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Патент USA US3028684

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33-;243.
(‘HQ
2,028,674
April 10, 1962
SR
G. c. LUEBKEMAN
3,028,674
BINOCULAR RIB SIGHT FOR GUNS
Filed May 11, 1959
6' 1+
14
i L/ y);
INVENTOR
‘g c Lueélermzrz
a 1'
FW
United States Patent O??ce
3,028,674
Patented Apr. 10, 1962
1
2
3,028,674
FIG. 9 is a side elevational view of a gun barrel show
ing a further modi?cation of my gun sight.
George C. Luebkeman, 214 Cherokee Ave.,
Cincinnati, Ohio
Filed May 11, 1959, Ser. No. 812,152
15 Claims. (Cl. 33-47)
FIG. 10 is a fragmental, top plan view like FIG. 2
showing another modi?ed form of my gun sight.
sirous of employing binocular vision for Wing shooting
the like, desirous of using binocular vision for wing shoot
ing at moving targets.
With particular reference to FIGS. 1, 2, 3, and 6 the
BINOCULAR RIB SIGHT FOR GUNS
FIG. 11 is a section taken on line 11—-11 of FIG. 10.
Referring now to the drawing, I have illustrated my
invention in connection with a conventional single barrel
shotgun but it will be understood that the invention would
This invention relates to a rib sight for shotguns that
apply to double barrel shotgus and to guns of all gauges
is to be used by hunters, trap shooters, and the like, de 10 and types that are utilized by hunters, trap shooters, or
at moving targets.
Heretofore ribs were mounted upon the barrels of shot
guns, and the like, for the purpose of assisting a shooter
numeral 14 indicates the barrel of a single barrel shotgun
in aligning the gun with a target and the usual bead or 15 provided with a threaded end 15 for connecting it to a
beads were positioned above the upper surface of these
conventional frame (not shown) that in turn is mounted
conventional ribs. In my co-pending application for
on the usual gun stock (not shown). This barrel has an
Binocular Sight for Firearms ?led May 27, 1957, and
given Serial Number 661,970 in the United States Patent
Office, now Patent No. 2,927,375, there is disclosed a rib
with a longitudinal groove formed centrally in its upper
elongated rib sight 16 mounted upon and extending the
length of the barrel 14 and preferably secured thereto by
soldering or brazing the bottom face of the rib to the
external surface of the barrel. The rib sight is substan
tially square in lateral contour and extends from the
surface, an existing front bead sight being spaced for
wardly of and separate from the rib whereby the rib func
muzzle end 17 of the gun barrel rearwardly to the rear
or breach end edge 18 thereof. As best shown in FIGS.
tions as a gun accessory. It is, therefore, the main object
‘of this invention to provide a rib sight that is economically 25 2 and 6 the rib is located upon the barrel in a position
such that the vertical plane that contains the center axis
and readily ?tted to a particular gun and thereafter be
of the barrel longitudinally bisects the rib body, the rib
comes an integral part of the gun to insure straight and
having a ?at, upper surface 19 disposed in a plane nor
effective shooting for years of dependable service.
mal to said vertical plane of the center axis of the barrel.
It is another object of the invention to provide a rib
sight for shotguns that will present to the aiming eye only 30 According to this form of my invention a U-shaped slot
20 is formed centrally in the upper surface 19 of the rib
of a shooter, employing binocular vision, an eye catching
and has its forward portion extending into the muzzle
and attractive forward sight element whilst means is pro
edge of the rib whilst the rear part of said slot extends
vided for effectively concealing said forward sight element
into the rear end edge of the rib. With reference to
from the non-aiming eye of the shooter.
A further object of the invention is to provide a bin 35 FIG. 9 it will be seen that my modi?ed slot 200 which
corresponds to the U-shaped slot 20 extends from the
ocular sight having the foregoing characteristics which
muzzle end 17 of the gun barrel 14 to a point in the rib
is compact and free of objectionable dirt catching crev
between 16 to 18 inches from said muzzle end, said slot
ices, or the like, so that the sight may be kept clean and
tapering rearwardly from the muzzle of the rib to its ter
bright and effective as a means of accurately aiming a
40 minating point on the rib. As illustrated in FIG. 2 the
shotgun at a moving target.
slots 20 and 200 divide the upper surface 19 of the rib
In its more speci?c aspects the invention consists of
into two laterally spaced, longitudinally extending narrow
a rib sight that has a longitudinal slot formed in its upper
areas 21 and 22 that are located equal distances from
face that may have a tapering depth and be of V, U,
and on each side of the vertical plane containing the axis
square, or a specially shaped cross sectional contour. The
forward end of the slot has mounted therein a solid sight 45 of the barrel.
