US2869597A - Arrow fletching fixture - Google Patents

Description

Filed April 22, 1957 ATTO R NEYS United States Patent 2,869,597 ARROW FLETCHING FIXTURE Alfred W. Lozon, Marine City, Mich. Application April 22, 1957, Serial No. 654,224 2 Claims. (Cl. 144-289) This invention relates to arrow 'fietching fixtures.

An arrow fletching fixture usually' comprises a supporting structure for rotatably supporting the shaft of an arrow for the application of feathers. One object of the invention is to provide a fixture having novel indexing mechanism for indexing the shaft to a plurality of selected rotative positions for the application of feathers in circumferentially arranged relation.

Another object of the invention is to provide an arrow fletching fixture having a nock holder with which the indexing mechanism is associated.

The number of feathers on an arrow shaft depends on a number of factors such as the use for which the arrow is intended and the preference of the user. Most arrows will have three or four feathers. In the past, indexing devices have been adapted to apply a particular number of feathers to the arrow and if it was desired to apply a greater or lesser number of feathers, a separate indexing device had to be employed. This has required that the operator of the fixture have on hand one indexing device for making a three-feathered arrow, another for a fourfeathered arrow, etc. The necessity for a complete set of indexing devices has materially increased the cost of the operation and has increased the time required to turn out the arrows since the indexing devices must be removed and replaced at times depending upon the number of feathers desired. A further object of the invention is to provide an indexing device for an arrow fietching fixture which is adapted to be employed in applying varying numbers of feathers to the shaft of an arrow, thereby reducing the time and expense of the operation.

Other objects and features of the invention will become apparent as the description proceeds, especially when taken in conjunction with the accompanying drawing, illustrating a preferred embodiment of the invention, wherein:

Fig. l is a side elevational view of apparatus embodying the invention, partly in section.

Figs. 2 and 3 are sectional views taken along the lines 22 and 3-3, respectively, on Fig. 1.

Fig. 4 is an end view.

Fig. 5 is a sectional view of the rotatable nock holder.

Figs. 6 and 7 are sectional views taken along the lines 66 and '7--7 on Fig. 1.

Referring now more particularly to the drawings and especially to Fig. 1 thereof, the arrow fletching fixture is generally indicated at 10 and will be seen to comprise a frame having legs 12 and 14 which support the arrow shaft. The fixture 10 is provided with an opening 16 in the bottom for receiving suitable securing means adapted to securely mount the fixture on a base support such as a turntable, for example. In accordance with accepted practice, a plurality of fixtures 10 may be mounted in a circular array on a turntable so that an operator standing at an operating station may tend all of these fixtures, applying in sequence a feather to each of the arrow shafts supported on the fixtures. Then by the time the glue for securing the feather to the shaft of the first fixture has dried, the first fixture will return to the operating station whereupon the operator may apply the second feather to the arrow shafts in sequence.

The fixture 10 is arranged and constructed to rotatably support the shaft 18 of an arrow extending between the legs 12 and 14 of the fixture as shown in Fig. l. The nock of the arrow is received and securely supported against lateral shifting movement by a rotatable nock holder 20 mounted n a circular. opening 22-formed in leg 12 of the fixture. The nock holder is formed with an axially extending recess or bore 24 which faces in the direction of the other leg 14 and into which the nock end of the arrow shaft is adapted to extend. The nock holder is formed with a pair of diametrically opposite slots 26 and disposed in the bore 24 is a relatively thin flat plate 28 having its opposite side portions 30 disposed in the slots 26. The inner edge 32 of the plate which faces the other leg 14 of the fixture is formed to provide a notch 34. The opposite side walls 36 of the notch diverge slightly as shown in Figure 5 at an angle of approximately 9 degrees to the axis of the nock holder.

' As seen in Fig. 5, the nock of the shaft 18 receives the inner edge portion 32 of plate 28 and the opposite sides of the nock are securely gripped between the diverging sides 36 of the notch 34. The plate 28 may thus receive and support arrow shafts of different diameters.

The nock holder 20 has a knurled outer end portion 38 for rotating the nock holder and inwardly of the knurled portion it Is formed with a circumferential groove 40 of V cross section which is disposed in a plane perpendicular to the axis of rotation of the nock holder. A ball 41 is pressed into groove 40 by a compression coil spring 42 which bears against the ball at one end and against a threaded plug 43 which threads into the leg 12 of the fixture and closes the hole in the fixture in which the ball and spring are slidably disposed. The spring pressed ball prevents axial movement of the nock holder. However the nock holder may be removed from the .leg of the fixture by the application-of sufficient force and at the same time releasing the spring pressure on the ball 41 by backing off the threaded plug 43 if necessary.

The nock holder 20 is provided on its. outer surface with a plurality of conical recesses 44 which are arranged equal distances apart in circumferentially spaced relation about the axis of rotation of the nock holder and in a common plane perpendicular to the axis of the nock holder. In the present instance three such recesses are provided. The nock holder is also provided on its outer surface with a plurality of conical recesses 45 which are spaced apart equal distances in circumferentially spaced relation about the axis of rotation of the neck holder and lie in a plane perpendicular to the axis of rotation which is spaced from the plane of the recesses 44. The number of recesses 45 is different from the number of recesses 44 and in the present instance four recesses 45 are provided. The recesses 44 and 45 may be formed by a simple drilling operation.

