IMPROVEMENTS IN MACHINERY FOR SETTING UP AND WORKING THE PRESSING BARS OF PAPER CUTTING MACHINES
Year: 1881

page_text: LETTERS PATENT to Herbert John Haddan, of the Firm of Herbert and
Company, Solicitors of Patents, of 67, Strand, in the City of Westminster,
Civil Engineer, for an Invention of "IMPROVEMENTS IN MACHINERY FOR
SETTING UP AND WORKING THE PRESSING BARS OF PAPER CUTTING
MACHINES." A communication from abroad. by Franz August Barthel, of
Leipzig, in the Kingdom of Saxony..
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at
the Office of the Commissioners of Patents on the 3rd May 1881..
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer. "IMPROVE-
MENTS IN MACHINERY FOR SETTING UP AND WORKING THE PRESSING BARS OF
PAPER CUTTING MACHINES." A communication from abroad by Franz August
Barthel, of Leipzig, in the Kingdom of Saxony.
The Invention consists of a mechanism for setting up and working the pressing
bars of paper cutting machines, consisting of a frame with fixed and loose disks
for effecting motion to the right and left, and wheels in connection with a discon-
necting mechanism with connecting links consisting of disconnecting levers and
springs; also of a mechanism for setting up and working the pressing bars of
paper cutting machines, consisting of a driving shaft with driving disks by which
are driven the wheels, in connection with which there is a crank or eccentric rod,
which by means of a crank loop causes the pressing bar to move up and downward;
in connection with this mechanism a disconnecting apparatus, consisting of an
oval disk with loop, stopping rod with spring arranged in connection with a
disconnecting rod.
A mechanism for setting up and working the pressing bars of paper cutting
machines, consisting of a counter bed provided with a diagonal slit in connection
with the pressing rod and drawing rod, the latter being caused to move forward
and backward by means of a crank or eccentric rod, or by a shaft, as the case may
be, and this movement is effected in such a manner as to cause the driving shaft to
be made to revolve by means of a belt disk; this rotary movement is transmitted
to shaft by means of wheels, when at the same time an automatic disconnecting
mechanism takes effect, which is formed by pins fixed on to a wheel and a lever
with spring and a slit aperture in connection with a disconnecting rod.
The various parts are of metal.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Herbert John Haddan in the Great Seal Patent Office on the
31st October 1881.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer. "IMPROVE-
MENTS IN MACHINERY FOR SETTING UP AND WORKING THE PRESSING BARS OF
PAPER CUTTING MACHINES." A communication from abroad by Franz August
Barthel, of Leipzig, in the Kingdom of Saxony.
The pressing mechanisms represented on enclosed Plates possess the following
peculiar properties, to wit:-
Plate I. Whereas in the case of the paper cutting machines hitherto in use the
pressing beam was set in motion by hand through the spindle A, which mode of
pressing caused much trouble to the operator, another arrangement has been
adopted, according to which the pressing is effected by power.
The spindle is provided with the groove a, into which projects the key b fitted
into the wheel B. As soon as the wheel B is made to revolve by méans of the
wheel D, the spindle A. and the press-block are adjusted high or low, as may be
required. When the spindle is being set low, that is to say, when the paper fed in
is being pressed together, the automatic stopping of the shaft C and of the wheels B
and D respectively is brought about by the following mechanism :-
The shaft C carries the two fixed pulleys Rand Land also the loose pulleys E, E, E.
The disengaging-bar F carries the belt-forks c, c', which guide the straight and
cross belts. For the down motion the straight belt lies on the pulley R and sets
in motion the wheels B and D, which cause the spindle to move in a downward
direction and force the pressing-beam to compress the paper which has been fed in.
As soon as the pressure has attained the intensity required, the nut G. pushes
against the lever H, which has its fulcrum at e, and which by means of its
extremity h prevents the disengaging lever M from following the pressure of the
spring J. By means of the further descent of the nut G the lever H is turned
away and disengaged from the lever M, and the latter is, through the spring J,
quickly thrust forward as far as the tooth i. Owing to the movement made by the
lever M the disengaging bar with the driving belt is shifted from the pulley R to a
loose pulley E, so that both belts drive only the loose pulleys E, E, and the
movement of the shaft C with the wheels B and D is suspended. The stopping
having been effected and the cutting being terminated, the lever M. is brought by
hand underneath the tooth i in order to cause the disengaging bar to guide the
crossed belt on to the pulley L; the spindle turning to the left moves in an upward
direction, after which the lever M is, by means of the guide O, again brought into
its intermediate position over the tooth i. According to the thickness of the layer
of paper to be cut, the nut G is set higher or lower on the spindle A. by turning it
round, whereby the disengagement of the lever M is effected sooner or later. As
soon as the nut G has effected its upward motion, the lever M is pressed upon the
pin P by means of the spring 1, and thereby brought into its normal position. The
frame N consists of one piece, and is mounted upon the cutting machine.
Plate II. The object of the pressing apparatus represented on Plate II. is, like
that on Plate I., to effect the motion of the pressing beam by power.
The arrangement in this case is as follows:-For cutting machines in which the
advance of the pressing-beam is effected by means of eccentrics or levers, which
however has hitherto been done by hand, the following arrangement has been
adopted
To the frame A of the cutting-machine is fixed the standard B provided with

