Improvements in Appliances for Moulding and Shaping Pasteboard.
Year: 1893

page_text: COMPLETE SPECIFICATION.
Improvements in Appliances for Moulding and Shaping Pasteboard.
I, JOHN BRIERLEY HOWARD, of Penny Bank Chambers, Halifax, in the
County of York, Patent Agent, do hereby declare the nature of this invention,
which has been communicated to me by Emil Fischer, of Rawitsch, Posen, in
the Empire of Germany, Mason and Carpenter, 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:-
It is well known that pasteboard is already used for covering and lining parts of
buildings, but heretofore it has only been used in straight sheets as an insulating
layer. The importance of pasteboard for building above ground and for other
purposes is however considerably increased by using it in the manner herein
described, that is, in specially shaped sheets, the cross section of which may be
rectangular, corrugated, undulated, or of other form. A dovetail like section is of
particular importance and value, as in this case the pasteboard has not only an
insulating effect, but it also gains a certain bearing strength, and above all it allows
free access of air to the lined parts, except in the case where the folds, serving as
air channels, are filled with a solid substance.
Such being the nature and object of my said invention, the following is a complete
description of same, reference being had to the accompanying drawings.
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Figs. 1 and 2 of the drawings shew the shape in section of the pasteboard. It
also shews how the dovetail channels "a" of the pasteboard "6" may be filled by
wooden strips
C which fit exactly into the channels "a," and are held securely
therein, so that even by violent pushing or pulling, the strips cannot be taken out
after the pasteboard has been saturated with tar. Such sheets of pasteboard may
be used as bearing parts or floors of a building without a boarding, and for walls of
tents, barracks, and for many other purposes.
It is of importance that the pasteboard is shaped in such a way that it will resist
pressure, and not straighten out. This can only be obtained by pressing and
shaping straight sheets, the pressing arrangement to be constructed so that the
pasteboard introduced into the press does not get damaged, and that the pressed
pasteboard can be taken out of the press without the slightest injury to the acquired
shape. Such a pressing arrangement is illustrated by Figs. 3 to 9 inclusive.
The stamps or dies of the press illustrated therein are arranged for producing the
dovetail like cross section. If a different form is wanted, the acting surfaces of the
dies must be shaped to correspond to the cross section of the required form of
the pasteboard. In all instances however, the press is arranged as hereinafter
described.
*
Two strong round bars "d.d." supported by the frame sides "e" bear the oblong
cast iron parts "f" which are hollow inside. These parts have on their surface,
heads "," which are broader at the top than at the base. The blocks "" are
connected on either side by means of links "g. g," the bolts "g" of which are fixed
in the ends of the blocks "f." The bolts pass through slots of the links, so that
the distance apart of the blocks "f" may be varied. The object and the manner
of operation of apparatus is explained hereafter.
At the top of each block "" is a frame "h" fastened at the back end of "f"
by a hinged joint "h¹." The latter is carried in a slot """" (Fig. 5) and moves
round a pin which is fixed in the said slot. The frame."" has at each end,
heads "A" and "³,
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one of which "*" is provided at its front with a bolt "i"
moveable in a slot hole, and at its back with two arms "k," swinging round pins or
studs. Each of the heads "" is provided with two swinging arms "," and
the arms of the adjoining heads are also connected, so that they can move.

