley {ill extends a chain 45 which has one end
anchored to the member Ill by an eyebolt 41 and
has its other end anchored to the bracket 48
carried by the lower portion of the rod 39. The
20 pulley 615 carries a chain as which has one end
anchored to the rod 4! by an eyebolt 5i] and its
other end anchored to the upper end of the rod
55 of a second pump cylinder, 52. The rods 4!
and 5! are also connected by diagonally ex
25 tending links 53 pivoted at the ends of the re
spective rods. With this construction reciproca
tion of the rod d! pulls alternately on the chains
46 and lid and thus alternately raises the pump
rods 3! and 5i. The depression of the rod 3| is
30 effected by the descent of the sucker rod 28 and
the descent of the rod 5i is effected by the down
ward thrust of the link 53 as the rod 4! moves to
the right as shown in Fig. 1.
In order to reciprocate the rod 4! there is pro
35 vided a pair of weighted pendulums 54 and 55
having respectively the stems 55 and 5'!. These
stems extend in an upright direction between
the members is and pivots 58 pass through these
stems 55 and 5? and are held in the members
40 l9.
A link 55
pivotally ‘mounted by a bolt 60
on the stem 56, the bolt being selectively posi
tioned in one of a series of spaced bolt holes 5|
formed in the link 59 to adjust the longitudinal
In order to assist the windmill or even to oper
ate the device when there is no wind auxiliary 15
motor means are provided. At 85 is a motor
which may be an electric motor or a gas or oil
engine. This motor is provided with a belt pulley
8? connected by a belt 88 with a crank disc 89.
This crank disc is carried by a shaft 98 journalled 20
in the members 33 and is provided with a crank
pin 9i selectively positioned in one of a series of
pin holes 92 arranged at graduated distances
from the shaft 99 so that the throw of the disc
may be adjusted. A link-93 connects the pin 9| 25
with a selected one of a series of bolt holes 94
formed in the rod M by means of a bolt 96. Thus
the position of the bar 41 relative to the crank
disc may be adjusted.
In Fig. 8 is shown a modification of the crank 30
disc connection. In this arrangement the parts
are identical with those shown in Fig. 1 except
that there is provided a link 93a which is carried
by the crank pin iii and is connected to the mem
35
ber 35 by a pivot bolt 95a.
In Fig. 9 the modi?ed arrangement is such that
the bar M is replaced by a long bar Ma which is
not only connected to a selected bolt hole 53a of
the stem 56a as before but is also similarly con
nected to a selected bolt hole 631) of the stem 40
51a by a link 5902. In this form the fork 8| is
replaced by a straight fork 8i a which brings the
roller 80 directly below the stem 56a. Further,
position of the link and thus, through the bracket
62 connecting the link and rod 4!, adjusting the
longitudinal disposition of the rod 41 which in
turn adjusts the vertical positions of the pump
rods
and 5 i. Also the pivot bolt 60 is selectively
the upper end of the stem 56a is curved as at 56b
for connection to a rock arm 68a substantially 45
identical with the arm 68 and the straight brace
It is replaced by a curved brace 10a.
insertable in any one of a series of bolt holes 53
causes the arm 68 to oscillate the pendulum 54
50 formed in the stem 56 for the purpose of ad
justing the length of the lever arm extending
from the axis of pivot 58 to pivot iii]. The lower
portions of the stems 55 and 57 are connected by
a link 5!!- having its ends secured to said stems
55 by pivot bolts 55. Similarly the upper ends of
the stems 58 and 51 are connected by a link
56 and pivot bolts 61. One end of a rocker arm
53 is secured to the upper extremity of stem
55 by a bolt 6%. A diagonal brace IE! connects the
stem
and arm 58 to maintain proper angular
relation between said stem and arm. The arm
$38 extends through the yoke 29 at its other end
portion and this end is provided with a series of
spaced bolt holes. Pivot bolt 72 may be positioned
in a selected bolt hole and extend through a se
lected bolt hole ‘iii in one end of a link ‘Id. The
member 35 is provided with a series of bolt holes
‘35 through a selected one of which passes a pivot
bolt it which also passes through a selected bolt
70 hole ll’ forming one of a plurality of such holes
in the lower end of the link lit.
