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Патент USA US2133822

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oct. 1s, 193s.
R Q_ ._AMOND
'
2,133,822
HOISTING MECHANI SM
Filed NOV.` 2l, 1935
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4 Sheet:§-Shee‘b l
Oct.l 18, 1938.*
R. c. LAMOND
HOISTING MECHANISM
Filed Nov. 21, 1935
4 Sheets-Sheet 2
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Oct, 18, 1938.
R. c. LAMOND
2,133,822
HOISTING MECHANISM
Filed NOV. 21, 1955
’ 4 sheets-*sheet 4
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m3 NS hä
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2,133,822
Patented Oct. 18, 1938
UNITED STATES
PATENT OFFICE `
` 2,133,822
HOISTING MECHANISM
assignor to
Robert C. Lamond, Philadelphia, Pa.,Philadelphia,
American Engineering Company,
Pa., a corporation of Pennsylvania ,
Application November 21, 1935, Serial No. 50,856
23 Claims. (Cl. 251-172)
This invention relates to hoisting apparatus,
and more particularly to hoisting apparatus em
ployed on board ship or on Wharves, for handling
boats, airplanes, and other floating objects.
In devices of the stated character, after the
object to be hoistedhas been brought adjacent
shown and described in United States Patent No.
2,013,690, to which reference may be had for a
full disclosure thereof.
Referring to the drawings, the numeral I desig
the ship or wharf on which the hoisting appa
ratus is mounted, the cable is first attached
thereto. Due to the action of the Waves, sudden
¿strains are imposed upon the cable, as well as
nates a crane comprising a mast 2, and a boom 5
3.
the object because of the bobbing action thereof,
as well as the rolling and pitching of the ship.
These sudden strains often cause either snapping
of the cable or serious damage to- the object han
dled. This is especially true in connection with
airplanes, since the construction thereof is not
sturdy enough to withstand sudden strains.
One object of the present invention is to pro
vide automatic means for operating the winch
. to pay out cable when sudden loads are imposed
thereon, and to wind in cable when any slack
occurs therein.
Another object is to provide a novel mechanism
for controlling the operation of such automatic
means.
A more specific object is to provide in appara-y
tus of the stated character, differential gearing
between the winding drum of the winch and the
operating mechanism therefor, and automatically
controlled electrohydraulic means for effecting
actuation of the winding drum to pay out or wind
in cable independently of the operating mech
anism.
`
Other and further objects will become appar
ent
as the description of the invention progresses.
35
Of the drawings:
'
Fig. 1 is an elevational view of the hoisting ap
paratus to which the present invention is ap
plied.
40
The lower end of mast 2 is mounted in a
thrust bearing 4 and extends upwardly through
a supporting structure 5, machine platform >6,
Fig. 2 is a plan view of one of the Winches hav
ing associated therewith my improved tensioning
device, some of the parts thereof being shown
in section.
Fig. 3 is a side elevational view partly in sec
tion of the automatic tensioning device showing
45. .
certain of the control elements associated there
with.
Fig. 4 is a side elevational view partly in sec
tion of the mechanism for controllingthe strok
ing of the main pump of the hoisting apparatus,
and
Fig. 5 is a side elevational view partly in sec
tion of a modified type of tensioning device.
>The hoisting apparatus to which the present
55.12 invention is applied is generally similar to that
and an auxiliary platform 1. Platforms 6 and 1
are secured to the mast 2 by any suitable means. 10
The mast 2 is provided with a lateral thrust bear
ing 8 intermediate the ends thereof, which op
erates in a race 9, mounted at the upper end of
a supporting bracket I0. The boom 3 is pivotally
supported at the lower end thereof `in bearing 15
brackets II secured to the platformk 6, as shown
in Fig. 1. Mounted in a suitable framework I2,
secured to brackets» I0, is an internal gear I3
which meshes with a pinion I4. Pinion I4 is se
cured to the driven shaft I5 of an operating 20 ’
mechanism I6 for rotating platforms E and 1 and
mast 2 in a well known manner.
Operating
mechanism I6 is secured to a framework I1 and
machine platforml 6 in any suitable manner.
Operatively associated with mast 2 and boom 3 25
are three Winches I8, I9 and 20 respectively.
Winch I8 is mounted in a suitableframework 2I
secured to and extending upwardly from plat
form 1, and is employed forl the purpose of
swinging boom 3.
W'nches I9 and 20 are 30v
mounted respectively in frameworks 22 and 23
'
secured to and extending upwardly from ma
chine platform 6.
Winch I9 in the present apparatus is employed
for handling airplanes and will be hereinafter 35V
referred to as the airplane winch, while winch
2li is employed for handling boats, such as tend
ers, and will hereinafter be referred to as theV
boat winch.
A cable 24-extends upwardly from the winding 40
drum 25 of winch I8 and is trained around dif
ferential pulleys 26 and 21, the former being
rotatably mounted vin a bracket 28 secured to
the top of mast 2, while the latter is similarly
mounted in a bracket 29 secured to boom 3, 45
and the end of the cable is secured to a bracket
30 secured to andv extending laterally of mast 2.
A cable 3l extending from the winding drum 32
of airplane winch I9 is trained around a sheave
33 rotatably mounted in suitable bearings pro- 50,
vided near the upper end of boom 3 and the end
thereof is provided with the usual hook 34. A
cable 35 also. extends from the winding drum 36
of boat winch 20 and is trained over guide _rolls
31 and 38 provided in boom 3, and thence around 55
2
-
2,133,822
sheave 39 rotatably mounted in a bearing bracket
404 secured to boom 3 a short distance from the
upper end thereof. The cable 35 is then trained
around differential pulleys 4| and 42 and the
end thereof is secured to a block 43 mounted
on pulley 4|. Pulley 42 is rotatably mounted in
a bracket 44, secured to boom 3, while pulley 4|
is suspended therefrom by cable 35 and the lower
end of block 43 mounted thereon is provided with
10 the usual hook 45. Winches |8, | 9 and 20 are
respectively driven by fluid motors MI, M2 andv
M3 through reduction gearing designated gen'
erally by numerals 46, 41 and 48. Fluid motors '
Ml, M2 and M3 are operated by pumps Pl, P2
and P3 through piping connections49, 50 and 5|.
Pumps PI, P2 and P3 may be interconnected for
simultaneous operation by suitable driving means
such as an electric motor, or» separate driving
means may be provided for each of said pumps.
matic tensioning device designated generally by
60, 64, 65, 10, 'H and 15, just described.
Control lever 55 is secured to a shaft 55a suit
ably journaled in a bracket 55h, secured to and
depending from platform -I. Secured to and de
pending from shaft 55a is an arm Tl, at the free
end of which is pivotally connected one end of a
link 18, the other end ofY which is pivotally con
nected to the free end of an arm '|9, secured to
a shaft 80 journaled in a second bracket 8|, also
secured to and depending from said platform 1.
A substantially horizontal arm 82 is also secured
to- shaft> 80 and has pivotally connected to the
free end thereof a yoke 83, secured to a cross bar
84. The opposite ends of cross bar 84 have se
cured thereto theï upper ends of a pair of guide
rods 85, the lower ends of which being connected
Pumps PI, P2 and P3, and motors M|`,- M2V and
M3 are of the variable stroke reversible discharge
type shown and described in UnitedStates Patent
No. 1,077,979 to which reference may be had for a
full disclosure thereof. In pumps of this char
acter it is Vwell known thatupon adjustment of
certain controls therein to one’ position from
neutral causes the pump to discharge in one direc
tion, and when said controls are adjusted in the
opposite direction from neutral position the.
pump will discharge in the reverse direction. In
this manner the direction of rotation of the
motors driven thereby may be controlled. In the
present instance control levers 55 are pivotally
supported on the platform '|, each having a link
35 and lever mechanism associated therewith opera
tively connecting the same to the controls of the
pumps PI, P2 and P3. By manipulation of these
control levers 55 the boom 3 may be swung up or
down by the operationl of winch |8, while Winches
40 |9 and 20 may be operated respectively to- either
wind in or pay out cable therefrom.
In the present» case the boat and airplane
Winches have each associated therewith an auto
the numeral 56 for maintaining the cable taut
under operating conditions.
Inasmuch as the automatic tensioning device,
as well as the apparatus generally associated with
the winch, is similar in each case, a description
of the structure and» operation of the mecha
nisms associated> with the-airplane winch will suf
fice for both. For clarity only the controls for
the transmission associated with this winch are
shown in Figs. 2 to 4 of the drawings.
55
Referring more particularly to Figs. 2 and 4, it
therefore is seen that when ring gear '|4 is held
stationary, winding drum 32 will be actuated upon
operation of motor M2 through the gearing 59,
to the sliding block 86 of pump P2 in a well known
manner. A manually operable latch 81 provided
on lever 55 is adapted to engage in a notch 88v
provided in a latch plate 89, mounted adjacent
to lever 55, when the slidingA blocks 86 of pump
P2 are in neutral position. Upon releasing latch
87 lever 55 maybe swung in either direction about
its pivot to so adjust the sliding blocks 86 of
pump P2 as to control the direction of rotation
of winding drum 32.
The automatic tensioning device associated 30
with the winch just described consists of an hy
draulic transmission 90 driven by an electric mo
tor 9|.. In the present instance the transmission
90 and motor 9| are enclosed within a common
casing. The drive shaft 92 of the hydraulic mo 35
tor end of transmission 90 has keyed> thereto a
worm gear 93 adapted for axial movement on
said shaft. A rodA 94 is secured at one end to
worm- gear 93, the' other end being slidably
mounted in a guide bracket 95 secured to the
other side of the casing 96 housing the differen
tial gear 69. A coil spring 91 surrounds rod 94
and extends between the right hand end of gear
93 and the upper right hand side wall 98 of
casing 96. An extension 99 is provided at the
left end of gear 93 (Fig. 3) having a circumfer
ential groove |00 provided therein for receiving
a pair of rollers |0| mounted at the lower ends' of
the legs of a yoke |02. Yoke |02 is secured to
the lower end of the substantially vertical arm
|03 of a bell crank lever |04 pivotally supported
on a vertically extending bracket |05 securedV to
the upper end of casing~ 96 in any suitable man
ner. lI-‘he free end of the substantially horizontal
arm |06 of bell crank |04 has pivotally sup'
1s
'
seen that an electric
motor 5l is operatively ' ported thereon the upper end of a guide rod |01
connected to pump P2 by any suitable coupling secured to and extending upwardly from the
means 58. The motor M2 driven by pump P2 sliding block |08 of the pump end of transmis
through the piping connections 50 has provided
sion 90. Rod 94 has secured thereto near the~ on the drive shaft thereof a pinion 59 which
right hand end thereof a collar |09 adapted' for 60" meshes with a gear 60 secured to a shaft 6|'. engagement in notches ||0 provided in the up
Shaft 6| is mounted in suitable bearings 62 and per end of a yoke || |. Yoke || | is secured to thev
63 and has secured thereto intermediate its ends upper end of a rod ||2 guided for vertical move
a pinion 64 which meshes with a gear 65. Gear
65 65 is rotatably supported upon a shaft 69, jour
ment in a bearing bracket ||3 secured tothe
right hand side of casing 96. The lower end of
rod>> | I2 has pivotally connected thereto the upper
Shaft 66 extends through differential gearing |39v end
of a link || 4, the lower end of which being'
and winding drum 32. Gear 65 has secured there
naled at the ends thereof in bearings> 6l and 68.
to a bevel gear 'l0 which meshes with a series of
70 smaller bevel gears 1| >rotatably'-journaled on‘
pintles 'l2 of a spider 'I3 rotatably mounted on
shaft 96. The outer ends of‘ pintles 'l2 are secured'
to worm wheel 'I4 and in any suitable manner'.
Gears '|| also mesh with a bevel gear 'l5 secured
75 .to the hub portion 16' of winding drum 32. It
pivoted to the outer end of anV arm | I5 secured to
a shaft I|6 journaled in a bracket |I`| secured
to and depending from platform 1.
Shaft ||6-
has also secured thereto a second arm ||8 hav
ing pivotally supported at the free end» thereof
one end of a link ||9, the other end of which be
ing> pivotally connected to the lower end of an
arm |20 secured toa shaft |2l|, journaled in aV
3
2,133,822'
second bracket |22, also secured to and depend
ing from platform 1. A control lever |23 is also
secured to shaft |2I and extends vertically
through platform 1 adjacent a latch plate |24
having notches |25, |26 and |21 respectively,
provided therein. Lever |23 has also provided
thereon a manually operable latch |28 adapted
to engage in said notches |25, |26 or |21. Fig. 3
shows latch |28 in engagement with notch |26,
When this occursspring 91 will urge worm gear
93 to the left (Fig. 3) causing ring gear 14 to
rotate in a counterclockwise direction. The small
bevel gears 1| will now simply roll on the larger
bevel gear 1|0 of the differential gear 69, impart
ing rotary movement to bevel gear 15, causing a
slight rotation of the winding drum 32. When
worm gear 93 moves in this manner bell crank
|04 will be rockedin a clockwise direction, caus
at which time the collar |09 on rod 94 bears
against the left hand edge |29 of the extension
|30 of yoke I||. At this time worm gear 9,3
can only move to the left by the action of spring
91. When lever |23 is so adjusted that latch
|28 engages in notch |25, yoke ||| will have been
moved downwardly so as to permit worm gear
93, as well as rod 94, to move to the right by the
action of gear 14, and also to the left by the
action of spring 91. Lever |23 is adjusted to this
position when the hoisting cable 3| is attached
to the airplane so that transmission 90 will so
operate the differential gearing 69 as to wind in
cable when slack occurs therein and to pay out
» cable when a predetermined load is imposed
When lever |23 is adjusted so that
I thereon.
latch |28 engages in notch |26, as pointed out
before, worm gear 93 can not slide to the right
so as to pay out cable. Accordingly, lever |23 is
adjusted to this position when it is desired to
hoist the craft on board ship. When lever |23
is so adjusted that latch |28 engages in notch
|21, yoke | | | will be moved upwardly so that the
collar |09 will engage in notches ||0. When in
this position worm gear 93', as well as rod 94, is
held against movement in either direction. Lever
|23 occupies this position when it is desired to
operate the winch without the use of the ten»
sioning device, or when cable is being paid out
so as to permit attachment of the hook thereon
to the airplane.
From the above description of the structure of
my improved apparatus the operation thereof is
thought to be clear. However, in order to corre
late the various elements just described, a brief
description of the operation of the apparatus as
a whole will now be given.
Upon energization of electric motors 51 and
9|, the cylinder bodies associated with pump
P2 and the pump end of transmission 90 respec
tively, will be rotated. Lever |23 under these
preliminary conditions is adjusted so that latch
|28 engages in notch |21 of latch plate 24.
Latch 81 of lever 55 will now be released and the
latter swung in such a direction as to cause
pump P2 to actuate motor M2, which through
gearing 59, 60, 64, 65 and 69 will cause winding
drum 32 to pay out cable so that the hook 34
thereon may be attached to the airplane. Lever
|23 is now actuated to the left (Fig. 3) until
latch |28 engages in notch |25, at which time
ing adjustment of the sliding block |08 of the 10T
pump end of transmission 90. When this occurs
the motor end of the transmission will rotate the
shaft 92, as well as worm gear 93 and inasmuch
as bevel gear 10 is held against movement, as
previously described, winding drum 32 will be 15
actuated by bevel gears 1| operating on bevel gear
15 in such a manner as to wind in the cable 3|
to take up the slack therein.
On the other hand, when a load is imposed on
cable 3|, winding drum 32 will tendV to rotate 20"
bevel gear 15 in the’ reverse direction, which
movement is imparted to small bevel gears 1|,
which roll on bevel gear 10 and tend to rotate
ring gear 14 in the reverse direction. This action Y
causes a sliding movement of worm gear 93l to
the right (Fig. 3) against the action of spring 91. ’
When the load imposed upon the cable exceeds
a predetermined value, as determined by the
tension of spring 91, worm gear 93 will be moved
further to the right. This movement is imparted 30
to bell crank |04 which adjusts sliding blocks |08
in the opposite direction. By this action the
operation of the motor end of transmission 90
will be reversed, and worm gear 93 will now rotate
in the reverse direction, causing winding drum 32 35
to pay out cable. In this manner the cable 3|
is maintained taut and damage thereto, as well
as to the object being handled, is prevented.
When it is desired to hoist the airplane on board
ship, lever |23 is actuated to position shown in
Fig. 3, at which time latch |28 engages in notch
|26. Worm gear 93, as well as rod 94. is thus
prevented from movement to the right from a
neutral position so that the pump end of trans
mission 90' can not now be so adjusted as to
cause an operation of drum 32 in the direction
for paying out cable. Lever 55 is now releasedl
and so adjusted as to operate the sliding blocks
86 of pump P2 in such a manner as to cause
motor M2 to operate inthe reverse direction,
which through the train of gearing, previously
described, will rotate winding drum 32, causing
the latter to wind in cable and thereby enable
hoising of the airplane on board ship. When=
the airplane has been hoisted a sufficient distance
above the water so as to clear the deck, the boom
3 is swung inboard. Lever 55 is then actuated
in the reverse direction to permit winding drum
32-to pay out cable so that the airplane may be
landed on the deck of the ship.
Y
lyoke ||| will be actuated downwardly to permit
Fig. 5 shows a modified type of tensioning de
worm gear 93, as well as rod 94 to move in either
vice which employs power means for placing
the pump end of the transmission on stroke‘in
either direction to cause the associated winch
to wind in or pay out cable. As shown therein,
an electric motor 9|’ drives the hydraulic trans
mission 90’. The drive shaft 92’ of transmission
90' has keyed thereto a worm gear 93’ adapted
for axial movement which meshes with the worm
wheel 14" >of the differential gear. Worm gear
-pump P2 and motor M2, and gears 59, 60, 64 93’ has secured thereto one end of a rod 94' which
and 65, and bevel gear 10 of the differential gear is journaled in the upper right hand wall 98’
of casing 96' .and in bracket 95’. Rod 94’ has
69 will also be held against movement.
Now let us assume that slack suddenly occurs secured thereto a collar |09’. which is adaptedv
to engage in the notches ||0' of a yoke lll', se
75. `-in the cable due to the action of the waves.
direction.
However, when sufficient cable has
been unwound from drum 32 to enable attach
ment of hook 34 to the airplane, lever 55 is then
65 swung to normal position shown in Fig. 4, at
which time latch 81 enters notch 08 of latch
plate 89 and the 'pump is then restored to neutral
position. Motor M2 will then remain at rest,
since an hydraulic lock is provided between
70
60
2,133,822:
cured tot the.' upper endl of a~ rod` |.|2’ journaledY
inlguiderbracket ||3f secured' to. casing 96'. A
coil spring 91’ encircles rod 94’ and extends be
tween worm gear 93' and the wall 98' of casingV
96.'. In this construction axial movement is im.
parted to Worm gear 93' by spring 91', and gear
14.’ inthe same manner as is done by> spring 91
and gear 14 respectively, of the construction
shown in Figs. 1 to 4. Yoke |||_’ is also similarly
10? adjusted to control the axial movement of worml
gear 93. In this construction instead of the
axial movement of worm gear 93" being directly
imparted to the sliding blocks |08’ of the pump
end of the transmission, said movement is im
parted to a Valve |'40'which controls the operation
of a pairY of fluid motors |4| and |42.
Valve |40 comprises- a‘casing V|43 having a
longitudinally extending chamber |44 centrally
thereof in which operates a valve member |45.
203 Casing- |43 has provided therein ports | 46, |41,
|48 and |49'- Valve member |45 comprises a pair
of interconnected Valvev heads |50 and |5|. A
valve rod |52 extends through the right hand end
of casing> |43 and has a laterally extending pin
|53 provided at the outer end thereof which en
gages in a slot |54 provided in the upper end of
a lever |55. Lever |55.y is pivoted intermediate
its ends to av bracket |561 extending upwardly
from casing 96’ and the lower end thereof is
305 provided‘with a yoke |51 which receives the upper
end- of collar |09’. It therefore is seen that any
axial movement imparted to gear 93' and rod 94’
is imparted to valve member |45.- Motors |4|
and |42 comprise cylinders |58 and | 59 having
pistons |60 and |6| respectively operating there
in.
The-piston rods |62 and |63 respectively of
pistons |60 and |6| are secured at one end there
of to the sliding'V block |08' of the pump end of
transmission 90'.' Secured to the upper end of
40? cylinder |58 is a second cylinder |64 having a
piston |55 operating therein. The lower en'd of
the piston rod |66 of piston |65 is adapted to
engage the upper end of piston |60. Cylinder
| 59~has secured to the lower end thereof a second
45. cylinder |61 having a piston» |68 operating there
in; The upper end of the piston rod |69 of
piston |68V is adapted tov engage the lower end
of piston |6|.
A- pipe |10 extends from port |46- of valve |40
to the upper end of cylinder | 58, and a branch
pipe |1~|« connects pipe |10iwith thev upper'.- end of
cylinder |64. A pipe |112' extends-from port |48V
of valve |40 to the lower'end ofl cylinder |61, and
a branch pipe |13 connects- pipe- |12 to the lower
endof cylinder |59. A pipe l14-extends from port
|41» of'valve |40 to a small pump |15 mounted at
one end of the armatureshaft of .motor 9|".
chamber V| 44 thereof from: pump |15 tol pass
through said ports and enter cylinders |58, |59,
|64 and |61 through the piping connections pre
viously described. When this occurs equal pres
sures will be exerted at the upper and lower ends
of sliding blocks |08’ thereby retaining the same ,
in neutral position.
Now let us assume that yoke ||`|’ has been`
moved downwardly so that the extension |30’
thereon is moved out of engagement withcollar
|09', and that slack occurs in the hoisting cable..
Spring 91’ will now urge gear 93' to theA lefty
causing' lever> |55 to be actuated in a clockwise
direction by collar |09', thereby shifting valve
member |45 to the right. When valve member
|45 is so actuatedvalve head |50 willprevent the'
passage of ñuid from chamber |44 to port |48.
Fluid from chamber |44 now enters cylinders |58-
and |64 only through pipes |10 and |1|-, causing
pistons |60 to actuate sliding block |08’ down
wardly to place the pump on stroke. The motor
endof transmission 90' will now rotate worm
gear 93l which through the differential gearing
will actuate the Winch to Wind in cable, therebytaking up the slack therein. Fluid from cylinders
|59 and |61 will now ñow through branch pipe
|13, pipe |12, port |48, and into the left hand
end of chamber | 44. »A relief valve |86 is.- pro
vided at the left hand end of valve |40. This
valve is of usual construction andv comprises aV
normally seated valve member |81ihaving a valve
stem |88 secured theretowhich extends through
the central bore of. an adjustable plug |89, making
threaded engagement with the left hand> end of
the. casing of said cylinder.
extends between the inner end of plug |89 and 35
valve member |81. The tension of spring |90
may be adjusted by simply' rotating> plug- |89.
When the pressure at the left hand’ end of cham
ber |44 is suflicient to overcome the tension of
spring |90, the iluid from> cylinders |59 and- |61 40
will discharge through port |49, and thence flow
to makeup tank |16 through valve |86 and a.
pipe |9|.
Now let us assume that the cable of the'winch
is subjected to a predetermined load. Under such 455
conditions gearv 14', as previously described, will
actuate worm gear 93’ to the right against theV
action of spring 91', causing lever |55 to swing in -
a counterclockwise direction, thereby shifting
valve member |45 to theV left.. When this occurs 50?
fluid will ñow from central-chamber |44 through>
pipes |12 and |13 to cylinders |61 and' |59,- caus
ing sliding blocks |08’V to be actuated upwardly,
thereby reversing the dischargek of the- pumpl end
of transmission 90' which in turn causesA a' re
verse operation of' the motor end thereof. Worm
Pump |15 receives fluid such as oilfrom a makeup > gear 93’ will now operate in the'reverse direction
tank |16 through» a pipe |11'~ An adjustable to cause the winch to pay out cable. Fluid from
relief valve |18 is connected to pipe |14 by a cylinders | 58 and |64 will now flow through pipes
branch pipe |19, and a discharge pipe |80 con
|10 and |1| to the right hand end of chamber |44`
nects the lower endV of said valve with makeup of valve |40, thence through a passage |î92', lport
tank |16. Relief valve |1`8~ is of usual construc
|49, valve |86, pipe |9|, and into-makeup tank‘ |16.
tion and comprises a normally seated valve mem
When yoke | l I" is in the position shown in Fig;
ber’ |8| having a Valve stem- |82 which extends 5, the inner surfaces |29" ofthe extension |30'Y
through the central bore of a plug |83 making thereof engage the right hand side of collar |09", '
threaded engagement with the’lower end of valve thereby preventing axialmovemen't of rod 94’ and
|18. A coil spring |84- encircles valve stem |82 worm gear 93' tothe right. 'I'he device is now
and extends between Valve member |8| and the unable to be so operatedl as to 'cause the winch to
upper end of plug |83. Thus, by adjusting plug pay out cable. When yoke |||' is moved up
|83 the tension of spring |84 may be varied. Fig. wardly to its third position of adjustmenlgcollar 70 l
5 shows the parts in normal position at which
|09’ engages in notches | I0’ and as a result wormy
time it will be noted that ports |46 and |48 of gear 93', as well as rod 94' areheld against moveF
valve |40 are slightly uncovered by valve heads ment. Relief valve |18 operates to bypass ñuid
75.' |50f-an‘d |5|, permittingfluid entering the central
from pump | 15 _to> makeup tank |16 when the
5
2,133,822
-pressure in the hydraulic circuit exceeds the value
required to eiïectively control the operation of
transmission 90', thus preventing damage to the
apparatus. The function of valve |86 is to pre
vent undue leakage of fluid from the hydraulic
circuit. The tension of spring |90 in said valve is
so adjusted as to require but little effort to
unseat valve |81. Thus the pressure at the ends
of valve member 4|45 will not be suñiciently great
to counteract, to any material degree, the axial
movement of gear 93'.
While the embodiments herein described are
tioned transmission for controlling the operation
admirably adapted to fulfill the objects previously
stated, it is to be understood that the invention
is not to be limited thereto, since it may be em
bodied in other forms, all coming within the
scope of the claims which follow.
What is claimed is:
of the latter, said automatic means including an
axially movable member, and mechanism mov
able tol three positions of adjustment for con
trolling the operation of said member, said mech
anism when moved to one position of adjust
ment permits said member to move axially in
either direction from. a vneutral position, when
moved >to a second position of adjustment said
mechanism permits movement vof said member
in one direction only from‘said neutral position,
and when moved to a third position of adjust
ment said mechanism locks said member against
`movement `in'- either direction.
