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Патент USA US2411797

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Nov. 26,1946. -
l
5w. J. LEwls Er Al.
I
2,411,797
CURQIÈNT COLLECTOR
Filed Aug», 26’ 1944
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3I1Dentor
MEÈEN @I ¿E’WLS
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JUSTIN H. SANPUBD
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.
Patented Nov. 26, 1946
2,411,797
‘
UNITED STATES PATENT OFFICE
CURRENT COLLECTOR
Warren J. Lewis and Justin H. Sanford, Mans
field, Ohio, assignors to The Ohio Brass Com
pany, Mansfield, Ohio, a corporation of New
Jersey
Application August 26, 1944, Serial No. 551,381
13 Claims.
(Cl. 191-45)
2
1
Our invention relates to current collectors and Y
The bar 8, between the guides 1, has an upper
»particularly for use on traveling cranes.
The main object of our invention is to provide '
a collector in which the shoe is spring mounted
concave bearing surface I 0 and a lower convex
for movement in one direction and in which the
shoe lis freely movable in a direction at right an
gles to the ñrst said direction of movement.
Other objects will be apparent from our de
scription to follow in which our invention is fully
set forth and shown in the accompanying draw
Mounted on the supporting bar 8 is a shoe
arranged to slide back and forth upon the bar 8
between the guides 1.
ing.
In electrically operated cranes which move
along a track and in which power is gathered
from one or several conductors depending upon
the power system, the conductors extend as a rule
in a direction parallel to the direction of travel
of the crane, and are located either above the
crane or at one end thereof and mounted on the
track support.
These conductors may vary in their spacing
somewhat or have a sag between unyielding iixed
insulating supports. For these reasons we make
the collector shoe movable or adjustable in two
directions at right angles to each other.
1n the drawing:
Fig, 1 shows a front View in partial section of
a collector unit mounted on a crane member.
Fig. 2 is a side or end view of Fig. 1,
Fig. 3 is a view in partial section taken on the
line 3_3 of Fig. 1.
In the preferred embodiment of our invention
a spring support for the shoe is provided com
’ prising a pair of insulating units I. Each unit is
provided with a pair of spaced metal members 2
and 3 surrounded by insulation 4 which also ex- I?
tends between the members 2 and 3, thus provid
ing an insulator unit.
The members 2 each have a threaded oriñce by
means of which the insulator is secured to the
crane member 5 by cap screw or by a stud andv
nut 6.
Projecting from each member 3 in axial align
ment with the insulator unit and stud and nut 6,
is a guide stud 'I threaded at one end and inserted ,
in a threaded orifice in the member 3.
v The insulating units I are each mounted on a
"member >5 of the crane or in any other suitable
manner and in spaced relation with their longi
tudinal axes and the axes of the guide studs par
allel.
,
«
Slidably mounted on the guides 1 is a support
ing, bar 8 _which rests upon a pair of helically
bearing surface II and each surface forming an
arc of a circle having a common center of radius.
The shoe comprises a saddle I2 having a trans
verse opening I3 conforming to the transverse
cross-section of the bar 8 with suiiicient clear
ance to prevent the shoe binding on the bar, and
the openingforming a greater arc of a circle than
the bar whereby the shoe may rock on the bar in
a plane at right angles tothe longitudinal axis
of the bar. The side walls of the slot when en
gaged by the side walls of the bar will limit the
rocking movement of the shoe.
Mounted on the saddle I2 is a holder I4 having
a means I5 at one end to hook into the saddle
and a threaded lug I6 at the other end to receive
a cap screw I 'I whereby the holder is held in place
on the saddle I 2.
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The holder may be provided with an insert I8
of carbonaceous material, or of a soft or hard
metal or a mix of carbon and metal or the insert
may be omitted entirely and the holder made
solid.
'
_
The holder I4 is provided with a longitudinal
groove I9 to receive the conductor 20 and hold
the shoe in position on the conductor.
For better description of our shoe, reference is
made to U. S. Patents 1,890,946 and 2,185,268.
