Patent US4023784A successfully refreshed from Google Patents.
US4023784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for feeding metal scrap into molten metal
Assignee: Individual
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Filing: 1975-06-30
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Granted: 1977-05-17
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Expires: 1995-06-30
Abstract
Abstract Apparatus for feeding small pieces of metal scrap into a mold while molten metal of the same or similar analysis is being poured includes means for heating the scrap, a chute for feeding scrap to the mold and means for positively feeding the heated scrap at a controlled rate to the chute. Heated and clean scrap is thrown by a throwing machine at a controlled velocity through a closed chute into the mold. Means may be provided to change the angle of discharge of scrap into the mold. Scrap may be fed to the throwing machine from a vibratory feeder which controls the rate of feed and receives the scrap from a hopper. The vibratory feeder may be omitted and a plurality of compartments may be provided in the hopper. Individual control of flow of scrap from each compartment controls the rate of scrap feed. The velocity of the scrap is sufficient to enable it to penetrate into the molten metal.
Inventors
- 👤 Henry J. Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:58
CPC Classifications
B; B22; B22D; B22D27/00; B22D27/20; F; F27; F27D; F27D3/00; F27D3/0025; F27D3/0026; Y; Y10; Y10S; Y10S266/00; Y10S266/901
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
152 words
Apparatus for feeding small pieces of metal into a container while molten metal is being supplied to said container which comprises a supporting structure, a hopper for said pieces mounted on said supporting structure, a throwing mechanism for said pieces mounted on said supporting structure, a feeder mounted on said supporting structure below said hopper and above said throwing mechanism and adapted to receive said pieces from said hopper and feed them at a controlled rate to said throwing mechanism, and a chute closed around its periphery and adapted to receive said pieces from said throwing mechanism and feed them into said container, said chute comprising at its discharge end means for directing said pieces generally downwardly into said container, said pieces being fed to said container at a controlled rate and speed such that the velocity of said pieces is sufficient to enable penetration of the molten metal in said container.
Claim 2
Dependent Claim
152 words
Apparatus for feeding small pieces of metal into a container while molten metal is being supplied to said container which comprises a supporting structure, a hopper for said pieces mounted on said supporting structure, a throwing mechanism for said pieces mounted on said supporting structure, a feeder mounted on said supporting structure below said hopper and above said throwing mechanism and adapted to receive said pieces from said hopper and feed them at a controlled rate to said throwing mechanism, and a chute closed around its periphery and adapted to receive said pieces from said throwing mechanism and feed them into said container, said chute comprising at its discharge end means for directing said pieces generally downwardly into said container, said pieces being fed to said container at a controlled rate and speed such that the velocity of said pieces is sufficient to enable penetration of the molten metal in said container.
Claim 3
Dependent Claim
19 words
Apparatus according to claim 1 including means for varying the angle of discharge of said pieces from said chute.
Claim 4
Dependent Claim
30 words
Apparatus according to claim 1 including means for separating flow of said pieces in said chute into two streams, and means for varying the angle of discharge of said streams.
Claim 5
Dependent Claim
30 words
Apparatus according to claim 3 in which said small pieces are metal scrap and said apparatus includes means for heating said scrap prior to feeding it to said throwing mechanism.
Claim 6
Dependent Claim
13 words
Apparatus according to claim 1 in which said feeder is a vibratory feeder.
Claim 7
Dependent Claim
19 words
Apparatus according to claim 5 including means for varying the angle of discharge of said pieces from said chute.
Claim 8
Dependent Claim
30 words
Apparatus according to claim 5 including means for separating flow of said pieces in said chute into two streams, and means for varying the angle of discharge of said streams.
Claim 9
Dependent Claim
19 words
Apparatus according to claim 1 including means mounting said chute on said framework for movement about a vertical axis.
Claim 10
Dependent Claim
13 words
Apparatus according to claim 8 in which said feeder is a vibratory feeder.
Claim 11
Dependent Claim
19 words
Apparatus according to claim 9 including means for varying the angle of discharge of said pieces from said chute.
Claim 12
Dependent Claim
30 words
Apparatus according to claim 9 including means for separating flow of said pieces in said chute into two streams, and means for varying the angle of discharge of said streams.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |