CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1861

page_text: LETTERS PATENT to Henry Bernoulli Barlow, of the City of Manchester,
Patent Agent, for the Invention of "CERTAIN IMPROVEMENTS IN LOOMS
FOR WEAVING."-A communication from abroad by Hyppolite Victor
Hermite, of Paris, in the Empire of France.
Sealed the 31st October 1861, and dated the 21st May 1861.
PROVISIONAL SPECIFICATION left by the said Henry Bernoulli Barlow
at the Office of the Commissioners of Patents, with his Petition, on
the 21st May 1861.
I, HENRY BERNOULLI BARLOW, of the City of Manchester, Patent Agent,
do hereby declare the nature of the said Invention for "CERTAIN IMPROVE-
MENTS IN LOOMS FOR WEAVING." a communication to me from abroad by
Hyppolite Victor Hermite, of Paris. in the Empire of France, to be as
follows:-
The object of this Invention is to arrest the motions of the loom when one
or more of the warp threads breaks; the mechanism for effecting this consists
of a series of plates mounted on two axles, each plate having a hole through
which a warp thread drawn; near these plates are feelers which have a
reciprocating or rotary motion imparted to them by the batten or other con-
venient part of the loom. When a warp thread breaks, the plate through
which it passed comes in contact with the feeler, which either brings a catch
[Price S1

page_text: into operation for arresting the motion of the batten, or moves the driving
strap from the fast to the loose pulley. or otherwise stops the loom. The
mechanism described may be considerably modified without departing from
the peculiar character of the Invention, which consists in an improved self-
acting combination of parts for stopping the loom when one or more of the
warp threads breaks.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Bernoulli Barlow, in the Great Seal Patent Office
on the 18th November 1861.
---
-TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
BERNOULLI BARLOW, of the City of Manchester, Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-first day of May, in the year of our Lord
One thousand eight hundred and sixty-one, in the twenty-fourth year of Her
reign, did, for Herself. Her heirs and successors, give and grant unto me, the
said Henry Bernoulli Barlow, Her special licence that I, the said Henry
Bernoulli Barlow, executors, administrators, and assigns, or such others as
I, the said Henry Bernoulli Barlow, 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 Islands, and Isle of Man, an Invention
for "CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING," a communication to
me from abroad by Hypolite Victor Hermite, of Paris, in the Empire of
France, upon the condition (amongst others) that I, the said Henry Bernoulli
Barlow, 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 be performed, and cause the same to he filed in the Great
Seal Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YB, that I, the said Henry Bernoulli Barlow, do hereby
declare the nature of the said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the
following statement (that is to say):-
The nature of this Invention consists in an improved self-acting combina-

page_text: tion of parts for arresting the motion of the loom when any one of the warp
threads breaks.
And in order that the same may be fully understood, and readily carried
into effect, will proceed to describe the accompanying Sheet of Drawings,
reference being had to the figures and letters marked thereon.
Figure 1 is a longitudinal section of part of a loom to which these improve-
ments are applied: Figure 2 is a detached view of part of the improved
machinery Figure 3 is a full-sized elevation of parts of the improved ma-
chinery Figures 4 and 5 are detached views of other parts of the improved
machinery.
a, a. are the warp threads passing through the eyelet holes of the healds b. b,
which are worked up and down as usual: c. c. are the ordinary lease rods; d.
the lay or batten; e. the roller for guiding the warp threads: f. the breast
beam, and g, g'. parts of the weft stop motion: all these parts. and the others
which are not shewn in the Drawing, or not particularly referred to hereafter.
but which are requisite to complete the loom, are made in any approved
manner. Each warp thread passes through one of the holes h in the plates i.
each of which is furnished with a slot for the rod to pass through: this
rod is supported at suitable intervals across the width of the loom by the
brackets. shewn best in Figures 4 and 5: these brackets are all screwed
to a cross beam fixed to the frame sides: as long as the warp threads remain
unbroken the plates i retain the position shewn by the full lines in Figures 1.
2. and 3. The mechanism for stopping the loom when a warp thread breaks
consists of the following parts:-m, m. are two T-shaped cross bars extending
the full width of the warp: these cross bars are hinged to the beam 1. and they
are made to vibrate on their centres by the straps n connected to one of the
healds and to the levers m' fixed to the cross bars m. The cross bars mare
connected by the segments m², see Figure 2. and by the springs m" which
draw them towards each other after they have been drawn asunder by the
ascending of the heald to which they are conneried. To one of the levers m'
is attached the lever a' jointed to one end of the link o. the other end of which
is jointed to the double lever p. whose fulcrum is at p': the lower end of the
lever pis hooked, and is situated above the ordinary weft fork g. The mode
of operation is as follows:-When a warp thread breaks, the plate i through
which it was threaded being no longer held up will drop into the position
indicated by the dotted lines in Figure 1 and 3, consequently one of the cross
bars m in vibrating will come in contact with the plate that has been
di-placed, and will be stopped by it. the levers m', n', link o, and lever p, will
thereby be arrested in the positions indicated by the full lines, and the weft

page_text: fork will not be able to rise when acted upon in the ordinary manner
by the weft) so as to be clear of the hook '; this hook in receding will
therefore act on the weft fork lever and move the driving strap from the
fast to the loose pulley, as in looms of the ordinary construction. As long
as the warp threads remain unbroken the parts above referred to are in
the positions indicated by the dotted lines at the time the weft fork is
raised by the action of the weft. The rod can be acted upon by hand so
as to raise the plates i that have dropped, and the ends of the broken warp
thread can be pieced up when the loom is at work; the rod i also serves to.
stretch the warp threads that are not broken; this action by hand of the rod j
is very important, as by it the warps can be relieved of the weight of the
plates i. I would also remark that cross bars similar to those marked m, m,
may be made to act-on-a-hinged catch connected to the starting lever to
stop the loom this hinged catch could be acted upon by the lay or batten, so
that when a warp thread breaks, the lay or batten would strike the hinged
catch and move the starting lever, so as to throw the driving strap from the
fast to the loose pulley. In hand looms also the catch is hinged to the frame
side, so that when the lay or batten strikes it the loom is stopped, this arrange-
ment possesses the advantage of acting at every stroke of the lay while the
other only acts through the weft fork and consequently comes into operation at
every two strokes of the lay.
Having thus stated the nature of the Invention, and described the manner
of performing the same, as communicated to me, I wish it to be understood
that do not intend to limit myself to the details given, as they may be
considerably varied or modified without departing from the peculiar character
of the Invention, but what I do claim is the arrangement and combination of
mechanism shewn and described for arresting the motion of a loom when a
warp thread breaks.
In witness whereof. I. the said Henry Bernoulli Barlow, have hereunto
set my hand and seal, this Sixteenth day of November, in the year
of our Lord One thousand eight hundred and sixty-one.
HENRY BERNOULLI BARLOW. (L.S.)