Year: 1886

page_text: Date of Application, 5th Oct., 1886.
Complete Left, 4th July, 1887.
Complete Accepted, 5th Aug., 1887.
I, PHILIP OTTO DE CLERMONT, of Loman Street, Southwark, in the County of
Surrey, Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to a perfecting printing machine of the kind in which two
impression cylinders continuously revolving operate in conjunction with a reciprocating
forme table.
I mount in stationary bearings two impression cylinders of equal diameter and
gear them together so that they revolve continuously in opposite directions, their
peripheries almost touching each other, and, in their impression parts, touching the
formes which reciprocate below them. Spaces are left in their peripheries to allow
freedom for the formes to retreat without touching them. In front and towards the
upper' part of the first cylinder I mount in stationary bearings a transfer cylinder half
the diameter of the impression cylinders, and I gear it to them so that its circum-
ference has the same velocity as theirs. The transfer cylinder is provided with one
set of grippers, the first impression cylinder has two sets diametrically opposite to one
another, and the second impression cylinder has one set, and these are so timed that
the operation on a sheet is as follows:
A sheet fed at the top of the first impression cylinder is seized by one set of its
grippers and carried round to meet the advancing first forme on which it is impressed.
As the grippers ascend from the forme, holding the front edge of the sheet, they meet
those of the transfer cylinder which now take hold of the sheet and carry it quite
round the transfer oylinder until they meet the second set of grippers of the first
impression cylinder, to which they deliver the sheet. These grippers carry the sheet
partly round the first impression cylinder until they meet the grippers of the second
impression cylinder, which now take the sheet and carry it down to meet the second
forme in the back movement of the table, by which the sheet is printed on the reverse
side. The grippers of the second impression cylinder carry on the perfected sheet and
deliver it to any suitable known take-off. The dimensions of the cylinders and stroke
of the forme table are such that while one sheet is passing from the first impression
cylinder to and round the transfer cylinder, a succeeding sheet is being led by the
first impression cylinder to get its first impression on the forme.
1
1000
ABEL & IMRAY,
28, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: I, PHILIP OTTO DE CLERMONT of Loman Street Southwark in the County of
Surrey, Engineer, do hereby declare the nature of this invention and in what manner
the same is to be performed to be particularly described and ascertained in and by
the following statement :-
My invention relates to a perfecting printing machine of the kind in which two
impression cylinders continuously revolving, operate in conjunction with a recipro-
cating forme-table. The accompanying drawing is a side view of such a machine
arranged according to my invention.
I mount in stationary bearings two impression cylinders A B of equal diameter and
gear them together so that they revolve continuously as indicated by the arrows in
opposite directions, their peripheries almost touching each other, and in their
impression parts, touching the formes which reciprocate below them on a table C in
the usual way. Spaces are left in the peripheries of the cylinders A, B, to allow
freedom for the formes to retreat without touching them. In front and towards the
upper part of the first cylinder A I mount in stationary bearings a transfer cylinder D
half the diameter of the impression cylinders, and I gear it to them so that its circum-
ference has the same velocity as theirs. The transfer cylinder D is provided with one
set of grippers d the first impression cylinder A has two sets a and a¹ diametrically
opposite to one another and the second impression cylinder B has one set b, and these
are so timed that the operation on a sheet is as follows:-
A sheet fed from a feed table E at the top of the first impression cylinder A is
seized by one set of its grippers a and is carried round to meet the advancing first
forme on which it is impressed. As the grippers a ascend from the forme holding
the front edge of the sheet, they meet the grippers d of the transfer cylinder D which
now take hold of the sheet and carry it quite round the transfer cylinder D until they
meet the second set of grippers a¹ of the first impression cylinder A to which they
deliver the sheet. These grippers carry the sheet partly round the first impression
cylinder A until they meet the grippers 6 of the second impression cylinder B, which
now take the sheet and carry it down to meet the second forme in the back movement
of the table C, by which the sheet is printed on the reverse side. The grippers 6 of
the second impression cylinder B carry on the perfected sheet and deliver it to any
suitable known take off such as is indicated at F. The dimensions of the cylinders A.
B. D. and stroke of the forme-table C are such that while one sheet is passing from
the first impression cylinder A to and round the transfer cylinder D, a succeeding
sheet is being led by the first impression cylinder A to get its first impression on the
forme.
a
In order that the grippers d of the transfer cylinder D shall close at the commence-
ment of one revolution of D and take the sheet from the grippers a of cylinder A, and
that at the commencement of the next revolution they shall open and deliver the sheet

page_text: to the grippers a¹ of cylinder A, a cam H is pivotted on the axis of the cylinder D
and receives a rocking motion by means of a rod G from an eccentric on the axis of
cylinder A.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, I declare that what I claim is :-
In a perfecting printing machine in combination with two equal impression cylinders,
a transfer cylinder of half the diameter arranged and operating substantially as herein
described.
ABEL & IMRAY,
Agents for the Applicant.