Pendulum weights '68 are secured on the lower
ends 01° the respective stems 56 and 5'! by bolts
79, the weights being preferably masses of con
76 crete. A ?anged guide roller 80 is journalled in
In operation reciprocation of the sucker rod
which, through its link connection oscillates the 50
pendulum 55. ‘The linkage connection of these
pendulums with the bar M reciprocates this bar
and causes alternate raising of the pump rods
3! and 5i, these being depressed by the action of
55
the sucker rod and link 53.
By reason of the law of pendulum oscillation,
once the sucker rod has been started to recipro
cate and as long as it continues to reciprocate
sudden increases or drops in the velocity of the
wind actuating the windmill will not correspond 60
ingly affect the speed of reciprocation of the
sucker rod since tendency to speeding up of the
rod movement will be damped by the pendulums
and tendency to dropping oi the speed will be
compensated by the inertia of the pendulums. 65
The device will thus operate at a constant close
approximation to the speed due to mean wind
velocity.
There has thus been provided a simple and
ef?cient device of the kind described and for the 70
purpose speci?ed.
It is obvious that minor changes may be made
in the form and construction of the invention
without departing from the material spirit there
of. It is not, therefore, desired to con?ne the
2,114,751,
invention to the exact form herein shown and
described, but it is desired to include all such
as properly come within the scope claimed.
Having thus described the invention, what is
claimed as new, is:
1. In a windmill having a vertically recipro
cating element, a power controlling device in~
eluding an elongated supporting frame, a hori
zontal bar mounted, for reciprocation longitu
10 dinally in said frame, a pendulum pivoted in
termediate its ends in the upper part of said
frame and arranged to oscillate in a vertical
plane extending longitudinally of the frame, said
pendulum having its lower end weighted, an op
15 erative connection between said vertically recip
20
25
30
35
40
45
rocating element and said pendulum, a pair of
vertical pumps each including a pump rod, idler
pulleys supported in said frame on opposite sides
of said vertical element, chains connected to the
upper ends of said pump rods and extending di
vergingly over said pulleys and having their ends
connected to said horizontal bar, and an opera
tive connection between said pendulum and bar.
2. In a windmill having a vertically recipro
cating element, a power controlling device in
cluding an elongated supporting frame, a hori
zontal bar mounted for reciprocation longitu
dinally in said frame, a pendulum pivoted inter
mediate its ends in the upper part of said frame
and arranged to oscillate in a vertical plane ex—
tending longitudinally of the frame, said pen
dulum having its lower end weighted, an opera
tive connection between said vertically recipro~
cating element and said pendulum, a pair of
vertical pumps each including a pump rod; idler
pulleys supported in said frame on opposite sides
of said vertical element, chains connected to the
upper ends of said pump rods and extending
divergingly over said pulleys and having their
ends connected to said horizontal bar, an op
erative connection between said pendulum and
bar, and arcuate guide means for the lower end
of said pendulum.
3. In a windmill having a vertically recipro
cating element, a power controlling vdevice in
cluding an elongated supporting frame, a hori
zontal bar mounted for reciprocation longitu
dinally in said frame, a pendulum pivoted in
termediate its ends in the upper part of said
50 frame and arranged to oscillate in a vertical
plane extending longitudinally of the frame, said
pendulum having its lower end weighted, an
operative ‘connection between said vertically
reciprocating element and said pendulum, a pair
551 of vertical pumps each including a pump rod,
idler pulleys supported in said frame on opposite
sides of said vertical element, chains connected
to the upper ends of said pump rods and extend
ing divergingly over said pulleys and having their
ends connected to said horizontal bar, an op
erative connection between said pendulum and
bar, a grooved roller carried by the lower end
of said pendulum, and an arcuate guide rail for
said roller ?xed in said frame concentric to the
65 pivoted aids of said pendulum.
