IMPROVEMENTS IN FOLDING MACHINES
Year: 1884

page_text: I, HERBERT JOHN HADDAN, of the firm of Herbert and Company, Patent Agents,
of 67, Strand, in the City of Westminster, Civil Engineer, do hereby declare
the nature of said invention for IMPROVEMENTS IN FOLDING MACHINES, a
communication to me from abroad by Henri Stamin, of Paris, France to be as
follows:-
This invention relates to folding machines and is partly applicable to existing
types of machines.
The principle of folding carried out by this machine is generally known, the
arrangement of particular movements, however, is new.
-
In describing this invention reference will be made to the annexed drawings of
which Fig. 1 is a side view of the machine, Fig. 2 a front view of the machine
partly in section and Fig. 3 a plan. The remaining Figures represent details.
In Fig. 1, 11 is the feeding table on which the. sheets to be folded are piled up.
The up-motion is rendered automatic by means of an arrangement which will be
hereinafter described. Z are the fingers operated by the arms 15 and serving to
draw the sheet on to the table 12. 14 is an oscillating folding knife arranged on
the table 12. In this case, however, the knife 14 describes a semi-circular motion
(instead of a quarter of a circle as has hitherto been the case), counted from the
inoment when the knife comes in contact with the sheet.
The sheet is guided until it passes between the bands r, by plates forming at the
same time the body of the table. The first folding line is thereby placed horizontal
and the second folding knife 23 must. move in a vertical plane. This second knife
also imparts to the sheet a semi-circular motion, so that the second fold is placed
vertical, and the third knife 24 moves in a horizontal plane against the sheet so as
to direct the folded sheet towards the pair of rollers W.
The knife 24 is not guided in a straight line as usual but has an oscillating
motion round the axis 1.
After the sheet has subsequently passed between the pressing rollers W₁, it is
lifted by the spreader B working in a peculiar manner.
The principal part of the invention consists in the use of an adjustable system
of dotting needles for rapidly and symmetrically adjusting or setting the folding
mechanism according to the size of sheets required.

page_text: The improved machine is provided with a suitable number of adjustable
dotting needles forming a system in such mechanical connection with itself
and the machine, that when each single dotting line is set to correspond to the
number of pages of a lifted sheet, this sheet is in the proper position for being
exactly folded; the folding apparatus being automatically adjusted owing to the
mechanical connection of this system with the adjustable parts of the folding
apparatus.
For octavo sheets (see fig. 4) to be folded three times, and for which the machine
represented in the annexed drawings is constructed, I use 8 dotting needles
corresponding to the eight pages.
Supposing a sheet to be placed in the machine and the folding lines, after which
the same would be folded, to be marked on the table, these folding lines form what
may be called the folding axes of the machine.
The improved machine has a fixed position of the folding axes I, I, and II, II,
and a variable position of the folding axes III, III, while in some machines hitherto
known the axis I, I, only is fixed.
The number of the variable axes is consequently reduced to a minimum in the
new machine..
The 8 dotting needles are symmetrically adjustable to two fixed axes I, I, II, II,
and the variable axes III, III.
The variable distance between the axes I, I, and III, III, determines the-size of
the leaf or page and the relative adjustment of the folding knives.
In the new construction this adjustment consists in placing the axis of rotation
of the second folding knife higher or lower.
In some existing machines the first knife would be correspondingly adjusted.
The dotting needles i, ' (Figs. 5 and 6) are loosely. mounted in the holders n, n,
máde adjustable in pairs by right and left handed screws vv which ensures their
symmetrical adjustment to the axis II II..
Each pair of dotting needles is carried by a slide s³, 81, 8111, 81. These slides are
guided parallel to the axis II, II, by two round rods t t¹, 811 and 11 are connected
by means of a screw b with right and left handed thread and which has its
bearing in the support e. The screw is turned by means of the hand-wheel B,
whereby the symmetrical adjustment of the pairs of dotting needles, corresponding
to 10-15 and 11-14 (Fig. 4), to the axis II is obtained. The slide 8 is con-
nected with the slide 8 by means of a screw band in a similar manner the
slide 8 to the slide 8 by means of screw b", the thread of which runs in the
opposite direction.
The screw 6 carries a regulating hand wheel 4 the rotary motion of which is
transmitted by means of toothed wheels 5' and a. long pinion 5 to the second
spindle . This pinion 5 is made of one piece with a bevel wheel into which
gears the bevel wheel 7 which turns the shaft 6.
