Improvements in Pocket Knives.
Year: 1892

page_text: Date of Application, 23rd Apr., 1892
Complete Specification Left, 19th Jan., 1893-Accepted, 25th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Pocket Knives.
I, JOHN RODGERS, of 6 Norfolk Street Sheffield in the County of York,
Manufacturer do hereby declare the nature of my invention to be as follows :-
-
This invention has for its object to construct a springless, blade locked knife, but
it may be applied to spring knives also.
The handle may be made of any suitable material, and of any form that will lend
itself to the plan of construction. In a knife having a blade at each end, the
handle will have a longitudinal groove from end to end to receive the blades which
turn upon pins in the usual manner. Upon each end of the handle I fix a ferrule
or cap, capable of being turned round or partly round, and provided with a
slot to allow the blade to pass through to position. When the blades are closed,
the ferrules are turned partly round, covering the butt ends of the blades, and thus
locking them in the closed position.
When a blade is required for use, the ferrule or cap is turned back until the slot
is opposite the blade, in which position it can be opened, and be again locked by a
turn of the ferrule. The ferrules may be secured to the handle in any suitable
manner.
Dated the 22nd day of April 1892.
ROBT. F. DRURY,
Bank Buildings, George Street, Sheffield, Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Pocket Knives.
I, JOHN RODGERS of 6 Norfolk Street, Sheffield in the County of York,
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 has for its object to construct a springless knife with provision by
which the blade or blades can be locked both when open and when closed, which
device for locking the blades may be also applied to knives having springs.
I have illustrated my invention in its most simple form of application to a single
bladed knife, in the annexed sheet of drawings, in which,
Figs. 1, 2, 3, show various forms of locking rings or ferrules; No. 4, a blade with
notches for receiving the locking ring Fig. 3
Fig. 5, two views of a single piece handle made to receive the ring and the
blade.
Figs. 6, 7, & 8 different views of the finished knife.
Similar letters of reference indicate similar parts in any of the figures.
The handle or haft of the knife when made similar to the one shown in Fig. 5, of
the drawing, may be of any material, such as wood, ivory, or the like, and of any
pattern that will lend itself to the purposes of this invention.
The locking device may be constructed in the form of a ferrule such as shown in
Fig. 1, a flat broad ring as Fig. 2, or a wire ring as No. 3, the latter form being the
one that I prefer.
I cut a groove G, as shown and indicated in Fig. 5, in the handle H, to receive
the blade B, Fig. 4, and I make a groove or annular recess R, round the end of the
handle, in the position shown or thereabouts.

page_text: I preferably make a shallow slot S, on each side of the butt end of the blade,
and in such a position that either one or the other will come into juxtaposition with
the annular recess R, when the blade is open and when it is shut.
I now take the ring or locking device L, which I prefer to make of steel,
hardened and tempered and therefore elastic, and force it over the end of the
handle and into the recess R, where it clasps the handle with some degree of force
but always so that it can be turned round or partly round by the fingers. The ring
is made with a gap or mouth M, of the same width or thereabouts as the groove G,
preferably a little wider, and it will be seen that when the blade is closed, and the
ring is turned as in Fig. 6, the blade is locked in the handle.
When the ring is turned with the mouth M, as in Fig. 7, the blade B, can be
opened, or if open it can be closed, and when open the ring is again turned as
shown in Fig. 8, which effectually locks the blade and prevents it accidentally
closing.
The flat ring or ferrule may be threaded and work or turn upon a corresponding
thread made upon the handle, and a slot and pin may be used to regulate the amount
. of its movement.
A knife having a blade at each end of the handle would be provided with a locking
ring at both ends such as hereinbefore described.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is or may be performed, I declare that what I
claim is:-
1-A springless knife, the blade of which will open and shut, and which is
retained and locked in both the open and closed position by means of a ferrule or
ring secured on the end of the handle but capable of being turned, and having a
mouth or gap through which the blade can pass, substantially as described and
shown.
2-A knife in which the blades can be locked, by turning a ferrule or ring;
secured upon the handle, and having a gap or mouth through which the blade or
blades can be passed, substantially as hereinbefore described.
Dated the 10th day of January 1893.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.