Improved Joint for Attaching Knife Blades and other Articles to Handles.
Year: 1895

page_text: Date of Application, 21st Nov., 1895-Accepted, 7th Mar., 1896
COMPLETE SPECIFICATION.
Improved Joint for Attaching Knife Blades and other Articles
to Handles.
1, EDWARD QUINCY NORTON, residing at Daphne, in the County of Baldwin,
and State of Alabama, United States of America, do hereby declare the nature of
this invention and in what manner the same is performed to be particularly
described and ascertained in and by the following Specification :-
This invention relates to knives and similar tools, or devices, and the object
thereof is to provide improved means for connecting the blades of knives with the
handles thereof, and for connecting other attachments, such as keys, files, and
similar articles, with a handle, and with this and other objects in view the invention
consists in the construction, combination and arrangements of parts hereinafter
described.
The invention is fully disclosed in the following Specification of which the
accompanying drawing forms a part, in which :-
Fig. 1, is a side elevation of a knife with part of the handle broken away, and
showing my improved means for connecting the blade with the handle and also for
connecting other articles, such as a key, and a pair of scissors therewith;
and
Fig. 2, is a side view of the knife blade showing my invention, or a portion
thereof.
In the accompanying drawing A, represents an ordinary knife handle composed
of two sides and provided with a back spring as a, and said handle is provided at
each end with jaws B, and these parts are of the usual and well known construction.
The back spring a, is square or straight, at its outer end as shown at a', and
passing through the jaws B, are the usual pivotal pin C, and in the practice of
my invention, I form in the shank of the blade D, a slot d, at the inner end of
which is formed, in the outer side of the shank, a circular enlargement or cavity d.
The inner end of the slot d, by reason of the circular cavity or recess d', is almost
circular in form, and is adapted to receive the pivotal pin C, which passes through
the jaws B, and it will be observed that this inner end of the slot d occupies the
central portion of the shank d 2, of the blade, and that the walls of the slot d, are
inclined outwardly and extend in the direction of the point of the blade and open
at the inner corner of the head d 3, thereof as shown at d 4.
The outer end of the shank d 2, is rounded or circular in form, as shown at d 5,
and by means of the form of the slot d, the inner side of the shauk d 2, and the
head d 3, of blade is formed into a pointed projection d 6.
In the normal position of the spring a, before the blade or other article is
connected with the pivotal pin C, the end thereof will rest upon said pivotal pin,
and whenever it is desired to connect the blade D, with the handle it is only
necessary to hold it in position of the blade shown in Fig. 1, and to press the
pointed projection d 6, of the shank between the end of the spring and the pivotal
pin C, and to shove the blade into position, and as will be readily understood, and
as shown in said Fig. 1.
The blade will be securely held in this position by means of the spring and the
operation thereof will be the same as in other devices of this class. When the
blade is open, the circular head of the shank d 2, will press the spring out and

page_text: when the blade is in the extended position as shown in Fig. 1, or as shown by the
key E, at the left hand of Fig. 1, the shoulder d7, thereon will strike against the
end of the spring and thus said blade will be securely held in the desired position
when open. The blade can only be removed by reversing the operation above
described, by which it is placed in position, and means may be employed for forcing
back the spring so as to move or insert the blade.
By means of this construction, it will be seen that a new blade may at any time
be substituted for the old one, and that blades of different sizes may be alternately
employed.
It will also be observed that, as shown in the drawing, other articles besides
blades may be connected with the handle A, in the same manner all that is
necessary being to provide such articles with a shank having a slot, said parts
being of the form and construction herein described.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination with a handle, provided with a back spring as a, of a blade
or other implement provided with a shank and head in which is formed a slot,
which opens adjacent to the spring at the inuer side of the head, said slot being
extended into the shank, and provided with a circular enlargement or cavity at one
side thereof, through which passes a pivotal pin by which it is connected with the
handle, substantially as shown and described.
2. The combination with the handle, provided with a back spring as a, of a blade
or other implement or tool adapted to be pivotally connected with the end thereof,
and said blade or other implement being provided with a head and a shank in
which are formed an inclined slot, which opens inwardly and the inner end of
which is provided with a circular cavity or recess through which the pivotal pin
passes, said blade or other implement being also provided with a shoulder which is
adapted to abut against the end of the spring, when the blade or other implement
is open, substantially as shown and described.
3. The combination with a handle, provided with a back spring as a, of a blade
or other implement or tool, adapted to be pivotally connected with the end thereof,
said blade or other implement being provided with a head and a shank in which is
formed an inclined slot, which opens inwardly and the inner end of which is
provided with a circular cavity or recess through which the pivotal pin passes, said
blade or other implement being also provided with a shoulder which is adapted to
abut against the end of the spring, when the blade or other implement is open, and
said circular cavity or recess in the shank, at the end of the slot, being formed on
the side thereof, adjacent to the spring when the blade or other implement is open,
and said circular cavity or recess in the shank, at the end of the slot, being formed
on the side thereof, adjacent to the spring when the blade or other implement is
closed, substantially as shown and described.
4. A knife blade or other implement provided with a head and shank said head
and shank being provided with a slot which opens at the inner portion of the head
adjacent to the edge of the blade and extends to near the central portion of the
shank, where it is provided on the inner side thereof, with an enlarged circular
cavity or recess, which is adapted to receive the pivotal pin, by which the blade
or other implement is connected with the handle, substantially as shown and
described.
5. The combination with a handle, as A, composed of separate sides between
which is pivoted a spring as a, of a blade or other implement having a head and
shank, and provided with a slot, formed therein, which extends through the head
and shank, and opens at the inner portion of the head, and the inner end thereof
which occupies the central portion of the shank, being provided one side with a
circular cavity or recess through which the pivotal pin passes, said blade or other
implement being also provided with a shoulder which abuts against the spring

page_text: when the blade or other implement is open, and the end of the shank being rounded
or circular, substantially as shown and described.
Dated this 17th day of November 1895.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.