U.S. patent number 3,741,542 [Application Number 05/114,586] was granted by the patent office on 1973-06-26 for arrowhead with removable blades.
This patent grant is currently assigned to Brunswick Corporation. Invention is credited to Richard S. Karbo.
United States Patent |
3,741,542 |
Karbo |
June 26, 1973 |
ARROWHEAD WITH REMOVABLE BLADES
Abstract
A readily disassemblable hunting arrowhead including a first
blade engaged in a slot communicating with the front end of the
collet and a second blade, orthogonal to the first, engaged in a
second slot communicating with the rear end of the collet.
Rearwardly and inwardly extending portions of the blades form wedge
shaped elements which are engaged and wedged onto the collet by a
beveled ferrule threaded onto the rear of the collet. There is a
windsplit attached to the collet in front of each side edge portion
of the second blade.
Inventors: |
Karbo; Richard S. (Whittier,
CA) |
Assignee: |
Brunswick Corporation (Chicago,
IL)
|
Family
ID: |
22356164 |
Appl.
No.: |
05/114,586 |
Filed: |
February 11, 1971 |
Current U.S.
Class: |
473/584 |
Current CPC
Class: |
F42B
6/08 (20130101) |
Current International
Class: |
F42B
6/08 (20060101); F42B 6/00 (20060101); F41b
005/02 () |
Field of
Search: |
;273/16.5B |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Pinkham; Richard C.
Assistant Examiner: Shapiro; Paul E.
Claims
What is claimed is:
1. A readily disassemblable hunting arrowhead comprising:
an elongated collet having a first axial slot communicating with
the front end thereof and a second axial slot substantially
orthogonal to said first slot and communicating with the rear end
thereof,
a first substantially triangular blade comprising the tip of the
arrowhead and having a rear undercut portion adapted to fit within
said first slot,
a second substantially triangular blade adapted to fit within said
second slot, said first and second blades having portions extending
rearwardly of the cutting edges thereof, said rearwardly extending
portions of said first and second blades are outward of said collet
and inclined radially inwardly and toward the rear end thereof,
and
means for retaining said blades in a position within said collet
including means encompassing said rearwardly extending portions
removably engageable upon the rear end of said collet for retaining
said blades in place, said means further including a ferrule having
its forward inner surface beveled substantially parallel to said
incline so as to engage said inclined portions and wedge them
inwardly upon being engaged upon said collet.
2. A readily disassemblable hunting arrow comprising:
an elongated collet having a first axial slot communicating with
the front end thereof and a second axial slot substantially
orthogonal to said first slot and communicating with the rear end
thereof,
a first substantially triangular blade comprising the tip of the
arrowhead and having a rear undercut portion adapted to fit within
said first slot,
a second substantially triangular blade adapted to fit within said
second slot, said first and second blades having portions extending
rearwardly of the cutting edges thereof, said second blade
comprising a unitary structure including a body portion adapted to
ride within said second slot and two side edge portions each
extending along the surface of said collet from a point forwardly
of said second slot and angling radially outward and rearwardly
therefrom, and
means for retaining said blades in position within said collet
including means encompassing said rearwardly extending portions and
removably engageable upon the rear end of said collet for retaining
said blades in place, said collet includes a plurality of
windsplints each terminating at the most forward point of the side
edge portion of said second blade.
3. A readily disassemblable hunting arrowhead comprising:
a. an elongated collet having a first axial slot communicating with
the front end thereof and a second axial slot substantially
orthogonal to the first slot and communicating with the rear end
thereof;
b. a first substantially triangular blade comprising the tip of the
arrowhead and having a rear undercut portion adapted to fit within
the first slot;
c. a second substantially triangular blade adapted to fit within
the second slot, the first and second blades having portions
extending rearwardly of the cutting edges outward of the collet and
inclined radially inwardly and toward the rear end thereof;
and,
d. a ferrule removably engageably mounted on the rear end of the
collet, the ferrule having its forward inner surface beveled
substantially parallel to the inclined portions of the blades so as
to engage the inclined portions and wedge them inwardly upon being
engaged upon the collet.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to archery equipment and more
particularly to arrowhead constructions.
2. Description of the Prior Art
The arrowhead of the present invention is an improvement over an
arrowhead construction described in U. S. Pat. application Ser. No.
47,219 filed June 18, 1970 now abandoned. In that application the
arrowhead comprised a collet having a frontal point secton and four
segmental sections extending rearwardly therefrom. A pair of blade
members are positioned to extend through the slots formed between
the collet segments and extend radially outward therefrom. A collar
is provided to be threadedly connected to the rear extremities of
the segments to hold the segments together and secure the blades
thereto.
A shortcoming with the arrowhead of the prior application is that
the frontal point section of the collet is not sharp enough to have
the desired piercing quality. As a result, the blades, which have
novel razor cutting edges, do not have the opportunity to function
properly to provide deadly cutting edges for killing game.
Another shortcoming with the arrowhead of the abandoned application
is that the interchanging of the blades is cumbersome. Moreover,
since these blades are not secured to the collet until the collar
is installed, the blades would quite often fall out and become lost
during assembly.
