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Патент USA US3060626

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Oct. 30, 1962
3,060,612
E. BROWN ETAL
MEANS FOR IMPOSING A PREDETERMINED FORCE BETWEEN ADJACENT MEMBERS
Filed oct. 1s, 1958
2 Sheets-Sheet 1
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OCt- 30, 1962
E, BROWN Erm.
3,060,612
MEANS EoR IMPosING A PREDETERMINED FORCE BETWEEN ADJACENT MEMBERS
Filed Oct. 13, 1958 v
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INVENTOE
EDWARDS BROWN.:
WILLIAM S. WOODWARD
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FR nERlcK D.
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Patented Oct. 30, 1962
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for predetermining an initial stress between the stock
and the barrel in which a stress or force adjustment must
3,060,612
MEANS FOR IMPGSFNG A PREDETERMINED
FORCE BETWEEN ADJACENT MEMBERS
Edwards Brown, 3433 N. 47th Way, ‘and Wiiliam S. Wood
ward, 6742 N. 48th St., both of Phoenix, Ariz., and
Frederick D. Wade, 7014 E. Cypress, Scottsdale, Ariz.
Filed Oct. 13, 1958, Ser. No. ‘767,033
11 Claims. (Cl. 42-75)
This invention relates to a means and method `for 10
imposing a predetermined force between adjacent mem
bers and more particularly to a means and method for
be made.
Accordingly, it is an object of the present invention
to provide a means and method for imposing a predeter
mined stress between adjacent members whereby the fore
arm of a rifle stock may be stressed relative to the rille
barrel precisely regardless of various changes in the rifle
stock relative to the barrel.
Another object of the invention is to provide a means
which may be adjusted precisely to indicate an initial
stress imposed between a rifle stock forearm and a barrel
imposing a predetermined stress between the forearm and
whereby further adjustments may be made incrementally
barrel of a rifle.
to attain an accurate shooting condition of the riñe and
~
It is well known that the engaged or stressed relation
ship of a rifle barrel and forearm greatly affects accuracy
of the rifle or its ability to deliver a plurality of pro
whereby this accurate shooting condition may be dupli
cated at any future time regardless of changes which may
occur in the rifle stock during the interim.
Another object of the invention is to provide a means
jectiles into a small group.
for indicating precisely a preliminary stressed condition
Bolt action and other rifles are normally provided with
a barrel which is supported in a cantilever fashion from 20 or position of the rifle stock forearm relative to an adja
cent barrel whereby an index is provided for a further
the action of the rifle and the forearm of a stock of such
precision adjustment of the stress condition between
bolt action riiles is usually also cantilevered forward of
the riñe stock forearm and the barrel.
the rifle action. It is well known that rifle stock fore
Another object of the invention is to provide means
arms are subject to warpage due to changes in the Weather
or due to seasoning which occurs after the stock is ñnished 25 for adjusting the stress or force between a ride stock
and barrel wherein a screw threaded adjusting means is
and becomes a part of the rifle. Changes which Voccur
disposed to deflect a spring which imposes stress or force
between the forearm of the rifle stock and the barrel
until the spring is deñected to a predetermined degree
Many stock makers and gunbuilders have continually 30 which indicates a predetermined stress or degree where
in a rifle stock effect changes in accuracy and also change
the point of impact at which bullets strike a target with
a given sight setting and holding of the riiie.
Y
faced the problems of fitting a stock forearm properly
to a given rifle in order to obtain accuracy with various
loads which may include several different bullet weights
upon the screw threaded means may then be further
adjusted in precise increments to a'given stressed rela
tionship between the stock forearm and the barrel.
A further object of the invention is to provide a means
35 for adjusting the stressed relationship of a rifle stock and
sultant pressure intensities within the rifle barrel.
barrel wherein either visual or audible means is provided
Normally a riñe stock which engages the barrel some
to indicate an index position or stressed relation between
distance from its cantilever support may shoot well with
said forearm and barrel.
one load and may not shoot accurately with other loads.
Another object of the invention is to provide a means,
lt is oftentimes notable that a rifle will not shoot maximum
loads properly nor will it accurately handle certain 40 for establishing a predetermined stress or force between
the forearm of the rifle stock and a rifle barrel, which is
desired loads which a riñeman wishes tó shoot. Such
very compact and which neatly tits into the forearm of
desirable loads may produce conditions of vibration and
a conventional riñe stock below the barrel and without
barrel action in relation to the stock which are not com
alteration to the external contours or shape of the riile
patible with accurate grouping.
It is known that the bearing of the stock forearm on 45 stock forearm.
Another object of the invention is to provide a means
the barrel has a particular effect on barrel vibration and
and sizes together with varying powder charges and re
possibly the damping of certain barrel movements which
to impose a predetermined stress or force between a riñe
stock forearm and barrel which is adjustable laterally and
are imposed by the passage of a bullet through the barrel
vertically and which maybe locked in such position
and the effects of gas pressures propelling the bullet.