5. In a device Aof the class described, the com
bination'rofl a' Winch, including a cable winding
,
1. In a device of the class described, the com
bination with a winch, including a cable wind
drum., power ‘means for actuating said drum to
wind in or pay out cable, differential gearing
4disposed >between said winding drum and power
ing drum, of an hydraulic transmission for actu
means, a second power'means operatively con
nected to said differential gearing, automatic
means disposed between said gearing and said
second mentioned power means for controlling
between said drum and transmission, a second the operation of the latter; said automatic means
hydraulic transmission for operating said wind
including a wormgear operatively connected to 525
ing drum independently of said first mentioned said differential gearing and adapted for axial
hydraulic transmission, means operatively con
movement in either direction from a neutral po
necting said second hydraulic transmission to sition, adjustable manual mechanism for con
said differential gearing, and means actuated by trollingA the axial movement of said worm. gear,
said last mentioned means for controlling the movable to'three positions of adjustment, said
operation of said second hydraulic transmission. mechanism when actuated to one position of
2. In a device of the class described, the com
adjustment permits movement of .said worm gear
bination with a winch including a cable wind
in either direction from ya neutral position, when
ing drum, of an hydraulic transmission for actu
said mechanism is moved to ya second position of
ating said drum to wind in or pay out cable, dif
adjustment said worm gear is adapted for axial
35 ferential gearing disposed between said winding movement in one direction only from.V a- neutral
drum and hydraulic transmission, means for con
position, and when said mechanism is actuated to
trolling the operation of said transmission, a a third position of adjustment said worm gear
second hydraulic transmission for operating said is locked against axial movement in ‘said neutral
Winding drum, a member adapted for rotary and
at
ating said drum, differential gearing disposed
axial movement disposed between said hydraulic
second transmission and said dìiîerential gear
ing, and means actuated by said member for con
trolling the direction of rotation of said second
hydraulic transmission.
position.
'
'
’
'
.
6. In a device of the class described, the corn
binationof a winch, including a cable Winding
drum, power means for actuating said drum to
wind in or pay out cable, differential gearing
disposed` between said winding drum and power
3. In adevice of the class described, the com
bination of a winch, including a cable winding
drum, power means for actuating said drum in
means, including a- worm wheel, an hydraulic
transmission for actuating said winding drum in
either direction, diiîerential -gearing disposed be
for said hydraulic transmission, a worm. gear
tween said drum and power means, a second
power means operatively connected to said gear
50 ing for actuating said drum in either direction,
automatic means for controlling the operation
of said second power means, and control mecha
nism for said automatic means having three po
55 sitions of adjustment, said mechanism. when
actuated to one position permits movement of
said automatic means in either direction from a
neutral position to control the operation of said
second mentioned power means, when moved to
60 a second position, said mechanism permits move
dependentlyv of saidpower means, a drive shaft
mounted for axialimovement keyed tov said drive
shaft and meshingwith said worm wheel, where
by rotation of :said-shaft causes rotation of said
worm gear and-worm Wheel, mechanism opera
tively connecting said'wórm gear to said trans
mission whereby axial movement of said gear 555
controls the> operation of said transmission,
means for controlling the axial movement of saidworm gear comprising a latch member, a rod
secured to said worm gear having a collar there
on adapted to engage said latch member, said 60
latch member being adapted for three positions
ment of said automatic means in one direction
of adjustment, when moved to one position of
only from said neutral position, and when moved , adjustment said latch member is out of engage
to a third position said mechanism locks said ment with said-"collar thereby permitting said
automatic means against movement in either di
worm gear tomove in either direction from a 65
65 rection.
neutral position, when moved to a second posi
4. In a device of the class described, the com
bination of a winch, including a cable winding
drum, an hydraulic transmission for actuatin-g
said drum to wind in or pay out cable, differen
70 tial gearing disposed between said winding drum
and hydraulic transmission, means -for controlling
the operation of said transmission, a second hy
draulic transmission operatively connected -to
said differential gearing, automatic means dis
75 posed between said gearing and said second men
tionof adjustment said latch member permits
movement of> said worm gear in ,one direction
only from a neutral> position, and >when moved
to a third position of adjustment said latch 70
member engages saidV collar Yto lock said worm
gear in neutral position, resilient means for actu
ating said worm gear inV one- direction, and
means operating on said worm Wheel for actuat
ing said worm gear axially in the reverse direc 75
r6
2,133,822
. tion against the faction -of said iresilient means
>when va `predetermined .load is imposed .upon .said
cable.
`
7. In a device foir fthe class described, the com.
bination of a winch, including :a ,cable winding
drum, means vfor actuating :said :drum to :wind
_in or pay out cable, a .second .actuating means
Yadapted to :operate :said drum independently of
said first mentioned .actuatingimeana and .auto
ving va worm gear operatively connected to said
differential gearing and adapted for axial move
ment in either direction from a neutral position,
~Iiuid .pressure means operatively connected to .
:said second mentioned power means, a valve con
trolling the operation of said iluid pressure
means, and means voperatively connecting said
matically operable :fluid pressuremeans for con
valve to said worin gear.
trolling the operation of said second :actuating
13. In a device of the class described, the com
bination of a winch including a cable `winding
drum., power means for actuating said ¿drum to
means.
~
'8. Ina :device roi î.the .class described, ,the .com
bination of a winch including a cable -winding
15 drum, `means for actuating ¿said .drum to wind in
or pay out cable, idifEerentia-l .gearing `between
'said „drum 'and actuating means, a :second actu
ating means «operative'ly :connected to said dif
ferential gearing and adapted‘to ¿operate .said
'20 drum Yindependently @of :said <ñrst mentioned Kactu
ating means, 'and automatically ¿operable fluid
pressure means *for .controlling the :operation .of
.said second 'actuating means.
