Improvements in Shedding Mechanisms of Looms.
Year: 1893

page_text: Date of Application, 23rd June, 1893
Complete Specification Left, 20th Mar., 1894-Accepted, 28th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in Shedding Mechanisms of Looms.
We JAMES HILL of 35 Ethel Street Keighley in the County of York Machine
Maker and EDWARD HILL of the same place Machine Maker do hereby declare
the nature of this invention to be as follows:-
-
It relates to improvements in shedding mechanisms, both positive and non
positive, and consists of constructing and arranging the parts forming said shedding
mechanisms in such a manner that the efficiency thereof is greatly enhanced.
In carrying out our said invention we make use of a bell crank or heald lever,
which, instead of fulcruming on a shaft we allow to rest and work in the bottom of
a trough which extends horizontally from one frame of the machine to the other
and is suitably fastened thereto so as to form a stay or rail for said frames.
Over the fulcrum of the said bell crank or heald lever, and just clear of a radius
part formed thereon, we place a rod or guard pin in such a position as to prevent
it, the said bell crank or heald lever, from getting out of the said trough when
at work.
Upon said bell crank or heald lever is cast a pin upon which we mount a swing
lever or baulk said swing lever or baulk having a hole in its centre part for this
purpose. Upon one side of the swing lever or baulk, and near the top and
bottom respectively, are cast two pins, and upon these pins we mount two catches,
said catches having holes in their centre parts to receive said pins. To keep the
catches on the pins, holes are made through the centres of said pins and metal
rivets, the heads of which are large enough to keep said catches on said pins, are
inserted into said holes.
The catches are formed, for a positive machine, with two hooks above the centre,
when mounted on baulk or swing lever, one hook projecting towards the front and
the other the back of the machine, while underneath the centres are formed tail
pieces which project towards the back of the machine.
We use another trough which also extends horizontally from one frame of the
machine to the other and which is securely fastened thereto, to receive the
projections or pivots of feelers or indicating levers, said projections or pivots
being cast on the underside and at a suitable distance from the ends of said feelers
or indicating levers. The feelers or indicating levers are made heavier at one
end than at the other so that when fulcrumed or pivoted in their trough the heavier
ends go down causing the lighter ends to tilt up. The heavier ends project over
and come into contact with the lags and pegs or pattern mechanism, said lags and
pegs or pattern mechanism being suitably arranged at the back of the machine,
while the lighter ends come into contact with the tails of the catches which are
mounted on the swing lever or baulk. In suitable positions on the frames of the
machine, and passing horizontally from one to the other, we fix stop bars, said
stop bars being for the swing levers or baulks to rest against. The stop bars are
fixed so as to come in about a line with the centres when they, the said catches,
are arranged in the machine. On the front part of the stop bars, when used for a
positive machine, are cast lugs or ribs so that when the catches or hooks, which
project towards the front of the machine, are depressed they engage and hold on
to the said lugs or ribs. These lugs or ribs on the stop bars are only necessary in
the case of a positive machine as, in a non positive machine the hooks or catches,
which project towards the front of the machine, are dispensed with.
When pegs are placed in the lags or pattern mechanism, they lift the heavy
ends of the feelers or indicating levers and in doing this the lighter ends of said
feelers or indicating levers are depressed.

page_text: The tails of the catches resting on the lighter ends of the feelers or indicating
levers, and the hooks projecting towards the back of the machine being heavier
than those projecting towards the frout, fall according to the distance the lighter
end, of the feeler or indicating lever is depressed.
When the catches or hooks which project towards the back of the machine are
lowered they engage with draw bars, said draw bars, having lugs or ribs formed
upon them for this purpose. The said draw bars extend across the machine and,
are arranged at one side with holes, through which, pass studs, holding said draw
bars in position but at the same time allowing them, the said draw bars, to work
loosely round them.
The said studs are fixed to a draw bar lever, said draw bar lever being mounted
on a stud fixed in the frame of the machine. The other ends of the draw bars
are made round and fit loosely into holes formed in a draw bar lever said draw
bar lever being also mounted on a stud fixed in the frame of machine.
