IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1864

page_text: LETTERS PATENT to David Dalglish, of Glasgow, in the County of Lanark,
North Britain, Manufacturer, for the Invention of "IMPROVEMENTS IN
LOOMS FOR WEAVING."
Sealed the 16th September 1864, and dated the 17th March 1864.
PROVISIONAL SPECIFICATION left by the said David Dalglish at the
Office of the Commissioners of Patents, with his Petition, on the 17th
March 1864.
I, DAVID DALGLISH, of Glasgow, in the County of Lanark, North Britain,
Manufacturer, do hereby declare the nature of the said Invention of “Iк-
PROVEMENTS IN LOOMS FOR WEAVING," to be as follows, that is to say:-
This Invention of improvements in looms for weaving has for object the pre-
venting by automatic means of the taking up of the cloth when the weft thread
fails, or in the case of loose-reed looms when the shuttle is caught in the shed;
and the Invention consists in providing a simple direct connection between
the weft fork stopper details, the belt lever, and the holding catch of the take-
up ratchet wheel, so that on the weft failing the catch is taken out of gear
simultaneously with the throwing off of the belt lever.
In one modification the weft fork being carried on the inner end of a
lever jointed at its outer end on the catch, plate, or on the extremity of the
breast beam, and lying against the belt lever, also lies against a small vertical
lever, on the spindle or boss of which there is an arm disposed under the holding
catch of the take-up ratchet wheel, and when the weft fork lever moves

page_text: forward it throws off the belt lever and shifts the other lever, whereby the
catch is taken out of gear. The return of the catch is prevented until the
loom is again started by a hook or catch on the belt lever engaging with a
projection on the weft fork lever, and keeping this lever in the position in
which it holds the catch out of gear, but these parts are arranged in such a
Iway that the belt lever can be thrown off without interfering with the weft
fork lever or with the lever that moves the catch. If the weft fails when
the shuttle is being thrown to the side having the fork, in looms with one fork,
the take-up requires no attention or adjustment on re-starting, but if it fails
when being thrown from that side the propelling catch of the take-up will
make one stroke too much, which may be corrected by the attendant holding
back the catch lever for one stroke on re-starting. Looms with two weft
forks require no adjustment in any case. In the case of loose reed looms the
details in connection with the reed are by a convenient arrangement made to
act on the weft fork lever, so that when the shuttle is caught in the shed the
belt lever is thrown off, and the take-up stopped just as when the weft fails.
To those practically acquainted with looms it will be obvious that the details
may be easily modified to suit the various arrangements of weft fork and
take-up details, and that the propelling catch of the take-up motion may
be acted upon instead of the holding catch.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said David Dalglish in the Great Seal Patent Office on the 16th
September 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, DAVID
DALGLISH, of Glasgow, in the County of Lanark, North Britain, Manufacturer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventeenth day of March, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-seventh year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said David Dalglish, Her special licence that I, the said David Dalglish, my
executors, administrators, and assigns, or such others as I, the said David
Dalglish, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel

page_text: Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN LOOMS POR
WEAVING," upon the condition (amongst others) that I, the said David Dalglish,
my executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and ascertain
the nature of the said Invention, and in what manner the same was to bo
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said David Dalglish, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement in writing, reference being had to the accompanying Drawings, and
to the letters and figures marked thereon, that is to say :-
My said Invention of improvements in looms for weaving has for object the
preventing by automatic means of the taking-up of the cloth when the weft
thread fails, or when, in the case of loose-reed looms, the shuttle is caught in
the shed; and my Invention consists in providing a simple direct connection
between the weft fork stopper details, the belt lever, and the holding catch of
the take-up ratchet wheel, so that on the weft, failing the catch is taken
out of gear simultaneously with the throwing off of the belt lever. The same
or similar details are acted upon by a catch in connection with the loose
reed when the shuttle is caught in the shed, and the loom is stopped in con-
sequence.
:
And in order that my said Invention and the manner of performing the
same may be properly understood, I have hereunto appended a Sheet of
explanatory Drawings, to be herein-after referred to, and representing as much
of a loom fitted with my improvements as appears to be necessary for their
application being understood.
Figure 1 is a side elevation; Figure 2 is a front elevation; and Figure 3
is a plan showing the improvements.
In this modification the weft fork 1 is mounted in the usual way upon a
rod 2, which is fixed upon and projects inwards from the inner end of a lever 3
jointed at its outer end on the catch plate 4, which forms a continuation of
the breast beam 5. The lever 3 jointed on the catch plate 4 works hori-
zontally on that plate, and lies against that part of the belt lever 6 which
projects through the plate. The lever 3 also lies against a small vertical
lever 7 projecting up through the plate 4, and fixed on a spindle 8 which
passes through the side frame 9. Inside the frame 9 the spindle 8 has fixed
on it the retaining catch 10 of the take-up ratchet wheel 11, these two parts

