Improvements in and relating to the Printing or Stamping of Colours on Sacks, Bags and the like.
Year: 1896

page_text: Date of Application, 19th Sep., 1896
Complete Specification Left, 10th Dec, 1896--Accepted, 6th Feb., 1897
PROVISI
ION.
Improvements in and relating to the Printing or Stamping of Colours
on Sacks, Bags and the like.
We, JOHN GARVIE KINMOND, Manager, and DAVID PEEBLES KIDD, Engineer to the
Trades Lane Calendering Company Limited, of Trades Lane, Dundee, and DAVID
JOHNSTONE MACDONALD, of South St. Roque's Works, Machine Maker, all of Dundee,
in the County of Forfar, Scotland, do hereby declare the nature of this invention to
be as follows:-
This invention has for its object to stamp or print sacks or bags and the like with
two or more colours, such colours being applied the one after the other at one
operation.
In carrying our improvements into effect, two or more printing cylinders are
employed, one for each colour required, and the stamps or devices are arranged and
secured on the circumference or outer surface of the cylinders.
The stamps on the cylinders are supplied or coated with the printing ink or
colours by an arrangement of rollers working into a colour trough. The sacks or
bags are carried by a travelling band under the first rotating cylinder and are stamped
while so travelling by the stamps or devices thereon, the bag and the travelling band
passing between the cylinder and an under roller, the necessary pressure being
obtained by the weight of the cylinder and an arrangement of springs or spring or
weighted levers or like mechanical device.
After the sack or bag is stamped at the first cylinder it is carried by the travelling
band between pressing rollers, the under roller being a plain cylinder while the upper
roller consists of a shaft upon which are two or more adjustable discs. These rollers
are so arranged relatively to the adjacent cylinders that the front end of the bag is
caught by such rollers before the other end has left the first cylinder and its roller and
again that its front end is caught by the second cylinder and its roller before the rear
end has left such pressing rollers, and so on for other cylinders, thereby keeping the
bag in accurate register.
The cylinders are connected and geared together preferably by means of spur
wheels and the relation of one cylinder to the other may be roughly adjusted by
disconnecting this gear and resetting it and then by means of another device
accurately setting it so that the one colour of the stamp may be placed in its proper
position relative to the other or others. The device for accurately adjusting the one
cylinder relative to the other consists of a clutch keyed on the cylinder shaft, such
clutch loosely engaging with projections on the wheel by which the cylinder is driven.
Set screws preferably in the clutch hold such wheel rigidly and by adjusting these the

page_text: cylinder is turned slightly in the direction required. Friction plates or other
mechanical devices may be employed for the like purpose.
Clips, rollers, spiked chains or the like may be used instead of or along with the
aforesaid bands to convey the bags from the one cylinder to the other.
In another modification we may do away with the intermediate pressing rollers and
bring the cylinders so close together that the one end of a bag is caught by a printing
cylinder and its roller before the other end of same has been freed by the preceding
printing cylinder and its roller. The distance from centre to centre of the cylinders
may be adjusted by means of sliding bearings actuated by hand wheels and screws, or
by any other suitable device to attain the same end. As in the first modification, a
band or the like may be employed to convey the bag from the one cylinder to the
other, or the disengaged portion of the bag may be supported preferably by a fixed
board in its passage from one cylinder to the other. The colour troughs may be
placed in any suitable position relative to their respective cylinders.
Dried - 1041
1000
GEO. C. DOUGLAS & Co.,
41 Reform Street, Dundee.
Agents for Applicants.
Improvements in and relating to the Printing or Stamping of Colours
on Sacks, Bags and the like,
We, JOHN GARVIE KINMOND, Manager, and DAVID PEEBLES KIDD, Engineer to the
Trades Lane Calendering Company Limited, of Trades Lane, Dundee, and DAVID
JOHNSTONE MACDONALD, of South St. Roque's Works, Machine Maker, all of Dundee,
in the County of Forfar, Scotland, 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 has for its object to stamp or print sacks or bags and the like with
two or more colours, such colours being applied the one after the other at one
operation.
And in order that our said invention and the manner of performing or carrying the
same into effect or practice may be properly understood, we have hereunto appended
two explanatory sheets of drawings in which the same reference numerals are used to
indicate corresponding parts in all the figures where shown, that is to say:-
Figure 1. (Sheet 1). is a side elevation of one type of printing machine.
Figure 2 (Sheet 1). is an end elevation looking in the direction of the arrow A
(Figure 1).
Figure 3. (Sheet 1). is a plan of the machine.
Figure 4. (Sheet 2). is a longitudinal vertical section on B.B. (Figure 3).
Figure 5. (Sheet 2). is a longitudinal vertical section or B.B. (Figure 3). showing a
modified arrangement of printing rollers.
Figure 6. (Sheet 2). is an enlarged detail view of inking roller adjustment.
Figures 7. and 8. (Sheet 2). are respectively enlarged detail views of a side elevation
and a plan of the device for securing accurate register.
In carrying our improvements into effect, two or more printing cylinders 10. and 11.
are employed, one for each colour required, and the stamps or devices are arranged
and secured on the circumference or outer surface of the cylinders.
The stamps on the cylinders are supplied or coated with the printing ink or
colours 12. by an arrangement of rollers 13. 14. working into a colour trough 15. The
method of adjusting the roller 13. relative to the other 14. is more particularly shown

page_text: in Figure 6. where it may be observed it may be moved in three directions, the one
along the slot 15ª, the other up and down by means of the set screw 16. and the third
backwards and forwards by means of the set screws 17. The colour trough is held
against the roller 14. by the set screws 18. 19. are drip boxes employed to prevent
any colour from falling on the articles being treated. The After being fel into the
machine the sacks or bags are carried by a travelling band 20. under the first rotating
cylinder 10. and are stamped while so travelling by the stamps or devices thereon, the
bag and the travelling band passing between the cylinder and under roller 21, the
necessary pressure being obtained by the weight of the cylinder 10. and an arrange-
ment of springs or weighted levers, or like mechanical device. In the drawings I
have shown springs 22. employed.
After the sack or bag is stamped at the first cylinder it is carried by the travelling
band 20. between pressing rollers 23, the under roller being a plain cylinder while the
upper roller consists of a shaft 24. upon which are two or more adjustable discs. These
rollers are so arranged relatively to the adjacent cylinders 10. and 11. that the front
end of the bag is caught by such rollers 23. before the other end has left the first
cylinder 10. and its rollers 21, and again that its front end is caught by the second.
cylinder 11. and its roller 25. before the rear end has left such pressing rollers 23, and
so on for other cylinders, thereby keeping the bag in accurate register.
The cylinders are connected and geared together preferably by means of spur
wheels 26, and the relation of one cylinder to the other may be roughly adjusted by dis-
connecting this gear and resetting it, and then, by means of another device
accurately setting it so that the one colour of the stamp may be placed in its proper
position relative to the other or others. The device for accurately adjusting the one
cylinder relative to the other is illustrated more particularly by Figures 7, and 8. and
consists of a clutch 27, keyed on the cylinder shaft 28, such clutch loosely engaging
with projections 29. on the wheel by which the cylinder is driven. Set screws 30,
preferably in the clutch, hold such wheel rigidly and by adjusting these the cylinder
is turned slightly in the direction required. Friction plates or other like mechanical
devices may be employed for the like purpose. The cylinders may be adjusted
laterally and retained in position by the ruffs 31. and set screws 32.
Clips, rollers, spiked chains, or the like may be used instead of or along with the
aforesaid bands to convey the bags from the one cylinder to the other but these form
no part of our invention.
In another modification partly illustrated by Figure 5. we may do away with the
intermediate pressing rollers 23. and bring the cylinders 10. and 11. so close
together that the one end of a bag is caught by a printing cylinder and its
roller before the other end of same has been freed by the preceding printing cylinder
and its roller. The distance from centre to centre of the cylinders may be adjusted
by means of sliding bearings actuated by hand wheels and screws, or by any other
suitable device to attain the same end. As in the first modification, a band or
the like may be employed to convey the bag from the one cylinder to the other,
or the disengaged portion of the bag may be supported preferably by a fixed
board 33. in its passage from the one cylinder to the other. The colour troughs
may be placed in any suitable position relative to their respective cylinders.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what we
claim is
(1) In machines for printing or stamping sacks, bags and the like, the com-
bination and arrangement of parts substantially as hereinbefore described with
reference to Figures 1. 2. 3. 4. 6. 7. and 8. of the accompanying drawings.
(2) In machines for printing or stamping sacks, bags and the like, the combination
and arrangement of parts, substantially as herein before described with more particular
reference to Figure 5. of the accompanying drawings.
(3) In-machines-for-printing-or-stamping-sacks, bags-and-the-like and of the type
described, the-combination-and-arrangement-of the-device-as-hereinbefore-described
with-referense-more-particularly-to-Figure-Gr-of-the-nccompanying-drawings.

page_text: (3) (4) In machines for printing or stamping sacks, bags and the like and of the
type described, the combination and arrangement of the device as herein before
described with reference more particularly to Figures 7. and 8. of the accompanying
drawings.
.
1000
GEO. C. DOUGLAS & Co.,
41 Reform Street, Dundee.
Agents for Appllicant.