It has been established that varying stresses imposed 50 precisely to maintain an adjusted relationship between
the riile stock forearm and the rifle barrel.
between the riile stock forearm and the barrel may be
A further object of the invention is to provide a method '
purposely imposed in order to adjust the stressed rela
for imposing -a predetermined stress or force between
tionship of the stock and the barrel to be compatible
with various loads shot in the rifle. Dif?culty has been 55 adjacent members whereby an initial stress or index
force may be imposed between two members by deflec
encountered in predetermining such stressed relationships
tion of a resilient means which precisely indicates such
between the stock forearm and the barrel and later adjust-l
index stress or force whereupon further incremental
ing precisely to such stressed relationships so that the
adjustments may be made to further stress the adjacent
members relative to each other, thereby permitting pre
which may occur in the stressed relationship between 60 cise stressing of the adjacent members relative to each
other even though their spaced relationship or relative
the stock and the barrel as hereinbefore discussed. These
position to each other may change from time to time.
changes being the result of weather conditions which may
Further objects and advantages of the invention may
cause warpage or further seasoning of the rifle stock.
be apparent from the following specification, appended
For example, the forearm of the rifle stock may warp
65 claims and accompanying drawings in which:
laterally or vertically or may warp in both directions.
FIG. 1 is an enlarged fragmentary sectional view
Such changes in the forearm have always created a serious
longitudinally of a rifle fore end structure and showing
problem in the adjustment of forearm stresses which are
means according to the present invention in section and
normally known as forearm tension since it is necessary
to maintain precise forearm tension for a given rifle load. 70 disposed to exert or maintain a predetermined stressed
relationship between the cantilever elements of the riñe
The engaged or stressed relation of the stock with the
barrel and the rifle stock.
barrel requires lalmost universal adjustment and means
rifle may be rendered compatible with a given desired
load. .This ditliculty is encountered because of changes
3,060,612
3
FIG. 2 is a transverse sectional view taken from the
line 2-2 of FIG. l.
FIG. 3 is a top or plan view of the upper or movable
member of the means shown in FIG. 1 of the drawings.
FIG. 4 is a fragmentary sectional View taken from the
line 4-4 of FIG. l of the drawings.
FIG. 5 is a top or plan view of the lower or stationary
member of the means shown in FIG. l of the drawings.
FIG. 6 is a fragmentary longitudinal sectional View of
a riñe fore end structure showing a modification of the 10
4
justable plate has become aligned with the barrel in its
normal lateral position relative to the stock.
As shown in FIG. 4 of the drawings the adjustable
plate 36 is provided with a laterally elongated opening
56 which permits lateral movement of the adjustable
plate 36 with relation to the clamping screw 46 thereby
permitting lateral movement of the fingers 38 and 40
with respect to the forearm 22 of the rifle stock.
The forward end of the base plate is provided with an
opening 58 in which an adjustment nut 60 is rotatably
present invention therein and showing parts and portions
mounted. This adjustment nut is provided with a notched
of the means in section and elevations to amplify the illus
detent flange 62 on its normally upper end. This ñange
tration.
62 is enlarged and provides an axial abutment for the nut
FIG. 7 is a fragmentary View taken from the line 7-7
60 at the upper side of the base plate 28. A snap ring
of FIG. 6 showing the adjustment dial of the present 15 64 is disposed in an external groove in the nut 60 adjacent
invention.
the lower side of the plate 2.8 thereby fixing the nut 60
FIG. 8 is a transverse sectional view taken from the
longitudinally of its axis relative to the plate 22 so that
line 8-8 of FIG. 6.
the nut 60 may rotate but is retained axially with respect
FIG. 9 is a fragmentary longitudinal sectional view of
to the plate 28. The nut 60 is provided with an internally
a riile stock yforearm in adjacent relationship with a rifle 20 screw threaded bore in which an externally screw threaded
barrel and showing a longitudinal sectional view of a
adjustment screw 66 is threadably engaged. This screw
further modified means according to the preset inven
at its normally upper end is fixed to a platform plate 68
tion.
which engages the lower side of the adjustable plate 36
FIG. 10 is a transverse sectional view taken from the
below the fingers 38 and 40. The platform plate is pro
line 10-10 of FIG. 9.
vided with a linger portion 69 which extends downwardly
FIG. l1 is a fragmentary longitudinal sectional view of
through an opening 70 in the base plate 28. This iinger
a rifle stock forearm and a barrel adjacent thereto and
69 in the opennig 70 prevents rotation of the platform
showing a longitudinal sectional view of a further modi
member 68 when the internally screw threaded nut 6i)
iied means of the invention.
is rotated to screw threadably project and adjust the screw
FIG. 12 is a transverse sectional view taken from the 30 66 axially thereof and thereby adjust the adjustable plate
line 12-12 of FIG. ll.
36 relative to the base plate 28. It will be noted that
FIG. 13 is a fragmentary sectional View taken from the
the adjustable plate 36 is a resilient plate which is capable
line 13-13 of FIG. ll; and
of being deflected upwardly when the screw 66 and plat
FIG. 14 is a fragmentary sectional view taken from the
form 68 are projected upwardly from the base plate 28 by
line 14-14 of FIG. 6.
35 rotational adjustment of the nut 66.
As shown in FIG. l of the drawings the present inven
A screw 72 is threaded into the base plate 28 and
tion is installed to cooperate with a rifle barrel 20 and a
iixes one end 74 of a detent spring 76 to the base plate
rifle stock forearm 22 which are supported in cantilever
28. A pin 78 engages the detent spring 76 thereby sup
fashion from a conventional action which may be of any
porting the spring so that a curved detent portion 80 at
configuration or structure, however, the present invention 4.0 one end thereof is maintained iirmly in engagement with
most commonly applies to conventional bolt action rifles.
any one of several detent notches 82 in the periphery of
The rifle barrel 20 is normally bedded in a groove por
the ñange 62 which is integral with the nut 60. The
tion 24 of the stock forearm and the means of the present
detent spring 76 in engagement with any one of the detent
invention is located in a recess 26 within the riñe forearm
recesses 82 operates to maintain the nut 60 in precisely
22 directly below the barrel 20. The means of the present 45 adjusted position and provides for incremental click ad
invention is referred to herein as a bedding device and
justment of the nut 60 in order precisely to project the
this bedding device is provided with a base plate 28 which
screw 66 and platform 68 axially of the nut 60 and rela
rests in a bottom 30 of the recess 26 in the stock forearm.
tive to the plate 28.
Projecting through openings in the base plate 28 are wood
Fixed to the upper side of the adjustable plate 36 by
screws 32 and 34 which extend into the wood of the stock 50 means of a screw 84 is a spring 86 which extends between
forearm 22 and secure said base plate 28 in the bottom
the lingers 38 and 40 and this spring is provided with an
30 of the recess 26.
extending end 88 which engages the lower surface of
Supported on the upper side of the base plate 28 is
the rifle barrel 20. The spring 86 is utilized to impose
an adjustable plate 36 having upwardly projecting spaced
`a preliminary or index stress between the rifle stock fore
fingers 38 and 40 which engage the barrel 20 as shown 55 arm 22 and the 'barrel 20 and this spring when deflected
best in FIG. 2 of the drawings. These lingers 38 and 40
to a certain degree provides an audible signal to indicate
are disposed in spaced relationship to each other so that
a preliminary or index stress between .the riiie stock fore
they form a cradle for the barrel 20 and support it pre
arm and the barrel so that further incremental adjust
cisely with relation to the forearm 22. The normally
ments of such stress may be made by adjustment of
rear end of the adjustable plate 36 is provided with a 60 the screw 60 as will be hereinafter described. The
conical opening 42 which is engaged by a conical pin
`audible signal which is provided by the spring 86 at a
44 secured to the base plate and extending upwardly
given deñection thereof is caused by la dimpled portion
therefrom. The adjustable plate 36 is thus pivotally
90 of the spring which has a reversible snap action when
mounted with respect to the base plate 28. A clamping
the spring 86 is deiiected. This dimple 90 is substan
screw 46 extends through the base plate 28 and the ad
tially circular and is quite shallow. As shown by dash
justable plate 36 and is screw threaded in the clamping 65 lines A the spring when deflected toward the plane of
nut 48 which rests on the upper Side of the adjustable
the adjustable plate 36 causes a reversal of the dimple 90
plate 36. The screw 46 is provided with an enlarged
so that it presents a convex surface at the side which is
head 50 disposed in a bushing 52 which is substantially
normally concave. When the spring 86 is thus deiiected
flush with the lower surface 54 of the stock forearm. The 70 and the concavity of the dimple '90 reverses itself it pro
bushing 52 is stationary and provides a clamping support
vides a deiinite audible snapping sound and thus precisely
for the head 50 of the screw 46 so that this screw may
be tightened screw threadably with relation to the nut
48 in order to clamp the adjustable plate 36 securely in
stationary position against the base plate when the ad 75
indicates a predetermined deilection or index stress of the
spring 86 and a corresponding stress or pressure between
the forearm 22 of the riiie stock and the barrel 20.
In operation the `bedding device of the present inven
3,060, 612
5
tion compensates for changes in the position of the stock
action of the dimple 90 are counted and these clicks as
forearm 42 relative to the barrel 20.
Itis known that some stock woods warp or change due
it may warp vertically. In some instances there isa com
hereinbefore described are precise clicks occasioned by
incremental adjustment of the nut 60 which causes the
detent recesses 82 to be successively engaged by the curved
detent portion 861 of the spring 76.
It will be appreciated by those skilled in the art that
initial deflection of the spring 86 to a predetermined dis
bination of vertical and lateral warpage of the stock fore
tance or stress, which causes snap action of the dimple,
to continued seasoning of the wood long after the stock
has been installed in connection with the rifle action and
barrel. Sometimes the forearm may warp laterally or
will always be the same regardless of the `spaced rela
a period of time and causes considerable difficulty in the 10 tionship of the forearm 22 relative to the barrel 20.
Additionally a given number of clicks indicate a certain
maintenance of accuracy of a rifle on which the stock
precise adjustment of the nut 60 and attendant additional
forearm engages the barrel. As shown in FIG. 2 of the
forearm tension applied relative to the barrel 28. Thus,
drawings the groove 23 in the forearm has slight clearance
the riileman after once having adjusted forearm tension
relative to the barrel so that changes in the stock forearm
will not cause it to engage the barrel 20 whereby the ñngers 15 to reach an optimum shooting condition with a given
load subsequently may precisely adjust the forearm ten
3S and 40 are the only supports for the riile stock forearm
sion to the optimum condition to match the desired load
relative to the barrel. When the position ofthe stock fore
even though a considerable interim change may have
arm 22 changes laterally or vertically with respect to the
occurred in the relative position or normal stress of the
barrel the bedding device of the invention may be adjusted
precisely to engage the 'fingers 38 and 40 with the barrel 20 forearm 22 relative to the barrel Ztl. It is quite usual that
a hunting rifle or target rifle may be utilized with a given
and thereby compensate for such changes of the stock
load during one season and may not be used with the
forearm. Equilibrium of the barrel and forearm is
same load again for several months. During the interim
thus established on one plane laterally of the barrel axis.
the stock forearm may change, as hereinbefore pointed
Initial adjustment of the bedding device of the present
device is accomplished as follows. The screw 46 and 25 out, and it will be appreciated by those skilled in the art
arm relative to the barrel. This condition may occur over
that the bedding device of the present invention will per
mit the riileman to attain the identical vertically stressed
relationship between the forearm 22 and the barrel 20 as
was previously found to be optimum.
It will be further appreciated that the lateral adjusta
is then rotated in a direction to project the screw 66 and 30
clamping nut 448 are set in a loose condition so that the
adjustable plate 36 is freely pivotal on the conical pin 44
thereby permitting the adjustable plate 36 to move lateral
ly of the plate 28 with absolute freedom. The nut 60
elevate the platform 68 together with the adjustable plate
bility of the adjustable plate 36 readily compensates for
36 so that the spring 86 is deflected beyond a snapping
any lateral Warpage or change of the stock 22 relative
to the barrel 26 so that only vertical tension or stress
stress of the dimple ‘90 thereby firmly engaging the
is applied between the stock forearm 22 and the barrel.
fingers 38 and 40 with the barrel to accomplish a proper
and precise cradling condition of the barrel 20 between 35 Further, when the lateralalignment of the fingers 38 and
4d is established to cradle the barrel 20 the adjustable
the fingers 38 and 40. This causes lateral pivotal move
plate 36 is fixed laterally relative to the plate 28 and
ment of the adjustable plate 36 into alignment with the
forearm 22 by means of the clamp screws 46 and nut 48.
barrel whereupon subsequent tightening of the screw 46
It will be apparent that the bedding device of the
clamps the adjustable plate 36 precisely with respect to
the lateral disposition of the barrel 20 in the forearm 22. 40 present invention which is specifically disclosed in con
nection with riñe stock forearms and riñe barrels may
Then the plate 36 is clamped securely to the base plate
be used for other purposes and mainly for the purpose of
28 and the lateral adjustment is thus fixed. This relieves
imposing a predetermined stress between adjacent mem
all lateral stresses between the forearm and the rifle bar
bers the spaced or stressed relation of which may vary
rel. The nut 60 is then screw threadably adjusted in the
from time to time.
opposite direction so that the platform 68 is retracted
Accordingly, the device of the present invention is
toward the base plate 28 permitting relaxation of the
also utilized in connection with a method of the inven
spring 86 so that the dimple 90 again reverses itself to
tion which covers the operation of imposing- a prede
the solid line position as shown in FIG. 1 of the draw
termined stress between adjacent members. The method
ings. The nut 60 is then adjusted to project the screw
66 and platform 68 toward the barrel 20. This adjust 50 comprises the following steps.
First, lateral equilibrium is established in one plane
ment is done incrementally according to the clicking ac
between the adjacent members, as for example, a rifle
tion of the end 80 of the detent spring '76 in the detent
barrel and forearm. As an example,- this lateral equi
notches 82 in the ñange 62 of the nut 60. When the nut
has been adjusted sufficiently to deflect the spring 86 the
dimple 90 snaps into reverse or dash line position A
providing an audible signal which indicates a prede
termined stress or force between the forearm 22 and the
librium is established by lateral adjustment of the cradle
fingers 38 and 40, yshown in FIG. 1 of the drawings, and
subsequent ñxing of the screw 46. Then a deilectable
spring is stressed between two adjacent members until
the spring deflects to a precise index position on a pre
barrel 20. This predetermined stress or force is imposed
determined amount and exerts a corresponding index stress
by the end y88 of the spring 86 and thereby indicates a
preliminary or index adjustment of the forearm 22 rela a O between the adjacent members whereupon additional
stress is applied incrementally between the adjacent mem
tive to the barrel 20. The rifleman may then increase
bers until an optimum vibratory performance or stress
the adjustment of the forearm tension by incrementally
adjusting the nut 60 in the same direction to further move
the platform 68 toward the barrel 20 and cause addi
tional stress or force to be applied to the barrel 20 by en
gagement of the fingers 38 and 40 therewith. The rifle
man may then shoot successive groups at a target where
upon dispersion of each successive group may be studied.
