Improvements in Couplings for Railway Wagons and like Vehicles.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Couplings for Railway Wagons and like Vehicles.
GEORGE FREDERICK MARTIN, 154, Southampton Road, Eastleigh, Hants, Smith
and Fitter, do hereby declare the nature of this invention to be as follows:-
An improved shackle or link joint which combines in itself less friction and
greater ease of manipulation of the said shackle or link, when working on the
hook of drawbar.
In forming the ends of the shackle or link, elongated holes are made, and
on the inward sides of the link or shackle-facing the hook of drawbar-a pro-
jected rib is formed on each side of the holes, which rib may be rounded or
bevelled. To secure the link or shackle to drawbar-hook, I use either a bolt
and nut, or a parallel pin of iron or steel reduced at each end forming a collar
for the nut.
Dated this ofth
1900
I, GEORGE FREDERICK MARTIN, 154, Southampton Road, Eastleigh, Mechanic,
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 invention consists of an improved link or shackle combining in itself less
friction and greater ease of manipulation when working on the hook of draw-
bar to which it is attach: d.
In carrying out my invention, I make elongated holes in the ends of the
shackle, attached to an ordinary draw bar hook, and on each side of the holes
I form a projecting prismatic rib, which is suitably bevelled to allow of a lateral
movement of the coupling on sharp curves: I use an iron or steel disc between
the rib and the hook revolving on the bolt which secures the shackle to the hook
of draw-bar, in some instances where a jaw is used this rib can be placed on
the outer sides.
In my former invention A.D. 1885 No. 13,240 the rods and levers worked in
brackets attached to wagon, which manipulated the two coupling links in coupling
and uncoupling.
For the better manipulation of the coupling, I now use a carrier for the
rods and levers to revolve in, this said carrier revolving on a centre pin in a

page_text: bracket fixed to the buffer beam or under frame of wagon; I also claim the
use of this centre pin for a brake lever manipulator to revolve on.
For purposes of illustration, I will now refer to the annexed drawings in
which:-
Fig. 1 is a descriptive view showing projecting rib i on each side of the
elongated holen in the end of shackle.
Fig. 2 metal disc used between shackle & hook.
Fig. 3 view of arrangement of rod and lever carrier h revolving on a centre
pin in the bracket m for the better lateral movement of coupling on sharp
curves.
Fig. 4 shows side elevation of coupling when raised by the first lever to
position and then worked by second lever over the hook to couple.
Fig. 5 is a plan of the apparatus.
In both the figs. a indicates the first link which is elevated by the levers cc
into the position shown by Fig. 4 upon the revolution of the rod d to the left
carrying with it the second link b supported in the position shown by the pins 9 9
when upon the revolution of rod e to the left it is drawn by connecting levers f f
on to the hook; to couple the vehicles together. For uncoupling, the coupling is
assisted by the projection off the hook or the operation is reversed.
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 combined apparatus substantially as described and shown hereinbefore
and in the accompanying drawing for the purpose set forth.
2nd. A coupling joint consisting of an improved link end with prismatic
projections formed substantially as described and shown herein before and in
the accompanying drawing for the purpose set forth.
GEORGE FREDERICK MARTIN.