Improvements connected with Machinery for Paper-bag Making.
Year: 1890

page_text: Date of Application, 8th Apr., 1890
Complete Specification Left, 8th Jan., 1891-Accepted, 4th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements connected with Machinery for Paper-bag Making.
I, CHARLES ANDERSON, of Fettykil Leslie, in the County of Fife, Papermaker,
do hereby declare the nature of this invention to be as follows:-
The object of my invention is to enable the web of paper to be printed with any
name or device before it passes onto the mould plate of the bag making machine,
which may be of any type, having an intermittent motion so that each bag when
completed bears the required name or device. To this end I attach to the back of
the machine certain mechanism comprising a vertical frame, supported upon a
fulcium at its lower end, and having imparted to it an oscillating motion, by con-
necting rods from eccentrics, cams or cranks upon the main shaft, or upon a counter
shaft, so arranged that the frame is made to oscillate once backwards and once
forwards for each bag to be made. The front of the vertical frame is formed with
a cavity for the reception of the "chase" or "form" holding the matter or device
to be printed and upon the back end of the machine is a block called in other
printing machines a "platten" forming a pad for the paper whilst receiving the
impression to be printed upon it. On the top of the oscillating frame is a trough
for the ink in which works a roller or inking duct and a distributing table having
an intermittent revolving motion, from which the inking rollers take up their
supply of ink. The inking rollers are connected to a swinging frame mounted on a
fixed shaft or stud to which frame is attached one end of a connecting rod the other
end of which is attached to the frame of the bag making machine in such relation
to the connecting rods which oscillate the main vertical frame as to cause the
inking rollers, when the main oscillating frame moves forward toward the impression
block or "platten" to pass over the distributing table and receive a supply of ink
which they impart to the "chase or "form when the main oscillating frame
moves back again.
ود
In pulling the paper from the web or roll for the purpose of being printed,
previous to entering onto the mould plates of the machine to be formed into bags it
is necessary to steady the paper when the impression is being transferred otherwise
the printing would be slurred, and the paper liable to be torn, and to obviate this
I propose to fit to the machine a pair of gripping rods or plates or similar
appliance which will hold the strip of paper while the bag machine lever is
unwinding the required length of paper from the roll for the succeeding bag and
then to release it and allow the printed strip to be drawn forward onto the mould
plates of the machine to be made into a bag while another portion of the web is
being presented to the printing machine.
Dated this 8th day of April 1890.
T. J. DANSON,
Per L. W.
COMPLETE SPECIFICATION.
Improvements connected with Machinery for Paper Bag Making.
I, CHARLES ANDERSON, of Fettykil Leslie, in the County of Fife, Papermaker,
do hereby declare the nature of my invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following.
statement :-
The object of my invention is to enable the web of paper to be printed with any