SUMMARY OF THE INVENTION
The present invention overcomes the above-mentioned shortcoming by
providing an arrowhead having a greatly improved frontal point
section for a greater piercing capability and a novel
interconnecting means for greater ease of assembly. The improved
arrowhead comprises an elongated substantially cylindrical collet
having a slotted frontal area and a threaded rear extremity. A
first triangular blade is provided having a frontal point section
and two legs extending rearwardly therefrom. The blade further
comprises a cut-out portion having an interior apex where the two
legs originate. The interior apex of the blade is adapted to extend
into the slotted frontal area of the collet while the legs are
adapted to extend longitudinally along the sides of the collet. The
interior of the legs form a pair of foot sections which are adapted
to snap into engagement with a pair of axial grooves formed near
the rear end of the collet. The exterior edges of the blade
extending from the apex of the frontal point rearwardly along the
exterior edges of the legs are finely honed to a razor sharpness to
enhance the piercing and cutting capabilities of the arrowhead. The
rear end of the collet further comprises a transverse slot
separating that portion of the collet into two segments. A second
blade is adapted to extend into the slot with the blade having two
razor edges extending radially outward therefrom for cutting
purposes. A ferrule is provided to be connected to the threaded end
of the collet with the ferrule further comprising an annular
flanged portion which is adapted to extend over the foot portions
of the first blade and portions of the second blade for securing
the blades to the collet.
An important advantage of the present invention is the piercing and
cutting portions of the arrowhead are integral in a single
removable blade. Not only are both sections honed to a razor
sharpness, but if they become dull, the blade can be easily
interchanged with a new blade.
Another important advantage of the present invention is that the
blade changing can be accomplished easier and quicker than
heretofore possible.
The features of the present invention which are believed to be
novel are set forth with particularity in the appended claims. The
present invention, both as to its organization and manner of
operation, together with further objects and advantages thereof,
may best be understood by reference to the following description,
taken in connection with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an exploded perspective view of the arrowhead assembly of
the present invention;
FIG. 2 is an elevational view of the arrowhead in its assembled
form; and
FIG. 3 is a sectional view of the arrowhead taken along line 3--3
of FIG. 2 .
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings, FIGS. 1 - 3 show a detachable
arrowhead assembly, generally indicated by arrow 10 comprising a
substantially cylindrical collet 11 having a first and second
blades 13 and 15 respectively, mounted thereon. The collet 11
includes a slotted frontal area 17 and a threaded rear extremity
19. The first blade 13 is triangular in shape having a frontal
point section 21 and a pair of legs 23 extending rearwardly
therefrom. The exterior edges 24 of the blade 13 extending from the
apex of the frontal point rearwardly along the exterior edges of
the legs 23 are finely honed to a razor sharpness to enhance the
piercing and cutting capabilities of the arrowhead 10.
The interior of the first blade 13 includes a triangular cut-out
portion 25 in which the apex, where the two legs 23 originate, is
adapted to extend into the slotted frontal area 17 of the collet
11. The collet 11 further includes a pair of axial grooves 27 which
are adapted to receive two inwardly extending foot portions 29 of
the legs 23. Because of their flexibility, the legs 23 are adapted
to snap into engagement with the grooves 27 after the interior apex
of the blade is inserted into the slotted frontal area 17 of the
collet 11. As can be seen, the first blade 13 not only comprises
the cutting edges 24, but it further comprises the frontal point
section 21 integrally formed therewith. The advantage of this is
that when the blade 13 becomes worn, a new blade can be installed
not only having sharp cutting edges, but having a sharp point
also.
The collet 11 further comprises a transverse slot 31 formed through
the rearward portion thereof for receiving the second blade 15.
The second blade 15 comprises a recessed portion 33 adapted to
extend to the forward end of the slot 31 with the forward portions
of the recess initiating a pair of radial cutting edges 35
extending radially outward therefrom. The rearward portion 37 of
the second blade 15 is adapted to extend into the transverse slot
31 adjacent the threaded end 19 of the collet 11.
A pair of windsplits 38 is also formed on the forward end of the
collet 11 and is positioned directly in front of the cutting edges
35 of the blade 15 for protecting the points 40 of the blade
15.
The arrowhead assembly 10 further comprises a ferrule 39 which is
adapted to be threadedly connected to the collet 11. The ferrule 39
further comprises a frontal annular flanged portion 41 which is
adapted to extend over the portion of the collet which contains the
rear portion 37 of the second blade 15 and the foot portions 29 of
the first blade 13. For securing these portions to the collet, the
exterior cylindrical surface 43 of the ferrule 39 is adapted to be
epoxyed into a bore 45 formed within the frontal end of an arrow
shaft 47.
In assemblying the arrowhead assembly, the first blade 13 is
mounted on the collet 11 in the manner described above. Afterwhich,
the second blade 15 is inserted through the transverse slot 31 with
both blades being secured thereto by the ferrule 39 which is
threadedly connected to the collet 11.
An advantage of the present invention is that when the blades 13
and 15 become worn, they can be easily replaced by simply
separating the collet 11 from the ferrule 39 and removing the first
and second blades 13 and 15 from the collet 11. Afterwhich, a new
set of blades 13 and 15 can be easily mounted on the collet 11
before it is threaded back onto the ferrule 39.
It should be noted that various modifications can be made to the
apparatus while still remaining within the purview of the following
claims.
* * * * *