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Патент USA US2116495

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May 10, 1938.
H, E_ ADAMS
2,116,495
SWITCH CONSTRUCTION
Filed Deo. 1, 1936~
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May 10, 1938..
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H. E. ADAMS
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swITcH CONSTRUCTION
Filed Dec. l, 1956
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May 10, 1938.
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H_ E. ADNWS>
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SWITCH CONSTRUCTION
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2,116,495
Patented May 10, 1938
UNITED STATES PATENT OFFICE
2,116,495
SWITCH CONSTRUCTION ~
Herman E. Adams, Paducah, Ky.
Application December 1, 1936, Serial liìl’o‘ï‘l 113,674
3 Claims. (Cl. 246-285)
threaded plug 2D disposed therein. The threaded
This invention pertains to new and useful im
portion ZI of the yoke 9 is engaged into the plug
provements in railway switches.
The principal object of the present invention I9, which plug is provided with a polygonal ex
is to provide improvements in switches whereby tension 22 and a jam nut 23 on the threaded
5 splitting of the switch when rolling stock is trail
ing the points thereof is prevented.
Another important object of the invention is
to provide an adjunct for switches whereby when
the cars of a train pass over the switch points,
10 the trailing direction, the points are shifted to
the opposite rail from that which they are lined
from the switch stand.`
Another important object of the invention is
to provide an automatic device of this character
l5 which will be positive acting and not susceptible
to the ready development of defects.
These and various other important objects and
advantages of the invention will become apparent
to the reader of the following specification.
20
In the drawings:
'
Figure 1 represents a top plan view of the irn
proved switch.
'
Figure 2 is a side elevational View of the at
tachment.
25
Figure 3 is a longitudinal sectional View through
the attachment.
Figure 4 is a cross sectional view on line 4-4
of Figure 3.
Figure 5 represents an enlarged fragmentary
30 longitudinal sectional view through the interme
diate portion of the barrel of the attachment.
Figure 6 is a side elevational View with parts
broken away showing the thrust bar of the switch.
Figure 7 represents a side elevational view partly
35 in section of the bridle bar connecting yoke.
Referring to the drawings wherein like numer
als designate like parts it can be seen in Figure l
that numerals 5-5 represent the rails of a rail
way. Numerals 6_6 represent rails of a branch
40 line and to the ends of these rails 6--6 are pivot
ally connected the switch points 'I-I which are
actuated by the bridle bar 8. This bridle bar 8 is
engaged into the yoke 9 and connected by a pin
at IIJ thereto.
45
Figure 1 also shows the attachment which is
generally referred to by numeral II. The usual
switch box I2 has the switch operating lever I3
and from the box I2 extends the shaft I4 which
is pivotally connected at I5 to the yoke I6 of the
thrust bar I1.
Figure 3 shows the attachment which is gener
ally referred to by numeral II and consists of
the barrel I8 one end of which has the plug I9
55 screwed therein while the opposite end has a
shank 2| can be engaged with the plug I9 to pre- 5
vent any self adjusting of this connection.
The thrust rod I'I is slidably disposed through
the plug 20 and has the elongated cylindrical
body 24 secured to its inner end.
The cylindrical body 24 is provided With a pair 10
of longitudinally extending channels 25 for re
ceiving the longitudinally extending ribs 26 on the
inside of the barrel I8. These ribs and grooves
25 serve to prevent rotation of the body 24 in
the barrel.
15
At the intermediate portion of the body 24 a
circumferentially extending groove 21 is formed
for receiving a pair of arcuate shaped keepers
28--28 the same being provided with bevelledl side
portions 29 so that the same can readily slip 20,
into or out of the circumferentially extending
channel-way 30 on the inside of the barrel I8.
Each of these arcuate shaped keepers 28 is provided with an inwardly disposed stud 3| extend-4
ing into a diametrically extending bore 32` of 25
the cylindrical body 24 and is clearly shown in
Figure 4, a coiled compression spring 33 is located
in this bore 32 with its end convolutions engaging
over the stud 3| and bearing against the arcuate
shaped members 28 so that they are held normally 30
in the channel-way 30 of the barrel I8.
It can now be seen, that when the trucks of
the cars hit the points 'I-I, the pressure shifts
the before described clutch from dead center, that
is allows the arcuate members 28-28 to disengage 35
from the channel-way 30 so that the cylindrical
body 24 is free to shift, this allowing passage of
the car trucks over the switch point. Springs
34-34 are provided between the opposite ends of
the eyiindrien body 24 and the said plugs ls-zn 40
so as to equalize the position of the body 24 in
the barrel I8.
While the foregoing specification sets forth
the invention in specific terms, it is to be under 45
stood that numerous changes in the shape, size
and materials may be resorted to without depart
ing from the spirit and scope of the invention
as is claimed hereinafter.
What is claimed isz
1. In combination with the switch points of 5°
a switch and means for throwing the same, a
clutch positioned between the switch points and
the throw means whereby the switch points are
permitted to shift when cars pass over the switch '
trailing points, said shifting being independent 55
2,116,495
of the throw means, said clutch comprising a
barrel, a rod slidable into the barrel and being
connected at its outer end to the throw means,
said switch points being connected to the barrel,
a body on the inner end of the said rod, spring
pressed interengaging means between the body
and the barrel normally restraining the body and
barrel against relative movement, said barrel
being actuated by pressure on the switch point for
10 movement relative to the body.
2. Infcombination with the switch points of
a switch and means for throwing the same, a
clutch positioned between the switch points and
the throw means whereby the switch points are
15 permitted to shift when cars pass over the switch
trailing points, said shifting being independent
being actuated by pressure on the switch point
for movement relative to the body, and equaliz
ing means between the ends of the body and the
ends of the said barrel.
3. In combination with the switch points of a
switch and means for throwing the same, a clutch
positioned between the switch points and the
throw means whereby the switch points are per
mitted to shift when cars pass over the switch
trailing points, said shifting being independent 10
of the throw means, said clutch comprising a
barrel having an internal annular groove, a rod
slidable into the barrel and being connected at
its outer end to the throw means, said switch
points being connected to the barrel, a body on 15
a body on the inner end of the said rod, spring
the inner end of the said rod, spring projected
shoes carried by the body and seated in said
groove for normally restraining relative move
ment between the barrel and body, said barrel
being actuated by pressure on the switch point, 20
pressed interengaging means between the bodxr
and the body for preventing rotation of the body.
of the throw means, said clutch comprising a
barrel, a rod slidable into the barrel and being
connected at its outer end to the throw means,
20 said switch points being connected to the barrel,
and the barrel normally restraining the body and
`barrel against relative movement, said barrel
and tongue and groove means between the barrel
HERMAN EL ADAMS».
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