Improvements in Roller Forks or Brackets of Cylinder Printing Machines.
Year: 1896

page_text: Date of Application, 28th Mar., 1896
Complete Specification Left, 28th Dec., 1896-Accepted, 20th Feb., 1897
PROVISIONAL SPECIFICATION.
Improvements in Roller Forks or Brackets of Cylinder Printing
Machines.
FREDERICK ULLMER Printers' Engineer and Material Manufacturer "Standard
Works" Cross Street Farringdon Road London E.C. do hereby declare the nature
of this invention to be as follows:-
My invention applies to methods of improvements in roller forks or brackets and
to methods of regulating the ends of the roller stocks which carry the composition
that inks the type formes on cylinder printing machines.
It is generally admitted that rollers on cylinder printing machines if not held
in position by some means or other in the roller forks or brackets, jump & cause
an uneven distribution of ink on the type forme which is detrimental to good
printing.
My invention is intended to obviate this. There are other methods in use by
various makers of machines intended to answer the same purpose but nothing
similar to that for which I claim provisional protection.
The roller fork is an oblong piece of metal and the lower portion of it is screwed
on the side frame of the machine.
This fork or bracket has slotted holes extending about three parts downwards
and about 3 inches apart. When the rollers are placed on bed or carriage of the
machine the ends of these rollers project say about 1 inch (more or less).
These slotted holes are vertical and just sufficiently wide to admit of the easy
working of the roller when in action.
On the side of each slotted hole 1 let in a steel pillar from the top to the bottom,
and place a spring on each pillar. These springs work smoothly up and down so
as to yield the pressure that may be required. Just below the spring on one of
the sides of each slot I fix a thimble shaped piece. This is hollowed and works
loosely on to the pillar and the end of the spring fits into it. The lower portion of
this piece is made cone shaped so as to fit into a slot on the cross bar which it
keeps securely in position.
On the opposite side of each slot I fix just beneath the spring a cross piece or
bar long enough to extend across the slot from one bar to the other. This cross
piece takes the pressure from the springs to the end of the roller stock when placed
in position across it. This cross piece works loosely up & down & crossways on
the pillar at one end and the other end is slotted so as to grip the other pillar
when in position and it is held in position by the cone shaped thimble piece before
alluded to, acted on by the downward pressure of the spring. This uniform
pressure of the 2 springs on each cross bar when placed on the end of the of the
stock and secured by the thimble piece gives the needed pressure and prevents the
rollers jumping.
To release the roller slightly raise the thimble piece & pull away the cross bar
and the roller stock is free.
My invention for which I ask protection is for an improved roller fork or
bracket with pillar on each side of slot & n spring on each pillar and a cross piece
or bar which operated carries the pressure on to the roller stock and which is then
secured in position by means of thimble piece as described & set forth herein.
Dated this 28th day March 1896.

page_text: Improvements in Roller Forks or Brackets of Cylinder Printing
Machines.
1, FREDERICK ULLMER, of Standard Works, Cross Street, Farringdon Road,.
London, Printers' Engineer, 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:-
The inking rollers of cylinder printing machines, if not held in position in the
roller forks or brackets, jump and cause an unequal distribution of the ink on the
type forme which is detrimental to good printing.
This invention for improvements in roller forks or brackets of cylinder printing
machines has for its object to provide improved meaus for maintaining the ends of
inking roller stocks or spindles in position when in use and also for readily
removing and replacing any given roller when it is desired to do so, and consists
of roller forks or brackets having vertical slots in which the ends of the stocks or
spindles bear, cross bars or heads pressed on to the stocks by springs, and pairs of
guide pillars on which the cross bars or heads slide, one end of each said cross bar
being loosely mounted on one pillar of a pair while the other end is detachably
connected to the other to permit of the removal and replacement of the corre-
sponding inking roller.
In the accompanying sheet of illustrative drawings:-
Fig. 1 is a side elevation of an inking roller bracket constructed according to
this invention, and Fig. 2 is a sectional plan of the same, the section being taken
through the line -a, Fig. 1.
Fig. 3 is a sectional elevation, and Fig. 4 a plan of cross bar for holding roller
stock in position.
The roller bracket a is formed with a horizontal flange b by which it is secured
to the frame or carriage of the machine, and with forks or slots c on the lower end
of which the stocks or spindles d of the inking rollers e bear. Each stock or
spindle d is extended beyond the cheeks to support a cross bar or head g one
end of which is loosely mounted on one of two vertical guide pillars i while the
other end is formed with an open eye 1 greater in diameter than the pillar i and
into which the reduced end of a thimble socket m, sliding on the guide pillars i, fits
in order to detachably connect it to the said pillar. On the guide pillars i are
springs n, one pressing directly on the end h of the head a while the pressure of
the other is communicated to the other end of the head through the thimble
socket m as shown.
It will thus be seen that the cross bar a is normally pressed upon the stock d by
the springs n and is maintained in position by the thimble socket m whose end
fits the circular part of the eye but will not pass through the open jaw o. In order
however to remove or replace a roller the thimble socket m is raised, by hand, out
of engagement with the eye when the cross bar a may be rotated clear of the
stock d as will be readily understood.
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 claim is :-
1. In a cylinder printing machine, the combination with an inking roller bracket
having slots in which the ends of the roller stocks or spindles bear, of a cross bar
or head pressed on the roller stocks by springs, guide pillars on which the said

page_text: cross bar slides, and a thimble socket for securing the cross bar, substantially as
described.
2. In a cylinder printing machine, the combination with an inking roller bracket
of a cross bar having one end mounted on a pillar secured in the said bracket while
the other end is formed with an open eye capable of being detachably secured to a
second pillar by means of a thimble socket, the whole substantially as described and
for the purpose set forth.
3. The improvements in roller forks or brackets of cylinder printing machines.
arranged and constructed substantially as described and shown.
Dated this 24th day of December 1896.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.