IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1884

page_text: We, RICHARD LONGDEN HATTERSLEY of Keighley in the County of York,
Machine Maker, and JAMES HILL of the same place, Mechanic and JAMES ASQUITI
of the same place Mechanic, do hereby declare the nature of our Invention for
"IMPROVEMENTS IN LOOMS FOR WEAVING," to be as follows:-
The first part of our Invention has reference to certain horizontal shuttle box
levers employed for raising, and lowering the shuttle boxes, such levers receiving
their oscillatory motion from an eccentric or crank pin projecting from a pinion
wheel as fully set forth and shown in Drawings of previous Letters Patent granted
to the said Richard Longden Hattersley and James Hill on the 18th of July 1882
N° 3408 and on the 6th of July 1883 N° 3348.
The object of our present Invention is to counterbalance the weight of the
shuttle boxes, when they are being raised and lowered, so that the power required
to operate them is brought to a minimum, wear and tear of the various studs
reduced thereby; but should the parts wear and become loose, the horizontal
shuttle box levers are balanced in such manner that back-lash is avoided and the
eccentric or crank pin above named will thus more certainly place the moveable
shuttle boxes level with the sherr board.
This wo effect by the employment of a lever, or levers hinged upon a suitable
fulcrum, one end of such lever being attached to an adjustable spring, which draws
the opposite end of the lever downwards causing it to bear upon the horizontal
shuttle box lever in such manner, that the weight of the shuttle boxes are 80
evenly balanced as to allow of their free and easy movement either up or down.
We can effect the same object by means of spiral springs alone; without the
assistance of the lever referred to, in this case open spiral springs would be
connected direct to the shuttle box levers; preferably in such position as to impart
their balancing pressure on the horizontal shuttle box lever as near over tho
centre of the crank pin, or eccentric as practicable, in order to avoid excessive
pressure on the fulcrum of the said horizontal shuttle box lever, and be balanced
thereby.
The second part of our Invention has reference to the weft fork motion employed
in looms having rising and falling or circular shuttle boxes, and is a further
improvement upon prior Letters Patent granted to the said R. L. Hattersley and to
D. Bailey dated June 2nd 1881 N° 2426.

page_text: As in the previous case the weft fork is placed about the centre of the slay board,
and fixed to an oscillatory rod mounted in bearings fixed to the front of the slay
board, and extending to that part of the loom opposite the lever for knocking off.
Upon this oscillatory rod we now fix a boss having two arms, or two bosses, each
having an arm, to both of which arms are attached fingers projecting towards the
breast beam. One of these fingers is angular or with an inclined surface, вO
that at each movement of the slay towards the breast beam, the inclined finger
comes into contact with a hanging lever (hinged to parts connected with the
knocking off lever), and pushes the said lever away, but the hanging lever is so
hinged or constructed that as the inclined finger returns with the receding slay
the hanging finger remains rigid, the inclined finger being depressed; thereby
causing the oscillatory rod to rock upon its centres, and lift up the weft fork.
As soon as the slay has carried the inclined finger past the hanging lever, the
said finger rises again, consequently the oscillatory rod rocks in the opposite
direction, causing the weft fork to lower in the groove, and if weft is present,
the loom continues to proceed, but if weft is absent, the weft fork would lower
sufficiently far into the groove, as to cause the second finger on the oscillatory
rod, with the assistance of a small spiral spring to come opposite a projection
in connection with the knocking off lever, which it would strike and the loom
would be stopped thereby.
1001

