IMPROVEMENTS IN APPARATUS OR APPLIANCES FOR TAKING OFF AND DELIVERING PRINTED SHEETS OF PAPER FROM PRINTING MACHINES
Year: 1877

page_text: LETTERS PATENT to Mark Smith, of Liverpool, in the County of Lancaster,
Printer's Machinist, for the Invention of "IMPROVEMENTS IN APPARATUS OR
APPLIANCES FOR TAKING OFF AND DELIVERING PRINTED SHEETS OF PAPER
FROM PRINTING MACHINES."
Sealed the 31st July 1877, and dated the 16th February 1877.
$8
PROVISIONAL SPECIFICATION left by the said Mark Smith at the Office of
the Commissioners of Patents on the 16th February 1877.
MARK SMITH, of Liverpool, in the County of Lancaster, Printer's Machinist.
IMPROVEMENTS IN APPARATUS OR APPLIANCES FOR TAKING OFF AND DELIVERING
PRINTED SHEETS OF PAPER FROM PRINTING MACHINES."
This Invention relates to taking off and delivering printed sheets of paper
from that class of printing machines in which a reciprocating type bed or
platten and a rotating cylinder are employed, and consists in employing a
swinging frame provided with grippers to take the printed sheet from the
holding grippers of the rotating cylinder and deliver the said printed sheet
on a board or table. Motion is given to the swinging frame through levers and a
cam or like means. The grippers on the swinging frame are closed by a spring or
springs or by a weight or weights, and are opened at the desired points by means
of a double arm lever or its equivalent, attached to a shaft carrying the said
grippers striking against stops.
The action of the mechanism is as follows:-When the printed sheet is ready for
removal from the cylinder, one end of the arm or lever which actuates the gripper
shaft strikes, by means of the swinging motion of the frame, against a rotating stop,
and the grippers are opened so as to seize the end of the printed sheet as it comes
round with the cylinder. The grippers are then allowed to close by the arm falling
into a notch or recess in the rotating stop piece; the frame now swings away from
the cylinder and takes with it the printed sheet until it arrives over a board or
table, when the other end of the arni or lever which operates the grippers, strikes
against a stop, and causes the grippers to open and deposit the printed sheet.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Mark Smith in the Great Seal Patent Office on the 15th August
1877.
MARK SMITH, of Liverpool, in the County of Lancaster, Printer's Machinist.
"IMPROVEMENTS IN APPARATUS OR APPLIANCES FOR TAKING OFF AND DELIVERING
PRINTED SHEETS OF PAPER FROM PRINTING MACHINES."
This Invention relates to taking off and delivering printed sheets of paper from
that class of printing machines in which a reciprocating type bed or platten and a
rotating cylinder are employed; and consists in employing a swinging frame pro-
vided with grippers to take the printed sheet from the holding grippers of the
rotating cylinder and deliver the said printed sheet on a board or table. Motion is
given to the swinging frame through levers and a cam or like means.
The grippers
on the swinging frame are closed by a spring or springs, or by a weight or weights,
and are opened at the desired points by means of a double arm lever or its
equivalent, attached to a shaft carrying the said grippers striking against stops.
The action of the mechanism is as follows:-When the printed sheet is ready for
removal from the cylinder, one end of the arm or lever which actuates the gripper
shaft strikes, by means of the swinging motion of the frame, against a rotating stop,
and the grippers are opened so as to seize the end of the printed sheet as it comes
round with the cylinder. The grippers are then allowed to close by the arm falling
into a notch or recess in the rotating stop piece; the frame now swings away
from the cylinder and takes with it the printed sheet until it arrives over a board
or table, when the other end of the arm or lever which operates the grippers strikes
against a stop, and causes the grippers to open and deposit the printed sheet.
Fig. 1 is a plan view, and Fig. 2 a side elevation of so much of a printing
machine and apparatus or appliances as is necessary to illustrate my Invention.
1 is the rotating cylinder; 2, swinging frame supported on the standards 3, and pro-
vided with grippers 4. The swinging frame 2 receives motion by means of the
lever 5 acted upon by a cam or like means operated from any convenient part of
the printing machine; 6, spring for keeping the grippers 4 closed; 7, 8, double arm
or lever for giving motion to the grippers at the desired times; 9, 10, are stops
against which the lever 7, 8, strikes.
The operation is as follows:-The sheet of paper being ready for removal, the
cylinder 1 and swinging frame 2 are in the position shown in the Drawings, the
grippers are opened by the end 7 of the double arm or lever striking against the
stop 9; as the swing frame recedes it assumes the position shown by the dotted
lines a, and the grippers are closed so as to seize the end of the sheet. The
swinging frame then travels onwards until it is in the position shown by the dotted
lines b, when the end 8 of the double arm or lever strikes against the stop 10, and
the grippers open so as to deposit the sheet on the table 11. The above operation
is repeated during each revolution of the machine.
Having now described the nature of the said Invention, in such manner that
others will be enabled to carry my improvements into effect, I claim the apparatus
or appliances for taking off and delivering printed sheets of paper from printing
machines, substantially as described and illustrated.
In witness whereof, I, the said Mark Smith, have hereunto set my hand and
seal, the Thirteenth day of August, in the year of our Lord One thousand
eight hundred and seventy-seven.
JAMES JOHNSON,
Patent Office,
Clayton Square,
Liverpool.
MARK SMITH. (L.S.)