IMPROVE- MENTS IN LOOMS FOR WEAVING AND IN APPARATUS CONNECTED THEREWITH
Year: 1877

page_text: PROVISIONAL SPECIFICATION left by William Hanson at the Office of the
Commissioners of Patents on the 28th February 1877.
WILLIAM HANSON, Engineer, of Bradford, in the County of York.
"IMPROVE-
MENTS IN LOOMS FOR WEAVING AND IN APPARATUS CONNECTED THEREWITH."
This Invention relates to further improvements in the apparatus for delivering the
warps at any required pressure or tension, thereby dispensing with the setting up
and facilitating the pulling back, preventing the warps stretching or twisting,
producing an even fabric, for which Letters Patent were granted to William
Crabtree and myself, dated the first day of September, One thousand eight hundred
and seventy five, No. 3066.
In carrying out the Invention as described in the Specification of the said Letters
Patent, I have found great difficulty in pulling back when the warps become
deranged, and in same cases an impossibility.
The object of my present improvements is to obviate or remedy this defect, for
which purpose I fit on the warp beam end, on which there is no self-acting apparatus
for delivering the warps, a top and bottom shoe or break lined with leather; the
shoes or breaks are secured together by bolts and nuts; the top shoe is made with
projecting lugs having slot holes, and the bottom shoe is fixed to a shoe plate having
also slot holes; through these slot holes the bolts are passed; one of the bolts is
formed with a head and square end which fits in the bottom slot hole of the shoe
plate, and over the top slot hole is fitted a washer passed over the bolt, on which is
screwed a nut; on the other end of the projecting lugs and shoe plate is fitted
through the slot holes a bolt, but made without a head and longer than the other
bolt; over this bolt and fitted on the top shoe lug is a box, inside which is fitted an
india-rubber or steel spring; over the spring is placed a washer which fits loosely in
the box; the nut screwing up the bolt fits over the washer.
The required tension or pressure on the warp beam end is regulated by the nuts
on the bolts; the bottom part of the long bolt passes through the slot hole of the
shoe plate, and is fixed in a boss formed on an excentric ring, which works over an
excentric fitted on a stud formed on a small shaft fitted in brackets cast under the
shoe plate; the excentric is made with a lever having a stop pin. On one side of the
shoe plate is cast a bracket having a slot hole, through which is passed a bolt to fix
the bottom shoe plate to the loom frame.

page_text: The required pressure on this warp beam end is given by first pulling down the
lever turning the excentric, bringing down the bolt and forcing the spring in
pressing the shoes or breaks; and this pressure is regulated by screwing or unscrew-
ing the nuts on the bolts. When the pressure placed on the warp beam is required
to be removed for pulling back the warps, the lever on the excentric is lifted,
turning the excentric and releasing the spring lifting up the bolts and removing
the pressure off the shoes or breaks on the warp beam; when the pulling back is
finished, the lever is lowered, the excentric turned down, pulling down the bolts
which acts on the spring, giving the same pressure or tension on the warp beam as
before.