US3144257A

US3144257A - Arrow cresting chuck

Info

Publication number: US3144257A
Application number: US108422A
Authority: US
Inventors: Beeby G Walker
Original assignee: Individual
Current assignee: Individual
Priority date: 1961-05-08
Filing date: 1961-05-08
Publication date: 1964-08-11
Anticipated expiration: 1981-08-11

Description

g- 1964 B. s. WALKER 3,144,257

ARROW CRESTING CHUCK Filed May 8, 1961 2 Sheets-Sheet 1 FIG./.

FI/G- 7.

INVENTOR. BEEBY G MuKER A TTORZYE Y g- 11, 1964 1 B. G. WALKER 3,144,257

ARROW CRESTING CHUCK Filed May 8, 1961 2 Sheets-Sheet 2 o "2 e13 a2 /35 alv-fl CFX'I I 11 -/34 I 42 F/ A r// /A 82 INVENTOR.

BEEBY G. WALKER ATTORNEY United States Patent r 3,144,257 ARROW CRESTING CHUCK Beeby G. Walker, 131 N. Nicholson,

Monterey Park, Calif. Filed May 8, 1961, Ser. No. 1%,4'22 4 Qlaims. (Cl. 279-1) This invention relates to an improved arrow cresting chuck, and has for one of its principal objects the provision of a device of the class described which will enable the ready, convenient and efficient cresting or painting of certain insignia or other ornamental devices on the shaft of an arrow, and whereby that portion of the arrow to be so ornamented or crested is automatically rotated about an exact longitudinal central line.

Nowadays, it is the practice of many archers, either professional or amateur, to paint or otherwise mark their own insignia or crests on arrows, and this is done regardless of whether the shafts of the arrows are composed of metal tubing, such as aluminum or the like, wood, or even other materials such as plastics. It also often happens that there is a slight misalignment or curvature in the shaft of the arrow or a small displacement of the nock, whereby, when the arrow is rotated in a lathelike device, a certain amount of wobble appears, which renders the painting or cresting difficult.

One of the important objects of this invention relates to the construction of an apparatus, which, when used in conjunction with a lathe or the like, for rotating the shaft of the arrow about its longitudinal axis, can be immediately corrected to eliminate any wobbling or tendency to rotate off center, and which will remain in said corrected position until the cresting operation is completed and the arrow is removed from the chuck.

Another object of the invention resides in the construction of a magnetic type of chuck for an arrow cresting lathe, and which includes a holder for the notched end of the arrow defining a chucking axis, which holder can be readily and simply shifted to a sufiicient, slight extent to eliminate any undesirable eccentricities which may develop when the lathe, with its chuck supporting the arrow, is rotated,

Yet another important object of the invention relates to a slightly different type of adjustable chuck, likewise defining a chucking axis, for use in the cresting of arrow shafts, which like the magnetic type, is easily and economically constructed, simple and efficient in operation, and readily adjusted through any necessary range.

Another and still further important object of the invention resides in the combination of a chuck for arrow cresting which includes resilient arrow supporting element, whereby the combination will, when properly adjusted, automatically compensate for any misalignment or undesirable curvature of the arrow, its nock or other portions, whereby a very satisfactory cresting and ornamenting job can be completed with no attendant diificulties.

Other and further important objects of the invention will be apparent from the disclosures in the accompanying drawings and following specification.

The invention, in a preferred form, is illustrated in the drawings and hereinafter more fully described.

In the drawings:

FIGURE 1 is a top plan view of the improved arrow cresting chuck and lathe of this invention, illustrating the essential details thereof.

FIGURE 2 is a side elevation of the arrow cresting chuck and lathe of FIGURE 1.

FIGURE 3 is a vertical section, taken on the plane of the line 3-3 of FIGURE 2, looking in the direction indicated by the arrows, and showing one method of correcting a wobble or eccentricity by the improved arrow cresting chuck of this invention.

FIGURE 4 is likewise a vertical section on the line 44 of FIGURE 2, looking in the direction indicated.

