U.S. patent number 3,696,517 [Application Number 05/045,189] was granted by the patent office on 1972-10-10 for range finder and bow sight device.
Invention is credited to Marlow W. Larson.
United States Patent |
3,696,517 |
Larson |
October 10, 1972 |
RANGE FINDER AND BOW SIGHT DEVICE
Abstract
A range finder and bow sight device wherein plural sights are
made adjustable and correlated with a fixed, stepped range finder.
The individual bow sights used are adjustable both for height and
azimuth, and in a preferred form of the invention, can be locked
through such adjustment to a vertical slide member. Mounts on the
device are self-aligning and can be screwed or taped to a
conventional archery bow.
Inventors: |
Larson; Marlow W. (Ogden,
UT) |
Family
ID: |
21936499 |
Appl.
No.: |
05/045,189 |
Filed: |
June 10, 1970 |
Current U.S.
Class: |
33/265;
33/280 |
Current CPC
Class: |
F41G
1/467 (20130101) |
Current International
Class: |
F41G
1/00 (20060101); F41G 1/467 (20060101); F41g
001/00 (); F41b 005/00 () |
Field of
Search: |
;33/46A,51,64B |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Forman; Leonard
Assistant Examiner: Stephan; Steven L.
Claims
I claim:
1. A range-finder, bow-sight device including, in combination, a
range-finder portion having a multiplicity of fixedly disposed
horizontal crossbars adjacent ones of which define respective,
separated, light-transmissive viewing spaces of respective, unique
heights, said range finder portion including respective identifying
indicia means for respectively identifying said spaces as to ranges
represented thereby as when a target of given height, when viewed
by a user, visibly fills exactly a respective, determined one of
said spaces when said target is at a range corresponding to that of
the indicia means of the space through which said target is viewed;
a bow-sight portion comprising a depending, elongate support, and a
plurality of sighting means for respectively sighting targets at
respective ranges established by said range-finder portion as
identified by said indicia means, slideably mounted upon said
elongate support and adjustably secured thereto; and means for
mounting said device to a bow such that said range-finder portion
is laterally offset relative to said bow, for viewing purposes,
said range-finder portion being constructed to be so offset, and
wherein respective ones of said sighting means individually
comprise a boss mount having a transverse interior slit and being
slideably disposed upon said elongate support, and sighting screw
means for releasably locking said boss mount to said elongate
support and comprising a sight-tipped sighting screw threadedly
disposed through said boss mount, through said interior slit, and
nut means threaded upon said sighting screw for locking said
sighting screw in place such that the sight thereof is disposed at
a desired azimuth.
2. A range-finder, bow-sight device including, in combination, a
range-finder portion having a multiplicity of fixedly disposed,
horizontal crossbars adjacent ones of which define respective,
separated, light-transmissive viewing spaces of respective, unique
heights, said range finder portion including respective identifying
indicia means for respectively identifying said spaces as to ranges
represented thereby as when a target of given height, when viewed
by a user, visibly fills exactly a respective, determined one of
said spaces when said target is at a range corresponding to that of
the indicia means of the space through which said target is viewed;
a bow-sight portion comprising a depending, elongate support, and a
plurality of sighting means for respectively sighting targets at
respective ranges established by said range-finder portion as
identified by said indicia means, slideably mounted upon said
elongate support and adjustably secured thereto; and means for
mounting said device to a bow such that said range-finder portion
is laterally offset relative to said bow, for viewing purposes,
said range-finder portion being constructed to be so offset, and
wherein respective ones of said sighting means individually
comprise a boss mount having a transverse interior slit and being
slideably disposed upon said elongate support, and sighting screw
means for releasably locking said boss mount to said elongate
support and comprising a sight-tipped sighting screw threadedly
disposed through said boss mount, through said interior slit, and
nut means threaded upon said sighting screw for locking said
sighting screw in place such that the sight thereof is disposed at
a desired azimuth, and wherein each of said sighting means includes
an undercut slot, said elongate support being correspondingly
configured for retentively receiving said sighting means at their
undercut slot as aforesaid.
Description
The present invention relates to range finder and bow sight devices
and, more particularly, to a new and improved device of the type
described wherein plural sights, adjustable as to both heighth and
azimuth, are correlated with respective sections of the range
finder such that when one determines the range of the particular
object such as a deer, this by looking through the range finder, he
may immediately select the correlated sight to be used in aiming
his arrow toward the object being sighted.
In the present invention the device incorporates a range finder
portion having stepped, horizontal, mutually spaced bars the
distances between which sub-tend an angle, from the observer's eye
there-toward, so that when an object such as the chest cavity of a
deer "fills" the space between a particular set of bars the hunter
knows that the associated index of the range finder spells the
distance of the object, such as a deer, from the hunter.
