IMPROVEMENTS IN LOOMS
Year: 1857

page_text: LETTERS PATENT to William Hartley and Thomas Hardman Farrar, of
Bolton, in the County of Lancaster, Machinists, for the Invention of
"IMPROVEMENTS IN LOOMS."
Sealed. the 25th August 1857, and dated the 4th March 1857.
PROVISIONAL SPECIFICATION left by the said William Hartley and
Thomas Hardman: Farrar at the Office of the Commissioners of Patents,
with their Petition, on the 4th. March 1857.
We, WILLIAM HARTLEY and THOMAS HARDMAN FARRAR, of Bolton, in the
County of Lancaster,. Machinists,, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN LOOMS," to be as follows:-
We give a double dwell to the slay by means of eccentric gearing, one of
the wheels being placed on the ordinary cranked shaft and the other on a
countershaft, to which the driving pullies are attached.
The modus operandi will be clearly understood by reference to the accom-
panying outline Drawing, in which Fig. 1 is a transverse elevation, shewing
the shaft and the wheel; and Fig. 2 is a plan of the same. a represents
the cranked shaft; b, the counter or driving shaft; and c, the eccentric
toothed wheels, which can be arranged with any eccentricity, so as to give
any desired amount of dwell to the slay.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Hartley and Thomas Hardman Farrar in the Great
Seal, Patent Office on the 3rd September 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
HARTLEY and THOMAS HARDMAN FARRAR, of Bolton, in the County of Lan-
caster, Machinists, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth day of March, in the year of our Lord
One thousand eight hundred and fifty-seven, in the twentieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said William Hartley and Thomas Hardman Farrar, Her special license
that we, the said William Hartley and Thomas Hardman Farrar, our executors,
administrators, and assigns, or such others as we, the said William Hartley
and Thomas Hardman Farrar, 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," upon the condition (amongst others) that we, the
said William Hartley and Thomas Hardman Farrar, by an instrument in
writing under our hands and seals, or the band and seal of one of us, 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- imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Hartley, for and on behalf of
myself and the said Thomas Hardman Farrar, do hereby declare the nature
of the 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)
Our said Invention consists in giving a dwell to the slay, lathe, healds, or
shed in the opération of weaving by all kinds of looms; by means of eccentric
gearing, one of the wheels being placed on the ordinary cranked shaft, and
the other on a stud or countershaft to which the pulleys are attached. The
said dwell can be adjusted to any desired part of the stroke or beat according
to the position of the wheel on the cranked shaft. The gearing may be either
elliptical or otherwise, and be made of any eccentricity required.
These improvements will be clearly understood by reference to the accom-

page_text: panying Sheet of Drawings, with the figures and letters of reference thereon,
in which Fig. 1 is a transverse elevation of the eccentric gearing and parts
to which it is connected; Fig. 2 is a plan of the same; and Fig. 3 a transverse
clevation of a part of a loom having our improvements attached.
In Figs. 1 and 2, which are drawn to an enlarged scale, a represents the
ordinary cranked shaft of the loom; b, the counter or driving shaft; c, the
eccentric toothed wheels or gearings; d, the fast and loose pullies; c, part
of the end frame or support for the countershaft.
In Fig. 3, drawn to a reduced scale, the aforesaid parts are represented
by similar letters, but we shew the cranked shaft a connected by the link or
rod g to the sword arın h, carrying the lathe or slay in the usual manner.
Having thus fully described the nature of our said Invention, and the
manner in which the same is to be performed, we desire it to be distinctly
understood that we do not confine ourselves to the precise details herein set
forth, as such may be varied or modified without departing from the principle
thereof; but we claim as our Invention, and which to the best of our know-
ledge and belief has not been hitherto used within the Realm, the mode or
method of giving the necessary dwell to the lathe, slay, healds, or shed, in
the operation of weaving by all kinds of looms, at any desired part of the
stroke or beat by means of eccentric gearing, as herein described, and illustrated
in the accompanying Sheet of Drawings.
In witness whereof, I, the said William Hartley, for and on behalf of
myself and the said Thomas Hardman Farrar, have hereunto set my
hand and seal, this Twenty-eighth day of August, in the year of our
Lord One thousand eight hundred and fifty-seven.
WILLIAM HARTLEY. (L.S.)
Signed, sealed, and delivered (being first duly
stamped) by the within-named William
Hartley, in the presence of
E. J. HUGHES, Patent Agent,
Manchester..