IMPROVEMENTS IN RAILWAY FROGS
Year: 1883

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex for an
Invention of IMPROVEMENTS IN RAILWAY FROGS a communication to him
from abroad by William James Morden, of Chicago, Illinois, United States of
America
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at
the Office of the Commissioners of Patents on the 13th March 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex, "IMPROVEMENTS IN
RAILWAY FROGS," a communication to me from abroad by William James Morden,
of Chicago, Illinois, United States of America,
This invention relates to improvements in that class of railway frogs made by
connecting the outer or wing mails with a solid point formed or cast in a single
piece. In making frogs of this class heretofore, it has been the custom to use filling
pieces between the outer or wing rails and the point, for the purpose of separating
the same and keeping them at the proper distance apart, and to secure the whole
together by means of bolts passing entirely through the several parts.
The object of this invention is to provide a simpler, less expensive and more
durable frog than heretofore by dispensing with the filling pieces, and the
necessary labour and fitting thereon, and removing the shearing strain to which
the bolts when extended entirely through the frog are subjected by the car wheels
in passing from one rail to the other.
.
This invention consists in constructing the point with wings or flanges formed
on each side thereof and shaped to conform to the lower part or shank of the outer
or wing rails to which they are secured by bolts or otherwise
The centre piece or point is provided with a shank and may be made of any
suitable material. The wings may be made separate if desired, and secured to the
base of the point by bolts, rivets or otherwise, but I prefer to make the centre
piece with its flanges of one piece of cast steel in a single piece with the sides and
top thereof conforming in shape as near as possible to the ordinary rail with a
plain flat base
The said wings are connected together at the point end by pieces or braces cast
or made in one piece with the wings and serving to strengthen said wings and hold
the frogs firm; at the other end of the wings are similar pieces connecting each
flange or wing with the main body of the point

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Herbert John Haddan in the Great Seal Patent Office on the
13th September 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex "IMPROVEMENTS IN
RAILWAY FROGS," a communication to me from abroad by William James Morden,
of Chicago, Illinois, United States of America
This invention relates to improvements in that class of railway frogs made by
connecting the outer or wing rails with a solid point formed or cast in a single
piece. In making frogs of this class heretofore, it has been the custom to use
filling pieces between the outer or wing rails and the point, for the purpose of
separating the same and keeping them at the proper distance apart, and to secure
the whole together by means of bolts passing entirely through the several parts.
This invention consists in constructing the point with wings or flanges formed on
each side thereof and shaped to conform to the lower part or shank of the outer or
wing rails to which they are secured by bolts or otherwise.
The object of this invention is to provide a simpler, less expensive and more
durable frog than heretofore by dispensing with the filling pieces, and the necessary
labor and fitting thereon, and removing the shearing strain to which the bolts when
extended entirely through the frog are subjected by the car wheels in passing from
one rail to the other. In the accompanying drawings Fig 1 is a perspective view
of the improved frog-Fig 2 is a transverse sectional view of the same. Fig 3 is a
perspective view of the point or centre piece with the wing or flange pieces formed
thereon shown in detail.
In the drawings similar letters of reference refer to similar parts throughout the
several views
A A are the outer or wing rails which are bent in the ordinary manner to the
desired angle, B B are centre or point rails; and C the centre piece or point.
This centre piece or point C may be made of any suitable material and may be
either cast, forged, rolled or swaged into the desired shape and thickness.
The wings a a may be made separate if desired and secured to the base of the
point C-by bolts, rivets or otherwise, but I prefer to make C with its flanges a a of
one piece of cast steel cast in a single piece with the sides and top thereof
conforming in shape as near as possible to the ordinary rail with a plain flat
base b but I do not wish to be limited to this particular construction. When the
frog is completed the point C with wings a a rests upon the lower inner flange of
the wing rails A. A and when in use has an additional bearing on the cross ties,
sills or other formation. On each side of the centre piece C at the base bare
formed wings or flanges a a shaped to conform to the top of the flange and shank
of the wing rails A A and secured to the same by bolts c passing through said
wings a and the shank of the rails or in any other suitable manner. The sides of
wings a a at the point end are connected together by pieces or braces h and cast
or made in one piece with a a serving to strengthen said wings and hold the frogs
firm; at the other end of the wings a a are pieces h¹ similar to h except that they
connect each flange or wing a a with the main body of the point Ċ ; h¹ is also
made in one piece with a these pieces h and h¹ form a trough, the top edge being
almost on a level with the top of the frog proper.
The inner rails B B are secured to the shank C¹ of the centre piece C, each side
of which conforms to the shape of the rail, by bolts e e which extend through both
rails and said shank C. Fish plates may be placed on the sides of B B through
which the bolts e e pass,

page_text: CLAIMS.
First In a railway frog, a centre piece or point, O, provided with wings or
flanges a a and connecting pieces h and h¹ all in one piece, substantially as
described and shown.
Second-In a railway frog, a centre piece or point C provided with wings a a
having connecting pieces h h all cast or made in one piece in combination with
and secured to the wing rails, substantially as shown and described.
Third In a railway frog, the combination with the wing rails A A and point
rails B B, of the centre piece or point, C, having shank C¹ and trough shaped wings
or flanges a a substantially as shown and described.
In witness whereof I the said Herbert John Haddan have hereunto set my
hand and seal this 13th day of September A.D. 1883.
TT T
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