FIGURE 5 is an exploded view, partly in section, showing details of the magnetic type of arrow cresting chuck of this invention to be used in a conventional lathe for marking the arrow shafts.

FIGURE 6 is an enlarged view of the'chuck, itself, showing in somewhat exaggerated detail the magnetic type of chuck, which comprises one of the important features of this invention, and also the arrow shaft itself as considerably out of alignment before the cresting operation.

FIGURE 7 is a view similar to FIGURE 6, but showing the chuck and the arrow after correction of the original wobble has been made.

FIGURE 8 is a slightly enlarged vertical view, partly in section, on the plane of the line 8-8 of FIGURE 7, looking toward the left.

FIGURE 9 is a view similar to the right hand portion of FIGURE 5, illustrating another method of supporting the nook and shaft of an arrow on the chuck of this invention.

FIGURE 10 is a vertical view, partly in section, somewhat similar to the showing of FIGURE 5, but illustrating a-modified form of the invention.

FIGURE 11 is an exploded view, also partly in section, illustrating in more detail the structure of FIG- URE 10.

As shown in the drawings: 7

The reference numeral 12 indicates generally the base or other support for the arrow cresting apparatus of this invention, and this usually comprises simply a wooden or other platform of suitable dimensions, which has mounted thereon at one end a motor 14 with a reduction gear 16 by means of which the shaft 18 is rotated at a suitable speed, usually at approximately 250 r.p.m.

At the other end of the plank or support is a holder for the pointed end 20 of an arrow shaft 22, having a nock 24 at its other end for cooperation with the bow string as in ordinary practice.

Also mounted on the platform or base 12 is a support 26, which includes a clamp or the like 28 for holding a template or the like 30, which is employed for guiding the brush of the craftsman cresting or otherwise marking the arrow shaft 22.

The support for the template or chart 30, as best shown in more detail in FIGURE 3, and the support for the forward end of the arrow, which arrow freely rotates thereof when the motor 14 is operating, is shown in more detail in FIGURE 4. This includes a fixed upright 31, having a pair of rollers 32 on the bracket adjacent its upright end, and a pivoted upright 34, having a single roller 36 adjacent its upper end. The two

uprights

31 and 34 are impelled toward each other by tension spring 38. The shaft 22 of the arrow is held by the three juxtaposed rollers 3236, which arrow freely rotates and also can keep that portion of the arrow on center.

Referring now to FIGURES 6 and 7, it will be noted that the chuck of this invention comprises essentially a hollow cylinder member 4i) which is held on the motor shaft 18 for rotation about the driving axis thereof, usually by means of a set screw or the like 42 (FIGURE 5) or in any other manner. One end of the cylinder is drilled to receive the motor shaft 18, and the other end is preferably hollowed out to a greater diameter to receive a cylindrical magnet 44, as best shown in FIG- URES 6 and 7. An armature member 46 is provided for the magnet, and this comprises a disc which includes an integral pin or shaft 48 to the outer end of which is fitted a'tube member 543 of rubber or some other resilient material. The armature member 46, comprising the disc-like portion and the shaft 48, and the tube member 50 are seen in FIGS. 5 and 9 to be aligned on a common axis which may be defined more particularly as the chucking axis for the nock 24 of the arrow 22. The face of the disc-like portion opposite the shaft 48 is arranged to engage the face of the magnet 44 with limited slideable movement so that the driving and chucking axes of members and 46, respectively, may or may not coincide, depending on the trueness of the arrow which is to be crested, as will be more particularly described below.

The magnet 44 is either press-fitted or adhesively fastened onto the cylinder 46, and ordinarily, the face of this magnet projects a very slight distance beyond the recessed face 52 of the cylinderdtl. This allows of a limited movement of the disc-like portion 46 of the armature with regard to the chuck cylinder 40, depending, of course, upon the strength of the magnet and also depending to some extent upon the fact that the magnet does project slightly beyond the plane of the recessed face 52, enabling an easier shifting of the armature with regard to the magnet and the chuck cylinder 49.