9. In a 'device of the .class -rìescribe.d, the 'com
Vbination of :a winch, including >a ¿cable winding
drum, means tfor actuating said drfum to wind in
or pay out cable, zdiiîeren'tial @gearing :disposed
between said tdrum and :actuating means, an hy
draulic transmission :operatively ¿connected Ato
.30 said differential »gearing fand adapted to actuate
said drum independently of fsaid actuating
means, and automatic means v.for ¿controlling fthe
operation of -sai‘d hydraulic transmission.
10. Ina device »of the v.class described, the com
rbination of a twinch, :including a cable Ywinding
drum, means yfor actuating .said fdrum :tof-Wind in
or pay out cable, `differential Igearing .disposed
vbetween vsaid V»drum and actuating means, 'an `hy'draulic transmission operatively lconnected to
said differential gearing and adapted to 4actuate
said drum :independently of rsai'd actuating
means, and automatically operable nuid ,pressure
lmeans 'for controlling Ithe operation ¿of :said hy
draulic transmission.
45
‘tion of the flatter, said automatic means includ
>
’
‘
11. Ina device ofthe class rdescribed, the com
.bination of ia winch including :a cable winding
drum, means_ior actuating said drum to wind in
or pay vout cable, differential ggea-ring v'disposed
Abetween .said Winding :drum :and actuating
50 means, ian hydraulic transmission operatively
connected to said :differential gearing :andzadapt
ed to `operate vsaid drum .independently >of said
actuating means, automatic means :disposed 'be
tween said gearing and »said xvhydraulic :transmis
.55 sion for controlling 'the operation :ofv‘the latter,
said automatic means including aan .axially mov
able member, fa ‘valve -,operatively fconnected to
said member, ?Huid ipressure lmeans operatively
connected Ato rsaid transmission 4¿for `_conditioning
60 the same ~for operation 1upon vadjustment of v»said
valve, ‘and additional 'iluid pressure means «con
‘trolled by said valve ,for actuating said trans
mission 'to neutral when fsaid axially movable
member .assumes >a neutral fposition.
85
l2. vIn a _device of the class described, the vcom
bination of a winch .including .a :cable winding
drum, power means for .actuating :said drum .to
windfin orzpayfout cablefdiiîerentia'l gearing dis
posed between said winding 'drum and power
means, a second'power means operatively con
nected to :said diiîeren'tial gearing and adapted
tooperate-said winch >‘independently-of said first
mentioned power means, vautomatic means dis
posed between said :gearingrand said second :men
7.5 tioned power means v¿or controlling ‘.the .opera
’
<Wind in or pay out cable, differential gearing dis
.posed between said winding drum .and power
means, a second power means operatively con
:nected to `said differential -gearing and adapted
to operate said winch independently of said `iirst
mentioned power means, automatic means dis
posed vbetween said gearing and said 'second men
tioned power means for controlling the opera
tion ofthe latter, said automatic means includ
yingaworm. gear'operatively connected to said dif
ferential gea-ring and adapted for axial move'
`ment i-n either direction from a neutral position,
fluid pressure means operatively connected toä
said second mentioned power means, a valve con
trolling the operation of said fluid pressure
means, means operatively connecting said valve
:to .said worrnggear, and means for controlling the
4axial movement of said worm gear.
»14. In adevice of ther-class described, the com
bination of a winchV including a cable winding
» rum, power ‘means for actuating said drumV to
ywind 'in ~or pay out cable, differential gearing
-disposed >beneath said winding drum and power 35
means, a -second power means ‘operatively Acon
-nected to »said-differential gearing and adapted
to operate «said winch independently of said ñrst
mentioned power means, automatic Vmeans dis
«posed -between said gearin-g'and said second men
.tioned power means for controlling the opera
tion of the latter, said automatic `means .includ
ing -a worm gear 4operatively connected :to vsaid
diiiîerential gearing and adapted forfaxial move
ment -in either :direction from a neutral position,
`iiuid Vpressure -means operatively connected to d5
said second mentioned power-means, a valve con
trolling the operation of said iiuid pressure
means, means operatively connecting-said valve
.to -said worm gear, and adjustable means -çfor
controlling the axial Vmovement of said -worm 60
gear, Vsaid last mentioned-means when moved
to one position lpermits -axial movement of said
.worm Vgear in’either direction from a neutral po
sition, when moved to a second position of ad
justment said vmeans permits movement of said
worm gear in one direction only from said neu
tral position, and -when moved to a Vthird posi
tion of vadjustment said meanslocks said worm
gear Iin -neutral position.
80
15. «In a device of the class described, the com.
bination -of a winch including a cable winding
drum, means for actuating said drum to wind
in or pay out cable, ¿differential `gearing >disposed
between said winding drum and actuating means,
an `hydraulic transmission operatively connected
vto saidV diiïerential gearing and adapted to .op
erate said drum independently of said actuat
ing means, :automatic Ameans disposed .between
said gearing'and ‘said hydraulic transmission -for
controlling the operation of the latter, said au
tomatic means including an axially movable
member, a control valve operatively connected to
said member, iluid vpressure means .operatively
connected `to .said transmission for `conditioning
65
7
2,133,822
the same for operation upon adjustment of said
valve, additional fluid pressure means controlled
by said valve for actuating said transmission to
neutral, when said axially movable member as
sumes a neutral position, and a pump operatively
19. Ina device of the class described,'the com
bination with a winch including a cable winding
drum, of power means for actuating said drum
to .wind in or pay out cable, vgearing disposed be
tween said winding drum and said power means,
connected to said control valve.
