Патент USA US2571248

Oct. 16, 195]
5,. c, HUBBARD
2,571,246
OPERATING POLE ASSEMBLY FOR HIGH TENSION LINES
Filed 0O’(.. 25, 1946
‘
6 Sheets-Sheet l
INVENTOR.
.BY
MJKW
67%
Oct. 16, 1951
D, c, HUBBARD
2,571,246
OPERATING POLE ASSEMBLY FOR HIGH TENSION LINES
Filed Oct. 23, 1946
6 Sheets-Sheet 2
IN VEN TOR.
3m 4‘.
Oct. 16, 1951
2,571,246
D. C. HUBBARD
I OPERATING POLE ASSEMBLY FOR HIGH TENSION LINES
Filed Oct. 25, 1946
6 Sheets-Sheet 3
INVENTOR.
@m 6. Mi
BY
WKWM
Oct. 16, 1951
D. c_ HUBBARD
2,571,246
OPERATING POLE ASSEMBLY FOR HIGH TENSION LINES
Filed Oct. 25, 1946
6 Sheets-Sheet 4
45
INVENTOR.
3% (Y
Oct. 16, 1951
D_ Q HUBBARD
2,571,246
OPERATING POLE ASSEMBLY FOR HIGH TENSION LINES
Filed Oct. 23, 1946
.
6 Sheets-Sheet 5
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Oct. 16, 1951
D_ c, HUBBARD
2,571,246
OPERATING POLE ASSEMBLY FOR HIGH TENSION LINES
Filed Oct. 23, 1946
6 Sheets-Sheet 6
INVENTOR.
QQMCW
BY
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Patented Oct. 16, 1951
2,571,246
UNITED STATES’ PATENT OFFICE
2,571,246
OPERATING POLE ASSEMBLY FOR
HIGHi-TENSION LINES
David C. Hubbard, Centralia, Mo., assignor to
A. B. Chance Company, Centralia, Mo., a cor
poration of Missouri “'
Application October 23, 1946, Serial No. 705,107
2 Claims. (Cl. 294—19)
1
2
The present invention relates to operating pole
assemblies for high tension lines, and is particu
a substantially axial direction between the
clamp and the end of the wire tong, so that the
wire tong may be made to slide in its clamp with—
larly concerned with an improved assembly in
cluding one or more of the operating poles
usually called wire tongs.
Such wire tongs are ,
employed for many different purposes, one of the
principal functions of the :tong being for the pur
pose of manipulating or moving a high tension
wire away from the cross arms and insulators
out binding, thus enabling the operator to ac
complish his work with a lighter block and tackle
or with the exertion of less effort than is neces
sary with the devices of the prior art.
Another object of the invention is the pro
vision of an improved operating pole assembly
after the tie wire has been removed to permit the 110 which is provided with a force applying means
lineman to work about the upper part of the
pole without danger from the high tension wires
which may still be energized.
Thus the wire
tongs enable the lineman to work safely by using
the tongs to push the wires away from the vi
cinity from which the workman is to operate.
for driving the pole in substantially an axial di
rection through a pole clamp, so that the pole will
not be subjected to excessive wear which is other
wise encountered in devices of the prior art due
to the side pull which takes place in those de
vices of the prior art, tending to wear off the
insulating varnish and to wear and damage the
The high voltage line wires are under consid
protective surface of the pole.
‘
erable tension when installed on the poles, and
Another object of the invention is the pro
the wire tongs are thus compelled to operate upon
a relatively tight wire which the wire tongs must 20 vision of an improved and simpler pole operating
assembly, which is sturdy, adapted to be used
push away from the cross arm and pole, at the
with a minimum amount of labor, light in weight
same time increasing the tension of the line wire.