page_text: "
name or device before it passes onto the mould plate of the bag making machine,
which may be of any type, having an intermittent motion so that each bag when
completed bears the required name or device. To this end I attach to the back of
the machine certain mechanism comprising a vertical frame, supported upon a
fulcrum at its lower. end, and having imparted to it an oscillating motion, by con-
necting rods from eccentrics, cams or cranks upon the main shaft, or upon a
counter shaft, so arranged that. the frame is made to oscillate once backwards and
once forwards for each bag to be made. The front of the vertical frame is formed
with a cavity for the reception of the "chase or "form" holding the matter or
device to be printed and upon the back end of the machine is a block called in
other printing machines a "platten" forming a pad for the paper whilst receiving
the impression to be printed upon it. On the top of the oscillating frame is a
trough for the ink in which works a roller or inking duct and a distributing table
having an intermittent revolving motion, from which the inking rollers take up
their supply of ink. The inking rollers are connected to a swinging frame mounted
on a fixed shaft or stud to which frame is attached one end of a connecting rod the
other end of which is attached to the frame of the bag making machine in such
relation to the connecting rods which oscillate the main vertical frame as to cause
the inking rollers, when the main oscillating frame moves forward toward the
impression block or platten to pass over the distributing table and receive
a supply of ink which they impart to the "chase" or "form" when the main
oscillating frame moves back again.
"
In pulling the paper from the web or roll for the purpose of being printed,
previous to entering onto the mould plates of the machine to be formed into bags it
is necessary to steady the paper when the impression is being transferred otherwise
the printing would be slurred, and the paper liable to be torn, and to obviate this
I propose to fit to the machine a pair of gripping rods or.
plates or similar
appliance which will hold the strip of paper while the bag machine lever is
unwinding the required length of paper from the roll for the succeeding bag and
then to release it and allow the printed strip to be drawn forward onto the mould
plates of the machine to be made into a bag while another portion of the web is
being presented to the printing machine.
DESCRIPTION OF DRAWINGS.
"
The accompanying sheet of drawings shews my invention applied to an ordinary
bag making machine. Figure 1 is a side elevation and Figure 2 a half plan, and
only those parts which are essential to render the mechanism intelligible are shewn
the minor details being omitted. The oscillating frame carrying the "chase" or
"form" with the distributing table and ink "duct" the swinging frame, carrying
the inking rollers also the arresting gear holding the paper while being printed are
shewn by the full lines as they appear when the web or strip of paper is receiving
the impression and by the strong dotted lines in the position in which, the printing
having been performed, the web or strip has been drawn forward by the ordinary
gear presenting a fresh portion to be printed the oscillating frame having swung
backward and caused the swinging frame to carry the inking rollers which have
taken up a supply of ink from the distributing table to pass over the "chase
"form" and ink it ready for the next forward advance of the oscillating frame.
A is the oscillating frame working on the pin or fulcrum B attached to the back
of the bag making machine and carrying a chase or "form" X which contains
the name or device to be printed and operated by the connecting rod C from a
crank disc D on the transverse shaft E which forms part of an ordinary machine.
The swinging frame F works on the fulcrum pin G on the frame A and being
controlled by the rod H, fixed at one end to the machine frame, takes the two
extreme positions shewn by full and dotted lines. J is the distributing table which
has a reciprocating revolving motion given to it by mechanism (not shewn) and to
which the ink is conveyed from the "duct" roller by an inking roller K and, after
being distributed, is taken up by the inking rollers L and L which are attached
"
or

page_text: to the swinging frame F by rods M controlled by springs N which keep the rollers
in contact with the table J.
The mechanism by which the paper web or strip is pulled off the roll may be of
"
"cam
any ordinary description but in this case consists of a
O actuating by a
connecting rod a double ended lever P which, in the position shewn by full lines
Figure 1 has pulled off a sufficient length of paper for the bag which is to follow
that being printed. During the process of printing it is necessary, in order to
prevent the paper being torn or the impression "slurred," to arrest for an interval
the web or strip and this is provided for by the moveable gripping roller Q on end
of curved arm R actuated by a lever S which is depressed by the larger portion of
the periphery of a cam T on the shaft E and raised to the position shewn by full
lines by a spring U when the cam T has made half a revolution the roller Q then
pressing the web or strip against the fixed roller V and when the printing is
completed the web or strip is released by the roller Q moving onto a position
shewn by dotted lines Figure 1, the pulling off lever P having now moved into the
position shewn by dotted lines and left a sufficient length of paper hanging loose
from the roll (as in dotted lines) so that the web or strip may be drawn upward
between the chase or form X and the pad W upon the back of the machine frame;
the swinging frame F with the inking rollers L L' having been moved by the
oscillation of the frame A into the position shewn by dotted lines Figure 1, so as
to pass over and ink the "chase" or "form" for the next impression.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I desire it to be understood
that I make no claim to a machine for making paper bags but what I do
claim is :-
First. The combination with a paper bag making machine of printing mechanism
which will cause a name or device to be printed upon the web or strip of paper,
before it passes onto the machine to be made into a bag substantially as described
and in one form illustrated.
Second. In combination with printing mechanism for the purpose above stated
attached to a paper bag making machine, mechanism by which the web or strip of
paper is arrested during the printing process to prevent the paper being torn or
the impression being slurred substantially as described and in one form
illustrated.
Third. The printing mechanism acting automatically and simultaneously with
the bag making process by which a "form" or "chase" is caused to be inked and
the impression imparted to the web or strip of paper which is arrested whilst being
printed, consisting of the various parts combined, constructed and operating
substantially as described and shewn by the drawings.
Dated this 8th day of January 1891.
T. J. DANSON,
By L. W., per F. B