AN IMPROVED APPARATUS FOR CHECKING OR ARRESTING THE MOTION OF SHUTTLES EMPLOYED IN CERTAIN CLASSES OF QUICK RUNNING LOOMS
Year: 1884

page_text: We JAMES SMITH of Rock Terrace, Brockholes, Loom-tuner, GEORGE ROEBUCK
of Hollin Greave, New Mill, Loom-tuner and JOHN HIRST, of Brockholes, Practical
Engineer, all in the County of York, do hereby declare the nature of said invențion
for "AN IMPROVED APPARATUS FOR CHECKING OR ARRESTING THE MOTION OF
SHUTTLES EMPLOYED IN CERTAIN CLASSES OF QUICK RUNNING LOOMS" to be as
follows:-
According to this invention the picker after it has picked the shuttle across the
shed and has returned into its former position (that is close to and against the end
of the shuttle box carrier) does not remain stationary until the shuttle is again
driven against and stopped by it, but is caused to advance a little to meet the
shuttle so as to break the shock, and reduce the injury which is done to it by the
impact of the sharp shuttle top. This prevents or retards the formation of
the recess or hole in the picker which usually interferes with the raising or
lowering of the shuttle box and necessitates the picker being repaired or shortened.
Each picker is caused to advance to meet the shuttle by means of straps or other
flexible connections attached to the wooden picker arms, and so arranged that
when the loom is at work the said straps draw the pickers forward as the sley
moves backwards, away from the breast beam, and when the loom is standing or
is being pulled round by hand, the said straps are slack, and exercise no influence
upon the pickers.
In one form of apparatus according to our invention, applicable for instance to
that class of loom known as the Knowles American Patent Loom there is arranged
below the wooden breast beam, a rocking shaft provided with a handle at each end
for stopping or setting the loom in motion.
To this rocking shaft we fix two small cranks or cams, which control bell crank
levers pivotted to the breast beam.
These cranks or cams engage with (say) the shorter arms of the bell crank levers
and in one position they hold the bell cranks fixed, while in another position they
leave them loose.
To the other or longer arms of the bell cranks (which hang down nearly
perpendicularly when in working position) the before mentioned straps are
connected. The said straps are also attached to a fixed support placed between
the bell cranks.

page_text: The fixed support and the bell cranks are placed in such a position that when
the latter are held fast by the cranks or cams the' to and fro motion of the shuttle
box carriers sufficiently tighten the flexible straps or connections to cause the
pickers to advance towards the shuttles at the proper time.
Thus it will be understood that when the starting lever is moved so as to set the
loom in motion, the bell crank levers and cranks or cams are in the position just
described. When the starting lever is moved in the opposite direction, that is for
stopping the loom, the cranks or cams will have moved so as to allow the bell
cranks to radiate sufficient to permit the flexible straps or connections to become
slack.
By setting the loom in motion the checking or arresting mechanism will be
simultaneously brought into action, and when the loom is stopped the checking or
arresting mechanism will be thrown out of gear, so as to allow of the shuttle boxes
being raised or lowered for pulling out any bad work.
Instead of using the above mentioned rocking shaft, it may be advantageous in
some cases to provide an independent crank or cam shaft which may or may not
be attached to the strap guide so as to work automatically or independently.
We would have it understood that apparatus of the kind referred to may be
constructed in modified forms to suit different or similar classes of quick running
looms without departure from the essential features of our invention.
T
1001
W. LLOYD WISE,
Per F. J. Brougham,
Applicants' Agent.
اهر

page_text: COMPLETE
We JAMES SMITH of Rock Terrace, Brockholes, Loom Tuner, GEORGE ROEBUCK,
of Hollin Greave, New Mill, Loom Tuner, and JOHN HIRST, Brockholes, Practical
Engineer, all in the County of York, do hereby declare the nature of said
invention for AN IMPROVED APPARATUS FOR CHECKING OR ARRESTING
MOTION OF SHUTTLES EMPLOYED IN CERTAIN CLASSES OF QUICK RUNNING LOOMS
to be as follows:-..
THE
According to this invention the picker after it has picked the shuttle across the
shed and has returned into its former position (that is colose to and against the
end of the shuttle box or carrier does, not remain stationary until the shuttle is
again driven against and stopped by it, but is caused to advance a little to meet
the shuttle and fall back as the two come in contact so as to break the shock,
steady the shuttle, and prevent the bobbin from sloughing its weft, and reduce the
injury which is done to the shuttle and the picker by the impact of the sharp
shuttle tip.
This prevents or retards the formation of the recess or hole in the picker which
usually interferes with the raising or lowering of the shuttle box, and necessitates
the picker being repaired or shortened.
Each picker is caused to advance to meet the shuttle by means of straps or other
flexible connections attached to the wooden picker arms, and so arranged that
when the loom is at work the said straps draw the pickers forward as the sley
moves backwards away from the breast beam, and when the loom is standing or is
being pulled round by hand the said straps may be slack, so as not to exercise any
influence upon the pickers.
The accompanying sheet of drawings illustrates our improved apparatus for
checking or arresting the motion of shuttles employed in certain classes of quick
running looms, in this case applied to the loom known as the Knowles American
Patent Loom in which so much of the said loom is shewn as to make our invention
clear.
Fig 1. is a plan, shewing part of the breast beam A. removed for sake of
clearness.
Fig. 2. is a front elevation. Figs. 3. 4 and 5. are sectional end elevations shewing.
the breast beam, also levers etc. in different positions for the purpose hereafter
explained.
Fig. 6. is an elevation of a catch or detent.
Fig 7. is a plan of the same.
Figs 8. and 9. represent the bell crank lever, and crank or cam. Fig 10. is a
side elevation of the crank or cam.
There is arranged below the wooden breast beam A. a rocking shaft B. which
extends the full length of the breast beam A. and through the loom frame
sides A' A¹ as shewn in Figs. 1 and 2.
Each end is provided with a handle C. for stopping or setting the loom in
motion,