4. In a windmill having a vertically recipro
cating element, a power controlling device in
cluding an elongated supporting frame, a hori-'
zontal bar mounted for reciprocation longitu
70 dinally in said frame, a pendulum pivoted inter
mediate its ends in the upper part of said frame
and arranged to oscillate in a vertical plane ex
tending longitudinally of the frame, said pen
dulum having its lower end weighted, an opera
75 tive connection between said vertically recip
3
rocating element and said pendulum, a pair of
vertical pumps each including a pump rod, idler
pulleys supported in said frame on opposite sides
of said vertical element, chains connected to
the upper ends of said pump rods and extending
divergingly over said pulleys and having their
ends connected to said horizontal bar, a link
having one end pivoted to the bar adjacent said
pendulum, and means for connecting the other
end of said link to the pendulum at a selected 10
distance from the pivoted axis of the pendulum.
5. In a windmill having a vertically recipro
cating element, a power controlling device in
cluding an elongated supporting ‘frame, a hori
zontal bar mounted for reciprocation longitu 15
dinally in said frame, a pendulum pivoted in
termediate its ends in the upper part of said
frame and arranged to oscillate in a vertical plane
extending longitudinally of the frame, said pen
dulum having its lower end weighted, an opera 20
tive connection between said vertically recip
rocating element and said pendulum, a pair of
vertical pumps each including a pump rod, idler
pulleys supported in said frame on opposite sides
of said vertical element, chains connected to
the upper ends of said pump rods and extending
divergingly over said pulleys and having their
ends connected to said horizontal bar, a link
having one end pivoted to the bar adjacent said
pendulum, means for connecting the other end
of said link to the pendulum at a selected dis
tance from the pivotal axis of the pendulum, and
arcuate guide means for the lower end of said
pendulum.
6. In a windmill having a vertically reciprocate 35
ing element, a power controlling device in
cluding an elongated supporting frame, a hori
zontal bar mounted for reciprocation longitu
dinally in said frame, a pendulum pivoted in
termediate its ends in the upper part of said 40
frame and arranged to oscillate in a vertical plane
extending longitudinally of the frame, said pen
dulum having its lower end weighted, an opera
tive connection between said vertically recipro
cating element and said pendulum, a pair of 45
vertical pumps each including a pump rod, idler
pulleys supported in said frame on opposite sides
of said vertical element, chains connected to the
upper ends of said pump rods and extending di
vergingly over said pulleys and having their ends
connected to said horizontal bar, a link having
one end pivoted to the bar adjacentsaid pen
dulum, means for connecting the other end of
said link to the pendulum at a selected distance
from the pivoted axis of the pendulum, a grooved
roller carried by the lower end of said pendulum,
and an arcuate guide rail for said roller ?xed in
said frame concentric to the pivoted axis of said
pendulum.
'7. In a windmill having a vertically reciprocate
ing element, a power controlling device including
an elongated supporting frame, a horizontal bar
mounted for reciprocation longitudinally in said
frame, a pendulum pivoted intermediate its ends
in the upper part of said frame and arranged 65
to oscillate in a vertical plane extending longi
tudinally of the frame, said pendulum having its
lower end weighted, an operative connection be
tween said vertically reciprocating element and
said pendulum, a pair of vertical purnps each 70
including a pump rod, idler pulleys supported in
said frame on opposite sides of said vertical ele
ment, chains connected to the upper ends of said
pump rods and extending divergingly over said
pulleys and having their ends connected to said 75
2,114,751
horizontal bar, an operative connection between
said pendulum and bar, said vertical element
having its lower end connected to the upper end
of one of said pump rods, and a diagonal thrust
link connecting the horizontal bar with the upper
end of the other pump rod.
