IMPROVEMENTS IN APPARATUS FOR DRYING STRAWBOARD, CARDBOARD AND THE LIKE
Year: 1886

page_text: Date of Application, 31st Dec., 1886.
Specification Accepted, 15th Apr., 1887.
and the like.
I NEWNHAM BROWNE of 73 Cheapside in the City of London, Fel. Inst. P.A. do
hereby declare the nature of the said invention for IMPROVEMENTS IN APPARATUS
FOR DRYING STRAWBOARD, CARDBOARD AND THE LIKE, 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 provide means for drying sheets of strawboard or
cardboard and the like readily with a small expenditure of heat, time and space.
The apparatus embodying this invention is represented in the accompanying
drawings in which Fig. 1 is a vertical section of the said apparatus arranged with a
horizonal drum.
Fig. 2 is a vertical section on a plane perpendicular to that of Fig. 1.
Fig. 3 is a plan illustrating a slightly modified arrangement.
Fig. 4 is a vertical section shewing the apparatus with a vertical drum.
Fig. 5 is a horizontal section of the same.
In that form of the apparatus which is shewn in Figs. 1 & 3 there is a horizontal
shaft a; the perforated hubs or naves connect therewith discs or plates c and by
these together with the arms d and hoops e e¹ a cylindrical frame or cage is formed
which surrounds the shaft a and is concentric therewith the arms may be placed
tangentially to the shaft as shown in Fig. 1 or radially thereto as shown in Fig. 3.
The cage or framing carries perforated plates for partitions made of sheet metal,
trellis work, wire gauze or the like and the said plates or partitions support the
sheets of Strawboard or other material to be dried. The whole thus forms a rotary
fan whereof the sheets to be dried are the wings.
The said fan is entirely enclosed by a casing ginto which two inlets h lead
concentrically with the shaft a and serve to admit the air, these inlets may connect the
drying apparatus with suitable heating devices, or the heating devices may be applied
directly to the inlet.

page_text: From the periphery of the casing the outlet i rises as shown in the drawings.
Figs. 4&show another form of this apparatus. In this form the cylindrical case
or framing formed by the hubs or naves bb the rods c suitable stays and the hoops e e,
is carried by an upright spindle or shaft a.
The plates, sheets, wiregauzes or partitions which serve for the reception of the
sheets of strawboard or other material, are so arranged that, when the sheets to be
dried are introduced, the whole assumes the form of a fan with helically placed wings.
In this form the casing g encloses the heating device also. The latter may consist
in a coiled pipe k. Air is admitted through the apertures in the bottom and passes
out by the outlet i in the top of the apparatus.
...
In either form of the apparatus the insertion and withdrawal of the sheets to be
The sheets
dried takes place through a suitable aperture closed by a door or cover.
may be held in place by rabbets and springs or otherwise.
The action of this apparatus is as follows; after the sheets or articles to be dried
are inserted and the door or cover securely closed the drum or fan is rotated. The
sheets then work like the wings of a rotary fan and attract air at the inlet apertures
and expel it by the outlet i. In this manner the currents of air passing through the
apparatus are brought into contact with the sheets. As moreover the quantity of air
passing through the apparatus increases with the velocity with which the fan is caused
to revolve, the drying of the sheets will also be effected the more rapidly the more
quickly the fan is turned.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed, as communicated to me by my
foreign correspondents, I declare that what I claim is
1) An apparatus for drying sheets of Strawboard, cardboard and the like wherin
the sheets or articles to be dried are so arranged that they act like the wings of a
rotary fan and thus, propelling the air which acts upon the same, come into intimate
contact with the air.
2) An horizontal apparatus for drying sheets of strawboard, cardboad, and the like
consisting of a revolving cage for the reception of the sheets (which form wings
therein) and a casing having suitable inlets and outlets and with or without a heating
device, substantially as shewn in figs. 1 & 2.
3) A vertical apparatus for drying sheets of strawboard or the like consisting of a
vertical revolving cage enclosed in a suitable casing, fitted with the heating apparatus A
if desired, substantially as shewn in Figs. 4 & 5 of the drawings.
Dated the 21st day of December 1886