Improvements in Feed Tables of Lithographic Printing Machines.
Year: 1894

page_text: Date of Application, 13th Mar., 1894
Complete Specification Left, 13th Dec., 1894-Accepted, 26th Jan., 1895.
PROVISIONAL SPECIFICATION.
Improvements in Feed Tables of Lithographic Printing Machines.
I, MOSES TAYLOR, of 100, Grosvenor Road, Bristol, Ironmonger, do hereby
declare the nature of this invention to be as follows:-
This invention has reference to the feeding tables of lithographic printing
machines and consists in furnishing the said tables, both top and front, with grooves
extending parallel with the sides of the tables. Fitted to take into and be moved
in the grooves are guides which can be moved from any groove into any other.
The guides when inserted in the grooves project above the face of the tables which
are thus capable of being divided into sections of which the guides constitute the
side limits. The sections may vary in width. Accordingly, sheets of different.
sizes may be fed to the gripper at one and the same time and in numbers corre-
sponding to the number of sections into which the table is divided. The grooves
may be formed by securing strips of steel or other suitable metal or material to a
backing of wood or the like, and placing over such strips broader strips. Or, the
tables may be cast with the grooves in them, or, the grooves may be cut in the
tables.
With tables of the kind above described the output is capable of being greatly
increased. The side guides or gauges usually employed in lithographic printing
machines are dispensed with.
...
1 1004
NICHOLAS WATTS,
Bristol, Chartered Patent Agent.
COMPLETE SPECIFICATION.
Improvements in Feed Tables of Lithographic Printing Machines.
I, MOSES TAYLOR, of 100, Grosvenor Road, Bristol, Ironmonger, 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 has reference to the feeding tables of lithographic printing
machines and consists in furnishing the said tables, both top and front, with
grooves extending parallel with the sides of the tables. Fitted to take into and be
moved in the grooves are guides which can be moved from any groove into any
other. The guides when inserted in the grooves project above the face of the
tables which are thus capable of being divided into sections of which the guides
constitute the side limits. The sections may vary in width. Accordingly, sheets
of different sizes may be fed to the gripper at one and the same time and in
numbers corresponding to the number of sections into which the table is divided.
The grooves may be formed by securing strips of steel or other suitable metal or
material to a backing of wood or the like, and placing over such strips broader
strips. Or, the tables may be cast with the grooves in them, or, the grooves may
be cut in the tables. ingura
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The invention is, specially designed for use in printing on paper bags of which an
increased number can be fed to the gripper at the same time.
At Fig. 1 in the accompanying sheet of drawings is represented a front view,
and at Fig. 2 a side view, partly in section, of a. portion of a feeding table for
lithographic printing machines, the said table being provided with grooved faces
and guides in accordance with one method of carrying my invention into effect.
According to this method, strips a of steel or other suitable metal are attached,
by screws or other means, to the table c at suitable distances apart.
Superposed on the strips a are broader strips d secured by the same screws b to
the table c of which both the horizontal part or top and the inclined face are fitted
alike. The spaces between the strips constitute 1-shaped grooves e into which are
received guides fa vertical section of one of which is shown at Fig. 3. The feet
of the guides take into the grooves. The guides for the horizontal part of the
table are slid into the grooves from the rear; the guides for the inclined face of
the table being slid into the grooves from the upper end of the said inclined part.
The guides fit the grooves sufficiently loosely as to be capable of being readily
inserted or withdrawn, and sufficiently tightly as to remain stationary on the incline
in the position to which they are slid. Stops may, however, be provided for
preventing the inclined guides falling out at the lower end of the inclined face.
The guides on the table-top are made higher than those on the face inasmuch as the
- papers to be printed are piled in a pack on the top, whereas they are fed singly.
down over the incline to the gripper.
The guides can be inserted in any groove and hence the table is capable of being
divided into several sections of the same or varying widths of which the guides
constitute the side limits. The portion of the table shown at Fig. 1 is represented
as divided into two sectious of unequal width for printing on paper or bags of
corresponding widths. The slotted pivotted side guides or guages usually employed
in lithographic printing machines are dispensed with.
At Fig. 4 is shown in front view and at Fig. 5 in end view a modified form of
guide in which the guide is furnished with a limb f which, by means of the
screws and springs 3, is adjustable towards and from the guide over the strips d.
The limb f' may be set to lie at any desired angle to provide for deviations from
square setting of the representations on the stone, or for the said representations
being otherwise "out of truth." This form of guide also facilitates "registering,"
that is to say, accurate placing of different colours or shades in the same picture.
Instead of obtaining grooves for the guides by using metal strips and placing over
them other metal strips of greater width, the tables may be fitted with plates or
slabs in which the grooves have been cut in a machine or otherwise, or have been
formed in casting such plates or slabs.
In lithographic printing machines having feeding tables fitted, in accordance
with this invention, with guides fitting into grooves into which they are readily
inserted and from which they are readily withdrawn, the output of printed matter
is greatly increased inasmuch as a greater number of sheets or bags can be fed at
the same time into the gripper.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what: I
claim is :-
1. In a lithographic printing machine, the provision of longitudinally channelle 1
or grooved faces either on both the horizontal and inclined parts of the feed tables,
or on the latter only, and of guides fitted for ready insertion in and withdrawal
from the said grooves and for transfer from any one groove to any other,
substantially as and for the purposes hereinbefore described.
2. In a lithographic printing machine, longitudinally channelled or grooved
faces for the feed tables constituted by the use of strips such as a, of steel or other
suitable metal, secured to the tables and having superposed thereon metal strips
such as b secured to the tables and projecting at each side over the edges of the

page_text: strips below them, substantially as hereiubefore described with reference to the
accompanying sheet of drawings.
3. In a lithographic printing machine, guides such as e with 1-shaped feet
adapted to be slid into and out of correspondingly shaped grooves provided on the
faces of the feed table, as hereinbefore described with reference to the accompanying
drawings.
4. The modified guide with adjustable limb f¹ hereinbefore described with
reference to Figs. 4 and 5 of the accompanying drawings and for the purposes set
forth.
Dated this 10th dox of December 1894
NICHOLAS WATTS,
Bristol, Chartered Patent Agent.