:so that it can be carried by the lineman with a
Thus it becomes necessary to exert considerable
force axially on a wire tong and the assembly
minimum amount of effort, and easily manipu
must have something to clamp the wire tong in 26 lated to actuate a wire tong when the saddle is
secured to a line pole and the opposite end of
place and to hold the tong in its ?nal position
the wire tong engages a line wire.
with the wire pushed out of its normal position
Other objects and advantages of the invention
on the insulator.
will be apparent from the following description
For this purpose the wire tong is supported by
a wire tong clamp, which is pivotally mounted 30 and the accompanying drawings, in which simi
upon a saddle that‘is secured .to the line pole.
lar characters of reference indicate similar parts
In order to exert su?icient force to move the wire
throughout the several views,
}
'
tong axially in its saddle some force multiplying
Referring to the drawings accompanying the
device, such as a block- and tackle, may be em
speci?cation, of which there are four sheets,
ployed.
35
Fig. 1 is an elevational view of a high tension
The assemblies of the prior art with which I
line with one of the line wires held by a pair of
am familiar applied the block and tackle in such
wire tong assemblies embodying the invention;
manner that it did not act axially of the wire
Fig. 2 is a plan view of a wire tong assembly ,
tong. Instead the block and tackle tended to
embodying the invention;
,
bend the wire tong pole, and also tended to cause
.Fig. 3 is a larger plan view of the assembly,
the wire tong pole to bind in its clamp.
shown without the pole and without the block
One of the objects of the present invention is
and tackle;
a provision of an improved operating pole as
Fig. 4 is an end elevational view of the tong
sembly, including a block and tackle or other
clamp;
'
'
force multiplying means for moving a wire tong 45
Fig. 5 is a fragmentary sectional view, taken
in its clamp, in which vthe force multiplying
on the plane of the line 5-5 of Fig. 4;
means is so arranged as .to act in substantially
Fig. 6 is a bottom plan view of the device of
an axial direction, thus eliminating as far as
Fig. 4;
possible the bending moment which was placed
Fig. 7 is a side elevational view, taken from the
on wire tong poles in devices of the prior art, and 50
right of Fig. 4;
.
increasing the factor of safety for a .pole of given
strength and size.
Fig. 8 is a side elevational view, ‘taken from
the left of Fig. 4;
Another object of the invention is the pro
Fig. 9 is a view similar to Fig. 2 .of a modi?ed
vision of an improved wire tong assembly .pro
wire tong assembly;
vided with force multiplying means for-acting in
2,571,246
4
3
Fig. 10 is another similar view of a second
modi?cation;
Fig. 11 is a side elevational view of an anchor
ing device for securing one of the blocks to the
end of a wire tong, as shown in Fig. 10;
Fig. 12 is a bottom plan view of the device of
Fig. 11;
‘
'
.
Fig. 13 is a sectional view, taken on the plane
of the line I3—-I3 of Fig. 12, looking in the di
cular in shape forming a ring to which clamps,
clevises, etc., may be attached.
The saddle base I I is provided at one side with
a suitable pair of slots 25, 26 adapted to receive
and anchor any of the links of the chain I2.
The other end of the chain I2 is attached by
means of'a'pin '21 to the toggle mechanism I3,
which has its‘ other end pivotally secured by pin
28 to the saddle base II. Mechanism I3 com
rection of the arrows, and showing how the ring 10 prises a plurality of links or levers forming a tog
gle by means of which the chain may be tight
?tting of the wire tong is secured in the device of
end, secured and latched. For example, link 29 is
Fig. 12;
,
Fig. 14 is a front elevational view of one of
pivotally securedat 28 to saddle base I I and may
the clamping members of the wire tong clamp
consist‘of a pair of similar members. At its other
when it is equipped with an integral ?tting for 15 end link 29 is pivotally secured by means of pin
engaging the hook of the block, as shown in Figs.
30 to the handle lever 3I.
Link 32'has its upper end secured to chain I2
9 and 10;
.
by pin 21, and is provided with an arcuate slot 33
Fig. 15 is a side elevational view of this clamp
at its lower end for engagement with a pin 34
ing member;
Fig. 16 is a top plan view ofthis clamping mem 20 carried by handle lever 3I. Handle lever 3I is
Referring to Fig. 1, thisis an elevational view
pivotally secured to the lower link 29 atj3Il as
previously described, and pivotally secured to the
showing one mode of use of a wire tong assembly
embodying the invention. * It indicates the line
upper link 32 by pin 34 in slot 33.
As the handle lever 3| is rotated clockwise
ber.
’
'
pole, which may support a pair of saddle bases 25 in 32 the linkage I3 is effectively extended to
release the tension on chain I2. The reverse mo
HA and I I3 of the type illustrated in Fig. l, and
tion of handle lever '3I in a counterclockwise di
indicated by the numeral I I in that ?gure.
The saddle bases are each secured to the pole
rection in Fig. 3 causes this toggle to diminish its
length, tighten the chain I2 and secure it when
by means of a suitable chain I2 and a suitable
tightening and latching mechanism I3,Fig. 2.
30 the line of centers 3Il'—28' passes center of pin 34.
and 363 similar to the pole clamp 36 shownin
An additional safety factor is provided by the
spring-pressed latch 35 pivoted on handle lever
3|, and having a latching hook 36a engaging a
Fig. 2 and illustrated in Figs. 3 to 8.
shoulder on the link 32.
Referring again to Fig. 1, each of the saddle
base assemblies I IA and I IB carries a clamp 36A
'
y 7'
I
The two pole clamps 36A and 36B each slidably 85 Referring to Fig. 3, the saddle support II, is
there shown pivotally supporting a clamp indi
support a wire tong pole 46A and 483. The ends
cated by 36. The clamp has a pair of apertured
of these wire tong poles carry suitable ?ttings
lugs 31, 38 pivotally mounted on vthe bolt 39, and
engaging about the line wire 9 at substantially
thebolt also supports a U'-sh_aped clevis 40, each
the same point on the wire. Thus the wire tongs
46A and 463 may be subjected to an axial push 40 leg of which is apertured' and supported upon
in each case, so that after the wire 9 has had its
tie wire removed, the wire 9 may be pushed away
from the insulator 8 and may thus leave. that
environment free of energized conductors for the
linemen to work in comparative safety.
The tongs 46B and 46A and the line pole I0
form a triangle, and the poles must, of course, be
clamped securely by means of the pole clamps
36A and 36B.
Referring now to Figs. 2 and 3, these views
show in greater detail the operating tong as—
sembly adjacent the line pole, and in addition to
the elements already described they include a
block and tackle for driving the wire tong axially
bolt 39. VA block and tackle has the hook ‘I
hooked in the‘ clevis 40 to secure one sheave 42.
The other sheave 43 has its hook 44 hooked in
the ring 45 of a metal ?tting secured to the end
of a wire tong pole 46 (Fig. 2) .'
'
’ ‘
Thewire tong pole extends through the clamp
35 and at its other end has a suitable tong or se=
curing member to engage and hold an energized
conductor. When the conductor has been re
leased from its insulator, by removing the tie
wire and two such assemblies, as shown in Fig.
1, engage. the ‘wire and the line pole forming a
triangle. the block and tackle indicated in its
entirety by 4'! of either wire tong or both may
of its clamp.
. .
55 ‘e used to pull on the end of the tong, causing it
to slide in the clamp 35 and pushing the ener
The saddle base II comprises a cast metal
gized conductor away from its insulator into such
.member formed with a partially cylindrical sur
face I4 on its base. The radius on which the sur
a position that'the lineman may operate safely
‘around the line pole.
_
face I4 is formed may be an average radius for
line poles of various diameters. The saddle base 60 It will be noted that even though the block and
II preferably tapers in size from its base surface
I4 to a cylindrical supporting lug I5 which is
hollow, and has its end wall I6 provided withra
tackle 41 is disposed close to the wire tong 46,
the block and tackle operates eccentrically with
respect to the wire tong. There ‘is a tendency of
the pole to bind in the clamp and, therefore, it is
through-bore I1.
, .
.
