IMPROVEMENTS IN PRINTING MACHINES
Year: 1885

page_text: I, HENRY P. FEISTER, of Philadelphia, Pennsylvania, U.S. A., Mechanical
Engineer, do hereby declare the nature of my invention for "IMPROVEMENTS IN
PRINTING MACHINES," and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
My invention has reference to printing machines; and consists in certain
improvements fully set forth hereinafter.
In perfecting printing machines as heretofore constructed the sheet which is
carried by one impression cylinder after being printed upon one side is transferred
to another impression cylinder, being reversed by the operation, and is printed
upon the other side, the transferring of the sheet from one cylinder to the other
being effected by means of currents of air and nippers upon said cylinders. In this
invention I dispense with the use of air and employ in lieu thereof one or more
transfer frames secured to one of said cylinders, and operating to throw the lower
edges of the sheets over against the second impression cylinder at the proper
moments, which sheets are then caught by the nippers on said second cylinder and
carried around to receive the second impression.
I also employ nippers of peculiar construction as applied to impression cylinders
of the class hereinafter described, in combination with suitable actuating devices
therefor whereby the time of their closing upon and releasing the paper is made
adjustable. I further employ a transfer frame of special construction as hereinafter
described.
In the Drawings Figure 1 is a side elevation of a printing machine embodying
my invention.
Fig. 2 is an enlarged sectional elevation of a portion of the two impression
cylinder in the act of transferring the sheet from one to the other.
Fig. 3 is a front elevation of a part of the impression cylinder provided with the
transfer frame, and
Fig. 4 is a sectional view of the end of one of the adjusting screws for the cams
which actuate the nippers and transfer frames.
A is the frame of the machine and may be provided with a track or guideway A¹
upon which the endless bed of carriages B run, which carriages support the type
Dmins Q.71

page_text: forms C and D are the two impression cylinders and have impression faces c and d
which are adapted to print from every alternate type carriage those which are
omitted by cylinder D being printed from by cylinder C. There may be any
desired number of impression surfaces upon these impression cylinders. Each
impression surface is provided at the advance end with nippers H which are
secured to a shaft h provided with a pinion H which meshes with a segmental
gear K¹ secured to a shaft / to the end of which is secured a crank K which may
be normally kept in one direction by a spring ¹. These nippers H are operated
through the above mechanism by cams N, L, R and R¹ which are pivoted to the
axis of the cylinders C and D and may be adjusted by screws S which pass through
nuts T pivoted to the frame A, the ends of said screws S being grooved as at s
and received in the ends of socket piece S¹ which are pivoted to the cams, being
retained within said socket piece by a screw or pin s¹ and allowed to rotate freely
therein. Any other form of adjusting mechanism may be used in lieu of that part
described.
E is the roll of paper, F F are the measuring rolls or cylinders and G is the
knife, which parts may be made in any suitable manner.
These impression cylinders C and D and carriages B may be sychronously driven
by means of gearing as described in the specification of former Letters Patent
dated April 18. AD 1882. U are the inking rollers, and are preferably located
between said impression cylinders, and U₁ is a screen or shed to prevent the paper
held by the impression cylinders accidently coming in contact with the said
inking rolls.
Pare the transfer frames and consist of arms P¹ slotted at their bottoms as
at p³, and are secured at their tops to rock shafts p carrying on their ends cranks O
which are drawn in one direction by springs o. Working on the bottoms of said
arms P¹ are the cross bars P2 which are secured thereto by screws P³. The
bottoms of these plates or bars P2 are notched as at p to allow the nippers to pass
when clamping the bottom of the paper in the act of transferring. The arm P¹
may be set in a recess D2 in the periphery of the cylinder D and in the center
thereof so as to rest between the two impression surfaces which correspond to two
pages it being preferable to print two page sheets from each carriage B. If single
page sheets are to be printed then there will be two arms P¹, in any case the
arms P and bars P2 are arranged to come upon the margins of the sheet so as not
in any manner to interfere with a perfect impression.
M is a shield to prevent the sheets falling away from the cylinder D. B¹ are the
delivery tapes, b is the fly frame. 61 is the receiving table and B2 the folding and
trimming mechanism to which I make no claim in this application.
The operation is as follows:-
The paper E is fed between rollers or cylinders F and cut off by cutter G into
sheets of the required size. The nippers H on cylinder D are held open by cani L,
and as the crank K runs over the end thereof the said nippers closes suddenly upon
the end of the sheet and carry it forward. After being printed upon by the type
forms on carriages B, it ascends and the cam Q on crank O swings out the transfer
frame P thus throwing the bottom edge of the sheet X over within reach of the
nippers H on the cylinder O which have been kept open by cam R, and which
sudden close upon the said paper. At the same instant the cam N opens the
nippers H on the cylinder D so as to allow the sheet to be carried off by cylinder C,
and having been reversed, it is printed upon the other side by the type forms on
one of the carriages B omitted by the cylinder D. The cam R¹ then opens the
nippers Hand the sheet printed upon both sides is carried off to the folding
apparatus. The cams L, N, Q, R, and R¹ may be accurately adjusted by the
screw S so as to actuate the nipper and transfer frames at exactly the proper
instant to insure the proper manipulation of the sheets.
While I prefer the construction shown I do not limit myself to the details thereof
as they may be modified in various ways without departing from my invention.

