IMPROVE- MENTS IN PRINTING PRESSES
Year: 1862

page_text: LETTERS PATENT to Francis William Gerish, of East Road, City Road,
in the County of Middlesex, Engineer, for the Invention of "IMPROVE-
MENTS IN PRINTING PRESSES."
Sealed the 18th July 1862, and dated the 22nd January 1862.
PROVISIONAL SPECIFICATION left by the said Francis William Gerish
at the Office of the Commissioners of Patents, with his Petition, on-the
22nd January 1862.
I, FRANCIS WILLIAM GERISH, of East Road, City Road, in the County
of Middlesex, Engineer, do hereby declare the nature of the Invention for
"IMPROVEMENTS IN PRINTING PRESSES," to be as follows:―
This Invention has, for its object improvements in printing presses. For
these purposes the reciprocating bed or table on which the form of type is
placed, is caused to receive its motion from a rotatory axis or driving shaft,
on which there is a crank which carries a pinion on the crank pin, the pinion
rotates freely on the crank pin, and the teeth of the pinion gear with the
teeth of a fixed wheel, which by preference is formed with internal teeth, and
provision is made for the reciprocating bed or table which carries the type
coming to rest at the time the impression is taken, notwithstanding the driving
shaft continues its rotatory motion, and in place of the platten rising and falling

page_text: to give the impression as is generally the case in flat or platten printing presses,
the table with the type is lifted against a fixed stationary platten by means of
The press may be arranged to be worked by manual or other power.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Francis William Gerish in the Great Seal Patent Office)
on the 22nd July 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FRANCIS
WILLIAM GERISH, of East Road, City Road, in the County of Middlesex,
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of January, in the year of our
Lord One thousand eight hundred and sixty-two, in the twenty-fifth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said. Francis William Gerish, Her special licence that I, the said
Francis William Gerish, my executors, administrators, and assigns, or such
others as I, the said Francis William Gerish, my executors, administrators,
and assigns, should at any time agree with, and no others, from time to
time and at all times thereafter during the term therein expressed, should
and lawfully might make, use, exercise, and vend, within the United King-
dom of Great Britain and Ireland, the Channel Islands, and Isle of Man, an
Invention for "IMPROVEMENTS IN PRINTING PRESSES," upon the condition,
(amongst others,) that I, the said Francis William Gerish, my executors or
administrators, by an instrument in writing under my, or their, or one of
their hands and seals, should particularly describe and ascertain the nature
of. the said Invention, and in what manner the same was to be performed,
and cause the same to be filed in the Great Seal Patent Office within six
calendar months next, and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Francis William Gerish, do hereby.
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and by
the following statement thereof, that is to say :-
This Invention has for its object improvements in printing presses. For
these purposes the reciprocating bed or table on which the form of type is
placed, is caused to receive its motion from a rotatory axis or driving shaft on
which there is a crank, which carries a pinion on the crank pin, the pinion

page_text: rotates freely on the crank pin, and the teeth of the pinion gear with. the
teeth of a fixed wheel, which by preference is formed with internal teeth, and
provision is made for the reciprocating bed or table, which carries the type,
coming to rest at the time the impression is taken, notwithstanding the driving.
shaft continues its rotatory motion, and in place of the platten rising and
falling to give the impression, as is generally the case in flat or platten printing
presses, the table with the type is lifted against a fixed stationary platten by
means of cams. The press may be arranged to be worked by manual or other
power.
And in order that my said Invention may be most fully understood, and
readily carried into effect, I will proceed to describe the Drawings hereunto
annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a side view of a printing press constructed according to
my Invention. a, a, is the frame of the press, and 6 is an axis carried
thereby, and driven in any convenient manner. On it is a pinion c, which
actuates the spur wheel d on the central axis e; f is a crank arm keyed on
the axis e, (it is shown in dotted lines in the Drawing); and g is a pinion,
carried by, and capable of turning freely on a stud at the extremity of this
crank arm. The teeth of the pinion g gear with the teeth of a fixed wheel or
circular rack h, and the pinion 9 having half as many teeth as the circular
rack h. The pinion as it is carried round makes one revolution for each
revolution of the axis e; g' is a projection from the pinion g, to which the
connecting rod i is jointed, the other end of the connecting rod is jointed to a
frame which slides to and fro in the fixed framing. This is clearly shown at
Figure 2. is an end view of one side of this portion of the fixed framing
also marked a' in Figure 1. j is an end view of one side of the sliding frame,
it works in V-grooves in the framing a¹; is a notched piece fixed to the
frame j, and to it the connecting rod i is jointed as is shown; l is the type bed,
it is arranged as in other printing presses, and is connected with the springs
m, and these are secured to the slides n, n, which are able to traverse freely
in grooves in the framing a¹; o, Figure 2 is a latch, mounted on a centre o¹
fixed to the type bed, this latch when turned down enters the notch in the piece
k, and so long as the latch is left in this position when the press is at work
the type bed will as will be seen continue to traverse to and fro on the framing
a', but each time that the type bed comes to the end of its outward stroke
the tail of the latch meets an incline which lifts it out of the notch, so that
the traverse of the type bed is stopped until it pleases the workman to remove

page_text: the incline, and allow the descent of the latch into the notch, this he does
when the type has been inked, and the paper laid on. Each time that the
type bed is taken in under the fixed platten 6, the pressure necessary to effect
the printing is applied by a cam 9 on the axis e. This cam is shown in
Figure 3, it has a ball q' fitted into it at the point which gives the nip to
lessen the friction. The cam gives motion to a vertical sliding piece r, which
coming under the type bed raises it up to the fixed platten p, and gives the
pressure required, this can be exactly adjusted by a wedges, which by the
.screw't can be introduced to a greater or less distance between the can q
and the vertical sliding piece r. The necessary pause of the type bed at the
time the pressure is given, is provided for by making the notch in the piece k
of some length as is shown.
Having thus described the nature of my Invention, and the manner of
performing the same, I would have it understood that what I claim is, the
giving motion to the type bed or table by means of a pinion carried by a crank
arm round a fixed toothed wheel or circular rack as herein described.
In witness whereof, I, the said Francis William Gerish, have hereunto`
set my hand and seal, this Twenty-second day of July, in the year of
our Lord One thousand eight hundred and sixty-two.
F. W. GERISH. (L.S.)