IMPROVEMENTS IN LITHOGRAPHING AND LETTER PRESS PRINTING MACHINERY
Year: 1879

page_text: LETTERS PATENT to George Newsum, of Leeds, in the County of York, for
the Invention of "IMPROVEMENTS IN LITHOGRAPHING AND LETTER PRESS
PRINTING MACHINERY."
Sealed the 10th June 1879, and dated the 17th February 1879.
PROVISIONAL SPECIFICATION left by the said George Newsum at the
Office of the Commissioners of Patents on the 17th February 1879.
GEORGE NEWSUM, of Leeds, in the County of York.
GRAPHING AND LETTER PRESS PRINTING MACHINERY."
"IMPROVEMENTS IN LITHO-
My Invention refers to apparatus for taking the sheets off cylinders of litho-
graphing and letter press printing machines and depositing them on the delivery
boards.
The grippers are attached to a pair of endless bands, chains, or straps mounted
upon pulleys, and to which a continuous or intermittent traverse motion is imparted
thereby. I also employ another pair of pulleys which are used as tension pulleys
to give the required tightness to the endless bands, chains, or straps; these tension
pulleys are mounted in adjustable bearings, so that the distance between them and
the driving pulleys may be varied to suit the various sizes of the sheets.
The grippers are kept closed by means of springs, and in order to open them for
the purpose of admitting and taking the sheets off the cylinder and depositing
them afterwards on the delivery board I fix at suitable positions projecting parts,
inclines, or "paths," which act upon the grippers and open them. The grippers by
preference remain closed, except when in contact with the projections, inclines, or
paths."
Motion is imparted to the apparatus from some moving part of the machine.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Newsum in the Great Seal Patent Office on the 15th
August 1879.
GEORGE NEWSUM, of Leeds, in the County of York.
GRAPHING AND LETTER PRESS PRINTING MACHINERY."
"IMPROVEMENTS IN LITHO-
My Invention refers to apparatus for taking the sheets off cylinders of litho-
graphing and letter press printing machines and depositing them on the delivery
boards.
The grippers are attached to a pair of endless bands, chains, or straps mounted
upon pulleys, and to which a continuous or intermittent traverse motion is imparted
thereby. I also employ another pair of pulleys which are used as tension pulleys
to give the required tightness to the endless bands, chains, or straps; these tension
pulleys are mounted in adjustable bearings, so that the distance between them and
the driving pulleys may be varied to suit the various sizes of the sheets.
The grippers are kept closed by means of springs, and in order to open them for
the purpose of admitting and taking the sheets off the cylinder and depositing
them afterwards on the delivery board I fix at suitable positions projecting parts,
inclines; or paths," which act upon the grippers and open them. The grippers by
preference remain closed, except when in contact with the projections, inclines, or
"paths."
Motion is imparted to the apparatus from some moving part of the machine.
And in order that my Invention may be more completely understood reference is
given to the accompanying three Sheets of Drawings, and to the letters and marks
thereon
- Fig. 1 represents a transverse section; Fig. 2, a plan of that portion of a litho-
graphic printing machine to which my Invention is applied; Fig. 3, a transverse
section, and Fig. 4 a plan showing my improvements as applied to letter press
printing machines; Fig. 5 is an enlarged view of a portion of the same.
The grippers are shewn at a and mounted on a shaft b attached at each end to
the endless chains or straps c which are carried on pulleys & and d'; such pulleys
are keyed on shafts e and e¹, e being carried in fixed bearings fand e¹ in adjustable
bearings g. The pulleys & are adjusted in their bearings by means of the set
screws h, and for the purpose of tightening the chains or straps c. The grippers a
are kept closed by means of the elastic bands or other springs h¹; and in order to
open them for the purpose of taking the sheets off the cylinders; (which are of
ordinary construction) I provide the inclines or "paths" i which acts upon pulley "
mounted on lever i on the shaft b, thereby opening the grippers a and afterwards
allowing them to close upon the sheet, which is carried forward by the endless
chains or straps c to a suitable distance; the sheet is then released from the
gripper a by means of the pulley i¹ coming in contact with the adjustable incline
or "path", thereby opening the grippers a and depositing the sheet upon the
delivery boards k.
The grippers by preference remain closed, except when in contact with the
projections, inclines, or "paths" i and i³.
Motion is imparted to the apparatus from some suitable moving part of the
machine.
When used for letter press printing the chains or straps c are arranged at an
angle, as shewn at Figs. 3, 4, and 5. With this exception the parts are identical
with those described for Figs. 1 and 2. Corresponding parts in all views are
marked with the same letters.

page_text: Having now described the nature of the said Invention and described by the aid
of Drawings how the same may be carried into practice, I would have it understood
that I do not limit myself- to the exact limits, details, or configuration of the parts
I have described and illustrated on the accompanying Sheets of Drawings, as the
same may of course be varied or modified without departing from the nature of
my said Invention, but what I claim and desire to be secured to me by Letters
Patent is,―
First. The arrangement and application of endless chains or straps c, pulleys e,
and adjustable pulleys e¹ for giving the required continuous or intermittent traverse
motion to the grippers a, substantially as and for purposes herein set forth.
Second. The means or apparatus employed for opening and closing the grippers a,
substantially as and for purposes herein set forth.
Third. The arrangement and combination of the various parts forming the
apparatus for taking the sheets off cylinders of lithographing and letter press
printing machines and depositing them on the delivery boards, substantially as and
for purposes herein set forth.
In witness whereof, I, the said George Newsum, have hereunto set my hand
and seal, this Thirteenth day of August, in the year of our Lord One
thousand eight hundred and seventy nine.
GEORGE NEWSUM. (L.B.)