AN IMPROVED CONSTRUCTION OF RAILWAY CHAIR
Year: 1862

page_text: PROVISIONAL SPECIFICATION left by Charles Rogers Heap at the Office
of the Commissioners of Patents, with his Petition, on the 15th April
1862. A communication from abroad by Antonio Gabrielli, residing
at Turin, in the Kingdom of Italy.
I, CHARLES ROGERS HEAP, of Great George Street, in the City of West-
minster, Agent, do hereby declare the nature of the said Invention for
"AN IMPROVED CONSTRUCTION OF RAILWAY CHAIR," to be as follows:-
This Invention relates to a novel construction of wrought-iron chair for
securing the rails of railways in position. The chair is composed of two
wrought-iron plates, one overlying the other. The under plate is made rect-
angular, and forms the base of the chair, and the upper plate, which is smaller,
lies across it diagonally, but so that its extremities extend to the ends of the
base plate. These plates are connected together by a central bolt, which
forms a pivot for them to turn on. The central bolt, when the chair is to be
fixed in position, passes through a central hole in the plates, and is driven
into a wooden sleeper intended to support the chair. The jaws of the chair
are formed by turning up portions of the sides of the two plates at right
angles. By this means each plate is furnished at its opposite edges with a
jaw, which jaws with the jaws of the other plate form pairs that are intended
to embrace the rail that is to be placed in the chair. Between the jaws of
the joint chair and the rail iron clamping pieces rolled so as to fit the web
and bottom of the rail are placed, and the abutting ends of two rails being

page_text: '
inserted therein they will be retained in position. The jaws of the chair are
closed upon the clamps or upon the rail, as the case may be, by turning the
upper plate on its centre, and when brought into position the grip of the
jaws is secured by driving through holes made in the lower plate, and into
the wooden sleeper below pins or bolts, which will bear against the diagonal
sides of the upper plate, and effectually prevent that plate from turning. For
the purpose of further securing the rails at their abutting ends projections
are formed on the inner face of the jaws of the joint chair, which projections
fit cavities cut in the sides of the foot of the rails, a portion of the clamps
being cut away for this purpose. The use of clamps and the provision for
preventing endway motion in the rails may be dispensed with in the inter-
mediate chairs.

page_text: PROVISIONAL SPECIFICATION left by Charles Rogers Heap at the Office
of the Commissioners of Patents, with his Petition, on the 15th April
1862. A communication from abroad by Antonio Gabrielli, residing
at Turin, in the Kingdom of Italy.
I, CHARLES ROGERS HEAP, of Great George Street, in the City of West-
minster, Agent, do hereby declare the nature of the said Invention for
"AN IMPROVED CONSTRUCTION OF RAILWAY CHAIR," to be as follows:-
This Invention relates to a novel construction of wrought-iron chair for
securing the rails of railways in position. The chair is composed of two
wrought-iron plates, one overlying the other. The under plate is made rect-
angular, and forms the base of the chair, and the upper plate, which is smaller,
lies across it diagonally, but so that its extremities extend to the ends of the
base plate. These plates are connected together by a central bolt, which
forms a pivot for them to turn on. The central bolt, when the chair is to be
fixed in position, passes through a central hole in the plates, and is driven
into a wooden sleeper intended to support the chair. The jaws of the chair
are formed by turning up portions of the sides of the two plates at right
angles. By this means each plate is furnished at its opposite edges with a
jaw, which jaws with the jaws of the other plate form pairs that are intended
to embrace the rail that is to be placed in the chair. Between the jaws of
the joint chair and the rail iron clamping pieces rolled so as to fit the web
and bottom of the rail are placed, and the abutting ends of two rails being

page_text: inserted therein they will be retained in position. The jaws of the chair are
closed upon the clamps or upon the rail, as the case may be, by turning the
upper plate on its centre, and when brought into position the grip of the
jaws is secured by driving through holes made in the lower plate, and into
the wooden sleeper below pins or bolts, which will bear against the diagonal
sides of the upper plate, and effectually prevent that plate from turning. For
the purpose of further securing the rails at their abutting ends projections
are formed on the inner face of the jaws of the joint chair, which projections
fit cavities cut in the sides of the foot of the rails, a portion of the clamps
being cut away for this purpose. The use of clamps and the provision for
preventing endway motion in the rails may be dispensed with in the inter-
mediate chairs.