page_text: being indicated by dotted lines in Figure 1; or the retaining catch might
be separate, an arm being fitted on the spindle to act on it. With this
arrangement when a weft thread breaks, and the weft fork lever 3 is in con-
sequence moved forward by the usual action, this lever both throws off the
belt lever 6 and moves forward the lever 7, whereby the catch 10 is taken
out of gear. The return of the catch is prevented until the loom is again.
started by a hook or catch 12 fixed on the belt lever 6 in such a way that
when the belt lever 6 springs inwards into the position for stopping the loom,
in which position it is represented in the Figures, the weft fork lever 3 and
with it the catch lever 7 are caught and held in the forward position into
which they were moved by the weft stopper action, and cannot return until
the belt lever 6 is moved outwards to start the loom. The moving of the
belt lever outwards and backwards into its holding notch on re-starting the
loom sets all the parts of the motion back into their working positions, and
the take-up is resumed. The hook 12 engages with a catch-piece 13 fixed
on the weft fork lever 3, and so shaped that the hook 12 can pass in front of
it when it is in its back position, in consequence of which arrangement the
belt lever can be at any time thrown off without. interfering with the weft
fork lever 8 or with the catch lever 7. If the weft fails when the shuttle is
on its passage towards the side having the fork, in looms with one fork, the
take-up requires no attention nor adjustment on re-starting, but if the weft
fails when the shuttle is on its passage from that side the take-up motion will
continue for one pick too much, as the stopping motion will not act until the
shuttle returns to the weft fork side, but this may be prevented or corrected
by the attendant holding forward the catch lever 7 for one stroke or pick on
re-starting. Looms with two weft forks require no adjustment in either case.
In order that the loose reed movement may act on the take-up in the same
way as the weft fork movement, the rocking spindle 14, which by the arms 15
carries the holding-up bar 16 (indicated by dotted lines in Figure 1) at the
back of the reed, has fixed on it a spear or catch point 17, which in ordinary
working passes under the bottom of a catch-piece 18, conveniently formed in
one piece with the catch-piece 13, and fixed on the weft fork lever 8, but
when the shuttle is caught in the shed, and the reed yields backwards on the
beat-up taking place, the front of the spear 17 is tilted up, and encountering
the catch-piece 18 moves forward the weft fork lever 3, and the belt lever 6
is thereby thrown off, and the take-up catch 10 is taken out of gear precisely
as in the case of the weft breaking. To those practically acquainted with
looms it will be obvious that the details may be easily modified to suit
the various arrangements of weft fork and take-up details, and that the

page_text: propelling catch of the take-up motion may be acted upon instead of the
holding catch.
Having thus particularly described my said Invention, and the manner
in which the same is or may be performed, I have to state that I do not
restrict myself to the precise details herein described or delineated, but
that what I believe to be novel and original, and claim as the Invention
secured to me by the herein-before in part recited Letters Patent is, the
arranging of the holding or propelling catch of the take-up ratchet wheel
of a loom in connection with the parts acted on by the weft fork or loose
reed, so as to prevent the continuance of the take-up after the belt lever is
thrown off, substantially as herein-before described.
In witness whereof, I, the said David Dalglish, have hereunto set my
hand and seal, this Fifteenth day of September, in the year of our Lord
One thousand eight hundred and sixty-four.
Witness,
EDMUND HUNT,
Patent Agent,
28, St. Enoch Square,
Glasgow.
DAVID DALGLISH. (L.B.)