IMPROVEMENTS IN MACHINERY OR APPARATUS FOR MANUFACTURING OR PRODUCING PILED GOODS OR FABRICS
Year: 1854

page_text: PROVISIONAL SPECIFICATION left by James Bradbury and John Bradbury
at the Office of the Commissioners of Patents, with their Petition, on the
30th September 1854.
We, JAMES BRADBURY and JOHN BRADBURY, both of Dentou, in the County
of Lancaster, Machinists, do hereby declare the nature of the Invention for
"IMPROVEMENTS IN MACHINERY OR APPARATUS FOR MANUFACTURING OR PRODUCING
PILED GOODS OR FABRICS," to be as follows:-
Our improvements apply, first, to the hand loom, wherein piled goods are
woven upon double grounds. The novelties consist in the adaptation of tappets
for the purpose of working the healds, as well as communicating motion at
the same time and from the same source to the "winding-on" roller. The
method by which we obtain these ends is by fixing to the treadles two vertical
arms, each having an indentation, which gears into their respective crown
wheels. Above and between the treadles is a small bowl, over which a strap
runs, secured at each end to either treadle, so that as the one may be depressed,
the other is proportionately elevated. The vertical indented levers act alter-
nately upon the crown wheels, and by the above-described action produce and
give a rotary motion to a small shaft, secured to and mounted on the side of
the framing of the loom. This horizontal shaft carries the tappets which
act upon the healds, as well as a small wheel furnished with projections. As

page_text: ས་
the shaft revolves, the projections are carried with it, and each in its turn acts
upon and depresses a rod, at the upper end of which is a click, working into
a ratchet wheel. To this wheel, it will be evident, motion is imparted. On
the same shaft a small worm is secured, which works in a wheel on the
"winding-on" roller, and by these means we are enabled to give a simultaneous
action to the healds and the "winding-on" roller. By these arrangements
we obtain great regularity in the work to be woven, and economy, as the speed
of manufacture is much increased. Our improvements, secondly, apply to the
production of the pile of such goods as are woven on double grounds; for
this purpose we employ an apparatus or machine of particular construction.
We first roll the goods to be operated upon on a "roller-beam," and place it
horizontally in a framing above the roller beam. A longitudinal bar extends the
entire length of the framing. This bar forms a guide, and causes the fabric
always to present itself in a suitable position to be operated upon, whatever the
diameter of the roll on the beam. Above this guide rod are two guage plates
(capable of being regulated by screws at each end to any count), and between
these the fabric is passed; it is then secured to two drawing or "winding-on"
rollers, one on each side of the guage plates. On the surface of each of these
"winding-on" rollers a small longitudinal mortice is sunk, for the purpose of
receiving a wire woven into each ground. At the commencenient of the
weaving of the piled fabric, above the centre of the opening between the guage
plates, the knife is carried, and may be driven with the aid of a connecting
rod and crank directly from the driving shaft, or otherwise, as may appear
most convenient for the steadying of the knife. We employ at the upper
part of the machine two longitudinal guide rods, as well as a surface plate, (all
extending the entire length of the machine or apparatus,) on which the carriage
of the knife runs. On one side of each guage plate we secure self-regulating
sharpening stones, through which the knife passes at each traverse. The
motion is communicated to the "winding-on" rollers by a worm and wheel
and suitable gear, or any other mechanical equivalent, simultaneously with
the reciprocating motion, which is given to the knife from the crank and
connecting rod.