IMPROVEMENTS IN LOOMS FOR WEAVING AND IN APPARATUS EMPLOYED THEREIN.
Year: 1882

page_text: LETTERS PATENT to James Bywater of the firm of Messieurs Pearson and
Spurr of Birstal in the County of York Engineers and Charles Bedford
Manager and Thomas Kershaw Mechanic both of the same place for an
Invention of "IMPROVEMENTS IN LOOMS FOR WEAVING AND IN APPARATUS
EMPLOYED THEREIN.
"
PROVISIONAL SPECIFICATION left by the said James Bywater, Charles
Bedford, and Thomas Kershaw at the Office of the Commissioners of Patents
on the 16th October 1882.
JAMES BYWATER of the firm of Messrs. Pearson & Spurr of Birstal in the County.
of York Engineers and CHARLES BEDFORD Manager and THOMAS KERSHAW
Mechanic both of the same place IMPROVEMENT IN LOOMS FOR WEAVING AND IN
APPARATUS EMPLOYED THEREIN."
"
This invention relates to improvements in the apparatus for easing the shuttle in
the box during the backward movement of the slay on the ordinary stop rod which
is placed along the back of the slay, we place a casting having a projecting piece
which lays under a finger attached to the said rod. The rod also carries a short
cranked lever having a friction runner on one arm and a balance weight on the
other. The friction runner rests in a recess or hollow formed in the casting above
referred to. As the stay recedes the runner passes over an incline or cam surface
and lifts the casting against the finger on the rod which is thereby turned partially
round and the pressure removed from the back of the shuttle box. On reaching
the end of the incline the lever drops to its original position and on the beat up of
the slay it runs loosely over the incline, being mounted loosely on the rod. The
lever may if required be fixed to the rod and the incline be hinged in which case
the bowl will run over the incline in the backward movement and pass underneath
it at the "beat up" or the incline may be hinged so as to be capable of tilting
laterally the back end being taper or wedge shaped.
The runner then passes over the incline as before and on return motion causes it
to tilt sideways. Whichever form of apparatus be used the result is the same, the

page_text: shuttle box spring. being eased during the backward motion of the slay and the
pressure applied during the "beat up."
Our Invention also relates to an improved construction of metal pickers in which
the head is constructed in two parts. When disconnected the india rubber or
buffalow hide can be placed easily within the recess of the head and the loose
portion placed over it being locked or held in position by means of a tail piece
which passes through a slot in the back of the picker and is provided with a
catch or "sneck" the elasticity of the Rubber serving to keep the said catch in its
place.
Our Invention also relates to the jacquard apparatus and is intended to prevent
"Jack drops" and consists in the employment of abar or roller against which the
jack hook bears so as to prevent its moving laterally and slipping off the lifting
bar which sometimes happens when the lifting bar-is worn. The Roller is arranged
to be ridged when the jack hook has been lifted but it will yield to a spring when
the hook is lowered and allow it to be moved laterally when pushed by the jacquard
needle off the lifting bar.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Bywater, Charles Bedford, and Thomas Kershaw in the Great
Seal Patent Office on the 16th April 1883.
0
JAMES BYWATER of the firm of Messrs Pearson and Spurr of Birstal in the
County of York, Engineers and CHARLES BEDFORD, Manager and THOMAS KERSHAW,
.Mechanic, both of the same place "IMPROVEMENTS IN LOOMS FOR WEAVING AND IN
¡APPARATUS EMPLOYED THEREIN
"
This Invention relates to apparatus to be employed for removing the pressure of
the stop rod finger from the shuttle box swell so as to ease the shuttle in the box
and render it easier to be removed during the operation of picking the shuttle from
the box which operation occurs during the backward movement of the slay board.
For this purpose the stop rod is caused to oscillate upon its axis at the proper
time whereby the pressure of the finger thereon is removed from the swell. On
the stop rod which is placed along the bottom of the slay board, we place a finger,
and secure it thereon by set screws. We also, hinge underneath the slay board a
lever, one end of which acts under the finger on the stop rod, whilst, the other end
is operated upon by the crank arm, in such manner and at such times that imme-
diately before the shuttle is sent from the box, the crank arm comes into contact
with one end of the said lever which it depresses whilst the other end is raised,
the action of which is to lift the finger fixed on the stop rod, operating the said rod
so as to remove the pressure of the stop rod finger off the swell, whereby the power
required to remove the shuttle is very much reduced.
This part of our Invention is shewn in Fig 1 on the accompanying sheet of
Drawings, which is sectional elevation of so much of a loom as is necessary to illus-
trate our Improvements. A is the loom sword hinged at B where it oscillates C is
the stop rod upon which is fixed the finger D where its upper end acts upon the
shuttle swell E all of ordinary construction. Our Improvements are, shewn at F
and G, the former being a finger fixed upon the stop rod, and the latter a lever for
lifting the said finger F when the end H is depressed by the downward stroke of
'the crank arm I. It will be understood that when the slay is moving backward
in the direction of the arrow that the crank arm would move downward (as shewn
in dotted line) and come into contact with the part of the lever G by which it
would be depressed, consequently the finger F would be raised and partially turn
the stop rod upon its axis which would remove the stop rod finger D off the
swell E and allow the shuttle to be sent from the box without much power being
exerted by the picking mechanism.
Our Invention also relates to an improved construction of metal pickers in which
the head is constructed in two parts. When disconnected the india-rubber or
buffalo hide can be placed easily within the recess of the head and the loose portion
placed over it, being locked or held in position by means of a tail piece which passes-
through a slot in the back of the picker and is provided with a catch or
"sneck
the elasticity of the rubber serving to keep the said catch in its place.
"
This part of our Invention is shewn in Figs 2 and 3 where the former is elevation.
and the latter a plan thereof. A is the body of the picker which is of ordinary
construction, our Improvements only having reference to the head or to the part
containing the india-rubber or buffalo hide B which is inserted into the opening
and held by the hand against the part C until the loose part D (shewn in detail
Fig 4) is applied which presses and holds the rubber in its place, the tail E passing
through a slot and snecking against the round part F, the elasticity of the india..
rubber serving to keep the catch in its place. It will be seen by dotted lines that

