AN IMPROVEMENT TOPARAPHIC LITHOGRAPHIC. AND ZINCOGRAPHIC PRINTING MACHINER "
Year: 1870

page_text: LETTERS PATENT to Charles Henry Gardner, of West Harding
Street, Fetter Lane, in the City of London, Printing Machine
Manufacturer, and George Howard Carey, of Bermondsey, in the
County of Surrey, Printer, for the Invention of "AN IMPROVEMENT
TOPARAPHIC LITHOGRAPHIC. AND ZINCOGRAPHIC PRINTING MACHINER
"
PROVISIONAL SPECIFICATION left by the said Charles Henry Gardner
and George Howard Carey at the Office of the Commissioners of
Patents, with their Petition, on the 7th April 1870.
We, CHARLES HENRY GARDNER, of West Harding Street, Fetter
Lane, in the City of London, Printing Machine Manufacturer, and
GEORGE HOWARD CAREY, of Bermondsey, in the County of Surrey,
Printer, do hereby declare the nature of the said Invention for "AN
IMPROVEMENT IN TYPOGRAPHIC, LITHOGRAPHIC, AND ZINCOGRAPHIC PRINTING
MACHINES," to be as follows:-
The object of our Invention is the construction, arrangement, and
application of adjustable apparatus to be used in typographic, litho
graphie, and zincographic cylinder printing machines, in order to
regulate the speed of the cylinder as required.

page_text: The apparatus is as follows:-A wheel is placed on the axis of (or is
otherwise connected with) the cylinder, and over or opposite to a part
of the circumference of this wheel is placed a friction piece break or
curved frictional break piece, connected at one end with an adjustable
arm or lever fitted to the framework of the machine, and furnished with
a screw and nut or other regulating contrivances, by which it may be
adjusted as required and thereby adjust the proximity of the frictional
or curved piece to the circumference of the wheel of the cylinder. The
other end of the break or curved piece is connected with another lever
or arm, which may also be made adjustable by nut and screw or
equivalent regulating contrivances. The break or curved piece is
brought nearer to or farther from the wheel as required, and by its
frictional action regulates the velocity of the wheel, and therefore the
speed of the cylinder to a desired extent.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Henry Gardner and George Howard
Carey in the Great Seal Patent Office on the 7th October 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, CHARLES
HENRY GARDNER, of West Harding Street, Fetter Lane, in the City of
London, Printing Machine Manufacturer, and GEORGE HOWARD CAREY,
of Bermondsey, in the County of Surrey, Printer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Hor
Letters Patent, bearing date the Seventh day of April, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors,
give and graut unto us, the said Charles Henry Gardner and George
Howard Carey, Her special licence that we, the said Charles Henry
Gardner and George Howard Carey, our executors, administrators, and
assigns, or such others as we, the said Charles Henry Gardner and
George Howard Carey, 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 "AN IMPROVEMENT IN TYPOGRAPHIC, LITHOGRAPHIC, AND ZINCO-

page_text: GRAPHIC PRINTING MACHINES," upon the condition (amongst others) that
we, the said Charles Henry Gardner and George Howard Carcy, our
executors or administrators, by an instrument in writing under our or
their hands and scals, or under the hand and seal of one of us or
them, 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 we, the said Charles Henry Gardner and
George Howard Carey, 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 thereof,
reference being had to the accompanying Drawings, and to the letters
and figures marked thereon, that is to say :-
The object of our Invention is the construction, arrangement, and
application of adjustable apparatus to be used in typographic, lithographic,
and zincographic cylinder printing machines, in order to regulate the
speed of the cylinder as required.
The apparatus is constructed and applied as follows:--A wheel is
placed on the axis of the cylinder; over or opposite to a part of the
circumference of this wheel is placed a curved friction piece or friction
break connected at one end with an adjustable arm or lever fitted to the
framework of the machine, and furnished with a screw and nut or other
regulating contrivance by which its position may be adjusted as required,
so as thereby to adjust the proximity of the frictional curved piece to the
circumference of the wheel on the axis of the cylinder. The other end
of the break or curved piece is connected with another lever or arm,
which may also be made adjustable by nut and screw, or equivalent
regulating contrivances. The break or curved friction piece is thus
brought nearer to or farther from the aforesaid wheel as required, and
by its frictional action it regulates the velocity of the wheel, and therefore
the speed of the cylinder to the desired extent.
The accompanying Drawings exemplify the mode of carrying the
Invention into practical effect.
The Ticure is an alevation of our improved annamatue shown as annlied

page_text: A is the axis of the ordinary printing cylinder, supported in the general
framework B of the machine; C is a wheel with smooth periphery
keyed on the axis A; D is a curved steel bar forming a friction break,
and so placed as to be opposite a portion of the circumference of the
wlicel C. On the inside of this steel bar are curved wood blocks d, d.
This bar D is jointed at one end to a lever or arm E which is screw
threaded at its farther extremity E*, and is screwed into an eye
or collar e at one end of an arm F, fitted to the framework B by its
screw threaded end g. The arm E is held in place in the eye or collar e
by nuts ff. At its opposite extremity the bar D is jointed to an arm G,
This arm
which works on a stud fixed to the general framework B.
'may also be made adjustable by screw and nut like the arm E. By
adjusting the nuts and arm E or arms E, G, the proximity of the bar D
to the wheel C is regulated as desired, and hence the frictional contact
of the bar D with the wheel C is regulated as required, thus determining
the speed of the wheel C, and hence of the printing cylinder on the axis
of which such wheel is keyed.
From the foregoing description and Drawing the mode of applying
the arrangement to a lithographic or zincographic printing cylinder is
obvious.
Having now described the nature of the said Invention, and in what
manner it may be performed, we declare that we claim as constituting
the said Invention, the construction and application of apparatus having
its parts arranged and combined substantially as described for the
purpose of regulating the speed of the cylinder of typographic, litho-
graphic, and zincographic cylinder printing machines.
In witness whereof, I, the said Charles Henry Gardner, for myself
and on behalf of the said George Howard Carey, have hereunto
set my hand and seal, this Fourth day of October, in the year
of our Lord One thousand eight hundred and seventy.
Witness,
E. DE PASS,
68, Fleet Street, E.C.
C. H. GARDNER. (L.S.)