8. In a windmill having a vertically recipro
cating element, a power controlling device in
cluding an elongated supporting frame, a hori
10 zontal bar mounted for reciprocation longitudi
nally in said frame, a pendulum pivoted inter
.mediate its ends in the upper part of said frame
and arranged to oscillate in a vertical plane ex
tending longitudinally of the frame, said pendu
lum having its lower end weighted, an operative
connection between said vertically reciprocating
element and said pendulum, a pair of vertical
pumps each including a pump rod, idler pulleys
supported in said frame on opposite sides of said
vertical element, chains connected to the upper
ends of said pump rods and extending divergingly
over said pulleys and having their ends connected
to said horizontal bar, an operative connection
between said pendulum and bar, said vertical ele
ment having its lower end connected to the upper
end of one of said pump rods, and a diagonal
thrust link connecting the horizontal bar with
the upper end of the other pump rod, and arcu
ate guide means for the lower end of said pendu
lum.
9. In a windmill having a vertically reciprocat
ing element, a power controlling device including
an elongated supporting frame, a horizontal bar
mounted for reciprocation longitudinally in said
frame, a pendulum pivoted intermediate its ends
in the upper part of said frame and arranged to
oscillate in a vertical plane extending longitudi
nally of the frame, said pendulum having its low
er end weighted, an operative connection between
40 said vertically reciprocating element and said
pendulum, a pair of vertical pumps each includ
ing a pump rod, idler pulleys supported in said
frame on opposite sides of said vertical element,
chains connected to the upper ends of said pump
4:5 rods and extending divergingly over said pulleys
and having their ends connected to said horizon
tal bar, an operative connection between said
pendulum and bar, said vertical element having
its lower end connected to the upper end of one
50 of said pump rods, a diagonal thrust link con
necting the horizontal bar with the upper end of
the other pump rod, a grooved roller carried by
the lower end of said pendulum, and an arcuate
guide rail for said roller fixed in said frame con
55 centric to the pivotal axis of said pendulum.
10. In a windmill having a vertically recipro
cating element, a power controlling device in
cluding an elongated supporting frame, a hori
zontal bar mounted for reciprocation longitudi
60 nally in said frame, a pendulum pivoted inter
mediate its ends in the upper part of said frame
and arranged to oscillate in a vertical plane ex
tending longitudinally of the frame, said pendu~
lum having its lower end weighted, an operative
65 connection between said vertically reciprocating
element and said pendulum, a pair of vertical
pumps each including a pump rod, idler pulleys
supported in said frame on opposite sides of said
vertical element, chains connected to the upper
70 ends of said pump rods and extending diverging
ly over said pulleys and having their ends con
nected to said horizontal bar, an operative con
nection between said pendulum and bar, said
vertical element having its lower end connected
75 to the upper end of one of said pump rods, a
diagonal thrust link connecting the horizontal
bar with the upper end of the other pump’ rod, a
link having one end pivoted to the bar adjacent
said pendulum, and means for connecting the
other end of said link to the pendulum at a se
lected distance from the pivotal axis of the
pendulum.
11. In a windmill having a vertically recipro
cating element, a power controlling device in
cluding an elongated supporting frame, a hori 10
zontal bar mounted for reciprocation longitudi
nally in said frame, a pendulum pivoted inter
mediate its ends in the upper part of said frame
and arranged to oscillate in a vertical plane ex
tending longitudinally of the frame, said pendu 15
lum having its lower end weighted, an operative
connection between said vertically reciprocating
element and said pendulum, a pair of vertical
pumps each including a pump rod, idler pulleys
supported in said frame on opposite sides of said 20
vertical element, chains connected to the upper
ends of said pump rods and extending divergingly
over said pulleys and having their ends con
nected to said horizontal bar, an operative con
nection between said pendulum and bar, said ver 25
tical element having its lower end connected to
the upper end of one of said pump rods, a diagonal
thrust link connecting the horizontal bar with
the upper end of the other pump rod, a link
having one end pivoted to the bar adjacent said 80
pendulum, means for connecting the other end
of said link to the pendulum at a selected dis
tance from the pivotal axis of the pendulum, and
arcuate guide means for the lower end of said
pendulum.
