Improvements in Securing Knife Blades, Tools, and the like in their Handles or Holders.
Year: 1894

page_text: COMPLETE SPECIFICATION.
Improvements in Securing Knife Blades, Tools, and the like in their
Handles or Holders.
I, HERBERT JOHN HADDAN, of the Firm of Herbert Haddan & Co., of
18 Buckingham Street, Strand, W.C., London, Civil Engineer, do hereby declare
the nature of this invention a communication to me from abroad by Horace
Stephen Buckland, of Fremont, in the County of Sandusky, and State of Ohio,
United States of America, Attorney-at-Law and Manufacturer, and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
This invention relates to improvements in devices for securing a knife-blade or
working-member of a tool within a chambered handle, ferrule, shell or holder, the
object being to provide means for the purpose indicated that is exceedingly simple
in construction and consequently comparatively inexpensive; that can be easily
applied, and whereby the blade is so firmly held within the handle, ferrule or
holder that it is not liable to become displaced or loose by use.
With this object in view, the invention consists in certain features of con-
struction and in combinations of parts hereinafter described and pointed out in the
claims.
In the accompanying drawings,
Figure 1 is a side elevation showing the improved means for securing a knife-
blade within its handle or receiving-ferrule or holder, the latter being shown partly
in central longitudinal section.
Fig. 2 is a side elevation, partly in section, showing the manner of assembling
the parts.
Fig. 3 is a plan of a blank employed in the formation of the fastening-device
embodying the invention.
Fig. 4 is a view in perspective of the fastening-device.
Fig. 5 shows a blank for the formation of a fastening-device somewhat modified
in construction from that shown in Figs. 3 and 4, but also within the scope of the
invention, and Fig. 6 is a perspective of the same.
Figs. 7 and 8 correspond with Figs. 3 and 4, excepting that in Figs. 7 and 8 the
fastening-device is shown composed of two pieces, whereas in Figs. 3 and 4 it is
shown composed of a single piece.
Fig. 9 is a side elevation, partly in section, showing a peculiarly constructed
knife-blade secured within its holder or handle by a fastening-device embodying
the invention.
Referring to the drawings, A designates a chambered handle-ferrule, or
receiving-shell or holder in which is introduced and suitably secured the shank b
of a working tool, such, for instance, as a cutting-blade B. Blade B is shown
suitably secured against the interior surface of the handle, shell, ferrule or
holder A, and the fastening-device employed for the purpose of securing member B
in place is of the following construction.
The fastening-device, in Figs. from 1 to 4 inclusive, is shown to consist of a
single piece, preferably of sheet metal, and the blank C shown in Fig. 3 and
suitable for the formation of the fastening-device shown in Fig. 4, consists of three
members C¹ C¹ and C² arranged in line as shown, the two end-members C¹ C¹
being substantially the same in construction and adapted, when bent laterally as
hereinafter described, to fit the handle, shell, ferrule or holder A internally. The
blank is bent into the shape shown in Fig. 4; that is the central member or
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page_text: web C² of the blank, at two points located a suitable interval apart, is bent
laterally, as at C³, in the same direction on lines extending longitudinally of the
blank, and the end members C¹ C₁, at the junction of said members with the central
member or connecting web are bent laterally in the same direction so as to be
capable of being subsequently folded or pressed against the ends of the laterally
bent portions of web or member C2. The end-members C'C' of the blank are
also slotted laterally, as at C, with the slots extending from the central portion
to the adjacent end of the blank and open at their outer ends, as shown. The
blank having been formed and bent into the shape hereinbefore described, the
shank of the cutting-blade or working-tool and the bent blank are introduced
into the handle, shell, ferrule or holder A to which the blade or working-tool is
to be secured with the shank of said tool engaging the lateral slots in the end-
members of the blank, as shown in Fig. 2, and the end-members are thereupon,
by means of suitable devices, pressed laterally against the stop-forming-members C³
formed upon the central member or web of the blank or fastening device, thereby
completing the fastening-device and bringing the end-members of the fastening-
device into a vertical position, and causing the shank of the cutting-blade or
working-tool to be pressed or clamped outwardly against the interior surface of
the handle, ferrule or receiving-shell or holder, thereby causing the parts to be
securely held together, as shown in Fig. 1.
The blank shown in Fig. 5, and suitable for the formation of a fastening-device
embodying this invention, consists of an oblong metallic plate slotted laterally and
longitudinally, as at d. Said slot does not extend from end to end of the blank,
and hence, has end-walls d' d. The blank, in order to form the fastening-device
is bent laterally on dotted lines d' that is, the blank is bent laterally at a suitable
point between each end of the slot in the blank and the central portion of the
blank, both ends of the blank being bent in the same direction, as shown in
Fig. 6, and not beyond an obtuse angle to the central portion of the blank. In
securing the working-member of a tool, such, for instance, as the blade of a
knife, within the handle, ferrule or holder, by means of the fastening-device
illustrated in Figs. 5 and 6, the fastening-device and working-member of the tool
are introduced into the handle or holder as shown in dotted lines, Fig. 9, with the
knife-blade resting upon the end-walls of slot C¹, and thereupon, by means of
any tools or devices suitable for the purpose, the end-members of the fastening-
device are pressed toward each other so as to elevate the knife-blade or working
member of the tool and clamp the same against the internal surface of the handle
or holder, as shown in said figure. If desirable, the central portion of the
blank may be enlarged in width, to form members or stops, such as C³ in Fig. 4.
Also, if desired, the fastening-device may be composed of two pieces as shown
in Figs. 7 and 8.
Also, the blade or working-member of, the tool may be cut away, as at B',
Fig. 9, at two points located a suitable distance apart, to form two shoulders B² B³
presenting in opposite directions, respectively, with the arrangement of parts such
that when the knife-blade or working-member of the tool is clamped against the
internal side of the handle or holder, one end-member of the fastening-device shall
engage one of said shoulders and the other end-member of the blank shall engage
the other shoulder, said shoulders also assisting in preventing the knife-blade or
working-member of the tool from working endwise in the use of the tool.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A fastening-device for securing a knife-blade or working-member of a tool
into a hollow or chambered handle, ferrule or shell, consisting of two members
located a suitable interval apart, said members straddling the shank of the
kuife-blade or member to be secured and clamping the same against the interior
surface of the handle, ferrule or shell, substantially as set forth.

page_text: 2. A fastening-device, for securing a knife-blade or working-member of a tool
into a hollow or chambered handle, ferrule or shell, consisting of two members
located a suitable interval apart and adapted to fit the handle, ferrule or shell
internally, said members being slotted to straddle the shank of the knife-blade or
the member to be secured and clamp the same against the interior surface of the
handle, ferrule or shell, substantially as set forth.
3. A fastening-device for securing a knife-blade or working-member of a tool
within a handle, ferrule or holder, consisting of two securing-members located a
suitable interval apart and slotted or cut to receive the blade or working-member
of the tool, and suitable means for holding said securing-members apart,
substantially as set forth.
4. A fastening-device for securing a knife-blade or working-member of a tool
within a handle, ferrule or holder, consisting of two members located a suitable
interval apart, said members straddling or embracing the blade or working-member
of the tool and securing the same within the handle, ferrule or holder, said
members being connected by a web and the latter being bent to be engaged by
the opposing sides of the members, substantially as and for the purpose set forth.
5. A fastening-device substantially as shown, for the purpose specified.
Dated this 18th day of September 1894.
H. J. HADDAN.