IMPROVEMENTS IN BOOK-BINDERS' ARMING OR BLOCKING PRESSES
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by Arthur Wilfred Brewtnall at the
Office of the Commissioners of Patents on the 29th June 1880.
ARTHUR WILFRED BREWTNALL, of Warrington, in the County of Lancaster.
"IMPROVEMENTS IN BOOK-BINDERS' ARMING OR BLOCKING PRESSES."
This Invention relates of improvements in the ordinary book binders' hand press
for blocking, whereby it is made equally suitable for blocking in black as well as
golden book covers. In accordance with this Invention the top plate on which the
cover is laid to take the impression is made to slide forward on rods which also act
ns guides. It also has sides attached to it which keep it in line with the under
plate. These sides are prolonged at the back and form bearings for inking rollers.
When the cover is laid in position on the plate and the plate pushed in (by means
of a handle attached to the front) to take the impression, the rollers attached
thereto protrude at the back and impinge on an iron ink-distributing cylinder or
drum, which is caused to revolve as the hand lever is brought down to give the
impression by being connected by means of levers and a rack and pinion or other
suitable mechanism to such hand lever. When the lever is raised the cylinder
revolves in the opposite direction. A side motion is also imparted to the cylinder
as it revolves by means of a worm on its shaft or its equivalent. The inking
rollers being less than half the diameter of the distributing cylinder revolve at
least five times on its surface, thus giving very good distribution. A rider roller
can also be added to the cylinder to further increase the distribution. A small ink
table with hand roller is attached to the machine for feeding the ink, or a duct and
vibrator as used in printing machines can be added. A wooden bearer is attached
to the platten at each side by means of thumb screws. These bearers are for the
rollers to run along, and can be adjusted in such a way as to cause the roller to
pass smoothly over the forme and ink it evenly. When the plate is drawn forward
for the purpose of laying on a fresh case, the inking rollers pass under the forme
and are kept in contact with it by means of springs, and on the return of the plate
a second rolling is given to the forme. It will thus be seen that for each impression
the inking rollers revolve several times on the distributing surface, and then pass
twice over the forme without any extra labour on the part of the workman. To
the sliding plate is attached a catch or catches which hold it perfectly tight when
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page_text: taking the impression, and thus give perfect register. The catch or catches are so
made that when the handle of the sliding plate is taken hold of to pull it forward,
they are lifted and release the plate. When gold blocking is to be done with the
press to which this addition is made, it is only necessary to uncouple one of the
connecting rods of the distributing apparatus, and remove the wooden bearers
which are attached to the platform by means of thumb screws. These improve-
ments can be applied to any machines now in use and are exceedingly simple and
effectual.