IMPROVEMENTS IN APPARATUS FOR LOCKING RAILWAY POINT AND SIGNAL LEVERS.” LOCKING RAILWAY POINT AND SIGNAL LEVERS.
Year: 1874

page_text: LETTERS PATENT to John Bailey, of the City of Dublin, Civil
Engineer, for the Invention of "IMPROVEMENTS IN APPARATUS FOR
LOCKING RAILWAY POINT AND SIGNAL LEVERS.”
LOCKING RAILWAY POINT AND SIGNAL LEVERS.'
Sealed the 16th October 1874, and dated the 17th April 1874.
PROVISIONAL SPECIFICATION left by the said John Bailey at the
Office of the Commissioners of Patents, with his Petition, on the
17th April 1874.
I, JOHN BAILEY, of the City of Dublin, Civil Engineer, do hereby
declare the nature of the said Invention of "IMPROVEMENTS IN APPARATUS
FOR LOCKING RAILWAY POINT AND SIGNAL LEVERS," to be as follows:-
My Invention consists of a series of running locks arranged in a frame
one behind the other, and actuated by means of flat cam rods attached
to the signal and point levers in the locking frame. These running locks
together with their frame are so notched out at intervals as to receive
the flat cam rods, which are also notched in order that, the running locks
may work in or out of them and so lock or release the same.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Bailey in the Great Seal Patent Office on
the 16th October 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BAILEY, of the City of Dublin, Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventeenth day of April, in the year
of our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said John Bailey, Her special licence that I, the
said John Bailey, my executors, administrators, and assigns, or such
others as I, the said John Bailey, my executors, administrators, and
assigns, should at any time agree with, and no others, from time to time
and at all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United King-
dom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "IMPROVEMENTS IN APPARATUS FOR LOCKING RAILWAY
POINT AND SIGNAL LEVERS," upon the condition (amongst others) that I,
the said John Bailey, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the same
to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that. I, the said John Bailey, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement thereof, reference being had to the accom-
panying Drawings, that is to say:-
My Invention consists of a series of running locks arranged in a
suitable frame, one behind the other, and actuated by means of flat cam
rods attached to the point and signal levers. These running locks
together with their frame are so notched out at intervals as to receive
the flat cam rods which are also notched where necessary in order that
the running locks may work in or out of them and so lock or release the
same.

page_text: The manner in which I carry my Invention into effect will be under-
stood on reference to the accompanying Drawings, Figure 1 of which is
a front elevation, and Figure 2, a side elevation of a locking frame, and
Figure 3, a plan on a larger scale shewing my running locks and cam
rods.
A is the locking frame; B, B, are the signal and point levers centred
at C in the ordinary manner; D, D, are the cam rods one end of which
is attached by means of pins to the corresponding levers B, B, while the
other ends work in a suitable frame E; F, F, are the running locks
arranged in the said frame E. These running locks and the cam rods
D, D, are so notched out, as will be seen on reference to Figure 3, that
the said locks work in and out of the cam rods and thereby lock or
release the same. For example when lever 1 is pulled the cam or incline
on the corresponding cam rod D pushes against the part a of the first
running lock F and thus moves this lock, so that the part b enters a
notch in the fifth cam rod and thereby locks lever 5. In like manner
lever 2 by acting against the part c causes cam rod 2 to move lock 2,
and thus withdraws the part d from cam rod 4 and thereby unlocks
lever 4. In the same way the movement of lever 3 locks lever 2 and
unlocks lever 1 (lever 1 on being pulled over back locks lever 3 by its
running bar F entering notch e), the movement of lever 4 locks lever 1,
and the movement of lever 5 locks lever 4.
It need hardly be mentioned that the locks and the notches in the
rods D must be arranged in accordance with the particular junction or
terminus for which the locking gear is constructed, as is the case with
other locking gear.
And having now described the nature of my said Invention and in
what manner the same is to be performed I declare that I claim, the
combination of the running locks and the cam rods, substantially in the
manner and for the purpose herein-before described.
In witness whereof, I, the said John Bailey, have hereunto set
my hand and seal, this Fifteenth day of October, One thousand
eight hundred and seventy-four.