The draw bar levers are made in two parts, the bottom part being arranged
with a boss, through which is a hole, by which it is mounted on the stud fixed in
the frame of the machine, over said boss is formed a radius hole and underneath a
slot hole, while at the bottom is a foot arranged to carry the draw bar. The top
part is made with a hole in it, so that it fits loosely on the boss of the bottom part,
above said hole is a bolt hole which comes, when the parts are fixed together,
opposite the radius hole in the bottom part, while on the top is a foot to carry the
draw bar. The draw bar lever at the opposite side is made same as above except
that instead of having feet at the top and bottom, round holes are arranged so as
to receive the round ends of the draw bars.
In the slot holes, in the bottom part of the said draw bar levers, are fixed studs
upon which small pulleys are loosely mounted, these pulleys work in slots made
in driving levers, said driving levers being fixed upon a shaft which passes through
the frames of the machine and derives its motion, from the low shaft of the loom,
by crank or other suitable mechanism. These driving levers being fixed to the
said shaft oscillate backwards and forwards and in so doing gives motion to the
draw bar levers.
The said draw bar levers being mounted on fixed studs, are compelled to move
in a radius, and the draw bars being secured to said draw bar levers, also move in
a radius round the fixed studs upon which the draw bar levers are mounted,
therefore when the hooks on catches engage or come into contact with the ribs or
lugs of the draw bars, they too are moved in the same radius as the said draw
bars, and these the said catches being mounted on the swing lever or baulk, causes
the said swing lever or baulk to move in the same radius as the said draw bars,
and by doing this gives motion to the said bell crank or heald lever upon which it,
the said swing lever or baulk, is mounted. By moving the studs, upon which the
pulleys are loosely mounted, and which are fixed in the slot holes of the draw bar
fevers, up or down we can regulate the movement of the draw bar levers and draw
bars, that is, we can get a greater movement by moving the studs up the slots,
and nearer the fixed fulcrum, thus getting further away from the fulcrum of the
driving levers, or a less movement by moving them down thus getting nearer the
fulcrum of the driving levers.
Again by placing the stud up the slot in one draw bar lever and down the slot
in the other draw bar lever, and altering the angles of said draw bar levers, they
having the radius holes arranged for this purpose, so that they will both commence
to work in one position, the draw bar lever which has the stud nearest its fulcrum
will move further than the one having its stud further away, and by these means
we can draw the catches and baulks or swing levers further at one side of the
machine than the other, although getting the motion to work both draw bar levers
from one shaft, thus getting a variable lift or shed.
Dated this 22nd day of June 1893.
JAMES HILL.
EDWARD HILL.

page_text: Improvements in Shedding Mechanisms of Looms.
We JAMES HILL of 35 Ethel Street Keighley in the County of York Machine
Maker and EDWARD HILL of the same place Machine 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 :-
It relates to improvements in shedding mechanism. both positive and non-
positive action, and consists of constructing and arranging the parts forming said
shedding mechanism, in such a manner that the efficiency thereof is greatly
enhanced.
In the accompanying drawings
Fig. 1. is a front elevation of our improved mechanism.
Fig. 4. is illustrative of the mechanism as seen from above.
Fig. 5. is a sectional view, the framework being omitted.
Figs. 2. 3. 6. 7. 9. 10. 11. 12 and 13 are drawings in detail and Figs. 8 and 14 are
sectional views of parts hereinafter fully described.
In carrying out our said invention we make use of bell crank or heald levers a
which, instead of fulcruming on a shaft as heretofore, we allow to rest and work in
the bottom of a trough b, said trough extending horizontally and being suitably
fastened to the framework 6' and 6 of our improved mechanism.
Over the fulcrum of the said bell crank or heald levers a, and just clear of a
radius part formed thereon, we place a rod or guard pin c in such a position as to
prevent the said bell crank or heald levers a from getting out of the trough b, when
they, the said levers are at work. Upon the said bell crank or heald levers a are
cast pins upon which we mount swing levers or haulks d, said swing levers or
baulks d having holes in their centre parts for this purpose.
Upon one side of the swing levers or baulks d, (see Fig. 6) and near the top and
bottom respectively, are cast two pins d' and d' upon which we mount two catches e
ande (see Fig. 7) they having holes in their centre parts to receive said pins d'
and d. To keep the catches e and e¹ on said pins d and d², holes d³ and dare
made through the centre parts of pins and d² and metal rivets (see Fig. 8) the
heads of which are sufficiently large to keep said catches e and el on said pins d'
and d', are inserted into the holes d' and d'. The catches e and e' are formed, in
the case of a positive action machine, with two hooks e³ and e³ above the centre
when mounted on the swing lever or baulk d, the hook e³ projecting towards the
front, and the hook e towards the back of the mechanism, while underneath the
centres are formed tail pieces et which project towards the back of the mechanism.