65 of the utmost importance that the clamp be so
The through-bore I1 is adapted toreceive the
constructed as to‘ facilitate the sliding of the pole
trunnion I8 of a connecting ring swivel ?tting I9,
in the clamp with a minimum friction.
which may have a reduced threaded portion for
Referring now to Fig. 4, the clamp 36 prefer
engagement with the nut 20 located on the inside
ably comprises two parts 48, 49 which are piv
of the wall I6.
I
J
70 otally secured together by means of a pin or rivet
50. Both these members 48, 49v may comprise
The trunnion I8 of ?tting I9 carries a disk
like member 2| serving as a thrust bearing to
engage the outside surface 22 of wall I6, and the
disk 2I carries an outwardly projecting lug 23
which has a through-bore 24 and is partially @111
cast metal members made of one of the light
metals such as a heat treated aluminum alloy,
having particularly highphysical characteristics,
thereby increasing the factor of safety while still
$2,571,246
5
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maintaining a very light weight. It is of ‘the
utmost importance that weight ‘be reduced to 1a
through-bore 9| extending parallel ‘to the axes
of the clamp. The .ribs .56 and .51 may have ex
tensions 92, 93 around the bearing 99 reenforcing
‘minimum as the linemen sometimes have ‘to
it. The length of the bearing 90, including ribs
carry these tools considerable distances over
rough terrain and, of course, they are carried .5 92, '93, is su?icient to be received between a ‘pair
‘while climbing the pole.
.
The member 49 comprises’ a cast vmetal mem
of bearings 94, .95 carried by the upper member
48. These bearings 94, 95 also preferably have
reduced cylindrical central portions 96 and re
enforcing annular ribs 91, 98 at each end.
ber ‘having a substantially half cylindrical body
5| with an external cylindrical surface 52, ‘and
The bearings 98 on the lower half project up
an internal cylindrical surface :53, Fig. 5. The ll)
ward above the body 5| and those on the upper
body 5| has depending from it, ‘in Fig. 4, a sub
stant'ially rectangular lug ‘54 which has a longitu
half 48 project downward so that when theiraxes
dinally extending rectangular slot 555 forming the
are aligned their two clamping members 48, 49
form a cylindrical bore slightly larger than the
two legs ~31 and 38 previously mentioned. ‘These
pole 46.
legs have the aligned ‘bores 55a-for receiving the
The lrivet 50 passing through all of the bear
‘bolt 39, and the depth of the slot 55 is su?icient
ings .99, 94, 95 secures the two members 48, 49 to
to permit it to receive the swivel ring 23 when
gether for pivotal movement. At its right side,
7the'bolt39 passes through its bore '24.
Fig. 4, the upper member 48 is provided with a
The bores 55a extend at ‘right angles to
the axis of the cylindrical surfaces v52 and 53. 20 pair of outwardly projecting lugs 99, I80, Fig. 6,
separated by a rectangular slot IOI. Slot IIII is
Lug 54 is preferably joined to the ‘body 5| by a
wide enough to pass the shank 19 of eye .bolt 11.
pair of reenforcing ribs 56, 51, Fig. ‘6, and by an
Lugs 99, I99 have upper ?at surfaces ‘I02.
other pair. of reenforcing ribs 58 v‘and 59 at the
opposite side of lug 54.
These flat surfaces, however, are large enough
only-to engage the bottom annular surface 89 of
The inner cylindrical surfaces 53 of the two ~
wing nut 82, and each lug 99, I09 has an upward
clamping members 48 ‘and 49 are substantially
ly extending lug I93 located outside of the conical
cylindrical throughout, and smooth and-polished
so as to engage the wire tong pole with a mini
mum amount of friction.
body 85 of the wing nut 82 to retain the wing nut
behind them and to prevent the eye bolt 11 from
At each end of the body there is an outwardly 30 pivoting out of the slot I0 I.
