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Патент USA US2129706

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saw. 13, 3938.
.
c. v. WHEY
fmw?o?
BOX SHELTERED THIRD RAIL AND SHOE
Filed Sept’. 30, 1956
.WI
5 WEE/2E7
Patented Sept. 13, 1938
2,1293% I
UNITED STATES PATET OFFI€E
2,129,706
BOX SHELTERED' THIRD‘ RAIL AND‘ SHOE
Charles V. Richey, Jamaica, N. Y., assignor to
Richey Special Third Rail Corporation, New
York, N. Y.
Application September 30, 1936, Serial No. 103,372
5 Claims. (Cl. 191—30)
This invention relates to an improvement in
the “third-rail” and shoe of an electric railway
system, in which the current for propelling the
cars is supplied to the cars through suitable con
Cl tacts or shoes in sliding contact with the rail.
The main object of the invention is to improve
the construction of the rail itself and also to im
prove the housing for the rail, so as to provide an
effective method of guarding it from the elfects
10 of weather and the accumulations of snow and
ice, and also to prevent contact with the con
ducting part of the rail by persons or animals
crossing or using the car track.
A further object of the invention is to provide
a box shelter third-rail constructed in such man
nor as to permit a broken shoe to drop‘ there
from.
Still another object of the invention is to pro
vide a contact shoe for use in third-rail systems,
20 adapted to prevent arcing and burning of the
shoe when passing over uneven face surfaces on
the third-rail, or over rail joints or other bumps
on the rail.
Other objects of the invention will become ap
25 parent as the detailed description thereof pro
ceeds.
In the drawing:
Figure 1 is a vertical cross section of one form
of my improved third-rail and‘ the protective
30
housing connected thereto;
Figure 2 is a fragmentary side elevation of a
third-rail shown in Figure 1, parts thereof being
broken away to illustrate details of construction;
Figure 3 is a fragmentary plan of a contact
shoe forming part of the present invention;
Figure 4 is a vertical transverse section of a
modi?ed form of third-rail;
Figure 5 is a] vertical transverse section of an
other modi?cation of said invention; and
4O
Figure 6 is a vertical transverse section of still
another form of the invention.
As shown in Figures 1, 2 and 3 of the drawing,
the invention comprises a conducting or third
rail 7, shaped throughout its length as a segment
45 of a cylinder. A web 8 projects radially from the
main body of the rail 1; and a contact face 9 is
formed on the main body, preferably at an angle
of 45° to the horizontal when the rail is in proper
position, to make contact with the ?ngers [0, H
50 and I2 of a contact shoe I3 extending from the
railroad car.
The entire surface of the rail 1, except the
inclined face 9, is covered with a sheet of insu
lation M. A protecting housing I5 extends around
55 the greater part of the rail 1 and terminates in
a flat part 16 which is substantially parallel to
the face 9 when the rail is in operative position.
The cover is supported in operative position by
means of brackets I’! (only one of which is shown
in the drawing) which are shaped to conform to
the shape of the rail 1 and its coverings. The
lower part of the bracket l1 extends around the
web 8 of the rail 7 and seats in a U-shaped recess
18 formed in a bracket l9 having ?anges extend
ing in opposite directions therefrom to seat on an
10
insulated block 20 in common use in third-rail
systems.
The blocks 26 are provided with apertures 2|
adapted to receive dowels 22 extending from the
bottom of the bracket Hi. The protective cover 15
l5 may be of wood or other suitable insulating
material; and is adapted to be secured in posi
tion by means of lag screws 23 extending through
the bracket H.
The rail forming the subject matter of the
present application is intended to replace the ex
posed rail now in common use. In order to fa
cilitate the change from the old to the new sys
tem, it is essential that the shoe 83 may be used
on the old rail R, as indicated in dotted line in
Figure 1, until the new rail is completely‘ installed
and in order that traiiic may not be interrupted
during the change from the old to the new system.
The ?ngers Hi, Ill and i2 form an extension of
and are pivotally connected to the free end of the 30
contact shoe i3; and springs 24 are arranged
at the joints between the shoe i3 and the con
tact fingers to cause said ?ngers to bear yielding
ly against the inclined face 9 of the new third
rail. This arrangement of the spring contact I
?ngers will compensate for any up and down or
lateral movement of the truck carrying the shoe;
and since there are three such ?ngers it is ob
vious that one of them, at least, will always be in
contact with the rail 1, so as to prevent spark 4-0
ing or burning of the shoe.
‘
It will be apparent from Figure 1 of the draw
ing that if the shoe l3 or any of the ?ngers sup
ported thereby should become broken, the broken
part will fall at once from contact with the third 4:5
rail. This will eliminate any possibility of danger
which would result from the jamming of a broken
shoe or any part thereof in a box sheltered third
rail.
