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Патент USA US2412508

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Dec.v 10, 1946.
n 2,412,508
Filed Dec. 2, 1943
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Patented Dec. 10, 1946
Harry M. Jensen, Chicago, Ill.
Application December 2, 1943, Serial No. 512ì,534
8 Claims. (Cl. 242-54)
The present invention relates to an improved
portable power unit for reeling heavy cable or
heavy wire. The invention has its greatest field
of utility when employed to drive the large reels
invention will be apparent from the following
detailed description of two preferred embodi
ments thereof.
In the accompanying drawings illustrating
on which lead covered cable is wound.
lead covered cable is typically represented by
telephone cable, or electric distribution cable,
Cl such embodiments:
Figure 1 is a side elevational view of my im
proved power cable reeler, showing it connected
to a cable reel in the act of reeling cable;
or high voltage transmission cable. Such lead
Figure 2 is a similar view of the otherside of
covered cable is often wound on reels as large
as eight feet in diameter, and a fully loaded reel 10 the unit, on a larger scale, showing how the drive
arm can be swung to diiferent positions;
of this size may weight as much as 14,000 pounds.
Figure 3 is a plan view with the cover removed,
In addition to the great Weight of the loaded
showing the operating mechanism of the ma
reel, the stiffness of the lead covered cable ag
gravates the problem of winding the cable on orÑ
off a large reel by manual effort. Because of
the weight of the reel and the stiffness of the
Figure 4 is a schematic diagram of the train
of power transmission to the reel driving head
and to the coiler;
Figure 5 is a fragmentary side elevational View
of a driving yoke which is used when the reel is
cable the job of winding cable on or oiî a large
reel by manual effort alone may often require
as many as six to ten men. This problem of
reeling and unreeling heavy cable occurs con 20 mounted on a square shaft;
Figure 6 is a side elevational View of the driv
stantly in connection with running cable into
ing yoke which is employed when the reel is sup
and out of street manholes, into and out of un
ported on a square shaft;
derground ducts, winding cables from one reel to
Figure 7 is a vertical sectional view taken on
another, and also in connection with the reeling
and handling of submarine cables used in mined 25 the plane of the line 'I-'I of Figure 5, showing
the driving head connected to the reel through
the above yoke and square shaft;
The general object of the present invention
Figure 8 is a horizontal sectional view taken
is to provide a portable power-driven reeling
on the plane of the line 8-8 of Figure 5, show
unit for transmitting a power drive to these large30 ing the swiveled mounting which permits the
cable reels.
driving arm to have vertical swinging movement;
Another object of the invention is to provide
Figure 9 is a side elevational view, with the
such a machine characterized by a swiveled drive
arm through which the power drive is trans
cover broken away, showing a modified construc
tion of reeling unit which is powered by a gaso
mitted from the reeling unit to the reel, this
arm being swiveled to the reeling unit for verti 35 line engine;
Figure 10 is a plan View of the latter embodi
cal swinging movement so that the swinging end
of said arm can be moved upwardly or down
wardly to different heights for establishing driv
ing connection with cable reels of widely differ
ent diameters.
ment; and
Figure 1'1 is a detail view of the suction actu
ated clutch control mechanism used in this en
40 gine driven embodiment.
Referring to Figures 1 and 3, I have illustrated
a conventional cable reel, indicated in its entirety
at II, on which a typical lead covered cable I2
improved foot control which can be situated in
is wound. My improved power unit for driving
any desired position several feet away from the
power driven reeling unit and which enables the 45 reels of this type is indicated in its entirety at
operator to control the starting and stopping of
I3. Such unit comprises a main frame I 4 which
Another object of the invention is to provide
a power driven cable reeler characterized by an
the reel while standing in a position which en
ables him to guide the path of the cable or to
watch the cable while the latter is entering or
can be in the form of a conventional platform
skid having supporting skids or brackets I5 ex
tending down from each of the four corners of
50 the platform. The platform is thus normally
leaving a manhole, duct, etc.
