Improvements in Apparatus for Drying Paper Sheets and similar Articles.
Year: 1899

page_text: Date of Application, 27th Nov., 1899-Accepted, 13th Jan., 1900
COMPLETE SPECIFICATION.
Improvements in Apparatus for Drying Paper Sheets and similar
Articles.
A communication from RADEBEULER MASCHINENFABRIK AUGUST KOEBIG, of
Leipsiger-Strasse, Radebeul, near Dresden, Saxony.
I, JOHN CLAYTON MEWBURN, of the Firm of J. C. Mewburn & Ellis, of 55 and 56,
Chancery Lane, in the County of London, Chartered Patent Agents, 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:-
This invention refers to improvements in apparatus for drying paper sheets
and similar articles, in which apparatus the paper sheets are deposited on suitable
trays, said trays travelling through the apparatus thereby exposing the sheets
to heated air and returning with the dried sheets to the point of departure.
The improvements consist in so attaching the trays to the endless chains, which
carry the trays through the apparatus, that the trays maintain throughout this
travel a horizontal position, whether travelling through one stage of the apparatus
or exchanging from one stage to the other, or returning from the end of the last
stage to the beginning of the first stage.
And the improvements furthermore consist in providing the pivots, by which
the trays are connected to the endless chains, with rollers, which travel along
on suitable side-fillets in the apparatus, whereby the travelling of the chains with
the pendant trays is accomplished with the least possible friction, as the moving
parts travel on rolling supports.
The pendant arrangement of the trays will materially facilitate the removal
of the dried sheets and the deposit of the wet sheets at that part of the apparatus,
where the trays travel from the end of the last stage to the beginning of the
first stage in vertical direction, in which travelling direction they always main-
tain their horizontal position.
In carrying out the invention it is preferred to employ a U-shaped strap on
the horizontal part of which the tray properly speaking is fixed, while the upper
ends of the strap are provided with pivots, which enter into holes in the links
of the travelling chains; thus the trays are made pendant to maintain their
horizontal position.
And in order to make the improvements fully understood, I refer to the
accompanying drawings in which Figure 1 shows a side elevation of the drying
apparatus with the improvements.
Figure 2 is a plan of the apparatus, with the framing of the same in section.
Figure 3 shows in side view and Figure 4 in plan a detached view of a tray in
its parts of suspension, with part of the travelling endless chains.
The trays which are preferably made of wood are provided with a U-shaped
strap 6 in the horizontal part of which the tray rests.
kare the endless chains which travel through the apparatus in several stages

page_text: and which are guided by properly arranged guide rollers a¹ at the rear end of
the apparatus by similar rolls a within the apparatus and by similar rolls a at
the front end of the apparatus, where said chains make their vertical travel from
the end of the last stage to the beginning of the first stage.
The links of these chains kk are at their middle parts provided with horizontal
holes, into which the pivots m enter, which pivots are extending outwardly from
the upper ends of the vertical parts of the straps b. Thus the trays are suspended
to the chains and may, by such pendulous attachment, maintain their horizontal
position throughout their travel with the chains.
In order to make this travel as frictionless and as strainless as possible small
rollers are arranged on the pivots m, which rollers are preferably arranged
within the link of the chain as clearly seen by Figure 4.
Thus the chains together with the trays are provided with rolling supports.
The rollers run on horizontal side-fillets f, which are attached to the inside
of the uprights of the framing.
In order to secure undisturbed travel of the trays r, vertical and horizontal
guide bars s are provided, which in case of any disturbance in the working of
the apparatus will prevent the trays from being moved out of their horizontal
position or being pushed together.
By the above specified arrangement of suspending the trays I materially
increase the facilities for removal of the dried sheets from the trays and deposit-
ing wet sheets into the trays as will easily be understood at the front end of the
apparatus where the removal may take place at B and the deposit at C either
in succession or simultaneously.
I am aware that drying apparatus for paper sheets or for similar articles are
known in which the trays with sheets deposited on them are caused to travel in
several stages through the apparatus by means of endless chains.
Having now particularly described and ascertained the nature of the said
invention as communicated to me, and in what manner the same is to be per-
formed, I declare that what I claim is:-
1. In apparatus for drying paper sheets and similar articles, trays r provided
with pivots m above their point of gravity for suspending the trays in a a pendulous
manner into and between the endless chains kk which travel through the
apparatus.
2. In apparatus for drying paper sheets and similar articles, trays provided
with pivots m above their point of gravity, endless chains kk, rollers on said
pivots m and fillets f for carrying the endless chains and the trays by said
rollers.
3. The combination of parts substantially as herein before described and
represented in the accompanying drawings forming an improved apparatus for
drying paper sheets and similar articles.
Dated this 97th Ja
5
1
1000
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London, Chartered Patent Agents.