IMPROVEMENTS IN SELF-ACTING MULES
Year: 1870

page_text: LETTERS PATENT to Thomas Hart, Cotton Spinner, of Blackburn, in
the County of Lancaster, for the Invention of "IMPROVEMENTS IN
SELF-ACTING MULES."
Sealed the 3rd February 1871, and dated the 11th November 1870.
PROVISIONAL SPECIFICATION left by the said Thomas Hart at the
Office of the Commissioners of Patents, with his Petition, on the
11th November 1870.
I, THOMAS HART, Cotton Spinner, of Blackburn, in the County of
Lancaster, do hereby declare the nature of the said Invention for " IM-
PROVEMENTS IN SELF-ACTING MULES," to be as follows:-
This Invention relates to the cam shaft mule, and consists in improved
mechanism for shifting the driving strap from the fast to the loose
pulley to stop the revolution of the spindles and rollers and the drawing
out of the carriage. For this purpose I employ an arm or lever con-
nected by a rod to the arm or lever carrying the ordinary strap fork and
work the first-mentioned arm or lever by means of the quadrant, the
carriage, or levers or projections connected to them, which arrangement

page_text: relieves the cam shaft and backing off motion very considerably, con-
sequently diminishing the wear and tear of the machine with its straps
and bands.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Hart in the Great Seal Patent Office
on the 10th May 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
HART, Cotton Spinner, of Blackburn, in the County of Lancaster, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eleventh day of November, in the
year of our Lord One thousand eight hundred and seventy, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Thomas Hart, Her special licence that
I, the said Thomas Hart, my executors, administrators, and, assigns, or
such others as I, the said Thomas Hart, my executors, administrators,
and assigns, should at any time agree with, and no others, from timo
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 SELF-ACTING MULES," upon
the condition (amongst others) that I, the said Thomas Hart, my exe-
cutors or administrators, by an instrument in writing under my, 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 I, the said Thomas Hart, 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 (that is to say) :-
This Invention relates to the cam shaft mule and consists in improved
mechanism for shifting the driving strap from the fast to the loose
pulley to stop the revolution of the spindles and rollers and the drawing

page_text: out of the carriage. For this purpose I employ an arm or lever con-
nected by a rod to the arm or lever carrying the ordinary strap fork,
and work the first-mentioned arm or lever by means of the quadrant,
the bell wheel shaft, the carriage, or levers or projections connected to
them, which arrangement relieves the cam shaft and backing off motion
very considerably, consequently diminishing the wear and tear of the
machine with its straps and bands.
Having now described the nature and particulars of my said Invention,
and the manner in which the same is to be performed, I desire it to be
understood that in cam shaft mules I claim the improved mode of
shifting the driving strap from the fast to the loose pulley for the
purposes required as herein described.
In witness whereof, I, the said Thomas Hart, have hereunto set
my hand and scal, this Ninth day of May, in the year of our
Lord One thousand eight hundred and seventy-one.
Signed, scaled, and delivered by the
above-named Thomas Hart, in the
presence of
G. SEPTIMUS HUGHES,
Patent Agent,
Manchester.
THOMAS HART. (L.S.)