Improvements relating to Blocking Presses for Printing upon Book Covers.
Year: 1890

page_text: Date of Application, 5th Mar., 1890
Complete Specification Left, 24th Sept., 1890-Accepted, 1st Nov., 1850
PROVISIONAL SPECIFICATION.
Improvements relating to Blocking Presses for Printing upon
Book Covers.
I, GEORGE EDWIN CHAPMAN, of Rivington Street, Curtain Road, in the County
of Middlesex, Album Manufacturer, do hereby declare the nature of this invention to
be as follows :-
:
My invention relates to blocking presses used for printing upon book covers, the
object of the invention being mainly to secure a more uniform distribution of ink
over the face of the block than is possible with the ducts and inking plate at present
used for this purpose and to avoid the waste occasioned by the use of the said ducts
and inking plate.
In carrying out my invention I adapt to the rear of the blocking press a roller to
which the ink is supplied as required by an attendant; this roller is in contact with
another roller, both rollers being rotated by the attendant or by power. To the first
named roller I apply a number of division pieces arranged to slide and turn on a bar,
so that any of them can be moved to any required position upon the roller for
blending and be there secured or be turned over out of the way. Upon the rear end
of the bed of the press I pivot rollers in such a manner that when the bed is moved
backwards they come into contact with the second roller herein before referred to and
receiving a supply of ink therefrom transfer it to the surface of the block in the return
or forward motion of the bed.
By these improvements labour is economised as the rollers do not have to be passed
over an inking plate as hitherto the workman has only the weight of the bed to move
and will therefore be able to work at a quicker rate of speed and he will not have to
frequently pass to the rear of the machine to attend to the ink. Further the ribs
on which the bed slides can be much shortened because the required traverse of the
bed is so much shorter and this besides lessening the labour of the workman, gives
him greater power over the lever handle of the press as he can reach it so much
more easily.
G. F. REDFERN & Co.;
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements relating to Blocking Presses for Printing upon.
Book Covers.
J
I, GEORGE EDWIN CHAPMAN, of Rivington Street, Curtain Road, in the county
of Middlesex, Album Manufacturer, 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 stateinent:— .
My invention relates to blocking presses used for printing upon book covers, the
object of the invention being mainly to secure a more uniform distribution of ink
over the face of the block than is possible with the ducts and inking plate at present
used for this purpose and to avoid the waste occasioned by the use of the said ducts
and inking plate.
In carrying out my invention I place at the rear of the blocking press a roller
rotated by the attendant or by power. To the said roller I apply a number of division"
pieces on a slotted bar or knife so as to form ducts or troughs to which ink is supplied
as required by an attendant. The said division pieces are adapted to be slid along
the duct bar or knife, and to be bolted through the slot therein so that any-of-them
'מ
077

page_text: can be moved to any required position upon the roller for blending and be there
secured; or they can be removed from the duct bar or knife. Upon the rear end of
the bed of the press I pivot the usual inking rollers in such a manner that when the
bed is moved backwards they come into contact with the roller hereinbefore referred
to and receiving a supply of ink therefrom transfer it to the surface of the block in
the return or forward motion of the bed.
In order to enable my invention to be fully understood 1 will describe how it can
be carried into practice by reference to the accompanying drawing in which,
Figure 1 is a sectional plan and,
Figure 2 is a sectional elevation of so much of a blocking press for printing upon
book covers as is necessary to illustrate my invention and shewing my improvements
applied thereto.
Figure 3 is a view of a detail.
Similar letters in all the figures indicate similar parts.
a, a represent the frame of the press, b is the block, c the bed, d, d the ribs or
guides on which the bed slides and e, e the inking rollers carried by the bed call of
which parts are of usual construction.
fis the roller which I place at the rear of the blocking. press, the said roller being
mounted in brackets g, carried upon a standard h.
i is the duct bar or knife, in the space between which and the roller f the ink is
placed. The ends j of the knife are adapted to slide in slots k in the brackets g, so
that the position of the knife i relatively to the roller can be adjusted, so as to supply
more or less ink to the roller, by means of set screws 1, 1, 1, 1 working in brackets m,
m, m, m and bearing against the knife i.
n, n, n are the division pieces (three of which are shewn in Figure 1 but which
number will vary according to requirements) provided with screw-pins or bolts o,
located in a slot p in the knife i, whereby they can be fixed to or removed from the
knife, or loosened and moved to any required position thereon. By means of the
adjustable division pieces n the ink can be applied to any part or parts of the length
of the roller and in case of inks of several different colours being required the
division pieces can be adjusted to form receptacles for the various colours at the
required parts of the roller f.
The roller can be arranged to be rotated by the attendant but in the drawing
I have shewn it adapted to be operated by power.
In the latter case I find it
advantageous to mount fast and loose pulleys q and respectively on the spindle of
the roller f, and to employ a striker constructed of a swinging shifter-forks, pivoted
at t to a standard u. Between the prongs v, v of the fork passes the driving strap.
The swinging fork is provided with a weighted arm w beneath which strikes an arm
on the bed c of the press when the latter is pushed inwards.
The operation is as follows:-Suppose the parts to be in the position shewn in the
drawing and the distance pieces n adjusted and the divisions thereby formed supplied
with ink of the required colour or colours for printing the book-covers, when the
bed c is moved inwards the arm a will raise the arm w and move the swinging-fork s
into the dotted position shewn in Figure 3, thereby shifting the driving strap from
the loose pulley r onto the fast pulley q.
The roller is thus caused to rotate not less than one revolution and take up just
a sufficient quantity of ink from the duct knife for one cover which it transfers to
the inking rollers e, e which are now in contact therewith.
Upon the bed c being moved back the weighted arm w will carry back the fork s
and the strap will be thereby shifted onto the loose pulley and the roller stopped.
The bed in returning to the position shewn will draw the inking rollers e, e over the
block 6 so as to ink the face thereof ready to print the book-cover placed on the bed c
at the next inward movement of the same, during which movement the inking rollers
will receive a fresh supply of ink for inking the block b on the outward movement
of the bed and so on.
By these improvements labour is economized, as the rollers e, e do not have to be
passed over an inking plate as hitherto, the workman has only the weight of the

page_text: bed c to move and will therefore be able to work at a quicker rate of speed and he will
not have to frequently pass to the rear of the machine to attend to the ink. Further
the ribs d on which the bed c slides are much shorter than heretofore, because the
required traverse of the bed is so much shorter and this besides lessening the labour
of the workman, gives him greater power over the lever-handle of the press as he
can reach it so much more easily.
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. The combination with a blocking press for printing upon book covers, of a slotted
bar or knife placed in close proximity to the face of an ink roller, so as to form a
receptacle for the ink, and movable division pieces adapted to divide the said receptacle
into sections for receiving inks of various colours, and to be secured to the bar or knife
by means of bolts passing through the slot therein, substantially as hereinbefore
described and illustrated in the accompanying drawing.
2. The combination with a blocking press for printing upon book covers, of a slotted
bar or knife, division pieces and ink roller such as those referred to in claim 1, and an
automatic striker, whereby the driving strap is caused to rotate not less than one
revolution the ink roller only during the time the press is being operated, substantially
as hereinbefore described with reference to the accompanying drawing.
3. The improved blocking press for printing upon book covers hereinbefore
described and illustrated in the accompanying drawing.
Dated the 24th day of September 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.