Improvements in and relating to Looms for Weaving.
Year: 1894

page_text: Date of Application, 24th Feb., 1894
Complete Specification Left, 6th Sept., 1894-Accepted, 3rd Nov., 1894.
PROVISIONAL SPECIFICATION.
Improvements in and relating to Looms for Weaving.
We, LAW BULCOCK and WILL JOHN THRELFALL, of Springfield Shed,
Burnley, in the County of Lancaster, Cotton Manufacturers, do hereby declare the
nature of this invention to be as follows:-
:―
The first part of our invention relates to shuttle guards and consists essentially.
of a rod cranked at each end, and so disposed and acted upon by an arrangement
of connecting rods and levers as to project in front of the sley and act as a
shuttle guard by the motion of the catch rod finger, setting on handle, brake lever,
or strap fork lever, when the loom is set in motion, but instantly the loom is
stopped, it falls out of the way of the weaver, and does not obstruct him in his
work.
The said rod extends from end to end of the sley in front, and its cranked
extremities may work in side brackets fixed to the sley cap or sword, and are so
acted upon as to give an up and down motion to the shuttle guard or rod.
Projecting through a slot in the setting-on lever or the like is an horizontal
lever centred on a stud in such a manner that when motion is given to the lever to
set on the loom, the said horizontal lever will depress a vertical rod connected by
a swing lever and link to the cranked end of the rod or shuttle guard. It will be
obvious, therefore, that by these simple means, the shuttle guard will be raised in
position to prevent the possibility of the shuttle "flying out," or leaving the shed
when the loom is set in motion, but when the loom is stopped, the shuttle guard or
rod falls by a reverse action out of the way of and does not obstruct the weaver.
The next part of our invention dispenses with the use of buffer straps and in
substitution thereof we employ an improved spring appliance. This consists of a
small bracket or plate formed with a slot, which enables it to be bolted to the slev
cap. The bracket is provided with two lugs, through holes in which a small
spindle is inserted. The space on the spindle between, the lugs is occupied by a
spiral spring and a boss, the latter being secured by a pin to the spindle. Que
end of the spindle carries a two pronged projecting piece, which projects over the loom
spindle, and serves as a spring check or buffer to deaden the concussive force of
the picker. Small pieces of leather may be slipped on the loom spindle against
the two pronged projecting piece to increase its efficacy.
The next part of our invention relates to the brake mechanism of looms. A
semi-circular arm is mounted at one end on a stud carried by a bracket fixed to
the loom frame.
The said curved arm is coated on its inner surface with leather or the like that it
may when in action grip the periphery of the fly wheel. The ordinary brake
lever bears against but is not connected to this arm, and when the loom is stopped
it forces the said arm against the fly wheel and instantly stops the loom.
The next portion of our invention relates to heald operating mechanism, and is
designed to get rid of the variation in the formation of the shed, so apparent
where many staves are employed. We mount the treadle levers vertically instead
of horizontally as heretofore. In a grate at the bottom of the loom or other
support, are a number of shafts, arranged one behind the other. On one of these
shafts is mounted a bobbin or bowl, round which each respective band or cord
proceeding from the staves is carried, and is attached to a slotted adjusting plate
bolted to the lower extremity of the vertical treadle lever, by which the shed is

page_text: evenly adjusted. In some instances, various sized bobbins may be mounted on one
shaft instead of using several shafts as described.
The last part of our invention has reference to certain improvements in and
relating to the shedding motions of looms, for which Letters Patent were granted
to us No. 12,676 dated 28th June 1893. Instead of the leather bands or the like
(proceeding from the healds) being crossed round the loose boss carried by a stud
on a bracket fixed to the loom frame as described in the Specification of above
Patent, we employ or mount two or more loose bosses or bowls on the said bracket,
and the leather bands proceeding from the healds may each be carried round its
own respective boss and not crossed as described in the said Specification.
Dated this 23rd day of February 1894.
F. RICHMOND,
79, St. James Street, Burnley, Agent for Applicants.
COMPLETE SPECIFICATION.
Improvements in and relating to Looms for Weaving.
We LAW BULCOCK and WILL JOHN THRELFALL, of Springfield Shed,
Burnley in the County of Lancaster, Cotton Manufacturers, do hereby declare
the nature of this invention and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement :-
The first part of our invention relates to shuttle guards, and consists essentially
of a rod cranked at each end, and so disposed and acted upon by an arrangement
of connecting rods and levers as to project in front of the sley and act as a
shuttle guard by the motion of the catch rod finger, setting-on handle, brake
lever, or strap fork lever, when the loom is set in motion, but instantly the loom
is stopped, it falls out of the way of the weaver, and does not obstruct him in his.
work.
.
The said rod extends from end to end of the sley in front, and its cranked
extremities may work in side brackets fixed to the sley cap or sword, and are so
acted upon as to give an up and down motion to the shuttle guard or rod.
Projecting through a slot in the setting-on lever or the like is an horizontal
lever centred on a stud in such a manner that when motion is given to the lever to
set on the loom, the said horizontal lever will depress a vertical rod connected by
a swing lever, and link to the cranked end of the rod or shuttle guard. It will
be obvious, therefore, that by these simple means, the shuttle guard will be raised
in position to prevent the possibility of the shuttle "flying out," or leaving the
shed when the loom is set in motion, but when the loom is stopped, the shuttle
guard or rod falls by a reverse action out of the way of and does not obstruct the.
weaver.
The next part of our invention dispenses with the use of buffers straps and in
substitution thereof we employ an improved spring appliance.
This consists of a small bracket or plate formed with a slot, which enables it to
be bolted to the sley cap. The bracket is provided with two lugs, through holes
in which a small spindle is inserted.
The space on the spindle between the two lugs is occupied by a spiral spring and
a boss, the latter being secured by a pin to the spindle. One end of the spindle
carries a two pronged projecting piece or the like, which projects over and under
the loom spindle, and serves as a spring check or buffer to deaden the concussive
force of the picker. Small pieces of leather may be slipped on the loom spindle
against the two pronged projecting piece to increase its efficacy.
The next part of our invention relates to the brake mechanism of looms. A
semicircular arm is mounted at one end on a stud carried by a bracket fixed in
front of the loom.
The said curved arm is coated on its inner surface with leather or the like that

