IMPROVEMENTS IN PRINTING MACHINERY
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by the said William Caspar Kritch at
the Office of the Commissioners of Patents on the 21st July 1882.
WILLIAM CASPAR KRITCH of Leeds in the County of York, Engineer,
"IMPROVEMENTS IN PRINTING MACHINERY"
My invention has reference to improvements in platen printing machinery of the
kind described in the specifications of former Letters Patent granted to me and
to Arthur Greenwood, and numbered and dated respectively, 1062, April 30th 1875,
and 4549, November 23rd, 1876.
(1) According to my present invention the platen is caused during its recipro-
cating motion to and from the type bed, to maintain a parallel position in relation
thereto, in lieu of receiving a tilting motion during its recession therefrom as
heretofore usual in such machines. (2). The reciprocating carriage of the bridge to
which the platen is attached is provided with a pair of housings and rollers, the
latter having an intermittently rotating motion imparted to them by suitably
arranged mechanism, for feeding the paper or other material to be printed upon
from a continuous web or roll carried at a convenient part of the machine.
also provided with guide rollers for conducting the said paper or other material fairly
on to the surface of the platen, and a roller or rollers for conducting the same from
the platen after having received the impression, to the first named or feeding rollers.
(3). An inclined plane or fixed cam is provided for actuating the frisket fingers
for holding the paper or other material on to the platen during the taking of an
impression, and for releasing the same previously to the commencement of the feed
thereof.
It is
(4) A pair of shears actuated by suitably arranged mechanism is applied to the
machine for cutting off the printed paper or other material into sheets and
depositing the same into a receptacle provided therefor

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, and of
an Order of the Lord Chancellor, filed by the said William Caspar Kritch in
the Great Seal Patent Office on the 22nd March 1883.
WILLIAM CASPAR KRITCH, of Leeds in the County of York, Engineer
"IMPROVEMENTS IN PRINTING MACHINERY
"
My Invention has reference to improvements in platen printing machinery of the
kind described in the specifications of former Letters Patent granted to me and
to Arthur Greenwood and numbered and dated respectively 1602, April 30th, 1875,
and 4549 November 23rd, 1876.
Firstly, According to my present invention the platen is caused during its
reciprocating motion to and from the type bed, to maintain a parallel position in
relation thereto, in lieu of receiving a tilting motion during its recession therefrom
as heretofore usual in such machines.
Secondly. The reciprocating carriage or bridge to which the platen is attached
is provided with a pair of housings and rollers; the latter having an intermittently
rotating motion imparted to them by suitably arranged mechanism for feeding the
paper or other material to be printed upon, from a continuous web or roll carried
at a convenient part of the machine. It is also provided with guide rollers for
conducting the said paper or other material fairly on to the surface of the platen,
and a roller or rollers for conducting the same from the platen after having
received the impression, to the first named or feeding rollers.
Thirdly. An inclined plane or fixed cam is provided for actuating the frisket
fingers for holding the paper or other material on to the platen during the taking
of an impression, and for releasing the same previously to the commencement of
the feed thereof.
Fourthly. Shears actuated by suitably arranged mechanism are applied to the
machine for cutting off the printed paper or other material into sheets and
depositing the same into a receptacle provided therefor.
In the accompanying four sheets of drawings, like parts are marked with the
same letters and numerals in the several views wherein such parts appear.-Fig. 1,
sheet. 1, is a front elevation of my improved machine, but the feed rollers, housings,
and feed motion are not shewn in this view. Fig. 2, is a side elevation. Fig. 3,
Sheet 2, is a sectional elevation taken in the line 1, 2, of Fig, 1. Strictly speaking,
a section taken in that line would not shew the inclined plane or cam t, for
actuating the frisket fingers, but I have indicated it in this view in order to shew
its action on the said frisket fingers. Fig. 4, Sheet 3, is a partial front view shewing
the feed rollers, housings, feed motion and cutting off shears and the method of
actuating the same. Fig. 5, Sheet 3, is a side elevation of the feed motion.
Figs, 6, 7, and 8, Sheet 4, shew a modification of the cutting off shears and also of
shears for cutting to width and the method of actuating them. Fig. 9, is a partial
plan of the machine partly in section. A, is the principal framework of the
machine, B, the first motion or driving shaft, C, C, the driving pulleys (fast and
loose) D, the fly wheel, E, a spur pinion keyed on the shaft B, and which takes
into a spur wheel F, on the crank shaft G,-H, is the bed of the press, I, the
platen provided with a loose front. I 1, for the purpose of being taken out and made
ready for taking an impression and for saving time in preparing the same.
platen is connected by adjustable screws J, to the bridge or carriage K, which is
provided with feet for taking a bearing and moving upon the slides L, L of th
main framing. The front of the bridge or carriage K, is connected by means of th
The

page_text: shaft M, to carriages N, N, which move upon the slides O, O, of the main framing A,―
The slides L, L, and O, O, being parallel with each other maintain the platen in a
parallel position in relation to the type bed of the press. The to and fro movement
of the bridge or carriage K, is derived from the crank pins P, P, one in the spur
wheel F, and the other in the cam disc Q, by means of draw-bars R, R, one end of
each of which is on the said respective crank pins P, P, and the other ends embrace
eccentric portions of the shaft M,-By means of the eccentricity of the shaft M, and
its angular movement by the impression lever S, the amount of impression may be
either regulated or removed altogether as desired and while the machine is in
motion.. T, T, are a pair of housings mounted upon the reciprocating bridge or
carriage K, which carry the feed rollers U, U, these rollers receive an intermittent
rotating motion during the backward movement of the said bridge or carriage K,
by means of the rack V, pinion W, pawl X, and ratchet wheel Y, or their equivalent.
This rotating motion of the feed rollers U, U, is adjustable to suit the length of
sheet to be cut off at each stroke, and at or about the time of an impression being
taken as follows:-When it is required to cut off the longest sheet, the rack V, by
means of the nuts a, a, or other equivalent means, has a very slight end wise move-
ment, which thus gives the greatest amount of angular motion to the rollers U, U,
during the backward stroke of the bridge or carriage K. The cutting off of shorter
sheets is effected by the nuts a, a, being so placed as to allow the rack V, to move
along with the bridge or carriage K, until arrested by the said nuts a, a, coming in
contact with the arm Z, when the motion of the feed rollers U, U, commences and
continues to the end of the backward stroke of said bridge or carriage K, b, is the
web of paper or other material under treatment. The roll of it, is by preference
mounted in the lower part of the press, the paper being drawn thence as required,
by the action of the feed rollers U, U, combined with that of the bridge or carriage K,
and platen I, c, d, are guide rollers for leading the paper or other material fairly
on to the face of the platen which is held thereon by the frisket fingers r, by the
action of the fixed cam t, on the lever 8, as the latter moves up the inclined part of
said cam t, the said paper or other material after receiving an impression, is, by.
the contrary movement of said lever s, on the cam t, released and passes over the
guide roller e, on the upper edge of the platen and between the shears f, f, for
cutting off the edges, then between the feed rollers U, U, after which it is cut off
by the shears g, gl, and deposited in a receptacle h, provided therefor. In Fig. 4,
sheet 3, the shear blade gl, is shewn hinged at oue end, and to be actuated at the
other end by a fixed cam or inclined plane i, acting on the bowl j, attached to the
said shear gl. But I prefer to use the modified arrangement shewn in Figs. 6, 7,
and 8, Sheet 4, in which the moveable blade gl, is also hinged at one end and is
actuated by an adjustable cam or gate k, hung in an angular position on the stud k¹,
its lower end resting against a pin l, or its equivalent, against which a bowl m, on
the lever n, fixed to the shaft o, (during the forward motion of the bridge or
carriage K) comes into contact with and runs up the inclined side of the said cam
or gate k, and over the top, in the meantime the lever p, also fixed on the said
shaft o, acting on the upper shear gl, causes it to close and cut off the printed sheet,
which drops into the receptacle h, above referred to. On the bowl passing over
the top of the said cam or gate k, the shear blade g 1, is immediately opened by the
action of the spring q, by which the bowl m, is placed behind the cam or
gate, then by the backward movement of the bridge or carriage K, the
bowl m, opens the said gate k, and passes to the front side thereof ready for
another cut off,-, are the frisket fingers for holding the paper or other material on
to the platen during the taking of an impression and for releasing the same there-
after and previously to the commencement of the feed motion, and are actuated in
both directions as previously referred to during the to and fro motion of the bridge
or carriage K, and platen I,-3, is the main inking cylinder driven by gearing
from the crank shaft G,-The ink fountain or reservoir u, is fixed on the upper
back part of the framework A, and consists of three parts, the outer part v, having