page_text: Having now particularly described and ascertained the nature of my invention,
and in what manner the same is to be performed, I declare that what I claim is i
1st. In a printing machine two impression cylinders provided each with one or
more impression surfaces in combination with a series of type forms arranged to be
passed in succession in contact with said cylinders, one of which cylinders prints
from alternate type form, and the other of which prints from those omitted;
nippers arranged upon said cylinders, mechanism to operate said nippers to catch
and deliver the sheets, transfer frames pivoted to one of said cylinders and adapted
to swing the tail end of the sheet over to the other cylinder where it is caught by
the nippers before the sheet has left the first impression cylinder and mechanism
to operate said transfer frames at the proper instant, substantially as and for the
purpose specified,
2nd. In a printing machine two impression cylinders provided each with one or
more impression surfaces in combination with a series of type forms arranged to be
passed in contact with said cylinder, one of which cylinders prints from alternate
type form, and the other of which prints from those omitted, nippers arranged
upon said cylinders, mechanism to operate said nippers to catch and deliver the
sheets, transfer frames pivoted to one of said cylinders and adapted to swing the
tail end of the sheet over to the other cylinder where it is caught by the nippers
before the sheet has left the first impression cylinder, mechanism to operate said
transfer frames at the proper instant and devices to adjust the time of operation
of the transfer frame mechanism, substantially as and for the purpose specified.
3rd. In a printing machine two impression cylinders provided each with one or
more impression surfaces in combination with a series of type forms arranged to
be passed in succession in contact with said cylinders, one of which cylinders
prints from alternate type form, and the other of which prints from those omitted,
nippers arranged upon said cylinder, cams to operate said nippers to catch and
deliver the sheets, transfer frames pivoted to one of said cylinders and adapted to
swing the tail end of the sheet over to the other. cylinder where it is caught by
the nippers before the sheet has left the first impression cylinder, mechanism to
operate said transfer frames at the proper instant and adjusting devices to regulate
the time of operation of nipper cams, substantially as and for the purpose specified.
4th. In a printing machine two impression cylinders provided each with one or
more impression surfaces in combination with a series of type forms arranged to
be passed in succession in contact with said cylinders, one of which cylinders
prints from alternate type form, and the other of which prints from those omitted,
nippers arranged upon said cylinders, cams to operate said nippers to catch and
deliver the sheets, one or more transfer frames substantially as described pivoted
to one of said cylinders and adapted to swing the tail end of the sheet over to the
other cylinder where it is caught by the nippers before the sheet has left the
first impression cylinder cams to operate said transfer frames at the proper instant
and adjusting devices to regulate the time of operation of the said transfer frames
and nipper cams, substantially as and for the purpose specified.
5th. The combination of impression cylinder D, nippers H, pivoted cam L to
operate said nipper, screw S, nut T and frame A, substantially as and for the
purpose specified.
6th. The combination of two impression cylinders each provided with one or
more impression surfaces, two or more type forms arranged to be passed in contact
with said impression surfaces which impression surfaces on one cylinder print from
certain type forms, and those of the other cylinder print from the type forms
omitted by the first, the impression surfaces on said cylinders being adapted to
pass close to each other and in opposite directions, and mechanism consisting of a
transfer frame carried by one cylinder and nippers upon each cylinder the said
parts being so arranged that the transfer frame moves one end of the sheet within
reach of the nippers of the other cylinder by which it is caught at or about the
time it is freed by the nippers on the other or first cylinders to automatically

page_text: transfer the sheet printed on one side directly from one cylinder to the other
and without being received and supported by intermediate stationary devices,
substantially as and for the purpose specified.
7th. The combination of impression cylinders C and D provided with nippers H,
cranks K, pivoted cams Q, L, N, R and R', transfer frames P, cranks O, adjusting
screws S, nuts T, frame A and type form carrying devices substantially as and for
the purpose specified.
8th. The combination of impression cylinder D, nippers H means to operate
said nippers pivoted transfer frame P, and means to operate said transfer frame, at
the proper instant, substantially as and for the purpose specified.
9th. The combination of impression cylinders C and D, and a series of type forms
arranged to be passed in succession in contact with said cylinders, which cylinders
print from alternate form. those omitted by the first being printed from by the
second and inking rolls U arranged to ink the said type forms in their passage
from the first impression cylinder to the second impression cylinder, substantially
as, and for the purpose specified.
10th. The combination of impression cylinders C and D, and a series of type
forms arranged to be passed in succession in contact with said cylinders, which
cylinders print from alternate form those omitted by the first being printed from
by the second, inking rolls U arranged to ink the said type forms in their passage
from one cylinder to the other and a shield U¹ above said inking rolls, substantially
as and for the purpose specified.
11th. The combination of cylinder D having a grooved periphery as at D', a
transfer frame P consisting of arm P¹ and adjustable cross bar P², rod P, crank O
and cam Q substantially as and for the purpose specified.
•
12th. The combination of cylinder D having a grooved periphery as at D³, a
transfer frame P consisting of arm P¹ and adjustable cross bar P², having
notches p2, rod p, crank Ŏ and cam Q, substantially as and for the purpose
specified.
13th. The combination of an impression cylinder and its nippers, cranks K, cams
to operate said cranks pivoted to the axis of the cylinder, socket piece S,
adjusting screw rod S, pivoted nut T and frame A substantially as and for the
purpose specified.