page_text: it may when in action grip the periphery of the fly wheel. The ordinary brake
lever bears against but is not connected to this arm, and when the loom is stopped
it forces the said arm against the fly wheel and instantly stops the loom.
The next part of our invention relates to heald operating mechanism, and is
designed to get rid of the variation in the formation of the shed, so apparent where
many staves are employed. We mount the treadle levers vertically instead of
horizontally as heretofore. In a grate at the bottom of the loom or other support,
are a number of shafts, arranged one behind the other. On each of these shafts.
is mounted a bobbin or bowl, round which each respective band or cord
proceeding from the staves is carried, and is attached to a slotted adjusting
plate bolted to the lower extremity of the vertical treadle lever, by which the
shed is evenly adjusted. In some instances, various sized bobbins may be mounted
on one shaft instead of using several shafts as described.
The last part of our invention has reference to certain improvements in and
relating to the shedding motions of looms, for which Letters Patent were granted
to us No. 12,676 dated 28th June 1893. Instead of the leather bands or the
like (proceeding from the healds) being crossed round the loose boss carried by a
stud on
a bracket fixed to the loom frame as described in the Specification of
above Patent, we employ or mount two or more loose bosses or bowls on the said
bracket, and the leather bands proceeding from the healds may each be carried
round its own respective boss and not crossed as described in the said Specification.
In the accompanying drawings, Figs. 1 and 2 are respectively front and side
elevations of our improved apparatus or guard for preventing shuttles "flying
out" of looms.
Referring to Fig. 1, A is a guard or rod which extends across the sley B in
front of the reed B₁, and is cranked at its extremities, its cranked ends working in
side brackets B2 secured to the sley cap, but however projecting a little beyond
the said bracket, and formed into a hook C to permit of attachment of vertical
rod C having hooked ends or other similar method of attachment, so that on an.
upward or downward movement being imparted to the said vertical rod, it will:
raise or lower the shuttle guard A in or out of position in front of the sley.
.
Mounted on a stud D carried by a bracket fixed to the loom frame is an.
Llever D' having slots at each end of its horizontal and vertical arm respectively.
The setting-on handle D' carries a stud, which, on the setting-on handle being:
pushed 'forward to set on the loom, works in the slot of and moves the vertical
arm of the lever D', thereby raising the horizontal arm of the said lever. As
seen in Fig. 2, the horizontal arm of the Llever; with this motion, raises one
end of intermediate lever D' depressing the vertical rod C', and thus raising the
shuttle guard A in front of the reed in position to prevent the shuttle flying out.
When the loom is stopped a reverse motion of the setting-on handle brings the
guard or rod down close to the face of the reed so as to be out of the way of the
wen ver.
The movement of the setting-on handle into its detent, is of itself sufficient to
hold the guard or rod in position, but for greater security and to steady the parts,
a small spiral spring may be applied in such a manner as by its tension to hold the
guard or rod firmly when projecting in front of the reed.
Fig. 3 represents the next part of our invention which relates to the brake
mechanism of looms. We mount on a stud E carried by a bracket in front of the
fly wheel E a semicircular arm or grip lever E which is coated on its inner
surface with leather or the like to engender friction. The ordinary brake
lever F carries a ball F', which bears against the said semi-circular grip lever E.
The brake lever F at its other end is connected to vertical rod F which is raised
and lowered by the usual tumbler put in motion by the knocking from its detent of
the handle, which stops the loom.
Great brake power is obtained by this arrangement, which has also the
advantage of being regulated to a nicety, the loom being readily stopped and with
certainty with the shuttle boxed on the setting-on side.

