US3237785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charging apparatus for shaft furnaces
Assignee: Ashmore Benson Pease and Co Ltd
•
Filing: 1961-09-26
•
Granted: 1966-03-01
•
Expires: 1981-09-26
Abstract
No abstract record available.
Inventors
- 👤 Holmes Frank Richmond
- 👤 Stoddart Armstrong Lincoln
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:45
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/18; G; G01; G01G; G01G19/00; G01G19/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
APPARATUS FOR CHARGING A BLAST FURNACE, COMPRISING A SKIP, A SKIP HOIST FOR HOISTING SAID SKIP, MEANS FOR AUTOMATICALLY FEEDING TO SAID SKIP PREDETERMINED QUANTITES OF COKE, A FIRST BIN FOR RECEIVING A SUPPLY OF ORE, A CHECK WEIGHT HOPPER, A DISCHARGE GATE FOR SAID HOPPER AND LEADING TO SAID SKIP, MEANS FOR WITHDRAWING ORE FROM SAID FIRST BIN AND DELIVERING IT SAID HOPPER, WEIGHTING MEANS RESPONSIVE TO WITHDRAWAL OF A PRESELECTED QUANTITY OF ORE FROM SAID FIRST BIN FOR AUTOMATICALLY CONTROLLING THE STOPPING OF SAID WITHDRAWAL MEANS, A SECOND BIN FOR RECEIVING A SUPPLY OF FLUX, MEANS FOR WITHDRAWING FLUX FROM SAID SECOND BIN AND FEEDING IT TO SAID HOPPER, A SECOND WEIGHING MEANS RESPONSIVE TO WITHDRAWL OF A PRE-SELECTED QUANTITY OF FLUX FROM SAID SECOND BIN FOR AUTOMATICALLY CONTROLLING THE STOPPING OF SAID SECOND WITHDRAWAL MEANS, AND CONTROL MEANS FOR AUTOMATICALLY STARTING AND STOPPING SAID FEEDING MEANS AND FOR AUTOMATICALLY STARTING SAID FIRST AND SECOND WITHDRAWAL MEANS SINGLY AND IN COMBINATION IN A PREDETERMINED SEQUENCE PROGRAMME AND FOR AUTOMATICALLY CONTROLLING SAID GATE AND FOR AUTOMATICALLY INITIATING SUCCESSIVE OPERATIONS OF SAID SKIP HOIST UPON COMPLETION OF EACH SEQUENCE IN SAID PROGRAMME.
Claim 2
Dependent Claim
192 words
APPARATUS FOR CHARGING A BLAST FURNACE, COMPRISING A SKIP, A SKIP HOIST FOR HOISTING SAID SKIP, MEANS FOR AUTOMATICALLY FEEDING TO SAID SKIP PREDETERMINED QUANTITES OF COKE, A FIRST BIN FOR RECEIVING A SUPPLY OF ORE, A CHECK WEIGHT HOPPER, A DISCHARGE GATE FOR SAID HOPPER AND LEADING TO SAID SKIP, MEANS FOR WITHDRAWING ORE FROM SAID FIRST BIN AND DELIVERING IT SAID HOPPER, WEIGHTING MEANS RESPONSIVE TO WITHDRAWAL OF A PRESELECTED QUANTITY OF ORE FROM SAID FIRST BIN FOR AUTOMATICALLY CONTROLLING THE STOPPING OF SAID WITHDRAWAL MEANS, A SECOND BIN FOR RECEIVING A SUPPLY OF FLUX, MEANS FOR WITHDRAWING FLUX FROM SAID SECOND BIN AND FEEDING IT TO SAID HOPPER, A SECOND WEIGHING MEANS RESPONSIVE TO WITHDRAWL OF A PRE-SELECTED QUANTITY OF FLUX FROM SAID SECOND BIN FOR AUTOMATICALLY CONTROLLING THE STOPPING OF SAID SECOND WITHDRAWAL MEANS, AND CONTROL MEANS FOR AUTOMATICALLY STARTING AND STOPPING SAID FEEDING MEANS AND FOR AUTOMATICALLY STARTING SAID FIRST AND SECOND WITHDRAWAL MEANS SINGLY AND IN COMBINATION IN A PREDETERMINED SEQUENCE PROGRAMME AND FOR AUTOMATICALLY CONTROLLING SAID GATE AND FOR AUTOMATICALLY INITIATING SUCCESSIVE OPERATIONS OF SAID SKIP HOIST UPON COMPLETION OF EACH SEQUENCE IN SAID PROGRAMME.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |