IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1867

page_text: LETTERS PATENT to William Dickinson (of the Firm of William Dickinson
and Sons) of Blackburn, in the County of Lancaster, Cotton Manu-
facturers and Machinists, for the Invention of "IMPROVEMENTS IN LOOMS
FOR WEAVING."
Sealed the 20th August 1867, in pursuance of an Order of the Lord
Chancellor, and dated the 29th January 1867.
FROVISIONAL SPECIFICATION left by the said William Dickinson at the
Office of the Commissioners of Patents, with his Petition, on the 29th
January 1867.
I, WILLIAM DICKINSON (of the Firm of William Dickinson and Sons), of
Blackburn, in the County of Lancaster, Cotton Manufacturers and Machinists,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
LOOMS FOR WEAVING," to be as follows:-
This Invention consists, firstly, of a means of and apparatus for obtaining a
vibrating or oscillating motion to the "back bearer" or beam over and on
which the warp passes in its passage from the warp beam to the healds so as
to relieve the warp and healds from unnecessary strain or friction. Secondly,
in dispensing with the weights and levers employed for weighting the warp
beam, which effect as follows:-Supported on a stud fixed to each side
frame of the loom is a rocking lever, the stud acting as a fulcrum. The ends
of the said levers nearest the healds carry the back bearer; to the other ends
of the said levers is attached a cord or rope to serve as an ordinary weight rope,

page_text: and is passed over a pulley carried on a stud fixed to the frame side and around
the neck of the warp beam as usual. In the length of rope between the ends
of the levers and the pullies is a spiral spring, which as the warp is drawn from
the beam admits the desired vibration or motion of the back bearer, and con-
sequent freedom from unnecessary strain and friction on the warp and healds;
(or instead of the spiral springs applied as above described a bow spring may
be placed under the end of the said levers nearest the healds), whilst the lever
and rope applied as above described to the warp beam obviate the necessity of
the ordinary weight and lever; or 1 dispense with the weights and obtain the
desired motion of the levers and back bearer by "swinging" the warp beam
in the weight rope and bearings, one end of such ropes being attached to a
stud on each side frame of the loom, the said rope 'from the stud last-men-
tioned being passed around the neck of the warp beam and attached to the
end of a rocking lever on each side of the loom with spiral spring as above
described. As the warp beam decreases in diameter the consequent loss of
weight (required to maintain the proper degree of tension of the yarn) is
compensated by the decrease of the angle at which the yarn leaves the beam.
SPECIFICATION filed in pursuance of the conditions of the Letters Patent,
and of an Order of the Lord Chancellor, by the said William Dickinson
in the Great Seal Patent Office on the 29th August 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
DICKINSON (of the Firm of William Dickinson and Sons), of Blackburn, in
the County of Lancaster, Cotton Manufacturer and Machinist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-ninth day of January, in the year of our
Lord One thousand eight hundred and sixty-seven, in the thirtieth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said William Dickinson, Her special licence that I, the said William
Dickinson, my executors, administrators, and assigns, or such others as I,
the said William Dickinson, 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 "IMPROVE-
MENTS IN LOOMS FOR WEAVING," upon the condition (amongst others) that I,
the said William Dickinson, my executors or administrators, by au instru-

page_text: ment in writing under my, or their, or one of their hands and scals, 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 seven calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Dickinson, 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 tho
following statement :-
a
This Invention consists of a means of and apparatus for obtaining
vibrating or oscillating motion to the "back, bearer" or beam over and on
which the warp passes in its passage from the warp beam to the healds so as
to relieve the warp and healds from unnecessary strain or friction, and for
dispensing with the weights and levers employed for weighting the warp beam,
which I effect as follows:-Supported on a stud fixed to each side frame of the
loom is a rocking lever, the stud acting as fulcrum; the ends of the said levers
nearest the healds carry the back bearer; to the other ends of the said levers is
attached a cord or rope to serve as an ordinary weight rope, and is passed
over a pully carried on a stud fixed to the frame side or cross rail and around
the neck of the warp beam as usual. In the length of rope between the ends
of the levers and the pullies is a spiral spring, which as the warp is drawn
from the beam admits the desired vibration or motion of the "back bearer,"
and consequent freedom from unnecessary strain and friction on the warp and
healds; or instead of the spiral spring applied as above described a blade
spring may be placed at the ends of the levers nearest the healds, whilst the
lever and rope applied as above described to the warp beam obviate the
necessity of the ordinary weights and levers; or I dispense with the weights
and obtain the desired motion of the levers and back bearer by "swinging"
the warp beam in the weight rope and bearings, one end of such ropes being
attached to a stud on each side frame of the loom, the said rope from the stud
last mentioned being passed around the neck of the warp beam and attached
to the end of a rocking lever on each side of the loom with spiral spring. As
the warp beam decreases in diameter the consequent loss of weight (required
to maintain the tension of the yarn) is compensated by the decrease of the
angle at which the yarn leaves the beam.
Such being the nature and object of this my said Invention, I will now
proceed to describe the same more fully; and in order that the same may be
distinctly understood I have hereunto annexed a Sheet of Drawings, and have
marked the same with figures and letters of reference.

page_text: Fig. 1 is a view of loom with my improvements attached. A is side frame
of loom; B, warp beam, the warp from which passes over and is supported by
back bearer C; the ends of the back bearer are secured by bolts D to the
levers E, E; to the other end of the said levers is attached by means of the
hooks e, e, the ropes F, F; these ropes are passed over the pulleys G, G,
on the studs H, H, and around the necks of the warp beam, as shewn at h,
the ends of the ropes being secured to the side frame or cross rail of the loom,
as shewn at I; the levers E, E, work on studs J, J, attached to the casting
K, K, and to the side frames of the loom. In the length of rope between the
ends of the levers E, E, a spiral spring may be applied, as shewn at Fig. 2,
and a blade or spiral spring may be applied under end of levers E, E, nearest
the healds, as shewn at L, L. At Fig. 3 is shewn warp beam "swinging
or slung in weight rope, and attached to levers E, E, as above described;
Figs. 4 and 5 are detail views of lever E and stud H.
Having thus fully described the nature and particulars of this my said
Invention, together with the manner in which the same is to be or may be
performed or carried into practical effect, I would have it distinctly understood
that I claim as my Invention "the arrangement and combination of the appa-
ratus for obtaining vibration of the back bearer for the purpose of relieving
the warp from unnecessary strain or friction and for dispensing with the warp
beam weights and levers, as shewn in the Drawings and herein fully described,
or any mere modification thereof.
In witness whereof, I, the said William Dickinson, bave hereunto set my
hand and seal, the Twenty-seventh day of August, in the year of
our Lord One thousand eight hundred and sixty-seven.
Witness,
ASHTEN P. DICKINSON,
Blackburn.
W. DICKINSON. (L.S.)