page_text: $
"
I
We dispense with the usual back brake, and to serve its purpose, we preferably,
construct the semicircular arm of flexible material such as tempered steel. On the
fall of the stop-rod tongue G on the absence of the shuttle from the box, the
frog G is brought forward or banged up bringing with it the horizontal
slide-bar G' having at its extremity pin G, which pinches the steel semicircular
arm. E against the periphery of fly-wheel E' instantly bringing the loom to a
stand. The sliding horizontal bar G' slides in and is steadied by bracket H fixed
to the loom side. Between this bracket and a temporary fixed piece H* on the
sliding bar G' is introduced some rubber packing or the like H to prevent
concussion of the parts when the frog is banged up.
In Fig. 4 is shewn the next part of our invention, which dispenses with the use
of buffer straps. In this part of our invention, we employ a bracket I bolted to,
the sley cap, and provided with two lugs J, through holes in which a small
spindle J' is inserted. The space between the lugs is occupied by a spiral spring J',
and the spindle is provided with a boss at one end to retain it in its place, whilst at
its other end nearest the shuttle-box it carries a two-pronged projecting piece K or
the like which projects over the loom spindle and serves as a spring check or
buffer to deaden the concussive force of the picker. Small pieces of leather may
be slipped on the loom spindle against the two pronged projecting piece K or the
like to render it more elastic and increase its efficacy.
Fig. 5 is a sectional side elevation of a loom in which is represented the next
part of our invention, which relates to the heald. operating mechanism of looms,
and is designed to get rid of the variation in the formation of the shed, so apparent
where many staves are employed..
In this arrangement the treadle levers L are mounted vertically instead of
horizontally as heretofore, and are operated by tappets M on the tappet shaft as
in the usual manner. The bands or cords N proceeding from the respective
healds are secured: or attached. to quadrant levers O, each of the said levers being
mounted on its own respective shaft P. Each of these quadrant levers
diminishes successively in size with its neighbour, and at its lower extremity, it is
connected by a wire rod or cord Q, to a hooked adjusting piece R secured in any
position at. the foot of treadle lever L by wedge piece. S or in substitution thereof
a slotted adjusting plate may be bolted to the lower extremity of the vertical
treadle levers L, by which the shed is evenly adjusted.
C
Instead of passing the cords N proceeding from the healds over the quadrant
levers O they may be passed. over small bowls mounted on the respective shafts P
and carried direct to the adjusting piece R or slotted plate as described, and if
desired any particular sized bowl or bobbin may be used to get a perpendicular.
and equal lift..
In this view is also represented the next part of our invention, which is a
modification of an arrangement, for which Letters Patent were granted to us,
No.. 12,676 dated 28th June 1893. In this part of our invention, instead of the
leather bands U being crossed round. a loose boss carried by a stud on a bracket
-fixed to the loom frame as described in the Specification of the above Patent, we
employ or mount two or more loose. bosses or bowls T, and the leather bands U
proceeding from the healds or harness of the selvedge motion are each carried
round its own. respective boss. as. shewn in Fig. 5.and not crossed as described in
the said Specification.
Having now particularly described and ascertained' the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The improved construction and arrangement of, automatic. shuttle guard,
substantially as described and illustrated. in Figs. 1 and 2.
;
2.. The guard or rod A cranked at its extremities and operated automatically
by vertical rod Clever D, and intermediate lever D'; and, through the medium
of the setting-on handle, catch-rod finger, brake lever or strap fork lever; raising

page_text: the said rod in position to act as a shuttle guard or lowering the same by the same
means when the loom is set in motion or stopped, substantially as shewn and
described.
3. The improved spring buffer or shuttle checking appliance, arranged substan-
tially as shewn in Fig. 4 and described for the purpose specified.
4. In brake mechanism of looms, providing a semicircular arm or grip lever E³,
mounted on a stud in front of the loom and acted upon independently by brake
lever F in the manner described, substantially as herein set forth and illustrated.
5. In combination with the above arrangement of brake, horizontal slide bar G²
operated by frog G', thereby pinching grip lever E, against the periphery of the
fly wheel, substantially as described aud illustrated for the purpose set forth.
6. The improved arrangement of heald operating mechanism for looms,
represented in Fig. 5, for getting rid of the variation in the formation of the shed,
substantially as shewn and described.
7. In heald operating mechanism of looms, arranging the treadle levers L
vertically instead of horizontally, and operating by means of such treadle levers,
quadrant levers O mounted on separate shafts, each of which gives an equal lift to.
each individual stave, substantially as shewn and described.
8. The modification also described in the Specification consisting of bowls
mounted on separate shafts around which the bands proceeding from the healds
are carried, and adjustably secured to vertical treadle levers, substantially as set
forth.
9. The improved arrangement of selvedge motion, having two bowls, round
which the respective bands proceeding from the healds are carried and attached to
the rocking levers or arms, so as to obtain a perpendicular lift, substantially as
shewn and described.
-
a
1004
F. RICHMOND,
12, Standish Street, Burnley, Agent for the Applicants..