It will be apparent that the shoe is cushion
supported and yieldable upon the guides 'I and
also laterally movable on the bar 8 to adjust its
position for irregularities in the sag and spacing
of the conductors and that the shoe is also ar
ranged to rock in a plane at right angles to the
axis of the bar 8. Any one or all of the said
movements may be omitted if desired.
As many units may be used as necessary for
the number of conductors required.
Leading from the shoe is a tap 2| secured to
the saddle I2 bythe cap screw I'I. The tap con
nects to the operating mechanism on the crane.
While we have shown and described a certain
, embodiment of our invention, it is understood to
be capabîe of modification. Changes, therefore,
" may be made without departing from the spirit
and scope of the invention as disclosed in the ap
f pended claims.
We claim:
A
.
-
. wound springs 9, one on each guide 1 and which
1. A current collector comprising, a traveling
yieldingly resist ymovement of the supporting bar
'I towards the insulator units I.
. crane, a -pair of spaced insulators mounted on
the crane, means projecting from each insulator
2,411,797
3
in a direction away from the crane, an elongated
bar mounted on the said means in slidable rela
tion thereto toward and away from the insula
tors, yielding means interposed between the bar
and the insulators to cushion the movement of
the bar in one direction, the bar having a con
cave bearing surface, a current` collector shoe
mounted on the bar to move longitudinally there
of and having a convex bearing surface cooperat
ing with the concave bearing surface whereby
the shoe may rock upon the bar in a plane at
right angles to the longitudinal axis of the bar
and a groove associated with the shoe and ex
4
to the axes of the guide means, the bar being
movable along the guide means in two directions
and resilient means to cushion the movement of
the bar in one direction, a collector shoe mounted
on the bar and freely movable along the bar and
means on the shoe to receive a trolley wire and
to guide the shoe along the Wire.
6. A current collector comprising, a pair of
spaced insulators each provided at one end with
means to secure it to a support, guide means
projecting from the opposite end of each insu
lator and having parallel axes, a support bar hav
ing its ends movably mounted on the guide means
and resilient means to cushion the bar in one
direction of movement, a collector shoe mounted
to receive a current conductor.
on the bar and movable along the bar and mov
Z. A current collector comprising, an elongated
able in a plane at right angles to the longitudinal
bar provided with a concave bearing surface,
axis of the bar and means on the shoe to receive
means to support the bar comprising a pair of
and guide the shoe along a trolley wire.
spaced insulators, means to secure the insulators
7. A current collector comprising, a pair of
to a support, guide means extending from each
spaced insulators each provided at one end with
insulator, the axes of the guide means being par
means to secure it to a support, guide means
allel and resilient means interposed between the
projecting from the opposite end of each insu
bar and the insulators to cushion the movement
lator and having parallel axes, a support bar hav
of the bar and a collector shoe slidably mounted
on the bar and having a convex bearing surface 25 ing `its ends movably mounted on the guide means
and resilient means to cushion the bar in one
engaging the bearing surface on the bar where
direction of movement, a collector shoe mounted
by the shoe may oscillate in a plane transverse
on the bar and movable along the bar and mov
to the longitudinal axis of the bar, the shoe being
able in a plane at right angles to the longitudinal
slidable longitudinally along the bar and having
an elongated groove to receive a trolley wire.
30 axis of the bar and means on the shoe to receive
and guide the shoe along a trolley wire and other
3. A current collector comprising, a pair of
means to limit the last said movement of the
spaced insulators each provided with means to
shoe on the bar.
secure it to a support, means projecting from
8. A support for a current collector shoe com
each insulator in insulated relation to the first
said means and having parallel longitudinal axes, 35 prising, a pair of insulators spaced, apart with
means to secure each insulator to a support,
a supporting bar with ends associated with the
elongated guiding means projecting from each
said means and movable along the projecting
insulator and having parallel axes common with
means in the direction of the axes thereof, yield
the axes of the iirst said means, the said means
ing means interposed between the bar and the
for each insulator being insulated from each
insulators, the bar provided with a concave bear
other, a supporting bar for the shoe extending
ing surface, a shoe mounted on the bar and pro
between the guiding means and having its ends
vided with a convex bearing surface cooperating
associated with the guiding means whereby the
with the concave bearing surface on the bar
bar may move along the guiding means in two
whereby the shoe may pivot in a plane at right
angles to the longitudinal axis of the bar, the 45 directions and means to cushion the movement
tending in the direction of motion of the shoe
shoe being movable along the bar between the
in one direction.
projecting means.
