IMPROVEMENTS IN LOOMS.
Year: 1853

page_text: LETTERS PATENT to John Walmsley, of Accrington, in the County
of Lancaster, Manufacturer, and John Ingham, of Blackburn, in
the same County, Mechanic, for the Invention of "IMPROVEMENTS
IN LOOMS.
Sealed the 9th May 1854, and dated the 28th November 1853.
PROVISIONAL SPECIFICATION left by the said John Walmsley
and John Ingham at the Office of the Commissioners of Patents,
with their Petition, on the 28th November 1853.
We, JOHN WALMSLEY and JOHN INGUAM, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN Looms" to be as
follows:-
Instead of the usual stop motion for the loom we fix a projection to
the boss of the fly wheel, which coming in contact with the lever com-
municates motion to another lever which acts upon the stop handle
when necessary and stops the loom. This motion is remarkably simple
and fully shewn in the accompanying Sketch or outline Drawing.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Walmsley and John Ingham in the Great
Seal Patent Office on the 26th May 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we,
JOHN WALMSLEY, of Accrington, in the County of Lancaster, Manu-
facturer, and JOHN INGHAM, of Blackburn, in the same County,
Mechanic, send greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent, bearing date the Twenty-eighth day of November,
in the year of our Lord One thousand eight hundred and fifty-three, in
the seventeenth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto us, the said John Walmsley and Jolin
Inghan, Her special licence that we, the said John Walmsley and
John Ingham, our executors, administrators, and assigns, or such others
as we, the said John Walmsley and John Ingham, our 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 "IMPROVEMENTS
IN LOOMS," upon the condition (amongst others) that we, the said John
Walmsley and John Ingham, by an instrument in writing under our
hands and seals, or under the hand and seal of one of us, should par-
ticularly describe and ascertain the nature of the said 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 Royal Letters Patent.
NOW KNOW YE, that I, the said John Walmsley, 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):-
6
Our Invention relates to improvements in that part of a power loom
generally called the stop motion, that is, a self-acting apparatus by
which the loom stops or ceases to act when the shuttle stops in the

page_text: shed, or what is technically called misses boxing, and consists of fixing
a finger or projection to the boss of the fly wheel so as to come in con-
tact with a lever or levers which act upon the stop handle. This our
Invention will be clearly understood by reference to the accompanying
Sheet of Drawings, in which the same letters of reference are used to
represent similar parts where different views or diagrams are shewn.
Fig. 1 is a front elevation of part of a loom shewing our improve-
ments; Figs. 2 and 3 are end views of the same; and Fig. 4 is a plan
thereof. a, represents the frame; b, the crank shaft; c, the slay or
lathe; d, the stop handle; e, e, the shuttle boxes. Upon the slay are
the pins or fulcrums g, g, upon which. turn the bent levers h, h, having
one of their ends furnished with a swell which enters its corresponding
shuttle box, and the other resting upon a plate or surface i, i, placed at
cach end of the loom, and. fastened by means of set screws to the other
levers k, k, which are fixed to the rod 7, turning in bearings on the end
frames of the loom. At the end of the loom where the handle d.is
placed, the lever k has an additional arm, the end of which at m,
presses against the short arm n, of a double lever, whose long arm o, is
furnished with a hook or catch at p; this double lever works upon a
fulcrum 9, attached to the break 1, and can be acted upon by a strong
spring s; on the crank shaft.is fixed a boss t, with a projection or hook.
To the break is attached a rod u, with its end turned up and resting
upon an angular knob b, fixed to the handle d. It is evident that when
the shuttle is in the box it presses against the swell of the lever h, as
seen in Fig. 3, its opposite end resting upon the plate or surface i, and
presses the lever k, pushing its other end against the short arm it, and
forcing it with the long arm outwards, overcoming the resistance of
the spring s, and placing the hook or catch p out of reach of the
hook or projection on the boss t, consequently when the shuttle boxes
work regularly no stoppage will occur, but when the shuttle is lodged
in one of the boxes, the swell of the lever h enters the box at the oppo-
site end of the slay, or if the shuttle is lodged in the shed or warp,
then both swells enter the shuttle boxes by means of the spring a, thus
taking off all pressure from the short arm n, and the long arm o, which
is then pressed forward by its spring s, allowing its hook or catch p, to

page_text: be in the way of the hook or projection on the boss t, which in its
revolution becomes locked in the hook p, and forcibly prevent the
revolution of the crank shaft b, at the same time raising the break
against the periphery of the fly wheel, shewn by the dotted circle j, also
at the same instant the end of rod u is pressed against the angular
knob v, forcing the handle d out of its detent, thus changing the strap
from the fast to the loose pully. This combination causes an instan-
taneous stoppage of the loom without straining the working parts of it.
The angular knob v also keeps the break from touching the fly wheel,
the rod u, being furnished with an adjustable screw w.
Having thus fully described the nature and particulars of our said
Invention, I desire it to be distinctly understood that we do not confine
ourselves to the exact details herein set forth, as such may be varied or
modified without departing from the principle thereof; but we claim
the mode or method of stopping the loom when the weft thread breaks
or the shuttle misses boxing, as herein described and illustrated in the
accompanying Sheet of Drawings.
In witness whereof, I, the said John Walmsley, have hereunto
set my hand and seal, this Twenty-third day of May, One
thousand eight hundred and fifty-four.
JOHN WALMSLEY. (L.S.)
Signed, sealed, and delivered by the
within-named John Walmsley in
the presence of
E. J. HUGHES,
Patent Agent,
Manchester.