IMPROVEMENTS IN LOOMS FOR WEAVING."
Year: 1875

page_text: LETTERS PATENT to Christopher Catlow, Overlooker, and Thomas
Richmond, Cotton Manufacturer, both of Burnley, in the County
of Lancaster, for the Invention of "IMPROVEMENTS IN LOOMS FOR
WEAVING."
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Sealed the 2nd July 1875, and dated the 4th January 1875.
PROVISIONAL SPECIFICATION left by the said Christopher Catlow
and Thomas Richmond at the Office of the Commissioners of
Patents, with their Petition, on the 4th January 1875.
We, CHRISTOPHER CATLOW, Overlooker, and THOMAS RICHMOND,
Cotton Manufacturer, both of Burnley, in the County of Lancaster,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN LOOMS FOR WEAVING," to be as follows:-
This Invention has for its object,―
Firstly. An improvement in the means or apparatus employed for
"3
1

page_text: We secure to a boss fixed on the picking shaft an arm extending
outward from such boss, and at a suitable and relative angle to that of
the picking stick. A spiral or other spring is attached to the end of
the arm referred to by means of a hooked and curved connecting rod or
link, and to the frame of the loom or other convenient part.
The action is as follows:-When the ordinary picking tappet operates
the picking stick is moved as usual, meanwhile the partial rotation of
the picking shaft will, through the boss and arm already described, have
put a strain on the spring, which is greatest when the picking stick has
completed its outward movement. The spring so charged is however
by reason of the form of the hooked and cranked connecting rod,
powerless to act (because the pull of the spring is in the direction of a
line through the centre of the picking shaft) until the picker on striking
the "spindle stud" rebounds, and so owes a degree of momentum suffi-
cient to carry the arm of the boss over or out of its centre line, whercon
the spring is free to act and returns the picking stick and picker.
In crank arms we employ the cotter as usual, but dispense with the
set screw used for securing the cotter, the latter being made somewhat
longer than ordinary, and its lower or smaller end is provided with
several pin holes for the purpose of holding in position a bow or spiral
spring applied between the strap and pin.
I the work wo anelaon within a sing or lining of huffalo
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Christopher Catlow and Thomas Richmond in 2
the Great Seal Patent Office on the 3rd July.1875..
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, CHRISTOPHER
CATLOW, Overlooker, and THOMAS RICHMOND, Cotton Manufacturer,
both of Burnley, in the-County of Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her 3
Letters Patent, bearing date the Fourth day of January, in the year
of our Lord One thousand eight hundred and seventy-five, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto us, the said Christopher Catlow and

page_text: Thomas Richmond, Her special license, that we, the said Christophier
Catlow and Thomas Richmond, our executors, administrators, and
assigns, or such others as we, the said Christopher Catlow and Thomas
Richmond, 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 "IMPROVEMENTS IN LOOMS FOR WEAVING," upon the con-
dition (amongst others) that we, the said Christopher Catlow and
Thomas Richmond, our executors or administrators, by an instrument
in writing under our, 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 Letters Patent.
•
NOW KNOW YE, that we, the said Christopher Catlow and Thomas
Richmond, 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 :—
This Invention relates to improvements in the crank arms.
In crank arms we employ the cotter as usual, but dispense with the
set screw used for securing the cotter, the latter being made somewhat
longer than ordinary, and its lower or smaller end is provided with
several pin holes for the purpose of holding in position a bow or spiral
spring applied between the strap and pin.
-
Such being the nature and object of this Invention, we will now
proceed to describe the same more fully, and in order that the same
may be fully understood we have hereunto annexed a Sheet of Drawings
and have marked the same with figures and letters of reference.
: DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a side elevation of a crank arm having cotter and spring
according to this Invention. At A is the crank arm; B, the cotter
having a number of holes C formed through its lower and smaller end,
through one of which holes the pin-D is passed, and on which pin the
loose end of the spring E bears, so holding the cotter B firmly in its

page_text: place. The spring E is secured to the crank arm as shewn at F by pin,
set screw, or other convenient means.
As a modification of this Invention, we have shewn at Fig. 2, a
weight G applied and secured to the cotter by means of a set screw,
whereby the cotter is held securely in position. Fig. 3 is a view of the
weight detached.
In the Provisional Specification which we caused to be filed we
described under heading "Firstly" a means or apparatus for recovering
the picking stick, and under heading "Thirdly" the use of an improved
lining or packing for the necks of crank arms.
Since filing the Provisional Specification we have discovered that such
parts are not so useful as at the time of filing the Specification aforesaid
we believed them to be, we are therefore desirous of disclaiming, and
do hereby disclaim the same.
Having thus fully described the nature and particulars of this our
said Invention, together with the manner in which the same is to be
or may be performed or carried into practical effect, we would have it
understood that we claim, the means and apparatus for securing the
cotters of crank arms of looms for weaving as herein described and
illustrated by Drawings or any mere modification thereof.
In witness whereof, I, the said Christopher Catlow, for and on
behalf of myself and the said Thomas Richmond, have hereunto
set my hand and seal, this Second day of July, One thousand
eight hundred and seventy-five.