Year: 1887

page_text: Date of Application, 6th May, 1887
Complete Left, 6th Feb., 1888
Complete Accepted, 1st June, 1888
1 JOHN HENRY BRIERLEY, of 51 Aldermanbury, in the City of London,
Manufacturer and agent, do hereby declare the nature of the said invention to be as
follows:-
This invention relates to further improvements in looms for which Letters Patent,
No. 2230 dated 1st day of June 1880 were granted to me, the object of the present
invention being the formation of the double sheds, without the use of the double
centre, or fulcrum treadle levers therein referred to.
According to my present invention I ensure the division of the warp threads so as
to form two sheds by means of a series of bell crank levers arranged one half over the
other, and mounted in separate moveable frames, the said levers are connected to
each other by adjustable links. For operating the said levers there are two similar,
but larger levers mounted at the end of the loom, and worked by link in connection
with ordinary treadles.
These larger levers are linked together, and connected with the heald levers thus
operating the entire double set of heald levers, and admitting of half the treadles
being dispensed with.
Immediately underneath these levers is a plain lever which answers the following
purpose, viz.-reducing the shed to any required depth in the following manner :-
One end of the said lever is attached to a moveable frame in which there is a slot
sufficiently wide to receive the connecting link from treadle to the lever, so that by
removing the moveable support of the plain lever the shed can be regulated.
The link which runs from treadle to the L lever passing through the slot in the
plain lever, is provided at its upper end with a V or other shaped pulley for the
purpose of facilitating movement in order to regulate the shed.

page_text: For the purpose of dividing the warp into two, or separate sheds for the weaving
of the button hole, at any given distance in the length of the web, I employ worm,
and reducing cog wheels in connection with a notched disc, so that when this notch is
reached by the looms revolutions a point which is attached at a short distance from
the fulcrum to a plain lever, the extreme end of which is connected with a short
lever attached to a small rod running from end to end of loom so that when the
point drops into the notched disc two catches drop into two other catches attached to
the slay swords arm, these catches then by connecting link act upon two bell cranks
when the slay board is beating up, and by pressing down lowers the bottom warp
beam and raises the top one, a similar motion when the button hole is complete, and 1
places the two warp beams in their original position.
In order to have a dividing warp it is of course necessary to have two warp beams.
The moveable frames in which bell cranks are carried is operated by means of
cog wheels, and notched, or rack bar.
The nose of the upper shuttle is turned below its central line whilst the bottom one 1
has its nose above its centre.

page_text: COMPLETE SPECIFICATION.
Improvements in Looms for Weaving Brace Webs.
I, JOHN HENRY BRIERLEY of 51, Aldermanbury, in the City of London,
Manufacturer and Agent 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 :-
This invention relates to further improvements in looms for which Letters Patent
No. 2230 dated 1st day of June 1880 were granted to me, the object of the present
invention being the formation of the double sheds without the use of the double
centre, or fulcrum treadle levers therein referred to.
According to my present invention I ensure the division of the warp threads so as
to form two sheds by means of a series of bell crank levers arranged one half over
the other, and mounted in separate moveable frames, the said levers are connected to
each other by adjustable links. For operating the said levers there are two similar
but larger levers mounted at the end of the loom, and worked by link in connection
with ordinary treadles.
These larger levers are linked together, and connected with the heald levers, thus
operating the entire double set of heald levers, and admitting of half the previous
number of treadles being dispensed with.
For the purpose of dividing the warp into two, or separate sheds for the weaving
of the button hole at any given distance in the length of the web, 1 employ worm
and cog wheels in connection with two notched discs, so that when a notch is reached
by the loom's revolutions a point is attached to a plain lever, the extreme end of
which is connected with a short lever attached to a small rod running from end to end
of loom so that when the point drops into the notched disc, two catches drop into two
other catches attached to the slay swords arm, these catches then by connecting link
act upon two bell cranks when the slay board is beating up, and by pressing down,
lowers the bottom warp beam and raises the top one, a similar motion when the
button hole is complete and places the two warp beams in their original position.
In order to have a dividing warp, it is of course necessary to have two warp beams.
The moveable frames in which bell cranks are carried are operated by means of
cog wheels, and notched or rack bar.
The nose of the upper shuttle is turned below its central line whilst the bottom one
has its nose above its centre.
Such being the nature and object of this, my Invention, the following is a complete
description of same, reference being had to the accompanying drawings.

