IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1866

page_text: LETTERS.PATENT to William Robert Lake, of the "International Patent
Office," No. 8, Southampton Buildings, Chancery Lane, in the County of
Middlesex, Consulting Engineer, for the Invention of "IMPROVEMENTS IN
LOOMS FOR WEAVING."-A, communication from abroad by George
Crompton, of Worcester, Massachusetts, United States of America.
COMPLETE SPECIFICATION filed by the said William Robert Lake at the,
Office of the Commissioners of Patents, with his Petition and Declaration,
on the 15th November 1866, pursuant to the 9th Section of the Patent
Law Amendment Act, 1852..
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT. LAKE, of the "International Patent: Office," No. 8, Southampton:
Buildings, Chancery Lane, in the County of Middlesex, 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, my
executors, administrators, and assigns, Her Royal Letters Patent for the.
same, and have made solemn Declaration that it has been communicated to me
from abroad by George Crompton, of Worcester, 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 Drawings:-

page_text: in alternately opposite directions is imparted to the curved arms and the
clamp bars l, m, as will be readily understood from Figure 5. The separation
of the bars allows the heddle levers to move in opposite directions with respect
to each other as may be required to raise and lower the harness frames and
perfect the shed, but their movement towards each other always brings all the
levers into line. Through each heddle lever and just below or opposite to the
clamp bars is a mortise t, in which is hung a double latch having hooks u and v
at its opposite ends, as seen in Figure 5. Each latch plays freely in its mortise,
but is held normally by gravity with the hook u latched over-the outer side
of the bar 7, as seen in said Figure; the heddle levers being thus all secured
normally to this bar, and moving with it unless unlatched therefrom. When
unlatched- therefrom the hook upon the opposite end of any lever catches
over the outer edge of the bar m, securing the lever to such bar, and causing
it to move with it. A projecting finger v¹ from each latch passes through a
mortise in a lever w hung on a shaft x, mounted in bearings y, supported on the
brackets c, as seen in Figure 5., Between the shaft and the latch each lever w
rests upon the pattern cylinder a, the pins of which as the cylinder rotates lift the
levers w, and thereby operate the latches. When the heddle levers are in line,
as seen in Figures 1 and 5, the shed is closed, and the levers are all hooked
or fastened by the gravity of the latches to the bar ?. If in the next oscillation
of the two-armed lever the bar and heddle levers retain their relative position
they would move together, and no shed be formed; but before such move-
ment of the rocker lever the pattern cylinder is turned, and the upper pins
in line lift the levers w, disengaging the hooks of the particular latches with
which they are connected from the bar 7, and engaging the hooks at the
opposite ends of such latches with the bar m. When the rocker lever then
turns each heddle lever moves with the particular bar with which it is latched,
effecting the depression or elevation of the harness frame to which it is con-
rected (accordingly as it may move in one or the opposite direction), and
thus perfecting the shed, the outer edges of the bars and m thus acting as
depressors and lifters in perfecting the shed, and as eveners to bring the
heddle levers all into a common vertical line for each new distribution of the.
latches or hooks by the cylinder. When the shed is closed the cylinder or
chain is moved by a catch wheel 62 and catch c¹ through the means of the
connecting rod d¹ and excentric e¹ on the shaft s; the wheel f¹ has depressions
in which rest the roller in lever 9', to which a spring h¹ is attached and secured
at i¹ to check its motion, and hold it in place during the intermission of motion,
at which time the rows of projections uppermost distribute the hooks to form
the shed, each row of pius varying the pattern as required, as is usual in

page_text: looms of this class. The pins in the cylinder or chain being screwed into the
lág, they in practise occasionally become loose or unscrewed, and projecting
too far from the cylinder (the distance to which the levers w can be raised
being fixed) they break off; to remedy this the bearings of the shaft upon
which the levers ware hung are held down by springs, as seen in Figure 7
at A, which denotes a section of the shaft, and the levers w. (B, Figure 7,
showing the same in elevation), each bearing having a shank extending down
into a box k', and through the spring which presses at one end against a nut
on the shank, and at the other end against the box. A shoulder on the
bearing rests upon the top of the box, and is held there normally by the spring.
When any pin projects too far from the cylinder it lifts the lever w until the
latch strikes the bar m, and then elevates the lever shaft, the spring allowing
the bearings to rise, and returning them to their normal position as seen as
the pin passes. One side of each metal. loop ds which connects, the wire to
the top or bottom of each heddle lever sets in one of a series of contiguous
notches in the-lever, and the opposite side of the loop is made with a horn or
projection 7,-as-seen in Figure 5, and also in Figure 6, in which latter Figure
A, B, and C, denote respectively a side view, a plan, and a section of one of
these loops. When the loops and wires are in position the point of each horn
is in such proximity to the inner side of the lever as to prevent the loop from
slipping from its notch, while by tipping the loop it is easily slipped from the
lever or from one notch into another.
Having thus fully described the said improvements as communicated to me
by my foreign correspondent, I do not confine myself to the exact details
described; but I claim the Invention substantially as herein set forth and
illustrated in the accompanying Drawings.
.
In witness whereof, I, the said William Robert Lake, have hereunto set
my hand and seal, this Fifteenth day of November, in the year of our
Lord One thousand eight hundred and sixty-six.
Witness,
WILLIAM ROBERT LAKE. (L.S.)
GEORGE HASELTINE,
8, Southampton Buildings,
London, W.C.