Another object of the invention is to provide
supported in an elevated position above the
a machine of the above general description with
ground so as to enable a conventional lift truck
a power-driven collapsible coiler for coiling line
to be run in endwise under the platform. In this
conductors and the like.
manner the lift truck can be actuated to raise
y Other» objects, features, and advantages of the 55 the power unit I3 to a position which clears the
skids I5 from the ground, thereby enabling the
power unit to be readily wheeled to another posi
tion where it can be lowered to place the skids
I5 back upon the ground in close proximity to an
other cable reel which is to be driven. The angle
- iron frame I4 of the power unit carries a plu
rality of transverse channel bars I8 to which
the various parts of the power unit are bolted.
In the _embodiment illustrated in Figures 1, 2,
and 3, the source of power consists of an electric
motor 2| 'which may be either of the alternat
ing current type or the direct current type, de
pending upon theI source of supply. The arma
ture shaft of this motor carries a multiple groove
pulley 22 which transmits a drive through a plu
rality of V-belts 23 to a large sheave 24. This
may be provided for shifting the position of the
assembly 38, 4G, 42 to adjust the tension of the
driving chain 37, this adjusting means being
shown as comprising bolts 46 carried by the
mounting plate and passing through slots 41 in
the angle bars 39a (Figure 5).
Referring to Figure 1, in establishing a driving
connection between the driving unit I3 and the
cable reel I I, the driving unit I3 is picked up on
a wheeled lift truck, and the unit I3 is then
wheeled into position adjacent to the side of the
reel II, substantially as illustrated in Figure 1.
rï'he swivelled power transmitting arm 39 is now
swung around the axis of the drive shaft 36, and
the apparatus is maneuvered to place the axial
opening 44 in the hollow spindle 43 in alignment
with the axial opening II’ in the reel I I, where
large sheave is mounted on a shaft 25 constitut
upon the reel supporting shaft 45 is then slid
ing the power input or drive shaft of a selective
endwise through the axial opening II’ in the
speed transmission mechanism 26. This trans
mission unit may be of any desired type capable 20 reel and through the hollow spindle 43, with a
portion of the shaft extending out beyond the
of giving the range of speeds which are desirable
spindle. The driving arms 38a of the driving
for- driving> the cable reel. In the exemplary em
bodiment illustrated I have employed a conven
tional four-speed automobile transmission of a
type heretofore used on trucks of a well-known
make. Because such a transmission unit is very
well known, there is no need of describing it in
detail. Four selective forward speeds and one
reverse speed are obtainable through proper ma
head are now brought up into proximity to or
against the adjacent side surface of the reel II,
these arms being provided with slots 38h for re
ceiving the driving bolts 48, 48. These bolts are
then threaded into separate driving sleeves which
are inserted into standard driving holes normally
provided in the face of the reel, thereby estab
nipulation of the gear shift lever 28 projecting 30 lishing a positive driving connection between the
driving arms 38a and the reel. Lifting jacks 50
upwardly from the transmission mechanism.
are now placed at each side of the reel with their
The power output shaft 29, projecting from
lifting yokes or saddles 5I engaging under the
the rear end of the transmission mechanism
projecting ends of the reel supporting shaft 45.
26, is connected through a universal joint 3|
with a propeller shaft 32 which, in turn, is con
nected through another universal joint 33 with
the power input shaft 34 entering a worm type of
speed reducing gear unit 35. This worm gear
speed reducer 35 which I have employed in one
35 The jacks 55 are then actuated to raise the
reel Il a sufficient distance so that it will clear
the ground and rotate freely. The ability of the
power transmitting arm 39 to swivel around the
axis of the driveshaft 35 readily accommodates
embodiment of my invention affords a speed re 40 this lifting movement of the reel II, and also
readily accommodates the establishment of a
duction of 17 to 1, but it will be understood that
driving connection with reels of different sizes.
other ratios may be employed and other types
of speed reducing units may also be employed.
