ARRANGEMENTS AND APPARATUS POR PRODUCING CONTINUOUS CIRCULAR MOTION, GIVING A SERIES OF DIFFERENT VELOCITIES OBTAINED FROM ALTERNATE MOTIONS, APPLICABLE TO LOOMS AND OTHER MACHINES
Year: 1852

page_text: LETTERS PATENT to David Crichton, of Manchester, in the County
of Lancaster, Machinist, for the Invention of "ARRANGEMENTS AND
APPARATUS POR PRODUCING CONTINUOUS CIRCULAR MOTION, GIVING A
SERIES OF DIFFERENT VELOCITIES OBTAINED FROM ALTERNATE MOTIONS,
APPLICABLE TO LOOMS AND OTHER MACHINES."
Sealed the 16th April 1853, and dated the 23rd October 1852.
PROVISIONAL SPECIFICATION left by the said David Crichton
at the Office of the Commissioners of Patents, with his Petition,
on the 23rd October 1852.
I, DAVID CRICHTON, of Manchester, in the County of Lancaster,
Machinist, do hereby declare the nature of the said Invention for
"ARRANGEMENTS AND APPARATUS FOR PRODUCING CONTINUOUS CIRCULAR
MOTION, GIVING A SERIES OF DIFFERENT VELOCITIES OBTAINED FROM ALTER-
HATE MOTIONS, APPLICABLE TO LOOKS AND OTHER MACHINES," to be as
follows, reference being made to the Drawings annexed hereto shewing
its application to a loom :-
Fig, 1, a side elevation: a, is a pinion on the tappet shaft end, working
into the wheel b; on the front of this wheel there is an adjustable radius

page_text: stud; this stud carries one end of the connecting rod c; the other end of
it is connected to the vibrating lever d; this lever is joined to the lever
e, by the links h, h; the ratchet wheel
9, is on the same centre, and the
two levers d, & e, have propellers or pawls u, u, on the top which
work or take into the ratchet wheel; i, is the bar which carries the
ends of the links h, h. Fig. 2, is a front elevation: K, is a horizontal
roller carried on the top of the slide, which slide is made to move
easily in the guide o; the slide b, is provided with a pin P, which takes
into the slot in the lover m; this lever has its fulcrum at q, and is
furnished with a balance weight r, at one end which keeps the roller
K, pressed against the cloth beam; the other end is bent to a right
angle, and has a curved slot (see Fig. 1,) into which the pin 8, works
at the end of the connecting rod c. The application of my Invention
to a loom will readily be understood, the mechanism for that purpose
being coloured blue in the Drawings. When the loom is put in motion
the action of the radius stud on the wheel b, will give an alternate
motion to the levers d, & e; by this means one of the pawls or pro-
pellers u, u, will always be communicating continuous circular motion
to the ratchet wheel g, and through it and the train of wheels to the
cloth beam of the loom. At the commencement of weaving a piece of
cloth the roller K, is brought close to the cloth roller, and that end of the
lever m, which carries it is then at its highest elevation; the pin s, will
then be at the upper end of the slot in the lever d, and will there com-
municate the greatest amount of vibrative motion to the levers d, & e,
which will be transmitted to the cloth beam by the pawls or propellers
u, u, & the ratchet and other wheels; as the cloth roller increases in
liameter the lever m, will be pressed down, and with it the pin s, and
thus the vibratory motion of the levers d, & e, decreased in the ratio
of the increased diameter of the cloth beam.
The Invention herein-before described was "provisionally registered"
by inc, as provided for by "The Protection of Inventions Act of 1851,"
at the Designs Office, London, on the 25th day of April 1851, and
numbered 19, under the title of "Arrangements and Apparatus for
producing Continuous Circular Motion, giving a Series of Different
Velocities obtained from Alternate Motions."

