Year: 1895

page_text: Date of Application, 2nd Sept., 1895-Accepted, 9th Nov., 1895

page_text: Now in the latter must be produced a sucking current of air which is done by
means of a sucking pump 18 being driven from the disc 21 on shaft 2 by a bar 20
and connected to the pipe 12 by a leather pipe 17 so that by means of the sucking
current of air and the drilled through sponge a blank will be pickel up from the
stock when the pipe 12 is lowered.
Now from the sponge the blank is seized by the nipper Figure 3 and brought to
the folding apparatus. For this purpose in bridges 22 of the framing la a
shaft 23 is journaled carrying at its front end a lever 24 which is made to oscillate
in the following mauner. Into the fast pulley 3 is cut an excentric projection 27
that raises and loweres by means of a bolt 27 a a slide 26 which transmits its
motion by a bar 25 and a lever 28 to the shaft 23 and the lever 24 causing thus
the latter to oscillate. The lever 24 guided by a bar 29 carries at its head the
nipper the special construction of which will be best seen from Figure 12.
Upon the plate 30 bent rectangular to the lever 24 is journalled in bearings 31
a bar 32 which is fitted with a die 33 which is pressed by a spring 33 a against
the plate 30 and forms together with it the nipper. The nipper may be opened
and closed automatically at the ends of the stroke of the lever 24 by fixtures 37
and 38 on the table of the framing 1 a which are touched by a pawl 36 on a
spindle 35 that carries also a cam 34. Now it will be easy understood that when
the cam 34 is turned by the pawl 36 in one or onother direction the die 33 will be
raised or lowered and consequently the blank is seized and brought by the lever 24
upon the folding apparatus 40 where it is left free by the working of the
fixture 38.
On the folding apparatus the blank gets its proper situation by means of
angles 41 wires 42 and 43 with spring like action and oscillating fingers 44.
These are keyed on a spindle 45 which is made to swing about by a crank 46,
connecting rod 47 and lever 48 by the working of an excentric 49.
When the blank in such a manner is put upon the folding apparatus its lower
border must be provided with gluten which is done in the following manner
Figures 9 and 10.
To the closing box 50 of the folding apparatus is fixed a box 52 with a
funnel 51 for filling in the gluten. Into it plunges turnable with a spindle 53
a feeding angle 54 above which is arranged the pasting angle 55 corresponding
exactly in form and size with the feeding angle 54. Both angles are moved
against each other so that the feeding angle may provide the pasting angle with
gluten which of course is done before the laying down of the blank on the folding
apparatus has taken place.
The gluten taken up by the pasting angle is then put down to the border of the
blank as desired. For this purpose the motions of the angles must be so that the
upper is moved two times whilst the lower makes only one oscillation. This is
done by means of an excentric with two projections 59 which is connected to
angle 55 whose fulcrum forms the spindle 53 by a lever 38, connecting rod 57 and
crank 56 for the double motion. The single motion of the spindle 53 is
obtained by the crank and excentric gearing 60, 61, 62 and 63 Figures 2
and 4.
After the glueing process just described the blauk will be folded by the
following means.
The box 50 is provided with a rectangular hole corresponding to the size of the
envelope.
With this hole corresponds a stamp 64 which is casted to a lever 65 that,
having its fulcrum on the shaft 14 is made to fall down quickly and raise slowly
by means of an excentric 66 keyed to shaft 2, so that the stamp 64 entering the
box 50 takes with it the blank in a half folded state and puts it upon a plate 67,
which at the same time enters the folding apparatus from below. The plate 67 is
casted for this purpose to a lever 68 which has its fulcrum also on shaft 14 anl
is connected by a bolt 14 a with a counter lever 69 which is governed by au
excentric 70.

