AN IMPROVED KNIFE WITH SLIDING AND ROCKING SHEATH
Year: 1884

page_text: I CHARLES FRÉDÉRIC HERZOG of Boulevard Saint Denis N° 1 at Paris Merchant
do hereby declare the nature of my invention for "AN IMPROVED KNIFE WITH
SLIDING AND ROCKING SHEATH" to be as follows:-
My invention consists in constructing pocket knives and other knives with a
sliding sheath which when slid to the end of the handle can be made to turn upon
a pin or centre in such manner as to pass laterally into the handle while the blade
which is drawn into this movement of the sheath passes laterally out of the handle
and moves into position for use.
In carrying out the invention there is introduced into the knife handle a sheath
in the sides of which are longitudinal guide grooves. The blade is within the
sheath and is fixed to the front end of the handle by means of a rivet which also
passes through the guide grooves of the sheath. At each side of the sheath is a
roughened enlargement or boss which projects beyond the handle and is for the
purpose of allowing the sheath to be pushed up or down by the fingers. When it
is wished to open the knife the sheath is pushed up by means of the bosses and
this movement disengages a spring which is fixed to the handle and enters slightly
into a notch of the sheath so as to hold it sufficiently when at rest. This spring
being thus disengaged the sheath is pushed up to the top of the handle the rivet of
the blade acting as a guide to the movement, while the blade remains within the
handle. Then the sheath is made to turn backwards upon its centre so as to enter
the handle laterally and as the lower part of the sheath has a firm hold on the heel
of the blade the latter participates in the turning movement and thus passes out of
the handle and takes up its position for use. A tenon on the sheath is then forced
into a notch in the lower part of the handle; during this time the spring above
described again engages automatically into the notch of the sheath. The sheath is
thus firmly held in the handle and itself rigidly maintains the blade in place.
In order to close the knife, the sheath and blade are turned in the reverse
direction on their centre and then the sheath is made to slide back into the
handle.
For knives with two or more blades a corresponding number of sheaths are
employed, one for each blade, and placed side by side or end to end according to
the position of the blades.
DJ Now of Tennom 1884
J..C. MEWBURN,
Agent for the Applicant..

page_text: I CHARLES FRÉDÉRIC HERZOG of Boulevard Saint Denis N° 1 at Paris Merchant
do hereby declare the nature of my invention for AN IMPROVED KNIFE WITH
SLIDING AND ROCKING SHEATH and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:-
My invention consists in constructing pocket knives and other knives with a
sliding sheath which when slid to the end of the handle can be made to turn upon
a pin or centre in such manner as to pass laterally into the handle while the blade
which is drawn into this movement of the sheath passes laterally out of the handle
and moves into position for use.
Figure 1 of the annexed drawings is a side view of a pocket knife constructed
according to my invention, the sheath being seen pushed to the end of the handle
and the blade being within the handle. Figure 2 is a longitudinal section with
the sheath reversed and the blade, which has followed the reversing movement of
the sheath, in position for use, that is to say, held rigidly open. Figure 3 is a
section at right angles to Figure 2 and showing the parts in the same position, the
position of the sheath when at the end of the handle being also indicated in dotted
lines. Figure 4 shows the knife closed. The construction shown is as follows:-
Into the handle a is introduced a sheath b in the sides of which are longitudinal
guide grooves c. The blade d'is within the sheath b and is fixed to the front end
of the handle by means of a rivet f which also passes through the guide grooves of
the sheath: At each side of the sheath is a roughened enlargement or boss g which
projects beyond the handle and is for the purpose of allowing the sheath to be
pushed up or down by the fingers. When it is wished to open the knife the
sheath is pushed up by means of the bosses g and this movement disengages a
spring which is fixed to the handle and enters slightly into a noteli i of the
sheath so as to hold it sufficiently when at rest. This spring being thus disengaged
the sheath is pushed up to the top of the handle the rivet of the blade acting as a
guide to the movement, while the blade remains within the handle. Then the
sheath is made to turn backwards upon its centre so as to enter the handle laterally
and as the lower part of the sheath has a firm hold on the heel j of the blade the
latter participates in the turning movement and thus passes out of the handle and
takes up its position for use. A tenon k on the sheath is then forced into a notch n
in the lower part of the handle; during this time the spring / again engages
h
'automatically into the notch i of the sheath. The sheath is thus firmly held in the
handle and itself rigidly maintains the blade in place.
In order to close the knife, the sheath and blade are turned in the reverse
'direction on their centre and then the sheath is made to slide back into the
*handle.
For knives with two or more blades, a corresponding number of sheaths are
employed, one for each blade, and placed side by side or end to end according to
the position of the blades.
ป
Having now particularly described and ascertained the nature of my said
invention. and in what manner the same is to be performed I declare that what
I claim is
Constructing pocket knives and other knives with a sheath within the handle
which sheath can be slid out to the end of the handle and then turned upon a pin

page_text: or centre in such manner as to pass laterally into the handle while the blade is
drawn into this movement of the sheath and passes laterally out of the handle and
moves into position for use, substantially as hereinbefore described with reference
to the annexed drawings.
Dated this 26th day of Sentember 1024