A lateral V-shaped notch 23 is formed in and across
element which is formed and positioned within the slot
the forward part of the rib near, but spaced rearwardly
in such manner as to receive a maximum of the available
from, the muzzle end 17 of the barrel, said notch having
circumambient light so that it will have an eye attracting
quality which will be immediately apparent to a shooter 50 a forward face 24 inclined upwardly and forwardly in
the rib at approximately 30° with respect to the axis
as his aiming eye is trained along the slot in the rib in the
of the gun barrel and having the same depth dimension
act of aiming the gun for binocular wing shooting. The
as the slot 20 in the rib. With reference to FIG. 3 it
rib sight structure will also effectively conceal said sight
will be noted that the forward end of the slot 20 between
element from the non-aiming eye of the shooter thereby
assuring that the non-aiming eye will not in?uence the 55 the muzzle end and the forward face 24 of notch 23 has
the same con?guration in lateral section as the rest of the
binocular aiming act of the shooter.
slot and a solid front sight element 25 preferably made
Further objects and features of the invention will be
of translucent plastic material is preferably positioned
apparent from the following description taken in connec
within and extends across said portion of the slot. A
tion with the accompanying drawing, in which:
FIG. 1 is a fragmental, side elevational view of a barrel 60 suitable adhesive secures the said element in the slot por-\
tion.
for a single barrel shotgun with my improved rib sight
Another means of mounting the solid sight 25 on the
mounted thereon.
forward end of the slot 20 between the muzzle 17 and
FIG. 2 is a top plan view of the gun sight shown in
the forward face 24 of the notch 23 is illustrated in FIG.
FIG. 1.
FIG. 3 is a section taken on line 3—3 of FIG. 1.
65 4 wherein it will be noted that said slot portion is milled
to a square internal con?guration and a pair of longitu
FIGS. 4 and 5 are sectional views like FIG. 3 showing
dinally extending grooves 26—26 are formed in opposite
modi?ed forms of front sight mounts of my invention.
sides of the squared slot portion near the bottom thereof
FIG. 6 is a section taken on line 6—6 of FIG. 1.
to receive corresponding shoulders 27-27 projecting
FIG. 7 is a fragmental, side elevational view of the
muzzle end portion of a gun barrel showing a modi?ed 70 from the base portion of the sight element 25. With
reference to FIG. 5 there is shown a modi?ed form of
form of my gun sight mount.
mounting means for the sight element 25 which consists
FIG. 8 is a top plan view of the gun sight mount shown
in providing inwardly directed ?anges 28-28 on the
in FIG. 7.
8,028,674
4
upper ends of the rib which overhang the square slot
portion. When the ?anges are forced down upon the
solid sight element 25 they secure the latter in operative
position within the slot. It will be noted with reference
to FIGS. 4 and 5 that the upper face of the sight element
25 is ?at and is located below the plane of the upper sur
or matted surface 202 whilst the longitudinal side areas
21 and 22 on opposite sides of the slot 201 may have
mirror-like polished surfaces. Thus the slot face will
appear to be relatively dark while the areas 21 and 22
will re?ect the general light of the locality whereby the
rib may be more readily aligned with the front sight when
the gun is aimed. The surface treatment of the slot 201
face 19 of the rib but, as clearly indicated at 129 in FIG.
and the areas 21 and 22 just described may be reversed
3, the upper face of the element may be made convex,
with good results whereby the area 21 and 22 may be
or the like, and also made to lie beneath the plane of
the upper surface 19 of the rib 16. It will, therefore, be 10 made non-re?ective by matting or roughening them while
the slot faces may have mirror-like polished surfaces.
understood that the rear face of the sight element lies
It is contemplated that the surface of the slot 20 and
in the plane of the forward face 24 of the notch 23 but
the surfaces of the rib 16 may be provided with a sur
it is contemplated that the sight element body may extend
face coating that is light absorbent and the narrow face
slightly rearwardly of said face 24 whereby the rear face
of the sight element will be located within the notch to 15 portions 21 and 22 on the upper surface of the rib have
bright, polished mirror-like re?ective properties whereby
catch light rays, for ease of cleaning and to prevent the
said face portions will be non-attractive and contrasted
edges of the notch from casting shadows on said face
to the slot surfaces to make the slot apparent to the aim
of the element.
