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Патент USA US3021149

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Feb- 13, 1962
Filed July 6, 1959
v`United p States Patent
Patented Feb. 13, `1862
the body has a major and two minor bifurcations looking
rearwardly thereof.
Thus in accordance with the present invention, the
Burton l). Smith, Duarte, Calif.
main blade itself, not a mere appendage thereto, is de
tachable. The structure is simple, and the combined
ferrule and blade neither add nor detract materially from
the normal size, weight and shape of the conventional
Y The present invention relates to arrowhead structure
arrowhead. Combined with the foregoing characteris
and has particular reference to arrowhead blades, and
tics is the important fact that the ferrule provides a firm
ferrules for detachably mounting the blades on the for 10 and stable support for the blade so that the composite
ward end of an arrow shaft.
structure is comparable in strength and stability to the
The conventional hunting arrow used for large game
conventional one-piece arrowhead. The importance of
has a broadhead permanently affixed on the forward end
this becomes obvious when one considers the force and
of the shaft. The broadhead is kept razor sharp so that
impact to which the arrowhead is subject, -and related
if the arrow misses a vital spot it will nevertheless kill 15 facts such as the fact that distortion of the arrowhead
effectively by severing arteries and vessels, causing the
affects the flight of the arrow.
animal rapidly to bleed to death. Otherwise, with a dull
The problems pointed out with respect to the conven
blade, arteries and vessels tend to ride up and over it
tional arrowhead as related to the requirement that it
during passage and, unless a vital spot is hit, the animal
should have a razor-sharp edge are substantially resolved
20 by the arrowhead of the present invention. Thus em
will escape only to suffer unnecessarily.
The razor sharp arrowhead permanently connected on
ploying the arrowhead structure of the present inven
the end of the arrow shaft poses certain problems.
tion, one can easily remove the sharp blade from the
(7125 SW. Highway 217, Beaverton, Oreg.)
Filed July 6, 1959, Ser. No. 825,324
1 Claim. (Cl. 273-1065)
Among these first may be mentioned that such arrows are
arrows so that they are not dangerous to keep or trans
extremely dangerous objects and must be treated as such
port. The hunter ín the field can easily carry extra blades
at all times. Secondly, the hunter who conveniently car 25 and insert new blades as needed, leaving his sharpening
ries only a few arrows is burdened with the problem
problems at home. There is less deterrent to the use of
of sharpening arrowheads in the field as they become
hunting arrows for practice warm-up shots, and the re
dulled and nicked; and, the frequent sharpening of arrow
placement problem arising frorn blade breakage or from
heads eventually causes them to lose sufficient weight to
the eventual loss in weight due to sharpening is less con
upset the balance of the arrow. Moreover, the likeli 30 sequential, both in terms of time and money.
hood of dulling, nicking or breaking the arrowhead dis
The preferred embodiment of the arrowhead structure
courages the otherwise desirable use of hunting arrows
of the present invention is described in greater detail with
for practice warm-up shots in the field. Replacing a
reference to the accompanying drawings, in which:
worn or broken arrowhead is a tedious operation because
FIG. 1 is a plan view of a detachable arrowhead blade
of the strong permanent-type connection required between 35 constructed in accordance with the present invention;
the arrow shaft and the arrowhead.
In accordance with the present invention there is pro
vided an arrowhead structure including a ferrule adapted
to be fixed on the forward end of an arrow shaft, and
FIG. 2 is a plan view partially cut away showing the
blade of FIG. 1 inserted onto and locked to a ferrule con
structed in accordance with the present invention, the
ferrule being in turn affixed to the forward end of an
a cooperating substantially flat blade detachably insert 40 arrow shaft;
able onto said ferrule. The ferrule has a body, a lead
FIG. 3 is a side elevational of the apparatus of FIG. 2;
ing locating lug centered across the front end of the
FIG. 4 is a sectional view taken along line 4-4 of
body, and a pair of substantially coextensive spaced
FIG. 2;
flanges which extend laterally from each of opposite
FIG. 5 is a side elevation of the ferrule of FIGS. 2
sides of the body approximately in a common plane with 45 and 3 with the blade and shaft removed; and,
the leading lug, with each pair of flanges defining there
FIG. 6 is a fragmentary view taken along line 6-6 of
between an open longitudinal channel.