We make use of another trough f, which also extends horizontally and is suitably
fixed to the framework b¹ and ³, to receive the projections or pivots f¹ of feelers or
indicating levers and ³, (see Figs. 9 and 10,) said projections or pivots f¹ being
cast on the underside and at a suitable distance from the ends of the said feelers or
indicating levers f' and f³.
The feelers or indicating levers f and f³ are made heavier at one end than at
the other so that when fulcrumed or pivoted in the trough the heavier ends go
down causing the lighter ends to tilt up. The heavier ends project over and come
into contact with the lags and pegs or pattern mechanism k, said lags and pegs or
pattern mechanism being suitably arranged at the back of the machine, while the
lighter ends come into contact with the tail pieces e' of the catches e and e¹ which
are mounted on the swing levers or baulks d.
In suitable positions on the framework 6' and 6' and passing horizontally from one
to the other, we fix stop bars h and h¹, said stop bars and ¹ being for the swing
levers or baulks d to rest against.

page_text: The stop bars and are fixed so as to come about in a line with the centres of
the catches e and e', when they, the said catches are arranged in the machine. On
the front of the stop bars h and 4', when used for a positive action machine, are
cast lugs and h³, so that when the hooks e are depressed they engage with, and
and h³.
hold on too, the lugs
The lugs and ³ and hooks are dispensed with in a non positive action
machine. When pegs k¹ are placed in the lags or pattern mechanism k, said pattern
mechanism being operated by catch, they come into contact with, and lift the
heavy ends of the feelers or indicating levers f* and ƒ³ and in so doing the lighter
ends of said feelers or indicating levers fand f³ are depressed.
The tail pieces e* of catches e and e¹ rest on the lighter ends of the feelers or
indicating levers 2 and 13, and when these are depressed the hooks e fall
according to the distance the levers 12 and f³ are depressed, on account of the
hooks being heavier than the hooks e³, and by these means the hooks ³ are lifted
clear of the lugs and h³.
When the hooks e² are lowered they engage with draw bars m, said draw bars m
having lugs m³ formed on them for this purpose.
The said draw bars m extend across the machine and are arranged at one
side with holes m¹ through which pass studs n, (see Figs. 11 and 14) said studs n
holding said draw bars m in position but at the same time allowing them to work
loosely round them, the said studs n. The studs n are fixed to a draw bar
lever said draw bar lever being mounted on a studs fixed in the frame-
work 6 of the machine. The draw bar lever (see Figs. 2 and 3) is made in
two parts, the bottom part being arranged with a boss through which is a
hole, by which it is mounted onto the stud s, over said boss is formed a radius
hole, and underneath slot holes while at the bottom is a foot arranged to
carry the draw bar m. The top part is made with a hole so that it fits loosely on
the boss of the bottom part, above the hole is a bolt hole which comes,
when the parts are put together, opposite the radius hole in the bottom part,
while at the top is a foot to carry the draw bar m. There is another draw bar
lever for the opposite side (see Figs. 12 and 13) which is arranged same as above,
and which is mounted on a stud fixed in the frame work of the machine,
except that instead of the feet and round holes and are formed to
receive the round ends m² of the draw bars m.
In the slot holes are fixed studs s' upon which small bowls &² are loosely mounted.
These bowls & work in slots in driving levers s³, said driving levers being mounted
upon a shaft s which passes through the framework 6' and ' and derives its motion
from the motor shaft of the loom by crank or other suitable mechanism. The driving
levers being mounted on the shaft & oscillate backwards and forwards and in so
doing gives motion to the draw bar levers by reason of the pulleys s², which are
mounted on the studs s' fixed in the draw bar levers r, being arranged to work in
the slot holes of the driving levers s'.
The said draw bar levers r, being mounted on the fixed studs 8, are worked in a
radius round the fixed studs s by the said driving levers s³.
The draw bars m being secured to the draw bar levers r also move in a radius
round the fixed studs s upon which the draw bar levers are mounted, therefore
when the hooks e³, on catches e, engage with the lugs m³ on draw bars m, they
too move in the same radius as the draw bar m.
