Year: 1895

page_text: Date of Application, 20th May, 1895-Accepted, 128th Sept., 1895
We' CHARLES MORGAN, 'Envelope Manufacturer, and THOMAS BENJAMIN
BACON, Manager, both of 4, 6, and 8'Tabernacle Street in the County of London,
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 a special arrangement for working the slides in the
envelope folding box, also.to. a self adjusting bottom plate,. so. as to suit various
thicknesses of paper.
And in order that our said invention may be fully understood we will refer to the
drawings accompanying this Specification in which Fig. 1 represents in elevation a
portion of an envelope folding machine shewing the different parts constituting
our invention and. Figs. 2 to 8,inclusive represent parts of the machine hereinafter
referred.to.
The same letters denote the same parts in all' the views.
a shews the framing, of the machine. 6b shew fast and 'loose. pulleys for driving
the machine by power, these pulleys are mounted on the axle c, on which latter is
also keyed the pinion d, 'this pinion engages with 'the spur wheel, e keyed on the
axle f. On the inner side of the spur wheel e is fixed à cam g, the form of this cam
is shewn at Fig. 2. On the axle fis also keyed a disc h provided with a crank
pin this pin works in a cam k the form of which latter is shewn enlarged at Fig. 3.
This" cam k is. bolted to a rod 7, to the lower end of which is fixed a,plunger m on
to which is bolted a plate m¹. n is a flat plate forming the table: o is a frame
forming the folding box, this is furnished with a loose bottom p shewn dotted.'in
Fig. 1. The bottom prests on elastic balls q which in turn rest in the saucers r:
s shews a lever or rod, oue end of which is secured 'in the fork t by the pin
and the other end is fixed 'rigidly at v to the horizontal shaft'w working in the
support. To the shaft w is rigidly fixed a rod y pivotted on to the rod the
other end of which is pivotted. oni to the arm.', shewn.clearly at Fig. 8.in con-
nection, with the rods s,w, y, and z. The armis pivotted to, the frame a at
2 is a pin working in the cam g. At Figs. 5. and 6. are shewn detached-plans, of
the upper and under sides respectively of the folding box, fitted with the
slides 3.3. and 4. 4. 5 shews diagonal slots in the slides 3.13. 6. shews guides
fixed to the frame o to guide the slides 3.'3. and 4.4.
The method of working the slides 3. 3. and 4. 4. is shewn clearly at Fig. 6: in
which Fig. 7 shews a metal 'forked shaped casting sliding between the guides 8.8.
9. shew pins fixed in the casting 7, these pins pass through slots 10 (shewn dotted)
in the frame o. Fig. 4. shews a plan of the top of one of the pins 9. enlarged,
provided with anti-friction roller 11. 12 shews a cross bar fixed to the frame o, to the
projection 13 of which is pivotted a lever 14, one end of which is pivotted to
the sliding casting 7. and the other end to the bar 15, which latter is provided
with a cross-head 16. working between the guides 17. 17. The bar 15. is fixed
to one of the slides 4. by means of the pin 18. This pin works in a slot 10. in
the frame o. 19.. shews pins in the frame o for fixing., to the bed A' of 'the
machine.
Fig. 7. shews a detached plan view of the plunger m and plate m¹. This plunger

page_text: plate m' is divided diagonally so as to be in two parts, for the purpose of enlarging
the same slightly to suit the envelope blanks, as it is well known that the sizes
vary in cutting, according to the quality of the paper employed. This enlarge-
ment is effected by slackening the nuts 23 shewn at Figure 7, which secure the
plate m¹ to the plunger m, the bolt holes in the plunger being sufficiently large to
enable the two parts of the plate m¹ to be shifted as required.
The action of a machine constructed as above is as follows:-
The machine being put in action, by means of the fast pulley b, the pinion d
will be actuated, as also the spur-wheel e, and consequently the cam will be
rotated and the disc h, by means of the shaft f, by which means the pin i in the
disc h will actuate the cam k, which in its turn will raise the plunger m, and when
the pin reaches the point 20 in the cam k shewn at Fig. 3 (which takes place at
the top and bottom of each stroke) the plunger m will remain stationary during the
travel of the pin between the points 20 and 20: after which the plunger
plate m will descend and press upon the envelope blank on the plate n, and force
the envelope blank into the folding box o (through a hole provided in the plate n
for its passage) and hence on to the plate p. This latter will "give" sufficiently
(on account of its resting on the elastic balls q) to allow the paper of whatever
thickness to be folded over by the slides 3. 3. and 4. 4, shewn at Fig. 5, by the
action hereafter described.
Whilst the plunger is at rest, as above, at the bottom of the stroke, the cam g
actuates the arm 2, by means of the pin 2 (shewn clearly at Fig. 8). The arm
being pivotted to the frame a at 1 and to the rod z raises this rod slightly. The
effect of this is to push in and draw out the sliding casting 7, by means of the
rods, w and y which form together a bell-crank lever. The slides 3 3 and 4 4
are actuated by the sliding casting 7 in the following way:
As the casting 7 is pushed in, the pins 9, fixed to this sliding casting will move
forward in the slots 10 in the frame o, and in so doing will press on the sides
of the diagonal slots 5, in the slides 3. 3, and thus force both the latter inwards,
so as to crease the work. at the same time the pin 22 fixed to the casting 7, and
to the slide 4 (nearest to the fork t) will move this slide forwards, the pin 22
working in the slot 10. The other slide 4 is brought inwards, by means of the
levers 14 and 15: the lever 15 being pulled down by the oscillation of the
lever 14.
The slides are withdrawn by the reverse of the above action.
The drawing shews a machine for making bag-shaped envelopes, but it is of
course obvious that the form of the machine may be varied to suit any shape and
size of envelope.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. Envelope folding machines constructed and operated substantially. as herein-
before described and represented on the accompanying sheets of drawings.
2. In envelope folding machines: the slides 3. 3. actuated by means of pins
working in diagonal slots substantially as hereinbefore described, and represented
on the accompanying sheets of drawings at Figs. 5 and 6.
3. In envelope folding machines: the slides 44 actuated substantially as
herein before described and represented on the accompanying sheets of drawings
at Figs. 5 and 6.
4. In envelope folding machines: the employment of a cam for actuating the
slides 3. 3. and 4. 4. in combination with the sliding casting substantially as
herein before described and represented on the accompanying sheets of drawings
at Figs. 1 and 2.
5. In envelope folding machines: the plate p, resting on elastic balls for the
purpose set forth.

page_text: 6. In envelope folding machines: the plunger plate m¹ divided diagonally for
the purpose set forth.
Dated this Twentieth day of May 1895.
BROWNE & Co.,
9 Warwick Court, Gray's Inn, London, W.C...
Agents for the Applicants.