As best shown in FIGURE 5, the nock 24 of the arrow shaft 22 is fitted upon the end of the relatively short rubber tube 50 by simply squeezing together the outer end of the tube and then placing the notch in the nock over the end of the tube, but this can also be accomplished by fitting the nock inside the rubber tube, if such is more convenient and if the corresponding dimensions permit. See FIGURE 9.

Referring again to the showings in FIGURES 6 and 7, all of which are obviously somewhat exaggerated, it will be noted that the nock 24 is slightly out of line with respect to the shaft 22 of the arrow, or if it happens that the shaft itself is somewhat curved along its length, there will inevitably result an eccentricity and a corresponding Wobble during rotation, and this rotation will cause that portion of the arrow adjacent the template 3%) to move in and out with respect to the guiding edge of the template, whereby proper ornamentation or cresting will be difficult, to say the least.

However, by exerting a simple pressure against the wobbling arrow 22 at a point adjacent the template or guide 30 by any convenient object, such as a pencil or another arrow 22a, all as best shown in FIGURE 3, the pressure so exerted will be transmitted to the armature 4648, which supports the rubber tube 50, and this pressure will sufiice to move the armature from a central or concentric position in the chuck, as shown in FIGURE 6, to an eccentric or ofI center position with respect to the chuck 40, as best shown in FIGURE 7, and the armature will accordingly, transmit an off-center movement through the rubber tube 50 to the nock 24, and the arrow 22, and if the adjustment is properly made, this off-center or eccentric movement of the armature 46-48 will accordingly counteract the off-center movement of the arrow shaft, whereby it will rotate about its longitudinal axis, especially along the line of juxtaposition with the guide or chart 30, rendering cresting much easier and presenting a more desirable final result. The rotation of the arrow shaft 22 will be exactly on center after a proper adjustment of the armature 46 has been made, whereby the distance of any part of the arrow shaft from the edge of the guide 30 will continually be the same during adjusted rotation, enabling the operator to produce a more artistic and attractive design with a minimum expenditure of time and trouble.

In the modified form of chuck, illustrated in FIGURES 10 and 11, it will be noted that a cylindrical body is provided with a set screw 62 for proper fastening of the body onto a motor shaft by way of an opening 64 to receive the motor shaft in one end of the cylinder 60.

The other end of the cylinder is provided with an opening 66 of larger diameter than the opening 64, which is screw-threaded at 68 to receive a knurled or similar fastening nut 7 0. A fiber disc 72 is preliminarily fitted into the bottom of the opening 66, and an annulus 74, similar to the armature 46 previously described and of a diameter less than the diameter of the opening 66 is placed against the disc 72. This annulus 74 is provided with an integral or other projection in the form of a stem 76, and the annulus and its stem need not be of any soft metal, such as the armature 46. Other metals or even plastics may be employed.

The stem 76 of the disc 74 is surmounted with a fiber or other washer 78 and the fastening nut 70 is then fitted into position in any suitable manner, and preferably with a filler of grease or silica-gel 80 about the disc 74 and between the washers 72 and 7 8. As best shown in FIG- URE 10, the outer end of the stem 76 may be knurled as at 82 for a better fitting of the resilient tube 84 thereon, if such becomes necessary or desirable. Obviously, other means may be employed to move the lock nut 70 into a desired fastening position, so far as the washers 72 and 73, with the interposed disc 74, are concerned and the faces of the washers and the disc 74 are sufficiently smooth and kept sufliciently lubricated by the grease or gel 80, so as to allow of a relatively easy displacement of the disc 74, with its shaft or pin 76, and the resilient tube 84, whereby adjustment of the arrow shaft can be conveniently made as illustrated in FIG- URE 3.

It will be evident thatherein is provided an arrow cresting chuck which will so support the arrow shaft and/ or its neck in a lathe for cresting purposes, whereby practically any irregularities in either the shaft or the positioning of the nock on the shaft which would otherwise cause eccentricity of motion can be almost immediately corrected and compensated in the device of this invention. This produces a much better end result, eliminates a great deal of annoyance and extra work, and being economical to manufacture and readily adaptable to any type of arrow cresting mechanism, will prove a valuable asset to operators of this equipment provided for this purpose.