16. In a device of the class described, the com
bination of a winch including a cable Winding
drum, power means for `actuating said drum to
wind in or pay out cable, differential gearing
an hydraulic transmission for operating said
winding drum independently of said power
means, a member adapted for axial movement
disposed between said winding drum and power
means, a second power means operatively con
nected to said diiïerential gearing and adapted
to operate said winch independently of said ñrst
operatively connecting said hydraulic transmis
sion to said gearing, stroke adjusting means con 10
necting the pump end of said transmission with
said member, resilient means for shifting said
member-in one direction to cause operation of
said hydraulic transmission in one direction, and
mentioned power means, automatic means dis
posed between said gearing and said second men
tioned power means for controlling the operation
said gearing engaging said member and being
adapted to shift the latter in the reverse direc
tion to effect a reverse operation of said hydraulic
of the latter, said automatic means including a
worm gear operatively connected to said diiiïer
ential gearing and adapted for axial movement
in either direction from a neutral position, fluid
pressure means operatively connected to said sec
ond mentioned power means, a valve controlling
the operation of said ñuid pressure means, means
transmission.
20. In a device of the class described, the com
bination with a winch including a cable winding 20
drum, of power means for actuating said drum
to wind in or pay out cable, gearing disposed be
tween said winding drum and said power means,
operatively connecting said valve to said worm
gear, and a pump operatively connected to said
valve.
17. In a device of the class described, the corn
bination of a winch including a cable winding
drum., power means for actuating said drum to
wind in or pay out cable, diñerential gearing
disposed between said winding drum and power
means, a second power means operatively con
nected to said differential gearing and adapted
to operate said winch independently of said first
mentioned power means, automatic means dis
posed between said »gearing and said second men
tioned power means for controlling the operation
of the latter, said automatic means including a
40 worm gear operatively connected to said differ
ential gearing and adapted for axial movement
in either direction from a neutral position, iiuid
pressure means operatively connected to said
second mentioned power means, a valve control
ling the operation of said fluid pressure means,
45 means operatively connectin-g said valve to said
worm gear, a pump operatively connected to said
valve, and a relief valve in the circuit between
said valve and pump.
18. In a device of the class described, the com
50 bination of a winch including a cable winding
drum, means for actuating said drum to wind
in or pay out cable, diiîerential gearing disposed
between said winding drum and actuating means,
an hydraulic transmission operatively connected
55 to said differential gearing and adapted to op
erate said drum independently of said actuating
means, automatic means disposed between said
gearing and said hydraulic transmission for con
60 trolling the- operation of the latter, said auto
matic means including an axially movable mem
ber, a control valve operatively connected to said
member, fluid pressure means operatively con
nected to said transmission for conditioning the
65 same for operation upon adjustment of said
valve, additional fluid pressure means controlled
by said valve for actuating said transmission to
neutral, when said axially movable member as
sumes a neutral position, a pump operatively
70 connected to said control valve, a relief valve
in the circuit between said pump and control
valve for bypassing fluid when the pressure there
in exceeds a predetermined value, and an addi
tional relief valve operatively connected to said
75 control valve.
an hydraulic transmission for operating said
winding drum independently of said power 25
means, a member adapted for axial movement
operatively connecting said hydraulic >transmis
sion to said gearing, stroke adjusting means con
necting the pump end of saidftransmission with
said member, resilient means for shifting said 30
member in one direction to cause operation of
said hydraulic transmission in one direction, said
gearing engaging said member and being adapt
ed to shift the latter in the reverse direction to
eiîect a reverse operation of said hydraulic trans
mission, and means controlling the operation of
said
member.
,
35,
'
21. In a device of the Aclass described, the com
bination with a winch including a cable winding
drum, of power means for actuating said drum 40
to wind in or pay out cable, gearing disposed
between said winding drum and said power
means, an hydraulic transmission for operating
said winding drum independently of said power
means, a driving member adapted for rotary and
axial movement operatively connecting said hy
draulic transmission to said gearing, stroke ad
justing means operatively connecting the pump
end of said hydraulic transmission to said mem
ber, resilient means for shifting said member in 50
o-ne vdirection to eiïect operation of said trans
mission in one direction, said gearing engaging
said member and being adapted to shift the lat
ter in the reverse direction to effect a reverse
operation of said transmission, and means for 55
controlling the axial movement of said member.
22. In a device of the class described, the com
bination with a winch including a cable wind
ing drum, of a'n hydraulic transmission for actu
ating said drum to wind in or pay out cable, 60
gearing disposed between said winding drum and
hydraulic transmission, means for controlling the
operation of said transmission, a second hy
draluic transmission for operating said winding
drum, a member adapted for‘rotary and »axial 65
movements operatively connecting said second
transmission to said gearing; stroke adjusting'
means for the pump end of said second hy--
draulic transmission operatively connected to
said member, resilient means for actuating said 70
member in one direction to effect operation of 1
said second transmission in one direction, means
operated by said »gearing for actuating said mem
ber in the reverse direction to effect a reverse
operation of said second hydraulic transmission,
8
’
2,133,822
and. means for controlling the axial movement
of said member.
23. In a deviceof the class described, the com
bination with a Winch including a cable winding
drum, of actuating means for said drum, gear
ing operatively connecting said drum and actu
ating means, additional means operatively con
nected to said gearing and adapted to operate
ating means, adjustable means for controlling
the speed and direction of operation of said ad
ditional means, a shiftable member operatively
connected to- said gearing, and means connect
ing said shiftable member to said adjustable
means, whereby any movement of said shiftable
member is imparted to said adjustable means.
said Winding drum independently of said actu
ROBERT C. LAMOND.
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