IMPROVEMENTS IN PRINTING MACHINERY
Year: 1876

page_text: LETTERS PATENT to William Caspar Kritch and Arthur Greenwood, both of
Leeds, in the County of York, Engineers, for the Invention of "IMPROVEMENTS
IN PRINTING MACHINERY."
PROVISIONAL SPECIFICATION left by the said William Caspar Kritch and
Arthur Greenwood at the Office of the Commissioners of Patents on the 23rd
November 1876.
WILLIAM CASPAR KRITCH and ARTHUR GREENWOOD, both of Leeds, in the
County of York, Engineers. "IMPROVEMENTS IN PRINTING MACHINERY."
This Invention relates to improvements on the machinery forming the subject of
a Patent granted to the present applicants, and bearing date April 30th, 1875,
No. 1602, for improvements in printing machinery.
The object of the present Invention is to increase the efficiency of the machine
described in the Specification of the said Patent, both in respect of the distribution
of the ink and in the taking of the impression from the inked type.
The ink fountain, in which the fountain roller is mounted instead of being a
fixture as heretofore, is made free to rock upon a transverse shaft under the action
of a rotating cam, which through means of a crank rod gives the required recipro-
cating motion to the platten. This rising and falling of the ink fountain gives
an intermittent action to the fountain roller, raising it up to and holding it in
contact with the first distributing roller for any determinate period.
This arrangement provides for a regulated amount of ink being delivered into
the machine. Instead of maintaining the shogging or endway motion roller in constant
contact with the first distributing roller, we mount it in a hinged frame so arranged
and proportioned that when tipped over the shogging roller may be brought to act
upon the second distributing roller.
This arrangement will avoid the use of one of the distributing rollers contained
in the before-mentioned Patented machine.
In that machine the platten was described as supported in the last portion of
its forward motion upon a pair of feet which moved upon a flat side or bed, and
thus ensured for the platten a steady motion parallel to the type.
In order the better to attain this object we now form the platten casting with
two additional hind feet, which so soon as the platten has reached a vertical

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Caspar Kritch and Arthur Greenwood in the Great Seal
Patent Office on the 23rd May 1877.
WILLIAM CASPAR KRITCH and ARTHUR GREENWOOD, both of Leeds, in the
County of York, Engineers. IMPROVEMENTS IN PRINTING MACHINERY."
This Invention relates to improvements on the machine forming the subject of
a Patent granted to the present inventors, and bearing date April Thirtieth, One
thousand eight hundred and seventy-five, No. 1602, for "Improvements in Printing
Machinery.'
The object of the present Invention is to increase the efficiency of the machine
described in the Specification of the said Patent, both in respect of the distribution
of the ink and in the taking of the impression from the inked type.
Our Invention relates,-
Firstly. To means for regulating the amount of ink delivered into the machine
and consists in making the fountain or ink reservoir in which the ink delivery roller
is mounted free to rock upon a transverse shaft instead of being a fixture as here-
tofore while in use. This rising and falling of the ink fountain gives an inter-
mittent action to the ink delivery roller, raising it up to and holding it in contact
with the first distributing roller for any determinate period.
Secondly. To means for shifting the shogging or endway motion roller from
contact with one ink distributing roller to contact with another. Thus instead of
maintaining the shogging or endway motion roller in constant contact with the
first distributing roller we mount it in a hinged frame, so arranged and proportioned
that when tipped over the shogging roller may be brought to act upon the second
distributing roller.
Thirdly. To means for ensuring to the reciprocating platten during the last portion
of its forward motion a steady movement parallel to the type.
In the machine described in the Specification of the above-mentioned Patent the
platten was described as supported in the last portion of its forward motion upon a
pair of feet, which moved upon a flat side or bed.
We now form the platten casting with two additional hind feet, which so soon as
the platten has reached a vertical position will slide over our horizontal rests or
supports, and thereby increase the steadiness of the platten at the moment the
impression is taken.
In the accompanying Drawing Fig. 1 is a side elevation of the improved machine;
Fig. 2 is a front elevation; Fig. 3 is a partial sectional elevation taken in the line
1, 2, of Fig. 2, and Fig. 4 is a back clevation of the upper part of the machine.
In these Figures A is the main framing of the machine; B is the main driving
shaft, keyed on to which is a pinion that takes into a spur wheel C keyed on the
cain shaft D.
In Fig. 3 E is the bed of the press; F, the platten connected by adjustable
screws to the bridge G, which rocks on an excentric shaft H, having its bearing in
sliding blocks H' supported on V's on the main framing. This bridge G, which
carries the platten, is moved up to and from the "form" of type by the to-and-fro
motion of its shaft H, and receives at the same time a rocking motion on its shaft
through its connection with a pair of slotted arms 1, which are free to rock on a
fixed fulcrum.
The to-and-fro movement of the shaft II is derived from a pair of draw bars K,
which embrace the ends of the shaft, and extend to crank pins fitted respectively to
the spur wheel C and to a cam L, Fig. 1, keyed to the shaft D at opposite sides of
the machine

page_text: The ink fountain or reservoir M carries a fountain roller P, which rotates therein.
The fountain is cast with a pair of bracket arins M', through which passes a trans-
verse shaft N mounted in bearings in the main framing. On this shaft N the ink
fountain is free to rock under the action of the cam L, it being supported thereon
(see Fig. 1) through the interposition of a bowle O fitted to a link O₁ that is loosely
jointed to one of the bracket arms M' of the fountain, and is adjusted in position
by a screw stop 02 fitted to the side of the fountain. This arrangement for the
rising and falling of the ink reservoir provides for a regulated amount of ink being
delivered in the machine from the fountain roller P to the roller R.
The fountain roller P, Fig. 3, receives rotary motion from the spur wheel C in
the following manner:-On one end of the shaft of the principal inking cylinder Q
is keyed a spur wheel 1, which gears into the large spur wheel C on the shaft D,
and on the opposite end of this shaft is a spur pinion 2, which gears into a
pinion 3 (see Fig. 1) keyed to the transverse shaft N. In gear with this pinion 3
is a pinion 4 keyed on the axle of the fountain roller P; therefore as the wheel C is
driven the fountain roller will be caused to rotate and deliver ink to the first dis-
tributing roller R when it is brought into contact therewith.
The second distributing roller R¹ (like the roller R) rotates by friction of contact
with the ink cylinder Q.
A transverse shaft S is free to slide endwise in bearings in the main framing,
and carries a hinged frame T, in which is mounted the shogging ink distributing
roller U, which receives its endway motion from a lever V carried by a bracket pro-
jecting from the main framing. The lower end of this lever carries a bowle which
enters a grooved cam W keyed on the axle N. The roller U is so situate with
regard to the two rollers R, R', that by tipping the frame T it is capable of being
brought into contact with either of those rollers at pleasure, and thereby of
spreading the ink evenly over their surfaces.
The bridge G is cast with two feet G¹, which rest upon a slide or bed A¹ when
the platten is in a vertical position, and in addition to these the bridge is provided
in rear with two feet G, which rest on the sides A2, and thus a broad bearing is
given, and consequent increased steadiness is imparted to the bridge while advancing
to give the impress to the paper.
In other respects the action of the bridge and platten is similar to that described
in the Specification of our before-mentioned Patent.
Having now described our Invention of "Improvements in Printing Machinery,"
and having explained the manner of carrying the same into effect, we wish it to
be understood that we claim as the Invention secured to us by Letters Patent as
aforesaid,
Imparting to the ink fountain and its appendages an intermittent rising and
falling motion for the purpose of transmitting from the constantly rotating fountain
roller an intermittent supply of ink to the ink distributing rollers, as herein set
forth.
We also claim mounting the roller U in a rocking frame, which will admit of
the said roller being placed in contact with either of the rollers R or R¹, as may be
required.
We further claim the adaptation to the bridge piece G, which carries the platten
of the additional feet G in combination with the slides or supports A, as and for
the purpose herein set forth.
In witness whereof, I, the said Arthur Greenwood, have hereunto set my
hand and seal, this Nineteenth day of May, in the year of our Lord Ono
thousand eight hundred and seventy-seven.
ARTHUR GREENWOOD. (L.S.)