"Sighting in" the bow involves use of the range finder such that at
a given distance from the target, corresponding to a given index on
the range finder, the user can adjust both vertically and sideways
the several sighting mechanisms provided the device. These sighting
mechanisms include screws having sighting beads on their respective
end extremities. The screws are threaded through and are adjustably
contained in slide boss mounts and are provided with locking means
to fix not only the sighting bead in a chosen azimuth position but
also the boss mount to a vertical slide at a particular heighth
level. As to sighting, the same is accomplished for all of the
mounting bosses and their associated sighting beads, this for the
entire range of distance readings of the range finder.
Means are supplied the device for either accommodating screw
attachment thereof to a bow or for providing tape attachment, as
desired. Accordingly, a principal object of the present invention
is to provide a new and improved range finder and sighting device
for bows.
A further object is to provide a range finder and sighting device
which, by its construction, can be mounted to almost any type of
bow either by screws or by tape, for example.
A further object of the invention is to provide a range finder and
sighting device wherein the range finder distance indexes are
correlated with individual ones of plural sighting means, the
latter being adjustable both for heighth and azimuth and bead
positioning in accordance with the requirements of the user.
An additional object is to provide a range finder and bow sighting
device wherein individual sights thereof can be locked as to
vertical position and azimuth in a simple and convenient manner,
this by inexpensively produced structure.
A further object of the device is to provide for a bow a range
finder device such that the cross bars thereof are light-receptive,
this to be clearly visible even during periods of low
illumination.
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 in which:
FIG. 1 is a side elevation of a archery bow incorporating the range
finder and sighting device of the invention.
FIG. 2 is a perspective view, exploded as to mounts, of the range
finder and sighting device of the present invention.
FIG. 3 is an enlarged, fragmentary, side view of a central portion
of the bow of FIG. 1, is reversed 180.degree., and illustrates the
manner in which tape can be employed to secure the mounts of the
device to the bow.
FIG. 4 is an enlarged fragmentary view taken along the line 4--4 in
FIG. 3.
FIG. 5 is a transverse cross section taken along the line 5--5 in
FIG. 4; in this figure is shown the condition of a boss mount
before the tightening down thereof to fix the heighth of such boss
along its slide.
FIG. 6 is similar to FIG. 5 it illustrates the device as being
locked down so as to preclude movement of the mounting boss of the
associated sighting means and of its sighting screw either
vertically or horizontally.
FIG. 7 is a fragmentary, rear elevation of the bow when used by the
viewer, this to illustrate the manner of employment of the range
finder to ascertain the distance at which an object such as a deer
is being sighted.
FIG. 8 is similar to FIG. 7, illustrating that once the range of
the hunted object has been ascertained, then the object may be
zeroed in by the corresponding bead being sighted preparatory to
arrow release.
In FIG. 1 the bow 10 is strung with a conventional bow string 11.
Bow 10 includes the conventional handle grip 12, arrow guide way
13, and thickened upper portion 14. Mounted to upper portion 14 is
the range finder and sighting device 15 of the present invention.
Device 15 includes an upper range finder portion 16 taking the form
of a frame 17 provided with cross bars 18. Cross bars 18 are
preferably fabricated from nylon of a clear, colorless type and are
glued or otherwise secured in place in aligned notches 19, by way
of example. A clear nylon is preferred for the cross bars 18 since
such tends to absorb light and become visible even during periods
of very low illumination, as in early morning or late evening
hours.
Disposed between cross bars 18 are respective distance indices 20
indicating distances such as 20-60 yards as between the object
being sighted and the observer. The spacings between cross bars 18
for the corresponding distances are preferably so chosen that the
chest cavity of a deer or other animal to be hunted just fills the
space as relates to the angle subtended by adjacent cross bars
relative to the observer's sighting eye. See FIG. 7. Accordingly,
the upper space is "filled" when a deer of average size appears 20
yards from the observer. The space associated with the cross bars
relating to the marking "30" in FIG. 2 is just filled by the chest
cavity of a deer of average size when such deer is 30 yards from
the observer holding the bow.
Depending from the frame 17 is an elongate slide support 21 having
inwardly tapered opposite sides 22 and 23. Such opposite sides are
illustrated with more particularity in FIGS. 5 and 6. A base 24 may
also be supplied, which base will be made integral with an elongate
slide support 21, by way of example.
Slidably mounted upon elongate slide support 21 are plural,
resilient, inwardly compressible, plastic slide boss mounts 25
having distance indicia 20' corresponding to range indicia 20. Each
of these are detailed in FIGS. 5 and 6 and, as shown, include a
threaded bore 26 and an undercut slot 27. An interior transverse
slot 28 is also provided and accommodates the squeezing together of
portions 29 and 30 of the slide boss mount when locking nut 31 of
FIG. 5 is turned down to the position shown in FIG. 6. Note is to
be made that the locking nut 31 threadedly engages the threaded
shaft of sighting screw 32. The latter incorporates a respective
sighting bead 33 at its leftward extremity, see FIG. 2 and also
FIGS. 5 and 6.
