Improvements in Means for Operating Railway Signals and the like
Year: 1895

page_text: Date of Application, 13th May, 1895
Complete Specification Left, 5th Feb, 1996-Accepted, 9th May, 1896
PROVISIONAL SPECIFICATION.
Improvements in Means for Operating Railway Signals and
the like
WALTER THOMPSON 23 Mackbeth Street Stanley Road Kukdale Liverpool
Signal Fitter do hereby declare the nature of this invention to be as follows:-
This apparatus is for fixing at the foot of the signal post in the connecting rod
which works the signal so that the signal can be worked as is required by the
Board of Trade viz. that the signal shall come off only after the last man has
pulled his lever & that each man shall be able to put the signal on
It consists of a pair of perpendicular bars each cut away at the top portion so
as to form an elbow (in which is placed a pulley to reduce friction) to allow a third
bar connected to the signal arm to rest in between & on the elbows.
At the end of this third bar is placed a roller capable of travelling to either side
in a horizontal slot
The three bars are so guuled as to be only capable of up & down motion
The two bars with cut away portions are each connected to different places &
are placed at such a distance from each other that the roller at the end of the
third bar cannot fit in between them except where one is cut away or of course
where both are cut away.
The normal position of the bars is that the elbows in the pair of bars are at the
same level with the roller in the horizontal slot resting on thein & in between the
top portions of the bars.
The mode of working is as follows,
When one of the bais (it does not matter which) is pulled it works upwads &
forces the travelling roller in the end of the signal bar against the other bar &
above the elbow in it, this allows the elbow of the bar to pass the roller & to travel
to the end of its stroke When the other bat is pulled there not being space
enough for the travelling roller to fit in between the bar the travelling roller '8
forced upwards by the elbow of the moving bar & so takes the signal off
When the signal is off if either of the bars is lowered the travelling roller 18
forced by the elbow of the other bar (the elbow not being as wide as the radius of
the travelling roller) onto the elbow of the moving bar & is lowered with it putting
the signal to danger.
By placing two or more slots above each other it can be connected to three or
more places
Dated 1: Och d
A 190
the like.
WALTER THOMPSON 23 Mackbeth Street Stanley Road Kirkdale Liverpool
Signal Fitter do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement
-
This apparatus is for fixing at the foot of the signal post in the connecting rod

page_text: which works the signal so that the signal can be worked as is requned by the
Board of Trade viz. that the signal shall come off only after the last man has
pulled bis levet and that each man shall be able to put the sigual on.
It consists of a pair of perpendiculai bars A'A" each cut away at the top
portion so as to form an elbow B (in which may be placed a pulley to reduce
friction) in the middle of each bar to allow a third bar C connected to the
signal arm to rest on the elbows B' B" and in between the top portions of the
bars A'A"
At the end of this third bat C is placed a roller E capable of travelling to either
side in a horizontal slot D.
The three bais are so guided as to be only capable of up and down motion.
The two bais A'A" with cut away poitious are each connected to different
places and are placed at such a distance from each other that the roller E at the
end of the third bat C cannot fit in between them except where one is cut away or
of comse where both are cut away.
The normal position of the bars is that the elbows B B in the pan of bars A¹ A"
are at the same level with the roller Em the slot Diesting on them and in between
the top portions of the bars
The mode of working is as follows
When one of the bats (it does not matter which) A' is pulled it works upwards
and forces the travelling roller in the end of the signal bar Con one side
against the other bai A" and above the elbow B in it, this allows the elbow B¹
of the moving bai A' to pass the roller Daud to travel to the end of its stroke.
When the other bar A" is pulled there not being space enough for the travelling
rolle E to fit in between the bars A'A" the travelling tolle E is forced
upwards by the elbow B" of the moving bai A" and so takes the signal off.
When the signal is off, if either of the bais A' 16 lowered the travelling roller E
18 forced by the elbow B of the other bar A" (the elbow not being as wide as the
radius of the travelling toller E) on to the elbow B' and is lowered with it putting
the signal to danger.
This apparatus may be fixed in any convenient position vertical houzontal or at
any angle
The Figure No respresents the normal position
No. 2 shews one of the bars A" pulled or when both have been pulled and one
bar A lowered again
No. 3 shews both bats pulled and the signal off.
No. 4 shews a combination of slots working from three-places connected to the
bars AAA with clbows B'B" B" and "another elbow 13 in the bar C for
working the travelling roller E" in the slot D" and the signal bar C",
Having now particularly described and ascertained the nature of my said tuven
tion and in what manner the same is to be performed I declare that what I
claim is
The mechanical contrivance of apparatus consisting of sliding bars together with
a travelling tollet working to either side in a slot or on a slide or between slides
substantially as described for operating signals and the like.
Dated this Fourth day of February 1896.
WALTER THUMI SON.