Improvements in Web Printing Machines.
Year: 1898

page_text: Date of Application, 27th Apr., 1898
Complete Specification Left, 25th Jan., 1899-Accepted, 18th Mar.,
1899
Improvements in Web Printing Machines.
I, ROBERT CUMMING ANNAND, of Cornwallis Street, South Shields, in the County
f Durham, Printer's Engineer, do hereby declare the nature of this invention
o be as follows:-
My invention has reference to web printing machines and relates to the means
of controlling and unwinding the rolls of paper in such machines, and to the
means of pasting the webs together at the back margin to form newspapers,
periodicals and the like.
In order to secure the proper registering of the products of a multiple web
machine, it is necessary to regulate with great nicety the brakes which control
the several rolls of paper.
A change of paper or a different set of blankets put on the machine necessi-
tates one web being allowed to run in slack while another is held tight by the
brake in order to ensure correctness of the register of the webs when they come
to be associated together and cut into printed products.
Several systems of automatic unwinding or feeding of the rolls of paper have
been tried but these have not answered every requirement as they have hitherto
been made to unwind the rolls at an unvarying speed in relation to the speed of
the printing machine.
It has been found necessary to have a means of adjusting the speed of the
feed so that it can be slightly under the control of the attendant and that he can
vary the amount of feed at will while the machine is running.
Now according to my invention I employ an automatic-belt-feeding device
which is driven by means of a conical or slightly tapered roller or pulley. This
pulley is considerably longer than the breadth of the belt so that it allows of the
belt being shifted towards the smaller end of the pulley whereby the amount of
feed is reduced and of being shifted towards the larger end whereby the feed
is increased. The tendency of the belt is to work to the larger end and to
counteract this the pulley that carries the other end of the belt is made conical
in the same degree as the one that drives the belt and is set with its smaller end
opposite the larger end of the driving cone pulley. A suitable device such for
example as a shifting fork worked by a screw and hand wheel is employed to
move the belt up or down the conical pulley and thus increase or diminish the
amount of feed.
Pasting devices as hitherto made for web printing machines have generally
5 consisted of a paste trough and a revolving disc placed in the top of the trough
so as to carry round a quantity of paste upon the edge of the disc and deposit it
A scraper is provided to regulate the amount
on the moving web in the machine.
of paste carried by the disc. There is a great tendency of the supply of paste
getting choked by small pieces of paper or lumps that gather in the paste. It
40 is also often required to paste a web of paper on its upper side and to effect this
the disc is arranged to work in the paste box at the side or partly underneath.
When this has to be done the ordinary construction of pasting device is no

page_text: suitable. When it is used in this manner it is impossible to prevent the paste
running out when the machine is stopped and causing damage to the products of
the machine.
According to my invention I employ a pasting device consisting of a disc
which has very shallow indentations or teeth in it. The stopper or scraper is
made sufficiently deep to touch the points of the teeth and at least two of them,
so that in whatever position the disc stops the paste is prevented from running
out at the opening where the disc is placed.
The depth of the teeth or indentations is such that they carry out sufficient
paste for the purpose and no more. The points of the teeth also act like a circular
saw in cutting out any obstruction that may get under the scraper and prevent
the supply of paste being stopped,
Dated this 27th day of Anril 1900
Improvements in Web Printing Machines.
I, ROBERT CUMMING ANNAND, of Cornwallis Street, South Shields, in the County
of Durham, Printer's Engineer, 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:-
-
My invention has reference to web printing machines and relates to the means
of controlling and unwinding the rolls of paper in such machines, and to the
means of pasting the webs together at the back margin to form newspapers,
periodicals and the like.
In order to secure the proper registering of the products of a multiple web
machine, it is necessary to regulate with great nicety the brakes which control
the several rolls of paper.
A change of paper or a different set of blankets put on the machine necessi-
tates one web being allowed to run in slack while another is held tight by the
brake in order to ensure correctness of the register of the webs when they come
to be associated together and cut into printed products.
Several systems of automatic unwinding or feeding of the rolls of paper have
been tried but these have not answered every requirement as they have hitherto
been made to unwind the rolls at an unvarying speed in relation to the speed of
the printing machine.
It has been found necessary to have a means of adjusting the speed of the
feed so that it can be slightly under the control of the attendant and that he can
vary the amount of feed at will while the machine is running.
Now according to my invention I employ an automatic belt-feeding device
which is driven by means of a conical or slightly tapered roller or pulley. This
pulley is considerably longer than the breadth of the belt so that it allows of the
belt being shifted towards the smaller end of the pulley whereby the amount of
feed is reduced and of being shifted towards the larger end whereby the feed
is increased. The tendency of the belt is to work to the larger end and to
counteract this the pulley that carries the other end of the belt is made conical
in the same degree as the one that drives the belt and is set with its smaller end
opposite the larger end of the driving cone pulley. A suitable device such for
example as a shifting fork worked by a screw and hand wheel is employed to
move the belt up or down the conical pulley and thus increase .or diminish the
amount of feed.