FIGS. 5 and 6 illustrate that the slide boss mount 25 for a
particular yardage, e.l.g. 20-50 yards, may be slid up and down
elongate slide support 21 to the exact position needed relative to
heighth of the same.
Furthermore, during the "sighting in" procedure at the target
range, not only can exact height be determined and set by the
sighting screw and locking nut combination, but, in addition, when
the locking nut is unlocked in the position shown in FIG. 5, then
the sighting screw 32 can be rotated clockwise or counter-clockwise
about its own axis so that there is correct azimuth positioning of
sighting bead 33 of that respective screw. Subsequently the nut 31
will be tightened down against mount 25.
The above procedure will be followed for accurately positioning,
both vertically and for azimuth, the sighting screw beads of the
several sighting screws in correspondence with the various
distances enumerated in range finder portion 16.
As to mounting to the bow, the range finder portion 16 will be
provided with a pair of mounting brackets 34 each of which include
mounting ears 35 and 36, a base 37, and upstanding pivot ears 38
and 39. The latter are provided with counter-sunk apertures 40 and
41 for receiving a respective pivot screw 42. Pivot screw 42
proceeds through pivot boss 43, and its upper counterpart, not
shown in FIG. 2, so as to provide a pivotal connection as between
the mounting bracket 34 and its respective pivot boss or ear 43.
The mountings ears 35 and 36 may be taped to the bow as by tape T
in FIG. 3, or the same way be provided with mounting screws 45 and
46 as illustrated in FIG. 2.
In usage, the archer is supplied with a range finder and sighting
device 15 for his bow 10. The range finder and sighting device 15
may be temporarily fitted to the bow, as by tape T in FIG. 3, for a
preliminary determination as to approximately correct fitting. The
device may simple remain taped to the bow or, if desired screws 45
and 46 may be supplied to secure the device to the bow. It is noted
that the device can be fitted to almost any conceivable type of bow
because of the pivot mounts associated with mounting brackets 34
and their pivotal connection to respective ears 43.
In properly adjusting the device the user will stand back, say, 20
yards from a given target approximating in heighth the average
dimension of the chest cavity of a deer, by way of example. At 20
yards the space between the upper cross bars 18 of the range finder
portion 16 of the device will just be "filled." At this point the
corresponding slide boss mount 25 is adjusted vertically along the
elongate slide support 21 such that, after repeated shooting
through trial and error, the associated bead 33 of the upper screw
32 is exactly placed both as to height and azimuth. At this point
the associated locking nut 31 is turned down against the mount so
as to compress the portions 29 and 30 together and against the
opposite sides 22 and 23 of elongate slide support 21. This
operation locks this particular slide boss mount to the slide
support and, hence, the sighting mechanism is accurately positioned
for this particular distance i.e. 20 yards.
A corresponding procedure is followed for each of the next
enumerated distances, 30-60 yards, relative to range finder portion
16 and remaining slide boss mounts 25 so that, correspondingly, the
beads 33 of the remaining sighting screws can be fixed from the
point of view of both heighth and azimuth. Again, this is
accomplished simultaneously by unlocking the locking nut 31, then
moving the slide boss mount up and down to the proper position and
screwing the sighting screw appropriately so that the proper point
disposition of bead 33 is achieved. Again, exact positioning is
determined through trial and error after several arrow releases.
Adjustments will vary depending upon the strength of the bow,
stance of the user, and so forth.
In hunting, the object such as a deer being sought is first sighted
and centered between those two cross bars 18 of the range finder
portion at which the chest cavity just fills the distance between
these two cross bars. See FIG. 17. At this point the user knows the
approximate distance of the deer from the bow. He then selects the
appropriate bead, of corresponding distance 20', of the sighting
screw relative to this same yardage distance, see FIG. 8, and
releases his arrow toward the target.
What is provided therefore is a new and improved device, readily
and conveniently attachable to target and hunting bows, herein the
range finding operation and sighting function are accomplished by
use of a single device. MOre specifically, a series of
bead-providing sighting screws are incorporated in the design and
are correlated with the range finder of the device such that an
ascertainment of the distance of a sighted object from the
observer, as determined by the range finder, is utilized to select
the appropriate sighting screw for that distance such that the
appropriate bead may be zeroed in on the target in an accurate
manner.
While particular embodiments of the present invention have been
shown and described, it will be obvious to those skilled in the art
that changes and modifications may be made without departing from
this invention in its broader aspects, and, therefore, the aim in
the appended claims is to cover all such changes and modifications
as fall within the true spirit and scope of this invention.
* * * * *