The length of the clamping members in an
curved surface '61, -'68 serving to guide a pole
more readily into the clamp and to prevent any
axial direction is substantial so that there is an
elongated clamping surface of large area. When
excessive clamping action‘or marking of the pole
the wing nut 82 is tightened the wire tong pole
by the end-corners of the clamp.
is securely clamped, but when the wing nut is
The inner cylindrical surface '53 comprises
released the pole slides freely with a minimum of
substantially one half a cylinder ‘for ‘the mem
damage to the surface of the pole. Thus the
ber 49, and substantially one half a cylinder for
I pole does not tend to bind in the clamp when it
the member 48, and the radius of these sur
is being actuated by means of a block and tackle.
faces 53 is slightly larger than the radius of
the tong pole 46 such as, ior example, 1?; of an 40
It will be observed that the block and tackle
inch greater than the radius ‘of the pole.
41 has one end attached quite close to the pole
At the right sidelo'f the member 49,'Fig. 6, the
46 ‘at the clamp 36, and the other end attached
to the end of the pole 46 at the ?tting 45. Thus
ribs 58 and 59 terminate in a pair of laterally
projecting pivot ?anges 12, 1-3 spaced from each
the block and tackle is as close as it can be to
other by a slot 14, and having the @aligned bores 45 the axis of the pole 46 without having the pulleys
‘The eye 'bolt '11 preferably has ‘a cylindrical
‘shank, the upper end ‘of which is threaded at 80
and provided with a cap nut~8| which is ‘threaded
engage the pole 46.
When force is applied to the pole by means of
the block and tackle this force acts in substan
tially an axial direction. It exerts substantially
no side pull which would tend to bend or break
the pole, but merely places a compression on the
pole, the pole acting as a column; thus there is
no tendency for the pole to bind in its clamp, but
on the contrary the pole slides freely and is mere
tightly home 'on the end of the bolt to serve >
ly guided by the clamp during this sliding action.
as a permanent ‘stop.’ The threaded vportion 89
The line wire may be pushed farther away with
less effort and the block and tackle may be of
lighter construction. With the devices of the
15 for receiving the rivet 16. Rivet 16 ‘is adapted
to provide a pivotal support for a screw bolt 11,
the lower end of which "is flattened to be re
ceived in the slot '14, rounded to rotate in the
slot 14 ‘and provided with a through-bore 18 ‘for
receiving 'r'ivetf16.
of eye bolt 11 ‘extends well downward ‘on the bolt
and carries a wing nut 82,-which is engaged by
a compression spring ‘83, "theiotherlend of which
prior art heavy loading tended to pull the wire
engages cap ‘nut 8|. Compression spring 83 en 60 tong out of line, frequently bowing the lower end
of the tong. With the devices of the prior art it
gages the ?a-t ‘upper end 84 of wing nut 82 and
was also difficult after the blocks had been tight
serves as a nut lock, ‘safely ‘holding the wing
ened to pivot the wire tongs and the pole clamps
nut ‘82 in any clamping ’or unclamping position.
about the saddle base.
' ‘
Wing nut 82 may have a tapered ifrusto-‘conical
With the present assembly, as the block and
body'85 vprovided‘with ‘an axially threaded ‘bore 86 .
and a pair ‘of radially projecting ‘?at wings 81
'a'pertured at 88 to reduce the ‘weight. At its
lower end ‘wing nut ‘82 has a v‘flat annular surface
89 for ‘effecting va clamping'engagement with’the
upper'member 48.
The two members 48, 49 are pivoted together
at the left side of Fig. 4 by means of the rivet 50.
In order to provide bearings ‘for "the rivet 50 the
body 5| supports at its left side, vin Figs. 4 and 16,
a cylindrical ‘bearing member 90 having a
tackle is attached to the clamp outwardly of the
pivot on the saddle basethe clamp, tackle and
pole still rotate freely on‘ the saddle base after
the clamp has been tightened. ‘The block and
tackle does not restrict this pivotal movement.
Heavy conductors can be handled with greater
ease and greater safety to the-operator bymeans
of the assembly shown, and there is less ‘danger
of breaking poles or of other accidents than ‘with
thedevices of the prior art.