The catches e and e¹ being mounted on the swing lever or baulk d also work
in the same radius as the draw bars m and in so doing draw the bellcrank or heald
levers a upon which the said swing levers or baulks d are mounted.
When the swing levers or baulks d are being drawn forward they travel with
the draw bars m, and with the catches e and e₁ having hooks e³, when the swing
levers or baulks d are drawn forward at the top, or vice versa, they are held in
position at the bottom by the hooks e engaging and holding on to the rib ³ of the
stop bar h, and the swing levers or baulks d travelling with the draw bar m and
being held in position at the bottom by the hook es, when the draw bar m

page_text: commences to go back, it also pushes back the swing levers d to their original
position.
The swing levers or baulks d being mounted upon the bell crank or heald levers a,
they the said bell crank or heald levers a, are lifted up and pushed back to their
original position in a positive manner.
In a non-positive action machine we dispense with the ribs 2 and 3 and hooks ³
and it is then necessary to have some weight or spring to pull down the bell crank
or heald levers a after they have been drawn up. By moving the studs s', upon
which the pulleys are loosely mounted, up or down the slot holes in the draw
bar levers r, we can regulate the movement of the draw bar levers r and the draw
bars m that is, we can get a greater movement by moving the studs & up the slot
holes thus getting nearer the fixed studs and getting further away from the
fulcrum of the driving levers &³, or a less movement by putting them down thus
getting nearer the fulcrum s of the driving levers &³.
Again by placing the studs s¹ up the slot hole in one draw bar lever and down
the slot hole in the other draw bar lever, and altering the angles of the said draw bar
levers, they having the radius holes arranged for this purpose, so that they both
commence to work in one position, the draw bar lever which has the stud s¹ nearest
its fulcrum will move further than the one having the stud fixed further away from
its fulcrum, and by these means we can draw the draw bars m, the catches e, the
swing levers or baulks d and the bell crank or heald levers a, further at one side
of the machine than at the other, and thus get a variable lift in the bell crank or
heald levers a although getting the motion to work both draw bar levers from the
shaft s'.
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 framework 61 and 6, the trough b, the stop bars and ¹ having lugs h
and and the trough f, in combination, the same being arranged in the manner and
for the purpose, as herein set forth, and as illustrated by the accompanying
drawings.
2. The bell crank or heald levers a the trough b, the guard pin c, and the swing
lever or baulk d, in combination, the same being formed and constructed to operate
in the manner and for the purpose as herein specified.
3. The bell crank or heald levers a, the swing levers or baulks d, the catches e
and e' having hooks and e³ and tail piece et, and the draw bars m having lugs m³
in connection with which said catches operate, in combination, the same being
formed and arranged to operate substantially as herein specified and for the purpose
set forth.
4. The swing levers or baulks d having pins d' and d², and the holes d³ and d
through said pins d'and d², the rivets d' and the catches e and e¹, in combination,
the same being formed and constructed to operate in the manner and for the purpose
as specified.
5. The studs, the draw bar levers r, having bosses r¹, radius holes ², slot
holes, feet and r, holes bolt holes, holes 8 and 9, the draw bars m and
the studs n, in combination, the same being formed, constructed, and arranged to
operate in the manner and for the purpose substantially as specified.
6. The driving levers 3, the shaft the studs s', the pulleys ', and the draw bar
levers "", in combination, the same being formed and constructed to operate in the
manner and for the purpose substantially as specified.
7. The trough f, the feelers or indicating levers' and ƒ³ having pivots f¹, the
lags and pegs or pattern mechanism k, and the catches e and e¹ having tail pieces e¹,
in combination, the same being formed in the manner and for the purpose as herein
set forth and illustrated by the accompanying drawings.
8. The draw bars m having holes m', round ends m² and lugs m³, and the levers r
having feet and 77, and holes 7 and 7, and the studs n in combination, the same-

page_text: being formed constructed and arranged to operate substantially as herein specified
and for the purpose as herein set forth.
9. The stop bars h and h¹ having lugs and h³, the catches e and e¹ having
hooks and e, and the draw bars m having lugs m³, in combination, the same
being arranged to operate in the manner substantially as herein set forth.
Dated this 19th day of March 1894.
JAMES HILL.
EDWARD HILL.