page_text: "
"
11
"
31
"
end walls between which the inner part w, is adjustable by set screws and holding
back screws, the end walls of the part v, are provided with bearings for carrying
the fountain roller x, which receives an interinittently rotating motion from the
cam y, lever z, link 4, pawl 5, and ratchet wheel 6, on the axle of the fountain
roller x, 7, is the feed roller suspended in the swing frame 8, and free to move on
the pins or centres 9, in such wise that it bears against and receives ink from the
fountain roller x, and by which it is frictionally driven during the time of its
contact therewith. The said feed roller 7, by a projection 10, on the link 4, (during
its backward movement) coming into contact with the suspending frame 8, is
caused to bear against and transfer the ink received from the fountain roller x, on
to the main inking cylinder 3, at each revolution of the crank shaft G,-11, is a
lever actuated by a pin 12, in the wheel F, for releasing the said feed roller 7, from
contact with the main cylinder 3, when it again comes into contact with the
fountain roller x, and thus receives a fresh supply of ink for conveyance to the
inking cylinder 3, as before referred to.-13, is a distributing roller driven by
frictional contact with the inking cylinder 3, and in order to ensure an equal
distribution of ink on the inking cylinder 3, a changer
roller 14,
or "mouse
is mounted in a swing frame 15, and rests upon and is frictionally rotated by
contact with the distributing roller 13; this "changer or mouse roller also
receives a backward and forward endwise motion from the cam 16, (on the
periphery of the crank disc Q) and lever 17, the end of which is in connection
with the bar 18, on which the swing frame 15, is mounted. The ink is next
transferred from the main inking cylinder 3, to the inking rollers 19, and 20,
which are mounted in sliding bushes 21, and 22, in the frame 23, and by means of
springs are pressed into contact with and receive a supply of ink from the said
cylinder 3. The frame 23, and said inking rollers 19, and 20, receive a vertical up
and down motion over the face of the "forme" or type, through the links 24,
and 25, and the levers 26, and 27, attached to the shaft 28, one on each side of the
machine and which are actuated by the scroll cam 29, on the inner face of the
wheel F, as shewn in Fig. 2, Sheet 1, and Fig, 3, Sheet 2, as follows:-30, is a
lever mounted on a stud 31, in the framework A, on the upper end of this lever is
a bowl or runner 32, which takes into the scroll cam 29, in the wheel F, on the
lower end of said lever is jointed the link 33, provided with a slot 34, and notch
35, the latter taking on to a stud or bolt 36, in the lever 37, of the shaft 28, thus
actuating the levers 26, and 27, and working the inking roller frame 23, and rollers
19, and 20, up and down. A counterweight 38, on the arm 39, of said shaft 28,
counterbalances said inking frame and rollers. When it is desired to stop the up
and down movement of the said inking rollers 19, and 20, and while the machine
is at work, the same may be disengaged by means of the rod 40, and bell crank 41,
raising the link 33, with its notch 35, from the stud or bolt 36, and allowing the
latter to play to and fro in the slot 34 of the link 33, the counterweight 38, in the
meantime retains said frame 23, and rollers 19, and 20, in their uppermost position
as shewn in Figs. 1, 2, and 3, of the drawings
Having now described the nature of the said Invention and the manner of
carrying the same into practical effect I would have it understood that what I
consider to be novel and original and therefore claim as secured to me by the
Letters Patent herein before first in part recited is
1st. Causing the platen to maintain throughout its movement a position parallel
to the face of the type bed substantially as hereinbefore described with reference
to the accompanying drawings.
2nd. The use of feeding rollers U, U, mounted upon the bridge or carriage K, and
actuated intermittently as it moves to and fro for unrolling and feeding the paper
or other material under treatment substantially as hereinabove described and
illustrated.
3rd. The use of rollers c, and d, at the lower part of the platen I, for guiding the
paper or material under treatment fairly on to the surface of the platen, and a

page_text: roller e, on the upper part of the platen I, for guiding the paper or material as it
leaves the said platen, to the feeding rollers U, U, substantially as hereinbefore
described and illustrated.
4th. The method of actuating the frisket fingers for holding and releasing
the paper or other material on or from the surface of the platen by means of
the fixed cam t, acting on the lever 8, to which the frisket fingers are attached
substantially as described and shewn in the drawings.
5th. Providing the machine with shears adjustable as and by the means
substantially as described and shewn in Figs 6, 7, and 8, for cutting the printed
paper or other material to width and length as above set forth.
In Witness whereof, I, the said William Casper Kritch have hereunto set my
hand and seal this fourteenth day of March in the year of our Lord One
thousand eight hundred and eighty three.
WILLIAM CASPER [sic] KRITCH (L.S.)
Witness to the Signature of the said
William Casper Kritch,
THOS. E CRAVEN C.E.
Fellow of the Inst. of Patent Agents
24, Victoria Chambers
Leeds.