‘2,571,246
8
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structure for anchoring one of the blocks of the
block and tackle. In this embodiment of the in
vention the upper block 43 is secured to the ring
bordered by a depending annular ?ange I23 for
embracing the ring 45; but, here again the an
nular ?ange I23 and part of the clamping mem
ber H4 is cut away at the socket portion H8 of
the ring ?tting 45.
As shown in Fig. 13, the ring 45 may be placed
?tting 45 on the end of the wire tong 46 in the
same manner as shown in Fig. 2; but the block is
in the groove III, the clamping member H4
placed on top of it, and the eye screw H5 passed
Referring to Fig. 9, this is a view similar to Fig.
2 of another modi?ed form of assembly, in which
the wire tong clamp is provided with an improved
through the ring and through the clamping mem
ber H4 and threaded into the bore H5. The
eye screw H5 has an annular shoulder I24, which
engages the clamping member I I4; and when the
The wire tong clamp 36 has one of its clamping
eye bolt is driven home, the ring 45 is securely
members I05 of an improved construction pro
clamped between the members I I3, I I4.
vided with an integral extension ID‘! for anchor
Thus, the end of the wire tong may be pro
ing the lower block 42 by means of its hook 4|. 15
turned on its side so that its side engages the
ring ?tting 45, thus maintaining the ropes clear
of the pole and its ?ttings.
vided with a lateral extension for engagement
with the block at this point to assure the secure
Such a clamping member I05 is shown in Figs.
14 to 16. This clamping member may be in all
ways similar to the clamping member 49, pre
ment of the two blocks in parallel positions with
respect to the wire tong 46.
viously described, except that it is provided on
It will thus be observed that one of the com
one end with an integral extension I01, which 20
mon features of all of these modi?cations is that
may be of substantially U shape, forming a closed
force is applied to the end of the wire tong in a
loop or elongated aperture I08 for receiving the
direction parallel to the axis of the wire tong
hook M of the block 42.
pole; and furthermore, the block being attached
As shown in Fig. 16, this extension I01 com
prises a pair of legs I09, HII, which are spaced 25 to the wire tong clamp outwardly of its pivot on
the pole saddle, the wire tong can be rotated on
from each other substantially the same as the
the saddle or moved in any desired way on the
ribs 31, 38, which receive the pivotal connection
saddle without the restraint on the block and
of the saddle.
The legs I09, H0 may be relatively thin, but
tackle.
,
While I have illustrated a preferred embodi
wide, and are joined not only to the cylindrical 30
ment of my invention, many modi?cations may
body 5I of the clamp, but to the ribs 31, 38, and
be made without departing from the spirit of the
extend diagonally outward with respect to the
invention, and I do not wish to be limited to the
axis of the clamp, as shown in Fig. 15. The two
precise details of construction set forth, but de
legs I09, H0 are integrally joined by a yoke I I I,
which may be substantially cylindrical, and which 35 sire to avail myself of all changes within the scope
of the appended claims.
is to engage the hook 4 I .
Having thus described my invention, what I
The diagonal arrangement of the extension IITI
claim as new and desire to secure by Letters Pat
is adapted to space the lower block 42 from the
ent of the United States, is:
wire tong 46 so that the pulleys or ropes will not
1. An operating pole securing assembly for the
interfere with the parts of the wire tong, but
application of force substantially longitudinally
the force applied by the block and tackle is ap
of the operating pole and for assisting said force
plied as close as possible to the axis of the wire
comprising, a saddle and securing chain for se
tong pole, and the wire tong may be rotated on
curing the assembly to a line pole, said saddle
the saddle without any restraint on the block and
tackle because the lower block is attached to the 45 having an outwardly projecting, round, hollow
lug provided with an end wall having a circular
clamp itself.
bore, a rotatable member having a securing bolt
Referring to Fig. 10, this is another modi?ca
in said bore, said rotatable member having a
tion, in which the mode of attachment of the
thrust ?ange engaging the end of said lug and
block 42 is as shown in Fig. 9, but a special block
having a pivot flange at right angles to the thrust
anchor H2 is provided for the upper end of the
?ange and provided with a through bore, a pole
wire tong.
