IMPROVEMENTS IN SPRINGLESS CLASP KNIVES AND OTHER LIKE ARTICLES
Year: 1880

page_text: LETTERS PATENT to Carl Kesseler, of 63, Mohrenstrasse, Berlin, W., in the
Empire of Germany, Civil Engineer and Patent Solicitor, for an Invention of
"IMPROVEMENTS IN SPRINGLESS CLASP KNIVES AND OTHER LIKE ARTICLES."
A communication from Messieurs Boentgen and Sabin, Manufacturers, at
Solingen, Kingdom of Prussia, in the Empire of Germany.
PROVISIONAL SPECIFICATION left by the said Carl Kesseler at the Office
of the Commissioners of Patents on the 12th April 1880.
CARL KESSELER, of 63, Mohrenstrasse, Berlin, W., in the Empire of Germany,
Civil Engineer and Patent Solicitor. "IMPROVEMENTS IN SPRINGLESS CLASP
KNIVES AND OTHER LIKE ARTICLES." A communication from Messieurs Boentgen
and Sabin, Manufacturers, at Solingen, Kingdom of Prussia, in the Empire of
Germany.
This Invention relates to the manufacture of knives and other articles for the
pocket, such as pen, erasing, hunting-knifes, razors, surgical instruments, and so
forth, forks, corkscrews, buttonhooks, nailfiles, pocket combs, etcetera, and generally
to objects which are to be shut as pocket knives usually are.
The Invention consists in the arrangement of a shell divided longitudinally and
in its breadth, which forms the handle, each part of such shell being free to turn
on a pin or stud connecting it with the blade.
These shells can be turned over the blade, so that it is completely hidden therein,
and are united on the end opposite to the turning pivots by a clasp. If the knife
or other tool is to be opened, the clasp is loosened, the shell (or handle) halves are
turned right back round their pivots, and in so doing take in a stud projecting
somewhat from one or both sides of the blade a little behind the axis of rotation of
the shells. If now the clasp is replaced upon the shell-halves the knife remains
open, and the blade cannot snap to in any direction. A further improvement
consists in making the metal lining of the shells alone, or together with the checks
covering the axis of rotation outside, out of a single piece.

page_text: .
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Carl Kesseler in the Great Seal Patent Office on the 12th
October 1880.
CARL KESSELER, of 63, Mohrenstrasse, Berlin, W., in the Empire of Germany, Civil
Engineer and Patent Solicitor. "IMPROVEMENTS IN SPRINGLESS CLASP KNIVES 5
AND OTHER LIKE ARTICLES." A communication from Messieurs Boentgen and
Sabin, Manufacturors,-at-Solingen, Kingdom of Prussia, in the Empire of
Germany.
The Invention relates to the manufacture of knives and other articles for the
pocket, and consists in the arrangement of a shell divided longitudinally and in its 1
breadth, which forms the handle, each part of such shell being free to turn on a pin
or stud connecting it with the blade. These shells can be turned over the blade,
so that it is completely hidden therein, and are united on the end opposite to the
turning pivots by a clasp. If the knife or other tool is to be opened, the clasp is
loosened, the shell (or handle) halves are turned right back round their pivots, and 1
in so doing take in a stud projecting somewhat from one or both sides of the blade
a little behind the axis of rotation of the shells. If now the clasp is replaced upon
the shell-halves the knifo remains open, and the blade cannot snap to in any
direction.
A further improvement consists in the application of the metal lining of the a
shells alone, or together with the checks covering the axis of rotation outsido, out
of a single piece.
Reference being now had to the accompanying Drawings, in which like figures
represent like parts, Fig. 1 shows a knife open, the two parts of the handle being
closed and secured by the clasp; the dotted lines show the two halves partly open,
and the clasp hanging loose; Fig. 1ª is an end view of the handle when clasped ;
Fig. 2 shows the same knife closed; Fig. 3 is an edge view of Fig. 1; and Fig. 4
a cross section through Fig. 2; Fig. 5 is a cross section of Fig. 1 looking towards
the clasp.
a, a, are the two halves of the handle; b, b, Figs. 10, 4, and 5, the lining; c, c, the
turned over ends or checks of lining; d, d, the pivots upon which the half handles
turn; e the clasp; f, the stud taking into the recesses g, g, when tho knife is
64 open" for use; and is the blade.
To uso the closed knife as in Fig. 2, open the clasp e, turn over the half
handles a, a, till they meet, and reclose the clasp c. The stud will now bo
enclosed by the recesses g, g, and the open knife will be found firm and ready
for use
Having now described my Invention, and the method of performing the same,
I wish it to be understood that what I claim and desire to protect by Letters
Patent is,-
1st. The herein described construction of handles for knives or the like, divided
lengthwise and pivotted, so as to fold over as a sheath or covering to protect the
blade when not in use, or to fold back as a handle and expose the blade for use,
substantially as set forth and shown.
2nd. The herein described construction of handles for knives or other like
articles, divided and pivotted, so as to fold back and embrace in suitable recesses g, g,
a stud or studs f, whereby the blade may be securely held by the handle when

page_text: 3rd. In a divided knife-handle the application of the metal lining and turned
over ends or checks in one pieco, substantially as set forth and shown.
In witness whereof, I, the said Carl Kesseler, have hereunto set my hand
and seal, this Seventh day of October, in the year of our Lord One
thousand eight hundred and eighty.