Improvements in Printing Presses or like Apparatus.
Year: 1890

page_text: e of Application, 22nd July, 1890-Accepted, 23rd Aug., 1890
COMPLETE SPECIFICATION.
Improvements in Printing Presses or like Apparatus.
I BERTHOLD HUBER of Taunton, in the County of Bristol and State of Massa-
chusetts one of the United States of America, Manufacturer of Printing Presses 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:
a
This invention has for its object to provide a printing press with means whereby a
reciprocating bed to carry the type or form, and a co-operating cylinder having
tympan may be moved at the same surface speed for most of the length of the stroke
of the bed, to thus obviate any blurring of print or injury to the paper.
My invention consists in the cylinder, its attached gear, an annular plate, and a
radially slotted uniformly rotating gear supported upon said plate near its circum-
ference, combined with a ring gear mounted upon the circumference of said plate,
and a crank pin between it and the uniformly rotating gear sliding in the slot in the
latter to rotate the ring gear at a variable speed, the latter engaging and actuating
the gear attached to the cylinder, substantially as will be described.
ther features of my invention will be pointed out in the claims at the end of
this specification.
Fig. 1 is a partial side elevation and section in the line a Fig. 3, of a printing
press embodying my invention.
Fig. 2 is a section in the line x, x, Fig. 1.
Fig. 3 is a section in the irregular line ¹, Fig. 2.
Fig. 4 is a section in the line 2, Fig. 1.
Referring to the drawings, A represents a framework of suitable shape to sustain
the various working parts.
The frame-work A has suitable bearings for the reception of the main shaft B
provided with a suitable belt or other pulley or wheel B¹ by which power is applied
to rotate the said shaft.
The shaft B has a beveled gear bat its inner end which engages a beveled ring-
gear & fitted to turn about an annular guide & suitably supported upon a brace or
stand .
The beveled gear referred to has a crank pin or stud c which enters a block free
to travel in a slot or way formed in the under side of a girt or bar c², see Figs. 3
and 4, forming part of an actuating slide having at its opposite sides two like rick-
bars & adapted to slide in guides at the inner sides of the frame-work, as best
represented in Fig. 3.
The rack-bars of the actuating slide engage like gears d', one shown fully in
Fig. 2, by breaking away one of the said rack-bars, the said gears being fast on a
shaft d, each gear being located just inside the frame-work.
The shaft has upon it near its center a gear f which engages a toothed rack/'
attached to the bed on which is placed the usual form f³.
The bed reciprocated through the rack bars d of the actuating slide engaging
the pinions d' is moved at a speed which varies as the bed arrives at the ends of its
stroke and is about to be reversed, there being more or less of a dead point duo to
the employment of the crank c in the groove of the girt or bar c².
The shaft B also has upon it a pinion e which engages a toothed gear e' mounted
upon a stud e, shown best in Fig. 2, as supported upon and near the circumference
of an annular plate e suitably secured to the outer side of the framework of the
machine.

page_text: The annular plate referred to, see Fig. 2, is reduced to receive upon it a ring-
gear e provided with a stud e surrounded by a block e which block enters a radial
slot e' in the toothed gear. el, the said gears e¹ and et thus being mounted eccentrically,
one with relation to the other, as described.
The rotating cylinder Chaving the tympan his mounted upon a shaft C' having
attached to it near one end a toothed gear C2, the said gear being engaged by and
deriving its movement from a ring gear which is rotated at a variable speed
through the sliding crank pine carried by the gear ', the variation in speed of the
ring gear being so proportioned as to cause the surface speed of the bed and the
form thereon and of the tympan of the cylinder C to travel at substantially
the same surface speed so long as the face of the tympan is opposed to the form f³,
the said form being opposite the tympan for most of the time that the bed is moving
from one to the other end of the stroke.
The reciprocating plain surface or bed and the cylindrical surface Care common
to bed and cylinder printing presses.
The rotating cylinder and the reciprocating bed fare both actuated by gearing
on one and the same driving shaft and in actuating both the cylinder and the bed
there is interposed between the shaft and cylinder in one instance and the shaft and
bed in the other instance, a crank, so that the surface speed of the cylinder varies
during each rotation, and so also the surface speed of the bed varies during each
complete stroke, yet these variations are so arranged as to time that while the
tympan of the cylinder is opposite the form on the bed and printing is being done,
the surface of the cylinder and the surface of the bed move at substantially the same
speed.
I have shown my invention as applied to a printing press but I desire to hold
the same if applied to any other class of machine wherein like movements are
desired.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be employed, I declare that what I
claim is :-
:
1: The combination in a printing press or like apparatus of the following
instrumentalities, viz. a cylinder having a tympan; a bed to support the form; a
main driving shaft provided with pinions; and intermediate mechanism between
the said shaft and the said cylinder and the said shaft and the said bed, each of the said
intermediate mechanisms containing as one member, a crank whereby on the rotation
of the said main shaft, the surface speed of the rotating cylinder and the surface speed
of the reciprocating bed are made to correspond at all times while the tympan is
opposite to the bed, as when printing is being done; the combination being and
operating, substantially as described.
2: The cylinder, its attached gear c², the annular plate e³, and the radially
slotted uniformly rotating gear el supported upon said plate near its circumference,
combined with the ring gear e mounted upon the circumference of said plate
eccentric to the gear e¹, and a crank between it and the latter gear sliding in the
slot therein to rotate the gear et at a variable speed, the said gear engaging and
actuating the gear C, substantially as described.
3:-The bed and its attached rack, the shaft having pinions d', f, and the
actuating slide having a rack, combined with a rotating gear b', and a crank pin
actuated by it to reciprocate the said actuating slide, substantially as and for the
purposes set forth.
In a printing press or like apparatus, the following instrumentalities, viz.
rotating cylinder having a tympan, a gear C, the gear e engaging the gear C the
gear mounted eccentrically with relation to the gear e, a movable crank to
connect it with the gear ea reciprocating form carrying bed having a rack, the
shaft d having gears d¹ and f, the actuating slide having a rack and slotted a

page_text: described, the beveled gear
and crank pin to connect it w
slide, combined with the shaft B having gears b and e, to operate, substantially as
described.
189
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.