IMPROVEMENTS IN LOOMS FOR WEAVING.
Year: 1870

page_text: LETTERS PATENT to William Robert Lake, of the "International
Patent Office," Southampton Buildings, London, Consulting En-
gineer, for the Invention of "IMPROVEMENTS IN LOOMS FOR WEAVING.”.
A communication from abroad by James Brierly, of Millbury,
Massachusetts, United States of America.
Sealed the 24th June 1870, and dated the 14th April 1870.
COMPLETE SPECIFICATION filed by the said William Robert Lake at
the Office of the Commissioners of Patents, with his Petition and
Declaration, on the 14th April 1870, pursuant to the 9th Section
of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLLAM
ROBERT LAKE, of the "International Patent Office," Southampton
Buildings, London, Consulting Engineer, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS IN
LOOMS FOR WEAVING," and have petitioned Her Majesty to grant unto me,

page_text: my executors, administrators, and assigns, Her Royal Letters Patent for
the same, and have made solemn Declaration that it has been commu-
nicated to me from abroad by James Brierly, of Millbury, Massachusetts,
United States of America.
NOW KNOW YE, that I, the said William Robert Lake, do hereby
declare that the following Complete Specification, under my hand and
seal, fully describes and ascertains the nature of the said Invention,
and in what manner the same is to be performed, in and by the
following statement, reference being had to the accompanying-Drawing-
forming a part of this Specification:-
In looms wherein several shuttles are used it is desirable to be able to
throw any one of them without regard to rotation or regular order, except
as may be indicated by a pattern chain, and it is also an advantage to
have the loom stop itself if the shuttles are not in the boxes at either
end at the proper times, or, technically speaking, "to protect" at both
ends of the loom. These are the objects of my improvements, and I
accomplish them as follows:-
The shuttle boxes are constructed and arranged to slide up and down
in suitable framework, and are moved by means of a tumbling lever
connected to the rod supporting them, the lever being operated by a
graded connection, which moves it more or less according to the position
of the graded or stepped end of the connection, the grades or steps
varying the amount of motion the connection receives from a lever
moved by a cam, which position is governed by the pattern chain. The
boxes are retained in place by a stop lever acting on a circular part of
the tumbling lever, which part is notched to receive a projection on the
stop lever, the stop lever, being removed when the boxes are to be moved.
To allow the pattern chain to raise its levers to the different heights
required the chain is made with the rolls for each lever in as many
longitudinal rows as there are changes to make, and the faces of the
levers are stepped or bevelled, so that the rolls in the different rows lift
them the different degrees required.

page_text: provided with suitable levers to rest on the boxes, and each rod having
a protector to hit the cast-off lever somewhat similar to the common
form. Each rod has also a lever which passes over a roll or lever, which
is raised by a cam on the driving shaft when the shuttle is at the
opposite side, and then the roll and lever operate the protector; thus
the ends work alternately so as to protect if the shuttle is not in its
proper place at every beat of the loom, or, in other words, the cams and
levers relieve the protectors from acting when not needed.
The Drawing shews a side elevation of a loom constructed according
to this Invention. A, A, A, A, are the shuttlo boxes; B, the tumbling
lever; C, C', the two graded connections or operators; D, the levers to
be operated by the pattern chain at E; F is the stop lever; and G is a
rod connected to the said stop lever, with a handle G¹ to enable the
weaver to release it. The said rod has a catch H by which the lever i
releases it when either of the levers D is raised by the chain; and at J
a catch to take hold of a pin K until the boxes are moved. At L is
an incline for the stud N on the lever O to release catch J from the
pin K, and allow the spring M to bring the stop lever I into action.
O is a lever operated by the cam P, and having a pin R to move the
operators C, C', when they are raised by the chain; y, y', y", y¹¹¹, are
connections from the chain levers D to the operators and stop release,
each operator having its chain lever and acting with it; S is the pro-
tector with its lever T resting on the boxes, and its relieving end
operated by the roll V on the lever W, when the latter is raised by the
cam x, the other end of the loom having its protecting mechanism of
similar construction, and relieved by the cam a¹ operating alternately
with x; D' is a section of one of the levers D, and the diagram below it
shews the arrangement of the rolls to correspond with the steps or face
of the lever, the tines of the rolls being equal to the boxes to be changed,
less one.
I am aware that rolls of different sizes have been used to lift their
lever to different heights, but I use only one size of rolls, and vary their
lift by their position sideways in the chain in connection with the form
Fr

page_text: relieving them alternately, instead of "protecting" on both together as
is usually done in looms that "protect."
I
In witness whereof, I, the said William Robert Lake, have here-
unto set my hand and seal, this Thirteenth day of April; in the
year of our Lord One thousand eight hundred and seventy.
WILLIAM ROBERT LAKE. (L.S.)
Witness,
J. TEARE,
_ Clerk to Messrs. Haseltine, Lake, & Co.,
8, Southampton Buildings,
London.