page_text: We, RICHARD LONGDEN HATTERSLEY of Keighley in the County of York,
Machine Maker, and JAMES HILL of the same place, Mechanic, and JAMES
ASQUITI of the same place, Mechanic, do hereby declare the nature of our
Invention for "IMPROVEMENTS IN LOOMS FOR WEAVING," and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:—
The first part of our Invention has reference to certain horizontal shuttle box
levers, employed for raising and lowering the shuttle boxes, such levers receiving
their oscillatory motion from an eccentric or crank pin projecting from a pinion
wheel as fully set forth and shown in Drawings of provious Letters Patent granted
to the said Richard Longden Hattersley and James Hill on the 18th of July 1882
No 3408 and on the 6th of July 1883 N° 3348.
The object of our present Invention is to counterbalance the weight of the shuttle
boxes, when they are being raised and lowered, so that the power required to
operate them is brought to a minimum, wear and tear of the various studs reduced
thereby; but should the parts wear and become loose, the horizontal shuttle box
levers are balanced in such manner that back-lash is avoided and the eccentric or
crank pin above named will more certainly place the moveable shuttle boxes level
with the "sherr" board.
In order that this Invention may be better understood, we herein give reference
to the accompanying Sheets of Drawings, wherein Fig. 1 is end elevation of so
much of a loom as is necessary to show the application of our improvements.
A are the shuttle boxes connected by rods B to the levers C by which the boxes are
raised and lowered, the said levers C being operated by segment D gearing with
pinion E carrying crank pins a projecting from the blocks F which work in slots
formed in the end of the levers C as fully set forth in previous Letters Patent.
In the practical working of these levers it is found that the shuttle boxes are not
evenly balanced, consequently in rising and falling, their unbalanced weight causes
wear and tear of the studs, allowing certain back-lash to follow which is very
undesirable in quick running machinery.
To avoid this we employ levers G having points b which are forced upon the
ends of the shuttle box levers C by means of spiral springs H. We arrange that
the pressure of the points b shall be directed immediately over the blocks F so as to
remove excessive pressure off the fulcrum of the shuttle box levers.
The adjusting screws I are employed so as to regulate the pressure of the springs
upon the levers by which means the shuttle boxes are evenly balanced allowing
them to work freely up and down, thereby reducing wear and tear of the studs and
parts connected therewith. We would observe that we can balance the shuttle
boxes by means of spiral springs alone, without the assistance of the lever G
referred to; in this case open spiral springs would be connected direct to the
shuttle box levers C preferably in such position as to impart their balancing
pressure on the horizontal shuttle box lever C as car over the centre of the crank
pin or eccentric as practicable, in order to avoid excessive pressure on the fulcrum
of the said horizontal shuttle box lever; or a dead weight may be placed on the
end of the said levers, which would effect the same purpose.
The second part of our Invention has reference to the weft fork motion employed
in looms having rising and falling or circular shuttle boxes, and is a further
improvement upon prior Letters Patent granted to the said R. L. Hattersley and
to D. Bailey dated June 2d 1881 No 2420.

page_text: As in the previous case the weft fork is placed about the centre of the slay board
and fixed to an oscillatory rod mounted in bearings fixed to the front of the slay
board, and extending to that part of the loom opposite the lever for knocking off.
This part of our Invention is shown on Sheet 2 where Fig. 2 is cross section of
loom showing our weft fork motion in the position it assumes when weft is present
and the slay board as far from the breast beam as the crank will take it, Fig. 3
shows the parts in the position they assume when the slay board has approached
some distance towards the breast beam, whilst Fig. 4 is plan view of Fig. 2.
A is the loon framing, B the breast beam and C the slay board which has a
groove cut in it at D, about midway of its length for receiving the weft fork E
attached to a boss ou a horizontal rod F which is supported at each end by
centres Gattached to the front of the slay board. On this rod are two bosses a
having lugs b thereon to which is secured by set screws, fingers c and d pointing
towards the breast beam for purposes hereinafter explained. His an arm connected
to the usual knocking off lever I, and J is the strap guide for transferring the
driving strap from the fast to the loose pulley. K is a lever hanging from the
bracket Lattached to the arm H. This lever is provided with a pine which bears
upon the said arm H in such manner as to allow the hanging lever K full liberty
to move forward towards the breast beam but is prevented from moving back ward
as will be understood hereafter.
The modus operandi is as follows, If weft is present as shown in Fig. 2 and
the slay board is about to return to the breast beam, the inclined finger c would
como in contact with the hanging lever K which it would push outward as seen in
dotted line Fig. 3, the advancing slay board taking the finger c past the hanging
lever Kallowing the said lever to drop into its vertical position again, so that whe
the slay board began to return, the inclined finger c would pass underneath the
hanging lever K which is now made rigid by the pine coming into contact with
the arm causing the inclined finger c to be lowered as seen in Fig. 3, the effect
of which is to cause the horizontal rod F to rock upon its centres, and so lift up
the weft fork E until a shoot of weft has been sent across the loom by which time
the inclined finger will have passed the point of the hanging lever K allowing the
rod F to rock in the opposite direction and the weft fork to descend thereby.
If on the weft fork descending there is a shoot of weft laying on the shuttle race,
the weft fork would be supported thereby and could not descend into the groove D,
consequently the loom would continue to proceed, if however, the weft was absent
from any cause, the weft fork would descend to the bottom of the groove D,
thereby raising the finger & as shown in dotted line in Fig. 2, and placing it in
such position opposite the end of the arm H, as, that when the slay board returned
again towards the breast beam, the finger & would strike against the said arm H
pushing it away, and removing the strap guide J out of its notch in the plate M and
stop the loom thereby.
To insure the weft fork descending far enough into the groove D when weft is
absent, a small spring fis placed on the horizontal rod, one end of the said spring
being fastened to the small bracket g so as to give the necessary twist to the rod
as will be well understood.
By the employment of parts such as are herein shown and described a positive,
reliable, and self-acting weft stop motion is obtained.
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,
Firstly. The employment of levers, springs, or weights either separately, or
combined for balancing the shuttle boxes, in manner substantially as heroin shown
and described in the first part of this Specification.
Secondly. The use and employment of the moveable inclined finger c for purposes
substantially as described.

page_text: Thirdly. The combination of the two fingers c and d operated in manner and for
purposes set forth.
Fourthly. In combination with the two fingers c and d of the hanging lever K
for purposes substantially as set forth.