Improvement in Pocket-knives.
Year: 1889

page_text: COMPLETE SPECIFICATION.
Improvement in Pocket-knives.
I, MAX STEINBERG, Merchant, of 10, Jalinstrasse, Cologne, Germany, do hereby declare
the nature of my invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
that
This invention has for its object to construct a pocket knife, in such a manner,
it can be completely closed and the interior protected against dirt or dust, and that
the individual blades, as well as the casing, can be easily cleaned, while affording
greater security against accidental cutting.
In the following description reference will be made to the annexed drawing,
Figs. 1 to 6, which represent a knife embodying my invention.
Fig. 1, is a plan, and Fig. 2, an end view of the closed knife; Figs. 3, and 4, are
corresponding views of the knife with the casing opened; Fig. 5, is a section
along line of Fig. 3, and Fig. 6, shows the knife ready for use.
The casing consists of the parts a bd, the two external parts ab being connected
with the central part d, by hinge-joints c,-c'. In the part d the blades, cork-screw,
button-hook, and other instruments are fastened by means of pins, for which
purpose this part contains several partitions d' or intermediate plates d², d³ which
form one solid piece with d.
If the knife is to be carried in the pocket, that is to say, when it is out of use,
the two halves a and b of the casing are turned on their hinges e and c¹, so as to
assume the position shown by Figs. 1 and 2, in which the blades and other instru-
ments are completely covered by the casing a, h, and its rectangularly bent
continuations a¹ b¹.
For keeping the casing closed, I employ two buttons a², 62 in the well-known
manner, or any other suitable fastening.
For using the knife, the two halves of the casing are unfolded, into the position
shown by Figs. 3 and 4, the blade or other instrument to be used is turned up
(through an angle of 180°), and the two halves a and b are again placed into the
position shown by Figs. 1 and 3, after which the knife is ready for use (Fig. 6).
The closed casing completely secures in position, the blade or other instrument to
be used, so that it cannot turn over, either in one direction or in the other, without a
spring being required for retaining the blade. Furthermore, those blades, which are
out of use, cannot project over the casing, and thus give rise to accidents which
sometimes occur in ordinary pocket-knives.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare, that I claim :-
A springless pocket-knife, having a casing composed of hinged parts a, b d, adapted
to completely enclose the individual blades, corkscrews and other instruments, to
secure in its position any individual blade or other instrument, after it has been
drawn out for use, while the other parts remain concealed in the casing, and to
facilitate the cleaning of the blades as well as of the casing, substantially as described.
Dated this 7th day of December 1889.
MAX STEINBERG.
By Fairfax & Wetter,
433, Strand, London, Agents.