The power unit I3 may be left on the Wheeled
Projecting from the output side of the speed
lift truck during the operation of driving the
reducer 35 is the drive shaft 36 which is adapted
to transmit a drive to the cable reel. The drive
is transmited from said drive shaft 35 through
a drive chain 37 leading out to a driving head 38
reel II, or the lift truck may be removed from
under the power unit after the unit has been
mounted in the vouter end of a vertically swivel
ling drive arm 39. The inner end of the driving
chain 31 passes over a sprocket wheel 4I mount
been established with the reel through the driv
ing head 38 and bolts 48. In the operating rela
tion illustrated in Figure 1, the reel II is shown
as'reeling cable I2 up through a manhole M in
a street or paving, but it will be understood that
this is merely exemplary of one of many situa
edon the shaft 36, and the outer end of said
placed in proper position relatively to the reel
and preferably after the driving connection has
chain passes over a sprocket wheel 42 which is
secured to the driving head 38. The swivelled
power transmitting arm 33 is preferably made
up of two spaced angle bars 39a, 39a. which en
close the chain 31 and sprockets 4I and 42'so as
to function as a guard for these elements. The
tions in which it may be desired to transmit a
power drive to a cable reel.
In some instances the reel II may be arranged
to be driven by a square shaft 45a, as shown in
swiveled ends ofthe bars 39a are welded or other~
Figure '7. -In such case either the openings II’
wise secured to bearing members 39h, 39e (Fig 60 in the reel are of square formation or end col
lars 52, provided with square holes, are secured
ure 3) which have swiveled mounting on the drive
to the ends of the reel for receiving the square
shaft 36 for enabling the power transmitting arm
portion 45a of the shaft. Each end of this square
39 to be swung to different angular positions
shaft is formed with a cylindrical portion 45h
around the axis of the shafts 36. The outer ends
of the angle bars 39a. are joined by a transverse 65 capable of passing through the cylindrical open
ing 44 of the driving head sleeve 43 so as to have
bar 39d -welded thereto, and mounted for sliding
rotatable bearing mounting on the lifting yokes
adjustment between said angle bars is a bearing
or saddles 5I of the lifting jacks 5D. Driving
plate 39e to which is secured a horizontally ex
engagement between the driving head 38 and the
tending bearing boss 39f (Figures 5 and 7) . The
reel is established through a driving yoke 53 il
driving head 38 and outer sprocket 42 are mount
lustrated in Figure 6. This yoke has a square
ed on the outside of a hollow spindle 43 which is
hole 53a. for receiving the square portion 45a
journaled in the bearing boss 39j. The hollow
of the shaft. Lugs 53h projecting from the arms
driving head 33 and hollow bearing spindle 43
provide a through opening 44 for receiving a reel
of the yoke engage in the slots 38h of the driv
supporting shaft 45. If desired, adjusting means 75 ing arms 38a for transmitting the driving torque.
Cap screws 5l! pass through the slots 38h and
thread'into tapped holes 53o in the yoke 53 for
holding the yoke against disengagement from the
¿i9 is preferable because such power take-off has
the'beneflt of the speed reduction afforded by the
belt drive from the motor 2l. The operation of
the coiler 15 is, of course, subject to starting and
The stopping and starting of the drive to the Ui stopping through control exercised by the foot
switch 55 which may be placed in position so
reel H is preferably placed under the control of
that the operator can manipulate this foot switch
a portable foot switch 55 which can be. placed
at the same time that he is guiding the winding
at any desired position relatively to the reel Il
and power unit i3. In Figure 1 I have illustrated
of the conductor on the coiler. The coilercan
also be reversed through the reversing switch 65.
this foot control switch 55 in proximity to the
manhole M where the operator would stand so
The electric motor, transmissions, and various
driving arms.
as to be able to observe the movement of the
cable upwardly out of the manhole. As best
drives of >the power unit I3 are preferably en
closed within a removable cover 90 which is
shown in Figure 3, this foot switch comprises
adapted to set down over the supporting frame
i4 of the power unit. The selective speed gear
a base portion 53 and a treadle member 51, the
treadle being connected to electrical contacts dis
posed within the base portion 56 and so arranged
shift levers 23 and 85 project upwardly through
that the contacts are closed when the treadle is
power transmitting arm 39 is not in use it can
suitable openings in this cover 90.
When the
be folded back into a position where the outer
depressed. A iiexible two-wire extension cord 59
extends from the foot switch 55 to a prong type 20 end thereof rests on the cover, as indicated in
dotted lines in Figure> 2, thereby reducing the
of plug 5l which is adapted to be plugged into
overall dimensions of the unit for more compact
a receptacle 62 mounted on the frame of the
power unit. This receptacle is connected to an
Referring now to the embodiment illustrated
automatic primary-resistor starter 55 which gov
in Figures 9, 10 and 11, this modiñed form of
erns the energization of the electric moto-r 2l.
unit differs principally from the previously de
This starter control also preferably includes a
suitable reversing switch 56 for causing the mo
tor 2l to run in a reverse direction, the opera
tion of the unit after the reversed connections
have been established still remaining under con
trol of the foot switch 55. The motor 2| is ordi
narily a. three-phase motor, and hence the re
versal thereof can be easily accomplished by
shifting phases with respect to the stator or rotor,
scribed unit in that an internal combustion en
gine 9! has been substituted for the electric mo
tor 2l , thereby making the power unit adaptable
to- use in situations where a supply of current
is not available. In this embodiment the start
ing and stopping of the drive to the cable reel
is also controlled through the manipulation of a
foot switch 55, but in such embodiment the foot
switch is arranged to electrically control a Vac
or by using other well known reversing expe
uum responsive clutch which governs the trans
dients. The ability to reverse the electric motor
mission o-f power from the internal combustion
2| enables the full range of selective speeds of
engine to the selective speed transmission unit
the four speed transmission 25 to be utilized for
driving the reel l l in either direction. The sup
25, as I shall presently describe.
ply connection to the power unit is effected 40
The internal combustion engine 9| may be of
through a ñexible supply cable il (having three
the single cylinder air-cooled type developing
conductors when supplying three phase current),
this cable connecting through a detachable fe
male plug i2 which is adapted to be received
within a prong receptacle '13 mounted on the
unit, such prong receptacle being connected with
the starter control S5.
anywhere from four to ten horsepower. The
engine shaft carries a multiple groove pulley 22
which transmits a drive through a plurality of
V-belts 23 to a large sheave 2li', which is pref
erably mounted for free rotation on roller bear
ings carried by the power input shaft 25 of the
That embodiment of my improved power unit
illustrated in Figures 1, 2, 3, and 4 also com
prises a power driven coiler 15 for ceiling line
conductor and the like. This coiler is located
at any convenient point on the machine, pref
erably at the end opposite to the swivelled power
transmitting arm 33. The coiler is of the well
selective speed transmission mechanism 2S. This
known collapsible type which can be collapsed
for removing the coil of wire'therefrom after
the coiling operation has been completed. The
u affording four forward speeds and one reverse,
large sheave 24’ is adapted to transmit rotation
to Said power input shaft 25 through the medium
of a control clutch 33 which responds to the
manipulation of the foot switch 55, as will be
presently described. The :transmission unit 26
is preferably of the conventional automotive type
as described of the preceding embodiment. The
power output shaft 29, leading from this trans
Inission, is connected with the power input shaft
coiler can be removed and replaced as desired,
34 of the speed reducing worm gear unit 35,
and to this end it is secured to a stub shaft 76
‘ which is adapted for detachable mounting in a 60 which has been previously described. This worm
gear unit 35 transmits rotation through drive
driving socket 'il where it can be secured by a
shaft 36, sprocket 4l, chain 31, and sprocket 42
set screw 'F3 (Figure 3). The driving socket Tl
to the driving head 38 rotatably mounted in the
is carried on the end of a drive shaft 19 carrying
swinging outer end of the swivelled power trans
a large sprocket wheel 8l . A chain 82 runs from
mission arm 39, substantially as described of
this large sprocket wheel down to a sprocket
the preceding embodiment.
