Improvements in Machinery for Automatically Pasting and Folding Over the Bottoms of Paper Bags.
Year: 1899

page_text: Date of Application, 6th Feb., 1899-Accepted, 1st Apr., 1899
COMPLETE SPECIFICATION.
Improvements in Machinery for Automatically Pasting and Folding
Over the Bottoms of Paper Bags.
We, WILLIAM DICKIE and WILLIAM INCLIS, of Couper Place, North Wallace
Street, Glasgow, Wholesale Stationers and Printers, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:-
This invention has for its object the provision of improved machinery whereby
the bottoms of paper bags, especially those. known as satchel bags," can be
pasted automatically.
The bags, ready to be pasted, are fed to the machine by hand or by machinery
and are first pasted, then the triangular shaped flaps at the bottom of the bag are
folded over, then such folded over flaps are pressed down so that they may adhere
in place, and finally the bag complete is delivered at the back of the machine.
Before the bag is delivered it may be dried by means or one or more heated rollers.
And in order that our said invention may be properly understood we have here-
unto appended three explanatory sheets of drawings, whereon,
Fig. 1 is a side elevation of the machine.
Fig. 2 is a plan of the machine.
Fig. 3 is a front or end view drawn to an enlarged scale.
Fig. 4 is a half section taken on the line A, A Fig. 1. This view is also drawn to
an enlarged scale.
Fig. 5 is a part longitudinal section taken on the line B, B, Fig. 2.
Fig. 6 is a part plan, corresponding with Fig. 5, but with the upper mechanism
removed. Figs. 5 and 6 are drawn to an enlarged scale.
Figs. 7 and 8, are views of the flap folding mechanism.
Figs. 9 and 10 are, respectively, side and plan views of one of the paste vessels.
Fig. 11 is a view of the endless carrying bands.
Fig. 12 is a section taken on the linear Fig. 6.
Fig. 13 is a detail view.
rig. 14 is a plan and side view of a satchel bag as it appears before the bottom
flaps are pasted down.
Fig. 15 shows a series of views of the bag as it appears at different stages in
the pasting and finishing operation.
Figs. 16 and 17 are detail views.
Referring to the drawings whereon the same reference numerals wherever"
repeated indicate the same parts.
1 is the frame of the machine; 2,2" is the table or top of the machine; 3, 3, .are
the paste vessels; 4 is a feed and flattening roller on the shaft 4 which is rotated
by a band or cord 4" from the shaft 60; 5 is an endless band, preferably made of
felt or such like material, which runs round the rollers 6, 7, the latter of which
is driven by means of a rope 8 from the pulley 9 on the main driving.shaft 10;
11 is a second endless band arranged below the first one and which passes round
the rollers 12, 13, the latter of which is driven by a crossed band 14 from the
D 031

page_text: pulley 15 on the spindle of the roller 7; 16 are weight or pressure rollers which
bear on the under part of the band 5; 17 is also a pressure roller; 18 is an end-
less carrying band, preferably made of rubber, which is arranged so as to run
vertically round the pulley 19 and the guide rollers 20, 21, carried by the part 2
of the table; 22, 22, are a series of small vertical rollers (see also Fig. 6) arranged
in the table at one side of the passage for the bag and which bear against the
band 18 and hold it in position; 23 is a similar endless band to the band 18 which
runs round the pulley 24 and the guide pulleys 25, 26, 27, 27, are a series of
small vertical rollers (see also Figs. 5 and 6) arranged in the table and which per-
form a similar function to the rollers 22; 28 is a transfer cone pulley or wheel
carried by the vertical shaft 29 which shaft also carries the pulley 24; 30 is an end-
less rope by which the shaft 29 is driven from the pulley 31 on the driving shaft 10
(see also Figs. 3 and 4); 32 is an endless rope by which the vertical shaft 33 carry-
ing the pulley 19 is driven from the pulley 34 on the driving shaft 10; 35 is a
horizontal bearing bracket, secured to the table 2, for the upper end of the
shaft 29; 36 is a star wheel which is carried by the arm 37 of the table and which
is revolved by a narrow endless conveying band or tape 38 passing round the
roller 13; this tape 38 runs from the wheel 36 up to and over the roller 12 (see
also Figs. 5 and 6); 39 is another narrow endless tape, which passes round the
roller 13 and the rollers 40 and 41. This tape 39, which is a conveying tape,
runs under the series of small horizontal conveying rollers 42, which are carried
in a frame 43 held in place by the arms 44 of the plate 45. There may be a
third endless tape 38" arranged between the other tapes and which may pass round
the roller 13, the wheel 36 and up and over the roller 12. The arrangement of
the three tapes is also shown at Figs. 5, 6, 12 and 13. 46, Figs. 1 and 5 are tin
guide sheets fitted vertically in the frame of the machine and close beside one
another and between which the part of the bag passes. 47, 47, are gates or
guides for the bag when being fed to the machine. The passage way 48, between
the gates, receives the part of the bag. 49, 49, are plate springs of an
(see also Fig. 13) and which are slightly bent as shown at Figs. 4 and 13.
of these springs 49 is arranged, just below each paste roller 59 and at each side of
the tongue 51. 50 is a cross plate to which the flat guide tongue 51 is attached
at right angles. The end of the guide tongue has a curved recess 52 cut in it as
shown at Figs. 6 and 16.
shape
One
The pasting mechanism consists of a frame 53 (see also Figs. 3 and 4) which is
fitted upon the table 2. Carried by this frame are four cross bars 54 to which the
two cylindrical paste vessels 3 are removably clamped. Each paste vessel has in
it a central vertical feeding shaft 55 provided with a series of propelling blades 56
which, as the shaft 55 revolves, propels or forces the paste, which is filled into
each cylinder, downwards to a slot 57 (Figs. 9 and 10) at the downwardly pro-
jecting curved bottom part 58. The paste is forced out through the slot in a thin
stream on to the paste roller 59, two of which are provided, one for each cylinder.
As will be seen at Figs. 4 and 13 the paste rollers are made with raised edges for
the purpose of preventing the paste escaping sideways from the rollers. Each
roller is clamped on to the roller shaft 60 by means of a bush or collar GS which
has a split extension screwed externally and provided with a tighting nut 61.
The shaft 60 is revolved by a rope 62 from the driving shaft 10. The feeding
shaft 55 of each paste vessel is actuated by means of bevel gear 63 from a shaft G4
which is driven by the rope 65 from the main driving shaft. In order that the
feeding shafts may be removed from the paste vessels for cleaning purposes they
are fitted in foot step bearings at their lower ends and their upper bearings are
connected to rings which are fitted removably, by bayonet point fixings, to the
outside of the paste vessels.
Attached to each paste vessel at the back side is a paste scraper and collector 66.
This collector consists of a receptacle provided with a slotted opening at 67 the
upper edge of which opening rests against the edge of the paste roller and scrapes
the paste therefrom. If so desired a similar device may be fitted in front of

page_text: each paste vessel for the purpose of regulating the thickness of the paste film on
the paste roller. In this case the receptacle is held at a certain distance from
the surface of the roller and so that the lower edge of its slotted opening will
catch and remove any superfluous paste beyond a certain thickness.
The flaps of the bag bottom after being pasted are folded over by the mechanism
shown to an enlarged scale at Figs. 7 and 8 (Fig. 8 is an inverted plan view) which
consists of four rollers 70, 71, 72, 73 having curved peripheries. The rollers 70
and 71 are horizontal whilst the rollers 72 and 73 are vertical. The horizontal
rollers are carried on spindles 74, 74 and are revolved by means of bevel gears 75, 75,
driven by horizontal shafts 76, 76, which latter are driven by ropes 77 from the
pulleys 78 of the driving shaft 10. The vertical rollers are carried on
spindles 79, 79, and are revolved by spur gearing 80, 80, from the shafts 76. The
rollers 70 to 73 are carried along with their mechanism by plates 81 secured to
the table of the machine.
82, 82 (Figs. and 6) are flat metal rails laid on the table at each side of the
passage way between the bands 18 and 23.
The frames carrying the rollers 20, 25 are adjustably secured to the corners of
the table 2 so that the bands 18, 23, can be stretched from time to time as required.
The shaft 10 of the machine may be driven by a handle 83 as shown at Fig. 2 or
it may be driven by power.
The number of pressure rollers 16 may be increased if so desired.
The roller 6 may be the same size as the roller 7 as shown at Fig. 11 or it may
be smaller as shown at Figs. 1 and 2. It may be provided with end flanges.
The modus operandi is as follows:-
Each bag already properly made as shown at Fig. 14 and ready to have the
flaps 9, 9, of the bottom h bent over and pasted down into the position indicated
in dotted lines at g', g' (Fig. 14) is fed through the vertical gateway 48, so that
its body i will pass vertically between the bands 18 and 23 whilst its bottom, spread
out flat, as shown at Fig. 14 and at a Fig. 15, will rest on top of the flat metal
guide rails 62, 82, of the table. The part of the bag being grasped between the
travelling bands 18, 23, the bag is carried forward under the roller 4 which flattens
out the bottom of the bag which latter is carried under the cross piece 50 and
tongue 51. This tongue is only of such width as to cover the bottom part h of
the bag and not the flaps g, g, which are left free. The bag is then travelled for-
ward with its flaps g spread out flat until it comes to the springs 49, 49, which
press up these flaps against the under sides of the paste rollers 59, 59, which latter
apply a thin layer or coating of paste to the upper side of each flap. Thereafter
the bag is carried forward until the flaps are caught by the vertical rollers 72, 73,
and bent upwards into the positions shown at 6 Fig. 15 when they are almost
immediately afterwards folded over the tongue 51 into the form shown at c Fig. 15,
by the horizontal rollers 70, 71; thereafter the endless band 5 bears upon the bag
bottom and the roller 6 presses down the folded over flaps g on to the bottom part h
of the bag (see d Fig. 15) and this pressing operation is completed by the pressure
roller 17. The bag with its flaps, g, now pasted down on top of the part of the
bottom travels along until it is caught at one side by the tape 39 and held between
it and the band 5; the rollers 42 help to retain the bag in place as it travels
along. Whilst the bag is being thus traversed its part i is caught by the cone 28
and bent over at an angle to the bottom as shown at e Fig. 15 and when the part ¿
reaches the star wheel 38 it is caught thereby and thrown on to the inclined parts
of the tapes 38 and 38", (see Fig. 17) and by them is bent into a horizontal or
nearly horizontal position (see f Fig. 15) and at the same time carried forward to
the conveying band 11. Thereafter the bag is pressed flat, into the form shown
at & Fig. 15, between the hands 5, 11, and under the action of the pressure rollers 16.
Finally the bag is delivered at the back of the machine in the form shown at k
Fig. 15, ready for packing into small compass.
The rollers 16 not only flatten the bag but press down the flaps g so as to cause
them to firmly adhere in position.

page_text: If so desired the rollers 7, 13, (or 7 only) may be heated so as to dry the pasted
parts before the bag drops out of the machine."
Instead of a propeller 55, a screw, or piston, or equivalent arrangement may be
used for forcing the paste out of the paste vessels.
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 consider novel and desire to claim is:-
1. The mechanism for automatically pasting the flaps (g) of the bottom of the
bag, substantially as hereinbefore described with reference to the drawings annexed.
2. The mechanism for folding over the flaps (4) of the bottom of the bag after
they have been pasted, substantially as hereinbefore described with ieference to the
drawings annexed.
3. The mechanism for bending over the part i of the bag from the vertical to the
horizontal position, substantially as herein before described with reference to the
drawings annexed.
4. The general arrangement and combination of parts of the machine, sub-
stantially as herein before described and shown on the drawings annexed.
Dated this 4th
1000
H. D. FITZPATRICK,
100, Wellington Street, Glasgow, Agent.
H. D. FITZPATRICK,
100, Wellington Street, Glasgow, Agent.