US3846998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for testing and straightening arrows
Assignee: Individual
•
Filing: 1973-08-09
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Granted: 1974-11-12
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Expires: 1993-08-09
Abstract
Abstract A machine is provided for testing the straightness of arrows, for localizing and measuring any want of straightness, and for mechanically correcting any defect of this nature that may be discovered. The machine desirably includes a central stand on which a deflection meter is mounted, together with a straightening lever. A trackway in the form of spaced, parallel horizontal bars is provided. Arrow supporting and rotating carriages are mounted on the trackway with freedom for independent adjustment toward and from the central stand. Each carriage includes two side by side rollers and means for operating the rollers in unison to turn an arrow engaged by the meter and to sustain the arrow during straightening.
Inventors
- 👤 W Lock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:49
CPC Classifications
F; F41; F41B; F41B5/00; F41B5/14; F41B5/1442; F41B5/1446; B; B21; B21D; B21D3/00; B21D3/16; F41B5/148
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
239 words
An arrow testing and straightening machine for testing straightness and directly, manually correcting deviations from straightness of arrow shafts composed of freely bendable, metallic tubing, comprising, in combination, a. a stand located at a central deflection detecting and straightening station; b. a fixed, straight, horizontal trackway constructed and arranged to extend at opposite sides of the deflection detecting and straightening station; c. a pair of cooperative arrow supporting carriages mounted on said trackway at opposite sides of said station with freedom for individual adjustment along the trackway toward and from said central station, each of said carriages including a pair of side by side rollers adapted jointly to support an arrow shaft segment between them, and means constructed and arranged to operate the rollers of each carriage in unison for turning a roller supported arrow; d. a sensitive, deflection detecting, magnifying and indicating instrument of the dial type mounted on the stand and comprising a plunger, spring pressed downward to bear downward against the upper side of the arrow shaft being tested, and e. a manually operable deflection correcting means at said station, engageable with the upper side of the carriagebridging arrow shaft, and movable freely in a downward direction to deform the arrow shaft beyond its elastic limit, the space beneath the carriage-bridging arrow shaft being free of obstruction so that the arrow shaft can be freely deformed to any extent dictated by the judgment of the operator.
Claim 2
Dependent Claim
239 words
An arrow testing and straightening machine for testing straightness and directly, manually correcting deviations from straightness of arrow shafts composed of freely bendable, metallic tubing, comprising, in combination, a. a stand located at a central deflection detecting and straightening station; b. a fixed, straight, horizontal trackway constructed and arranged to extend at opposite sides of the deflection detecting and straightening station; c. a pair of cooperative arrow supporting carriages mounted on said trackway at opposite sides of said station with freedom for individual adjustment along the trackway toward and from said central station, each of said carriages including a pair of side by side rollers adapted jointly to support an arrow shaft segment between them, and means constructed and arranged to operate the rollers of each carriage in unison for turning a roller supported arrow; d. a sensitive, deflection detecting, magnifying and indicating instrument of the dial type mounted on the stand and comprising a plunger, spring pressed downward to bear downward against the upper side of the arrow shaft being tested, and e. a manually operable deflection correcting means at said station, engageable with the upper side of the carriagebridging arrow shaft, and movable freely in a downward direction to deform the arrow shaft beyond its elastic limit, the space beneath the carriage-bridging arrow shaft being free of obstruction so that the arrow shaft can be freely deformed to any extent dictated by the judgment of the operator.
Claim 3
Dependent Claim
47 words
An arrow testing and straightening machine as set forth in claim 1 in which the deflection detecting and indicating means comprises a spring loaded plunger, a graduated dial, a rotary indicating pointer associated with said dial, and means for rotatively operating the indicating pointer from the plunger.
Claim 4
Dependent Claim
66 words
An arrow testing and straightening machine as set forth in claim 1 in which each carriage includes a manually operable belt-driving wheel at the front of the carriage, a cooperative belt-supporting wheel at the rear of the carriage, a belt trained on said front and rear wheels, and a pair of intermediate, arrow-supporting wheels engaged and driven in unison by the upper reach of the belt.
Claim 5
Dependent Claim
24 words
An arrow testing and straightening machine as set forth in claim 3 in which the belt has the form of a tensed elastic band.
Claim 6
Dependent Claim
86 words
An arrow tEsting and straightening machine as set forth in claim 1 in which the manually operable, deflection correcting means includes a rigid lever, means on the stand supporting the lever for rocking movement in a vertical plane, and elastic means connecting a first or inactive arm of the lever to the stand under tension and thereby biasing a second or active arm of the lever to a normal, idle position above the level normally occupied by an arrow which is jointly supported by the carriages.
Claim 7
Dependent Claim
164 words
An arrow testing and straightening machine as set forth in claim 1 in which a rigid supporting frame is provided for the trackway and the central stand, and a carrying case is attached to the frame and thereby made an unitary and permanent part of the machine, said carrying case being of right prismatic form and comprising body and cover portions having hingedly connected rear walls of equal height, and complementary end walls of variable height with the back wall of the body exceeding in height the front wall of the body by a substantial amount and with the front wall of the cover exceeding in height the back wall of the cover by substantially the same amount, the construction and arrangement being such that the full height of the carrying case is adequate to contain the complete machine, but the restricted height of the front wall of the tray makes fully and freely accessible the means for operating the arrow shaft turning rollers.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |