IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1870

page_text: LETTERS PATENT to William Greaves, Cotton Mill Manager, and
Géorge Greenwood, Foreman Mechanic, both of Livesey, near
Blackburn, in the County of Lancaster, for the Invention of
"IMPROVEMENTS IN LOOMS FOR WEAVING."
Sealed the 24th January 1871, and dated the 13th October 1870.
PROVISIONAL SPECIFICATION left by the said William Greaves and
George Greenwood at the Office of the Commissioners of Patents,
with their Petition, on the 13th October 1870.
WOOD,
We, WILLIAM GREAVES, Cotton Mill Manager, and GEORGE GREEN-
Foreman Mechanic, both of Livesey, near Blackburn, in the
County of Lancaster, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN LOOMS FOR WEAVING," to be as follows:-
:―
This Invention relates to an improved arrangement and construction
of "break" or apparatus for arresting the motion of the loom when a
shuttle fails to box properly, or when from any cause the loom is to be
stopped.

page_text: "
We construct the break as follows:-The "break lever" is elongated
and works on a stud fixed near the back of the end frame of the loom;
the "shoe" or "trash " of the break is swivelled on a pin of the upright
arm of the break lever, and the said "shoe" by distribution of its weight
and by gravitation tends towards the fly wheel (to which it is applied).
An adjusting or set screw enables the loom "tackler to readily
determine the distance of the break from the wheel, and consequently
the lapse of time of its application after the stop handle is "knocked
off." The increased length of the break lever adds greatly to its power,
and breaks constructed as above described are efficient without break
lever weights.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Greaves and George Greenwood in the
Great Seal Patent Office on the 1st March 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
GREAVES, Cotton Mill Manager, and GEORGE GREENWOOD, Foreman
Mechanic, both of Livesey, near Blackburn, in the County of Lancaster,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirtieth day of October, in the year of
our Lord One thousand eight hundred and seventy, in the thirty-fourth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto us, the said William Greaves and George Greenwood, Her
special licence that we, the said William Greaves and George Green-
wood, our executors, administrators, and assigns, or such others as we,
the said William Greaves and George Greenwood, our executors, admi-
nistrators, 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 "IMPROVEMENTS IN LOOMS FOR
WEAVING," upon the condition (amongst others) that we, the said William
Greaves and George Greenwood, our executors or administrators, by an
instrument in writing under our, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said

page_text: Invention, and in what manner the same was to be 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 we, the said William Greaves and George
Greenwood, do hereby declare the nature of our said 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 relates to an improved arrangement and construction
of "break or apparatus for arresting the motion of the loom when the
weft breaks.
"
We construct the break as follows:-The break lever is elongated and
works on a stud fixed near the back of the end frame of the loom. The
shoe or "trash
of the break is swivelled on a pin fixed in an upright
arm of the break lever, and the said shoe or trash, by distribution
of weight and gravitation, tends towards the fly wheel to which,
the break is applied. An adjusting or set screw enables the loom
"tackler" to readily determine the distance of the break from the wheel,
and consequently the lapse of time of its application after the stop
handle is "knocked off." The increased length of the break lever
obtained adds greatly to its power, and breaks constructed as above
described are efficient with little or no break lever weights.
Such being the nature and object of this our said Invention we will
now proceed to describe the same in detail; and in order that the same
may be clearly understood we have hereunto annexed a Sheet of
Drawings, and have marked the same with figures and letters of reference,
the same letter referring to the same part in the various views.
At Figure 1 is shewn part of end frame of a loom having our
improvements attached; Figure 2, a detail or detached and enlarged
view of wheel and break; Figure 3, an end view or elevation of
Figure 2.
A, the break lever, elongated and working on the stud B, fixed near
the back of the end frame C of the loom D, the shoe or trash of the
break swivelled on the pin E of the upright arm F of the break lever A.
The "toe" (H) of the trash tends towards the wheel J. At K is shown
a "set" or adjusting screw, one end of which is received by the finger or
projection L on the boss M. The head of the screw K on being adjusted

page_text: bears on or against the heel H₁ of the trash, so as to remove the toc
thercof clear of the wheel J (see Figure 2). The "trash" is faced or
covered with leather, as ordinary.
"
It will be seen the set or adjusting screw enables the "tackler" or
loom attendant to so adjust the trash of the break that it only "clears
the wheel, that on the break lever being knocked off (which is effected
by the ordinary weft fork motion) the trash will instantaneously be
brought in contract with the fly wheel; and as the trash moves freely on
its swivel pin (as above described) the whole bearing surface of the trash
is self-adjusting to the wheel, weft being broken or exhausted, the
shuttle will box, and the loom's motion be arrested.
-
Having thus fully described the nature and particulars of this our
said Invention for "Improvements in Looms for Weaving," together
with the manner in which the same is to be or may be performed or
carried into practical effect, we would have it distinctly understood that
we claim as our Invention, the adjusting set screw K, together with the
construction of the upright arm and trash or break adjustable and
swivelled in the manner and for the purpose herein described and shewn
in the Drawing.
In witness whereof, we, the said William Greaves and George
Greenwood, have hereunto set our hands and seals, the Twenty-
third day of February, in the year of our Lord One thousand eight
hundred and seventy-one.
Witness,
WALTER BRIERLEY,
Patent Agent,
WILLIAM GREAVES.
(L.S.)
GEORGE GREENWOOD. (L.S.)
Halifax & Blackburn.