IMPROVEMENTS IN AND RELATING TO THE MANUFACTURE OF SERRATED WEDGES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
WILLIAM POLLARD and JAMES POLLARD Jun' both of Atlas Iron works
Burnley in the County of Lancaster Machinests, do hereby declare the nature
of our Invention for "IMPROVEMENTS IN AND RELATING TO THE MANUFACTURE
OF SERRATED WEDGES, to be as follows:-
Our Invention relates to an Improved wedge, suitable for wedging adjusting
and packing purposes. The said wedge is cast in metal with one or both sides
serrated in such a manner that the same may be easily driven forward but not
readily withdrawn Two wedges thus constructed may be driven one over the
other and act as a folding Wedge.
THOMAS. RICHMOND,
Agent for the Applicants.

page_text: I WILLIAM POLLARD, and JAMES POLLARD Jun both of Atlas Iron Works
Burnley in the County of Lancaster, Machinests, do hereby declare the nature
of our invention for "IMPROVEMENTS IN AND RELATING TO THE MANUFACTURE
OF SERRATED WEDGES," 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 the construction of an Improved wedge, which is
cast in metal with serrations or indentations on one or both of its pressing
surfaces, similar in shape to the teeth of a saw much lengthened but of short
depth. This wedge is annealed or made malleable to prevent brittleness, and may
be used for a variety of purposes, including the permanent way of railways, and
also as a means of securing hammer heads and the like to shafts or handles; when
used as a means of securing the wooden key in the chair of the permanent-way,
the wedge is cast with a gib-head or stop-piece, and only one serrated surface.
This wedge is inserted between the wooden key and the inner surface of the jaw
of the chair, and driven in a contrary direction to the key, until its gib-head or
stop-piece bears against the jaw, thereby preventing all endway motion of the key
under the vibration of the rail, whilst the serrations of the wedge entering the
wooden key, defy the possibility of separation; or the metal wedge cast with
serrations or indentations on one or both of its pressing surfaces, as herein before
described, may be forcibly driven into the end of the wooden key, and whilst
assisting in wedging the key firmly against the jaw and rail, is held in its place
by the serrations on its surface embedding themselves in the wooden key. In this
manner hammer heads and like may be secured to their respective shafts or
handles; or two serrated wedges may be used for this purpose, one of the wedges
is inverted in a slit formed in the end of the shaft, which is then passed into the
head of the hammer, and secured by driving in the other wedge, both wedges are
held together by the serrations on the surface of one wedge, engaging with those
on the other.
Having now described the nature of our said Invention, and the manner of
carrying the same into practical effect, we wish it to be distinctly understood
that we claim :-
Firstly the application of a serrated wedge with a gib-head or stop-piece to the
permanent way, as described and set forth.
Secondly the application of two serrated metal wedges, as a means of securing
hammer heads and the like to shafts or handles.
Thirdly serrated wedges cast in metal and annealed or made malleable, as
described and set forth.
THOMAS RICHMOND,
Agent for the Applicants.