Improvements in Dobbies for Operating the Healds of Looms for Weaving.
Year: 1888

page_text: Date of Application, 16th Oct., 1888
Complete Specification Left, 16th July, 1889-Accepted, 17th Aug., 1889
PROVISIONAL SPECIFICATION.
Improvements in Dobbies for Operating the Healds of Looms for
Weaving.
I, ARTHUR SOWDEN of Spring Field House, Baildon, in the County of York,
Loom Maker, do hereby declare the nature of this invention to be as follows:-
According to this my said .invention. I operate the card reylinder from the crank
shaft by means of a vertical shaft driven by bevel wheels, one of latter on upper
end of vertical shaft, gears with and drives a like wheel on a short horizontal shaft
on which is a nogging wheel a like wheel being on the card cylinder shaft, a
clutch box is arranged on the vertical shaft for purpose of reversing the rotation
of the card cylinder.
On the vertical shaft is a tappet or heart which at each revolution imparts
a horizontal movement to a bar carried in slide brackets, to the.slide bar is.attached,
the lower end of a bell crank lever, there being a single arm lever, on the opposite
side of the framework of the dobby, the end of the bell crank, and of the single
lever are connected by a cross rod, which is situate under the ends.of.the tumbler
levers so that the latter are all lifted and lowered onto the card cylinder at each
revolution of the heart. The other end of the tumbler lever is provided with a
guide piece and a semicircular recess within which the lower end of .the .needle .is
received and supported, and thereby dispenses with the necessity for the lower grate
usually required, the upper end of the needles of the catches are supported by a
grating or notched .bar and the catches .rest upon the heads of the .needles.as
ordinary.
The needles or pegs of the pattern .cylinder which act on the under side of the
tumbler levers.are carried in guide.rails, between which on the said needles.or pegs
are spiral springs, which ease and break the concussion on the pegs, and return
them from the card barrel, when the tumbler lever is again raised. By the use of
the improved appliances above described the cylinder has rotating motion only,.and is
not raised and lowered as is commonly practised, and so obviates.liability of the cards
being punctured or punched by the ends of the needles.
I place the shaft for .carrying the T lever which operates.the draw.knives.in.the
centre:of the dobby in lieu of at the end as heretofore and I connect the ends of
the Tlever with the knives by means of an adjustable arm which is readily
removeable when necessary, the slides in which the knives work I face with.adjustable
pieces which prevent any tendency to tilting of the knives and such plates
.can be
lowered.at any time so as to compensate for wear of the slots that the latter.may be
kept only of sufficient width for the free to.and fro passage of the knives.
When working with lags or pegs instead of cards, for convenience.of.removal of the
card cylinder from its bearings, I employ two clip brackets the axis or ends of the
shaft on opposite ends of the barrel are received in the clips.or forked supports and
semicircular ended piece being inserted outside the axle but within the.outer ends.of
the clips or forks completes the bearings, and pins passed through the pieces hold the
latter securely. I drive the barrel by means of a worm.and worm wheel the .latter
being held by means of a safety catch which enters a recess on the side of the worm
so that in case of any entanglement or.fouling of.the cards the wheel will stop and
prevent injury to the pegs.
1000

page_text: COMPLETE SPECIFICATION.
Improvements in Dobbies for Operating the Healds of Looms for
Weaving.
I, ARTHUR SOWDEN, of Spring Field House, Baildon, in the County of York,
Loom Maker, 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 :-
According to this my said invention I operate the card cylinder from the crank
shaft by means of a vertical shaft driven by bevel wheels, one of latter on the
vertical shaft, gears with and drives a nogging wheel a like wheel being on the card
cylinder shaft, a clutch box is arranged on the vertical shaft for purpose of reversing
the rotation of the card cylinder.
On the vertical shaft is a tappet or heart which at each revolution imparts a
horizontal movement to a bar carried in slide brackets, to the slide bar is attached
one end of a bell crank lever, their being a single arm lever, on the opposite side of
the framework of the dobby, the end of the bell crank, and of the single lever are
'connected by a cross rod which is situate under the ends of the tumbler lever so that
the latter are all lifted and lowered onto the card cylinder at each revolution of
the heart.
The other end of the tumbler lever is provided with a guide piece and a semi-
circular recess within which the lower end of the needle is received and supported,
and thereby dispenses with the necessity for the lower grate usually required, the.
upper end of the needles of the catches are supported by a grating or notched bar
and the catches rest upon the heads of the needles as ordinary.
The needles or pegs of the pattern cylinder are carried in guide rails, between
which on the said pegs are spiral springs, which ease and break the concussion on
the pegs, and return them from the card barrel, when the tumbler lever is again
raised. By the use of the improved appliances above described the cylinder has
rotating motion only, and is not raised and lowered as is commonly practised, and
so obviates liability to the cards being punctured or punched by the ends of the
needles.
I place the shaft for carrying the T lever which operates the draw knives in the
centre of the dobby in lieu of at the end as heretofore and I connect the ends of
the T lever with the knives by means of an adjustable arm which is readily
removable when necessary, the slides in which the knives work I face with
adjustable pieces which prevent any tendency to tilting of the knives and such plates
can be lowered at any time so as to compensate for wear of the slots that the
latter may be kept only of sufficient width for the free to and fro passage of the
knives.
When the working with lags or pegs instead of cards, for convenience of removal of
the card cylinder from its hearings, I employ two clip brackets the axis or ends of
the shaft on opposite ends of the barrel are received in the clips or forked supports
and a semicircular ended piece being inserted outside the axle but within the outer
ends of the clips or forks completes the bearings, and pins passed through the pieces
hold the latter securely. I drive the barrel by means of a worm and worm wheel the
latter being held by means of a safety catch which enters a recess on the side of the
worm so that in case of any entanglement or fouling of the cards the wheel will stop
and prevent injury to the pegs.
Such being the nature, and object of my said invention the following is a complete
description of same reference being had to the accompanying drawings forming a part
of this specification in which :-
:-
Fig. 1 is a side elevation of dobby with my improvements applied thereto.
Fig. 2 is detail of the adjustable detachable arm.
Fig. 3 is a side elevation of tumbler lever with my improvements applied

page_text: Fig. is a plan view or part of Fig. 3.
Fig. 5 is a sectional elevation of the grate for carrying and supporting the knives
and needles.
Fig. 6 is a plan view of Fig. 5.
Fig. 7 is a view of the "slide" faced with adjustable piece.
Fig. 8 is a detail shewing the appliance for raising the tumbler levers, and
controlling the card cylinder.
Fig. 9 is a side elevation of clip bracket for supporting the card cylinder.
Fig. 10 shews a means of driving the card cylinder.
According to this my said invention I operate the card cylinder 1 from the crank
shaft 2 (see Fig. 8) on which is a bevel wheel 3 gearing with two bevel wheels 5. 6
loose on the vertical shaft 7 the said wheels 5. 6 being held fast on the shaft 7,
when necessary, by means of the clutch 8 operated by the hand lever 9. When the
clutch 8 is in gear with the top bevel wheel 5 the shaft 7 is turned, and if the
clutch 8 is in gear with the lower bevel wheel 6 the shaft 7 is turned in the opposite
direction, the clutch S working on a key bed in the shaft 7, and on the latter is a
nogging wheel 10 gearing with a like wheel 11 on the shaft of the card cylinder 1
so that the latter can be reversed and controlled by means of the hand lever 9.
On the vertical shaft 7 is also a tappet or heart 4 which at each revolution imparts
a horizontal movement to a bar 12 carried in slide brackets 13 to the slide bar 12 is
attached one end of a bell crank lever 14 there being a single arm lever on the
opposite end of the frame of the dobby the end of the bell crank lever 14 and of the
single lever are connected by a cross bar 15 which is situate under the ends of
the tumbler levers 16 so that the latter are all lifted from, and lowered on to the card
cylinder 1, or on to the pins 17 connected therewith (see Fig. 3) at each revolution
of the heart 4.
