IMPROVE- MENTS IN MACHINERY FOR GINNING COTTON."
Year: 1864

page_text: LETTERS PATENT to John Tomlinson Pendlebury, of Elton-within-Bury,
in the County of Lancaster, Machinist, for the Invention of "IMPROVE-
MENTS IN MACHINERY FOR GINNING COTTON."
PROVISIONAL SPECIFICATION left by the said John Tomlinson:
Pendlebury at the Office of the Commissioners of Patents, with his
Petition, on the 30th September 1864...
I, JOHN TOMLINSON PENDLEBURY, of Elton-within-Bury, in the County of
L'ancaster, Machinist, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN MACHINERY FOR GINNING COTTON," to be as follows:-
My improvements relate to a novel arrangement and construction of me-
chanism for imparting or giving motion to the beater or "knife" employed in
apparatus termed "gins" for ginning cotton, and consist in the employment.
and use of grooved or tappet cams fixed on each end of the "gin roller," the
said-cams being constructed with as many swells or tappets as the number of
strokes the beater or "knife" is required to make in one revolution of the
roller. Thus when motion is given to the roller the "swells" or tappets
act upon
a bowl secured to a radial arm or lever or levers carrying the afore-
said "knife" or "beater," which has its fulcrum on the framing of the " gin,"

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Tomlinson Pendlebury in the Great Seal Patent Office
on the 21st January 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
TOMLINSON PENDLEBURY, of Elton-within-Bury, in the County of Lancaster,
Machinist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirtieth day of September, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-eighth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said John Tomlinson Pendlebury, Her special license that I,. the said
John Tomlinson Pendlebury, my executors, administrators, and assigns, or
such others as I, the said John Tomlinson Pendlebury, my executors, admi-
nistrators, 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 "IMPROVENTS IN MACHINERY FOR GINNING COTTON," upon
the condition (amongst others) that I, the said John Tomlinson Pendle-
bury, my executors or administrators, by an instrument in writing under iny,
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.John. Tomlinson Pendlebury, 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):-,
My improvements relate to a novel arrangement and construction of me-
chanism for imparting-or-giving motion to the beater or" knife" employed in
apparatus termed "gins" for ginning cotton, and consists in the employment
and use of grooved or tappet cams fixed on each end of the "gin. roller," the
said cams being constructed with as. many swells or tappets as the number of

page_text: strokes the beater or knife is required to make in one revolution of the roller.
Thus when motion is given to the roller the "swell," or "tappets," act upon a
bowl secured to a radial arm or lever or levers carrying the aforesaid "knife
or beater which has its fulcrum on the framing of the "gin," thereby giving, as
the levers are caused to rise and fall, the necessary and required stroke to the
"knife" for stripping.
In order that the Invention may be better understood and explained in.
detail I have hereunto attached a Sheet of Drawings, Fig. 1 being made
upon a scale of about three inches to the foot, and Fig. 2 about full size,
similar letters of reference being marked upon corresponding parts in both
Figures.
Fig. 1 represents a side elevation of a cotton gin having the improved
grooved cam secured on the gin roller shaft, also its connecting, apparatus
through which it. is caused to give the desired stroke or lift to the knife or
beater, and Fig. 2 is a detached view of the cam shewing the construction and
arrangement of the tappet groove for actuating and giving the necessary
number of strokes to the beater or knife during one revolution of the gin
roller.
In Fig. 1 a, a, is the framing of the machine, and 6 the shaft of the gin
roller, all of which parts are well known. On the ends of this shaft a pair of
grooved cams are secured similar to the one shewn at Fig. 2; these cams as
they revolve actuate the bowls c secured to the radial arm or levers d the
fulcrum of which is attached to the frame at d'; to these radial arms are
secured brackets e, upon which the knife f is secured, so as to be adjustable,
which is thus caused as the cam revolves to vibrate or beat as required.
I would remark that I am aware that tappet cams having a number of lifts
in one revolution have been hitherto employed, but they have produced con-
siderable friction, and have been otherwise detrimental, I therefore hereby
disclaim the portion of the Invention relating to tappet cams.
Having now described the nature of the said Invention, together with the
method of carrying the same into practical effect, I wish it to be distinctly
understood that I claim,-
First, the novel employment, adaptation, and use of grooved cams having or
containing a number of "lifts," and arranged so as to cause the "knife" to
make any required number of strokes or beats with each revolution of the
gin roller."
"
And, secondly, the use of a bowl roller block or pin working within the
undulating groove of the cam and connected to the beater by means of a

page_text: connecting rod when applied to the cotton gins as herein-before described, .set
forth,.and fully illustrated in the Drawings attached.
f
In witness whereof, I, the said John Tomlinson Pendlebury, have here-
unto set my hand and seal, this Seventeenth day of January, in the
year of our Lord One thousand eight hundred and sixty-five.
Witnessed-by
JOHN L. DAVIES,.
JOHN TOMLINSON PENDLEBURY. (L.S.).
Office for Patents,
Manchester..