Improvements in and relating to Apparatus for Printing Faper Bags.
Year: 1890

page_text: Date of Application, 22nd Aug., 1850
Complete Specification Left, 22nd June, 1891-Accepted, 25th July, 1891
TRUVIDIONAL SPECIFICATION.
Improvements in and relating to Apparatus for Printing
Faper Bags.
We, JOHN BARON, of the firm of Messrs. Bibby and Baron, Limited, Newtown
Mill, Burnley, in the County of Lancaster, Paper Bag Manufacturer, and JOHN
THOMAS BIBBY Senr., Manager to the said firm, do hereby declare the nature of
this invention to be as follows:-
This invention relates more particularly to paper bag machinery of that class,
through which the paper to be formed into bags passes continuously and
uninterruptedly.
The improvements consist essentially in applying or combining with the driving
gear of a type cylinder or roller a variable motion, adjustably arranged to cause
the same roller to complete one revolution for each bag length of whatever size.
For this purpose, we employ a wheel having internal and external teeth at its
periphery, and which is mounted loosely on the shaft of the type roller; and to the
same shaft is fixed another wheel of a lesser diameter, to form an annular space
between the two. In the annular space rolls another wheel, which is centred on a
vibrating lever, and gears or measures with the teeth of the fixed and loose wheels
on the shaft of the type or similar roller.
The axes of the several gear wheels revolve round a common centre, forming a
kind of epicyclic train. The lever above mentioned vibrates upon the shaft of the
type roller, and is actuated by a suitably shaped cam through the medium of a
lever; the former is fixed to the driving shaft, which carries a toothed wheel,
gearing with the external teeth, on the periphery of the loose wheel on the type
roller; whilst the latter is adjustably connected by a link to a vibrating lever, to
vary the increase or loss of motion of the type roller, in accordance with the bag
length to be printed.
To occupy the least possible room or space, and to render the apparatus more
compact, the type roller and its inking accessories are enclosed within the framing
of the bag machine.
We would observe that the adjustable variable motion is also applicable to a
type roller having around its periphery two or even more distinct sets of type
equally disposed and following each other in succession, so as to present one set of
type for each bag length; and to allow for loss or increase of motion by the
variable gearing, sufficient space will be required between each set of type.
Dated this 21st day of August 1800.
THOS. RICHMOND,
Agent.
COMPLETE SPECIFICATION.
Improvements in and relating to Apparatus for Printing
Paper Bags.
We, JOHN BARON and JOHN THOMAS BIBBY Senr., of the firm of Messrs.
Bibby and Baron Limited, Newtown Mills,. Burnley, in the County of Lancaster,
Paper Bag Manufacturers, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This invention relates more particularly to paper bag machinery of that class
through which the paper to be formed into bags pass continuously and
uninterruptedly.

page_text: The improvements consist essentially in applying or combining with the driving
gear of a type cylinder or roller a variable motion adjustably arranged to cause the
said roller to complete one revolution for each bag length of whatever size. For
this purpose, we employ a wheel, having internal and external teeth at its periphery,
and which is mounted loosely on a shaft of the type roller; and to the same shaft
is fixed another wheel of a lesser diameter to form an annular space between the
two. In the annular space rolls another wheel which is centered on a vibrating
lever and gears or meshes with the teeth of the fixed and loose wheels, on the shaft
of the type or similar roller.
The lever above mentioned vibrates upon the shaft of the type roller, and is
actuated by a suitably shaped cam through the medium of a lever. The former is
fixed to the driving shaft, which causes a toothed wheel, gearing with the external
teeth on the periphery of the loose wheel on the type roller; whilst the latter is
adjustably connected by a link to the vibrating lever, to vary the increase or loss
of motion of the type roller in accordance with the bag length to be printed.
We would observe that the adjustable variable motion is also applicable to a
type roller, having around its periphery two, or even more distinct sets of type
equally disposed and following each other in succession, so as to present one set of
type for each bag length.
In the accompanying drawings,
Fig. 1 represents a side elevation and Fig. 2 a plan of an apparatus for printing
paper adapted more particularly to paper bag machinery of that class, through
which the paper to be printed and formed into bags passes continuously and
uninterruptedly.
A and B represent respectively the type and pressure cylinders of our improved
printing apparatus. These cylinders are mounted parallel to each other in the
framework of a paper-bag machine, or a separate framing C situated in close
proximity to it. The cylinder A is adjustable in its bearings by the set-screws A
and A², so that the requisite pressure may be applied to the sheet or continuous
web of paper D to be printed in passing in a continuous manner between the said
cylinders on its way to the folding device of the bag machine to be formed
into bags.
The cylinder A completes one revolution for each bag length, and instead of
having a type or stereotype surface around the whole of its periphery, such surface
only occupies a portion of the cylinder and projects from it concentrically.
The said cylinder therefore will only act or print at the time the type or
projecting part A is passing or is in contact with the pressure cylinder B. During
the rest of its revolution it exerts no action whatever upon the pressure cylinder,
over which the paper D now passes freely, whilst the type cylinder completes the
rest of its revolution. This type or stereotype cylinder, over the surface of which
at each revolution is distributed automatically a smear or film of printer's ink, in
any ordinary and well known manner, transfers the smear or film of ink to the paper
within each bag length, producing thereon an inscription, permanent mark or other
device in accordance with that formed on the type or stereotype surface A³ of the
cylinder A.
It will, therefore, be obvious, that as the diameter of the cylinder A is of one
determined size, and the traverse of the paper in relation to the cutting or
severance varies for different lengths of bags it naturally follows that to perform
the proper functions of printing the inscription or the like on such bags the motion
could not possibly be regular in its action; but would require to be varied to adapt
it to bags of different lengths. A variable motion perfectly novel in relation to the
bag printing machinery is therefore employed, and connected by a suitable system
of gear wheels to the arbor of one of the cutting rolls or other like revolving part
of the bag machine. The motion is adjustably arranged that the stereotype
cylinder may perform one revolution for each size of bag required, and also bring
the inscription or the like in proper relation with it.
We will now describe the mechanism, and varied actions of this peculiar motion,

page_text: which constitutes an essential feature of this invention. To the arbor of the
cylinder A is fixed tooth wheel E, behind which and on the same arbor is loosely
mounted wheel F having teeth both internally and externally around its periphery.
The fixed wheel is of less diameter than that of the loose wheel, so as to form an
annular space between the two, in which revolves an intermediate wheel G on a
stud fixed to a radius arm H vibrating on the arbor of the cylinder A.
This vibrating arm H is connected by the link I to lever J, moving on stud K
fixed to the framing C, and is acted upon by cam L secured to driving wheel M in
gear with the external teeth of the loose wheel F.
The adjustability of the motion is determined by the link I being fixed in the
slot at a point nearer to or further from the centre or fulcrum of the radius arm H,
to cause more or less motion to the said arm, so as to retard or accelerate the
stereotype surface A³ in passing the pressure cylinder B, to print, in conformity
with the speed or travel of the paper passing between the cylinders A and B.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
In combination with a paper bag machine, a printing device, comprising type and
pressure cylinders A and B, wheels E and F, intermediate wheel G radius arm H
and cam L, operating together substantially as described and illustrated.
Dated 20th day of June 1891.
THOS. RICHMOND,
Agent.