IMPROVE- MENTS IN FISH PLATES AND FASTENERS FOR RAILWAYS AND TRAMWAYS
Year: 1885

page_text: and Tramways.
I GEORGE HOPKIN WELLS of 48, Monmouth Street Sheffield in the County of
York Coach Smith do hereby declare the nature of my invention for "IMPROVE-
MENTS IN FISH PLATES AND FASTENERS FOR RAILWAYS AND TRAMWAYS" to be
as follows:-
The object of my Invention is to effect an improvement in the present form and
adaptation of Fish Plates or joint Fasteners where used for holding together the
Rails of Railways or Tramways, whereby a firm and more permanent fastening of
the Rails together and support of same is secured.
.
To effect this, I make the holes or bore saine slightly higher or lower through
the Fish Plate than the corresponding holes in the Rail, and a cross-pin or bolt,
slightly tapered at one end, is driven through the hole, and by this method, a draw
joint or draw bolt action is obtained, whereby the Rail and the Fish Plate are
drawn closely together, and a firm grip obtained, or the parts may be liberated by
driving out the Bolt.
I sometimes slightly alter the shape or size of the Fish Plate, so as to adapt
it for above purpose, but in all cases, the only object and application of my
Invention, is, by means of the different positions of the holes, as above mentioned,
to provide such a pressure or strain upon the cross-pin or bolt, on same being
driven in, as to make the same firm and immoveable.
I usually make only the two centre holes in the Fish Plate, ás above described,
the tapered bolts being in all cases driven in simultaneously, but in some cases
I shape all the holes correspondingly..

page_text: 1
I GEORGE HOPKIN WELLS of 48, Monmouth Street Sheffield in the County of
York Coach Smith 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 :—
The object of my Invention is to effect an improvement in the present form and
adaptation of Fish Plates or Joint Fasteners where used for holding together the
Rails of Railways or Tramways, whereby a firm and more permanent fastening of
the Rails together and support of same is secured.
To effect this, I make the holes or bore same slightly higher or lower through
the Fish Plate than the corresponding holes in the Rail, and a cross pin or bolt
slightly tapered at one end is driven through the holes, and by this method a draw
joint or draw bolt action is obtained, whereby the Rail and the Fish Plate are
drawn closely together and a firm grip obtained, or the parts may be liberated by
driving out the Bolt.
"
I sometimes slightly alter the shape or size of the Fish Plate so as to adapt it
for above purpose, but in all cases the only object and application of my Invention,
is, by means of the different positions of the holes, as above mentioned, to provide
such a pressure or strain upon the cross pin or bolt, on same being driven in, as to
make the same firm and immoveable.
I usually make only the two centre holes in the Fish Plate as above described,
the tapered bolts being in all cases driven in simultaneously, but in some cases
I shape all the holes correspondingly using the like Bolts throughout.
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 :-
An improved method of boring the holes in Fish Plates and Rails where fastened
together by same respectively, by making two or more of such holes higher or
lower in the Fish Plate than in the Rail, with slightly tapered Bolts to be used
for same, whereby the parts are drawn closely together and a firm grip and support
by means of the draw joint or draw bolt action, is obtained, as above described.
Dated this thirtieth day of April 1886.