CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING."
Year: 1856

page_text: of Lancaster, Overlooker, for the Invention of "CERTAIN IMPROVEMENTS IN
LOOMS FOR WEAVING."
PROVISIONAL SPECIFICATION left by the said Samuel Berrisford and
Enoch Wilkinson at the Office of the Conimissioners of Patents, with
their Petition, on the 23rd May 1856.
.
We, SAMUEL BERRISFORD, of Portwood, near Stockport, in the County of
Chester, and ЕNOCH WILKINSON; of Oldham, in the County of Lancaster,
Overlooker, do hereby declare the nature of the said Invention for "CERTAIN
IMPROVEMENTS IN LOOMS FOR WEAVING," to be as follows:-
This Invention is applicable to looms in which two or more shuttles are
employed, and consists in an improved combination of parts for changing the
position of the drop box, so as to bring the shuttles in any required succession
in a line with the shuttle race. The drop box is connected in the usual
manner to a lever, which is acted upon to raise or lower the drop-box by
tappets attached to intermittent wheels, and these wheels are moved partly
round by a wheel actuated from the crank shaft, or other convenient part of

page_text: the loom. The order of succession in which the shuttles are brought to the
line of the shuttle race is governed by a chain of tappets acting on levers and
studs, which latter pass through a revolving cylinder or cam, and come in a
line when required with the notches in the intermittent wheels.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Samuel Berrisford and Enoch Wilkinson in the Great Seal
Patent Office on the 22nd November 1856.
TO ALL TO. WHOM THESE PRESENTS SHALL COME, we, SAMUEL
BERRISFORD, of Portwood, near Stockport, in the County of Chester, and ENOCH
WILKINSON, of Oldham, in the County of Lancaster, Overlooker, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of May, in the year of our Lord
One thousand eight hundred and fifty-six, in the nineteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said Samuel Berrisford and Enoch Wilkinson, Her special license that we,
the said Samuel Berrisford and Enoch Wilkinson, our executors, administra-
tors, and assigns, or such others as we, the said Samuel Berrisford and Enoch
Wilkinson, 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 CERTAIN IMPROVEMENTS IN
LOOMS FOR WEAVING, upon the condition (amongst others) that we, the said
Samuel Berrisford and Enoch Wilkinson, our executors or administrators, by
an instrument in writing under our, or their, or one of our or 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 Letters Patent.
NOW KNOW YE, that we, the said Samuel Berrisford and Enoch Wilkinson,
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 (that is to say):-
Our Invention is applicable to those looms in which two or more shuttles are
employed, and consists in an improved combination of parts for changing the

page_text: And in
position of the drop box containing the shuttles, for the purpose of bringing
the shuttles in any required succession in a line with the shuttle race.
order that our Invention may be fully understood, and readily carried into
effect, we will proceed to describe the means pursued by us, reference being
had to the accompanying Drawings, and to the figures and letters marked
thereon.
To
Fig. 1 is an end elevation of a loom with three shuttles to which our
improvements are applied, and Fig. 2 is a front view of part of the same.
a is the crank shaft; b,. the lay bottom; 6', the lay sword; 62, the fulcrum shaft
of the lay; &, the drop box, with three compartments for the shuttles; c, the
top lever by which the drop box is raised and lowered; c', the link connecting
the top lever c with the bottom lever d, which is connected to the drop box by
the rod d. The foregoing parts, and all the others not particularly referred to
hereafter requisite to complete the loom, are made in the usual manner.
the crank shaft a is keyed the pinion a', gearing into the wheel e, which has
twice as many teeth as the pinion a', and consequently revolves at half the
velocity. To the wheel e is cast or otherwise attached the cylinder or cam è¹,
which is made with a recess e; the two studs f pass through the cylinder or
cam e, and each stud is furnished with a spring coiled around it for holding
the heads of the studs within the recess e. The wheel e, and the parts con-
nected to it, revolve upon the stud e', fixed to the loom side; above this stud
is the stud g, on which revolve the intermittent wheels g¹ and 9 and the
cams g³ and g', the cam g³ being fast to the boss of the intermittent wheel g',
and the intermittent wheel g with the cam g', being fast together, but loose
on the boss of the intermittent wheel g¹; the cams 93 and 9' act alternately, or,
when required, on the bowl c³, mounted on a stud fixed in the top lever c. The
wheele has à pin projecting from it for giving motion to the intermittent
wheel h, to which is attached the barrel h¹ for the tappet chain h; the links
of this chain act on the bent levers, i, the object of which will be explained
hereafter. The elbow levers-j take into the notches of the intermittent
wheels gl and g, and are for the purpose of retaining these wheels in their
proper positions while the recess e passes under them; the levers are drawn
down by the springs, or by weights.
The mode of operation is as follows:-The Drawing represents the various
parts in the positions they respectively occupy when the lowest compartment
of the drop box is in a line with the shuttle race, the lever c being held up by
the cam g. As long as the shuttle of the lowest compartment is required, the
low links of the chain h² pass without acting on either of the levers i; but when
a change in the position of the shuttles is required, one of the higher links of

page_text: the chain elevates one of the bent levers i, and the cylinder or cam e¹ in
revolving brings one of the studs fin contact with the lever i thus elevated;
by this means the tail end of the stud f is acted on by the bent lever i, and
the head of the stud is made to project beyond the recess e, as shown detached
in Fig. 3; this head, by taking into the notch of the intermittent wheel g',
moves it round a sixth part of a revolution, thereby removing the high portion
of the cam g' from under the bowl c, and allowing the lever c to drop. If the
shuttle in the middle compartment of the drop box is required to be in a line
with the shuttle race, the bowl c then drops on the cam g'; but if the shuttle
in the uppermost compartment is required, both the levers i must be raised by
two high links of the chain h², to cause both the intermittent wheels g¹ and g
to be moved simultaneously, by which means the bowl will drop in the space
between the elevations of the cams go and g. It is evident that by altering
the relative positions of the higher and lower links in the chain h³ the drop
box may be raised and lowered, so as to bring the shuttles to the level of the
shuttle race in any required succession. The Drawing above described shows
the combination of parts for a loom in which three shuttles are employed; if
only two shuttles are required; one of the intermittent wheels g¹ or g², with the
parts acting in combination therewith, may be dispensed with; and when four
or more shuttles are required, the number of intermittent wheels, and parts
acting in combination therewith, must be increased in proportion.
Having thus described the nature of our Invention, and the manner of
performing the same, we wish to remark that we make no claim to the mode
shewn and described of connecting the cams 93 and 9 with the intermittent
wheels g' and g³, as the same has before been used; but what we do claim is,
the cylinder or cam e', with the parts acting in combination therewith, and the
levers i and j, for giving motion to the cams g and g', when applied in the
amanner and for the purposes described.
"
"
In witness whereof, we, the said Samuel Berrisford and Enoch Wilkinson,
have hereunto set our hands. and seals, this Twenty-first day of t
November, in the year of our Lord One thousand eight hundred and