IMPROVEMENTS IN OR APPLICABLE TO MACHINERY OR APPARATUS FOR SPINNING WORSTED OR OTHER FIBROUS SUBSTANCES KNOWN AS CAP FRAMES
Year: 1866

page_text: LETTERS PATENT to James Marsland Tankard, of the Firm of J. and J.
Tankard, of Bradford, in the County of York, Worsted Spinners, and
John Cockcroft, of the same Place, Factory Manager, for the Invention
of "IMPROVEMENTS IN OR APPLICABLE TO MACHINERY OR APPARATUS FOR
SPINNING WORSTED OR OTHER FIBROUS SUBSTANCES KNOWN AS CAP
FRAMES."
Scaled the 4th December 1866, and dated the 5th Juno 1866.
PROVISIONAL SPECIFICATION left by the said James Marsland Tankard
and John Cockcroft at the Office of the Commissioners of Patents,
with their Petition, on the 5th June 1866.
We, JAMES MARSLAND TANKARD, of the Firm of I. and J. Tankard, of
Bradford, in the County of York, Worsted Spinners, and JOHN COCKCROFT,
of the same Place, Factory Manager, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN OR APPLICABLE TO MACHINERY OR
APPARATUS FOR SPINNING WORSTED OR OTHER FIBROUS SUBSTANCES KNOWN AS CAP
FRAMES," to be as follows:-
This Invention consists in applying a glass washer betwixt the tube and the
lifter plate on each cap spindle or stud instead of the wood or metal washers
heretofore employed; also we form these glass washers (by preference)
concave on the upper surface, to facilitate the lubrication of the said spindles
or studs and the tubes sliding thereon.

page_text: i
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Marsland Tankard and John Cockcroft in the Great
Seal Patent Office on the 4th December 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JAMES
MARSLAND TANKARD, of the Firm of J. and J. Tankard, of Bradford, in the
County of York, Worsted Spinners, and Jonn CocкCROFT, of the same Place,
Factory Manager, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifth day of June, in the year of our Lord One
thousand eight hundred and sixty-six, in the twenty-ninth year of Her
reign, did, for Herself, Her beirs and successors, give and grant unto us,
the said James,Marsland Tankard and. John: Cockcroft, Her special licence
that we, the said James Marsland Tankard and John Cockcroft, our
executors, administrators, and assigns, or such others as we, the said James
Marsland Tankard and John Cockcroft, 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 OR APPLICABLE TO MACHINERY OR APPARATUS FOR SPINNING
WORSTED OR OTHER FIBROUS SUBSTANCES KNOWN AS CAP FRAMES," upon the
condition (amongst others) that we, the said James Marsland Tankard and
John Cockcroft, our executors or administrators, by an instrument in
writing under our, or their, or one of their hands and seals, should par-
ticularly describe and ascertain the nature of the said Invention, and in
what manner the same was to be performed, and cause the same to bo
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 James Marsland Tankard and John
Cockcroft, 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 consists in applying a glass washer betwixt the tabe and
the lifter plate on each cap spindle or stud instead of the wood or metal

page_text: washers heretofore employed; also we form these glass washers (by preference)
concave on the upper surface to facilitate the lubrication of the said spindles
or studs and the tubes sliding thereon.
By means of this Invention friction is diminished, and consequently wear and
tear of the machinery; also a more regular twist is given to the yarn and a
saving is effected in the driving bands and lubricating oil.
The manner in which this Invention is to be or may be performed or carried
into practical effect will be readily understood by all who are conversant with
spinning machinery. The best means or method we have found for obtaining
or manufacturing these washers is by casting them of flint glass in a mould or
moulds suitably formed for the purpose, but other means may be adopted for
their manufacture, as by cutting them out of plate glass to the form required;
by this method, however, they cannot be made concave on the upper surface,
which is very desirable, whereas by casting them they may be made of any
required concavity and of any other desirable form.
Having thus fully described the nature of our said Invention, and 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 do not confine or
restrict ourselves to any particular size or form of washers, or to the kind
of glass or method of manufacture or construction thereof, as various modifi-
cations may be made in these particulars without departing from the principle
of the Invention, but what we claim as our Invention is the application and
use of washers constructed of glass for the purpose herein set forth.
In witness whereof, I, the said John Cockcroft, for and on behalf of
myself and the said James Marsland Tankard, have hereunto set my
hand and seal, this First day of December, One thousand eight
Signed, sealed, and delivered by the
within-named John Cockcroft, in
the presence of
ARTHUR B. CROSSLEY,
Clerk to William Tasker,
Patent Agent,
Halifax.
JOHN COCKCROFT. (L.s.)