IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1877

page_text: LETTERS PATENT to George Hodgson, of Bradford, in the County of York,
Machine Maker, and James Broadley, of the said Bradford, and in the Employ-
ment of the said George Hodgson, for the Invention of "IMPROVEMENTS IN
LOOMS FOR WEAVING."
Sealed the 26th March 1878, and dated the 2nd October 1877.
PROVISIONAL SPECIFICATION left by the said George Hodgson and James
Broadley at the Office of the Commissioners of Patents on the 2nd October
1877.
GEORGE HODGSON, of Bradford, in the County of York, Machine Maker, and
JAMES BROADLEY, of the said Bradford, and in the Employment of the said George
Hodgson. " IMPROVEMENTS IN LOOMS FOR WEAVING."
The Invention has reference to improved means for regulating the letting off of
warp from the warp beam.
A ratchet wheel on the warp beam is held from rotation in one direction with an
elastic holding, by means of a click or clicks carried by a stud or studs, operated by
adjustable spring pressure. This ratchet wheel is applied so that the warp beam
may turn freely within it, except as controlled by frictional pressure, operated by
springs adjustable by set screws or otherwise; this frictional pressure may be by one
metal surface pressing on another, or the surfaces may have leather, rope, or other
elastic substance intervening between them, depending on the character of the fabric
being produced and consequent delicacy or kind of friction required. By the semeans
each time the going part beats up the work the beam yields easily, as adjusted to
the character of the warp.
In pulling the beam back no screws require to be adjusted or weights taken off.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Hodgson and James Broadley in the Great Seal Patent Office
on the 28th March 1878.
GEORGE HODGSON, of Bradford, in the County of York, Machine Maker, and
JAMES BROADLEY, of the said Bradford, and in the Employment of the said George
Hodgson. "IMPROVEMENTS IN LOOMS FOR WEAVING."
The Invention has reference to improved means for regulating the letting off of
warp from the warp beam.
A ratchet wheel on the warp beam is held from rotation in one direction with an
elastic holding, by means of a click or clicks carried by a stud or studs, operated by
adjustable spring pressure. This ratchet wheel is applied so that the warp beam may
turn freely within it, except as controlled by frictional pressure, operated by springs
adjustable by set screws or otherwise; this frictional pressure may be by one metal
surface pressing on another, or the surfaces may have leather, rope, or other elastic
substance intervening between them, depending on the character of the fabric being
produced and the consequent delicacy or kind of friction required. By these means
each time the going part beats up the work the beam yields easily as adjusted to
the character of the warp.
In pulling the beam back no screws require to be adjusted or weights taken off.
But that the Invention may be the better understood, we will by the aid of the
accompanying Drawings proceed to describe means pursued by us in carrying the
...
same into effect.
Figure 1 shews by front view, Figure 2 by end view, one arrangement of
apparatus according to our Invention. In both of these views the same letters
indicate corresponding parts.
a represents part of one end frame of the loom; b is the warp beam; c is the
ratchet wheel carried by this warp beam, and d is a spring click, the end of which
acts in the teeth of the ratchet wheel c; this click d is acted upon by the spring c¹
with capability of adjustment. According to our Invention in place of this ratchet
wheel c being rigidly affixed to the warp beam b the relative movement of one with
the other is controlled by elastic frictional pressure; fis a collar or ring formed in
two parts, which are connected together by hinge joint at g, and at the opposite side
by the adjustable spring connection h, whilst the collar fis formed with ears or
lugs f¹ to pass into corresponding recesses formed for them in the wheel c, by which,
whilst the parts of the collar fare capable of clipping with an elastic pressure on the
collar or boss i affixed to the roller or beam b, the parts f' of the collar fare capable
of slight movement in the parts of the wheel c. By these means the adhesion of
the wheel c to the warp beam or roller b is controlled by the adjustable frictional
pressure of the collar f.
'
Figures 3 and 4 shew by a section and a side view a modification of the above in
which the collar i is formed in two parts, affixed together, and to the warp beam or
roller b by the ring j, and the ratchet wheel c is held in position on the collar or
boss i between the flange or projection i' formed on one part thereof, and the edge
of the ring j; k, k, are rings of metal or other suitable material, applied to bear
against the opposite sides or surfaces of the ratchet wheel c, and the pressure
exerted by these rings k, k, is effected by springs 1, 1, capable of adjustment.
Figures 5 and 6 shew by a section and a side view another modification of the
Invention, in which the desired extent of frictional holding is obtained by means
of rope m or other suitable elastic substance, which is borne to a collar i fixed on
the warp beam or roller b by the ring, which is in this case formed in two parts
connected together by spring connection h, and also to the wheel c.

page_text: Having thus described our Invention and means which we adopt in carrying the
same into effect, we would have it understood that we do not confine ourselves to the
precise arrangements of parts, as shewn and described, as the same may be varied
without departing from the peculiar character of our Invention; but what we do
claim is, the arranging parts of looms for weaving, whereby the letting off of
warp from the warp beam is regulated by elastic pressure applied to the ratchet
wheel, substantially as described.
In witness whereof, I, the said George Hodgson, have hereunto set my hand
and seal, this 23rd day of March, in the year of our Lord One thousand
eight hundred and seventy-eight.
GEORGE HODGSON. (La)