IMPROVEMENTS IN WEB PRINTING MACHINES
Year: 1876

page_text: LETTERS PATENT to Joseph Foster, of Preston, in the County of Lancaster,
for the Invention of "IMPROVEMENTS IN WEB PRINTING MACHINES."
PROVISIONAL SPECIFICATION left by the said Joseph Foster at the Office
of the Commissioners of Patents on the 27th November 1876.
JOSEPH FOSTER, of Preston, in the County of Lancaster.
WEB PRINTING MACHINES."
"IMPROVEMENTS IN
This Invention relates to certain improvements in the construction and arrange-
ments of the parts of web printing machines of the kind described in the Specifi-
cation of a Patent granted to W. Bond and to me, on the 22nd March 1871,
No. 774, and in the Specification of a Patent granted to me on the 18th November
1872, No. 3435. In such machines the types fixed in curved forms are placed on
the surface of cylinders against which the web of paper is pressed by impression
cylinders arranged at various points around the type cylinders so that a number of
successive impressions are taken on the paper which is guided to and from each
impression cylinder round carrier cylinders so situated as to space properly the
successive impressions.
For printing the first side from the forms on one of the type cylinders the
impression cylinders and carrier cylinders are conveniently situated below the type.
cylinder, which is thereby left easily accessible above for the purpose of placing the
type forms on it or for removing or altering them. But for perfecting or printing
the second side from the forms on the other type cylinder, the impression and carrier
cylinders have hitherto been situated so as to cover almost entirely the upper part
of the type cylinder, leaving only a portion of it exposed at the side, in such an
attitude that it is very inconvenient to place or remove the forms. I remedy this
inconvenience by so arranging the impression cylinders and carrier cylinders for
perfecting that there is left a free space between them directly on the crown or
uppermost side of the perfecting type cylinder, and instead of using between the
impression cylinders separated by this space a simple carrier cylinder of large size,
I employ two small carrier rollers, one close to each of the impression cylinders, by.

page_text: which the paper web is guided across the space from the one impression cylinder to
the other. The space thus presented on the crown of the type cylinder is in the
most convenient position for placing, altering, or removing the forms. The web as
it passes from the last impression cylinder is passed between cutting cylinders which
partially sever it, and the separate sheets are pulled apart by rollers of quicker
travel. Of these sheets one is made to pass over adjustable carrier rollers along a
course of such length that it exactly meets a succeeding sheet which passes along a
shorter course, and two sheets thus brought together, are guided over a course such
that they meet another succeeding pair of sheets, the four sheets thus brought
together being finally laid by a reciprocating flyer upon the delivery board.
When
According to my present Invention I effect the necessary guidance of the sheets
into the longer or shorter courses in the following manner. A reciprocating roller
is mounted near to a pair of rollers from between which the sheets issue.
this reciprocating roller is in one attitude it permits the sheet to travel onwards
along the short course, but when it is moved to another attitude it deflects the frout
edge of the issuing sheet towards another pair of rollers between which it is carried,
the sheet being thus guided along a long course. A like arrangement serves for
guiding the pairs of sheets into their long or short courses as the case may be, the
riciprocating rollers being so timed in their movements that four sheets are brought
together to the flyer by which they are deposited on the delivery board.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Joseph Foster in the Great Seal Patent Office on the 25th May
1877.
JOSEPH FOSTER, of Preston, in the County of Lancaster.
WEB PRINTING MACHINES."
"IMPROVEMENTS IN
This Invention relates to certain improvements in the construction and arrange-
ments of the parts of web printing machines of the kind described in the Specifi-
cation of a Patent granted to W. Bond and to me, on the 22nd March 1871,
No. 774, and in the Specification of a Patent granted to me on the 18th November
1872, No. 3435. In such machines the types fixed in curved forins are placed on
the surface of cylinders against which the web of paper is pressed by impression
cylinders arranged at various points around the type cylinders so that a number of
successive impressions are taken on the paper which is guided to and from each
impression cylinder round carrier cylinders so situated as to space properly the
successive impressions.
For printing the first side from the forms on one of the type cylinders the
impression cylinders and carrier cylinders are conveniently situated below the type
cylinder, which is thereby left easily accessible above for the purpose of placing the
type forins on it or for removing or altering them. But for perfecting or printing
the second side from the forms on the other type cylinder, the impression and
carrier cylinders have hitherto been situated so as to cover almost entirely the
upper part of the type cylinder, leaving only a portion of it exposed at the side, in
such an attitude that it is very inconvenient to place or remove the forms. I
remedy this inconvenience. by so arranging the impression cylinders and carrier
cylinders for perfecting that there is left a free space between them directly on the
crown or uppermost side of the perfecting type cylinder, and instead of using
between the impression cylinders separated by this space a simple carrier cylinder
of large size, I employ two small carrier rollers, one close to each of the impression
cylinders, by which the paper web is guided across the space from the one
impression cylinder to the other. The space thus presented on the crown of the
type cylinder is in the most convenient position for placing, altering, or removing
the forms. The web as it passes from the last impression cylinder is passed between

page_text: Fig. 1 of the Drawings shews a part side elevation of a web printing machine
with the before-described improved arrangement of the impression and carrier
cylinders applied thereto; a is the type cylinder, 61, 62, 63, are the impression
cylinders, and c¹, c², c, are the carrier cylinders and roliers. The impression
cylinders b1, b2, and carrier cylinder cl occupy the same or about the same position
in the machine as heretofore, but the impression cylinder 63, instead of being placed
vertically over the type cylinder close to the cylinder 6 as heretofore, is placed
considerably farther away to the opposite side of the type cylinder, as shewn, so
that the upper part or crown of the latter is quite uncovered and consequently
available for the purpose before-mentioned, and instead of the usual single large
carrier cylinder between the impression cylinders, I provide two small
carrier rollers c², c³, one close to each impression cylinder so that they do not
interfere with the said space over the type cylinder, the paper web d being made to
pass across in a straight line from the one roller to the other as shewn; e, e, are the
ink rollers, and f, f, are the guide rollers for the tapes.
Fig. 2 of the accompanying Drawings represents a side view of delivery apparatus
according to my Invention applied to a web printing machine, part of which is
shewn in connection therewith. The web having received its last impression from
the type cylinder A. and impression cylinder B, enters between the two cutting
cylinders C, C, to be cut or perforated by the serrated knife D. The web having
been thus perforated enters between the rollers E¹, E², and tapes F. These rollers
and tapes run at a speed a little greater than that at which the paper or web is
delivered from the press, so that when the web reaches the breaking roller G, being
nipped by the tapes in turning round the roller, and so compelled to go at the same
speed as the tapes, it is separated along the line of its perforation. A succeeding
portion of the web again slipping in the tapes F until it again reaches the breaking
roller G, having been in like manner perforated by the cutting cylinders C₁, C², is
broken off, and thus the web being perforated at equal distances is separated into
sheets. The first sheet (W) is turned in between rollers H1, H2, by means of a
swing roller I, which by means of an eccentric J is caused to reciprocate once for
every two separated sheets. The sheet (W) travels round an adjustable drum K
which is adjusted to such a distance that the leading edge of the sheet (W) will
meet the leading edge of the next succeeding sheet (X) at the point L. The two
sheets (W, X,) then travel on together and are fed in between rollers M1, M2, by the
swing roller N worked by an eccentric O, which by means of gearing is timed so
as to cause the roller N to reciprocate once for every four sheets. The two

page_text: All
sheets (W, X,) travel on between tapes round an adjustable drum P, and during the
time taken by these two sheets (W, X,) in thus travelling to the point Q, a third
Bheet (Y) has been turned into the grasp of the rollers H1, H2, and a fourth sheet (Z)
has met the third sheet (Y) at the point L, the leading edges of the second
pair (Y, Z,) meeting the first pair (W, X,) at the point Q before mentioned.
the four papers are then carried by tapes R1, R2, R3, under the flyer S which is
worked by a lever T and connecting rod U from a cam revolving once during the
discharge of four sheets from the printing cylinders. The sheets are then delivered
out of the tapes R by the flyer S on to the receiving board V.
Having thus described the nature of my Invention and in what manner the same
is to be performed, I claim,
First. In web printing machines arranging the upper impression cylinders at
some distance from each other on each side of the vertical plane through the axis
of the type cylinder, so that the greater part of the upper surface or crown of the
latter is left exposed, a small carrier roller being arranged near each such impression
cylinder for conveying the paper web across the uncovered crown of the type
cylinder, substantially as herein described.
Second. In delivery apparatus for web printing machines, the use of two recipro-
cating guide rollers arranged in combination with carrier rollers and tapes, and
operating in such manner that the first reciprocating roller directs every alternate
sheet of paper into a long course so as to meet the next sheet travelling on a short
course, while the second reciprocating roller directs every alternate pair of sheets
brought together by the action of the first reciprocating roller into a long course so
as to meet the next pair of sheets travelling on a short course, substantially as
herein described.
In witness whereof, I, the said Joseph Foster, have hereunto set my hand
and seal, this Twenty-fourth day of May, in the year of our Lord One
thousand eight hundred and seventy-seven.
JOSEPH FOSTER. (L.S.)