page_text: the bearings a, a¹, and b. The bearings a and a¹ support the driving shaft C, on
which are placed a fixed and a loose pulley D and D¹; moreover the driving pinion E
is keyed upon the shaft C, which pinion gears into the wheel f and sets it in.
motion. The shaft G of the wheel F.has its bearings at c and d and carries the
crank H. The crank-pin of latter slides in the slotted block I, which is connected
with the pressing-beam in such a manner as to force the latter to accompany the
crank-pin in its up and downward motion.
The height of the intervening space between press-plate and pressing-bar may
be regulated by the screws f, fi; hence the working of the pressing-bar is effected
by means of a crank or excentric, and the movement is, after the pressing has been
terminated, stopped by means of a separate mechanism and in the following
manner:-
The shaft G carries the oval disk K, see Fig. 4, Plate II., which revolves in the
strap L. The disk K presses down the stopping rod M, which is driven upward
again by the spring g. As soon as the disk K has drawn away the stopping rod M
from the projection h of the disconnecting rod O, the spiral spring q, which is
wound round the disconnecting rod O and exorcises a pressure against m, forces the
disconnecting rod O, and therefore the belt, on to the loose pulley and the pressing
movement comes to a standstill; hence the disk K causes the mechanism to stand
still as soon as the pressing-beam has reached its highest or lowest position. After
having effected the stoppage the machine is again set in motion by means of the
hand lever N, when by means of a sliding movement of O the stopping-rod M is
again pressed underneath the shoulder h; this may be done, because at the
moment of disconnecting by means of the hand lever N the disk K has already
been slightly turned aside, in consequence of which the spring g is enabled to
push the stopping-rod M again in front of the shoulder of the disconnecting rod.
The pressure is regulated by fixing the intermediate space between pressing-beam
and press-plate in such a manner as to ensure the pressure attaining its maximum
whenever the crank or excentric H has reached its lowest position.
Plate III. The arrangement represented on Plate III., Fig. 1 to 4, also tends
to effect the motion of the pressing-beam by power, or by means of an engine
worked by hand, in such a manner as to cause the pressing mechanism to stop
automatically as soon as the maximum pressure has been reached.
The general arrangement of this appliance is as follows:-The pressing-beam A,
which, according to the thickness of the layer of paper to be cut, may be regulated
to a corresponding height or depth by means of the screws 1, 1, is connected with
the pressing rod B provided with a slide block, through which passes a fork pin D
controlled by the connecting rod E. The slide block moves in the slit of the
counter bed C, which movement is effected by means of the crank G formed by the
shaft H. The crank G may be replaced by an excentric fixed to the shaft H. The
shaft H is set in motion by means of the spur wheels I and K, the latter receiving
its motion from the driving-shaft L which is driven by the pulley M.
The driving mechanism is provided with a disengaging gear arranged in the
following manner :-
The shifting rod N is guided at a and b and carries the belt shifter c. The
lever O, provided with the opening f and pivoting at g, passes closely behind the
guide a of the shifting rod N. When the pressing-beam is in motion the lever O
comes to lie behind the extremity of the shifting rod at a in such a manner as to
prevent the latter from making any sliding movement by means of the driving-
spring 9 pressing against the tooth i. But when, on the other hand, the pressing-
beam has attained its lowest position, coinciding with the maximum amount of
pressure, a movement of the lever O takes place, occasioned by the pins & fixed on
to the wheel I. The lever O is thereby shifted aside in such a manner as to bring
its slit-opening fin front of the guide a of the shifting rod N, whereby the moving
spring is set in action, after which the shifting rod is rapidly moved along and
the belt shifted from the fixed on to the loose pulley. If the pressure is to be
applied again the belt is displaced by means of the shifting rod N and hand lever-P,

page_text: and at the same time the lever O is, through the action of the spring h, replaced in
its former position, that is to say, in front of the guide a, and in this manner the
same process of automatic pressing and disengaging is again commenced. The
constructive formation of the entire mechanism depends otherwise upon the con-
struction of the various paper cutting machines to which it is applied.
1. A mechanism for the purpose of working the pressing-beams of paper cutting
machines consisting of frame N (vide Plate I.), shaft C with fixed and loose pulley
for right and left hand motion, and wheels B and D, in combination with a dis-
engaging mechanism, consisting essentially of the disconnecting lever M with
spring I, lever H with spring l, and spindle A with adjustable nut G.
2, vide Plate II. In paper cutting machines the driving and regulating gear,
consisting of the driving shaft C with the driving pulleys D, D', by which are
driven the wheels E and F, with which a crank or excentric H is connected, which
by means of a slide block effects the up and down motion of the pressing-beam,
and in combination with this mechanism there is a disengaging gear, consisting of
the oval disk K with strap L, stopping rod M with spring g, arranged in connection
with the shifting rod O, the spring q, and the disengaging lever N.
3. A driving and regulating gear for the pressing-beams of paper cutting
machines (vide Plate III.) consisting of the obliquely slotted frame C connected
with the pressing-rod B and connecting-rod E, the latter being caused to move
forward and backward by means of crank or excentric G driven by a shaft H, this
movement being effected in such a manner that the driving shaft is set in revolution
by means of the pulley M, and this rotary movement transmitted to shaft H by
means of the wheels I and K, when and in combination with this mechanism
an automatic disengaging gear formed by the pins a fixed on to wheel I, the lever O
with spring and the slit-aperture, the shifting rod N guided at a and b, and
which is connected with the moving spring g and the hand lever P.
The whole substantially as described and illustrated.
In witness whereof, I, the said Herbert John Haddan, have hereunto set my
hand and scal, this Thirty first day of October, A.D. 1881.