page_text: the part of the head containg the india-rubber is hollowed out so as to keep the
rubber in its place and prevent it escaping or being driven out by driving the shuttle
across the loom.
Our Invention also relates to the Jacquard apparatus and is intended to prevent
"jack drops" and consists in the employment of a lever, bar or roller against
which the jack hook bears so as to prevent its moving latterally and slipping off
the lifting bar which sometimes happens when the lifting bar is worn. The lever,
bar or roller is arranged to be ridged when the jack hook has been lifted, but it will
yield to a spring when the hook is lowered and allow it to be moved latterally
when pushed by the jacquard needle off the lifting bar.
This part of our Invention is shewn in Fig 5 which is elevation of a jack hook A.
The lifting bar is shewn at B, and our Improved appliance is slewn at C which is
a bell crank lever and may if required have an anti-friction roller upon it. It is
well known by those conversant with jacquard apparatus that in course of time the
lifting bara get worn on their upper edge, and that the hook D also wears away,
consequently when the jack has been lifted, it not unfrequently slips off the lifting
bar, and drops into the loom doing serious damage. To prevent this we apply the
lever C which extends the whole width of the jacquard so that when any of the
jacks are lifted as shewn in dotted line, the lever C will prevent them slipping off
the bar. When however the jacquard needle E is pushed against one of the jacks,
the spring F allows the lever C to yield against the pressure of the needles, and so
be allowed to perform its ordinary duties.
Having now shewn and described our Invention and the manner in which the
same is to be performed and put into practice, we would have it understood that
we do not limit nor confine ourselves to the exact details herein shewn and described
as these may be varied without departing from the peculiar character of our
Invention-what therefore we claim is
Firstly. The combination of the finger F and lever G operated by the crank
arm for the purpose of relieving the shuttle, substantially as herein ahewn and
described.
Secondly. The construction of pickers substantially as herein shewn and described.
having a loose piece D for holding the india-rubber."
Thirdly. The employment of apparatus such as is herein shewn and described for
preventing "jack drops."
In witness whereof I, the said Charles Bedford for and on behalf of myself
and the said James Bywater and Thomas Kershaw, have hereunto set my
band and seal this fourteenth day of April in the year of our Lord,
one thousand, eight hundred and eighty three..