Improvements in Apparatus for Making Paper Bags and the like.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Making Paper Bags and the like.
We, JOHN MACINTYRE, Writer, 175, Hope Street, and MALCOLM MACINTYRE,
Stationer, 384, Allison Street, Crosshill, both in the City of Glasgow, do hereby
declare the nature of this invention to be as follows:-
This invention has for its object the provision of simple and efficient means for
the manufacture of paper bags whereby said bags may be made more expeditiously
than heretofore.
The apparatus consists of a flat metal or other plate which forms the ground
plate and which is preferably secured to a table, both plate and table being pro-
vided with openings for a purpose hereinafter described.
The ground plate has hinged to it two plates of any desired length and breadth,
placed equidistant from the centre line of the ground plate, and adapted to turn
upon their hinges towards and from each other during the bag-making opera-
tions, the breadth of each plate being such that their inner edges do not meet
when the plates are folded over. Directly upon the centre line of the ground
plate a tongue of greater length than the hinged plates is formed or fitted, this
tongue being secured only at its lower end so as to leave a space between itself
and the ground plate extending from the free end almost to the fixed end. A
third hinged plate of a breadth equal to the breadth of the tongue piece is pro-
vided and is hinged at right angles to the previously mentioned hinged plates
This latter hinged plate
and in proximity to the fixed end of the tongue.
extends above to the height of the side plates and has a fourth plate of rectan-
gular or other form hinged to it by a narrow neck equal in breadth to the space
between the two side plates when closed, these two plates being together equal in
length to the length of the tongue formed on or secured to the ground plate.
The action of the apparatus in the production of paper bags is as follows:-
A piece of paper of the requisite size and breadth is inserted between the ground
plate and tongue and brought close to the bottom of the tongue. The side plates
are then turned over by hand, or by means of cords passing through the ground
plate and table and actuated by a treadle, to fold the ends of the paper towards
the centre of the ground plate. The paper is now turned back by hand upon the
hinged side plates and the bottom hinged plate brought over the ends of the
paper which are finally turned over this latter plate. The ends of the paper over-
lap and adhere one of its ends having been previously gummed for that purpose.
The plate pivoted at the upper end of the third hinged plate is now turned back
and carries with it that portion of the paper which extends beyond the tongue
and bottom plate and over the side plates, the ends of the paper being thereafter
folded over upon the last mentioned hinged plate and that portion of the tongue

page_text: which is now exposed. The end which has been previously gummed being made
to overlap the ungummed end.
Dated this 29th day of June 1898.
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents, 62, Saint Vincent Street, Glasgow,
Agent for the Applicants.
Improvements in Apparatus for Making Paper Bags and the like.
We, JOHN MACINTYRE, Writer, 175, Hope Street, and MALCOLM MACINTYRE,
Stationer, 384, Allison Street, Crosshill, both in the City of Glasgow, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:—
This invention has for its object the provision of simple and efficient means for
the manufacture of paper bags whereby said bags may be made more expeditiously
than heretofore.
The apparatus consists of a flat metal or other plate which forms the ground
plate and which is preferably secured to a table, both plate and table being pro-
vided with openings for a purpose hereinafter described.
a
The invention is illustrated by the accompanying drawings, Figure 1 being
plan of the apparatus in its open position ready for receiving the requisite piece
of paper, Figure 2 an end elevation and Figure 3 a longitudinal section on
the liner. Figure 4 is a view similar to Figure 1, and Figure 5 a section on the
line yy, showing the apparatus in its closed position, i.e., when the sides of the
bag are formed and closed together. Figures 6 and 7 are longitudinal section
and end view of the bag as manufactured by the apparatus hereinafter described,
and Figure 8 is a diagram shewing the method of connecting the operating cords
when such are employed.
The ground plate A has hinged to it two plates B of any, desired length and
breadth, placed equidistant from the centre line of the ground plate A, and
adapted to turn upon their hinges B₁ towards and from each other during the bag-
making operations, the breadth of each plate B being such that their inner edges
do not meet when the plates are folded over, as shewn in dotted lines, Figures 1
and 4. Directly upon the centre line of the ground plate A a tongue C of
greater length than the hinged plates B is formed or fitted, this tongue C being
secured only at its lower end C so as to leave a space between itself and the
ground plate A as shown at Figure 3, extending from the free end almost to
the fixed end C¹. A third hinged plate I) of a breadth equal to the breadth of the
tongue piece C is provided and is hinged at 11 at right angles to the previously
mentioned hinged plates B and in proximity to the fixed end C of the tongue C.
This latter hinged plate D extends above to the height of the side plates B and
has a fourth plate D² of rectangular or other form hinged to it at D3 by a vellum
parchment hinge, these two plates D, D³, being together equal in length to the
length of the tongue C formed on or secured to the ground plate A.
The action of the apparatus in the production of paper bags is as follows:-
A piece of paper E of the requisite size and breadth is inserted as shown in
dotted lines at Figs. 1 and 3 between the ground plate A and tongue C and
brought close to the bottom C¹ of the tongue, the paper E lying above the hinged

page_text: side plates B at this time. The side plates B are then turned over, as shown at
Figure 2, by hand, or by means of cords or chains F passing over pulleys F¹ and
through the ground plate A and table, and actuated by a treadle, the plates B
carrying with them the ends of the paper E and folding these ends
of the paper towards the centre of the ground plate A. The paper E
is now turned back as shown in dotted lines at Fig. 2, by hand,
upon the hinged side plates B, and the bottom hinged plate D brought
over the ends of the paper E either by hand or by means of a chain G passing
over a pulley G secured on the pivot of the bottom plate D the paper being finally
turned over this latter plate, as shewn at Fig. 5. The ends of the paper E overlap
as shewn at Fig. 5 and adhere, one of the ends having been previously gummed
for that purpose.
The plate Ds pivoted at the upper end of the third hinged
plate D is now turned back as shown at Fig. 4, and carries with it that portion of
the paper which extends beyond the tongue C and bottom plate D and over the
side plates B, the ends of the paper E being thereafter folded over upon the last
mentioned hinged plate D and that portion of the tongue C which is now
exposed, the end which has been previously gummed being made to overlap the
ungummed end.
When the side plates and bottom plate are actuated by cords or chains the cords
are connected together as at Fig. 8, so that they are all operated from the one
treadle, the connection permitting of the side plates turning slightly in advance
of the bottom plate. Weights W or springs are attached to the unconnected
ends F, G, of the cords or chains F and G respectively in order to bring the plates
back automatically to their original positions.
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. The improved apparatus for making paper bags and the like constructed
and arranged substantially as described.
2. In apparatus for making paper bags and the like the combination with a
tongue secured to a ground plate, of hinged plates arranged on either side of said
tongue, and adapted to be opened and closed by hand or otherwise, a plate hinged
at the bottom of the tongue and adapted to be turned over upon the side plates
when these lie upon the tongue and in conjunction with the plates already
mentioned to form the sides of the bag and a plate hinged to the last mentioned
plate adapted in conjunction with the upper end of the tongue to form the bottom
of the bag substantially as described.
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents, 62, Saint Vincent Street, Glasgow,
Agent for the Applicants.