A ball 46 is slidably supported in a passage in the leg 12 of the fixture in registration with the set of recesses 44 and is pressed toward the nock holder by a compression spring 47, the outer end of which engages the threaded plug 48. A ball 49 is slidably supported in another passage in the leg 12 of the fixture in registration with the set of recesses 45 and pressed toward the nock holder by the compression spring 50, the outer end of which is engaged 'by the plug 51. The plug 43 or 51 may be backed off by rotation to render the associated ball inoperative to releasably hold the nock holder in an indexed position. Normally one of the plugs 48 or 51 will be backed off and the other will be tightened to load the associated spring and press the associated ball against the outer surface of the nock holder so that it will enter a recess in the registering set of recesses and thereby releasably hold the nock holder in an indexed position. The nock holder may nevertheless be rotated from one indexed position to another since the recesses are conical and the balls are simply cammed out of the recess when sufficient torque is applied to the nock holder. It will be apparent that by tightening down on one of the plugs 48 or 51 and backing ofi theother, one of the balls 46 or 49.

' .3 will be rendered operative, that is pressed tightly against the neck holder to provide for indexing the arrow shaft through a of positions determined by the number .of recesses 'in the :registering set. Theother ball will :be inoperative and have no retarding effect on .the rotation of the neck holder.

Referring now to Figs. 1 and 4, the end portion of leg 14 of thefixture is formed with a slot 52 through Which the shaft of the arrow extends. The slot 52 is aligned With the axis of rotation of the nook holder. vMounted seated. The opposite sides of the plate are formed with slots 55 and receive bolts 56 which secure the plate to leg 14. As seen in Fig. 4, these slots permit a degree of lateral adjustment of the mounting plate 53 so that the recess 54 may be accurately positioned to support ashaft .in alignment with the axis of rotation of the nock holder.

.A feather clamp illustrated generally at 56 is provided for gri ping a feather 57 to be applied to the shaft. 'Provision is made for supporting the clamp adjacent to and insubstantial ali nment with the arrow shaft. The clamp cooperating clam ing members 58 61 and may be secured to legs 62 and 64 as by spot weldin for example. The spring 66 urges the clamping members toward one another to clamp a feather therebetween.

As seen in Figs. 1 and 4, the clamping member 58 is provided with a uide block 68 at one end which is ada ted to be slidably received between the op osite guid ng surfaces of the slot 52 in leg 14 of the fixture. This guide block 68 rests upon the arrow shaft in o eraceived in a slot 72 formed in plate 74 secured to the inner side of leg 12 of the fixture. 'Plate 74 also has acen- .tral opening 76 loosely receiving the arrow shaft. The plate is provided With slots 78 receive bolts 80 for securing the late to the fixture, the .slots permitting a limited lateral adjustment in themounting of the plate.

as clamping member 58. will be readily apparent end feather.

operative, that is to press it against the neck holder for releasably holding the nock holder in selected positions of rotation determined by the registering recesses, and the other plug is backed off to render the associated ball inoperative. The clamp is thenapplied to the fixture, the portions 68 and 70 thereof being slidably received in respective slots 52 and 72. A feather'is, of course, held by clamping members '58 and 60 with a portion of the feather projecting beyond the lower edges of the clamping members inposition to press against the shaft and to be adhered thereto as by glue. After the featheris securely glued to the shaft, the clamp is removed and the mock holder 20 indexed to the next rotative position to turn the shaft to a position for the application of asec- The second feather is applied as the first and the process is repeated in applying one or more additional feathers.

The feathers will desirably be applied to the shaft at a slight angle to cause the shaft to spin in flight. To accomplish this, an initial adjustment in the lateral positioning of plate 74 is made, so that the slot 72 which receives the end of clamping member '58 is moved slightly to one side so as to move the clamp and feather slightly out of true alignment with the shaft. All of the feathers may then be applied to the shaft at a slight angle without further adjustment 'of plate 74.

:If the fixture is set to turn out three-feathered arrows, that is with plug 48 tightened down and plug 51 backed off, the fixture may be readily converted to the manufacture of four-feathered arrows by tightening plug '51 and backing off plug 48. There is no need to substitute a new nook holder having provision of different indexing.

The nook holder having the indexing recesses therein 'is very inexpensively manufactured since the recesses may be formed by a simple drilling operation.

'What'l claim as my invention is: .1. An arrow fletching fixture comprising a frame for supporting the shaft of an arrow, means for rotating the arrow shaft about its axis including a nook holder 10- tatably supported on said frame and engageable with the spaced relation about the holder, detent means carried by said frame in position to engage said recesses in succession upon rotation of said nook holder, a second'series of recesses in the outersurface of said neck holder arranged in equally spaced relation about the axis of rotation of said nook holder, said second series of recesses being spaced axially of said nock References Cited in the file of this patent UNITED STATES PATENTS '86 0,446 Connally July '16, 1907 2,286,574 Rohde 'June 16, 1 942 '23 37,080 .Bitzenburger Dec. 21, 1943 2,73 1,992 Lozon 'Ian. '24, 1956

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