I am aware that many changes may be made and numerous details of construction varied throughout a wide range without departing from the principles of this invention, and I, therefore, do not propose limiting the patent granted hereon otherwise than as necessitated by the prior art.

I claim as my invention:

1. A device for chucking an article for relatively low speed rotation, comprising:

a first member, to rotate said first member about a drivmg axis,

said first member having a portion thereof defining a face disposed generally radially outwardly from said driving axis;

a second member defining a chucking axis and further having a portion thereof defining a face disposed generally radially outwardly from said chucking axis; and

a third member of elongate flexible material having one end secured to said second member and adapted thereby to rotate about said chucking axis,

the other end of said third member being arranged to have said article removably secured thereto; said first and second members including means for coupling said first and second members with said faces adjacent each other in driving and driven relationship, respectively, regardless of lack of coincidence of said driving and chucking axes. 2. The device of claim 1 in which said other end of said third member is arranged to removably secure the nock of an arrow.

3. A device for chucking the nock of an arrow for relatively low speed rotation of said arrow, comprising:

a first member, means at one end thereof to rotatesaid first member about a driving axis,

said first member having a portion at the other end thereof defining a face disposed generally radially outwardly from said driving aXis;

a second member defining a chucking axis and having a portion at one end thereof defining a face disposed generally radially outwardly from said chucking axis,

one of said portions including magnetic means arranged with magnetic flux emanating from the face thereof,

the other of said portions including magnetizable material,

whereby when said first member is secured for rotation by said rotation means and said second member is coupled to said first member with said faces in facing relationship the magnetic coupling alone between said portions will serve to hold and support said second member and transmit torque thereto;

and a third member of elongate flexible material having one end secured to the other end of said second member and adapted thereby to rotate about said chucking axis regardless of lack of coincidence of said driving and chucking axes,

the other end of said third member being arranged to removably secure the nock of an arrow.

4. A device for chucking the nock of an arrow for relatively low speed rotation of said arrow, comprising:

a first member, means at one end thereof to rotate said first member about a driving axis,

said first member portion including magnetic means with magnetic flux emanating from the face thereof,

said second member portion including magnetizable material,

the other end of said third member being arranged to removably secure the hook of an arrow.

References Cited in the file of this patent UNITED STATES PATENTS 689,951 Clare Dec. 31, 1901 1,401,131 Blackburn Dec. 27, 1921 2,769,642 Berry Nov. 6, 1956 2,828,131 Appleby Mar. 25, 1958

Claims

1. A DEVICE FOR CHUCKING AN ARTICLE FOR RELATIVELY LOW SPEED ROTATION, COMPRISING: A FIRST MEMBER, TO ROTATE SAID FIRST MEMBER ABOUT A DRIVING AXIS, SAID FIRST MEMBER HAVING A PORTION THEREOF DEFINING A FACE DISPOSED GENERALLY RADIALLY OUTWARDLY FROM SAID DRIVING AXIS; A SECOND MEMBER DEFINING A CHUCKING AXIS AND FURTHER HAVING A PORTION THEREOF DEFINING A FACE DISPOSED GENERALLY RADIALLY OUTWARDLY FROM SAID CHUCKING AXIS; AND A THIRD MEMBER OF ELONGATE FLEXIBLE MATERIAL HAVING ONE END SECURED TO SAID SECOND MEMBER AND ADAPTED THEREBY TO ROTATE ABOUT SAID CHUCKING AXIS, BY TO ROTATE ABOUT SAID CHUCKING AXIS, TO HAVE SAID ARTICLE REMOVABLY SECURED THERETO; SAID FIRST AND SECOND MEMBERS INCLUDING MEANS FOR COUPLING SAID FIRST AND SECOND MEMBERS WITH SAID FACES ADJACENT EACH OTHER IN DRIVING AND DRIVEN RELATIONSHIP, RESPECTIVELY, REGARDLESS OF LACK OF COINCIDENCE OF SAID DRIVING AND CHUCKING AXES.