IMPROVEMENTS IN THE MANUFACTURE OR CONSTRUCTION OF GATES AND FENCES, PART OF WHICH INVENTION IS APPLICABLE TO STRAINING WIRES AND TO OTHER STRAINING PURPOSES
Year: 1867

page_text: PROVISIONAL SPECIFICATION left by George Rich Turner and William
Thomas Allen at the Office of the Commissioners of Patents, with their
Petition, on the 6th June 1867.
We, GEORGE RICH TO..., and WILLIAM THOMAS ALLEN, of Upper Thames
Street, in the City of London, Engineers, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN THE MANUFACTURE OR CONSTRUCTION
OF GATES AND FENCES, PART OF WHICH INVENTION IS APPLICABLE TO STRAINING
WIRES AND TO OTHER STRAINING PURPOSES," to be as follows:-
Our Invention relates, firstly, to gates, and consists in combining with end
uprights formed of T, angle, or tube iron, or other iron or metal of sufficient
strength to bear the resistance of the intermediate portion of the gate, and
with one or more intermediate rails, likewise of the necessary strength, hori-
zontal bands, or strips of hoop iron, or other suitable metal or strands, wires, or
wire rods, such bands, strips, strands, wires, or rods being strained or drawn to
a tension and kept or secured round, through, or against the ends, or from end
to end, whereby we are enabled to make gates as strong as ordinary gates,
which have intermediate rails of three times the thickness and weight or
more.
In carrying out this part of our Invention we take two end pieces of, say,
T, angle, or tube iron, and we secure to one of these pieces one end of the
bands, strips, or other material, and we then strain the opposite end round
through, upon, or against the other piece, which may also be used to carry or
hang the gate at the bottom. In addition to these intermediate bands or strips

page_text: we employ one or more intermediate rails (with or without an additional vertical
piece) of sufficient strength to bear the resistance of the others, and the end
piece round which these others are strained may after the straining be secured by
pins or otherwise to these stronger pieces so as to hold the whole in place. We
also in some cases add diagonal pieces, preferably of strained bands or other
strained material.
Our Invention consists, secondly, in straining or producing a tension in the
strands, cords, wires, wire rods, bands, or strips in gates and fences, so that the
strain of one strand or other length counteracts the strain of another strand
or length, the strain being kept equally divided, whereby we ensure that the
straining post is always kept upright, and no extra provision is required to bear
'the resistance of the strands or other lengths.
In carrying out this part of our Invention we pass the strands, wires, or
other lengths over or through rollers, barrels, or pulleys provided with any
convenient contrivance by which rotary motion may be given to them; or the
ends of the strands or wires may be secured in or upon the rollers, barrels, or
pulleys, and by rotating these latter the strands or wires may be strained or
slackened as required. We employ two of these rollers, barrels, or pulleys
on the same axis or spindle, and we provide them with teeth to catch or lock
into each other; these teeth cause the two rollers to revolve in opposite
directions, so that as the strand or wire connected with one roller is strained
that connected with the other wire is strained to an equal degree.
We do not limit ourselves to the employment of rollers, barrels, or pulleys
for straining the strands, wires, or other length as the straining may be effected"
by short levers for each alternate strand, wire, or other length.
The characteristic feature of this. part of our Invention being that the strain
or tension of one strand, wire, or other length is made to counteract the strain
or tension of another strand, wire, or other length.
The second part of our Invention is also applicable to straining wires and
to other straining purposes.