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Патент USA US2121612

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> June 21, 193}
w. SCHAAKE
2,121,612
CURRENT COLLEQ'II ING DEVI CE
Filed‘ 001;. 25, 1955
2 Sheets-Sheet 1
/4
34
22
/3
WITNESSES: -
I
INVENTOR
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'June21,193s.'
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WSCHAAKE
‘
2,121,612‘
CURRENT COLLECTING YDEVICE
Filed Oct. ‘23, 1935
2 Sheets-Shée’c 2
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MW
26
2,1Zi,tl2
Patented June 21, 1938
UNITED STATES ‘PATENT oFFicE
2,121,612
CURRENT‘ COLLECTING DEVICE
William Schaake, Pittsburgh, Pa., assignor to I
Westinghouse Electric .2; Manufacturing Com
pany, East Pittsburgh, Pa“, a corporation of
Pennsylvania
Application October 23, 1935, Serial No. 46,276
1'? Claims.
‘ (Cl. 191-591)
My invention relates, generally, to current 001
lecting equipment'and it has particular relation
to pole heads for collecting current from trolley
wires.
The object of my invention, generally stated,
a'
is to provide a trolley pole head which shall be
simple and e?icient in operation and which may
be readily and economically manufactured and
installed.
An important object of my invention is to pro
vide a universal mounting for a slider shoe on a
pole head carried at the end of a trolley pole by
an electric vehicle.
Another object of my invention is to provide
for permitting the movement of a slider shoe in
a plurality of planes relative to a pole head.
A further object of my invention is to provide
for the rotation of a current collecting device
about a- horizontal axis relative to a stem which
20 itself is rotatable in a pole head about a vertical
axis.
Still another object of my invention is to pro
vide a separable wear plate between a current
collecting device and its support in. a pole head.
Still another object of my invention is to pro
26 vide a. pole head with a stem rotatable about a
vertical axis and terminating in an arcuate sur
face, a current collecting device inter?tting with
the stem, and a separable arcuate bearing plate
or wear plate interposed between the stem and
.80 the current collecting device.
Other objects of my invention will in part be
obvious and in part appear hereinafter.
My invention accordingly is disclosed in the
embodiment. hereof shown in the accompanying
.86 drawings and comprises the features of construc
tion, combination of elements and arrangement
of parts which will be exempli?ed in the con
struction hereinafter set forth and thescope of
the application of which will be indicated in the
appended claims.
.
For a. more complete understanding of the na
ture and scope of my invention, reference may
be ‘had to the following detailed description taken
in connection with the accompanying drawings,
in which
Fig. 1 is a view, in side elevation, illustrating
ing stem which is rotatably mounted in the pole
head.
Referring now particularly to Figs. land 2 of
the drawings, the reference character It] desig
nates, generally, a pole head which is provided
with a clamp l E for securing the device at the
outer end of a trolley pole i2 adapted to be car
ried by an electric vehicle (not shown). The
pole head it is further provided with a bearing
structure E3 on which is mounted a swivel l4 10
that is adapted to rotate in a pluralityof planes.
In order to collect current, a slider shoe I5 is
mounted on the swivel it and it is arranged to
engage a trolley wire it as illustrated.
The details of construction of the pole head 15
are more clearly illustrated in Figs. 3 and 4 of
the drawings. As there illustrated, the bearing
structure i3 is provided with a vertical opening
Ell in which a bearing bushing 25 is positioned
from the upper side. Mounted for rotation in 20
the bearing bushing 25 is a bearing stem 22 which
is shown in detail in Fig. 6 of the drawings. The
bearing stem '22 is provided with a cylindrical
bearing surface 23 which is arranged to be posi
tioned inside of. the bearing bushing 2i, as illus
trated in Fig. 3 of the drawings. At the upper
end of this surface, a flange 21! is provided to
limit the downward movement of the bearing
stem 22. The lower end 25 of the bearing stem
22 is threaded and a castellated nut 26 is posi 30
tioned thereon to secure the bearing stem 23
in position. A cotter pin 21 is provided to pre
vent the nut 26 from turning when it has been
placed in the desired location.
Interposed be
tween the lower surface of the bearing structure 35
l3 and the top of the nut 26 is a ?at washer 28
and a spring lock washer 29. By means of the
spring lock washer 29, the bearing stem 22 is
resiliently held against longitudinal movement
relative to the bearing ‘bushing 2! under ordi 40
nary conditions.
The upper ‘end of the bearing stem 22 ter
minates in a bearing segment 30, the upper and
lower surfaces of which form arcuate bearing
surfaces. The entire top surface of the bearing 45
segment 38 is machined to a ?nished surface
for a purpose which will be set forth herein
after. In addition, the under surface of the
a concrete embodiment of my‘ invention.
Fig. 2 is a View, in end elevation, of the pole
head shown in Fig. 1.
bearing segment 30 is machined along the edges
Fig. 3 is a sectional view‘ taken along the line
of the swivel it. In order to secure the slider
shoe l5 to the swivel I 1i, a single bolt 33 is pro
III-—-'III of Fig. 2 and showing in detail the. con
struction of the slider shoe and swivel mounting.
Fig. 4 is a sectional View taken along the line
.55
IV-—IV of Fig. 1.
Fig. 5 is a view in side elevation of the bear
ing plate which is interposed between the slider
shoe and the bearing stem, and
~
Fig. 6 is a view in side elevation of the bear
thereof to provide a machined fit with inwardly 60
projecting bearing portions 3! and 32, Fig. 4,
vided which extends transversely therethrough
as shown in Fig. 4 of the drawings.
55
In order to permit the swivel ill and the slider
shoe l 5 carried thereby to rotate relatively to the
bearing stem 22 about a horizontal axis which is
at right angles to the axis of rotation of the bear
ing stem 22, an arcuate bearing or wear plate 34 60
2
2,121,612
is provided. This plate is shown in detail in Fig.
5 of the drawings and its relative location in the
pole head is shown in Figs. 3 and 4 of the draw
head, a current collecting device disposed to ro
ings. The under surface of the arcuate bearing
plate 34 is ?nished to the same radius of curvature
port member, a separate wear plate interposed be
as the upper surface of the bearing segment 30.
The ends of the bearing plate 34 are arranged to
support suitable downwardly extending bosses 35
tween the current collecting device and the sup
port member, and a single retaining means
adapted to retain said assembly in operating rela
and 36 of the slider shoe l5. In order to insure
10 that the proper alignment will be maintained be
tween the slider shoe i5 and the wear plate 34, a
sembly carried by the pole head comprising, a
support member rotatably mounted on said pole
tate with and oscillate at right angles to said sup
tion.
4. A current collector for an electric vehicle 10
comprising, in combination, a pole head disposed
to be carried by a trolley pole, a support member
rotatably mounted on said pole head, a swivel dis
posed to rotate with and oscillate at right angles
to said support member, a current collecting de 15
pin 31 is provided in a suitable opening 38 in the
Wear plate 342. As shown, the pin 31 is provided
at its upper end with a transverse opening 39
15 through which the bolt 33 is passed, thereby se
curing the pin 3‘! in proper alignment with the
slider shoe l5.
In assembling the pole head the bearing bush
ing 2| is ?rst positioned in the bearing structure
20 I3 and then the swivel i4 is placed thereon. The
bearing stem 22 is then passed downwardly
through the swivel l4 and through the bearing
bushing 2! and the washers 2B and 29, the nut
26 and the cotter pin 2'!‘ are placed in their ap
plate interposed between the current collecting de
25 propriate positions. The arcuate bearing plate 34
rotatably mounted on said pole head, a swivel 25
is then positioned on top of the bearing segment
30 with the pin 3‘? in place and the slider shoe I5
is positioned on top of it with the bosses 35 and 36
in engagement with the ends of the bearing plate
34. The single bolt 33 is then positioned in suit
able transverse openings in the swivel M, the pin
31 and the slider shoe l5, as illustrated.
In the foregoing construction, it will be observed
that a minimum number of parts is employed and
that by removing the bolt 33, the slider shoe 15
may be readily removed from the swivel l4 and
replaced. By removing the nut 26 from the
threaded portion 25 of the bearing stem 22, it is
possible to entirely disassemble the movable parts
of the pole head. It will also be observed that in
this construction a minimum amount of machin
ing is required, since there are few ?nished sur
faces.
Since certain changes may be made in the fore
going construction and different embodiments of
the invention may be made without departing
from the scope thereof, it is intended that all
matters shown in the accompanying drawings or
set forth in the foregoing description shall be
50
interpreted as illustrative and not in a limiting
sense.
