An Improvement in Cylinder Printing Machines.
Year: 1899

page_text: Date of Application, 2nd May, 1899
PROVISIONAL SPECIFICATION.
An Improvement in Cylinder Printing Machines.
We, JAMES HUNTER, of 3, Priory Street, Byker, in the City and County of
Newcastle-upon-Tyne, Printer, and WILLIAM HUNTER, of 11, Mandale Road,
1 hornaby-on-Tees, in the County of York, Stationer, do hereby declare the
nature of this invention to be as follows:
This invention effects an improvement in cylinder printing machines and
relates to the means whereby the usual reciprocating motion is imparted to the
steel roller above the inking rollers and which is technically termed the "rider."
And furthermore it can be readily applied to printing machines in which the
inking rollers are not geared.
This reciprocating motion of the "rider" which is essential to the proper
distribution of the ink over the ink rollers has hitherto been derived from the
main shaft of the printing machine, cumbersome mechanism being employed
to effect the requisite connection.
By this invention all such mechanism is dispensed with and by means of the
simple device hereinafter described the requisite reciprocating motion is derived
from the cog shaft which gears the inking rollers to the racks.
On this cog shaft we provide a worm and in a corresponding position on the
"rider" shaft a grooved disc so that a worm block fitting the said worm is
adapted to engage with the grooved disc by means of arms or claws extending
and fitting into the said groove at opposite sides of the shaft. As the cog shaft
revolves the action of the worm moves the worm block along, which motion is
imparted to the "rider," and as the cog shaft runs so far in each direction and
then reverses, it will be seen that a reciprocating motion is imparted thereby
to the "rider."
An Improvement in Cylinder Printing Machines.
We, JAMES HUNTER, of 6, Clydesdale Road, Byker, in the City and County of
Newcastle-upon-Tyne, Printer, and WILLIAM HUNTER, of 23. Inkerman Street,
Stockton-on-Tees, in the County of Durham, Stationer, 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 effects an improvement in cylinder printing machines, and
relates to the means whereby the usual reciprocating motion is imparted to the

page_text: steel roller above the inking rollers and which is technically termed the "rider."
And furthermore it can be readily applied to printing machines in which the
inking rollers-are not geared.
The reciprocating motion of the "rider" which is essential to the proper
distribution of the ink over the ink rollers has hitherto been derived from the
main shaft of the printing machine, cumbersome mechanism being employed
to effect the requisite connection, such as cams or eccentrics.
By this invention, all such mechanism is dispensed with, and by means of the
simple device hereinafter described, the requisite reciprocating motion is derived
from the cog driving wheel which gears the steel rider to the rack. On this
cog driving wheel is fitted a shaft, on which we provide a worm and in a
corresponding position on the. "rider" shaft a grooved disc, so that a worm
block fitting the said worm is adapted to engage with the grooved disc by means
of arms or claws extending and fitting into the said groove at opposite sides
of the shaft.
As the cog driving wheel and shaft revolves, the action of the worm moves
the worm block along, which motion is imparted to the "rider," and as the
cog driving wheel runs so far in each direction and then reverses, it will be
seen that a reciprocating motion is imparted thereby to the "rider."
The invention will be clearly understood by reference to the annexed drawings
which show at the end elevations, Figures 1 and 2, how the rider" receives
its reciprocating as well as a rotary motion in accordance with the foregoing
description.
A, steel "rider" which reciprocates above inking rollers A¹.
B, cog driving wheel which is revolved by cog rack Bl
C, cog driven wheel which is attached to spindle of steel "rider" A and
revolves same by gear of B. D. grooved disc engaged by claws of worm
block D which is connected to and driven to and fro by wormed shaft E, the
said shaft being fitted to cog-driving wheel B.
F, frame top on which all brackets and bearing are fitted. The rack B
runs the full length of machine table and is fixed, so that when the table
reverses, the rack reverses the cog wheels B and C. The table on which the
type forms are fixed travels to and fro in the operation of printing. G, G¹,
brackets supporting the "rider" A from both ends, the bracket G alone having
the worm shaft E of driving wheel B and forms a bearer for " rider" A.
The inking rollers A¹ are driven by being placed in contact with "rider" A.
H, pin which is connected to worm block D' and keeps same upright.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what
we claim is:
f
1. In a cylinder printing machine, "rider" A, broad faced toothed wheel C
on shaft of rider," gear wheel B on screw threaded shaft E, travelling worm
block D thereon with arms in groove of disc D acting as and in the manner
and for the purpose specified.
2. In a cylinder printing machine, the rack motioned pinion B on threaded
shaft E carrying traversing block D' for reciprocation of "rider" A in combina
tion with rotary action by the gears B, C, as specified.
The 7th Jove of N 1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said James Hunter and William Hunter.