pinion 83 mounted on the output shaft B4 of a
The control clutch 93 is preferably of the fric
selective speed transmission mechanism 85, typ
tion type in order to obtain a gradual smooth en
ically represented by a three speed automotive
gagement, although it will be understood that
transmission, these speed selections being made
through the usual gear shift lever 85. The input 70 other types of clutches may be used if desired,
such as a hydraulic clutch. The clutch engag
shaft 8i of the transmission 35 is connected
ing parts are arranged to respond to the axial
through a suitable coupling 33 with a power
shifting movement of a conventional clutch shift
take-off shaft 89 leading from the first mentioned
transmission 25. This latter arrangement of
ing collar (not shown) which is embraced by and
transmitting the drive from the power take-off 75 operatively connected with a shifting fork or ì
the clutch engaging position of the vacuum con
trol unit. When the slide valve II2 is shifted
to the right, the right hand end of the cylinder
is connected to suction through port |23 and pas
sageway |24, and the left hand end of the cylin
yoke 96 pivoted at its lower end at 91 (Figure 9).
An operating lever 90 extends upwardly from the
shifter yoke 96 and is pivotally connected at 99
with a clevis |0| rigidly secured to the closed end
of a shifting vacuum cylinder |02. This vacuum
cylinder is part of a complete vacuum responsive
operating unit |00, preferably of the construc
der is connected to atmosphere through port |22
and space |21. This condition causes the cylin
der to shift to the left, such being the clutch re
tion recently made by Bendix for the vacuum op
erated gear shift system used on cars of a, popu
leasing position.
The slide valve H2 is shifted from one posi
tion to the other through the motion of a valve
actuating lever |36 which is mounted to have
rocking movement between the two side flanges
tween said closed end and head is a piston |04.
or the vertical frame channel III. The lever
The piston is secured to the end of a piston rod
|95 which passes out through a guide boss |06 15 |35 is pivoted on a pin |31 extending between
the flanges of said channel, and the upper end
extending from the head |03- 'I‘he outer end of
of said lever is pivotally connected at |30 to a
the piston rod carries a relatively long clevis |01
clevis ISG which is adjustably connected through
which has a transverse pivot pin |08 passing
a swiveled nut |59 and threaded rod |40’ to the
therethrough, this pivot pin also passing through
the sides of a vertically extending frame channel 20 end of the suction supply tube IIS for shifting
the valve. A tension spring |4| (Figure 9) is
I I I for establishing a stationary supporting pivot
connected between the web of the channel III
for this end of the vacuum operated unit |00.
and the lower end of the lever tending to swing
Vacuum or suction is adapted to be connected
the lever in a clockwise direction, thereby nor
selectively to either end of the cylinder |02 by a
mally tending to hold the slide valve |I2 shifted
slide valve II2 reciprocating within the piston
lar make, As shown in Figure 11, the other end
of this vacuum cylinder |02 is also closed by a
head |03, and mounted within the cylinder be
to its right hand position. Pivotally connected
|04 and piston rod |05, this slide valve admitting
to said lever between the fulcrum pivot |31 and
suction to the right hand end of the cylinder and
the spring IGI is a link |153 which is connected
atmosphere to the left hand end in one shifted
to the shiftable core of a solenoid |55. This sole
position of the valve, and then admitting suction
to the left hand end and atmosphere to the right 30 noid is connected in circuit with the remote con
trol foot switch 55, such circuit being energized
hand end in the other shifted position of the
by the storage battery |41. The operating rela
valve. This valve action in the above Bendix
tion is such that when the operator steps on the
device is old and well known and need not be
foot switch 55 the solenoid |65 is energized,
described in detail. Suñice it to say that in the
thereby swinging the lever |35 in a counter
diagrammatic arrangement illustrated, the suc
clockwise direction and shifting the slide valve
tion is conducted from a suction storage tank I I4
H2 to its left hand position. This admits suc
through a flexible tube |I5 which connects with
tion to the left hand end oi the cylinder |02
a downwardly turned supply tube | I6 which joins
and causes the cylinder to shift to the right for
with a tubular valve stem I I1, the latter carrying
the slide valve |I2, as shown in Figure 1l. The 40 engaging the clutch, as previously described.