I claim as my invention:
l._ A device for collecting current from a trolley
wire comprising, in combination, a pole head dis
posed to be carried by a trolley pole, support
means rotatably mounted on said pole head, a
swivel disposed in rotatable relation about said
support means to oscillate in a plurality of planes
relative to said pole head, and current collecting
means detaohably secured in ?xed relation to said
swivel for engaging the trolley wire.
2. A device for collecting current from a trolley
wire comprising, in combination, a pole head dis
posed to be carried by a trolley pole, support
65 means rotatably mounted on said pole head, a
swivel inter?tting in rotatable relation about said
support means and disposed to oscillate in a plu
‘rality of planes relative to said pole head, cur
rent collecting means carried by said swivel for
70 engaging said trolley wire, and means for remov
ably securing said swivel and said current collect
ing means in'?xed relation.
3. A current collector for an electric vehicle
comprising, in combination, a pole head disposed
75 to be carried by a trolley pole, and a unitary as
vice secured in ?xed relation to said swivel for en
gaging a trolley wire, a separate arcuate wear
vice and the support member, and means to se
cure the support member, swivel, wear plate, and 20
current collecting device in operative relation.
5. A current collector for an electric vehicle
comprising, in combination, a pole head disposed
to be carried by a trolley pole, a support member
inter?tting with and disposed to rotate with and
oscillate at right angles to said support member,
a current collecting device carried by said swivel
for engaging a trolley wire, and a single retaining
means for securing said swivel and said current 30
collecting device in ?xed relation with each other
and in movable relation with the support member.
6. A device for collecting current from a trolley
wire comprising, in combination, a pole head dis
posed to be carried by a trolley pole, support
means rotatably mounted on said pole head, cur
35
rent collecting means rotatably interconnected
with said support means and disposed to oscillate
in a plurality of planes relative to said pole head
for engaging the trolley wire, independent bear
ing means interposed between said support and
current collecting means, and common retaining
means including a transverse bolt member adapt
ed to secure the support means, bearing means,
and current collecting means in operating rela 45
_tion.
7. A current collector for an electric vehicle
comprising, in combination, a pole head dis
posed to be carried by a trolley pole, support
means rotatably mounted on said pole head, a 50
swivel disposed about said support means to os
cillate in a plurality of planes relative to said
pole head, current collecting means removably
secured in ?xed relation to said swivel and dis
posed to engage a trolley wire, and independent 55
bearing means interposed between said current
collecting means and said support means.
8. A current collector for an electric vehicle
comprising, in combination, a pole head dis
posed to be carried by a trolley pole,support 60
means rotatably mounted on said pole head, a
swivel rotatably inter?tting with said support
means and disposed to oscillate in a plurality
of planes relative to said pole head, current col
lecting means carried by said swivel and dis
posed to engage a trolley wire, independent bear
65
ing meansvinterposed betweenisaid current col
lecting means and said support means, and re
taining means for securing said swivel, said in~
dependent bearing means, and said current col 70
lecting device in ?xed relation.
9. A current collector for an electric vehicle
comprising, in combination, a pole head dis
posed to be carried by a trolley pole, and the
unitary assembly of a support member rotatably 75
3
2,121,612
mounted on said pole head, a swivel disposed to
rotate with and oscillate at right angles to said
support member, a current collecting device se
cured in ?xed relation to the swivel, a separate
arcuate Wear plate interposed between said sup
port member and said current collecting de
vice to provide a bearing surface therebetween,
and means to secure the support member, swivel,
wear plate and current collecting device in op
10
erating relation.
10. A current collector for an
comprising, in combination, a
posed to be carried by a trolley
member rotatably mounted on
15 a swivel disposed to rotate with
electric vehicle
pole head dis
pole, a support
said pole head,
and oscillate at
right angles to said support member, a current
collecting device secured in ?xed relation with
said swivel for engaging a trolley wire, a separate
wear plate interposed between said support
20 member and said current collecting device, and
means including a transverse through bolt mem
ber adapted to secure the support member, swivel
and current collecting device in association.
11. A current collector for an electric vehicle“
25 comprising, in combination, a pole head disposed
to be‘ carried by a trolley pole, a support mem
ber rotatably mounted on said pole head, a
swivel member interfitting with and disposed to
rotate with and oscillate at right angles to the
support member, a current collector device
adapted to be secured to the swivel, transverse
bolt means for securing the current collector and
the swivel in ?xed relation, and a wear plate in
terposed between the support member and cur
35 rent collector for facilitating relative movement
therebetween.
