Patent US3817067A successfully refreshed from Google Patents.
US3817067A
Expired / Lapsed
US
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Stock supply system
Assignee: Nidec Minster Corp
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Filing: 1972-09-05
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Granted: 1974-06-18
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Expires: 1992-09-05
Abstract
Abstract A stock supply system, especially for supplying strip stock from a supply thereof to a feed device pertaining to a machine in which the supply system includes a straightening roller stand driven by a variable speed drive and with an arrangement provided for maintaining a loop in the stock being supplied between the straightening roller stand and the feed device. The feed device operates intermittently to supply the stock to a machine and the machine supplies a signal on each cycle that tends to increase the speed of the variable speed drive. A feedback signal tends to reduce the speed of the variable speed drive thereby tending to maintain the aforementioned stock loop at about a fixed size. When the loop exceeds a certain length, the speed of the drive is reduced, and if the loop shortens beyond a predetermined amount, the machine being fed and the feed device and the roller stand come to a halt.
Inventors
- 👤 J Voorehes
- 👤 R Carabbio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:03
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/18; B21; B21C; B21C49/00; B21D; B21D43/00; B21D43/02; B21D43/021; B21D43/022; B65H20/00; B65H20/24; B65H2403/00; B65H2403/70; B65H2403/72
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
252 words
In a stock supply system, especially for the high speed advancing of strip stock from a supply thereof toward a feed device for a machine having a work cycle, the feed device having a feed period and a dWell period for each machine cycle for intermittent movement of the stock into the machine; first means adapted for engaging the stock to effect continuous movement of the stock from the supply thereof toward the feed device, a continuously adjustable speed drive drivingly connected to said first means, signal operated means connected in speed controlling relation to said drive, first control means operable when actuated to supply speed increasing signals to said signal operated means and actuated once for each feed period of the feed device, second control means operable when actuated to supply speed decreasing signals to said signal operated means and actuated by said drive in conformity with the speed thereof, receiving means disposed between said first means and the feed device having inlet and outlet means through which said strip stock passes and including wall means for confining a captive supply loop in the strip stock being supplied between said feed means and said feed device, and detector means in said receiving means connected in controlling relation to said drive and operable when actuated to reduce the speed of said drive, said detector means being disposed for actuation by the captive supply loop in the stock in said receiving means when the loop exceeds a predetermined length in said receiving means.
Claim 2
Dependent Claim
252 words
In a stock supply system, especially for the high speed advancing of strip stock from a supply thereof toward a feed device for a machine having a work cycle, the feed device having a feed period and a dWell period for each machine cycle for intermittent movement of the stock into the machine; first means adapted for engaging the stock to effect continuous movement of the stock from the supply thereof toward the feed device, a continuously adjustable speed drive drivingly connected to said first means, signal operated means connected in speed controlling relation to said drive, first control means operable when actuated to supply speed increasing signals to said signal operated means and actuated once for each feed period of the feed device, second control means operable when actuated to supply speed decreasing signals to said signal operated means and actuated by said drive in conformity with the speed thereof, receiving means disposed between said first means and the feed device having inlet and outlet means through which said strip stock passes and including wall means for confining a captive supply loop in the strip stock being supplied between said feed means and said feed device, and detector means in said receiving means connected in controlling relation to said drive and operable when actuated to reduce the speed of said drive, said detector means being disposed for actuation by the captive supply loop in the stock in said receiving means when the loop exceeds a predetermined length in said receiving means.
Claim 3
Dependent Claim
31 words
A stock supply system according to claim 1 in which said first means comprises a straightening roller stand having stock feed rolls and said drive is connected to said feed rolls.
Claim 4
Dependent Claim
29 words
A stock supply system according to claim 1 in which said drive comprises a motor and variable clutch driven thereby, said control means being operable to vary said clutch.
Claim 5
Dependent Claim
70 words
A stock supply system according to claim 1 in which said first means comprises feed rolls adapted to receive the stock therebetween, said drive comprising a motor and an eddy current clutch connecting the motor to the feed rolls, said signal operated means comprising a variable source of energy connected to said clutch and supplying energy to the clutch control winding in conformity with control signals supplied to said source.
Claim 6
Dependent Claim
44 words
A stock supply system according to claim 4 which includes a register connected to said variable source to supply control signals thereto, said register having an upcounting terminal connected to said first control means and a downcounting terminal connected to said second control means.
Claim 7
Dependent Claim
24 words
A stock supply system according to claim 5 which includes means for predetermining the signal supplied by said first control means to said register.
Claim 8
Dependent Claim
85 words
A stock supply system according to claim 5 in which the stock has a supply loop therein between said feed rolls and said feed device, detector means adapted to be actuated by the stock loop when the loop exceeds a predetermined length, and means operable during actuation of said detector means for interrupting the signal from said first control means to said register whereby the signals from said second control means causes reduction in the speed of said feed rolls and shortening of the loop.
