Patent US3820367A successfully refreshed from Google Patents.
US3820367A
Expired / Lapsed
US
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Power feed and uncoiler for hot forging machines or the like
Assignee: National Machinery Co
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Filing: 1972-10-30
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Granted: 1974-06-28
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Expires: 1992-10-30
Abstract
Abstract A hot forging machine system is disclosed in which stock in coil form having a first radius of curvature is supplied to the machine. The stock feed includes a preliminary powered straightener which partially straightens the coiled stock and feeds it into a loop. The intermittently driven forging machine feed rolls pull the stock from the loop through a secondary straightener to complete the straightening operation and through a heater which heats the stock before it reaches the forging machine. Sensing means determine the size of the loop and control the rate of operation of the preliminary straightener to maintain the size of the loop within predetermined limits. Undesirable elongation of the heated stock does not occur, since the force required to intermittently feed the stock through the secondary straightener is not sufficiently great to cause such elongation.
Inventors
- 👤 G Kline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:05
CPC Classifications
B; B21; B21J; B21J13/00; B21J13/08; B21K; B21K27/00; B21K27/02
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
120 words
A hot forging machine system operable with coiled stock having a first radius of curvature comprising intermittently driven feed means operable to intermittently feed stock into a forging machine, a powered first straightener operable to remove stock from a coil and supply such stock to a loop with a radius substantially larger than said first radius of curvature, a secondary straightener operable to receive stock from said loop and complete the straightening thereof, and a heater operable to heat the stock before it reaches said feed means, said feed means being operable to intermittently pull stock through said secondary straightener and heater, said first straightener being operable continuously at a controlled speed to maintain said loop a substantially constant size.
Claim 2
Dependent Claim
120 words
A hot forging machine system operable with coiled stock having a first radius of curvature comprising intermittently driven feed means operable to intermittently feed stock into a forging machine, a powered first straightener operable to remove stock from a coil and supply such stock to a loop with a radius substantially larger than said first radius of curvature, a secondary straightener operable to receive stock from said loop and complete the straightening thereof, and a heater operable to heat the stock before it reaches said feed means, said feed means being operable to intermittently pull stock through said secondary straightener and heater, said first straightener being operable continuously at a controlled speed to maintain said loop a substantially constant size.
Claim 3
Dependent Claim
27 words
A hot fOrging machine system as set forth in claim 1, wherein said secondary straightener completes the straightening of said stock before said stock enters said heater.
Claim 4
Dependent Claim
45 words
A hot forging machine system as set forth in claim 2, wherein said first straightener includes a sensor to determine the size of said loop and control the speed of operation of said first straightener to maintain the size of said loop within predetermined limits.
Claim 5
Dependent Claim
27 words
A hot forging machine as set forth in claim 3 wherein said sensor automatically stops said first straightener when the operation of said feed means is terminated.
Claim 6
Dependent Claim
29 words
A hot forging machine as set forth in claim 4 wherein means are provided to remove stock from said heater when the operation of said feed means is interrupted.
Claim 7
Dependent Claim
39 words
A hot forging machine as set forth in claim 4 wherein a shear and reverse feed means is provided to cut a length of stock within said heater from the stock supply and remove such length from said heater.
Claim 8
Dependent Claim
26 words
A hot forging machine system as set forth in claim 6 wherein said secondary straightener is movable to a position clear of said length of stock.
Claim 9
Dependent Claim
33 words
A hot forging machine system as set forth in claim 7 wherein the force required to complete the straightening of stock by said secondary straightener is transmitted along heated stock in said heater.
Claim 10
Dependent Claim
42 words
A hot forging machine as set forth in claim 8 wherein separate power means are provided to initially move stock through said secondary straightener and said heater to said feed means and are non-operative after said feed means commence to feed stock.
Claim 11
Dependent Claim
43 words
A hot forging machine system as set forth in claim 2, wherein said secondary straightener is powered to provide the force required to complete the straightening of said stock and said feed means operates to intermittently move unstraightened stock into said secondary straightener.
Claim 12
Dependent Claim
33 words
A hot forging machine system as set forth in claim 2, wherein the force required to complete the straightening of stock by said secondary straightener is transmitted along heated stock in said heater.
Claim 13
Dependent Claim
28 words
A hot forging machine system as set forth in claim 1, wherein means are provided to support said coiled stock with the axis thereof in a vertical position.
Claim 14
Dependent Claim
79 words
A hot forging machine system as set forth in claim 1, wherein means are provided to support said coil of stock with its axis in a horizontal position, said first straightener including a preliminary powered straightener means operable to substantially completely straighten the stock as it feeds from the coil and a secondary means for bending the stock to provide said radius which is substantially larger than said first radius of curvature and supplying said stock to said loop.
Claim 15
Dependent Claim
30 words
A hot forging machine system as set forth in claim 13, wherein said first preliminary straightener operates in a vertical plane and said secondary means operates in a horizontal plane.
Claim 16
Dependent Claim
125 words
In a hot forging machine system operable with coiled stock having a first radius of curvature and including intermittently driven feed means operable to intermittently feed stock into a forging machine, and a heater for heating such stock before it reaches said forging machine, the improvement comprising a powered first straightener operable to remove stock from a coil and supply such stock to a loop with a radius of curvature greater than said first radius of curvature, and a secondary straightener operable to receive stock from said loop and complete the straightening thereof as such stock is removed from said loop by said intermittently driven feed means, said first straightener being operable continuously at a controlled speed maintaining said loop at a substantially constant size.
Claim 17
Dependent Claim
125 words
In a hot forging machine system operable with coiled stock having a first radius of curvature and including intermittently driven feed means operable to intermittently feed stock into a forging machine, and a heater for heating such stock before it reaches said forging machine, the improvement comprising a powered first straightener operable to remove stock from a coil and supply such stock to a loop with a radius of curvature greater than said first radius of curvature, and a secondary straightener operable to receive stock from said loop and complete the straightening thereof as such stock is removed from said loop by said intermittently driven feed means, said first straightener being operable continuously at a controlled speed maintaining said loop at a substantially constant size.
Claim 18
Dependent Claim
45 words
In a hot machine system as set forth in claim 15, wherein said first straightener includes a sensor to determine the size of said loop and control the speed of operation of said first straightener to maintain the size of said loop within predetermined limits.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |