Year: 1898

page_text: Date of Application, 28th Apr., 1898
Complete Specification Left, 9th Dec., 1898-Accepted, 23rd Dec., 1898
I, JOHN ALEXANDER CAMERON, of 69, Jamieson Street, Govanhill, Glasgow,
Traveller, do hereby declare the nature of this invention to be as follows:-
This invention relates to machinery for making paper bags of the so called
satchel" type.
In carrying out my invention I fit in any suitable manner upon a table a metal
base plate of oblong shape and which may correspond to the size of the bag to be
manufactured. This plate has two wings hinged to it, one at each side, and which
are capable of being folded up or opened out by means of mechanism as herein-
after described. Secured in position at a slight distance above the base plate is a
bag former or templet which consists of a lower flat plate having an extended
end which is cut away at each side and is tapered at its extreme end, two vertical
plates which are hinged respectively to one edge of and at the middle (or a posi-
tion near the middle) of the lower plate, and an upper plate which is hinged, in a
similar manner to the lower plate, to the upper edges of the two vertical plates
aforesaid. This upper plate corresponds in shape to the lower plate but it differs
therefrom in so far that its end with the cut away parts is made in the form of a
hinged flap.
This bag former or templet is so made that it forms a rectangular chamber having
its four walls hinged together. The upper plate, which constitutes the roof of the
chamber, projects over at one side to an extent equal or about equal to the width
of the one wing of the base plate whilst the lower plate, which constitutes the floor
of the chamber, projects outwards at its opposite side to an extent equal or about
equal to the width of the other wing of the base plate.
The rectangular former is capable of being collapsed is such a manner that, when
collapsed, its upper plate will lie on top of its lower plate.
The mechanism for opening out and collapsing the bag former and for folding
up or opening out the wings of the base plate consists of a series of cog wheels, or
their equivalent, which are operated by treadle or other suitable mechanism.
The arrangement of mechanism I prefer is, first, a cog wheel whose shaft con-
stitutes a part of the hinge of the right hand wing of the base plate; second, a
larger cog wheel whose teeth mesh with the teeth of the first cog wheel and
whose shaft may constitute a part of the hinge of the right hand vertical hinged
plate of the bag former-this cog wheel may be operated by the treadle mechan-
ism; third, an idle wheel whose teeth mesh on the one hand with the teeth of
5 the second cog wheel and on the other hand with the teeth of a fourth cog wheel,
corresponding to the first cog wheel, and whose shaft constitutes a part of the
hinge of the left hand wing of the base plate. This mechanism is so arranged
and operated that the first and fourth wheels perform, a half revolution, back and
forward, whilst the second wheel performs but a quarter revolution back and for-
O ward. The motion of the first and fourth wheels opens and folds up the wings

page_text: whilst the motion of the second wheel opens up and collapses the bag former.
These motions are synchronous or substantially synchronous.
A spring arrangement is provided which retains the bag former in or brings it
back to the open position, whilst the movement of the treadle collapses the bag
former and folds up the side wings.
The flap at the end of the upper plate of the bag former can have a cam or spring
arrangenient for bringing it back to the horizontal position after being raised.
With this machine the paper sheet, after being properly pasted, is laid upon
the base plate and between it and the bag former, and, then, at one movement
of the treadle, the side wings are raised and the former is collapsed so as to form,
at one operation, the bellows sides of the bag. The free ends of the paper sheet
are thereafter folded down on top of the bag former and pasted together. The
bottom of the bag is made by the manipulation of the hinged flap of the upper
plate of the bag former.
Dated this 27th day of Anril 1898
Improvements in machinery for the manufacture of raper Bags.
1, JOHN ALEXANDER CAMERON, of 69, Jamieson Street, Govanhill, Glasgow,
Traveller, 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 to machinery for making paper bags of the so called
"satchel" type.
And in order that my said invention may be properly understood I have hereunto
appended two explanatory sheets of drawings, whereon,
Fig. 1 is an end view and Fig. 2 a plan of the apparatus with the parts in the
open position.
Fig. 3 is an end view and Fig. 4 a plan of the apparatus with the parts in the
closed position.
Fig. 5 is a cross section of the apparatus with the parts in the open position,
and Fig. 6 is a similar cross section with the parts in the closed position. These
Figs. 5 and 6, which are drawn full size, are taken, respectively, upon the lines A-A
of Fig. 2 and B-B of Fig. 4.
Figs. 7 and 8 are end and plan views of a slight modification.
On the drawings the same reference letters wherever repeated indicate the same
parts.
In carrying out my invention I fit in any suitable manner upon a table or
block a a metal base plate b of oblong shape and which may correspond to the size
of the bag to be manufactured. This plate has two wings c, d, hinged to it, one at
cach side, and which are capable of being folded up or opened out by means of
mechanism as hereinafter described. The table or block a may be recessed, for
the reception of the wings, as shown. Secured in position at a slight distance above
the base plate is a bag former or templet which consists of a lower flat plate e cor-
responding in shape with the base plate 6 with the exception of its end e¹ which
is tapered or pointed as shown, two plates f, g, which are hinged respectively at
one edge (f) of and at the middle (g¹) (or a position near the middle) of the lower
plate, and an upper plate h which is hinged, at f*, g², in a similar manner to the
lower plate, to the upper edges of the plates f, g, aforesaid. This upper plate

page_text: rresponds in shape to the lower piate e with the exception of its
hien is hinged to it and constitutes a hinged flap. This hinged nap with its
pered end forms no part of the present invention.
This bag former or templet is so made, as shown, that it forms a rectangular
hamber having its four walls hinged together. The upper plate h, which con-
titutes the top of the chamber, projects over at one side as shown clearly at Fig. 5,
o an extent equal or about equal to the width of the one wing d of the base plate
whilst the lower plate e, which constitutes the floor of the chamber, projects out-
vards at its opposite side, to an extent equal or about equal to the width of the
other wing c of the base plate.
The rectangular former is capable of being collapsed in such a manner that,
when collapsed, its upper plate h will, as shown at. Figs. 4 and 6, lie on top of its
lower plate e.
The mechanism for opening out and collapsing the bag former and for folding
up or opening out the wings of the base plate consists of a series of cog wheels, or
their equivalent, which are operated by treadle or other suitable mechanism.
The arrangement of mechanism I prefer to use consists, as shown at Figs. 1
to 6, of, first, a small cog wheel whose shaft or spindle constitutes a part of
the hinge of the right hand wing e of the base plate; second, a larger cog wheel j
some of whose teeth mesh with the teeth of the first cog wheel and whose shaft
may constitute a part of the hinge of the right hand hinged plate g of the bag
former; third, an idle wheel k whose teeth mesh, on the one hand, with the teeth
of the second cog wheel and, on the other hand, with the teeth of a fourth cog
wheel, t, corresponding to but larger than the first cog wheel i and whose shaft
constitutes a part of the hinge of the left hand wing of the base plate. The
wheel is operated by means of the hand lever m which is attached to it.
The motion of the first and fourth wheels, i, 1, opens and folds up the wings c, d,
whilst the motion of the second wheel j opens up and collapses the bag former.
To assist the action of the wings torsion springs n may be fitted on the shafts i¹, 1.
These springs would, on the one hand, be secured to the wings and, on the other,
to the bearings o of the shafts ¹, l.
The side wings c, d, are rigidly secured to and turn with the shafts ..
As will be seen, Fig. 3, the wheel j is made with a segmental extension which
is cut with teeth only on one half the length of the arc of such segment. These
5 teeth mesh with the teeth of the small wheel whilst the teeth mesh with
With this arrangement, when the former is being
the teeth of the idle wheel k.
opened out, the flap d is caused to open half way out before the flap c is actuated
whilst, on the other hand, when the bag former is being closed up, the flap c is
(on account of the relative sizes and arrangement of the different wheels closed
10 down before the flap. d is more than half closed. It will be thus seen that the
movements of the flaps c, d, are not synchronous. This is found to be advantageous
when folding the paper sheets into bag form.
45
If desired the plate g may be locked to the wheel j so as to turn with it by
means of a projecting jaw or such like on the latter.
With this machine the paper sheet, after being properly pasted, is laid upon the
base plate band between it and the bag former, and, then, at one movement of
the lever m, the side wings are closed and the former is collapsed so as to form,
at one operation, the bellows sides of the bag. The free ends of the paper sheet
are thereafter folded down on top of the bag former and pasted together. The
50 bottom of the bag is made by the manipulation of the hinged flap of the upper
plate of the bag former.
The dotted lines at Fig. 6 show a sheet of paper folded by the apparatus.
.In the arrangement Figs. 7 and 8 the apparatais is operated by treadle mechanism
of any well known and suitable construction. In this case chains p, q, or equiva
55 lent. pass over pulleys r, s, on the shafts,, and down to a ringt to which th
chain u from the treadle (not shown) is attached. Weights (or springs) ar
attached to the other ends of the chains. In this case the bag former and wing

page_text: are normally retained in the open position by the action of the weights (or
springs) and whenever the treadle is depressed the chain wheels r, s, and shafts i¹,,
are caused to turn so as to close the wings c, d, and collapse the bag former. In
this arrangement the wheels r, s, may be, as shown, of equal diameter so that both
wings c, d, may open and close synchronously.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I consider novel and desire to claim is: -
1. An apparatus for making paper bags having its parts constructed arranged
and combined together, substantially as herein before described with reference to
Figs. 1 to 6 of the drawings annexed.
2. The modification of the apparatus, substantially as hereinbefore described
with reference to Figs. 7 and 8 of the drawings annexed.
Dated this 8th day of December 1898
H. D. FITZPATRICK,
100, Wellington Street, Glasgow, Agent.