page_text: Pasting devices as hitherto made for web printing machines have generany
onsisted of a paste trough and a revolving disc placed in the top of the trough
o as to carry round a quantity of paste upon the edge of the disc and deposit it
A scraper is provided to regulate the amount
n the moving web in the machine.
f paste carried by the disc. There is a great tendency of the supply of paste
getting choked by small pieces of paper or lumps that gather in the paste. It
s also often required to paste a web of paper on its upper side and to effect this
he disc is arranged to work in the paste box at the side or partly underneath.
When this has to be done the ordinary construction of pasting device is not
suitable. When it is used in this manner it is impossible to prevent the paste
running out when the machine is stopped and causing damage to the products of
the machine.
According to my invention I employ a pasting device comprising a disc
which has very shallow indentations or teeth in it. The stopper or scraper is
made sufficiently deep to touch the points of the teeth and at least two of them,
so that in whatever position the disc stops the paste is prevented from running
out at the opening where the disc is placed.
The depth of the teeth or indentations is such that they carry out sufficient
The points of the teeth also act like a circular
paste for the purpose and no more.
saw in cutting out any obstruction that may get under the scraper and prevent
the supply of paste being stopped.
This invention is illustrated in the accompanying drawings in which:-
Figure 1 is a diagrammatic side elevation of a portion of a web-printing
machine showing my automatic belt feeding device, the first and second type and
impression cylinders and my improved pasting device;
Figure 2 is a plan view of the automatic belt feeding device shown separately,
and
Figure
3 is an end view of the device for shifting the belt.
Figure 4 is a sectional side elevation on a larger scale of the improved pasting
device, and
Figure 5 is a side elevation of part of the pasting wheel on a still larger scale.
In Figure 1, 1" is the roll of paper from which the web 1 is unrolled, the web
passes over suitable guide pulleys 2, 2 then between the first type and impres-
sion cylinders 3, 4 and thence between the second type and impression cylin-
ders 5, 6. The printed web then passes under a registering roller 7, and then
along the pathway of tapes 8, 9. The construction and arrangement of these
parts are well known. While the web is being carried along the pathway of
tapes it is subjected to the operation of the improved pasting device hereinafter
described.
:
The improved automatic belt feeding device (Figures 1, 2, 3) for controlling
and unwinding the web 1 from the roll of paper 1 consists of a belt 10 driven
from a tapered pulley 11 and passing round a guide pulley 12 of similar but
reverse taper journalled in a frame 13 which is pivotted to swing on the driving
shaft 14 of the pulley 11, so as to keep the belt 10 always in contact with the web
5 on the roll 1°. The pulleys 11 and 12 are made longer than the width of the
belt 10 and are made with a degree of taper or conicity adapted to give the range
of feed required between the limits of the travel of the belt 11 along the pulleys.
A handwheel 15 is fixed on a screwthreaded spindle 16 working in a nut 17
which is fixed to or forms part of a two armed support 17ª. Upon the arms
50 of this support are journalled two loose flanged guide pulleys 18, 18 arranged
to embrace the belt 10 with their flanged peripheries from either side.
By turning the handwheel 15 in one or the other direction, the belt 10 can
as required be shifted by means of the guide pulleys 18 towards the larger o
smaller ends of the pulley 11, with a corresponding increase or decrease in the
5 speed of the belt 10 and consequently in the feed of the web 1.
The shaft 14 is driven by suitable means, such for instance as shown by means
of bevel gear 19, intermediate shaft 20, and bevel gear 21 from the shaft of the

page_text: impression cylinder 6 at a velocity designed to produce, when the belt 10 is
say midway of the pulleys 11 and 12, a speed of feed of the web 1 suited to. the
normally obtaining conditions of working of the printing machine.
Should, however, it become necessary to vary the speed of feed of the web, by
reason of a change in the conditions of working, caused for instance by a change
of paper or by the use of a different set of blankets, the attendant is enabled by
suitably operating the handwheel 15 to at once adjust the speed of feed of: the
web in the required manner without disturbing in any way the operation of the
printing machine.
The improved pasting device (shown more clearly in Figures 4 and 5) com-
prises a disc 22 formed with very shallow indentations or teeth 22" on its peri-
phery and journalled to revolve with a portion of its periphery through a slot
formed in the side of a paste receptacle 23 carried on a standard 24 which is
fixed on a suitable part of the framing of the printing machine. All escape of
the paste from the receptacle 23 except at the teeth 22" of the disc or pasting
wheel 22, is prevented by means of an. adjustable spring-pressed stopper or
scraper 25 which is made to touch the points of the teeth 22 the stopper being
sufficiently deep to ensure its always touching at least two of the teeth, so that
in whatever position the disc stops, the paste is prevented from running out
at the opening where the disc is placed.
1
The depth of the teeth 22 is such that they carry out sufficient paste for the
purpose and no more. The points of the teeth are arranged to face the direction
of motion of the disc, so that they act like a circular saw in cutting out any
obstruction that may get under the scraper and prevent the supply of paste being
stopped.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what
I claim is;
1. In web printing machines, a belt-feeding device for controlling and unwind-
ing the web comprising conical speed changing rollers, round which the feeding
belt passes and suitable belt-shifting mechanism, for the purpose of varying the
speed of the belt and consequently the speed of the feed of the web, constructed,
arranged and operating substantially as hereinbefore described.
2. In web printing machines, an improved pasting device comprising a pasting
disc having shallow indentations or teeth on its periphery revolving in a paste
receptacle in combination with a scraper or stopper adapted to touch at least
two of the points of the teeth, arranged and operating substantially as herein-
before described.
Dated : 09.1 1
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London, Chartered Patent Agents.