ing eye of the shooter and aid him in lining the gun bar
Reference is now made to FIGS. 7 and 8 wherein there
is shown a modi?ed mounting for the front sight element 20 rel with a target. It is also thought that both the front
sight 25 and second sight 32 could have colored trans
25 that in this instance is made of a translucent material
lucent bodies and that the colors could be contrasted,
and is mounted in the rib to insure the highest degree of
i.e. the front sight could have a red color while the second
surface exposure of the element to the circumambient
sight could be of a white or grayish color, whereby the
light in order that the inclined rear face of the translucent
sight element will have a maximum of illumination and 25 second sight could more readily be referred to the front
sight by the shooter in the act of aiming the gun at a
be more readily apparent and attractive to the aiming eye
moving target.
of the shooter. In this modi?cation the rib 16 is formed
What is claimed is:
with laterally opposed cut-out portions 29—29 formed
1. A binocular sight for the barrels of ?rearms com
therein midway between the muzzle end edge of the rib 30
prising an elongated rib mounted upon the barrel and
and the notch 23 to form in the rib four corner tines 30
extending from the rear end to the muzzle end of the
each of which has a inturned ?nger 31 on its upper end
barrel, said rib being bisected longitudinally by the ver
for engaging the upper face of the sight element 25 to
tical plane that contains the longitudinal center axis of
secure the element in the rib.
the
barrel and having a ?at upper surface lying in a
It is contemplated that a second sight be provided for
the gun Sights illustrated in the drawing for those hunters
35 plane normal to said vertical plane, a longitudinal slot
formed centrally of the upper surface of the rib, said slot
extending into the muzzle end edge of said rib, an eye
customed to, using a second sight that is referred to the
catching element mounted wholly within the muzzle por
front sight to thereby control more accurately the eleva
tion of the slot, and said element completely ?lling the
tion of the gun. As illustrated in FIGS. 1 and 6 a second 40
muzzle portion of the slot in the lateral direction and
sight element 32 made of a solid plastic material may be
having its upper surface substantially ?ush with the upper
located within to extend laterally across an intermediate
surface of the rib.
'
part of the slot 20 in the rib 16, i.e. about 16 to 18 inches
2. A binocular sight for the barrels of ?rearms com
behind the muzzle. The second sight is triangular in lon
prising an elongated rib mounted upon the barrel and
gitudinal section and substantially square in lateral con
extending from the muzzle to the rear end portion of
tour and has a laterally extending apex portion 33 located 45 the barrel, said rib being bisected longitudinally by the
within the upper surface 19 of the rib. This sight is
vertical plane that contains the longitudinal center axis
preferably mounted in the slot 20 by milling a recess 34
of the barrel and having a ?at upper surface lying in a
in the bottom of the slot and securing the base of the
plane normal to said vertical plane, a longitudinal slot
sight body in the recess by a suitable adhesive. A modi
formed centrally in the upper surface of the rib and.
?cation of the second sight is illustrated in FIG. 9 where 50 extending from the rear portion of the rib into the muzzle
in the slot 200 in the rib terminates at an intermediate
end thereof, a lateral V-shaped notch formed in the upper
part of the rib, the terminal end of the slot as it merges
surface of the rib across the slot and located near the
with the top surface 19 of the rib forming an apparent
muzzle end of the rib, said notch having a depth corre
lateral area that may be referred to the front sight by a
sponding to the depth of the slot, a solid sight element
shooter in the act of aiming the gun. To improve the 55 positioned within and ?lling that portion of the slot situ
visibility of and emphasize this apparent lateral area a
ated between the muzzle end of the rib and the forward
second rearwardly tapering slot 330 is formed in the rib
face of the notch, and means for mounting the element
beginning just behind the rear terminal end of slot 200
in the slot.
and terminating itself at the rear end edge 18 of the
3. A binocular sight for the barrels of ?rearms as set
barrel.
forth in claim 2, characterized by the fact that the means
Referring to FIGS. Jl0 and 11 of the drawing the shot
for mounting the element in the slot comprises a groove
or trap shooters that would desire, or have become ac
gun barrel 14 is provided with a rib 160 which has a
formed in laterally opposed portions of the slot, and
longitudinal slot 201 formed centrally in its upper sur
outwardly extending shoulders on the element slidably
face, the forward end of said rib having the lateral notch 65 receivable in the grooves.
4. A binocular sight for the barrels of ?rearms as set
23 milled thereacross and the solid sight element 25
forth in claim 2, characterized by the fact that the means
mounted in the front slot portion between the muzzle and
for mounting the element in the slot comprises laterally
the notch 23. As best shown in FIG. 11 the slot 201
opposed cut-out portions formed in the rib midway be
differs from the slot 20 in that the sides thereof are in
clined upwardly and outwardly with respect to the ver 70 tween the muzzle and edge and the notch to provide
corner tines on the rib, said tines having inturned ?ngers
tical plane containing the axis of the barrel and that the
at their upper ends for engaging the upper face of the
bottom of the slot 201 is rounded but is laterally restrict
sight element.
ed as compared to the bottom of said slot 20. It is fur
ther contemplated that the bottom and sides of the slot
5. A binocular sight for the barrels of ?rearms as
201 be made non-re?ective by giving them a roughened 75 set forth in claim 2, characterized by the fact that the
3,028,674
5
6
sight element is made of translucent material and of a
contrasting color to the color of the rib.
6. A binocular sight for the barrels of ?rearms com
prising an elongated rib mounted upon the barrel and
extending from the muzzle to the rear end portion of
the barrel, said rib being bisected longitudinally by the
vertical plane that contains the longitudinal center axis
of the barrel and having a ?at upper surface lying in
a plane normal to said vertical plane, a U-shaped, longi
tudinally extending slot formed centrally in the upper
the barrel, said rib being bisected longitudinally by the
surface of the rib and extending from the rear portion of
vertical plane that contains a longitudinal center axis of
the rib into the muzzle end edge of said rib, a V-shaped
the barrel and having a ?at upper surface lying in a
notch formed in the upper surface of the rib across the
plane normal to said vertical plane, a longitudinal slot
forward part of the slot and located near and spaced
formed centrally in the upper surface of the rib and ex 10 rearwardly from the muzzle end edge of the rib and
tending from the rear portion of the rib into the muzzle
dividing the slot into a short forward portion and a long
end edge of the rib, said slot dividing the upper surface
rear portion, and a solid front sight element mounted
of the rib into a pair of narrow face portions located
within and ?lling the forward portion of the slot.
one on each side of said vertical plane and equally
12. A binocular sight for the barrels of ?rearms as set
spaced therefrom, a lateral V-shaped notch formed in the 15 forth in claim 11 characterized by the fact that the rear
upper surface of the rib across the groove and located
near the muzzle end of the rib, said notch having a depth
corresponding to the depth of the groove, and a solid
portion of the slot has upwardly and outwardly divergent
side walls and a rounded bottom wall.
13. A binocular sight for the barrels of ?rearms as
sight element mounted within and ?lling that portion of
set forth in claim 12 further characterized by the fact
the slot situated between the muzzle and edge of the rib 20 that the slot surfaces and the ?at upper surface of the
and the forward face of the notch.
rib have different light re?ective qualities.
14. A binocular sight for the barrels of ?rearms com
7. A binocular sight for the barrels of ?rearms as set
prising an elongated rib mounted upon the barrel and ex
forth in claim 6, characterized by the fact that the rib and
the slot face are of a light absorbent color whilst the
tending from the muzzle to the rear end portion of the
narrow face portions of the rib have bright, polished 25 barrel, said rib being bisected longitudinally by the verti
cal plane that contains the longitudinal center axis of
mirror re?ective properties.
the barrel and having a ?at upper surface lying in a plane
8. A binocular sight for the barrels of ?rearms com
normal to said vertical plane, a longitudinal slot formed
prising an elongated rib mounted upon the barrel and
centrally in the upper surface of the rib and extending
extending from the muzzle to the rear end of the barrel,
said rib being bisected longitudinally by the vertical plane 30 through the muzzle end edge of the rib and extending
rearwardly to at least the mid portion of the rib, said slot
that contains the longitudinal center axis of the barrel
tapering rearwardly from the muzzle end to its rear por
and having a ?at upper surface lying in a plane normal
tion, a lateral V-shaped notch formed in the upper sur
to said vertical plane, a longitudinal slot formed centrally
face of the rib across the forward portion of the slot and
in the upper surface of the rib and extending from the
rear end of the rib into the muzzle end edge of the rib, 35 located near the muzzle end of the rib, and a solid front
sight element mounted within and ?lling that portion of
a lateral V-shaped notch formed in the upper surface of
the slot situated between the muzzle end edge of the
the rib across the slot and located near the muzzle end
rib and the forward face of the notch.
edge of the rib, said notch having a depth corresponding
15. A binocular sight for the barrels of ?rearms com
to the depth of the slot, a solid front sight element
mounted within and ?lling that portion of the slot situ 40 prising an elongated rib mounted upon the barrel and ex
tending from the muzzle to the rear end portion of the
ated between the muzzle end edge of the rib and the
barrel, said rib being bisected longitudinally by the verti
forward face of the notch, a solid second sight mounted
cal plane that contains the longitudinal center axis of
within an intermediate portion of the slot and having
the barrel and having a ?at upper surface lying in a plane
a triangular shape in longitudinal section with the apex
extending across the slot in the rib, and means for mount 45 normal to said vertical plane, a longitudinal slot formed
centrally in the upper surface of the rib and extending
ing the second sight element in the slot.
through the muzzle end edge of the rib and extending
9. A binocular sight for the barrels of ?rearms as
rearwardly to at least the mid portion of the rib, said slot
set forth in claim 8, characterized by the fact that the
tapering rearwardly from the muzzle end to its rear por
front sight element and the second sight element are
tion, a second rearwardly tapering slot formed centrally
made of translucent material and of contrasting colors.
in the upper surface of the rib and extending from a point
10. A binocular sight for the barrels of ?rearms com
just rearwardly of the ?rst mentioned slot to the rear end
prising an elongated rib mounted upon the barrel and
portion of the rib, a lateral V-shaped notch formed in
extending from the muzzle to the rear end portion of the
the upper surface of the rib across the forward portion
barrel, said rib being bisected longitudinally by the verti
cal plane that contains the longitudinal center axis of 55 of the ?rst mentioned slot and located near the muzzle
end of the rib, and a solid front sight element mounted
the barrel and having a ?at upper surface lying in a plane
within and ?lling that portion of the ?rst mentioned slot
normal to said vertical plane, a longitudinal slot formed
situated between the muzzle end edge of the rib and the
centrally in the upper surface of the rib and extending
forward face of the notch.
from an intermediate portion of the rib into the muzzle
end edge of said rib, said slot having a forward portion 60
References Cited in the ?le of this patent
of uniform depth and becoming progressively shallower
UNITED STATES PATENTS
as it recedes from said forward portion, a V-shaped notch
formed in the upper surface of the rib across the forward
985,181
Korrodi ______________ __ Feb. 28, 1911
portion of the slot and located near the muzzle end
1,223,476
Coller _____________ __ Apr. 24, 1917
edge of the rib, said notch having a depth corresponding 65 1,718,458
to the depth of the forward portion of the slot, and a
2,295,791
solid front sight element mounted within and ?lling that
2,706,335
portion of the slot situated between the muzzle end edge
2,855,680
of the rib and the forward face of the notch.
11. A binocular sight for the barrels of ?rearms com
82,100
prising an elongated rib mounted upon the barrel and 70
437,725
extending from the muzzle to the rear end portion of
Hager et al. ________ __ June 25,
Hornback ____________ __ Sept. 15,
Munsey _____________ __ Apr. 19,
Christensen _________ .... Oct. 14,
1929
1942
1955
1958
FOREIGN PATENTS
Austria ______________ .... Dec. 27, 1920
Germany ____________ __ Nov. 26, 1926
UNITED STATES PATENT OFFICE
CERTIFICATE OF CORRECTION
Patent No. 3,,028g674
‘
April 10, 1962
George C. Luebkeman
It is hereby certified that error appears in the above numbered pat
ent requiring correction and that the said Letters Patent should read as
corrected below.
Column 5q
line 20? for "and" read —- end ——.
Signed and sealed this 24th day of July 1962.
(SEAL)
Atteat:
ERNEST ‘w. SWIDER
Atteating Officer
DAVID L- LADD
‘
Commissioner of Patents
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