page_text: To this rocking shaft B. we fix in this case one small crank or cam D. for the
purpose of raising the shorter arm of the bell crank lever E. which is pivotted to
a fixed support or joint F secured to the inner side of breast beam A. as shewn in
Figs 3. 4 and 5.
The crank, or cam D. engages with (say) the shorter arm of the bell crank
lever E. and forms a prop or support for retaining it in that position (that is when
the loom is in motion and the handle C. is in the position indicated by the dotted
line C. in Fig. 3).
When the said handle is moved into the position indicated by dotted lines C. in
Figs 4. and 5. the crank or cam D. has moved, so as to allow the bell crank to
drop into the position shewn in Fig 4. in this case the loom is supposed to be
stopped.
.
To the other or longer arm of the bell crank lever E. one end of a short flexible
connection or strap G. Figs. 1. 3. and 4. is attached. The other end of the said
strap G. is hooked or otherwise secured to a kind of slotted buckle or snatch
block H. Figs 1 & 3.
+
•
Through the two slot holes formed in the buckle H the straps J and J¹ pass as
shewn in plan Fig. 1. One end of each being anchored, respectively to the slotted
fixings K and K₁ as shewn in Figs 1 and 3.
Their other ends are carried forward and coupled to the wooden picker arms (not
shewn in the drawing).
The slotted fixings K. K¹ Figs 1 and 3. are secured to the under side of the
sley L. as shewn in Fig. 3. and are fixed at equal distances on each side of the
bell crank lever E. which is placed about the centre line of the loom, and at such
a distance apart that by the to and. fro motion of the sley and fixings K. K' the
flexible straps or connections slide through the buckle H. and slotted fixings K. K¹
sufficiently to become tightened and to cause the pickers to advance towards the
shuttle at the proper time, which is when the crank is at or about its back centre
or end of its backward stroke.
Thus it will be understood that when the starting lever or handle C. is moved
into the position shewn by the dotted line C. Fig 3. to set the loom in motion, the
bell crank lever E. and crank or cam D. are automatically moved into the position
shewn in Fig. 3. and the checking apparatus brought into gear.
When the starting lever C. is again moved into the position indicated by dotted
line C. in Fig. 4. the loom is stopped, and the checking apparatus is put out of gear
by the bell crank lever being relieved so that it can radiate and permit the flexible
connection G. and flexible straps or connections J. J¹ to become slack.
Thus by setting the loom in motion the checking or arresting mechanism will be
simultaneously brought into action and when the loom is stopped the checking or
arresting mechanism will be thrown out of gear so as to allow of the shuttle boxes
being raised or lowered for pulling out bad work.
We find it advantageous instead of using the above mentioned rocking shaft in
some cases to provide an independent crank or cam shaft, or its equivalent which
may or may not be attached to the strap guide lever C. so as to work automatically
or independently as required.
To work the checking or arresting mechanism independently we provide a detent
or hooked lever M. Figs. 6. and 7. which is pivotted to a vertical axis secured to
the underside of the breast beam A. as shewn in Figs. 3. 4. 5. and 6.
It is so arranged that when the bell crank lever E. is in the checking position
shewn in Figs. 3. and 5. the hooked end of the catch or detent M. catches against
the front side of bell crank E and retains it in that position, so that the loom may
be stopped and yet the checking mechanism be in action as shewn in Fig. 5.
To the other arm of the detent or hooked lever a suitable spiral spring N. is
attached placed out of the way under the breast beam and is for the purpose of
keeping the detent or catch lever M in gear.
To the same arm a suitable wire connection P. is also attached, which extends
in the opposite direction, that is towards the right band side of the loom and is

page_text: attached to a hand lever Q. Figs. 1. and 2. so that when the loom is stopped and
the checking or arresting mechanism in gear as shewn in Fig 5. by simply moving
the handle the bell crank is released and the checking or arresting mechanism
thrown out of gear as shewn in Fig. 4.
+
We find it is advantageous in the majority of cases not to have the stopping and
starting lever C. to work the checking or arresting mechanism automatically as
by a simple movement of the lever the checking or arresting mechanism is
released.
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
•
1. In apparatus for checking shuttles the use in combination with a check strap
or check straps of a lever which is automatically put into position by a cam or
crank to tighten the said check straps when the loom is set in motion substantially
as described.
2. In apparatus for checking shuttles the use in combination of a check strap or
check straps, a lever, a crank or cam, and a buckle or snatch block on the said
strap or straps, substantially as described and illustrated.
3. In combination with apparatus of the kind referred to in the previous claim
the use of a detent capable of being released by hand to maintain the checking
apparatus in its working position when the loom is stopped substantially as
described.
4. The apparatus for checking shuttles constructed arranged and operating
substantially as described with reference to the drawings.
Dated this eleventh day of February 1885.
JAMES SMITH.
GEORGE ROEBUCK.
JOHN HIRST.
Witness,
F. M. C. SCOTT,
Patent Agent,
89, Victoria Street, Liverpool.