In some cases as illustrated by Figs. 1-3 I prefer to raise or lower the tumbler
levers 16 by means of a tappet or heart 4 on the crank shaft 2 a vertical arm and
foot 12 resting on the tappet 4 the other end of the vertical arm being connected
by a short link 14 to the cross bar or rod 15 under the tumbler levers 16.
The other end of the tumbler levers 16 are provided with guide pieces 18 and
semicircular recesses 19 within which the lower ends of the needles 20 are received
(see Figs. 3 and 4) and supported, and thereby dispensing with the necessity of a
bottom grate as heretofore, the upper ends of the needles 20 and the catches are
supported by a grating or notched bar 21 (see Figs. 5 and 6) and the catches or
catches rest on the top of the needles 20 as ordinary.
The needles, or pegs 17 of the pattern or card cylinder 1 are carried in guide
rails 22 between which and on the said pegs or needles 17 are spiral springs 23
which ease, and break the concussion on the pegs 17, and return them when the
tumbler levers 16 are raised. It will be seen that by the use of the above described
appliances the card cyclinder 1 has rotating motion only, and is not raised and lowered
as commonly was the case heretofore and so obviates the liability of the cards being
punctured or punched by the end of the needles.
I place the shaft for carrying the lever which operates the draw knives, in the
centre of the dobby in lieu of at the end as heretofore and I connect the ends of
the lever with the draw knives 24 by means of an adjustable arm 25 (see Fig. 2)
which is readily detached when necessary; the slides 24 in which the knives 24ª
work I face with adjustable pieces 26 (see Fig. 7) these adjustable pieces prevent the
knives 24 from tilting or twisting in the slide 24 and effect a great saving in the
wear of the parts, as the pieces 26 can be readily lowered at any time to compensate
for wear of the latter or of the knives 24 so that the slots are only kept of sufficient
size for the free passage, to and fro, of the knives.
When working with lags or pegs, instead of cards, for the convenience of removal
of the cylinder 1 from its bearings I construct the latter of two clip bearings 27
and 28 (see Fig. 9.) the axis or end of the shaft of the cylinder 1 being received in
the clips or forked supports 27 and a semicircular piece 28 being inserted in the
clip 27 and outside the axis or shaft and held by a through pin 29 secures the

page_text: cylinder 1 in position. I drive the barrel 1 by means of a worm wheel 30 on its
axis, the wheel:30 receiving its motion from the worm 31 driven from any convenient
going part, the worm wheel 30 is held by means of a safety catch 324 and spring 33,
but in case of any entanglement or fouling of the pattern mechanism 'the projection 32
on the wheel 30 force back the catch 32 to the position shewn in the drawing
whereon the wheel 30 is loose on the shaft and the barrel will stop and injury to the
pegs is prevented.
Having now particularly described .and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declaro that
what I claim is :-
1. The operating and reversing, gear controlled by the clutch 8 in combination with
and for operating and reversing the card cylinder 1 as herein fully described, and
substantially as illustrated in Fig. 8 of the annexed drawings.
2. The general construction combination, and arrangement of parts for raising, or
lowering the tumbler levers 16 as herein described and substantially as illustrated in
Figs. 1, 3 and 8 of the accompanying drawings.
3. The construction of tumbler lever having the guide piece 18 and recess for the
foot of needle 20 whereby the latter is supported and held in position without the
use of a grate as heretofore.
4. In combination with the slide or slot 24 in which the draw knives 24" work
an adjustable facing plate such as 26, as, and for the purpose herein described, and
substantially as illustrated by Fig. 7 of the annexed drawings.
5. The combination of parts 30. 32. 32ª and 33 for driving, and for releasing 'the
pattern barrel 1 as described and illustrated by Fig. 10 of the annexed
drawings.
1
AT จ
ARTHUR SOWDEN.
By.his Agent, Walter Brierley,
Central Chambers, Halifax.