CERTAIN IMPROVEMENTS IN POWER LOOMS FOR WEAVING
Year: 1862

page_text: LETTERS PATENT to Henry Kilshaw, of Haslingden, in the County of
Lancaster, Spinner, and Edward Lord, of Rawtenstall, in the same
County, Mechanic, for the Invention of "CERTAIN IMPROVEMENTS IN
POWER LOOMS FOR WEAVING."
Sealed the 28th April 1863, and dated the 8th November 1862.
PROVISIONAL SPECIFICATION left by the said Henry Kilshaw and Edward
Lord at the Office of the Commissioners of Patents, with their Petition
on the 8th November 1862.
We, HENRY KILSHAW, of Haslingden, in the County of Lancaster, Spinner,
and EDWARD LORD, of Rawtenstall, in the same County, Mechanic, do hereby
declare the nature of the said Invention for "CERTAIN IMPROVEMENTS IN POWER
LOOMS FOR WEAVING," to be as follows:-
Our Invention relates to that part of the power loom known as the tappets
secured upon the tappet shaft, and employed for actuating the healds and
consists in the peculiar form of tappets to be employed for causing the back
healds to rise higher and fall lower than the front ones, and whereby an im-
provement is effected on the surface of the cloth. The forms of tappets or
cams are exhibited in the diagrams attached, and may be slightly modified as
shewn by the dotted lines if required.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Kilshaw and Edward Lord in the Great Seal Patent
Office on the 7th May 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, HENRY
KILSHAW, of Haslingden, in the County of Lancaster, Spinner, and EDWARD
LORD, of Rawtenstall, in the saine County, Mechanic, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighth day of November, in the year of our
Lord One thousand eight hundred and sixty-two, in the twenty-sixth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said Henry Kilshaw and Edward Lord, Her special license that we, the
said Henry Kilshaw and Edward Lord, our executors, administrators, and
assigns, or such others as we, the said Henry Kilshaw and Edward Lord,
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 "CERTAIN IMPROVEMENTS IN POWER
LOOMS FOR WEAVING," upon the condition (amongst others) that we, the
said Henry Kilshaw and Edward Lord, our executors or administrators, by
an instrument in writing under our, or one of our, or their or one of their
bands 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 Henry Kilshaw, 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
and accompanying Drawings (that is to say) :-
Our Invention relates to that part of the power loom known as the tappet
secured upon the tappet shaft and employed for actuating the healds, and
consists in the peculiar form of tappets to be employed for causing the back
healds to rise higher, and fall lower than the front ones, and whereby an
improvement is effected on the surface of the cloth.
In order that the Invention may be better understood and explained in
detail, we have hereunto attached a Sheet of Drawings made about the full
size, the parts of the peripheries of the tappets for effecting the several purposes
being marked with letters of reference.

page_text: Fig 1 is a side elevation representing the tappets as they would be employed
in an ordinary loom for weaving calico; Fig. 2 represents a smaller pair of
tappets as used in looms wherein long treddles are used. Supposing the
tappets to be rotating in the direction of the arrows, the surface of the tappet
from A to B would act upon the treadles and effect by its quick incline the
rapid opening of the "shed" to allow of the passage of the shuttle, the surface
from C to D, would cause the "dwell" allowing the healds to be almost
stationary during the passage of the shuttle, and the surface from E and F
would cause the shed to close quickly. I would remark that the parts A to B
and E to F, of the tappet marked *, and used for the back heald, are slightly
different in form to those parts in the front heald tappet, in order to cause
the back healds to rise higher and fall lower than the front, by which means an
improvement is effected on the surface of the cloth.
Having now described the nature of the said Invention, together with the
method of carrying the same into practical effect, we wish it to be distinctly
understood that we claim the peculiar form of the actuating surfaces to be
employed as tappets in power looms for weaving as herein-before described,
set forth, and fully illustrated in the Drawings attached.
In witness whereof, I, the said Henry Kilshaw, have hereunto set my
hand and seal, this Fifth day of May, in the year of our Lord,
One thousand eight hundred and sixty-three.
HENRY KILSHAW. (L.S.)