When the operator takes his foot 01T the foot
valve is formed with two annular cut-olf rings
switch 55 the solenoid |45 deenergizes, the slide
||8 and I I9 adjacent to the right hand end, and
valve I 2 shifts to the right, the cylinder |02
with a closure ring I2I adjacent to the left hand
shifts to the left and the clutch is disengaged.
Thus, the clutch is power actuated both to its
These three rings> have a snug sliding lit
within the bore |05’ of the hollow piston rod |05.
The cut-off ring I I8 is adapted to cooperate with
closed and opened positions, this being done with
a smooth graduated motion. The clutch is pref
erably of the type wherein the shifting or ac
tuating parts built into the clutch assembly go
a valve port | 22 in the form of an arcuate slot or
holes cut in the hollow piston rod |05 to the left
of the piston |04. The other cut-01T ring ||9 is
adapted to cooperate with a similar valve port 55) through a slight over-center motion or a slight
over the hump action just as the friction elements
engage in the clutch engaging operation. This
means that the clutch is then operative to remain
in effective engagement without the necessity of
|23 also in the form of an arcuate slot or holes
cut in the piston rod to the right of the piston.
The suction transmitted through the hollow valve
stem ||1 communicates through a passageway
|24 with the annular space |25 between the cut
off rings II8--I I9, An atmosphere venting pas
Ui - the vacuum cylinder .|02 exerting a heavy pres
sure through the clutch operating lever 98.
The vacuum stored in the storage tank IIll is
Valve past the cut-oli rings and opens laterally
obtained from the intake manifold or carburetor
or” the internal combustion engine 5| through tube
out into the annular space I 21 defined Within the
hollow piston rod |05 between the rings | I8 and 60 |59, a suitable vacuum check valve being inter
I2 I, Ports |28 open from this annular space out
posed in this suction connection to retain the
into a telescoping rubber boot or hood |29, and
vacuum stored in the tank` | Ul. The storage bat
tery |51 is charged by a generator |5| which is
the interior of this boot communicates with at
mosphere through the tube I 3| projecting from
shown as being driven from the shaft of clutch
the boss |06 of cylinder head |03. The far end 65 e3 through a belt |52 and belt pulleys |53 and
of the hollow piston rod is closed by a closure
although it will be understood that this
disk |32.
generator may be connected directly to the engine
It will be evident from the foregoing that when
crank-shaft. The charging system may be reg
the slide valve í|2 occupies the left hand posi
ulated by a voltage control unit |55. If desired,
tion illustrated, the left hand end of the cylinder
ie engine may be equipped with an electric
is connected to suction through port |22 and pas
sageway |24, and the right hand end of the cyl
While I have illustrated and described what I
inder is connected to atmosphere through port
regard to be the preferred embodiments of my
|23 and passageway. |26. This condition causes
invention, nevertheless it will be understood that
the-cylinder |02 to shift to the right, such being
such are merely exemplary and that numerous
sage |26 extends from the end face of the slide
modiñcations and rearrangements may be made
outer end of said swinging arm, a sprocket wheel
secured to said hollow spindle, a sprocket chain
therein without departing from the essence of
the invention.
trained over said sprocket wheels and extending
outward of said arm, and means for aligning the
I claim:
l. In -portable power driving apparatus for
driving a cable reel, the combination of jack
means for raising the cable reel to an elevated
cable reel with said hollow spindle and transmit
ting a drive to said reel comprising a reel shaft
extending through said hollow spindle and means
for connecting said hollow spindle with the reel.
5. In a portable power drive unit for driving a
driving position for performing cable reeling and 10 cable reel, the combination of a portable frame
adapted to be moved from place to place in the
unreeling operations, a power source on said
performance of cable reeling and unreeling op
frame, a drive shaft on said frame adapted to
driving position, a portable frame in proximity
to said reel while the latter is in said elevated
be driven from said power source, control means
erations, a source of power on said frame, an ad
justable drive arm for coupling said source of
for varying the speed of rotation of said drive
shaft, an adjustable drive arm swiveled to said 15 power with said cable reel, said drive arm being
swiveled to said frame for vertical swinging move
frame for swinging movement concentrically of
ment, a driving head rotatably mounted at the
said drive shaft, and a drive head rotatably
outer end of said arm, said driving head adapted
mounted in the outer end of said arm, driven
to be axially aligned with the reel supporting shaft
from said drive shaft, and operative to drive the
reel while the latter is supported on said jack 20 on which the reel is rotatably mounted, and a
driving yoke having a polygonal drive opening
therein adapted to be coupled to said driving head
and to establish driving engagement over a reel
supporting shaft of polygonal cross section.
