IMPROVEMENTS IN Looms FOR WEAVING
Year: 1875

page_text: LETTERS PATENT to William Shorrock, of Preston, in the County of
Lancaster, Overlooker, for the Invention of " IMPROVEMENTS IN Looms
FOR WEAVING."
Sealed the 16th October 1875, and dated the 29th May 1875.
PROVISIONAL SPECIFICATION left by the said William Shorrock at
the Office of the Commissioners of Patents, with his Petition, on
the 29th May 1875.
I, WILLIAM SHORROCK, of Preston, in the County of Lancaster,
Overlooker, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN LOOMS FOR WEAVING," to be as follows:-
My Invention relates to improvements in looms designed for weaving
figured borders and stave work; such said Invention is an arrangement of
dobbies, and consists of a slide box which rests upon a stay in the centre
of the loom about 3 feet above the loom top. This said stay rests on
In front
the frame, and leans forward a little out of perpendicular line.
are two small cross bars to keep in slide box a number of slides. In
front of this slide box I fix a small lagg barrel of the usual construc-

page_text: tion, excepting that in the laggs used by me there is but one row of
pegs instead of two. The ordinary spaced wheel and ratchet are used at
cach end of barrel shaft.
The before-mentioned slides working in slide box have at the top end
in front a hook, and at a proper distance below a projection. The lower
half at the back of such slide is cut away, leaving a heel to rest upon a
bar provided in the back of the slide box. At the bottom I fix a hook
to attach the harness or staves to; these slides are worked by a knifo
attached to the top end of a side slide bar. The lagg barrel is worked
by a spring catch into the ratchet wheel from this said side slide bar.
To the bottom end of this side slide bar is attached a rack, into which
works an ordinary rack wheel, which rack wheel works on the heel roller
or any other convenient part of the loom.
When the heel roller makes a turn it lifts by means of tho rack
attached the side slide bar, which enables the knife to lift the slides by
the hook at top. The spring catch on the same bar on the return
motion of heel roller is brought down and comes in contact with one
tooth of catch wheel or roller shaft, thus moving round one section of
pegs, which pegs coming in contact with the projections in front of
slides prevents such of the hooks as designed by pattern from catching
the knife on its next motion. The front of slide box being out of
perpendicular line causes the slides to lean forward until touched by the
pegs.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Shorrock in the Great Seal Patent Office 80
on the 29th November 1875.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-ninth day of May, in the year
of our Lord One thousand eight hundred and seventy-five, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said William Shorrock, Her special licence
that I, the said William Shorrock, my executors, administrators, and
assigns, or such others as I, the said William Shorrock, 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 "IMPROVEMENTS IN LOOMS
FOR WEAVING," upon the condition (amongst others) that I, the
said William Shorrock, my executors or administrators, by an instru-
ment 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 be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Lotters
Patent.
NOW KNOW YE, that I, the said William Shorrock, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement and the accompanying Drawings, the several Figures
of which are marked by corresponding letters of reference :-
--
Figure 1 is a side elevation of my Invention, the dotted lines indicating
the several parts behind when at work, and the extreme lift of the slide
or jacks; Figure 2 is a similar view of slide or jack; Figure 3 is a side
and end view of swivel knife and spring.
Al in Fig. 1 is a slide box fixed to a stay or its equivalent in its
proper position near or in the centre of the loom, leaning forward a
little out of perpendicular; B is a side slide bar; C, C, a side frame
secured to slide box by screw a; D, D, is a crutch for carrying stretcher
roller M to carry chain of laggs; E is a slide side lever; F, F, are slide
or jacks; G is a swivel knife with neck P at each end, which work in
provisions made in an inside slide box formed by side slide bar B, and
an opposite one made shorter connected by a front bar, serving the

page_text: further purpose of keeping the slide or jacks in their proper places; H
is a lagg barrel of the usual construction; I, the ordinary ratchet wheel;
J, catch finger for same; K, a sliding fulcrum for catch finger, in the
which such finger may be regulated; L, are laggs ordinarily used, but
instead of having two rows I use one row of pegs; M is a stretcher or
carrying roller; N, slide or jack pegs; Q, the ordinary spaced or star
wheel (shewn dotted); R, the ordinary spring; S is a spring secured to
the knife for the purpose of carrying the edge of such knife inward
when it falls down, so that may be sure to catch the forward slide or
jacks for lifting as next motion up, and yet prevent it from breaking
the pegs N; T is a pivot working freely in slott Y, by which the lever E
is worked; this pivot is secured into the upper end of inner frame
carrying knife, of which side slide bar B forms a part; U is a strap of
leather or other equivalent, to which is secured wire V, with hook;
and c¹ are grates fixed so and in order to keep the slides or jacks
apart.
Fig. 2 is a slide or jack, which when required for stave work is as
shown, but when for figured borders the small hook W is removed, and
the strap and hook substituted, as shown in Fig. 1.
Having described my Invention and its several parts in detail I will
now proceed to describe its action and effects. Action is obtained from
the slotted end of slide bar B at z, which forms the outer side of inner
slide box which carrys the knife at the top. It will be seen by reference
to Figure 1, by the dotted lines of slides or jacks F, that there is room
for them to come forward. As the lagg barrel brings round a fresh lagg
with the peg N (also shown dotted) striking slide or jack forward at
the fall motion of the side slide bar B, bringing down with it the slotted
lever E, and with it the catch finger J acting on catch wheel I, it brings
down whichever peg N may be opposite any particular slide or jack,
pushing it forward ready for the next upper motion of side slide bar B,
which by its knife at top takes up with it any particular slide or jack
forced forward by any particular peg N required to make the required
shed, as shown by dotted lines in Figure 1. The next downward motion
of slide bar B brings with it the lever E, catch finger J into catch
wheel L, again forces catch wheel lagg barrel, and consequently next
lagg forward, liberates the last used slides or jacks, forcing forward others
to be dealt with in like manner. I use any number of slide or jacks
the figure or pattern desired may require.

page_text: For stave work I substitute the slide or jack as shown in Fig. 3 for
that shown in Fig. 1, which is the same in all respects except the
harness at bottom. For stave work the simple hook W is required, and
for border the strap and wire U and V.
Having now described the several parts of my Invention, and the way
it is worked, I desire it to be distinctly understood that I do not confine
myself to the precise details I have had occasion to refer to, as many
variations may be made in detail without deviating from the main
features or principle of my Invention, but what I claim as secured to
me herein is,
First. Frame A, with slide frame B and parts attached, substantialy
as and for the purposes herein-before set forth.
Second. The slides or jacks F, substantialy as and for the purposes
herein-before set forth.
Third. The side slide lever E, swivel knife G, spring S, and stud T,
substantialy as and for the purposes hercin-before set forth.
Fourth and last. The general arrangement and combination of the
several parts named, substantialy as and for the purposes herein-before
set forth.
In witness whercof, I, the said William Shorrock, have hereunto
set my hand and seal, this Twenty-first day of November, in
the year of our Lord One thousand eight hundred and seventy-
five.
5 Witness,
JOHN LEWIS,
Engineer & Patent Agent,
Preston,
Lancashire.
WILLIAM SHORROCK. (L.s.)