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said David Crichton in the Great Seal Patent Office,
on the 21st April 1853. .
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
DAVID CRICHTON, of Manchester, in the County of Lancaster, Machinist,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thenty-third day of October, in the
year of our Lord One thousand eight hundred and fifty-two, in the
sixteenth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said David Crichton, Her special license
that I, the said David Crichton, my executors, administrators, and
assigns, or such others as I, the said David Crichton, my executors, ad-
ministrators, 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 "ARRANGEMENTS AND APPA-
RATUS FOR PRODUCING CONTINUOUS CIRCULAR MOTION, GIVING A SERIES OF
DIFFERENT VELOCITIES OBTAINED FROM ALTERNATE MOTIONS, APPLICABLE TO
LOOMS AND OTHER MACHINES," upon the condition (amongst others) that I,
the said David Crichton, by an instrument in writing under my hand
and seal, 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 I, the said David Crichton, 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
the following statement, reference being had to the Drawings annexed
hereto, and to the letters and figures marked thereon, the same letters
and figures having reference to similar parts throughout the Drawings
(that is to say):
The principle of my Invention consists of communicating to a wheel

page_text: or pulley (by alternate or reciprocating motions) continuous circular
motion, giving a series of different velocities, either increasing or
decreasing, according to the requirements of the machinery to which
it is applied. The description and application of this principle of
mechanics is as follows, reference being made to the Drawings annexed
hereto, shewing its application to the cloth roller of a loom :-(Fig. 1,
Sheet 1,) is a side elevation of part of a loom: a, is a pinion on the end
of the tappet shaft, working into the wheel b; on the front of this wheel
there is an adjustable radius stud; this stud carries one end of the
connecting rod c; the other end of it is connected to the vibrating lever
d; this lever is joined to the lever e, by the links h, h; the ratchet wheel
g, and the two levers d, and e, are on the same centre; they have pro-
pellers or palls u, u, which work the ratchet wheel g; i, is the vertical
bar which connects the links h, h. (Fig. 2, Sheet 2,) is a front elevation
of a part of a loom: A, is an horizontal roller carried on the top of the
slide l, which is made to move easily in the guide O; the slide 1, is pro-
vided with a pin p, which takes into the slot in the lever m; this lever
has its fulcrum at q, and is furnished with a balance weight 1, at one
end which keeps the roller k, pressed against the cloth roller; the other
end is bent to a right angle, and has a curved slot (see Fig. 1, Sheet 1,)
into which the pin s, works at the end of the connecting rod c. The
application of my Invention to a loom will readily be understood, the
mechanism for that purpose being colored blue in the Drawings;
when the loom is put in motion the action of the radius stud on the
wheel b, will give an alternate motion to the levers d, and e, by the
connecting rod c, and by this means one of the propellers u, t, will
always be communicating continuous circular motion to the ratchet
wheel 9,
and then to the cloth roller through the medium of the train
of wheels. At the commencement of weaving a piece of cloth the
roller k, is brought close to the cloth roller, and that end of the lever m,
which carries it is then at its highest elevation; the pin 8, will then be
at the upper end of the slot in the lever d. and will there communicate
the greatest amount of vibrating motion to the levers d, and e, which is
transmitted to the ratchet wheel, giving it circular motion, which is
conveyed to the cloth roller through the train of wheels. It will be
seen that the same mechanical movement is equally applicable for letting

page_text: off the yarn from the yarn roller to be woven; the only difference being,
that as the roller is full of yarn at the commencement its velocity
requires increasing continually to deliver a constant quantity in the
same space of time. I may here state that this Invention is applicable
to the slubbing and roving spindle and fly frames in regulating the
various velocities of the bobbins and speed of the lifting rail.
Having now described my Invention, and in what manner it may be
performed and carried into effect, I would have it understood that I do
not claim the separate parts as of my Invention, they being already
well known, neither do I confine myself to the details herein given, but
reserve to myself the right of varying the same, so long as the peculiar
character of my Invention is retained. But what I claim is, firstly,
the combination and arrangement of apparatus and machinery for
producing continuous circular motion, giving a series of different
velocities obtained from alternate motions in its application to the
"taking up" and delivering rollers of the loom. Secondly, its applica-
tion for regulating the velocities of the bobbins and speed of the lifting
rail in the slubbing or roving spindle and fly frames; and believing this
principle of action in its application to machinery for effecting the
objects herein-before described to be new, I declare this as of my
Invention.
In witness whereof, I, the said David Crichton, have hereunto set
my hand and seal, this Twentieth day of April, in the year
our Lord One thousand eight hundred and fifty-three.
Signed, sealed, and delivered, being
first duly stamped, in the
presence of
PETER J. LIVSEY,
of Manchester.
DAVID CRICHTON. (L.S.)