4. A current collector comprising, a pair of
spaced insulators each provided with means to
9. A current Collector comprising, a pair of
spaced insulators with means at one end to se
cure the insulators to a support, other means
secure it to a support, means projecting from ~
projecting means in the direction of the axes
projecting from each insulator and insulated from
the first said means, an elongated support bar
mounted on the said other means, the bar pro
vided with a curved bearing surface, a shoe pro
vided with an insert, an opening through the
shoe to receive the bar, the opening having a
thereof, yielding means interposed between the
bar and the insulators, the bar provided with a
curved bearing surface cooperating with the bear
ing surface on the bar, the sho-e movable along
each insulator in insulated relation to the first
said means and having parallel longitudinal axes,
a supporting bar with ends associated with the
said projecting means and movable along the
the bar between said other means and in a plane
concave bearing surface, a shoe mounted on the
ät right angles to the longitudinal axis of the
bar and provided with a convex bearing surface
cooperating with the concave bearing surface cn 60 ar.
10. A current collector comprising a pair of
the bar whereby the shoe may pivot in a plane
spaced insulators, means at one end of each in
at right angles to the longitudinal axis of the
sulator to secure it to a support, guiding means
bar, the shoe being movable along the bar be
at the other end of each insulator, a bar ex
tween the projecting means and means on the
shoe cooperating with means on the bar to main 65 tending between the guiding means and having its
ends cooperating with the guiding means, the bar
movable along the guiding means, a current col
lector mounted on the bar and provided with
means to receive a trolley wire to guide the col
ing parallel axes to secure it to a support, guide 70 lector along the wire and means yieldingly resist
ing movement of the bar due to `pressure of the
means projecting from each insulator, the lon
collector against the trolley wire.
gitudinal axis of each guide means being common
1l. A current collector comprising a pair of
with the axis of the associated ñrst means, an
spaced insulators each having means at one end
elongated support bar mounted on the guide
means with its longitudinal axis at right angles 75 to secure the insulators to a movable support and
tain the cooperation between the said bearing
surfaces.
5. A current collector comprising, a pair of
spaced insulators each provided with means hav
2,411,797 '
5
6
other means projecting therefrom and insulated
from the first means, an elongated support bar
mounted on the said other means, the bar pro
two directions and yielding means associated with
each guide means to support the elongated bar,
vided with a curved bearing surface, a shoe
mounted on the bar and free to move along the
bar and provided with an elongated groove to re
posed transversely curved surfaces.
13. A current collector comprising a pair of
ceive a trolley wire, the longitudinal plane of the
groove'being at right angles to the longitudinal
axis of the bar, the shoe having an opening
therethrough and having a curved surface co
operating wíth the bearing surfaceon the bar
whereby the shoe may pivot on the bar in the
direction of said plane.
'
12. A support for a current collector shoe com~
the bar provided with a pair of oppositely dìs~ ‘
spaced insulators, means to secure each insula
tor to a support, a pair of parallel guide rods se
cured to and projecting from the insulators and
insulated from the said means, each insulator
having one rod, a support bar positioned between
the guide rods and having its ends associated
with the rods, a current collector mounted on
the bar and provided with means to receive a
trolley wire and guide the collector along the
15 wire, the collector movable along the bar, means
on the bar cooperating with means on the cur
lator provided with means to secure it to a sup
port and guide means projecting from each in
1 rent collector whereby the> shoe may oscillate
transversely relative to the bar and means on
sulator, the first and second said means of eachv
prising, a pair of spaced insulators, each insu
insulator being in insulated relation and having
the bar cooperating with means on the current
aligned axes and the projecting means having 20 collector to limit the oscillation in each direc
parallel axes, an elongated bar to support the
shoe extending between the guide means where
WARREN J. LEWIS.
by the bar may move along the guide means in
JUSTIN H. SANFORD.
tion.
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