IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR REGULATING AND LOCKING SHUTTLE BOXES IN LOOMS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I JAMES POOLE of N° 3 Whitley Street, Leeds Road, Bradford, in the County
of York, Overlooker, do hereby declare the nature of my Invention for
IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR REGULATING AND
LOCKING SHUTTLE BOXES IN LOOMS, to be as follows:-
;--
My invention relates to certain improvements in apparatus for regulating shuttle
boxes in looms, and has for its object the arrangement of the mechanisin in such a
manner, that the boxes are changed from one position to another with certainty
and little vibration to the boxes when brought to a stand; and to be enabled to
adjust the height of each box separately and lock them in position each time the
shuttle is thrown across the "shed."
This I accomplish by placing a lever between two discs and mounting them on
a stud as fulcrum, on which I also place a spiral spring to regulate the amount of
friction between the lever and discs. Near to one end of this lever I secure a
weight, and also attach a rod which receives an oscillating motion from one of the
loom shafts; the upper portion of the said rod is of such configeration as to fit each
of a series of projections on a sliding plate. This plate has projections corresponding
with the number of shuttle boxes, and is actuated by levers in connection with the
pattern surface of a dobby" or card motion, which causes the plate to be moved
into the position that the corresponding projection to the pattern of the fabric comes
in contact with the oscillating rod, thereby actuating the bottom or first named
lever, and raising or lowering the shuttle boxes and at the same time locking
them.
"
In order to reduce the vibration and further lock the boxes I secure to the first
named lever an arm in such a manner that the same will yield when required, and
to which is fitted a number of adjustable teeth. In connection with these teeth
works a rod, one part of which fits into a space between the teeth every time the
boxes are in position to deliver or receive a shuttle thus locking the boxes at
another point, and in order to facilitate the putting in or taking out of any of the
shuttles, I place a foot lever in a convenient position which when pressed down
liberates the boxes so that they can be raised or lowered by hand,
Dated this 1st day of January 1884.
JOHN WAUGH,
Agent for the said James Poole,

page_text: I, JAMES POOLE of 3 Whitley Street Leeds Road, Bradford in the County of
York Overlooker do hereby declare the nature of my invention for IMPROVEMENTS
IN THE METHOD OF AND APPARATUS FOR REGULATING AND LOCKING SHUTTLE
BOXES IN LOOMS, 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 certain improvements in apparatus for regulating
shuttle drop boxes in looms, and has for its object the arrangement of the
mechanism in such a manner that the drop boxes are changed from one position to
another with certainty and with little vibration to the boxes when brought to a
stand; and to be enabled to adjust the height of each box separately and lock
them at the requisite height cach time the shuttle is thrown across the "shed;"
and consists in mounting to a lever an oscillating arm which engages with a
sliding plate on which are projections which move the drop boxes; and to the
opposite end of the said lever are secured adjustable teeth which lock the drop
boxes and reduce the vibration of the same when brought to a stand.
In order that the invention may be better understood, I will describe the same
in detail, reference being made to the accompanying drawings in which Fig 1
represents the end elevation of a loom to. which my improved apparatus is added.
Fig 2 is a side view of an ordinary dobby machine fixed in the usual position and
shews the connecting lever for actuating the sliding plate. Fig 3 is a detail
shewing the arm in one position for lowering the drop boxes. Fig 4 shews the
arm in position for raising the drop boxes. Fig 5 is an enlarged detail of the
quadrant with two of the adjustable teeth attached thereto. Fig 6 is an elevation
of the sliding plate and bracket for supporting same and Fig 7 is a plan of the
lever.
The loom is of the ordinary drop box description, the drop boxes being attached
to the regulating and locking apparatus by the rod A. The lever B is placed
between two discs C and C¹and mounted on a stud as fulcrum, upon the said
stud is placed a spring S which is compressed between the nut B2 and dise C. to
regulate the amount of friction between the discs and lever B for keeping the drop
boxes in the same position between one change and another, when the arm D
and teeth are respectively clear of the sliding plate G and arm N. Near to one
end of the said lever is secured a weight W for balancing the drop boxes, and the
arm D is jointed to the lever and which receives a reciprocating motion by means
of revolving eccentric E.
The upper portion of arm D at F is of angular form, corresponding to the angle
of the projections 1. 2. 3 and 4 on the sliding plate G which is actuated by lever H
operated upon by the pattern surface or tappets of varying heights on chain J
mounted on cylinder C2 on the same shaft as the dobby cylinder which receives the
usual vertical reciprocating motion in the ordinary manner: the end of lever H is
kept in contact with the tappets on chain J by spring S³.
When the sliding plate G is moved in the manner described, the reciprocating
arm D is brought into contact with one of the projections on the sliding plate G,
thereby raising or lowering the said arm D causing the lever B to move on its
fulcrum and raise or lower the shuttle boxes K. Fig 3 represents an elevation of
the arm in contact with the sliding plate against the top side of number 4
projection, and by the eccentric E revolving and moving the arm in the direction
of the arrow, the angular part of arm at F slides up the projection, thereby causing
the arm D to rise and the drop boxes K attached by rod A to the opposite end of

page_text: the lever to lower. In Fig 4 the angular part of arm is against the underside of
number 1 angular projection on sliding plate G, the revolving eccentric will then
draw arm causing it to lower and the drop boxes to rise, thus by changing the
position of the sliding plate G, the arm D is brought into contact with different
projections on the sliding plate, which cause the drop boxes to rise or fall as the
case may be.
Each time the drop boxes are moved they are locked at the end of the lever B,
by which the vibration of the boxes when brought to a stand is reduced, this is
accomplished by securing the adjustable teeth L to a quadrant Q at the end of
extended part of lever B at B¹, and working in conjunction with the teeth is a
lever M having an arm N secured thereto with projecting teeth that pass into
the spaces between the adjustable teeth L as shewn by Fig 1, thereby retaining
the drop boxes in a stationary position during the reception or delivery of the
shuttle.
The revolving tappet P actuates the lever M which is mounted on stud T, and
when the end at M₁ is depressed by the tappet, the teeth on arm N are clear of the
teeth L, thus allowing the drop boxes to be moved by the sliding plate and arm D
in the manner as before described. On the swell part of the tappet P leaving the
lever M, the drop boxes will have changed and the spring S₁ will raise the
lever, causing the before mentioned teeth to interlock, thereby locking the drop
boxes K.
By adjusting the position of the teeth L on the quadrant, the height of the drop
boxes is regulated so that the same will deliver or receive the shuttle most suitable
to the " warp shed."
The foot lever R is mounted on a stud, and has an arm R¹ projecting therefrom
which is in contact with the arm N; by pressing down the foot lever when the
arm D is back as shewn by Fig 1, the shuttle boxes can be raised or lowered by
band, the same being balanced by weight W, and the shuttles put in or taken out
as required.
The lever B is jointed to the extended part B' at X by the claw teeth V, and
the two parts of the lever are held together by bolt and spring S² which will yield
and allow the part B to move, should any portion of the locking apparatus in
connection with B' become deranged, or the drop boxes held by anything coming
in contact with them which will prevent them moving, thereby preventing
breakage to the mechanism.
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
1. The regulation of drop boxes K by the arm D acting upon the sliding plate G
substantially in the manner described and as illustrated by the accompanying
drawings.
on
2. The locking of drop boxes by the adjustable teeth L on quadrant and the teeth
arm N substantially in the manner described and as illustrated by the
accompanying drawings.
3. The adjustable teeth L for the purpose of regulating the height of the shuttle
boxes.
WAUGH & CHAPMAN,
Agents for the Applicant.