Improved Apparatus for Coating Paper and the like with Photo- graphic Emulsion or other Aqueous Medium.
Year: 1898

page_text: Date of Application, 8th June, 1898
Complete Specification Left, 8th Mar, 1899-Accepted, 6th May, 1899
Improved Apparatus for Coating Paper and the like with Photo-
graphic Emulsion or other Aqueous Medium.
I, ALRFD TILMANY, of 24A, Leibnitz-Strasse, Charlottenburg, near Berlin,
Germany, Chemist, do hereby declare the nature of this invention to be as
follows.
This invention relates to an improved apparatus for coating paper and the like
with photographic emulsion or other aqueous medium, its object being to con-
struct a machine in which not only rolls of paper of limited extend may easily and
effectively be coated, but also sheets of paper on the like of any length whatever
In carrying out my invention, I atrange on each side of the worktable or plate
and endless band of half an inch width, studded with prickers and travelling
over pulleys in such a manner, that these bands are enabled to take the paper to be
coated at its edges, causing it to run between them and a roller provided with
soft india rubbei ung
One pair of the mentioned pulleys is arranged adjustable in the longitudinal
direction of the working table. This latter, upon which the paper is fed, has a
tiansverse slot underneath the container of the aqueous medium thus allowing
the latter to dip into the trough anranged underneath, and preventing any waste
of emulsion Along both sides of the working-table or plate, there are sliding
grooves, by means of which the bands are brought to the level of the table:
The sheets of paper being thus conducted in a rational way over the table, any
bending down is entirely prevented
Behind the endless bands a plate is made use of for stripping off the coated
paper or the like
The improved apparatus may be worked by hand or by machinei
Improved Apparatus for Coating Paper and the like with Photo-
graphic Emulsion or other Aqueous Medium.
I, ALFRED THILMANY, of 241, Leibnitzstrasse, Charlottenburg, near Berlin, in
the Empire of Germany, Chemist, 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 relates to an improved apparatus for coating paper and the like
with photographie emulsion or other suitable liquid substances, and has for its
object to enable the operator to coat sheets of any dimensions without waste of
emulsion, which was hitherto possible, only with rolls of paper measuring several
yards in length.

page_text: I attain this object by employing two nation endless bands provided with smail
pins on the like, by which bands sheets of any desued size, short or long, may le
taken and carried underneath the coating reservoir
In the accompanying diawings the improved apparatus is represented in
Fig 1, by a side view, in
Fig 2, by a top view, and in
Fig 3, by a fiont view
Refening to these figures, two endless bands g of about half an inch m width,
and provided with small pins are arranged so as to run over two pairs of pulleyse
and ff, the latter pan being adjustable m the longitudinal direction of the table.
Thus various bands of different length may be employed, running over the pulleys
according to requiement, and at the same time the bands are easily kept taut
The paper to be coated with emulsion is laid upon plate h and conveved up
to the pulleys e e, at the top of which corresponding rollers provided at their
circumference with soft india rubber rings, press upon the passing bands g in order
to reduce thou ate of motion
Plate extending in its longitudinal duection up to the pulleys faitnough
not shewn for the sake of clearness in the drawings provided, duectly under-
neath the mouth of the coating reservon p with a transverse slot through which
the waste emulsion drains away into the trough or duct which extends across
the whole width of the paper to be coated Conresponding to the space required
for the fire motion of the bands the plate is provided at its sides with longi-
tudinal grooves in which the said bands are to run over then respective pulleys
The disadvantageous downward bending of the paper sheets is completely
avoided in this improved apparatus, since the paper does not leave its support
(plate), and is raised and guided by pins at the two longitudinal sides of the
table, when the coating substance is poured on it
Behind the pulleys ff the paper sheet being now coated with emulsion 1s
removed from the pins by a taking off plater and may be stored in the ordinai
mannel.
This apparatus is set in motion either by hand as shewn in the drawings (Fig 2)
by means of a clunk levers mounted on one of the shafts of the said pulleys, or
it may be actuated by mechanism and motive power
Having now particularly descubed and ascertamed the nature of my said
mvention, and in what manner the same is to be performed, I declare that what
I claim is
-
1 An improved apparatus for coating paper and the like with photographic
emulsion or other suitable liquid substances, in which apparatus the paper sheet
o the like is taken at each longitudinal side of the table by a narrow endless
band provided with small pins-running ore pulleys for conveying the sheet
underneath the mouth of the reservou containing the coating material, sub-
stantially as set forth and illustrated in the accompanying drawings
2 In apparatus for coating paper and the like with photogni alipie emulsion or
other suitable liquid substances, the arrangement of endless bands descubed in the
first claim for the purpose set forth
3 In the improved apparatus for coating paper and the like with photograph
emulsion or other suitable liquid substances of the fist claim, the arrangement of
pressing rollers at the top of one pan of the pulleys in order to reduce the rate
of motion of the endless bands, substantially as set forth and illustrated in the
accompanying diawings
.
1000