35
12. In a windmill having a vertically recipro
cating element, a power controlling device‘ includ~
ing an elongated supporting frame, a horizontal
bar mounted for reciprocation longitudinally in
said frame, a pendulum pivoted intermediate its
ends in the upper part of said frame and ar
ranged to oscillate in a vertical plane extending
longitudinally of the frame, said pendulum hav
ing its lower end weighted, an operative connec
tion between said vertically reciprocating element
and said pendulum, a pair of vertical pumps each
including a pump rod, idler pulleys supported in
said frame on opposite sides of said vertical ele
ment, chains connected to the upper ends of said
pump rods and extending divergingly over said 60
pulleys and having their ends connected to said
horizontal bar, an operative connection between
said pendulum and bar, said vertical element
having its lower end connected to the upper end
of one of said pump rods, a diagonal thrust link 55
connecting the horizontal bar with the upper end
of the other pump rod, means for connecting the
other end of said link to the pendulum at a se
lected distance from the pivotal axis of the pen
dulum, a grooved roller carried by the lower end 60
of said pendulum, and an arcuate guide rail for
said roller ?xed in said frame concentric to the
pivotal axis of said pendulum.
13. In a windmill having a vertically recipro
cating element, a power controlling device in 65
cluding an elongated supporting frame, a hori
zontal bar mounted for reciprocation longitu
dinally in said frame, a pendulum pivoted inter
mediate its ends in the upper part of said frame
and arranged to oscillate in a vertical plane ex
70
tending longitudinally of the frame, said pendu
lum having its lower end weighted, an operative
connection between said vertically reciprocating
element and said pendulum, a pair of vertical
pumps each including a pump rod, idler pulleys 75
2,114,751
supported in said frame on opposite sides of said
vertical element, chains connected to the upper
ends of said pump rods and extending diverg
ingly over said pulleys and having their ends
connected to said horizontal bar, an operative
connection between said pendulum and bar, said
vertical element having its lower end connected
to the upper end of one of said pump rods, a
diagonal thrust link connecting the horizontal
10 bar with the upper end of the other pump rod,
5
mediate its ends in the upper part of said frame
and arranged to oscillate in a vertical plane ex
tending longitudinally of the frame, said pendu
lum having its lower end weighted, an operative
connection between said vertically reciprocating
element and said pendulum, a pair of vertical
pumps each including a pump rod, idler pulleys
supported‘in said frame on opposite sides of said
vertical element, chains connected to the upper
ends of said pump rods and extending diverging 10
a second weighted pendulum pivoted in said
frame parallel to the first pendulum, and link
means connecting said pendulum to cause them
to swing in unison.
14. In a windmill having a vertically recipro
cating element, a power controlling device in
cluding an elongated supporting frame, a hori
zontal bar mounted for reciprocation longitu
dinally in said frame, a pendulum pivoted inter
mediate its ends in the upper part of said frame
and arranged to oscillate in a vertical plane ex
ly over said pulleys and having their ends con
nected to said horizontal bar, an operative con
tending longitudinally of the frame, said pendu
bar adjacent said pendulum, and means for con
necting the other end of said link to the pendu
lum at a selected distance from the pivotal axis
25
of the pendulum.
lum having its lower end weighted, an operative
connection between said vertically reciprocating
element and said pendulum, a pair of vertical
pumps each including a pump rod, idler pulleys
supported in said frame on opposite sides of said
vertical element, chains connected to the upper
nection between said pendulum and bar, said ver
tical element having its lower end connected to
the upper end of one of said pump rods, a diago 15
nal thrust link connecting the horizontal bar
with the upper end of the other pump rod, a
second weighted pendulum pivoted in said frame
parallel to the ?rst pendulum, link means con
necting said pendulum to cause them to swing 20
in unison, a link having one one pivoted to the
17. In a windmill having a vertically recipro
cating element, a power controlling device in
cluding an elongated supporting frame, a hori
ends of said pump rods and extending diverg
ingly over said pulleys and having their ends con"
zontal bar mounted for reciprocation longitudi
nally in said frame, a pendulum pivoted inter
nected to said horizontal bar, an operative con
nection between said pendulum and bar, said ver
tical element having its lower end connected to
the upper end of one of said pump rods, a diago
nal thrust link connecting the horizontal bar'
with the upper end of the other pump rod, a sec
mediate its ends in the upper part of said frame
and arranged to oscillate in a vertical plane ex
ond weighted pendulum pivoted in said frame
parallel to the ?rst pendulum, link means con
necting said pendulum to cause them to swing
in unison, and arcuate guide means for the lower
end of said pendulum.
