US1804450A - Arrow testing device - Google Patents

Description

May 12, 1931. s. c. ALLEN ARROW TESTING DEVICE Filed Apg'il 19. 1923 INVENTOR 44; ATTORNEY.

Patented May 12, 1931 UNITED STATES PATENT OFFICE SAMUEL G. ALLEN, OF MONTGOMERY COUNTY, NEAR DAYTON, OHIO, ASSIGNOR, BY 'MESNE ASSIGNMENTS, T0 DAYTON RACQUET COMPANY, ENG, OF DAYTON, 01-110, A

CORPORATION OF OHIO ARROW TESTING DEVICE Application filed April 19, 1928. Serial No. 271,318.

This invention relates to new and useful improvements in arrow test devices.

It is one of the principal objects of my in vention to provide a device or machine from which arrows may be shot at a target for the purpose of testing them. Those arrows which alight in the same circle are grouped in a set, thereby making the arrows of each set uniform. The best arrows are those that enter the center circle, and the excellence of the others is in proportion to the proximity of their alighting points to the center of the target. Thus, the arrows tested by my de vice are selected from the pattern which they make on the target.

My arrow testing device is simple in c011- struction and may be conveniently set up before a target within or outside of a building.

In the accompanying drawings illustrating my invention, Figure 1 is a side view of my arrow testing device set up a predetermined distance from a target which is shown in perspective. Figure 2 is a top' view of the trigger mechanism for releasing the arrow in the drawn bow shown in Figure 1. Figure 3 is a side view of the same. Figure 4 is a top view of the bow holding means. Figure 5 is a side view of the same. And Figure 6 is a face view of the target, showing the grading circles therein.

Referring to the accompanying drawings for a detailed description of the form of embodiment of my invention illustrated therein,

the numeral 1 designates a standard to the upper portion of which there is secured the front end of a slightly inclinedflat supportmg member 2. The latter is disposed in a vertical plane, and to its front side there is 0 bolted an angle plate 3.

Attached to the outwardly projecting part of the angle plate3 are two bolts 4, 4 which project in the same direction as the supporting member 2. Slidably mounted on the outer threaded ends of these bolts 4, 4 is a plate 5 which is held on them by nuts 6, 6.

Slidably mounted on the bolts 4, 4 between the angle plate 3 and the nuts 6, 6, are two clamping members such as the rubber blocks 7 7. These blocks or pads 7 7 are adapted to firmly grip between them the middle part of a how 8 to whose ends a string-9 is connected. This string 9 is adapted to be drawn back to the position shown in Figure 1, where it will be held by a finger mechanism now to be described. i

Referring tozFigures 4 and 5, there is secured to the inclined member 2 at the place to which the middle portion of the bow string 9 is drawn, a bracket 10 having two ears 11, 11

which act, as a'support for a pivotbolt 12.

Mounted on this bolt is a preferably flat bell crank-lever 13. The latter has a bifurcated front end to receive the hook 14 of an arrow 15 whose front portion is above the angle plate 3 ready to be shot at a target 16 hereinafter to be described.

The bifurcated end. of the lever 13 in its right angled position shown in Figures 2 and 3, is in front of the drawn string 9. to restrain it from sending thearrow toward the target until released by the trigger mechanism now to be described.

Secured betweenthe ears 17, 17 of a bracket 18 isa pivot bolt 19 on which there is mounted a right angled trigger member 20. The front end of this member terminates in a hook portion 21 that is adapted to engage the rear end of the bell crank lever 13 to restrain its outward movement when the bow 8 is deformed. The trigger member 20 is held in this position by a resilient, member such" as the fiat spring 22 which is secured at its rear end to the supporting member 2 by a screw 23. (See Figures 2 and 3).

When the rear end of the trigger member 20 is pressed inwardly by the fingers, its hook portion 21 will release the rear end of the bell V crank lever 13, whereupon the front end of the latter will no longer oppose the straight-- ening of the drawn string. The arrow will now be shot toward the target 16 upon whose face there ,is a group of circles 24, the center one being designated by the numeral 24.

The middle circle 24 has as its center the center of the circle. All arrows which alight in it are grouped in one set as those of superior quality. Those entering the other circles are grouped together, their proficiency being determined by the proximity to the center of the circle in which they alight; Thus,

with my device, it is possible to make a flight test of an arrow by shooting it from the fixed 5 or stationary bow, at a target showing group circles for classifiying it.

In order to prevent the string 9from whipv ping the arrowtwhen the latter is shot from the bow, I provide a stringguide in, the form 1 10 of a rod- 25 whichis secured to the supporting member 2 above the angle plate 3 by overhanging arms 26, 26 attached to the-topof-said member. This guide rod 25', which is adapted to be engaged by the string 9 when the latter is released by the trigger, restrains any inward movement of the string that would have atendencyto whip or'swerve the arrow from its true course.

The supporting member 2'is pivotably securedtothe standard: 1 so that itsprojectory angle may be minutely adjusted bya turnbuckle 27; which receivesthe ends. of rods: 28

and; 29: connected respectively tolthe supporting; member 2v and standard 1. (See Figure 1.) 7

I-Iavingdescribed myinvention, I claim 1 An arrow flight-testing device comprising alhorizontal fixedmember, a bow, means for securing the: middle portion of the bow to said member, a string'connected at the ends of the bow, abell crank lever pivoted to said member, one end of said lever being bifurcated to receive an arrow and toengage the string when-drawn back by thevl'atter, andia trigger lever also pivoted to saidmember, the front end of'said'trigger member formed tohook shape. to engage the free end oi the bell crank lever for the purpose-specified 2; An arrow flight-testing devicecomprising afi'xed bow support, a bow secured there to, a string-connected atthe ends of-"sai-d bow, means for holding-said string in its drawn position and; for releasing the same, and a guide rodsecured length-wiseto said support and bet-weenit and the string for the purpose specified;

In testimony whereof I have hereunto set my handthis 13th dayof April, 1928;

,i a SAMUEL G. ALLEN.

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