page_text: The four connecting bolts of each of the arms "k.k" of the two adjoining
frames are fixed to the ends of a solid die "n," so that each of the two frames "/"
bear one die " n.
"
Figs. 6 and 7 shew three front frame heads "³," and
Figs. 8 and 9 three back frame heads "," with all the parts adjoining and
connected therewith.
Along the inner face of the frame heads "3" runs a shaft "m" with eccentric
ends "m," resting on small bearings "1.1." The shaft". m "is provided with a
crank "m" (Fig. 3) to be turned by hand. When the shaft "m" is turned, it
presses back the frame heads "," so that the frames turning round the stud or pin
at "," are lifted away from the bodies "ff" below them, and are brought into
an inclined position, as shewn by the dotted lines in Fig. 4.
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This enables a piece of the roll of pasteboard "" to be put upon the heads "f1"
of the blocks "f." The roll of pasteboard is carried on a shaft "p," and is as wide
as the dies " n
are long. At this operation the bodies "f" must be so far apart
from each other, that the distance between two adjoining upper edges of the
heads "f" is equal to the sum of the widths of the three outer surfaces, which
have to form the dovetail shaped pasteboard (Figs. 6 and 7). After having put
the pasteboard upon the cast iron blocks "f" and their heads, the frames "" are
let down again, and secured by means of the bolts "," which can be pushed into
the holes "f" of the blocks "f," and thus prevent the raising of the frames, and
the circular motion of the frame heads. By means of the frames, the pasteboard is
held down firmly upon the blocks "f" during the pressing process.
Through all the bolts "i" a rail "q" is passed, which can be lifted or lowered
by means of the chains " 9" in order to pull out, or push in all the bolts
simultaneously. The bolts "i" and the heads "h" can slide together along the
rail "q." When the pasteboard is fixed between the heads "f" and the
frames "," the driving toothed wheel " 2" "is set in motion, driving in its turn
the two toothed wheels "1 1" fixed to the frame side of the machine. By means
of the wheels "," two screwed rods "s. s." fitting into the wheels, are moved
(Fig. 5), the ends of these screwed rods are fixed in footsteps "s' s¹," on the side of
one of the bodies "f." One of the screwed rods has a left handed, the other a
right handed thread, so that they are moved by the wheels in the same direction.
When the screwed rods are moved against the blocks "f," the first of these, guided
by the bar "d," moves parallel towards the next one, and the frame ""fixed upon
it, follows, and by means of the arms "k. k¹" a simultaneous vertical and horizontal
motion of the die "n "
between the first and second block "f" takes place. This
die "n" with the co-operation of the heads "f1" acting also as dies, and of the
frames "," produces the required shape across the pasteboard. Then the second
block"" with its frame, begins to move towards the third block "f. f," and its
frame "h," and the second die "n" operates in the same way as just described; a
second impression on the pasteboard is thus formed by the lower die "f" and a
third on the second- die ""n." In this manner the whole sheet of pasteboard
between the dies gets shaped through continuous turning of the wheel "".""
k
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During the shaping process, steam is let into the hollow blocks "f" from a
pipe "through a branch pipe "," in order to steam the pasteboard; by this
means a better and easier shaping is obtained than if the pasteboard was pressed
when cold and hard. The condensed steam in the blocks "f" may be carried off
through branch pipes "u" into a main collecting pipe
"6 U." The branch
pipes "" and "" must be slightly flexible, that is, made of lead, copper, or
india rubber, so that they can follow the movements of the blocks "f.f"."
In order to take the moulded or shaped pasteboard from between the dies without
opening it out again, it is arranged that the roller bar "p" can be moved. This
bar is carried in a somewhat long bearing "p1" fixed by screws to the frame
side "e," and projects at the other end of the machine so far as to allow of its being
drawn out in its bearings to the width of the pasteboard, without injuring the
shape it is thus possible to pull out at the front of the machine, together with the

page_text: roll of pasteboard, the moulded or shaped pasteboard from underneath the dies,
which are still in their closed position. When this is done, the moulded or shaped
pasteboard is pulled on to a table "v" at the side of the machine. By turning the
wheel "" in the opposite direction, the dies are put back into their original
position, the bolts are lifted out of the holes "f3" by means of the rail "q," the
frames "" are turned away from the blocks "f" by means of the eccentric
shaft "
m," and a new straight layer of pasteboard is then laid upon the
blocks "ff" by pushing back the table "v" and the roller "p."
The above described process is repeated until the whole roll of straight paste-
board is worked up and moulded, and the moulded pasteboard, as it is ready, may
be put in loose layers upon the table "v to dry or set.
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Having now particularly described and ascertained the nature and object of my
said invention, and in what manner the same is to be performed, I declare that
what I claim is :-
A machine for shaping pasteboard in such a way as to resist pressure and
maintain its shape, consisting of a number of lower dies "fi" which can be heated
and have a cross section corresponding to the desired shape of the pasteboard. An
equal number of upper dies "h" which can be laid on the lower dies, or turned
away from the same. A number of intermediate dies "n," supported by linked
arms "k. k" between the upper dies, the cross section of their bottom part corre-
sponding with the desired shape. These three groups of dies, through the horizontal
motion and simultaneous vertical motion of the intermediate dies "n" pressing
down upon the pasteboard, which has been laid on the lower dies, so producing the
required shape of pasteboard. The dies being retained in their closed position, the
shaped pasteboard can be taken out from between without injury to its shape, as
herein described, and substantially as illustrated by the annexed drawings.
Dated this 8th day of August 1893.
J. BRIERLEY HOWARD,
Applicant.