US2941296A - Archery sight - Google Patents

Description

June 21, 1960 c. J. GRANDT 2,941,296

ARCHERY sxcuw Filed May 13, 1957 IN V EN TOR.

United States Patent ce 941396 Patented June 21, 1960 Fig. 2 is a rear elevational view of a portion of the bow, showing the bow sight in greater detail;

Fig. 3 is a front elevational view of a portion of the 2,941,296 bow showing in detail the cooperating parts of the bow sight; ARCHERY SIGHT Fig. 4 is a side elevational view of a portion of the bow Clar J, G dt, Chi 11], disclosing the brackets holding the track to the bow and (1214 Decorah, Long Lake, Ingleside, 11].) end portions of the parts of the bow sight in greater de- Filed May 13, 1957, Ser. No. 658,557 4 Claims. (CI. 33-46) This invention relates to a sighting device and more particularly to a sight adapted to be mounted on a bow.

Archery sights must be capable of controlled vertical and lateral adjustments. To provide this, sighting devices previously constructed involved a rather large number of interconnected parts such as screw clamps and precision cut racks which were constructed at considerable expense with comparatively close tolerances. Since bows are subject to generally rough treatment, these parts were frequently damaged, changing the fit of the parts, and making close and careful adjustment of the sight impossible.

An added difficulty resulting from the close tolerances required arose from the fact that since bows are frequently used out doors, the sights are subjected to the corrosive effect of the elements. What is needed therefore and is the chief object of this invention, is an archery sight formed from simple easily constructed parts which can withstand rough treatment, and whose operation is not afiected by variations in the tolerances of the parts.

A further object of this invention is to devise an archery sight involving only a minimum number of simple parts.

Still another object of this invention is to devise a support for an instrument, such as a bow sight, involving only a minimum number of unitary parts, which permit adjustment of the instrument in two perpendicular directions.

Yet another object of this invention is to devise means for movably mounting an instrument such as a bow sight, on a carrier which is itself movably mounted on a support, which means simultaneously and frictionally secures the instrument to the carrier and the carrier to the support.

Yet a further object of this invention is to construct a bow sight from simple parts which is inexpensive to make, durable, and attractive in appearance.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel features of construction, arrangement and a combination of parts hereinafter fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims,.it being understood that various changes in the form, proportion, size and minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages of the invention.

For the purpose of facilitating an understanding of my invention, I have illustrated in the accompanying drawings a preferred embodiment thereof, from an inspection of which, when considered in connection with the following description, my invention, its mode of construction, assembly and operation, and many of its advantages should be readily understood and appreciated.

Referring to the drawings in which the same characters a of reference are employed to indicate corresponding or similar parts throughout the several figures of the drawings:

Fig. 1 is a side elevational view of the bow with the bow sight attached;

tall;

Fig. 5 is a sectional view taken on the plane of line 5-5 of Fig. 2;

Fig. 6 is a sectional Fig. 2.

Referring now to Figs. 1 and 2 of the drawings, reference numeral 10 indicates generally a bow having mounted thereon an archery sight indicated generally by reference numeral 12. As seen more clearly in Fig. 3, the archery sight includes a track 14, a carrier 16, and a sighting element 18. The track 14 may comprise spaced parallel guide rods 20 and 22 which are in spaced parallel relationship to the bow. These rods are secured at their opposite ends to brackets 24 and 26 which may be mounted on the central portion of the bow by any convenient means as for example screws 28 (see Fig. 4).

l The carrier 16, in the embodiment shown, may comprise a clothes-pin-like clamp. formed of resilient springlike material and may be cyindrical in shape. The carrier is split into a pair of legs 25 and 27 by a cut 28 beginning on a chord on end 30 and extending into the body of the carrier along a plane substantially parallel to its axis (see Fig. 5). The cut terminates at a point adajacent the opposite end of the carrier. A pair of spaced parallel track-receiving-guideways 32 and 34 extend through the cylinder in a direction substantially transverse to the axis of the cylinder (see Fig. 6). These trackreceiving-guideways communicate with the cut 28 as shown. The parallel guide rods 20 and 22 comprising the track 14 extend through these track-receiving-guideways in the carrier 16 whereby the carrier is movably mounted on the track in interlocking engagement,

A sight-rod-receiving-guideway 36 extends through the opposite ends of the carrier at a slight angle to the plane of the cut. Guideway 36 communicates with cut 28 but because of the inclined plane of said guideway it com municates with only one of the track-receiving-guideways, i.e. 34 as shown in Figs. 5 and 6. A portion 38 of guide rod 22 partially obstructs guideway 36 for purposes described below.

The sighting element 18 as seen in the drawings comprises -a sight rod 40 and an attached sight ring 42. As seen in Fig. 6 the sight rod is rigidly secured to the sight ring 42 and one end 44 penetrates the ring and terminates in a sight knob 46 at its center.

In operation, when the free end 48 of the sight rod 40 is inserted in the sight-rod-receiving-guideway 36, in carrier 16, it encounters the obstructing portion 38 of guide rod 22. Since the carrier is formed from resilient material, increased pressure on the sight rod tends to further spread apart the legs 25 and 27 of the split cylindrical carrier 16 thereby permitting the free end 48 to pass over the obstructing portion 38 and completely through the carrier. As seen in Fig. 6, a portion of the surface of the sight rod 40 is in engagement with the obstructing portion 38 of guided rod 22. Since the legs 25 and 27 are spread apart against the resilience of the carrier material, the tendency of the legs to return to their natural position tends to exert a force on the sight rod forcing it into frictional engagement with portion 38 of the guide rod 22. This holds the sighting element 18 in position on the carrier with enough force to insure against its being shifted by minor accidental jars. Simultaneously the force exerted by the legs of thev carrier forces portion 38 of view taken on the line 6--6 of guide rod 22 against the inner surface of guideway 34 increasing the frictional engagement of the carrier with the track, so that the carrier also resists being shifted by minor accidental jars. This arrangement permitsa controlled horizontal and but without complicated mechanical clamping devices.

Itis' believed that my invention, its mode of construc-. tion" and assembly, and many of its advantages should be readily understood from the foregoing without further' description, and it should also be manifest that while a preferred embodiment of the invention has been shown and described for illustrative purposes, the structural details are nevertheless capable of wide variation within the purview of my invention as defined in the appended claims.

What I claim and desire to secure by Letters Patentof the v United States is:

1; In combination with an archery how, a bow sight apparatus comprising a track mounted, on a portion of said bow, a carrier, said carrier comprising a partially split'cylinder having a pair of legs separated by arcut' heginning on a chord at one end and extending along'a plane substantially parallel to the axis of the cylinder to apoint spaced from the othe rend, at least one track receiving-guideway extending through said cylinder in a direction substantially transverse to the axis of the cylinder, said track-receiving-guideway communicating with said out in the cylinder, said track penetrating said trackreceiving-guideway whereby said carrier is movably mounted on said track, a rod-receiving-guideway extending through the opposed ends of the carrier and communicatingwith said out and said track-receiving-guideway, the portion of the track in said track-receiving guideway partially obstructing said rod-receivingaguideway, an instrument, said instrument having a rod rigidly secured thereto, said rod forced through said rod-receiving-guideway and past said obstructing track portion whereby the legs of said cylinder are spreadapart thereby forcing said rod into frictional engagement with said carrier and further increasing. the frictional engagement between the carrier and the track.

2. An archery sight including a track, said track including a pair of spaced parallel guide rods adapted to'be rigidly mounted on a bow, a carrier, said carrier comprising a partially split cylinder having, a cutbeginning on a chord at one end and extending along a plane substan@ tially parallel to the axis ofthe cylinder to a point in spaced relationship with the other end, a pair of spaced parallel track-receiving-guideways extending through said cylindrical carrier ina direction substantially transverse to the axis, said track-receiving-guideways communicating with said out in the cylinder, said guide-rods penetrating said track-receiving-guideways whereby said carrier is movably mounted on said track, a sight-rod-receiving vertical adjustment of the sightguideway extending through the opposed ends of the carrier in a plane slightly inclined to the plane of the cut, said sight-r0d-receiving-guideway having a section communicating with said cut andone of said track-receivingguideways, said track having a rod portion in said one track-receiving-guideway partially obstructing said section of said sight-r0d-receiving-guideway, a sight, said sight having sight rod rigidly secured thereto, said sight rod forced through said'sight-r0d-receiving-guideway and past said obstructing rod portion by expanding said split cylinder, whereby saidsight rod isfrictionally secured to said carrier; and the frictional engagement between said carrier and: said track'is increased, permittin'gcontrolled lateral and vertical adjustment of the sight.

3. The apparatus set' forth in claim 2 wherein said sight includes a ring, said sight rod having an end penetrating said ring and terminating in a knob at the center of the ring.

4. An archery device comprising a how, a track 7 mounted o'n'said bow, arresilient deformable carrier, said carrier comprising a split cylinder having a track-receivingguidew'ay extending therethrough, said track penetrating said track receiving guideway whereby said carrier is movably mounted on said track, saidcarrier having a second guideway'extending therethrough, said second guideway communicating with said track-receiving guideway and said track, said track having a portion partially obstructing said second guideway, a sight, said sight having guideway-penetrating means rigidly secured thereto, said guidewayapenetrating means forced through said second guideway and past said obstructing track portion by deforming said carrier, whereby said sight is frictionally secured to said carrier and the frictional engagement between said carrier and said track is increased.

References Cited in the file-of this patent UNITED STATES PATENTS OTHER REFERENCES Beam Compass For Rough Lay-Out Work, on page 979' of Machinery, August 1926.

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