IMPROVEMENTS IN THE PERMANENT WAY OF RAILWAYS
Year: 1887

page_text: Date of Application, 18th Feb., 1887
Complete Left, 9th Nov., 1887
Complete Accepted, 17th Mar., 1883
FREDERICK ABBOTT DURNFORD, 39 Harvard Road, Hither Green Lewisham Kent,
Plasterer, do hereby declare the nature of my invention for IMPROVEMENTS IN THE
PERMANENT WAY OF RAILWAYS, to be as follows:-
:-
To substitute Iron and Composition, for Wooden Railway Sleepers, to combine, or
otherwise the Chairs to Sleeper, and a self Locking Key block to Chairs.)
The Sleeper is made of Rolled Iron or Steel, with a hollow groove, on which the
bottom of the Rail rests, from this hollow groove two dovetailed Slots are cut length-
wise in the Sleeper, for carrying the dovetailed peices for holding the Chair jaws, and
taughtening the Rail when in position.
At the bottom of the Sleeper to the extent of the inner side of the jaw rest for
Rail, is fixed a plate of Iron or Steel, on which the bottom of the hollow groove of
the Sleeper rests.
The Chairs is made of Iron or Steel, each Chair is made in three seperate parts,
each dovetailed and fitted in proper position as shewn in the drawing.
No. 1 which is the inner jaw of Chair, or side rest for the Rail, this has a
dovetailed peice at the bottom of it, that slides in the inner Slot of the Sleeper.
No. 2 is made with a dovetailed peice at the bottom of it, (the same as No. 1) on
this peice is a wedge shaped dovetailed peice which has a groove in it. This peice
made to slide in the outer Slot of the Sleeper.
No. 3 is the outerside Chair jaw rest for Rail, this is made to slide on the wedge
shaped dovetailed peice of No. 2.
No. 3 has a bolt or catch in it.
When No. 1 and No. 2 are fixed in the Slots of the Sleeper, the Rail is then placed
in position, when No. 3 is forced on the wedge shaped dovetailed peice of No. 2, the
bolt or catch in No. 3 falls in the groove of No. 2, when the whole becomes firmly
interlocked all together.
L
1
1
2 Th 1
1000

page_text: FREDERICK ABBOTT DURNFORD 39 Harvard Road Hither Green Lewisham Kent,
Plasterer. I do hereby declare the nature of my invention for IMPROVEMENTS IN THE
PERMANENT WAY OF RAILWAYS, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement :-
Reference is made to the drawings filed with the Provisional Specification.
The Sleeper is made of Rolled Iron or Steel, with a hollow groove on which the
bottom of the Rail rests, from this hollow groove two dovetailed Slots are cut length-
wise in the Sleeper, for carrying the dovetailed peices for holding the Chair jaws, and
tightening the Rail when in position.
At the bottom of the Sleeper to the extent of the inner side of jaw rest for Rail, is
fixed, a plate of Iron or Steel, on which the bottom of the hollow groove of the
Sleeper rests.
Each Chair is made in three seperate parts, cach dovetailed and fitted in proper
position.
No. 1, which is the inner jaw, or side rest for the Rail, which has a dovetailed poico
at the bottom of it, that slides in the inner Slot of the Sleeper.
No. 2, is made with a dovetailed peice at the bottom of it, (the same as No. 1,) on
this peice is a wedge shaped dovetailed peice which has a groove in it.
No. 3, is the outerside jaw rest for the Rail, this is made to slide on the wedge
shaped dovetailed peice of No. 2.
No. 3 has a bolt or catch in it, B.
When No. 1, and No. 2, are fixed in the Slots of the Sleeper, the Rail is then
placed in position, when No. 3 is forced on the wedge shaped dovetailed peice of No. 2;
the bolt or catch B in No. 3, falls in the groove of No. 2, when the whole becomes
firmly interlocked all together.
The locking part of the Chair jaw, is removed by a portable pin being put in a holo
in the side of the Chair jaw, and forcing the bolt or catch out of the groove.
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,
1st. The Sleeper as described with the plate A at the bottom of the same.
2nd. The method and apparatus for holding the Chair jaws, and the suitable and
simple manner in fixing, and removing the Chair jaws from the Sleeper.
3rd. The combination of dovetailed peices No. 1 and No. 2 for holding the Chair
jaws to the Sleeper, the wedge shaped dovetailed peice of No. 2, for fixing and
tightening No. 3 on, and the jaw No. 3, with the bolt or catch B in the same for
locking the Chair.
Dated this Eighth day of November 1887.
FREDERICK ABBOTT DURNFORD.