Claim 9
Dependent Claim
246 words
A stock supply system according to claim 1 in which said first means comprises feed rolls adapted to receive the stock therebetween, said drive comprising a motor and an eddy current clutch connecting the motor to the feed rolls, said signal operated means comprising a variable source of energy connected to te control winding of said clutch and supplying energy to the clutch in conformity with control signals supplied to said source, a register connected to said variable source to supply control signals thereto, said register having an upcounting terminal connected to said first control means and a downcounting terminal connected to said second control means, said first control means comprising a switch arranged to be actuated once for each feed period of said feed device, an adjustable counter having an output terminal connected to the upcounting terminal of said register and also having a control terminal, said switch when actuated suPplying a signal to said control terminal to cause the count set in said counter to be released to said output terminal, said second control means comprising a pulse generator driven by said drive and connected to said downcounting terminal of said register, a supply loop in the stock between said feed rolls and the feed device and detector means positioned to be actuated in response to the loop exceeding a predetermined length, and means responsive to actuation of said detector means for preventing the supply of signals to said upcounting terminal of said register.
Claim 10
Dependent Claim
69 words
A stock supply system according to claim 1 in which said receiving means comprises a chamber having a first opening on one side to receive the stock from said straightening roller stand and a second opening on the other side to discharge the stock to said feed device, and guide means in said chamber guiding the stock passing therethrough in a curvilinear path which includes at least one loop.
Claim 11
Dependent Claim
23 words
A stock supply system according to claim 9 which includes detector means adapted for actuation upon the loop reaching a predetermined minimum length.
Claim 12
Dependent Claim
30 words
A stock supply system according to claim 9 in which said guide means includes plate elements disposed on opposite sides of the path taken by said stock in said chamber.
Claim 13
Dependent Claim
23 words
A stock supply system according to claim 11 in which at least portions of at least some of said plate elements are flexible.
Claim 14
Dependent Claim
17 words
A stock supply system according to claim 9 in which said detector means comprises a lamp-photocell combination.
Claim 15
Dependent Claim
183 words
In combination; a press, a feed device for feeding stock intermittently into the press and driven by the press, a straightening roller stand adapted to withdraw stock from a supply thereof and advance the stock continuously toward the feed device, the stock having a confined captive supply loop therein between said straightening roller stand and said feed device, an infinitely variable speed drive connected to said straightening roller stand, a signal operated controller connected to said drive to vary the speed thereof, means operated by the press on each cycle thereof for supplying sped increasing signals to said controller, means operated in synchronism with said straightening roller stand for supplying speed reducing signals to said controller, a first detector adjacent said captive supply loop actuated in response to the said loop exceeding a predetermined maximum length for interrupting the signals from said press operated means to said controller, and a second detector adjacent said captive supply loop actuated in response to the said loop reducing to below a predetermined minimum length and adapted for interrupting operation of said press and straightening roller stand.
Claim 16
Dependent Claim
183 words
In combination; a press, a feed device for feeding stock intermittently into the press and driven by the press, a straightening roller stand adapted to withdraw stock from a supply thereof and advance the stock continuously toward the feed device, the stock having a confined captive supply loop therein between said straightening roller stand and said feed device, an infinitely variable speed drive connected to said straightening roller stand, a signal operated controller connected to said drive to vary the speed thereof, means operated by the press on each cycle thereof for supplying sped increasing signals to said controller, means operated in synchronism with said straightening roller stand for supplying speed reducing signals to said controller, a first detector adjacent said captive supply loop actuated in response to the said loop exceeding a predetermined maximum length for interrupting the signals from said press operated means to said controller, and a second detector adjacent said captive supply loop actuated in response to the said loop reducing to below a predetermined minimum length and adapted for interrupting operation of said press and straightening roller stand.
Claim 17
Dependent Claim
169 words
In a stock supply system, especially for the high speed continuous advancing of strip stock from a supply thereof toward a feed device for a machine having a work cycle, the feed device having a feed period and a dwell period for each machine cycle; first means adapted for engaging said stock to move the stock from the supply thereof toward the feed device, an infinitely variable speed drive drivingly connected to said first means, signal operated means connected in speed controlling relation to said drive, receiving means disposed between said first means and the feed device and including means for receiving and confining a captive supply loop in the stock being supplied, and detector means in said receiving means connected in controlling relation to said drive operable when actuated to control the speed of said drive, said detector means being located for actuation by the captive supply loop in the stock and controlling said drive so as to maintain the length of said captive loop between predetermined limits.
Claim 18
Dependent Claim
169 words
In a stock supply system, especially for the high speed continuous advancing of strip stock from a supply thereof toward a feed device for a machine having a work cycle, the feed device having a feed period and a dwell period for each machine cycle; first means adapted for engaging said stock to move the stock from the supply thereof toward the feed device, an infinitely variable speed drive drivingly connected to said first means, signal operated means connected in speed controlling relation to said drive, receiving means disposed between said first means and the feed device and including means for receiving and confining a captive supply loop in the stock being supplied, and detector means in said receiving means connected in controlling relation to said drive operable when actuated to control the speed of said drive, said detector means being located for actuation by the captive supply loop in the stock and controlling said drive so as to maintain the length of said captive loop between predetermined limits.
Claim 19
Dependent Claim
37 words
A stock supply system according to claim 1 in which said signal operated means includes a register having an upcounting terminal connected to said first control means and a downcounting terminal connected to said second control means.
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |