IMPROVEMENTS IN THE MANUFACTURE OF BOXES AND OTHER HOLLOW ARTICLES FROM PAPER PULP, AND IN APPARATUS THEREFOR
Year: 1876

page_text: LETTERS PATENT to William Frederick Tindell, of Essex Street, Strand, in
the County of Middlesex, Gentleman, for the Invention of "IMPROVEMENTS IN
THE MANUFACTURE OF BOXES AND OTHER HOLLOW ARTICLES FROM PAPER
PULP, AND IN APPARATUS THEREFOR." A communication from abroad by Seth
Wheeler and Edgar Jerome, both of Albany, in the State of New York, United
States of America.
Sealed the 2nd February 1877, and dated the 5th August 1876.
PROVISIONAL SPECIFICATION left by the said William Frederick Tindell at
the Office of the Commissioners of Patents on the 5th August 1876.
WILLIAM FREDERICK TINDELL, of Essex Street, Strand, in the County of
Middlesex, Gentleman. "IMPROVEMENTS IN THE MANUFACTURE OF BOXES AND
A
OTHER HOLLOW ARTICLES FROM PAPER PULP, AND IN APPARATUS THEREFOR."
communication from abroad by Seth Wheeler and Edgar Jerome, both of Albany,
in the State of New York, United States of America.
This Invention has reference to improvements Patented on the 7th of May 1873,
No. 1649.
The apparatus in which the articles are dried is according to this Invention con-
structed as follows:-Instead of the perforated shelves in the paternoster gear racks
are used with series of pegs standing upright, and each formed with a disc on the
end; the boxes rest freely thereon, and thus the moisture will drain off more perfectly,
their bottom edge being free. The smoke pipe from the stove is led up along outside
the drying apparatus, and is by two pipes passing off sideways connected respectively
to the lower part and to the upper part of a middle chamber in the apparatus, and
by regulation of a valve in this lower connecting pipe and a valve in the main
smoke pipe between the two connecting pipes the hot smoke may be made to pass
entirely through the latter into and up through the middle chamber, and out
through the top connecting pipe, and then to a chimney, or it may be led partly to
the chimney at once, and partly through the middle chamber, or it may pass off

page_text: wholly to the chimney. The heat is thus undor perfect control. The other part of
the drying apparatus is preferably heated by steam pipes or chambers..
The articles having been dried in the aforesaid apparatus they are next coloured
in a machine of the following description:-This machine has a table revolving
intermittently by frictional adhesion to revolving gear on the lower part of its
upright spindle, when a holding pawl or hook is periodically released by gear
operated from the driving shaft by crank and connecting rod, or by other well
known automatic mechanical device. The boxes or covers to be coloured rest on
two or more, say, three upright spindles, which are revolved by gearing from the
aforesaid revolving gear on the lower part of the table spindle. The attendant puts
a box or cover on the upright spindle nearest to him, the table moves a third of a
turn, bringing the said box or cover against a revolving colour brush, which
receives its colour from a revolving drum formed with screw thread on its surface,
and on to which the colour drips or trickles down the screw threads from a pipe or
other conductor coming from a colour pan above. The said box or cover having
thus been coloured on its circumference the next third part turn of the table brings
it against another revolving brush, which receives its colour from a disc or drum
revolving or oscillating in a colour trough; the box or cover is thus coloured on
the end surface also, and is then ready to pass to the pressing or embossing
machine.
The pressing or embossing machine is constructed as follows:-It has a revolving
head formed with, say, two or three bosses, on which the boxes or covers fit. Å
descending presser plate or plunger is by knuckle joint action or other intermittent
action brought against the boss, having a box or cover on, thus compressing, and if
desired, also embossing the bottom thereof; simultaneously with this action a
mould consisting of sections, the number being regulated according to the shape of
the box to be pressed, is by knuckle joint or other mechanical motion made to act
upon the circumference of the box or cover, thereby compressing, and if desired also
embossing it. The presser plate or plunger and the mould may be heated by steam.
While one box or cover is thus being pressed the attendant changes an already
pressed box for an unpressed one.
In the carrying out of this Invention it is preferred, as above described, to color
the boxes before subjecting them to pressure in the embossing machine, as it is
found that their finish is thereby improved as compared with the heretofore
practised mode of manufacture, according to which the coloring process came after
the pressing or embossing.
The next improvement refers to a machine for smoothing the edge or flange of
box or cover. This machine consists mainly of a spindle fitted at one or both ends
with Ransome's Patent emery or other grinding stone or wheel, formed on one face
with a slight groove of the size of the diameter of the box.