Improvements in Colliery Tram and other Car Couplings.
Year: 1894

page_text: Date of Application, 28th Sept., 1894
Complete Specification Left, 13th Mar., 1895-Accepted, 13th Apr., 195
PROVISIONAL SPECIFICATION.
Improvements in Colliery Tram and other Car Couplings.
1, JOHN SHEARN of New Tredegar Colliery, Cardiff, Mechanic, do hereby
declare the nature of this invention to be as follows:-
This invention relates to a coupling or shackle especially intended for use with
trams used in colleries, and has for its object to provide a coupling which can be
used without danger of breaking or becoming detached.
Accidents in mines commonly occur owing to the breaking of this shackle,
allowing the tram cars to run down inclines and cause collisions. The shackle
I propose to employ consists of two strong jaws fixed on the ends of the cars.
connected together by a stout link. The jaws are fitted to the cars by a stout pin
at the ends passing through a hole in each side of the jaw.
To prevent the jaws opening, which is the cause of many accidents, I fit at a
short distance from the fastening pin and between it and the link a strong rivet,
extending across the two arms and strengthen them. The holes in the jaw are
countersunk, and the heads of the rivet lie in the countersunk holes.
Dated this 28th day of September 1894.
GEO. H. RAYNER,
37, Chaucery Lane, London, W.C., Agent for the Applicant.
Improvements in Colliery Tram and other Car Couplings.
I, JOHN SHEARN, of New Tredegar Colliery, Cardiff, 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 relates to a coupling or shackle especially intended for use with
trams used in colleries, and has for its object to provide a coupling which can be
used without danger of breaking or becoming detached.
Accidents in mines commonly occur owing to the breaking of this shackle,
allowing the tram cars to run down inclines and cause collisions. The shacklo
I propose to employ consists of two strong jaws fixed on the ends of the care,
connected together by a stout link. The jaws are fitted to the cars by a stout pin
at the ends passing through a hole in each side of the jaw.
To prevent the jaws opening, which is the cause of many accidents, I fit at a
short distance from the fastening pin and between it and the link, a strong rivet,
extending across the two arms and strengthening them. The holes in the jaw are
countersunk and the heads of the rivet lie in the countersunk holes.
In order that the invention may be more clearly understood reference is had to
the accompanying sheet of drawings, in which Fig. 1 is a plan of the improved
coupling and Fig. 2 is a side view.
A is the jaw, fixed to each car, by means of the large pin B at the end, passing
DOJ7

page_text: through suitable perforations in each arm of the fork or jaw. The end or loop a of
the jaw is made preferably of circular form and of smaller diameter than the other
part and the link C of ordinary shape, is fitted to this part connecting the cars
together.
At the middle of the jaws between the pin B and the loop a, the rivet D is fitted,
having the heads d which lie in the countersunk holes a¹ in the sides of the jaw.
These holes are countersunk, so that the rivet heads will engage with the jaw and
will bind the arms together, resisting any strain tending to open them.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
(1) In a coupling for colliery trams and like cars, the combination with jaws
fitted to the ends of the cars and a link connecting the said jaws, of a stout rivet
binding the sides of the jaws together, substantially as described and for the
purposes specified.
(2.) The improved coupling for colliery tram and like care, constructed and
operating substantially as described and shown in the accompanying drawings and
for the purposes specified.
Dated thic 13th dor of March 1805
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.