6. In a portable Power driven reeling unit, the
position, a portable frame, a power source on 25
2. In portable »power drive apparatus for driv
ing a cable reel, the combination of portable jack
means for raising the cable reel to a free driving
said frame, a drive shaft on said frame, a variable
speed transmission mechanism interposed be
combination of a portable frame, an internal
combustion engine on said frame, drive means for
transmitting a drive from said engine to the reel,
a clutch for controlling the connection between
an adjustable drive arm swiveled to said frame 30 said engine and said drive means, suction respon
sive means governing the engagement of said
for swinging movement around the axis of said
clutch, and portable control means movable to
drive shaft, a drive head rotatably mounted in
different positions relatively to said reeling unit
the outer end of said drive arm for rotation about
for controlling said suction responsive means.
an axis substantially at right angles to said arm,
means connecting said drive shaft with said drive 35 7. In a portable power drive unit comprising a
cable reel, the combination of a portable frame
head, and detachable coupling means for coupling
adapted to be moved from place to place in the
said drive head with the end of the cable reel
performance of cable reeling operations, an inter
for driving the latter while the reel is supported
nal combustion engine on said frame, drive means
on said jack means.
tween said power source and said drive shaft for
varying the speed of rotation of said drive shaft,
3. In a portable power drive unit for driving a 40 for transmitting a drive from said internal com
bustion engine to the cable reel, a clutch for con
cable reel, the combination of a portable frame
capable of being moved from place to place for
establishing driving connection with diiîerent
cable reels, a source of power on said frame, and
a power transmitting arm for connecting said
source of power with the reel, said arm being
swiveled upon said frame for vertical swinging
movement in a plane substantially parallel to the
side of the cable reel, a drive shaft substantially
coincident with the swivelling~ axis of said arm,
a driving head mounted in the outer end of said
arm for rotation about an axis disposed substan
tially at right angles to the length of said arm,
power transmission means extending between
trolling the power transmitting connection be
tween said engine and said drive means, vacuum
responsive means for governing the engagement
of said clutch, said vacuum responsive means de
riving said vacuum from said engine, and a port
able foot switch operative to electrically govern
said vacuum responsive means.
8. In a portable drive unit for driving a cable
reel, the combination of a portable frame adapted
to be moved from place to place in the perform
ance of cable reeling and unreeling operations,
an internal combustion engine on said frame, a
drive arm for transmitting a drive from said in
said drive shaft and said driving head, and means 55 ternal combustion engine to the cable reel, said
drive arm comprising a driving head rotatably
for coupling said driving head with the cable reel.
mounted in the outer end of said drive arm for
4. In a portable power drive unit for driving a
rotation on an axis substantially at right angles
cable reel, the combination of a portable frame
to said arm, quick detachable coupling means for
adapted to be moved from place to place in the
performance of cable reeling and unreeling op 60 coupling said driving head to the end of a cable
reel substantially in axial alignment therewith, a
erations, a source of power on said frame, a drive
clutch for controlling the power transmitting con
shaft on said frame driven by said source of
nection between said engine and said driving
power, and a vertically swinging power transmis
head, vacuum responsive means for governing the
sion arm for coupling said drive shaft with the
cable reel, said arm being swiveled forl rotative 65 engagement of said clutch, said vacuum ,respon
sive means deriving said vacuum from the engine,
movement on the axis of the drive shaft and sub
and a portable electric foot switch operative to
stantially parallel with the end of the reel, a
electrically govern said vacuum responsive means.
sprocket wheel mounted on said drive Shaft with
in said arm, a hollow spindle journaled in the
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