'
The latter carries a second bevel wheel 7 adapted to turn the nut of the screw 8.
This screw is fixed to the support 9 of the pivot of the second folding knife,
whereby the intended proportional adjustment of the pivot is obtained.
.
The support 9 is guided above and below by axle bearings 10 and 13, and
prevented from turning by an arm 9. The support 13 forms the bearing of
the nut 7'.
The arm 91 carries the set screws 16 serving as a stop for the second knife,
while 17 is the set screw serving as a stop for the first knife. During the working.
of the machine, the attendant, placing the sheets in the machine, need only watch
two dotting needles. The whole of the dotting needles are lifted at each stroke of
the machine so as to permit the moving of the sheets, after which the needles
descend.
The lifting is caused by the oscillating arms 9, 9, of the slides 8¹ 8 and on
which rest the dotting needles by means of the nuts situated at the upper ends of
the same.

page_text: One of the 8 needles i is, however, so connected with the lever as to receive
a downward pressure and to transmit the same to the surface of the paper,
(see Fig. 5).
The whole of the small levers 9, 9, is set in motion by the oscillating cross bar 9
passing over. the same; and at one end, of this cross bar is fixed the arm 9
depressed by the lever 35 operated by the disc 34 for the purpose of lifting the
dotting needles. The lever 35 is lifted and the dotting needles caused to descend
by the angle-lever provided with a counterweight.
i
This angle lever is provided with a pawl m which acts each time the needles
ascend and slightly lifts the table by means of the tooth wheel M and toothed
rack N.
In consequence of this the surface of the paper is sufficiently raised, so that owing
to the contact of the dotting needle with the surface of the paper, the pawl m,
which would barely travel sufficiently to engage in the next tooth, is prevented
from gearing with the latter and consequently from lifting the table.until so many
sheets have again passed from the table into the machine, that the level of the
pile. of paper is reduced to its previous hight, after which the pawl gears with
another tooth, and so on.
The surface of the pile of paper remains therefore at the same height which is
automatically regulated.
1
The table 11 is guided by a round rod 36.attached to the frame of the machine.
A peculiar feature also consists in the arrangement for setting in motion the
separate parts of the machine. 18 is the driving shaft. At the end of this shaft is
mounted the friction disc F over which fits the stepped cone connected with the
fly-wheel and pressed against F by the helical spring o.
The machine may be immediately thrown out of gear by means of the hand
lever 19 and the rod connected with the same.
The motion is transmitted from the driving shaft by means of tooth gearing to
the shaft 20, from here in the same manner to the shaft 21 and subsequently to the
rollers.
The spur wheel mounted on the shaft 20 is provided with a crank pin connected
with the pin of a smaller crank ƒ by means of the connecting-rod d.
This crank is mounted on the shaft 25 and imparts to it rotary motion at unequal
speed.
For instance while the shaft 20 makes one half a revolution, the shaft 25,
makes about 5% of a whole revolution, and during the other half revolution of the
shaft 20, the shaft 25 makes therefore only 1% of a revolution.
The shaft 25 carries on its other end a second crank which by means of a
connecting rod imparts oscillating motion to the arm mounted on the axle 1.
The connecting rod is but slightly longer than the radius of the crank k owing to
which nearly the whole motion takes place during half a revolution of the shaft 25
which corresponds as mentioned before, to 1/, of a revolution of the shaft 20).
The law of motion of the third knife is therefore an advancing and receding
motion during a short period and a subsequent almost total stop.
I thus obtain by a combination of ordinary crank mechanisms the same result
which has hitherto been obtained by grooved discs..
The arm his connected with a toothed sector h¹ gearing into the toothed wheel 20
mounted on the arbor of the first knife 14 so as to impart a swinging motion to
the latter. The arm h is furthermore connected with the arm hu carrying the
third knife 24 which thereby receives the same oscillating motion.
A further arm is screwed on the arm and carries at its end a connecting
rod 27 serving for the up and down motion of the spreader B.