clamp comprising a pair of clamping members
This block anchor I I2 is shown in Figs. 11, 12,
and a securing bolt, one of said clamping mem
and 13. It comprises a pair of castings H3, H4
bers having-a pair of pivot ?anges located on op
and a threaded member H5. The casting H3 is
formed with a central threaded bore H5 for re 55 posite sides of the ?rst-mentioned pivot ?ange, a
substantially U-shaped member having its legs
ceiving the threaded part of the eye bolt H5.
provided with registering bores adjacent their
The casting H3 has formed about the bore H6
ends and a pintle member passing through both
on one side a groove I II, which is adapted to re
of said pivot ?anges and through the bores in
ceive the ring 45 on the ring ?tting of the wire
tong 46.
The groove I I1 is, therefore, substantially semi
circular in cross-sectional shape and annular in
plan; and this portion of thecasting H3 is sub
stantially circular, except that a portion must
60
said U-shaped member, said pole clamp slidably
or ?xedly supporting a pole at any of a multi
plicity of angles with respect to the line pole due
to said pintle and pivot ?anges, and said saddle
and rotatable member permitting the rotation of
be cut away as at H8, to provide room for the 65 the pole on an axis at right angles to the line pole,
socket portion H9 of the ring ?tting 45.
the U-shaped member permitting the application
of force to the end of the operating pole substan
tially along the axis of the operating pole.
flat lateral extension I20», which extends laterally
2. An operating pole assembly comprising, an
and downwardly, and which has an enlarged
aperture I2I for receiving the hook of the upper 70 elongated wooden insulating pole having a metal
?xture with an eye at one end and having means
block 43; and also this aperture is enlarged to
for grasping a transmission line conductor at the
reduce the weight of the assembly.
other end, a pole clamping member comprising,
The other clamping member H4 may consist
a pair of cylindrical clamping jaws pivoted to
of a substantially circular disc, having a central
aperture I22 for receiving the screw bolt H5, and 75 gether and provided withan adjustable securing
The circular portion of the casting H3 has a
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bolt for slidably or ?xedly supporting the operat
ing pole, one of said clamping ja-Ws being pro
vided with a‘ pivot ?ange, a rotatable supporting
the operating pole on an axis at right angles to
the axis of said rotatable member so that the
operating pole may be applied to the transmis
member provided with a pivot ?ange and a U
sion line conductor at substantially right angles
shaped member having registering apertures in
its legs, a pintle passing through the apertures in
said U-shaped member and through said pivot
?anges, a force supplying tackle having one end
to said conductor.
secured to the eye on said operating pole and the
other end secured to said U-shaped member for
forcibly moving said operating pole 1ongitudinally
in its clamping member, a saddle supporting said
rotatable member and having a laterally project
'
DAVID C. HUBBARD.
REFERENCES CITED
The following references are of record in the
?le of this patent:
UNITED STATES PATENTS
being rotatable with said rotatable member to
Number
655,851
1,394,020
1,485,228
1,616,764
Name
Date
,
Coleman _________ __ Aug. 14, 1900
Johnson _________ __ Oct. 18, 1921
Johnson _________ __ Feb. 26, 1924
Simmons _________ __ Feb. 8, 1927
any angle relative to the axis of the line pole for
engagement with a transmission line conductor,
1,626,861
Murray __________ __ May 3, 1927
1,706,801
Merrill __________ __ Mar. 26, 1929
with the saddle rotated at any of a multiplicity 20
1,819,768
Coiling __________ __ Aug. 18, 1931 '
of positions longitudinally of the line pole, and
said pintle permitting the angular movement of
1,895,746
1,979,688
Bates ____________ __ Jan. 31, 1933
Hamer ___________ __ Nov. 6, 1934
ing lug with a bore receiving a trunnion carried
by said rotatable member, and a chain for secur 15
ing said saddle to a line pole, the operating pole