15. In a windmill having a vertically recipro
cating element, a power controlling device in
cluding an elongated supporting frame, a hori
zontal bar mounted for reciprocation longitudi
nally in said frame, a pendulum pivoted inter
mediate its ends in the upper part of said frame
30
tending longitudinally of the frame, said pendu
lum having its lower end weighted, an operative
connection between said vertically reciprocating 35
element and said pendulum, a pair of vertical
pumps each including a pump rod, idler pulleys
supported in said frame on opposite sides of said
vertical element, chains connected to the upper
ends of said pump rods and extending diverging
ly over said pulleys and having their ends con
nected to said horizontal bar, an operative con
nection between said pendulum and bar, said
vertical element having its lower end connected to
the upper end of one of said pump rods, a diago
nal thrust link connecting the horizontal bar
with the upper end of the other pump rod, a
and arranged to oscillate in a vertical plane ex
second weighted pendulum pivoted in said frame
tending longitudinally of the frame, said pendu
parallel to the first pendulum, link means con
necting said pendulum to cause them to swing 50
in unison, a link having one end pivoted to the
bar adjacent said pendulum, means for connect
50 lum having its lower end weighted, an operative
connection between said vertically reciprocating
element and said pendulum, a pair of vertical
pumps each including a pump rod, idler pulleys
supported in said frame on opposite sides of said
55 vertical element, chains connected to the upper
ends of said pump rods and extending diverging
ly over said pulleys and having their ends con
nected to said horizontal bar, an operative con
nection between said pendulum and bar, said ver
tical element having its lower end connected to
ing the other end of said link to the pendulum
at a selected distance from the pivotal axis of
the pendulum, and arcuate guide means for the
lower end of said pendulum.
18. In a windmill having a vertically recipro
with the upper end of the other pump rod, a
cating element, a power controlling device in
cluding an elongated supporting frame, a hori
zontal bar mounted for reciprocation longitu 60
dinally in said frame, a pendulum pivoted inter
mediate its ends in the upper part of said frame
and arranged to oscillate in a vertical plane ex
second weighted pendulum pivoted in said frame
tending longitudinally of the frame, said pendu
parallel to the ?rst pendulum, link means con
necting said pendulum to cause them to swing in
unison, a grooved roller carried by the lower
end of said pendulum, and an arcuate guide rail
for said roller ?xed in said frame concentric to
lum having its lower end weighted, an operative 65
connection between said vertically reciprocating
element and said pendulum, a pair of vertical
pumps each including a pump rod, idler pulleys
supported in said frame on opposite sides of said
vertical element, chains connected to the upper 70
ends of said pump rods and extending diverging
ly over said pulleys and having their ends con
nected to said horizontal bar, an operative con
nection between said pendulum and bar, said
vertical element having its lower end connected 75
the upper end of one of said pump rods, a diago
nal thrust link connecting the horizontal bar
the pivotal axis of said pendulum.
16. In a windmill having a vertically recipro
cating element, a power controlling device in
cluding an elongated supporting frame, a hori
zontal bar mounted for reciprocation longitudi
75 nally in said frame, a pendulum pivoted inter
6
2,114,751
to the upper end of one of said pump rods, a
diagonal thrust link connecting the horizontal
bar with the upper end of the other pump rod, a
second weighted pendulum pivoted in said frame
parallel to the ?rst pendulum, link means con
necting said pendulum to cause them to swing
in unison, a link having one end pivoted to‘ the
bar adjacent said pendulum, means for connect
ing the other end of said link to the pendulum at
a selected distance from the pivotal axis of the
pendulum, a grooved roller carried by the lower
end of said pendulum, and an arcuate guide rail
for said roller ?xed in said frame concentric to
the pivotal axis of said pendulum.
LUKE S. S'I‘RIPLING.
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