In addition to the up and down motion this spreader or rack B has an oscillating
motion around the axle caused by the grooved disc 28 and lever 37. The two
motions are combined in the following manner:
From the position represented in Fig. 1 the rack B, consisting of a series of
wooden bars mounted on a cross bar swings first backward so as to form a free

page_text: space between the rack and the wall of the chest 29. This chest receives the sheet
leaving the rollers whereupon the rack is so far depressed that its upper points
disappear under the bottom of the chest. The rack now again swings in the
opposite direction and passing through gaps in the wall of the chest 29, it is again
placed in the position represented by fig. 1. Thus while moving downward.at the
rear of the sheet it has been lifted at the front side of the same. The rack then
repeats the oscillating motion above described and presses the same sheet towards the
rear, where it is placed with the sheets already piled up in the chest, during which
time a space is again formed in front of the rack to receive another sheet.
The rack is guided in its up and down motion by means of holes situated at both
ends of the two oscillating arms 31, mounted fast on the shaft u and which serve
to hold two of the bars of the rack.
The second knife 23. is operated through a connecting rod by means of a crank 40,
mounted at the lower end of an upright shaft rotated by wormwheels, the lever 42
and sector 43 gearing into a long pinion 44 mounted fast at the lower end of the
upright shaft 45 connected with the adjustable support 9; and which transmits
the oscillating motion by means of gearings on the horizontal axle of the knife.
On the crank pin fis hinged besides the connecting rod d, the rod 32 connected
with the lever 33 and thus operates the sheet catches 15 mounted on the same
axle as the lever 33.
7

page_text: I, HERBERT JOHN HADDAN, of the firm of Herbert and Company, Patent Agents,
of 67, Strand, in the City of Westminster, Civil Engineer, do hereby declare the
nature of my invention for IMPROVEMENTS IN FOLDING MACHINES, a communication
to me from abroad by Henri Stamm, of. Paris, France, 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 folding machines and is partly applicable to existing
types of machines.
:
In describing this invention, reference will be made to the accompanying
drawings in which Fig 1 is a side view of the machine, Fig 2 a front view partly
in section, and Fig 3 a plan of the machine; Fig 4 shows an unfolded printing
sheet on which the folding lines are indicated by dotted lines. Fig 5 is a section
of the dotting apparatus. Figs 6 and 7 are diagrams of the inechanism for
operating the first and third folding knife.
The principal features of this machine consist in special mechanism for setting
the points or dotting needles according to the number or arrangement of pages on
a shoet, and for the corresponding adjustment of the folding knives according to
the larger or smaller size of the paper, that is to say, special mechanism for
adjusting or setting the whole machine.
This mechanism comprises a system of dotting or puncturing needles i i, arranged
above the table 11 on which is placed the pile of sheets to be folded; these needles
are so arranged that they can only be set symmetrically to the (imaginary) folding
lines II, II II, III III, Fig 4, along which the sheet is to be folded-according to the
arrangement of the pages or columns printed on the sheets.
Hitherto the correct adjustment of the points or dotting needles for the sheets
had to be performed by complicated and troublesome operations, while variations
in the size of the sheets necessitated the separate adjustment of various mechanisms
of the machine. On the contrary, the operations for adjusting this improved
machine are limited so that for any given printed sheet the dotting needles need
only be adjusted in such manner, that to any given number of pages of the sheet
corresponds one dotting needle.
The adjustment is effected by means of the following special mechanism.
The dotting needles i i, which, as already mentioned, form a systein corresponding
to the numbers of the pages, are mounted loosely in holders nn. These holders
are connected with each other in pairs by means of small right and left handed
screws vv, (Fig 3), which serve to adjust the dotting needles symmetrically to the
folding line II II. The separate pairs are rendered adjustable symmetrically to
the folding line II, for which purpose each pair is supported by a slide 8 8", 1,
guided parallel to the folding line II II by means of two round rods t t..
The slides 8" and 8" are connected with each other by the screw spindle b₁.
having right and left handed screw-threads, and which is held in the bracket e and.
adapted to be turned by means of the hand wheel 3.
By adjusting two pairs of symmetrical dotting needles, which is effected by the
small screw spindles vv and the screw spindle b₁ as described, the correct position
of the sheet is first secured.
It should now be understood, as an essential feature of the machine, that the
adjustment of the folding knives as required by the larger or smaller size of pages
is effected by and simultaneously with the adjustment of the dotting needles i i..
according to the numbers of the pages.
This is based on the following arrangement:
On every printed sheet having the number of pages marked upon it (Fig 4),
the distance between the first and third pair of numbers, or (which is the same)

page_text: 0
between the second and fourth pair of numbers (whatever the relative position of
the numbers on each page) is always equal to twice the distance between the
parallel folding lines III III and II, which is the particular "size" to be considered,
that is to say the size according to which the sheets are to be folded at a given
position of the folding knives.
The distance, however, for which the knives are to be moved or adjusted, is in
all cases in proportion to the variations of the size, therefore also in proportion to
the above mentioned distance of the pairs of even or uneven numbers.
In accordance with this condition the slide 8¹ of the first pair of dotting needles
is connected, with 11 of the third pair of dotting needles by a screw 6; in the
same manner, the slides 8" and s", corresponding to the even numbers, are connected
by means of a screw 6111. The screw carries à hand wheel 4, and its rotary
motion is transmitted to the screw b¹¹ through the pinions 51 511 and the inter-
mediate wheel 5, whereby uniform adjustment is effected.
The intermediate wheel 5 is cast in one piece with a toothed bevel wheel and
transmits by means of the same its rotary motion on the bevel wheel 7 of the
shaft 6, which in its turn transmits the motion to the mechanism for adjusting the
folding knives.
The sheet, placed accurately under the needle points, is drawn on the table 12 of
the machine, by means of the fingers Z, and folded, along the folding line I-I by
means of the oscillating folding knife 14 during its passage through the slit formed
by the parts 12, 12 of the table, the sheet being then directed in a half revolution
towards the second folding knife 23, where. the sheet is caught in the usual
manner between' the stretched bands 7, 7, while the knife is thrown back into its
starting position. The second knife 23 operates in an analogous manner, aud
directs the sheet also in a half revolution towards the third folding knife 2+, which
oscillates around the axle 1, folds the sheet for the last time, and directs the same
to the rollers W, after which the sheet passes a pair of glazing or polishing
rollers Win the usual manner.
The. fulcra of the knives 14 and 24 are fixed, while the knife 23 is adjustable
owing to the variations in the size of the pages.
The functions of this knife 23 and the mechanism for adjusting the same (23)
have the following peculiar features.
The adjustment or setting consists in raising or lowering the fulcrum (see Fig 2),
whereby the sheet is conducted higher or lower in front of knife 24, which
constantly operates at the same height, in consequence of which the fulds I I
and III III are placed nearer or further from each other, in other words the sheet
is folded into smaller or larger pages.
The adjustment is effected by the bearing of the knife axle in the support 9,
which is guided by vertical' pivots in the bearings 10 and 13 fixed to the frame of
the machine.
The support 9 is kept at the height determined by the size of the pages, by means
of a screw spindle 8 arranged laterally and the nut of which is firmly held in the
support 13.
When the needle points are being adjusted, the support 9 is automatically set at
'the required height, because, as already set forthi, the rotary motion of the
screws and 6" is transmitted, by means of the train of wheels above mentioned,
to the shaft 6, and from the latter, through a small conical pinion (Fig 1) to the
toothed circumference of the screw 8, so that in short: the mutual approach and
removal of the even or uneven pairs of dotting needles causes a proportionate
upward or downward movement of the support 9, whereby the connection between
the mechanism for adjusting the points and that for adjusting the folding knives is
⚫ effected..
It is well known, that at the places, where the sheets are removed from the edge
of the knife, the bands must be:clamped together.
In this improved construction the bands are clamped at the same places, although
the knife. may go higher, or lower. to suit the different. sizes. Consequently the

page_text: Camps need not be re-adjusted, which is important in as much as variations in the
size of printed sheets are common and must be compensated. This substantial
advantage is obtained by the half revolution, instead of the quarter turn or
rectilinear motion of the folding knives.
The folding knives are operated by means of peculiar and special mechanisms,
through which a more certain and accurate effect than hitherto is obtained.
The first folding knife 14 oscillates rapidly forward and backward, so that during
the remaining time, whilst it is situated over the table, the full motion of the
second knife and the feed motion of the sheets, by means of the fingers Z, can take
place. While one sheet is being folded for the first time, the preceding sheet is
folded for the third time.
The machine is therefore so arranged, that the first and the third folding knife
are operated simultaneously by the same mechanism, because the third folding
knife must also be thrown rapidly forward and backward especially in order to
ensure a correct removal of the sheets by the rollers.
This rapid forward and backward movement at intervals is effected in the
following peculiar manner.
The spurwheel c mounted on shaft 20 (figs 1 and 2) and uniformly turned from
the driving shaft 18, forms at the same time a crank, being provided with a pin
which is connected through a link d with the pin of a smaller crank f mounted on
shaft 25. The latter thereby receives, a complete rotary motion which is, however,
of extremely unequal speed, owing to the proportions of the parts c d fand the
excentric position of the shafts 20 and 25. It is well known, that the law of
motion of this mechanism corresponds to that of two eccentric tooth wheels.
As may be seen by fig 6, the shaft 25 remains almost stationary during a long
pause and assumes subsequently a proportionally rapid rotary motion. During
this rapid rotation, the folding knives are oscillated to and fro by means of a second
crank keyed on shaft 25, and which operates the arm / through connecting rod g.
On this arm is screwed the arm h¹¹ carrying the third knife 24 and the toothed
sector operating the first knife.
The effect of the rapid forward and backward motion is considerably increased
by the fact that the toothed rack g is only slightly longer than the radius of the
crank, while, as may be seen by Fig 11, half a revolution of k is already sufficient
to produce almost the complete to and fro motion of h.
While on the one hand the new movement follows the same law of motion
(periodical rapid forward and backward motion) as was hitherto the case with
curved discs and similar devices, it further possesses the advantage of rotating
cranks, namely exclusive journal friction and an especially accurate, vigorous and
safe operation which could not be sufficiently obtained by the mechanisms hitherto
in use.
The oscillations of the second knife are effected by crank 40 (Fig 2), and
by means of connecting rod 42, lever and toothed sector 43, which gears into
the toothed pinion 44. The latter is connected with the vertically adjustable
support 9 through vertical shaft 45, which transmits the motion through a bevel
gear at its upper end to the horizontal shaft of the second knife 23.
The fingers Z Z are operated by the connecting rod 32 hinged to the crank f, by
the lever 33 and the arms 15 mounted on the same shaft as the latter. The
fingers are thus periodically operated in a similar manner as shown in the case of
the first and third knife.
°
The motion of the feeding table is automatic and effected accurately in accordance
with the decrease of the pile of paper. This is effected by means of a needle.¿¹
(fig 1), which falls freely down on the surface of the pile and thereby sets in
operation a ratchet mechanism. The motion of the ratchet wheel controlled by the
pawl m is transmitted, by means of tooth wheel M and toothed rack N, to the
table 11 guided in a vertical line by rod 36. The said pawl m is hinged to lever l,
and at each play of the machine this pawl is pressed downward to a certain point
by means of lever 35 and intermediate lever 9", the lever 35 being operated by.

page_text: the curved disc or cam 34, so as to turn the ratchet wheel for not more than one
tooth at a time.
Owing to a counterweight connected with lever the pawl is only then lifted
sufficiently to engage the next tooth of the spurwheel, when in consequence of a
slight decrease of the paper pile, the contact needle connected with 91 is
permitted to descend far enough; otherwise the pawl only reaches for instance,
halfway to the next division, as indicated by the position Fig 1, owing to which
the ratchet wheel is only set in motion when the surface of the paper has fallen
below the normal level. The needle ¹ is preferably one of the dotting needles.
The dotting needle to be used for this purpose, is provided with a head (Fig 5)*
having a groove into which engages a short lever. Each slide 81 811 is provided
with such a small lever, and all are operated by a cross bar passing over the same
and attached to 9" (Figs 2 and 5). The other dotted needles are only suspended
from the short levers by means of their heads formed by double nuts (Fig 5), so as
to be lifted each time in order to permit the feeding of the sheets forward.
i
The delivery appliance is remarkable in so far as it is formed by a grate or
rack B operated in a peculiar manner. The arms 37 fixed on shaft u and oscillated
by the curved dise 28 serve to hold the rack consisting of a series of bars attached
to a cross bar. The rack is moreover moved up and down by the arm 11 attached
to the arm, and the connecting rod 27. The two movements are combined in
the following manner.
In the position illustrated by Fig 1 a free space exists between the rack and the
wall of the receptacle 29 which serves to receive the folded sheets leaving the
rollers W. Thereupon the rack is lowered so far that its uppermost point
disappears under the bottom of the receptacle.
The rack now oscillates into the position indicated in Fig 1 by dotted lines, and
thereupon moves upward in the same direction, by passing through gaps in the wall
of the re eptacle.
While the rack thus moves downward in front of the sheet, it again rises in
the rear of the same and during the subsequent oscillation it presses the sheet to
the front into the position above described, where it joins the sheets already
accumulated, while free space is again formed behind the rack.
The machine is provided with a special device for laying down defective sheets
separately, without interrupting. the working of the machine.
r
This device is operated by pressing on a treadle P, wlienever a defect is observed
during the delivery of a sheet.
This sheet is treated like the others, but is not directed into the receptacle.
The treadle P shifts one of the rollers o o, situated in the periodically turned
ratchet-wheel R, whereby the roller arrives at the proper moment under the lever H,
lifts the same, and thereby draws downward the roller W" connected with the
lever H by a long rod, whereby the defective sheet which in the mean time has
reached the roller W, is not conducted between the pair of rollers W', but falls
out underneath the same.
During the continued rotation of the wheel R, a guide presses the shifted roller
back into its normal position. In their normal position all rollers pass behind the
lèver H, and consequently they do not act on the same.
Another peculiar feature consists in the instantaneously acting disengaging gear
for the machine, which chiefly comprises a friction coupling, the friction disc
(adapted to be thrown out of gear by means of a hand lever 19) being pressed, by
means of a helical spring against the flange of the stepped cone which turns loosely
with the fly-wheel.
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 claim is:
"
In folding machines:
1. The combination of three folding knives 14, 23 and 24, of which 14 and 23

page_text: sguided in a semicircle, the first and third knife (14 and 24) oscillating on fixed
oints, while the fulcrum of the second knife (23) is situated in the support g and
eed only be raised or lowered by means of screw spindle 8 and its nut, in order to
hange the size of the pages into which the sheet is to be folded.
2. A puncturing or dotting appliance comprising a system of dotting needles i, i
rranged according to the number and arrangement or size of pages of each sheet,
and adapted to be shifted in pairs symmetrically to the folding line II II, by means
of right and left hand screw spindles vv, the said needles being supported by
slides 81, 81, 81, 84, rendered adjustable symmetrically to the folding line II by
means of screw spindles b¹ b
3. For the purpose of automatically setting the folding knives by the adjustment -
of the dotting needles ii for the required number of pages of a sheet: mechanism
adapted to transmit the relative adjustment of the two slides forming a pair,.
namely 8 and 811, or 8111 and 8', upon the support 9 of the folding knife 23 (by
means of screw spindle 6" or 61, spur-wheels 51, 51, 5, 7, shaft 6, screw spindle 8
with nut and bevel wheels), in such a manner that the alteration of the distance
between the slides 8 and 8 or 8" and 8 causes a corresponding up and down
motion of the support 9 of the folding knife 23, so that the latter carries the sheets
in front of the following knife 24 higher or lower.
4. For the purpose of obtaining a periodical motion a) of the folding knives 14
and-24 and the arm or rack B by means of crank k, link g and arın h. b) of the
finger Z by means of crank fand connecting rod 32: a mechanism comprising the
crank wheel c, rod d and crank f, adapted to obtain with a uniform motion of 'c a
periodical motion of the common shaft 25 of the cranks f and k, in such a manner,
that every rotation of the latter is followed by a long pause of approxima'e rest.
5. For the purpose of automatically raising the table 11. according to the decrease
of the pile of sheets placed upon it: the combination of a ratchet mechanism
comprising a lever and pawl m, with a contact needle ¹ and lever 911, in such a
manner that the position of the pawl m with regard to the teeth of the ratchet-
wheel, and therefore, the feed motion of the latter, depends on the height of the
pile of sheets on the table 11.
6. The arrangement of the seizing arın or rack B adapted to pass from the front
of the sheet to the rear of the latter, by means of an up and down motion
produced by arm and connecting rod 27, in combination with an oscillating
motion produced by a cam or curved guide disc 28 and lever 37.
7. The appliance for delivering or laying out single sheets separately, which
comprises a pedal P, rollers o, lever H and delivery rollers W, arranged in such a¯
manner, that a pressure of the treadle P in combination with a periodical motion
of the rollers o causes the delivery roller W₁ to be lowered:
The whole substantially as described and illustrated.
Ja of December 1981

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