Improvements in Sheet Adjusters for Printing Machines."
Year: 1897

page_text: Date of Application, 5th Oct., 1897-Accepted, 11th Dec.,
1897
66
COMPLETE SPECIFICATION.
* Improvements in Sheet Adjusters for Printing Machines."
I, WILLIAM CARTER, of 62 Bothwell Circus, Glasgow, Lithographic Printer,
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:―
This invention relates to the sheet adjusters of letter-press and lithographio
printing machines and it has for its object to improve their construction.
My improved sheet adjuster is very simple in construction and efficient in
action. It can be secured to the usual delivery board or table of the machine
and it requires no connection with the fly shaft.
And in order that our said invention may be properly understood I have here-
unto appended two explanatory sheets of drawings whereon:
Fig 1 is a plan view of the apparatus.
Fig 2 is a detail end view to an enlarged scale of a part of the apparatus.
Fig 3 is a front view of the part shown at fig 2.
Fig 4 is a diagram showing the method of adjusting the "knock-up" slides
for different sizes of sheets.
Referring to the drawings whereon the same reference letters wherever
repeated indicate the same parts.
A is the usual table of a lithographic or letter-press printing machine. B is
the flyer. C is the fly shaft.
The apparatus consists of three adjustable parts which may be secured to the
table in any well known and suitable manner.
The first part consists of a simple arm a which is pivotted at 6 to the table.
Pivotted or hinged to the end of the arm, at d, is a slide block e which is curved
rearwardly at its upper end. The arm a with its slide block e is capable of
being moved radially about the centre b.
The second part consists of two arms f, g, having pivotted or hinged slide
blocks h, i, at their ends similar to the slide block e. The arms f, g, are pro-
vided for longitudinal adjustment with slots ; which are, as shown, centered
upon a, screw stud secured in or to the table. The arms f, g, are capable of
being moved radially about the centre k.
The third part of the apparatus consists of a slide provided with a rearward
extension which is slotted at m. A screwed stud n, secured in or to the table,
projects up through the slot m. Connected hinge-wise to the slide by means
of straps o is a strong wire p which is bent upwards or looped at p¹, p¹, (see
also fig 3) the end of this wire is also bent backwards and upwards as shown
s is a vertical standard
at 2 fig 2 and is provided with an adjustable arm q.
fitted in the slide which has a spiral spring t whose lower end is connected to
the part of the wire aforesaid.
The arms a, f, and g, and slide 7 are preferably fitted to the table by means
of the studs b, k, n, which are secured in blocks c, c¹, 2, (see also fig 4) screwed
in the proper position to the table. The radial arms and the slide can be clamped
to the blocks c, c, c, in the desired position by means of butterfly nuts u which
screw upon the studs of the blocks,

page_text: A longer or shorter arm q may be used as desired.
The flyer has a laterally projecting arm w secured to it.
The blocks c, c¹, c², can be secured in different positions on the table (such
as c, coc¹, c³, c¹², c5, c, fig 4) so as to suit the different sizes of naper.
Fig 4 shows how the radial arms and the slide 7 can be shifted for sizes of paper
from Demy folio up to Q. Crown.
Presuming that the radial arms a, f, g, and their blocks e, h, i, and the slide
have been properly adjusted and clamped in position to suit the size of sheet
being printed, the action of the device is as follows:-
-
g
As the flyer delivers each sheet the bar w strikes against the arm and
depresses it and, as a consequence, forces back the wire p against the action of
the spring to an inclined position so as to allow the sheet to fall down. Im-
mediately the flyer rises again after the delivery of the sheet the spring t causes
the wire p to resume its former vertical position and, as a consequence, auto-
matically knock the sheet into place on top of the pile.
The dotted lines at figs 1 and 2 indicate the position of the wire P when
depressed by the action of the bar w.
The blocks h, i, are made narrow enough to pass between the flys of the flyer.
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'
consider novel and desire to claim is:
1. A sheet adjuster having a slide, or its equivalent, provided with an arrange-
ment which after being moved out of its normal position by the action of the
flyer, at the delivery of the sheet, automatically resumes its position, after the
delivery has been effected, and thereby "knocks up" the sheet, substantially as
hereinbefore set forth.
2. In a sheet adjuster, adjustable arms, such as f, g, made so as to be capable
of a radial movement about a centre and also a longitudinal movement, substan-
tially as herein before described and shown on the drawings annexed.
"
3. In combination, the automatically acting "knocking up" device, the adjust-
able radial arms f, g, with their blocks h, i, and the adjustable radial arm
with its block e, all substantially as hereinbefore described with reference to the
drawings annexed.
Dated this 4th day of October 1897
H. D. FITZPATRICK
70 Wellington Street, Glasgow, Agent.