With each successive group incremental adjustments of the
nut 160 may be made to provide additional forearm ten
sion or force relative to the barrel 20 until an optimum
accuracy condition is attained whereupon the riñeman
will note the number of adjustment clicks made follow
ing the snap action of the `dimple 90. The number of
of one of the members is attained.
As shown in FIGS. 6, 7 and 8 of the drawings the in
vention comprises a modification wherein a base plate
92 is secured in the recess 26 o-f the stock forearm 22 by
a screw 94.
An adjustable plate 96 is slidably adjustable laterally
of the plate 92 and may be ñxed lrelative thereto by a
clamping screw 98 and a clamp nut 100 screw threadably
engaged therewith. One end of the adjustable plate 96
is bifurcated and the bifurcated portions 102 straddle the
clamp screw 98. These bifurcated portions 102 are hook
shaped and engage a hook shaped portion 104 of the base
.clicks madeafter the audible signal provided by the snap 75 plate 92. This engagement permits lateral adjdstment of
3,060,612
8
the adjustable plate 96 relative to the base plate 92 but
provides for the location of the adjustable plate 96 longi
tudinally of the base plate 92. As shown in FIG. 14 the
bifurcated portions 102 of the adjustable plate 96 are suf
ficiently spaced to permit lateral adjustment of the plate
96 relative to the clamp screw 98.
Pivoted -to the forward end of the adjustable plate 96
by means of a pin 106 is a barrel band 188 which sur
rounds the barrel 20.
Screw threaded in the base plate 92 below the pin 106
is `an adjusting screw 110 having a spring loaded plunger
the adjusting screw 110 shown in FIG. 6 of the drawings.
A plunger 112 similar to that shown in FIG. 6 of the
drawings is actuated by the screw 146 and this plunger
112 is provided with a spring similar to the spring 118
shown in FIG. 6 of the drawings. The upper end of the
plunger 112 as shown in FIG. 9 of the drawings is fiat to
conform with a fiat surface 148 at the lower side of the
block 128. The plunger 112 shown in FIG. 9 of the draw
ings is provided with a finger 150 which extends through
an opening 152 in the bottom of the frame 125. The fin
ger 150 is similar to the finger 69 disclosed in FIG. l of
112 therein. The spring loaded plunger 112 is mounted
the drawings and prevents rotation of the plunger 112
in a bore 114 of the screw 10 and the plunger is provided
with an enlarged head at its normally upper end which
abuts the end of the screw 110 outwardly of the bore 114.
The plunger is provided with a reduced diameter shank
116 which is surrounded by a spring 118 which tends to
when the screw 146 is rotated in a screw threaded rela
project the head of the plunger into engagement with
the adjustable plate 96. The shank 116 of the plunger
112 is provided with a fiat end 120 which is liush with the
normally lower end of the screw 110 when the enlarged
head of the plunger is engaged with the normally upper
end of the screw 110. This arrangement of the plunger
112 and the spring 11-8 provides a means by which a pre
liminary or index stress may be observed visually or by
touch rather than ‘audibly as hereinbefore described. In
operation the screw 110 is initially adjusted away from
the movable plate 96 by a Spanner wrench which is en
gaged in openings 122 in the outer end of the screw 110.
The clamp screw 98 is loosened to permit lateral align
ment of the barrel and the adjustable plate 96 relative
to the base plate 92. The clamp screw 98 may then be
tionship with the lower portion of the frame 125.
A plunger 154 is slidably mounted in the rear end of
the frame 125 `and engages the rear end of the block 128
to clamp it into fixed position in the recess 126 of the
frame 125 as will be hereinafter described. The outer
end of the plunger 154 is engaged by a lever 156 pivoted
in the frame 125 on a pin 158. The lever 156 is engaged
by a clamp screw 160 which is screw threaded in the
frame 125. When the screw 160 is tightened it pivots
the lever on the pin 158 thereby projecting the plunger
154 into firm engagement with the rear end of the block
128 for clamping the block 128 securely against the inner
front side of the recess 126 in the frame 125.
In operation the modified structure as shown in FIGS.
9 and 10 operates substantially as follows. The clamp
screw 160 is loosened to permit lateral freedom of the
block 128 so that the fingers 130 and 134 may freely
align themselves to cradle the barrel 20 without lateral
stress relative to the stock forearm 22. The screw 146
tightened to fix the adjustable plate 96 laterally relative
may -be adjusted in a similar manner to the hereinbefore
described screw 110 until the spring 118 is stressed suñi
to the »base plate 92. The screw 116 may then be screwed
threadably adjusted inwardly toward the adjustable plate 35 ciently to provide an index stress or force between the
forearm 22 and the barrel 20. This being indicated by
96 whereby the spring 118 is stressed under a compres
the end 120 of the plunger 112 becoming flush with the
end of the screw 146. During rotational adjustment of
the lscrew 146 the plunger 112 is prevented from turning
becomes flush with the normally lower end of the screw
40
by the finger 150 projecting through the opening 152.
110 a predetermined force or index stress exists in the
When the index stress of the spring 118 is indicated by
spring 118 and between the forearm 22 and the barrel 20.
the flush relationship or position of the end 120 of the
Further incremental adjustment of the screw 110 may be
plunger 112 with respect to the end of the screw 146, fur
made to arrive at a desired tension or stress of the fore
ther incremental adjustments of the screw 146 may be
larm 22 relative to the barrel in a similar fashion as here
made to impose a desired stress between the forearm 22
inbefore described in connection with the structure dis
and the barrel 20 `and the incremental adjustments may be
closed in FIGS. 1 to 4 of the drawings.
made in accordance with calibrations 124 as shown in
In the structure shown in FIGS. 6 and 8 of the draw
FIG. 7 which are applied to the bottom of the plate 144
ings the additional incremental adjustments are made
shown in FIG. 9 of the drawings. When the desired stress
according to calibrations 124 on a bushing 126 surround
ing the screw 10. Thus, the spring 118 when deflected D relationship has been established the clamp screw 160 is
tightened thereby ‘axially moving the plunger 154 by
suf‘n‘ciently to permit the end 120 of the plunger to be
means of the lever 156 whereupon the plunger 154 jams
come ñush with the end of the Screw 110 provides for
the block 128 yagainst the forward wall of the recess 126
an initial index stress between the forearm 22 and the
thereby fixing it precisely with respect to the box shaped
barrel 20 so that further incremental adjustments may be
made to reach an optimum forearm tension relative to 55 frame 125.
the barrel.
It will be seen that the modified structure, disclosed
in FIGS. 9 and 10 of the drawings, operates basically to
In the modification as shown in FIGS. 9 and 10 of the
provide -for lateral alignment of the cradle fingers 130 and
drawings the bedding device of the invention is provided
134 with the barrel to acccommodate any lateral dis
with a box shaped frame 125 which is disposed in the
crepancy between the forearm and the barrel 20. Where
recess 26 of the forearm 22. This box shaped frame is
upon an initial or index stress is set up by the spring 118
provided with a rectangular recess 126 having a bedding
and indicated by a position of the end 120 of the plunger
block 128 movably mounted therein. The bedding block
sion load which is imposed between the forearm 22 and
the barrel 20. When the end 120l of the plunger 112
128 is provided with upwardly diverging fingers 130 and
112; and thereafter further incremental adjustments of
forearm tension may be made to an optimum condition
fingers 38 and 40 hereinbefore described.
65 which corresponds with the most accurate condition of a
At its forward end, the block 128 is provided with a
respective rifle for a given load as hereinbefore described
vertical slot 136 into which a screw 138 projects to re
in connection with the operation of the structure dis
tain the block 128 in the frame 12'5. 'Ihe slot 136 is of
closed in FIGS. 1 to 5 of the drawings.
considerably greater length and breadth than the diam
In the modified structure as shown in FIG. 1l, l2 and
eter of the screw 138 permitting vertical and lateral free 70 13 of the drawings, the bedding device includes a base
dom of the block 128 in the recess of the frame 125. The
plate 162 fixed by means of screws 164 and 166 in the
frame 125 is secured to the forearm 22 by screws 140
recess 26 of the forearm 22. Pivotally connected to
and 142 which project through a bottom plate 144.
the base plate 162 by means of a pin 168 is an adjustable
Screw threaded in the bottom of the frame is a stress
plate 170. A clampp screw 172 and screw threaded nut
134 which serve as a cradle in a similar fashion to the
adjusting screw 146 which is similar in construction to 75 174 are disposed to clamp the adjustable plate 170 to
3,060,612
the base plate 162 and íix lateral pivotal adjustment of
plate 170 about a pin 168.
The forward end of the adjustable plate 140 is provided
with a pivoted cradle member 176. This cradle member
is pivotally connected to the adjustable plate 170 by
means of a normally horizontal pin 178.
The cradle
member 176 is provided with a pair of upwardly pro
jecting spaced linger portions 180 and 182 in which the
barrel 20 is cradled. The cradle member 176 is provided
with a forwardly projecting portion 184 having a curved
surface 186 at its lower side which is engaged by a plunger
112. similar to that shown in FIG. 6 of the drawings. A
1@
when deflected by adjustment of said screw threaded
means to force said cradle portion against said barrel, said
snap action spring secured to said second member and en
gageable with said barrel whereby adjustment of said sec
ond member toward said barrel by said screw threaded
means causes deflection of said snap action spring and
causes the dimple thereof to snap into reverse position
thereby emitting a snapping sound.
3. In a means for imposing force between a riñe stock
forearm and barrel the combination of: a rifle stock fore
arm; a barrel adjacent thereto; a first member secured to
said forearm; a second member movably mounted adja
stress adjusting screw 110 similar to that disclosed in
FIG. 6 of the drawings is also utilized and is screw
cent to said first member; screw threaded means supported
structure of riñe stocks and barrels but may be used to
means causes deflection of said snap action spring and
causes the `dimple thereof to snap into reverse position
by said first member and screw threadably adjustable to
threaded in the base plate 162. The plunger 112 and 15 move said second member toward said barrel, said second
member having a cradle portion engageable with said
screw 110 shown in FIG. 1l operate in the same fashion
as that shown in FIG. 6 of the drawings and a bushing
barrel, said second member movable laterally of said barrel
126 similar to the bushing 126 in FIG. 6 of the drawings
permitting alignment of said cradle therewith; means for
fixing said second member in a position relative to said
operates to carry calibrations which are used to deter-mine
incremental adjustments of the screw 110.
20 first member after said cradle portion is aligned laterally
Lateral adjustment of the adjustable plate 170 with
with said barrel and second means cooperable with and
responsive to said screw threaded means disposed to indi
respect to the screw 172 is permitted by an elongated
cate a predetermined force imposed by said second mem
slot 18S in the adjustable plate 170 through which the
ber against said barrel by adjustment of saidV screw
screw 172 extends.
It will be obvious to those skilled in the art that the 25 threaded means, said second means comprising a dimpled
snap action spring disposed to provide an audible signal
snap spring 86, shown in FIG. 1 may be substituted for
when deiiected by adjustment of said screw threaded
the visual indicator mechanism comprising the screw 110,
plunger 112. and spring 118.
means to force said cradle portion against said barrel, said
snap action spring secured to said second member and
It will be obvious to those skilled in the art that the
means and method of the present invention has been dis 30 engageable with said barrel whereby adjustment of said
second member toward said barrel by said screw threaded
closed specifically for use in connection with the fore end
impose a predetermined stress between other adjacent
members if desired and that various modifications of the
present invention may be resorted to in a manner limited
thereby emitting a snapping sound, said screw threaded
means having a hollow cylindrical internally screw
only by a just interpretation of the following claims.
threaded member rotatably mounted in said first member
and a second externally screw threaded member screw
We claim:
threadably cooperable with the internally screw `threaded
1. 'In a means for imposing force between a rifle stock
member and disposed to bear against said second member;
forearm and barrel the combination of: a riñe stock fore
arm; a barrel adjacent thereto; a first member secured to 40 and means connected with said externally screw threaded
member disposed to prevent rotation thereof.
said forearm; a second member movably mounted adjacent
4. In a means for imposing force between a rifle stock
to said first member; screw threaded means supported by
yforearm and barrel the combination of: a rifle stock fore-V
said first member and screw threadably adjustable to move
arm; a barrel adjacent thereto; a first member secured to
said second member toward said barrel, said second mem
ber having a cradle portion engageable with said barrel, 45 said forearm; a second member movably mounted adjacent
to said first member; screw threaded means supported by
said second member movable laterally of said barrel per
said first member and screw threadably adjustable to move
mitting alignment of said cradle therewith; means for
said second member toward said barrel, said second
fixing said second member in a position relative to said
member having a cradle portion engageable with said
first member after said cradle portion is aligned laterally
with said barrel and second means cooperable with and 50 barrel, said second member movable laterally of said
barrel permitting alignment of said cradle therewith;
responsive to said screw threaded means disposed to indi
means for fixing said second member in a position rela
cate a predetermined force imposed by said second mem
tive to said first member after said cradle portion is
ber against said barrel by adjustment of said screw
aligned laterally with said barrel and second means co~
threaded means, said second means comprising a dimpled
snap action spring disposed to provide an audible signal 55 operable with and responsive to said screw threaded
means disposed to indicate a predetermined force im
when deiiected by adjustment of said screw threaded
posed by said second member against said barrel by ad
means to force said cradle portion against said barrel.
justment of said screw threaded means, said second means
2. In a means for imposing force between a rifle stock
comprising a `dimpled snap action spring disposed to
forearm and barrel the Combination of: a riñe stock fore
arm; a barrel adjacent thereto; a iirst member secured to 60 provide an audible signal when deflected by adjustment of
said screw threaded means to force said cradle portion
said forearm; a second member movably mounted adjacent
against said barrel, said snap action spring secured to
to said first member; screw threaded means supported by
said second member and engageable with said barrel `
said lirst member and screw threadably adjustable to move
whereby adjustment of said second member toward said
said second member toward said barrel, said second mem
ber having a cradle portion engageable with said barrel, 65 barrel by said screw threaded means causes deñection of
said snap action spring and causes the dimple thereof
said second member movable laterally of said barrel per
to snap into reverse position thereby emitting a snapping
mitting alignment of said cradle therewith; means for
sound, said screw threaded means having a hollow cylin
fixing said second member in a position relative to said
drical internally screw threaded member rotatably
first member after said cradle portion is aligned laterally
with said barrel and second means cooperable with and 70 mounted in said iirst member and a second externally
screw threaded member screw threadably cooperable
responsive to said screw threaded means disposed to indi
with the internally screw threaded member and disposed
Cate a predetermined force imposed by said second mem
ber against said barrel by adjustment of said screw
to bear against said second member; and means connected
with said externally screw threaded member disposed to
threaded means, said second means comprising a dimpled
snap action spring disposed to provide an audible signal 75 prevent rotation thereof, said hollow cylindrical screw
3,060,612
12
1i -
threaded member having a flange provided with notches
first member; a lever pivotally mounted on said first mem
therein and a spring detent mounted on said first member
and engageable with said notches to provide for incre
mental click adjustments of said screw threaded means.