The rear outline
of the cooperating blade has a deep central recess, the
crotch of which matches the front configuration of the
FIG. 4;
Referring now to the drawings, there is shown a de
tachable arrowhead blade lil, and a cooperating ferrule
leading locating lug of the ferrule and portions of the 50 12 for mounting the blade on the forward end of an
surrounding margin of which fit within the longitudinal
arrow shaft 14. The blade and ferrule are made of
channels of the ferrule. Further, means are provided
steel and, together assembled, have the form of a broad
for releasably locking the blade on the ferrule.
head, as shown.
A ferrule constructed in accordance with the pre
The ferrule 12 comprises two mating half sections 16,
ferred embodiment of the invention includes a pair of 55 18 having bodyv portions 20, 22 respectively which to
trailing locating «lugs respectively disposed on opposite
gether constitute the body of the ferrule and which co
sides of the body in the channels formed between the
. operate to define a socket 24 for the front end of the
flanges. The ferrule is made from two mating half sec
arrow shaft 14. The ferrule is permanently connected
tions having body portions which cooperate to define
on the front end of the arrow shaft with conventional
a socket for the front end of an arrow shaft.
The half 60 heat setting cement.
The mating half sections 16, 18 have forward por
tions in the form of substantially flat tabs Z6, 28 re
spectively. The tabs are held together by a rivet 30. To
laterally extending side portions or flanges held together
they form a leading locating lug 32 which ex
in spaced relationship by cross members which form the
tends centrally across the front end of the body.
trailing lugs. Further, a detachable arrowhead blade
The first half section 16 has laterally extending oppo
constructed in accordance with the preferred embodi
site side portions or flanges 34 and 36. These flanges
ment of the present invention comprises a substantially
are paired with similar flanges 38, 40 respectively of the
flat body having a forward outline and a rear outline,
second half section 18. The result is a first pair of spaced
with the rear outline of the body having a deep central 70 and substantially coextensive flanges 34, 38 which define
recess and two relatively shallow recesses disposed respec
therebetween an open longitudinal channel 42, and a
tively on opposite sides of the central recess, whereby
second and similar pair of spaced and substantially co
sections have forward positions in the form of substan
tially flat tabs held together to form the leading lug, and
extensive flanges 36, 40 which define therebetween a
second and similar open longitudinal channel 44. The
ings 78, 80 drilled respectively through each> pair of,
lar and the recesses are open> and unobstructed along the
bladev having ay deep central recess and a relatively sha1-
flanges at a location adjacent the body of the ferrule.
When the blade 10 is inserted into the ferrule so that the
two `pairs of ñanges extend from opposite sides `of the
crotches of the recesses abut the locating lugs, the notches
body' of the ferrule, approximatelyI in a common planet
Ul 66, 68 register with the openings 78,` 80 so that the snap
with the leading locating lug.
ring 74 may be inserted. The. snap ring is itself notched
The flanges 34, 38 of the lirst' pair are securely held in
at opposite ends and conventionally, like a small spring,
spaced relationship by a tirst cross member 46 disposed
may be pressed into place whereby its notched ends snap
outwardly from the body of the ferrule and consisting>
outwardly over the. slanted edges of the notches 66, 68
of an annular spacer 48 secured in the channel 42 be-~
tween theI flanges by a rivet S0'. The annular spacer 48I 10 in the blade, as shown in FIGS. 4 and 6. The interposi
tion of the snap ring in the openings 78, 80 and within
acts as a first trailing locating lug.
the notches 66, 68 locks the blade, to the ferrule, and`
Similarly, the ñanges 36, 40 ofthe second pair are se.
the notched4 ends of the snap ring itself secure the snap’`
curely held in spaced' relationship by a cross member 52
ring in position by locking over the blade.
disposed outwardly from the body of the ferrule and con
As can be seen in FIG. 2, the arrow shaft is indented
sisting of an annular spacer 54 secured in the channel 44V 15
slightly at 82 to accommodate the snap ring so that, as.
between the flanges by a rivet 56'. The annular spacer
best seen in FIG. 3, the snap ring does not protrudey
54 acts» as a second trailing locating lug, correspondingly
from theY body of the ferrule, but lies substantially even
disposed on the opposite side of the body of the ferrule
with the surface of theferrule.
with respect to the first trailing locating lug.
