Improvements in Manuscript-copying Apparatus.
Year: 1891

page_text: ate of Application. 6th Apr., 1891-Accepted, 30th May, 1891
COMPLETE SPECIFICATION.
Improvements in Manuscript-copying Apparatus.
ACOTE
I, AISIK SCHAPIRO, of 49, Kloster Strasse, Berlin, C., Germany, Manufacturer,
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 :-
My invention relates to apparatus for copying manuscripts, of which all parts are
brought together into one box. Inside of this box, there are two horizontal rolls
or drums arranged parallel to each other, one at each end, between which rolls the
copying block or table is placed in such a height, that the copying paper being
stretched across the block and running from off one roll on to the other, always
bears against the block with a slight tension.
The object of my invention now is to provide the rolls with bearings which
elastically hold the journals and permit an easy removing and replacing of the rolls,
and I arrive at these ends by the nicans illustrated on the accompanying drawing,
in which similar letters denote similar parts throughout the several views, and in
which:-
Fig. 1 is a perspective view of the complete apparatus.
Fig. 2 is a front-view of a roll in two different positions.
Fig. 3 is a plan of the front bearing of the same.
Fig. 4 that of the hinder bearing of the same.
The
Each of the two rolls A. A is placed on one side of the body of the box.
block or table T, being attached to the box between the two rolls, is rounded off on
both sides in order to avoid the copying paper, sliding over the block, or being
injured by scraping against sharp edges. Close to the front bearings each roll is
provided with a small ratchet wheel and spring pawl s, which latter may be
thrown out of gear by moving to one side.. Both pawls face each other, thereby
each preventing the turning of the rolls in opposite direction. The main features
are to place the rolls in such a manner, that they may be easily removed and when
brought to revolve, rotate evenly and proportionately, and although the manipula-
tion is an easy one, the rolls stretch the paper across the board under a certain
tension, that keeps it straight and smooth. The front-pivot is journaled in the
correspondingly shaped spring-blade F, one end of which is attached to the rim of
the box by screws and the other end rests in a notch cut out of the same rim,
wherein it can freely slide. The inside diameter w of the spring-blade F is in its
released state somewhat smaller than the diameter d of the pivot d'. Thus the
spring imparts a pressure on to the pivot, when inserted, and one has to overcome
a certain amount of friction, when setting the rolls to revolve.
The rolls are
turned by the knob or small hand-wheel & projecting out on the front of the box.
The hinder bearing consists merely of a dead-centre-point a, on which the roller is
stuck by a corresponding centre-hole b. The roll now is introduced by firstly
holding the hinder end against the centre-point and the front pivot dis pushed
down into the jaw of the spring-blade, which by the pressure opens out and
allows the pivot to slip into its journal. The removing of the roll is as easy and
even more handy. The roll A. need only be lifted up in front to disengage it out
of the spring-blade, and then already is released, since it will slip off from the
centre-point by itself.
In employing the apparatus for multiplying writings the copying-paper is wound
up on one of the rolls and the end of the same is brought over the block on to the
other roll. This part laying over the block is used for printing in the ordinary
manner and when finished printing may be rolled up on the empty roller, whereby
new and clean paper is brought on the block and a new manuscript may be copied.
1P 1

page_text: If the paper be wound from the left roll to the right, the left pawl is released from
the ratchet and may be put in gear again, when enough paper is moved on.
Thus
an unintentional moving forward or backward of the paper is obviated, and by the
friction imparted to the rolls by their front bearings the same is always kept
straight and even over the block.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
-
1. In an apparatus for copying manuscripts: The rolls (A A) being in front
journaled in spring-blades (F), holding the same elastically clasped and resting
with their hinder ends against centre-points (a), as for the purpose set forth.
2. In an apparatus for copying manuscripts: The rolls (A A) being journaled in
front in spring-blades (F) resting with their hinder ends against centre-points (a),
and carrying ratchet-wheels () in combination with spring pawls (s) as for th
purpose set forth.
Dated, Berlin. this 6th day of April 1891
AISIK SCHAPIRO..
By Rayner & Cassell,
37, Chancery Lane, London, W.C., Agents for the Applicant.