Improvements in the Method-of-and-Apparatus for Checking Shuttles in Looms for Weaving.
Year: 1895

page_text: Date of Application, 5th June, 1895
Complete Specification Left, 4th Mar., 1896-Accepted, 4th Apr., 1896
Improvements in the Method-of-and-Apparatus for Checking
Shuttles in Looms for Weaving.
We, WILLIAM MCNICHOL of Co-operative Buildings, Healds Road Dewsbury,
in the County of York, Manager and THOMAS HENRY NEWSOME of "Longlands,"
Dewsbury aforesaid, Manufacturer, do hereby declare the nature of this invention
to be as follows:-
This invention refers to the method of an apparatus for checking or arresting the
shuttles on their arrival in the shuttle boxes of looms for weaving, the object of our
improvements being to prevent violent concussion of the parts and damage to the
pickers and shuttles.
In carrying out our invention we attach to the "going part" or running board a
bracket carrying guide pulleys or bell crank levers, over which are passed, or to
which are connected, two straps cords, chains, metal bands, or links attached
respectively to the picking sticks at each side of the loom and connected at the
opposite ends to a bracket or sliding piece carried on the end of a suitably shaped
lever pivotted in adjustable bearings secured to the back rail or other fixed part of
the loom. The said lever carries a bowl with which engages a suitably shaped cam
or tappet mounted on the bottom shaft of the loom, said bowl being held in contact
with the cam by means of a strong spring attached at one end to the lever and at
the opposite end to a fixed stud.
For the greater part of a revolution the cam holds the lever in an elevated
position and allows the cords or chains to be paid out or eased so that the picking
sticks are free to be actuated by the ordinary picking mechanism, but on the
completion of a revolution the lever lowers, its descent being ensured by the spring
before named, and the cords or chains are thereby drawn downwards over the guide
pulleys, or the bell crank levers are oscillated and pulls the picking sticks forward a
short distance to meet and check the incoming shuttle.
The bracket or sliding piece on the end of the lever may be slotted and made
adjustable vertically or horizontally, but, by preference, it is pivotted to the lever
and is adapted to slide endwise thereon within the limits of a slot in said lever so
as to move in unison with or give to the motion of the going part. The chains or
cords may, however, if desired be connected direct to the lever.
We may reverse the position of the lever with respect to the cam as found most
convenient.
·וה .
001
Mo 1805
TASKER & CROSSLEY,
Halifax, Agents for the Applicants.

page_text: Improvements in the Method of and Apparatus for Checking
Shuttles in Looms for Weaving.
We, WILLIAM MCNICHOL of Co-operative Buildings, Healds Road, Dewsbury,
in the County of York, Manager, and THOMAS HENRY NEWSOME, of" Longlands,"
Dewsbury, aforesaid, Manufacturer, 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 refers to the method of and apparatus for checking or arresting
the shuttles on their arrival in the shuttle boxes of looms for weaving, the object of
our improvements being to prevent violent concussion of the parts and damage to
the pickers and shuttles.
"
In carrying out our invention we attach to the " going part or running board a
bracket carrying guide pulleys or bell crank levers, over which are passed, or to
which are connected, two straps cords, chains, metal bands, or links attached
respectively to the picking sticks at each side of the loom and connected at the
opposite ends to a bracket or sliding piece carried on the end of a suitably shaped
lever pivotted in adjustable bearings secured to the back rail or other fixed part of
the loom. The said lever carries a bowl with which engages a suitably shaped
cam or tappet mounted on the bottom shaft of the loom, said bowl being held in
contact with the cam by means of a strong spring attached at one end to the lever
and at the opposite end to a fixed stud.
For the greater part of a revolution the cam holds the lever in an elevated
position and allows the cords or chains to be paid out or eased so that the picking
sticks are free to be actuated by the ordinary picking mechanism, but on the
completion of a revolution the lever lowers, its descent being ensured by the spring
before uamed, and the cords or chains are thereby drawn downwards over the guide
pulleys or the bell crank levers are oscillated and pull the picking sticks forward a
short distance to meet and check the incoming shuttle.
Such being the nature and object of our invention we will now fully describe
the same, reference being had to the annexed sheets of drawings forming a part of
this Specification, in which :-
Fig. 1 is elevation of our improved motion for checking shuttles on entering the
shuttle boxes in looms for weaving, and Fig. 2 is plan of same.
Referring to the drawings A represents the bottom or other convenient and
suitable shaft of the loom on which is mounted a cam or tappet B adapted to engage
with a friction bowl or small pulley C carried by a lever D pivotted at E to a
bracket F bolted to the back rail or other fixed part of the loom. To the free end
of lever D are secured two straps, cords, or chains G, G₁, which are passed
respectively over pulleys H, H', carried at the back of the slay or "going part" I
and attached at their opposite ends to the picking sticks (not shewn) at each side
of the loom somewhat as ordinary checking straps are attached to the picking
sticks. The bowl C is held constantly in engagement with the cam B by a
strong spiral spring J secured at one end to the lever D and at the opposite end to
the foot or bracket K. When the larger diameter of the cam B or that portion
which is concentric with the axis A is presented to the bowl C it raises the lever D
to an elevated position as shewn in dotted lines in Fig. 1 where it is held until the
loom has picked in order that the straps G, G¹, may be paid out or slackened
sufficiently as not to interfere with the ordinary movement of the picking sticks
when sending the shuttles across the loom, but immediately the shuttles have
passed out of the boxes the rotation of the cam B presents its smaller radii under
the bowl C and allows the lever D to be drawn down by the spring J to its lowest
position as shewn in full line on the drawings. This downward movement of the

page_text: lever D draws the straps G, G' over the pulleys H, H', in the direction indicated
by the arrows and thereby pulls the picking sticks forward a short distance into
the shuttle boxes to meet and check the incoming shuttles. The lever is raised and
lowered as above set forth at every revolution of the cam B which is timed to act
in accordance with the picking mechanism.
Instead of a spring for drawing down the lever D, we may employ a cam plate B
see Figs. 3 and 4 having a cam groove B₁ therein into which projects a bowl or
pulley C secured on the side of the lever D, the lever thus being raised and lowered
direct by the cam. The pulleys H, H¹, can be replaced by a suitable slotted
bracket H as shewn in Figs. 3 and 4 or by bell crank levers as may be preferred.
The parts connecting together the lever and check straps G, G¹, are adjustable
and allow for the angular movement of the "going part."
We may reverse the position of the lever with respect to the cam as found most
convenient.
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 :-
The improved apparatus for checking and arresting the shuttles on entering
the shuttle boxes of looms for weaving substantially as herein shewn and
described.
DL:
As Much 2008
TASKER & CROSSLEY,
Halifax, Patent Agents.