An Improved Machine for Folding and Glueing or Gumming Linen and other Material in the Manufacture of Envelopes and the like.
Year: 1895

page_text: Date of Application, 8th Aug., 1895
Complete Specification Left, 6th June, 1896-Accepted, 6th Aug., 1896
PROVISIONAL SPECIFICATION.
An Improved Machine for Folding and Glueing or Gumming
Linen and other Material in the Manufacture of Envelopes
and the like.
I GEORGE WILLSHIRE JOHNS of 9 Ambler Road in the Parish of Islington, in
the County of London, Mechanic, do hereby declare the nature of this invention to
be as follows:-
My invention consists of an improved device for folding longitudinally strips of
linen or other material with two folds, and to glue or gum one edge of the strip of
material at one operation.
My plan is to form a metal mould having both edges bevelled to an acute angle
from the upper surface to the shape to which the material is to be folded, and laid
horizontally, supported by iron frames.
To each bevelled side of the mould is fitted a steel blade of the length of the
mould, and which, sliding up and down, passes the upper surface of the mould at
the same angle as the bevel. This blade is operated by rods or levers from a shalt
or crank. From this shaft or crank is attached other rods or levers to operate
segment geared wheels and sliding geared attachments, assisted by a steel spring,
which connected with the presser-foot, raises and lowers the latter to the upper side
of the mould, thus preventing the material from slipping out of position when being
folded by the sliding blades. From this shaft or crank is attached other rods
or levers to operate a metal rule or rules of the length of the mould, placed in a
receptacle for the liquid glue or gum on a line with the upper surface of the
mould.
0
The principal feature in this improvement is the rapidity and accuracy with
which strips of linen or other material can be folded, and one edge gummed
or glued, for making hollow coverings, envelopes and the like.
Dated this 6th day of August 1895.
GEORGE WILLSHIRE JOHNS.
COMPLETE SPECIFICATION.
An Improved Machine for Folding and Glueing or Gumming
Linen and other Material in the Manufacture of Envelopes
and the like.
I, GEORGE WILLSHIRE JOHNS. of 9 Ambler Road, Finsbury Park, in the
Parish of Islington, in the County of London, Blind Manufacturer, 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 consists of an improved device for folding longitudinally and at an
acute angle strips of linen or other material, with two folds, and to glue or gum one
edge of the strip of material at one operation.

page_text: My plan is to form a mould of metal or other material having both edges
bevelled to an acute angle from the upper surface to the shape to which the
material is to be folded, and laid horizontally, supported by a framework of metal
or other material. To each hevelled side of the mould is fitted a blade of metal or
other material of the length of the mould. These blades slide up and down on
supports by means of metal clips, the supports being attached to a framework
running the length of the mould and above it, and on a plane with the bevel of the
mould. The blades, operated by rods or levers from a shaft or crank pass
the upper surface of the mould at the same angle as the bevel. From the shaft or
crank are attached other rods or levers to operate segment-geared attachments.
I may however use sliding attachments instead, within each attachment is placed a
steel spring which assists it. to bring down a presser foot on the upper
surface of the mould. The sides of the presser foot are at an obtuse angle with its
under surface and the bevelled sides of the mould being at an acute angle with its
own upper surface, the sides of the presser foot when brought down by the sliding
or geared attachments are on a plane with the sides of the mould. The material to
be folded is placed across the top of the mould with its edges at any required
distance over the edges of the mould. When the presser foot is brought down it
holds the material firmly, assisted by the pressure of the springs, whilst the sliding
blades make the required fold by passing over the material at the point where the
presser foot and mould meet. Parrallel to the mould and on a plane with its upper
surface a receptacle or box for gum or glue is placed the length of the mould and
at any required distance from it, having within it a metal rule or rules its entire
length. When the presser foot is down upon the mould a lever from the sliding
attachment raises the rule or rules which gums the edge of the material placed
over it.
In order to ensure the perfect gumming of the material a flap operated
by a lever or other means falls over it to prevent it from rising while the metal
rule (or rules) gums its edge. In the space between the mould and the gum
receptacle I may place a metal blade the length of the mould operated by segment
arms attached to a pivot bar fixed at a convenient distance from the opposite side
of the mould, & which rising with the presser foot throws the material over the
mould onto a shelf prepared to receive it.
The principal feature in this improvement is the rapidity and accuracy with
which strips of linen or other material can be folded at an acute angle and one
edge gummed or glued at one operation, for making coverings, envelopes and
the like.
Reference is to be had to the accompanying drawings forming part of this
specification, wherein
Figure 1 is a side section through the machine.
Figure 2 is an end section.
Figure 3 is a plan.
Figure 4 is an enlargement of part of Figure 2.
The same letters of reference indicate like parts in all the figures.
In Figure 1a is a mould; b is a press crfoot; 61 and 62 are parts of the presser
foot; c and c 1 are sliding arms which operate the presser foot b, and the sliding
blades fand f1; d and d 1 are sliding attachments which are preferably operated
direct from the arms c and c 1, or may be operated by geared wheels. These
sliding attachments are assisted to bring pressure on the presser foot by means of
the springs e and e which are placed inside the attachments and move with
them. The sliding blades and 1 folds the protruding edges of the material
to the angle of the bevelled side of the mould. When the sliding blades have
reached the lowest limit of their movement, the shape of the strip of material is
then the exact shape of the mould. When the sliding blades rise the presser foot
also rises and thus leaves the folded material free to be taken out; g and gl are
arms which connect the levers and 1 and the rule p, which is placed in the
receptacle for gum n. This rule rises with the downward movement of the sliding
blades, and gums one edge of the material immediately before the blades reach the

page_text: edge of the mould; hand h1 are supports for the sliding blades; i is a shaft fitted
with cranks and 1, and which operates the arms c and cl; 1 and 11 are pivot
jointed extensions of c and c 1.
In Figure 2 ; is a fastening to hold the mould in position; k and k 1 are pivot-
jointed parts of c and cl operating the sliding blades f and fl; is also a
pivot-jointed part of c; m is a lever attached to the pivot-joint u operating a metal
bladet for throwing the material off the mould when the presser foot b is raised.
The lever is operated from the presser foot b, by the pivot-jointed connection v.
In Figure 3 n is part of a receptacle for gum or glue; g and gl shows the
connection between the gumming rule p and the levers and r1; and v1 are
connections between the presser foot b and the levers 7 and r 1.
"
In Figure 4 a is a mould on which the material to be folded is placed with one
edge protruding to touch the stop o the presser foot 6 being brought down tight on a
by means of the arms c and c 1 in Figure 1 clamps the material fast whilst the
rule rises from the gum receptacle n, by means of the arms 9, and 1 in Figure 1
gums the edge of the material above against the stop o, the sliding blades fand f1
moving down at the same time folds the material to the shape of the mould. When
P
9
the presser foot ò rises the arms k and kl also rise and operate the lever m, its
quadrant arm bringing the rule t over the mould, which lifts the folded material off
the mould on to a receptacle for it; q is an edge of the gum receptacle n,
and cone
shaped to allow the material to clear the edge of the receptacle without being
smeared with superfluous glue.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is;
The herein described mode of folding at an acute angle and gumming strips
of linen or other material, at one operation for making coverings, envelopes and the
like, substantially as specified.
Dated this 6th day of June 1896.
GEORGE WILLSHIRE JOHNS.