5. In a means for imposing a predetermined force
between adjacent members the combination of: a riiie
stock forearm; a barrel adjacent thereto; a first member
fixed in said forearm; a second member movably mounted
relative to said first member and engageable with said
barrel; a hollow cylindrical member having external lO
ber and engageable with said screw threaded member
and a plunger extending through the box shaped structure
of said first member and engaging said lever at one end
and disposed to exert force at its opposite end on said
screw threads screw threaded in said first member and
axially threadably adjustable toward and away from
said barrel; a plunger axially slidably mounted in said
second member to thereby jam it in the box'shaped struc
ture of said first member.
8. In a means for imposing a predetermined force be
tween adjacent members the combination of: a barrel; a
riñe stock forearm; a first member supported therein;
a second member laterally movable with respect to said
first member; a cradle member pivotally mounted on said
second member and having diverging fingers engage
screw threaded member; a spring tending to force said
plunger toward said barrel relative to said screw threaded
member, said plunger having a portion movable with re
able with said barrel; and screw threaded means screw
lation to said screw threaded member which indicates a
ative to said second member and toward said barrel.
threadably adjustable in said first member and engage
able with said cradle member for pivotally moving it rel
9. In a means for imposing a predetermined force be
predetermined deiiection of said spring and a correspond
tween adjacent members the combination of: a barrel;
ing predetermined force which may be imposed by en
gagement of said plunger with said second member.
20 a rifle stock forearm; a first member supported therein;
6. In a means for imposing a predetermined force be
tween adjacent members the combination of: a riñe stock
forearm; a barrel adjacent thereto; a first member fixed
in said forearm; a second member movably mounted
relative to said first member and engageable with said
Ibarrel; a hollow cylindrical member having external
screw threads screw threaded in said first member and
axially threadably adjustable toward and away from said
barrel; a plunger axially slidably mounted in said screw
threaded member; a spring tending to force said plunger
toward said barrel relative to said screw threaded member,
said plunger having a portion movable with relation to
said screw threaded member which indicates a predeter
mined deflection of said spring and a corresponding pre
a second member laterally movable with respect to said
first member; a cradle member pivotally mounted on
said second member and having diverging fingers en
gageable with said barrel; and screw threaded means
screw threadably adjustable in said first member and
engageable with said cradle member for pivotally moving
it relative to said second member and toward said barrel,
said second member pivotally connected with said first
member intermediate its ends and means disposed to fix
said second member in stationary position relative to
said first member to maintain the lateral disposition of
said cradle and barrel with relation to said forearm.
10. In a device of the class described the combination
of first and second adjacent members; first means adjust
determined force which may be imposed by engagement 35 able relative to said members, said first means supported
of said plunger with said second member, said first mem
by one of said members; resilient means disposed to be
ber being a box shaped structure, said second member
defiected by said first means and to impose a force on
movably mounted therein laterally and vertically, said
the other of said members; and indicator means co
second member engaged by said plunger and having di
operable with and responsive to a predetermined deiiec
verging fingers forming a cradle engaged with said barrel.
tion of said resilient means and disposed to indicate a
7. In a means for imposing a predetermined force be
predetermined force imposed on said other member by
tween adjacent members the combination of: a riiie stock
said resilient means.
forearm; a barrel adjacent thereto; a first member fixed
11. In a device of the class described the combination
in said forearm; a second member movably mounted
of first and second adjacent members; first means ad
relative to said first member and engageable with said 45 justable relative to said members, said first means sup
barrel, a hollow cylindrical member having external
ported by one of said members; resilient means disposed
screw threads screw threaded in said first member and
to be defiected by said first means and to impose a force
axially threadably adjustable toward and away from said
on the other of said members; and indicator means co
barrel; a plunger axially slidably mounted in said screw
operable with and responsive to a predetermined force
threaded member; a spring tending to force said plunger 50 imposed on said other member by said resilient means,
toward said barrel relative to said screw threaded member,
said first means comprising screw-threaded members dis
said plunger having a portion movable with relation to
posed to deflect said resilient means and to thereby im
said screw threaded member which indicates a predeter
pose a force between said adjacent members.
mined defiection of said spring and a corresponding pre
References Cited in the file of this patent
determined force which may be imposed by engagement 65
of said plunger with said second member, said first mem
UNITED STATES PATENTS
ber being a box shaped structure, said second member
movably mounted therein laterally and vertically, said
second member engaged by said plunger and having di
verging fingers forming a cradle engaged with said bar 60
2,205,982
2,497,861
Klipsch _____________ __ June 25, 1940
Brown ______________ __ Feb. 21, 1950
2,589,912
Weld ________________ __ Mar. 18, 1952
rel; means for locking said second member in said first
member comprising a screw threaded member in said
2,752,714
2,841,909
Landwehr ____________ __ July 3, 1956
Temple ______________ __ July 8, 1958
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