Portable Copying-press with Adjustable Pressure Mechanism.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Portable Copying-press with Adjustable Pressure Mechanism.
I, WILHELM VON DER NAHMER, residing at Remscheid, near Solingen, in the
Province of the Rhine, German Empire, Manufacturer, do hereby declare the
nature of this invention to be as follows; -
This invention relates to improvements in portable copying presses and has
for its object to produce a portable copying press which shall be conveniently
and quickly adjustable for varying thicknesses of books, documents, and the like,
for which the same is intended.
I am aware that portable copying presses, which consist of two flat boards or
plates of wood or the like, connected together on the one side by hinges, and on
the other side by an eccentric lever or the like (by means of which the necessary
pressure for copying is exerted) are known.
In order, however, to employ satisfactorily such presses for books or the like
of varying thicknesses it is necessary that the pressure hoop or shackle, or the
mechanism by means of which the pressure requisite for the copying is imparted,
it is necessary that such mechanism shall be adjustable to the aforesaid thickness
of the books, manuscripts and the like placed within the press in such manner,
that the press can be quickly and conveniently adjusted to exert a greater or
less pressure as may be desired.
This result I have accomplished by means of my improved portable copying press,
which I have illustrated in the accompanying drawing, in which similar letters
denote similar parts throughout the different figures.
It is necessary to state that I have shown only one form of construction of my
improved press, but it will be apparent that I can vary the construction or
mechanism without departing from the principle of my invention.
In the said drawing;
Figure 1 shows my improved press in side-view,
Figure 2 is a plan,
Figure 3 a front view, whilst
Figure 4 shows the adjustable pressure shackle or hoop with pressure lever in.
an open position.
Referring to these figures (a a) are the two pressure plates which, as shown in
Figures 1 and 2 are movably connected together at the rear side by hinges (b),
the said hinges being directly connected to and forming a continuation of the
stiffening rails (c,) said stiffening rails being screwed to the aforesaid boards or
plates a, between which the matter to be copied is placed.
At the front side, i.e. at the side opposite to the hinges, a lever (d) is arranged
provided with an eccentric (e,) said eccentric entering, (when closing the press).
a suitably formed part (f) upon the top pressure-board or plate, said eccentric (c)
sliding over and upon the part (f) in known manner for the purpose of exerting
the necessary pressure upon the plates as required for copying purposes.
In order, however, to quickly and conveniently alter or adjust this pressure

page_text: (and herein lies the characteristic feature of my invention), the eccentric (e) is
provided with, or pinioned upon, a short rod (9), said rod being provided with a
screw-thread (2), by means of which, the said rod can be screwed further into
the said shackle or hoop (i) when it is desired to exert a greater pressure, or
screwed out of the shackle to exert a less pressure, as may be required.
It will be apparent from the opened position of the shackle or hoop, as shown
in Figure 4, that the pressure can be regulated and adjusted by the mechanism
described, to a very considerable extent.
Doted thin 17th
T
1000
Portable Copying-press with Adjustable Pressure Mechanism.
4
.1
I, WILHELM VON DER NAHMER, residing at Remscheid, near Solingen, in the
Province of the Rhine, German Empire, 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:-
-
This invention relates to improvements in portable copying presses and has
for its object to produce a portable copying press which shall be conveniently
and quickly adjustable for varying thicknesses of books documents, and the like,
for which the same is intended.
I am aware that portable copying presses, which consist of two flat boards or
plates of wood or the like, connected together on the one side by hinges, and on
the other side by an eccentric lever or the like (by means of which the necessary
pressure for copying is exerted) are known.
In order, however, to employ satisfactorily, such presses for books or the like
of varying thicknesses it is necessary that the pressure hoop or shackle, or the
mechanism by means of which the pressure requisite for the copying is imparted,
it is necessary that such mechanism shall be adjustable to the aforesaid thickness
of the books, manuscripts and the like placed within the press in such manner,
that the press can be quickly and conveniently adjusted to exert a greater or
less pressure as may be desired.
This result I have accomplished by means of my improved portable copying press,
which I have illustrated in the drawings filed with the Provisional Specification,
in which similar letters denote similar parts throughout the different figures.
It is necessary to state that I have shown only one form of construction of my
- improved press, but it will be apparent that I can vary the construction or
mechanism without departing from the principle of my invention.
In the said drawing:
Figure 1 shows my improved press in side-view,
Figure 2 is a plan,
Figure 3 a front view, whilst
Figure 4 shows the adjustable pressure shackle or hoop with pressure lever in
an open position.
Referring to these figures (a a) are the two pressure plates which, as shown in
Figures and 2, are movably connected together at their rear side by hinges (b),
the said hinges being directly connected to and forming a continuation of the
stiffening rails (c,) said stiffening rails being screwed to the aforesaid boards or
plates a, between which the matter to be copied is placed.

page_text: At the front side, i.e. at the side opposite to the hinges, a lever d is arranged
provided with an eccentric e, said eccentric entering, (when closing the press),
a suitably formed part f upon the top pressure-board or plate, said eccentric (e)
sliding over and upon the part (f) in known manner for the purpose of exerting
the necessary pressure upon the plates as required for copying purposes.
In order, however, to quickly and conveniently alter or adjust this pressure
(and herein lies the characteristic feature of my invention), the eccentric (e) is
provided with, or pinioned upon, a short rod (9), said rod being provided with a
screw-thread by means of which, the said rod can be screwed further into
the said shackle or hoop (2) when it is desired to exert a greater pressure, or
screwed out of the shackle, to exert a less pressure, as may be required.
It will be apparent from the opened position of the shackle or hoop, as shown
in Figure 4, that the pressure can be regulated and adjusted by the mechanism
described, to a very considerable extent.
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:
-
A portable copying press, characterised by a pressing-lever (d) and an eccen-
tric (e) being connected by a screwed rod (9) to a shackle or the like (2) hinged
to the rod (g), the said screwed rod (g) being adjustable within the shackle (2),
whereby a rapid and simple alteration or adjustment of the press plates can be
effected, for the purpose of inserting books or the like of varying thickness
between the press plates (a) and furthermore for the purpose of "optionally
regulating" the pressure between the said press plates, substantially as described.
Dated this 29th day of September. 1898.
GEO. H. RAYNER,
Agent for the Applicant.