IMPROVED APPARATUS FOR MOVING AND LOCKING RAILWAY POINTS to be as follows
Year: 1884

page_text: I, CHARLES ADAMS of Brussels in the Kingdom of Belgium, but at present of
No 28 Southampton Buildings in the County of Middlesex, Engineer do hereby
declare the nature of my invention for "IMPROVED APPARATUS FOR MOVING AND
LOCKING RAILWAY POINTS to be as follows :-
"
My Invention relates to apparatus for moving railway points from one line to
another, for bolting the points home in each attitude, and for preventing them from
being moved while a train is passing over them, the whole of theso operations
being effected by a single set of connections from the operating point lever. For
this purpose, I join the two tongue rails which constitute the shifting points by a
cross bar, to one part of which is linked the arm of a bell crank lover and in
another part of which there is a notch or slot. Through or adjacent to this notch
or slot is fitted to slide a plate which has on it two projecting ribs at a distance
apart equal to the stroke made by the bar in shifting the points from the one line
to the other, but the one rib extends from one end of the sliding plate to near the
middle of its length, and the other rib extends from the opposito end of the plate
to near the middle of its length. The plate is jointed to one end of a sway beam,
the other end of which is linked to an arm of the bell crank above mentioned, and
the middle of the sway beam is connected to the rod which extends from the
operating point lever. When the points are home to one side, one of the ribs of
the sliding plate is engaged in the notch of the cross bar holding the points firmly
home. On now moving the point lever the middle of the sway beam is pulled or
pushed as the case may be; during the first part of its motion, the sliding plate
is slid, withdrawing its one rib from the notch of the bar, while its other rib
approaches the bar until it butts against it preventing the plate from moving
farther. But the rib being now withdrawn from the notch of the bar, the points
are free to move, and the sway beam by its continued movement now moves the
bell crank by which the points are shifted bringing the notch of the bar to face
the other rib of the plate, which is now slid into the notch holding the bar and
points in their changed position. To the operating rod I also connect the bar
which is usually arranged in the neighbourhood of points to prevent them from
being shifted while any wheel of a train is over this bar, and this has the effect of
preventing the movements above described, keeping the points firmly locked until
the train has passed clear away from the bar.
Dated this 11th day of Tanum 1001L
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C.

page_text: COMPLETE SPECIFICATION.
I, CHARLES ADAMS of Brussels in the Kingdom of Belgium but at present of
N° 28 Southampton Buildings, Chancery Lane, in the county of Middlesex,
Engineer do hereby declare the nature of my said invention for "IMPROVED
APPARATUS FOR MOVING AND LOCKING RAILWAY POINTS," and in what manner the
same is to be performed to be particularly described and ascertained in and by
the following statement :-
My invention relates to apparatus for moving railway points from one line to
another, for bolting the points home in each attitude and for preventing them from
being moved while a train is passing over them the whole of these operations
being effected by a single set of connections from the operating point lever. For
this purpose I employ apparatus arranged as shewn in the plan fig. 1 of the
accompanying drawings. I join the two tongue rails which constitute the shifting
points by a cross bar J, shewn in elevation at lig. 2, to one part of which is linked
the arm 9 of a bell crank lever G and in another part of which there is a notch or
slot j, cut upwards at j'. Through or adjacent to this notch or slot is fitted to
slide in a guide I a plate H, shewn in section at fig. 3, which has on it two
projecting ribs h, at a distance apart equal to the stroke made by the bar in
shifting the points from the one line to the other, but the one iib extends from one
end of the sliding plate to near the middle of its length, and the other rib extends
from the opposite end of the plate to near the middle of its length. The plaie H
is jointed to one end of a sway beam F, the other end of which is linked to an arm
of the bell crank G, and the middle of the sway beam is linked by a rod E to a
lever B worked by the rod A, which extends from the operating point lever.
When the points are home to one side as shown one of the ribs H2 of the plato H
is engaged in the notch. j holding the points firmly home. On now moving the
rod A by the point lever, the middle of the sway beain F is pulled or pushed as the
case may be; during the first part of its motion, the plate H is slid, withdrawing
its rib from the notch j', while its other rib approaches the bar J until it
butts against it, preventing the plate H from moving farther. But the rib h²
being now withdrawn from the notch j¹, the points are free to move and the sway
beam F by its continued movement now moves the bell crank G by which the
points are shifted bringing the notch to face the other rib ¹ of the plate H
which is now slid into the notch holding the bar and points in their changed
position. To the lever B worked by the operating rod A, I prefer to connect the
bar D which is usually arranged in the neighbourhood of points to prevent them
from being shifted while any wheel of a train is over this bar, and this has the
effect of preventing the movements above described keeping the points firmly
locked until the train has passed clear away from the bar D.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
For moving and locking a set of railway points by the movement of a single
rod, the combination of a sway beam jointed at its middle to the rod, with a
bell crank jointed to its one end for moving the points and with a bolting slide
jointed to its other end, arranged and operating substantially as herein described.
70
1981
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C