page_text: Now when the blank is applied to the plate 67 it will be perfectly folded by the
folding tools Figures 6-8 which approaching from four sides fold one border
after another of the blank and past the three lower ones together.
In a piece 72 screwed to the table 1 and surrounded by the box 50 is guided
a Ushaped flat iron piece 71 carrying opposite each other two sliders 75, 75 a.
Into these sliders are cut obtuse directed slots 7+ which are engaged with friction
rollers 73. Upon the slider 75 a lays a lead lever 76 which is connected to said
slider by a pin 77 and an obtuse slot 78.
When now the piece 71 is shifted forwards (in the direction of the arrow) by
means of a bar 71 a Figure 2 which is governed by a projection cut in the side of
the excentric 13 the sliders 75, 75 a guided between friction rollers 79 are moved
agaisut each other and the side borders of the blank are folded one by one which
is done by the lead lever 76 that by means of the obtuse slot is shifted forwards
before the slider 75 a.
Now a third slider 80 guided between friction rollers 80 a begins its work by
folding the lower border of the envelope for which purpose it is shifted against
the middle of the same by means of double armed levers 81 the inner ends of
which are connected to said slider whilst the outer forked ends are turned by
pins 81 a on the piece 71 during its going forwards.
At the end of this movement of 71 the last border of the envelope is folded by
the edge of the piece 71 and now the envelope undergoes a pressure for pasting
together the three lower rims. This is made by an angle shaped speeder 82
linked to a lever 82 a and fitted at its bottom side with caoutschouc or other
suitable material for producing a soft and jet a strong pressure. The lever 82 a
is therefore linked to the table and coupled by a connecting rod 85 to a lever 83
Fig. 2, an excentric 84 on shaft 2 gives the necessary motion so that speeder 82 is
pressed down upon the envelope.
After the folding and pasting process the plate 67 goes downwards and also a
size angle 86 which by means of the bars lever and excentric 87, 88, 89, 90
Figures 2 and 4 is turned round its fulcrum 90 a sideways, then the envelope
can freely fall down into the receiver 92 which is arranged below the table 1.
On its way to the receiver the envelope is guided in an obtuse direction by
suitable hoops 91, 91 a the first being a little movable Figure 11 for getting with
security a downstroke of the envelope.
The plate 67 strikes therefore on the edge of 91 and turns it round its privot c.
In the receiver 92 the envelope is shifted forwards by a plate 93 against a
support 95 which is drawn twards it by a cord and a weight 94 and which
together with the finished envelopes is secured in its suitable place by a stopping
arrangement wchich we shall describe more fully afterwards. The plate 93 is
made to go to and fro, it is fixed therefore to a lever 95 a the lower end of
which is coupled by a bar 96 with an ether lever 97. By the working of an
excentric 98 Figure 2 the lever 97 oscillates and consequently the plate 93 too.
At the side of the excentric 98 on shaft 2 is keyed an excentric 99 causing the
oscillating motion of a lever 100 that is connected with the stopping arrangement
by a bar 101. This consists of two levers 102 running across the receiver 92
above and below it.
Between them runs a spindle 103 carrying a disc 104 which is coupled by
rods 105 with the levers 102 so that when the spindle 103 by means of a
crank 106 and the bar 101 is turned the levers 102 open or close and let a
following finished envelope slip through or prevent with their points the going
back of the same.
In the manner thus described the envelopes are manufactured one by one and
for this purpose they are picked up one by one from the stock. In consequence
thereto the plane of the stock must be "constant" and therefore an automatically
rising of the plate 8 is required.
How this is done will be best seen from Figures 1, 2, 3 and understood from the
following.