12. A device for collecting current from a trol
ley wire comprising, in combination, a pole head
disposed to be carried by a trolley pole, a hear
ing stem mounted on said pole head for rotation
40
about a vertical axis, the upper end of said bear
ing stem terminating in an arcuate bearing sure
face, a current collecting device for engaging the
trolley wire, said current collecting device being
adapted for relative movement at right angles to
45 said bearing stem simultaneously with rotation
therewith, a separate wear plate interposed be
tween the arcuate bearing surface of the bear
ing stem and the current collecting device, and
means including a single through bolt member
50 disposed to secure the current collecting device,
Wear plate and bearing stem in unitary relation.
13. A device for collecting current from a trol
ley wire comprising, in combination, a pole head
disposed to be carried by a trolley pole, a bear
55 ing stem mounted on said pole head for rotation
about a vertical axis, the upper end of said bear
ing stem terminating in an arcuate bearing mem
ber, a swivel inter?tting with said bearing stem
and disposed to rotate therewith, said swivel be
60
ing provided with an arcuate bearing surface for
engaging said arcuate bearing member to per
mit said swivel to also oscillate at right angles
relative to said bearing stem, a slider shoe for
engaging the trolley wire, an arcuate wear mem
65 ber positioned within said swivel, between the
arcuate bearing member and the slider shoe, and
means including a single transverse bolt mem
ber adapted to secure a unitary assembly of the
bearing stem, swivel, wear member, and slider
70 shoe.
14. A device for collecting current from a trol
ley wire comprising, in combination, a pole head
disposed to be carried by a trolley pole, a bearing
stem mounted on said pole head for rotation
about a vertical axis, the upper end of said bear
ing stem terminating in an arcuate bearing mem
ber, a swivel inter?tting with said bearing stem
and disposed to rotate therewith, said- swivel
being provided with an arcuate bearing surface
for engaging said arcuate bearing member to
permit said swivel to also oscillate at right an
gles relative to said bearing stem, a slider shoe 10
detachably secured in ?xed relation to said swivel
for engaging the trolley wire, and a bolt extend
ing transversely through said swivel and said
slider shoe for securing them together in mov
15
able relation with said bearing stem.
15. A device for collecting current from a trol
ley wire comprising, in combination, a pole head
disposed to be carried by a trolley pole, a bearing
stem mounted on said pole head for rotation
about a vertical axis, the upper end of said bear 20
ing stem terminating in an arcuate bearing sur
face, a current collecting device for engaging the
trolley wire and disposed to rotate with said stem,
a separate arcuate bearing plate interposed be
tween said bearing stem and said current collect 25
ing device and engaging said arcuate bearing sur
face, and means including a single through bolt
member disposed to secure the current collecting
device, bearing plate and bearing stem in a uni
tary assembly, thereby permitting said current 30
collecting device to oscillate relative to said stem
about an axis at right angles to the plane con
taining said vertical axis.
16. A device for collecting current from a
trolley wire comprising, in combination, a pole 35
head disposed to be carried by a trolley pole, and
a unitary assembly carried by the pole head com
prising, a bearing stem mounted on said pole
head for rotation about a vertical axis, the upper
end of said bearing stem terminating in an arcu
ate bearing member, a swivel inter?tting with
said bearing member and disposed to rotate
therewith, a slider shoe secured in fixed relation
to said swivel for engaging said trolley wire, a
separate arcuate bearing plate interposed be
tween said bearing member and said slider shoe
and engaging said arcuate bearing member,
thereby permitting said swivel, arcuate bearing
plate and said slider shoe to oscillate relative to
said stem about an axis at right angles to the 50
plane containing said vertical axis.
17. A device for collecting current from a
trolley wire comprising, in combination, a pole
head disposed to be carried by a trolley pole, a
bearing stem mounted on said pole head for ro 55
tation about a vertical axis, the upper end of said
bearing stem terminating in an arcuate bearing
surface, a swivel inter?tting with said bearing
stem and disposed to rotate therewith, a slider
shoe detachably secured in ?xed relation to said 60
swivel for engaging the trolley wire, a bolt ex
tending transversely through said swivel and said
slider shoe for securing them together, and a sep
arate arcuate bearing plate interposed between
said bearing stem and said slider shoe, being po
sitioned by said transverse bolt, and engaging
said arcuate bearing surface, thereby permitting
said swivel, arcuate bearing plate and said slider
shoe to oscillate relative to said stem about an
axis at right angles to the plane containing said 70
vertical axis.
SCI-IAAKE,
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