I claim:
The cooperating blade 10 is a ñat piece of steel having
An- arrowhead construction comprisingA a ferrule
a» razor sharp-leading> edge 58. Its front outline, as de
adapted toi be fixed on the forward end of an arrow
fined by this edge, is that of the conventional broadhead.
shaft, the ferrule having a» body, a solid leading locating
Itf may,r of course, have a dilîerent front’ outline than
lug centered across the front end of the body, a pair of
that illustrated. The trailing edge or rear outline of the
blade is blunt- and has formed therein a relatively deep 25 substantially coextensive spacedrllanges extending lateral*
ly from each ofT opposite. sides. of. the body and. approxi.
central recess 60, and tworelatively shallow recesses 62,
mately in» af common. plane withA the leading lug, each-`
64 disposed» respectively on opposite sides of> the'centralI
pair of ñanges defining therebetween an open longitu-recess,rwhereby the blade has one major andv two minor
dinal channel, and also having a pair of trailing locating`
bifurcations` looking rearwardly thereof. A` notch 66
isL formed on the inner edge of a portion 67 of the blade 30 lugs respectively interconnecting said spaced flanges of.
each pair on` oppositey sides of the body and extending
lying between the central recess 604 and side recess 62;
across -said’ channels, said ferrule having an openingz
and, a corresponding notch 68 is formed on the inner.
through> each pair of llangesv and` an open slot whichex-edge of a portion 69 of the blade lying between thecen
tendsflaterally around its body between said openings in.
tral'recess ‘S0-and the other side recess 64.
the ñanges, a cooperating substantially Hat blade detach-v
As can be seen from FIGS. 1 and 2, the crotches. of-`
ably insertable on said fel-rule,` the rear outline of the.
the central and side recesses of the blade are semicircu
low> recess on each side` of- the central recess, with the
rearwardv longitudinal projection of their crotches. The
crotches of the central andv side recesses matching the.
front. surfaces of the leading-and trailing locating lugs are
al'so‘sernicircular, and match» the crotches of the central 40 front configuration ofv the. leading and trailing locating
lugs- respectively for. abutting1 thesame and> with portions»
and side recesses respectively both in configuration and'
of4 the blade between the central andz side recesses fitting,
irl-relative location.
within: said longitudinal.- channels; said portions. of. the
The blade 10 may be inserted onto the ferrule 12 toa>
blade located between the. central and siderecesseshaving;
position where the leading locating'y lug abuts the crotch
off the` central recess 60fwith portions 70, 72 ofthe margin 45 notches therein. which; register with the openings through'l
the-hangen, and., locking means engageable. with said por
of the central and side recesses fitting within the longitu-L
dinal channels 42, 44 and with the crotch of each side
recess abutting respectively the corresponding trailing
locating lug. The mounted blade is disposed approxi
tions of thev blade located> betweenv the central and side
, recesses. for releaseably locking the blade on the fel-rule,I
theY locking means comprising an open ended snap ring,v
mately in a common plane with the ñanges and locating 50 which lits. intov said slot with its: opposite ends extending
through said. openings in the ñanges and registering
lugs so thatl the> combinedv configuration is» that of the
inthe blade.
conventional arrowhead, while at the same time, an ex
t‘remelyf- stable and‘ solid! support ís provided for the blade
References Cited in the tileïof ’ this. patent
on the ferrule.
»The blade 101 may be releasably'locked'în position on 55
ferrule 12 by means of an open ended snap ring 74fwhich~
engages the portions 67, 69 of the blade between the
central and' side recesses. The tirst half- section 16 of
the ferrule has formed in its` body portion 2.0 a laterallyv
'2,864,618'extending slot' openingv 76 which. extends between open 60 2,880,000
Brochu _____________ __ Nov. I5, 1938'v
Stockfleth __________ __ Dec. 17,'
Henkel* ______________ _.. Apr. 8,
Schwenlì‘Y ___________ __ Dec. I6,
Unger ____________ ___... Mar.- 31,
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