HAVOND Constructing Printing Surfaces or Formes.
Year: 1886

page_text: Apparatus
HAVOND
Constructing Printing Surfaces or Formes.
I EDGAR KÖNIG of Kloster Oberzell near Wurtzburg in the Kingdom of Bavaria
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 for its object to provide simple and efficient means whereby
stereotype or other blocks may be readily combined with types and arranged in
any desired position in a printing forme and whereby the formes may be more
securely retained in position than heretofore.
And in order that the said Invention may be clearly understood I will now
proceed to describe the same with reference to the accompanying drawing.
Figure 1, of which represents diagrammatically a printing cylinder illustrating
the invention and Figure 2 is a plan of the forme complete.
According to this Invention the columns separating rules or edges r which are
arranged parallel to the page separating or central strip m are provided with
projecting ribs or flanges a fitted to slide in corresponding grooves formed in the
contiguous edges of the tightening strips or bands q which constitute the bed for
the types and blocks. Instead of arranging these tightening bands circum-
ferentially and transversely to the cylinder as heretofore whereby pressure is
exerted only at intervals in the length of the column separating ledges or rules,
and whereby the formes are only imperfectly secured they are arranged according
to this Invention parallel to the separating rules or ledges upon which, when the
forme is being tightened up, they exert a uniform pressure throughout their entire
length and during the insertion and adjustment of the forme they allow of the
easy longitudinal movement of the ledges or rules for the insertion or removal of
blocks or any part of the forme.
+
The tightening bands q are provided on their under sides and near their opposite
ends with two dovetail projections fitted to slide in corresponding circumferential
grooves or guide ways provided in the frame e whereby the said tightening bands
are guided into position whilst being tightened up.
Chambers or recesses W are provided at the ends of the frame, of a width equal
to about or of the length of the columns 8 so that when a ledge is moved back
(supposing the width of chambers W to be equal to one half of the length of the

page_text: columns S) it cannot be withdrawn beyond one half of the length of the columns
and therefore enables a stereotype or other block equal to one half the length of
the column to be freely inserted into the forme. For the purpose of rendering the
displacement or adjustment of the ledges r and the arrangement of blocks in the
forme absolutely optional, a number of sets of ledges r of various lengths are
provided in addition to the set of ledges of equal length to the columns S one
additional set being equal to one half of the length of the column one set equal to
one third of the length of the columns and one set equal to one quarter the length
of the column and so on. These column ledges are each provided at one end with
a number of small projections say about 3 inches long which enter corresponding
holes or grooves provided in the stereotype or other blocks for the purpose of
retaining the said blocks firmly in position as hereinafter described.
The column ledges or rules r are formed in the well known manner by drawing
lines tangential to a circle t described around the axis of the cylinder and of a
diameter equal to the width of the columns S; whereby as many rectangles are
obtained as required.
The type bed shown in Figure 2 is adapted to receive a forme of four pages each
page containing four columns. The pages are separated from each other by the
central strips or pieces m¹ m¹ arranged circumferentially on the cylinder and a
strip or piece m arranged longitudinally on the cylinder. When a column only
consists of types the ledges or rules rare slid close up to the transverse centre
piece m¹ but when stereotype or other blocks are combined with types the said
ledges or rules r may be withdrawn to admit of their insertion.
When a stereotype or other block is wider than a column as shewn at C Figure 2
for example its position may be adjusted as required by employing ledges of the
requisite length in order to form first the part of column S which is next to the
centre piece m¹ one of the ledges r of the smaller sets being inserted into the slide
way of the tightening bands 9 and slid therein up to the said centre piece m¹;
against this ledge or rule the stereotype or other block is placed so that the
projections on the ledges r enter the recesses herein before described in the block;
another ledge or rule r is now slid in the grooves of the bands 9 up to the block
this ledge completing the column S the remaining part of the ledge equal to the
length of the block inserted being in the chamber W.
The blocks necessary for securing electro type in the frame e are cast thereon in
a suitable mould shaped to correspond to the curve of the bed to which they are to
be fixed the said moulds being formed with adjustable ledges or pieces so that
blocks of any desired size may be cast and provided on either side with the
necessary bevels to fit the column ledges r the depth of these blocks must however
be less than that of the type composition by the thickness of the electro-type.
These blocks when removed from the mould are ready for use and are only to be
cut to the shape or size required which may be effected by means of a circular saw.
In order to reduce the weight of the blocks steel rods varying in number according
to the width of the block are placed in the mould which rods are afterwards
removed from the block when it is cast, leaving a corresponding number of holes,
which holes are adapted as aforesaid to receive the projections on the ledges r.
An important feature resulting from the arrangement of the adjustable column
ledges as described is the maintenance of the type forme.
The stereotype or other blocks adjusted and secured in the forme as hereinbefore
described produce upon the type a tightening action similar to that of the ledges r.
The printing formes are fitted in the following manner.
The types and stereotype or other blocks to compose the forme are placed in
position on the bed or bands q which are not sufficiently tightened up as to
prevent the column ledges r being displaced or withdrawn and inserted as required
and then the stereotype or other blocks are suitably arranged in place and ledges r
are adjusted against them as shewn for example in Figure 2 where the blocks C
are arranged within the columns S. the type is inserted in the spaces left blank as
shewn in the columns S¹ S³ Figure 2

page_text: The form is then tightened up on both sides towards the central cross piece m'
by means of screws a which are located in the rims or flanges Z of the frame e
which rims are provided with passages for the introduction of the column ledges T
into the chambers W. the said screws being so distributed that each column S is
acted upon by one screw a. The ends of these screws press upon steel bands w
interposed between them and the column ledges and the latter in their turn exert a
uniform pressure upon the types contained in the column.
In order that the pressure on the opposite end of the column may be equal steel
pieces are interposed between the types and adjusting screws i in the centre
piece m¹.
Towards the parallel centre pieces m the forme is also tightened on both sides by
wedges k k¹.
The wedges k¹ are connected to the iron body e by means of screws, wedges,
kare adjustable to the wedges k¹ by screws d and d so that they press upon the
pieces n which bear against the bands q which in their turn act on the column
ledges r. By these means the forme is tightened at the lower part while at the
top the required tension is obtained through the direct pressure of the pieces n
upon the types.
The type bed thus prepared is attached to the printing cylinder by means of
bolts as shewn at p.
If only two pages are to be employed on a type bed the arrangement will be
much simplified as the bed may then be only half the width of that hereinbefore
described and it then only retains the parallel centre pieces m while the centre
pieces m¹ may be dispensed with and the piece Z and chamber W substituted
therefor whilst if stereotype or other blocks are to be inserted the column ledges r
may be operated in either or both directions as required and therefore, the number
of sets of column ledges r may be considerably reduced.
The tightening device of such a two column type form remains unaltered.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed what I claim is:-
First Apparatus or means for preparing or constructing printing surfaces or
formes consisting of the tightening bands q arranged in the direction of the
columns in combination with column ledges or rules r upon which a uniform
pressure is exerted throughout their line of contact whereby a closer tightening up
of the formes is obtained substantially as described and shewn.
Second-The column ledges or rules provided with projections which enter
corresponding holes or recesses in the stereotype or other blocks so as to securely
retain the said blocks in position substantially as herein before described.
Third: The general construction combination and arrangement of parts
constituting means for constructing printing surfaces or formes substantially as
herein before described and illustrated by the accompanying drawings.
J. HENRY JOHNSON,
Agent for the said Edgar König.