Year: 1886

page_text: We, GEORGE NEWSUM of 5 Fairfax Road, Beeston Hill, Leeds, in the County of
York, Engineer, and HENRY KITCHEN ASHWELL, of 8 Pullans Place, Beeston,.
Leeds, aforesaid, Engineer, do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to construct the frame of the machine for carrying
the main driving shafts and wheels to which the connecting rod is attached for
actuating the table in such a manner, that the bearings carrying the divided shafts
are more rigid and not so liable for the shafts to become twisted or out of line
with each other, as when the frame is constructed in the ordinary manner; and
to so arrange and operate the brake strap, that the same is kept tight on the brake
pulley, so long as the cylinder is out of gear with the moving table; and to take
out the back lash in the cylinder gearing.
We accomplish our object in the following manner: The portion of the frame to
which the brackets are attached for supporting the driving shafts and wheels we
cast in one piece along with the said brackets, so that the brackets form part of
the said frame, and therefore cannot move out of the relative position to each
other.
The frame and brackets thus prepared are placed between the side frames of the
machine and bolted thereto, flanges being prepared on which the frame rests.
. In order to arrange the break strap so that the same is constantly griping the
break pulley during the time the cylinder is out of gear with the reciprocating
table of a Litho or Letter press printing machine, we form a path on the circum-
ference of the revolving break pulley, which comes in contact with an arm at. the
time the cylinder is in the position for receiving the sheet, thus keeping the break
clip tight on the pulley so long as the cylinder remains out of gear with the table.
When desirable the back lash in the gearing of the cylinder and table may be
taken up by placing another path on the brake pulley in such a position and size,
that the brake clip is brought in contact with the said pulley immediately before
the paper receives the impression thereby ensuring the proper relative position
between the cylinder and table.

page_text: '
Improvements in Litho and Letter-press Printing Machines.
We, GEORGE NEWSUM, of 5 Fairfax Road, Beeston Hill, Leeds, in the County
of York, Engineer, and HENRY KITCHEN ASHWELL, of 8 Pullans Place, Beeston,
Leeds, aforesaid, 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 object of this invention is to construct the frame of the machine for
carrying the main driving shafts and wheels to which the connecting rod is.
attached for actuating the table, in such a manner, that the bearings carrying
the divided shafts are more rigid, and not so liable for the shafts to become
twisted or out of line with each other as when the frame is constructed in the
ordinary manner; and to arrange and operate the brake strap, that the same is
kept tight on the brake pulley so long as the cylinder is out of gear with the
moving table, and to take out the back lash in the cylinder gearing before an
impression is taken; and consists in forming the frame and brackets for supporting
the divided shafts, in one casting, arranged to rest on flanges on the side frames;
and to operate the brake strap so as to put a little pressure on the brake pulley
immediately before an impression is taken, and to bring the cylinder to a gentle
stoppage without vibration..
In explaining this invention more in detail, reference is made to the accom-
panying drawings in which Fig. 1 represents a side elevation of the frame of a
litho or letter-press printing 'machine, with one of the side frames removed to shew
the interior, Fig. 2 is a transverse section, Fig. 3 a sectional detail of the bottom
portion of the side frames and intermediate frame, and Fig. 4 an end view of the
brake pulley and strap.
The side frames A are prepared with a projecting flange B on the inside, which
are planed to a straight and level surface: and the intermediate frame Ċ along
with the brackets C' for supporting the divided shafts, are cast in one piece, with
a recess on each side, which are planed to lay on the flanges B of the side frames A,
thereby supporting the frame independently of the bolts A¹ for securing the same,
thus simplifying the construction and allowing the intermediate frame to be easily
removed for repairs, and when replaced to occupy the same position without so
much adjustment. as is now the case with intermediate frames and brackets in
sections constructed in the ordinary manner.
The machine table E is operated by the usual wheels which are coupled together
by a crank pin and connected to the table by a rod in the ordinary manner; and
the impression cylinder is mounted and driven in the usual manner by spur wheels
at each end of the cylinder, geared to 'the latter by any well known method by
which it is made to revolve in one direction only, and the wheels allowed to
revolve in both.
When the table is completing its traverse after printing, and immediately before
it arrives at its termination, the raised path G on the brake pulley flange comes in
contact with the pulley H on the lever J one end of which is mounted on a fixed

page_text: stuḍ secured to the frame of the machine By the raised path coming in contact
with the pulley in the manner described, the lever is operated so that the strap K
which is attached thereto, grips the brake pulley to such an extent that the
cylinder is stopped gradually, without vibration, and keeps it stationary during
the return of the table.
The raised path G is of such length that the brake clip is kept in slight contact
with the pulley until the table has traversed forward such a distance that the
impression is about, or just commenced to be taken, when it is released, thus by
these means, any back lash there may be in the teeth is removed, thereby
ensuring a perfect register.
When feeding either one or two sheets to the cylinder, the latter is stationary
with the brake clip or strap K on the pulley as described, and the first sheet fed
from the lower feeding board L, the cylinder gripping .the sheet on beginning to
rotate receives the impression in the ordinary manner, and the brake clip or
strap K released at the time before mentioned. The second sheet, fed. from the
top feed board M, is carried forward by grippers in the ordinary manner, and
before it begins to receive an impression, the other raised path G¹ comes in contact
with the before mentioned pulley H, thus gradually putting pressure on the brake
strap to take away any back lash, the strap releasing its grip on the pulley
immediately the impression commences, and remains clear until the table is
completing its travel in that direction, when the raised path G applies pressure to
the brake pulley in the manner before described.
Having now particularly described. and ascertained the nature of this Inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is:-
In a printing machine having flanges B on the side frames A combined with
recesses in the intermediate frame C, the brackets C¹ cast to and forming part of
the frame C for the purposes described. .
The formation of the brackets C₁ with the intermediate frame for the purpose
described.
In a printing machine provided with a brake pulley having raised paths G
and G on the circumference combined with the pulley H, lever J and brake
strap K substantially in the manner and for the purpose described.
Dated this 15th day of November 1886.
JOHN WAUGH,
Agent..