A Locking Device for Copying Presses.
Year: 1891

page_text: Date of Application, 21st Apr., 1891
Complete Specification Left, 13th May, 1891-Accepted, 13th June, 1891
WELLI
&TREE
LEL
PROVISIONAL SPECIFICATION.
A Locking Device for Copying Presses.
STER
I, MAX SCHEID of Wadgassen a.d. Saar, Kingdom of Prussia and German
Empire, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a locking device for copying presses having for object
to prevent inspection of the copying book by unauthorised persons without
necessitating the removal of the copying book out of the press and the placing of
the same under lock and key.
In the accompanying drawings Fig. 1 is a vertical section shewing the locking
device in combination with the screw spindle and a portion of the press, in the
open position;
Figs. 2 and 3 are respectively a horizontal section and a side elevation of the
locking device in the closed position.
The spindle A. is provided with four parallel longitudinal grooves a arranged
at equal distances around the same, which grooves are triangular in cross section.
The bevelled forward end of a catch 6 which is arranged in a recess c of the
bridge-piece B of the copying press, engages in one or other of these grooves a
when the locking device is in its closed position as in Fig. 3. The rear portion of
this catch is connected with a bent leaf spring d which is of bulging form at
its rear end and which is surrounded by a spiral spring e; the lower portion of
the catch 6 is formed with a recess f (Fig. 1) in which engages the bit of a key g
(Fig. 2.) when the latter is inserted through a recess of the bridge piece B.
When the copying book has been used and it is desired to prevent inspection of
the same, the locking device is with the aid of the key g brought out of the
position shown in Fig. 1 into the position shown in Fig. 3, whereby the bevelled
end of the catch is brought into one of the triangular grooves a of the
spindle A.
In consequence of the shape of the grooves a and of the front portion of the
catch 6 the spindle A can now be rotated in a downward direction upon the copying
book, but not back again in an upward direction, so that, as soon as the copying
book is pressed tight by the spindle A it is impossible to remove the book. The
locking device can by means of the key be brought into or placed out of
operation when desired. In the latter case the locking device remains in combina-
tion with the bridge piece B of the press.
A-11001
MAX SCHEID,
By L. W., per J. G. S.
COMPLETE SPECIFICATION.
A. Looking Device for Copying Presses.
1, MAX SCHEID, of Wadgassen a.d. Saar, Kingdom of Prussia and German
0 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 a locking device for copying presses, having for object
to prevent inspection of the copying book by unauthorized persons, without
5 necessitating the removal of the copying book out of the press and the placing of
the same under lock and key.

page_text: Referring to the drawings left with my Provisional Specification,
Fig. 1 is a vertical section shewing the locking device in combination with the
screw spindle and a portion of the press the parts being shown in the open
position.
Figs. 2 and 3 are respectively a horizontal section, and a side elevation of the
locking device in the closed position.
The spindle A is provided with four parallel longitudinal grooves a arranged at
equal distances around the same, and each of triangular form in cross section.
The bevelled forward end of a catch which is arranged in a recess c of the
bridge piece B of the copying press, engages in one or other of these grooves a
when the locking device is in its closed position as in Fig. 3. The rear portion of
this catch is connected with a bent leaf spring d which is of bulging form at
its rear end, and which is surrounded by a spiral spring e. The lower portion of
the catch bis formed with a recess f(Fig. 1) in which engages the bit of a key g
(Fig. 2) when the latter is inserted through a recess in the bridge piece B.
When the copying book has been used and it is desired to prevent inspection of
the same, the locking device is, with the aid of the key g brought out of the
position shown in Fig. 1 into the position shown in Fig. 3, whereby the bevelled
end of the catch is brought into one of the triangular grooves a of the spindle A.
In consequence of the shape of the grooves a and of the front portion of the
catch the spindle A can now be rotated in a downward direction upon the
copying book, but not back again in an upward direction, so that, as soon as
the copying book is pressed tight by the spindle A it is impossible to remove
the book. The locking device can by means of the key be brought into or
placed out of operation when desired. In the latter case the locking device remains
in combination with the bridge piece B of the press.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is :---
A locking device for a copying press, comprising a catch 6 bevelled at its
front end and connected at its rear end with a bent leaf spring 9 which is
surrounded by a spiral spring e, the lower portion of the catch being formed with
a recess to receive the bit of a key and the front end of the said catch being
arranged to enter one or other of a set of longitudinal grooves a in the copying
press spindle substantially as hereinbefore described.
Dated this 13th day of May 1891.
MAX
SCHEID.
By L. W., per F. B.