page_text: t
Fig. 1 is an elevation of a loom, having my improvements applied thereto.
Fig. 2 is an end elevation of Fig. 1.
Fig. 3 is a section of the warp guide beam.
Fig. 4 is a front elevation of Fig. 3.
Fig. 5 is a like elevation, the beam being separated and in position for the weaving
of a button hole.
Fig. 6 is an enlarged section, about full size of slay board shewing shuttles in
position, their shape and also the lines of the warp when the ordinary shed has been
reduced and divided into two sheds for the weaving the button hole.
The weaving the plain portion or body of the fabric is accomplished and the
formation of the plain or ordinary shed is effected through the agency of the
ordinary treadles, tappets, sectar shedding levers, and healds 4. 5.
In the formation of the divided and reduced double shed in the weaving of
button holes according to my present invention I ensure the division of the warp
threads 1-2-3-4 so as to form two sheds 5, 6-by means of a series of bell crank
levers 7.8 arranged one half over the other and mounted in separate moveable
frames 9. 10 the said levers 7. 8. are connected to each other by adjustable
links 11-12.
For operating the said levers there are two similar but larger levers 13-14 working
on fulcrum studs 15-16-mounted at the end of the loom, and worked by links 17 in
connection with ordinary treadles 18 and tappet 19.
These larger levers 13. 14 are linked together at 20, and connected at 21, 21, with
the heald levers 7. 8, thus operating the entire double set of heald levers, and
admitting of half the previous number of treadles being dispensed with.
For purpose of dividing the warp into two or separate sheds for the weaving of
the button hole at pre-determined distance apart, I employ a worm 23 and worm
wheel 24. The worm is driven by pulley 25, worm 26, wheel 27 and shaft 28,
the wheel 24 drives the shaft on which are the two notched discs 29-30.
When a notch in disc-29 comes under the point 31, the lever 32 drops, and its end
by the wire or cord 33 drops a bolt 34, so that the latter projects through the
slide bar 35, and when the slay 35 moves forward it bears upon the bolt 34, and
carries forward with it the slide 35. which is connected with the bell crank lever 36,
and operates the latter on its stud 37, and thus divides the warp into two parts
(see Figs. 5, 6) there being also connected with the slide 35 the jointed lever 36"
bell crank 36 connected with 22, the pin 22 connects 22 with 17, the upper end of
latter is hooked and clips 14, so that when. 36 acts, the clip 17 is moved nearer the
fulcrum 16 of bell crank 14 consequently the action of 17 upon 14 is circumscribed,
and so likewise the action of 20 and 21 upon the heald levers 7-8 is made less, and
the shed is reduced the foregoing parts being really employed for purpose of aiding
the parts 57 and 54 in limiting the shed.
A corresponding lever to 32 is the lever 32" and which is connected by a cord 33*
to the bolt 34 (see fig. 1) and its slide 35° is operated alternately with the slide 35
by the swing or, movement of the slay sword 35b so that when the bolt 34ª has been
dropped by reason of the "point" of lever 32ª falling into a notch of the disc 30
the two warp supports 39-40 are closed as shewn at fig. 4. The lever 32" its "point"
and disc 30 are in all respects similar to the disc 29, "point" 31 and lever 32 as
shewn at fig. 2.
.
Fig. 6 illustrates by dotted lines 1, 4, the main shed when the body of the fabric is
being woven, the two shuttles 41, 42 passing through this shed at one time in contrary
directions. The shed is divided forming two separate sheds through the slides 35. 35
operating the bell crank lever 36, the lower arm of which presses down the part 43,
to lower end of which is connected the vertical rack 44 gearing with and turning the
wheel 45, the latter. communicating upward motion to the rack 46 upper end of
which is attached to the warp bearer 40, like racks and wheels being applied to the

page_text: centre, and other end of loom, and connected by rod and links 45, the latter and
warp bearers 39 are thus forced apart as seen at fig. 5, the connecting rod 47 lifts
lever 48, turning the strap pulleys. 49, and by the connections 50, 51, lowering the
heald support beam 10 and raising the beam 9.
To the end of 10 is attached a slotted adjustable plate 52, having a projecting
pin 53, which is received in the slot of arm 54 jointed to the link 55, and when
53 operates 55, the latter moves 21 in the slot of 14, and so a portion of the movement
of 14 is non-effective on 21, a like slot in 13 gives a similar "dwell" to 21, 11, and 7
consequently less movement of levers 7, 8, and reduced sheds.
It will be seen that the formation of the double sheds is effected in a positive
manner, though the action of the apparatus as described not being dependant on
weight or springs.
Having now particularly described and ascertained the nature of my said Invention'
and in what manner the same is to be performed, I declare that what I claim is ;
First The general construction, combination and arrangement of apparatus for
reducing and for dividing the double sheds for purpose and as herein described.
Second-The moveable supports 9. 10, and the dividable warp supports 39. 40 in
combination for purpose as herein described and illustrated by annexed drawings.
Dated this 4th day of February 1888