page_text: The
The plate 8 is provided with a vertically guided rack 108 into which gears a
pinion 109. Its shaft 110 carries a ratchet 111 which is turned gradually by a
pawl 115 which is linked to a siiding piece 114. This piece is moved up and down
by the motion of a lever 112 which is governed by an excentric 113.
contrary turning of the ratchet prevents a pawl 116 which however may be
disengaged from the ratchet by a crank 117, spindle 118 and lever 119 so that
the plate 8 may go downwards and be fed with a fresh blank stock.
For regulating the plane of the stock more exactly a lever 120 is keyed to the
shaft of lever 112 which when the plate 8 rises too high brings the lever 112 out
of contact with the excentric 113. The sliding piece 114 and the pawl 115 are
then not moved and a turning of the ratchet is prevented.
Now it may happen that by any event the folded envelope on its way to the
receiver sticks fast so that a free passage for the following is stopped in con-
sequence of which plenty of waste would be obtained if this drawback would not
be avoided by an automatic disengaging coupling which in the proper moment sets
the machine out of motion.
We have now to explain the arrangement and working of the construction
invented by us for said purpose.
To the receiver 92 is linked a vertical lever 121 having rectangular bent a
slotted plate a.
The plate 95 is provided with a hoop 122 which corresponds with
the slot in a and at a normal working of the machine runs trough the same however
when an envelope coms to lay between itself and the plate a the lever 121 is
caused to be turned round its fulcrum. The lever 121 is connected by a rod 124
with a bolt 123 which guided in a case 125 serves as support for a weighted
lever 126. Therefore when the latter by shifting away the bolt 123 looses its
support, it must fall down suddenly and take with it the belt fork bar 127 and
shift the belt from the fast palley upon the loose pulley.
This however may also be done by hand for which purpose a bar 128 provided
with a button is arranged and connected by a horizontal double armed lever 129
with the bolt 123. The shifting inwards of the bar 128 causes therefore likewise
the falling down of the weighted lever 126.
For setting the machine in motion a bar 131 is provided for fitted at one end
with a crank 130 and at the other end with a lever 132 which engages with the
pivot n of the lever 126 and brings the same and the belt fork bar back in the
former position when the bar 131 is turned by hand at the crank.
The machine thus described may of course he used for different sizes of
envelopes, the corresponding tools must then be changed or adjusted for the
required sice.
Having now fully described and ascertained the nature of my said inven-
tion and in what mauner the same is to be performed I declare that what I
claim is :
In a machine for folding envelopes
1. The arrangement of a box 6 with a plate 8 which is gradually raised by rack
and pinion, excentric and lever gearing 108-118 in combination with a regulating
lever 120 for the purpose as described.
2. The arrangement for picking up the paper blanks consisting of a pipe 12
with a sponge 11 raised and lowered by a lever and excentric 13, 15 in combination
with a sucking pump 18 for the purpose as described.
3. The arrangement of a lever 24 on a shaft 23 being made to oscillate by a
projection 27 slide 26 bar 25 and lever 28 which carries at its head the nipper
consisting of two dies 30, 33 which are opened and closed by a cam 34 pawl, 36
spring 33 a in combination with fixtures 37, 38 for the purpose as described.
4. The arrangement of a gluten box 52 with a feeding and a pasting augle 54,55
being moved against each other one and two times respectively by means of the
excentrics 59, 62, levers 58, 63, bars 57, 61 and cranks 56, 60 for the purpose as
described.

page_text: 5. The arrangement of a folding apparatus consisting of a hoop 71 shifted to
and fro by a projection and a bar 71 a carrying two side sliders 75 75 a with a lead
lever 76 and two cross sliders 80 and the latter being fixed to the hoop 71 in
combination with a speeder 82 which is made to oscillate by an excentric 84
lever 83 and connecting rod 85 for the purpose as described.
6. The arrangement of a receiver 92 below the folding apparatus running
in front or backwards of the machine with a stricking plate 93 moved by
levers 95 a 97 connecting rod 96 and excentric 98 in combination with a weighted
support 95 and a stopping arrangement 99-106 for the purpose as described.
7. The arrangement of a disengaging coupling consisting of a slotted lever 121
and a hoop 122 on the striking plate 93; a supporting bolt 123 connected to said
lever by a bar 124 for a weighted lever 126 and belt fork bar 127; a bar and
lever combination 128, 129 and a similar arrangement 130, 131, 132 for the
as described.
Dated this 31st day of August 1895.
purpose
JULIUS LIEBHARDT,
ERNST FISCHER,
By A. Daumas,
42 Neuenweg, Barmen, Germany,
Agent for Applicants.