IMPROVEMENTS IN SHEDDING AND STOP-MOTIONS OF LOOMS
Year: 1884

page_text: PROVISIONAL
DIEVIFICATION.
We, GEORGE HERBERT HODGSON of Laycocks Mill, Thornton Road, Bradford, in
the County of York Loom Maker, and WALTER TETLEY of the same place
Foreman, do hereby declare the nature of our Invention for IMPROVEMENTS IN
SHEDDING AND STOP-MOTIONS OF LOOMS, to be as follows:-
This invention relates to certain improvements in looms for weaving, and has for
its object the regulation of the healds in such a manner, that they are lowered with
greater regularity and locked at the extreme portions of the traverse, and to stop
the loom whenever the shuttle picking strap is broken or the shuttle fails to
be sent out of the box at the proper time which we accomplish in the following
manner:
The draw knives are arranged with teeth, and each draw knife gears with a
toothed sector on an eccentric, which works within an opening formed in a lover to
which the healds are attached. When the draw bars actuate the draw knives, and
raise or lower the healds, the eccentrics lock the healds at full "shed" by the
circumference of each eccentric coming in contact with a curved projection which
prevents the eccentric or healds moving until the draw-bars again actuate the draw
knives, and in order to provent the healds dropping too quickly when they are
being lowered, we form the end of each draw knife with a hook, and joint to one
of the draw bars, arms to which is secured a cross bar which slides in suitable
grooves, and supports or prevents the healds dropping suddenly by the hook ends
of the draw bars hooking on the said cross bars, which sliding in and guided by the
grooves will leave the hooks about the time the warps threads are level, the draw
bar continuing its course, forcing the bealds forward the distance required, when
they are locked by the eccentrics coming in contact with the curved projections
before mentioned.
We stop the loom whenever the picking strap is broken or the shuttle fails to be
sent out of the box in the following manner :-In the ordinary rod connecting
what is usually termed the "frog" to the break clip we cut an indentation or
secure a stood thereto and mount upon a fulcrum above the said rod, a lever, one
ond of which engages with the before mentioned indentation or stud, the other end
being free, and when the shuttle is not acted upon, that is, fails to be sent out of
the box, an additional finger or bar secured to the ordinary stop rod mounted to
the underside of the lathe or going part, comes in contact with the free end of tho
lever causing it to move on its fulcrum, and the connecting rod to move towards
the front of the loom by which the brake is applied and the ordinary weft motion
stop rod dislodged out of the usual notch in which it is placed whilst the loom is
working, thereby stopping the loom.
WAUGH & CHAPMAN,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
We GEORGE HERBERT HODGSON of Laycocks Mill, Thornton Road, Bradford,
in the County of York, Loom Maker, and WALTER TETLEY of the same place,
Foreman, do hereby declare the nature of our invention for IMPROVEMENTS IN
SHEDDING AND STOP MOTIONS OF LOOMS, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to certain improvements in looms for weaving, and has
for its object the regulation of the healds in such a manner, that they are lowered
with greater regularity and locked at the extreme portions of the traverse, and
also to stop the loom whenever the shuttle fails to be sent out of the box at the
proper time.
In order to fully explain our invention, we will describe the same by making
reference to the accompanying drawings, in which Fig 1 represents such portions
of a heald regulating machine as are required to explain our invention, the
drawing being partly in section; and Fig 2 represents the apparatus we
employ for stopping the loom when the shuttle is not operated upon at tho
proper time.
The heald regulating apparatus is mounted and operated upon in the usual
manner, the draw knives A being arranged with teeth, each draw knife gearing
with its respective toothed sector B that forms part of an eccentric B' each of
which is free on shaft S and each works within an opening formed in its respective
lever C. to which the healds are attached; ono eccentric being for each lover, all
the latter being mounted on shaft D.
When the draw bars E and E' actuate the draw knives A, and thereby raise and
lower the healds to form the "shed "; the eccentrics B' lock both the top and
bottoin healds at "full shed" by reason of the eccentrics being turned some in the
direction as shewn by full lines and others as shewn by dotted lines, whereby the
circumference of each eccentric B₁ comes in contact with the curved portion of its
respective lever C, at C or C, by which the eccentrics and healds are prevented
moving until the draw bars E and E again actuate the draw knives A, which are
selected by pegs secured to lags of the ordinary kind; and in order to prevent the
healds that form the top portion of the "shed" dropping too quickly when they are
being lowered, we forin the end of each draw knife with a hook A', and joint to
the bottom draw bar E¹ the arms of a cross bar F, which slides in grooves G, so
that should the weight of the healds and the tension of the warp theroon be so
great as to cause the draw knives to follow the receeding draw bar E, they are
prevented by the before nained hooks A' coming in contact with the cross bar Fas
shewn by the draw knife in dotted lines. When the healds and warp threads are
about level, the cross bar F will begin to descend to the lower portion of the
grooves at G¹, thereby clearing the hooks; the healds continuing their course by
means of the bottom draw bar E' acting upon the projections A³ on the respective
draw knives, which will be locked at the end of the traverso by the eccentrics
coming in contact with the curved portions C as shewn by dotted lines; those
healds that are at the top being locked by the respective eccentrics at C¹.

page_text: We stop the loom whenever the picking strap is broken, or the shuttle fails to be
sent out of the box, by cutting in the ordinary rod J connecting together what is
usually termed the "frog" K with the break clip L, an indentation at J; and
mounting upon a fulcrum above the said rod a lever M, one end of which engages
with the before mentioned indentation, the other end at M¹ being free; or in place
of the indentation a stud may be secured to the side of the rod J with which tho
said lever is made to engage; and when the shuttle is not acted upon, that is, fails
to be sent out of the box, an additional finger N which is secured to the ordinary
stop rod P mounted to the underside of the lathe or going part, comes in contact
with the free end of lever at M¹, and thus actuates it on its fulcrum, thereby
causing the connecting rod J to move in the direction of the arrow towards the
front of the loom, by which the break clip L is applied to the ordinary break
pulley R; and the stud K' on "frog" to come in contact with bar T, by which
the ordinary starting and stopping rod T is dislodged out of the usual notch in
which it is placed whilst the loom is working, thereby stopping the loom.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is
The locking of the healds when at full "shed" by the eccentrics B' in combination
with the lovers C substantially in the manner described and as illustrated by the
accompanying drawings.
The cross bar F applied substantially in the manner and for the purpose
described.
The combination of the finger N. with the lever M. connecting rod J, frog K
and break clip L, all arranged and operated upon substantially in the manner
described.
1007
WAUGH & CHAPMAN,
70, Chancery Lane, W.C.,
Agents for the Applicants.