The form of the invention illustrated in Figure 50
4 di?ers from that shown in Figure 5, only in
the bracket for supporting the housing H5 in po
sition on the third-rail. The bracket 25 in this
case comprises a cylindrical portion 26 conform
ing to the shape of the third-rail and the coverings 55
2
2,129,706
therefor. Lag screws 21 secure the portion 26 to
the cover [5. A strap 28 extends radially from
the-lower end of the cylindrical portion 26 of each
bracket; and terminates in a ?ange 29 adapted
to be suitably secured to the insulated block 20.
This bracket construction serves to brace the
third-rail against any lateral thrust resulting
from the pressure of the shoe ?ngers on the in
clined contact face.
10
In the form of the invention shown in Figure
5, the third-rail 38 is substantially cylindrical
throughout the greater part of its cross-sectional
area. A web 3| extends radially therefrom; and
a groove 32 is formed in the main body diametri
15 cally opposite to the web 3!. A sheet of insula
tion 33 is suitablysecured to the rail 30 and
covers the entire surface of said rail except the
inclined contact face 34.
A cover of wood or
other suitable insulating material 35 is shaped to
20 provide a tongue 36 extending into the groove 32
or the part thereof covered by the sheet 33.
A
cylindrical portion extends from the tongue 36
What I claim is:
1. In an electric railway system, a third-rail
suitably supported on the track and having a
contact face inclined upwardly and outwardly
with respect to the track, an arm extending from
a car of said system toward said rail adapted to
engage a second third rail, a contact ?nger pivot
ed to the end of said arm, and means for holding
said contact ?nger in yielding contact with said
inclined face.
10
2. In an electric railway system, a third-rail
suitably supported on the track and having a
contact face inclined upwardly and outwardly
with respect to the track, an arm extending from
a car of said system toward said rail adapted to
engage a second third rail, a plurality of contact
?ngers pivoted to the end of said arm and lying
normally in contact with said inclined face, and
means for forcing said ?ngers into yielding con
tact with said face.
3. In an electric railway system, a third-rail
suitably supported on the track thereof and hav
ing a contact face inclined upwardly and out
around part of the rail 30, and an inclined por
tion 3i is formed as a part of said cover parallel
wardly with respect to the track, a covering of
25 to the inclined face 34 of the rail 39. The web
3! with its covering 33 seats in a suitable bracket
insulating material supported by said third-rail
and spaced apart substantially parallel to said
38 adapted to be secured as usual to the insulated
blocks 20.
The form of the invention illustrated in Fig
ure 6 is the reverse of that shown in Figure 5.
In this case, the bracket 39 for supporting the
rail on the insulated block, comprises a base hav
ing a tongue 48 extending therefrom to seat in
the groove M formed radially
the insulated
35 third-rail 42. The upper part of the rail 132 is
provided with a tongue 43 adapted to receive the
inclined face, a shoe extending from a car of said
system toward said rail adapted to engage a
correspondinglygrooved part 44 of the protect~
ing hood or cover 45. The hood 45 is provided
with an inclined part 46 which is spaced apart
parallel to the inclined face 437 of the rail 42
when the parts are properly assembled in opera
second third rail, and a contact ?nger pivoted to
the end of said shoe and extending into the space 30
between said inclined face and covering, and
means for forcing said ?nger into yielding con
tact with said inclined face.
4. In an electric railway system, a third-rail
suitably supported on the track thereof, and hav 35
ing a contact face inclined upwardly and out
wardly with respect to the track, an arm extend
ing from a car of said system toward said rail
adapted tov engage a second third rail, a plu
rality of contact ?ngers pivoted to the end of 40
said arm, yielding means for holding said ?ngers
tive position.
independently in yielding contact with said in
In the forms of the invention illustrated herein
the webs on the third-rails constitute stiffening
clined face, and a protecting cover of insulating
material extending over said rail and having a
ribs which make the whole structure rigid. In the
part thereof substantially parallel to the inclined 45
. forms of the invention illustrated in Figures 5
and 6, rails with grooves at both top and bottom
would be better for the purpose of insulation.
However, this construction would weaken the rails
50 unduly. Therefore, I prefer the form in which a
stiffening rib or web is used.
It is to be understood that the invention is not
to be considered as limited to the speci?c con
struction and arrangement described herein, since
55 it is evident that many changes may be made
without departing from the scope of the inven
tion as de?ned by the claims appended hereto.
face of said rail.
5. In an electric railway system, a third-rail
suitably supported on the track and having a
contact face inclined upwardly and outwardly
with respect to the track, a protective cover ex
50
tending in spaced apart relationship to said in
clined face, and an arm adapted to engage a sec
ond third rail extending from a truck of said
system and having a shoe in yielding contact with
said inclined face.
55
CHARLES V. RICHEY.
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