US3909909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Harmonic press and method of forging
Assignee: Ltv Steel Co Inc
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Filing: 1973-10-04
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Granted: 1975-10-07
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Expires: 1993-10-04
Abstract
Abstract Disclosure of a method and apparatus for forming metal products from scrap or other small pieces. Pieces of scrap metal are bonded together by baling into bales of from 20% to 50% metal by volume. The bales are then heated from 1200*F. to 2350*F. and fed through a feed magazine into a harmonic impacting press. Deformation of bales prior to reaching the impacting station in the harmonic press is controlled by control of the press and by peripheral confinement of the bales prior to being fed into the impacting station in the press. There is also a disclosure of a means to fuse bales together through use of a thermal powder.
Inventors
- 👤 Mark E Whalen
- 👤 Joseph W Malleck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:24
CPC Classifications
B; B22; B22F; B22F8/00; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
144 words
The method of forging a workpiece with a press of the harmonic type having opposed platens mounted on eccentrics for relative movement comprising: a. positioning a workpiece for travel along a feed path between said platens; b. constraining the platens for movement such that any point on each of said platens transcribes an initial forging path which is substantially reciprocal and transverse to said feed path; c. feeding a leading end of said workpiece along said feed path and between said platens to commence a forging compaction of said workpiece; d. thereafter changing the constraint on said platens such that each such point traverses another foring path having workpiece feed motion paralleling said feed path such that the press self feeds the workpiece as it is forged; and, e. perimetrically confining the workpiece at a location along said feed path and near said platens.
Claim 2
Independent Claim
144 words
The method of forging a workpiece with a press of the harmonic type having opposed platens mounted on eccentrics for relative movement comprising: a. positioning a workpiece for travel along a feed path between said platens; b. constraining the platens for movement such that any point on each of said platens transcribes an initial forging path which is substantially reciprocal and transverse to said feed path; c. feeding a leading end of said workpiece along said feed path and between said platens to commence a forging compaction of said workpiece; d. thereafter changing the constraint on said platens such that each such point traverses another foring path having workpiece feed motion paralleling said feed path such that the press self feeds the workpiece as it is forged; and, e. perimetrically confining the workpiece at a location along said feed path and near said platens.
Claim 3
Dependent Claim
25 words
The method of claim 1 wherein said another forging path is substantially elliptical having a major axis which extends longitudinally relative to said feed path.
Claim 4
Dependent Claim
24 words
The method of claim 1 wherein the change to said another forging path is effected by adjusting adjustable link means connected to said platens.
Claim 5
Dependent Claim
36 words
The method of claim 3 wherein said link means includes a separate adjustable linkage connected to each of said platens, and said step of adjusting said link means is effected by adjusting said linkages in synchronism.
Claim 6
Dependent Claim
53 words
The method of claim 1 wherein each of said platens has a forward initial engagement portion, a central serrated feed portion and a trailing smoothing portion, and wherein said step of changing the constraint on said platens is effected after the leading surface of a workpiece has been fed betweem said central portions.
Claim 7
Dependent Claim
31 words
The method of claim 1 wherein said step of perimetrically confining the workpiece is effected with members that surround the workpiece in at least one plane transverse to said feed path.
Claim 8
Dependent Claim
29 words
The method of claim 6 wherein said members are tapered inwardly at angles of 5* to 15* relative to said feed path to funnel workpieces along said feed path.
Claim 9
Dependent Claim
26 words
The method of claim 6 wherein said members are reciprocated along paths transverse to said feed path as a workpiece is fed along said feed path.
Claim 10
Dependent Claim
122 words
The method of claim 1 wherein the workpiece is formed from a plurality of bales and the bales are fed to the press by a process including the steps of: a. depositing bales in an elongated magazine; b. feeding the bales along a path of travel in said magazine toward said press by pressing the bales with a ram and thus feeding a lead one of the bale into said press; c. cyclically replenishing the supply of bales in the magazine be retracting said ram and depositing a further bale between the ram and the bales previously in the magazine; and, d. thereafter advancing the ram to press the further bale against the previous bales and recommence the pressing of the bales.
Claim 11
Dependent Claim
88 words
The pRocess of claim 9 wherein said cyclic bale replenishment is coordinated with forging of the bales in said press such that said further bale is added to the magazine at a time shortly after a lead one of said bales has commenced a self feed portion of a forging cycle in said press and such that said further bale has been added to the magazine and bale feeding recommenced prior to the time the next bale after said lead bale has begun to feed into said press.
Claim 12
Dependent Claim
137 words
In combination with a harmonic press of the type having opposed platens mounting on eccentrics for relative movement and means for constraining platen movement to cause any point on the platen to transcribe an initial forging path which is substantially reciprocal and transverse to the path of travel of a workpiece through the press, and to subsequently cause such point to transverse another path such that the press self feeds the workpiece as it is forged, a feed magazine for supply workpiece bales to said press comprising: a. a bale supporting structure defining a guide path for a plurality of such bales; b. a structure extending along said guide path for confining said bales and inhibiting lateral expansion of said bales on application of compressive forces; and, c. ram means for forcing bales along said guide path.
Claim 13
Dependent Claim
137 words
In combination with a harmonic press of the type having opposed platens mounting on eccentrics for relative movement and means for constraining platen movement to cause any point on the platen to transcribe an initial forging path which is substantially reciprocal and transverse to the path of travel of a workpiece through the press, and to subsequently cause such point to transverse another path such that the press self feeds the workpiece as it is forged, a feed magazine for supply workpiece bales to said press comprising: a. a bale supporting structure defining a guide path for a plurality of such bales; b. a structure extending along said guide path for confining said bales and inhibiting lateral expansion of said bales on application of compressive forces; and, c. ram means for forcing bales along said guide path.
Claim 14
Dependent Claim
36 words
The feed magazine of claim 11 wherein said ram means is reciprocal along said guide path and retractable to a bale load position and wherein said structure defines a bale load opening for depositing further bales.
Claim 15
Dependent Claim
12 words
The apparatus of claim 11 wherein said structure defines a load opening.
Claim 16
Dependent Claim
30 words
The apparatus of claim 13 wherein said ram means is reciprocal along said guide path and retractable to a bale load position exposing said load opening for depositing further bales.
Claim 17
Dependent Claim
25 words
The feed magazine of claim 13 wherein said ram means and said structure define complemental land and groove formations extending longitudinally of said guide path.
Claim 18
Dependent Claim
153 words
A harmonic press for forging a workpiece, comprising: a. feeding means for feeding a workpiece along a feed path; b. opposed platen means positioned on opposite sides of said feed path to forge a workpiece engaged between said platens; c. linkage means constraining said platen means for movement such that any point on said platen means transcribes an initial forging path which is substantially reciprocal and transverse to said feed path; d. said linkage means being adjustable after a leading end of a workpiece has been fed along said feed path between said platen means to commence a forging operation such that each point on said platen means transverses another forging path having a workpiece feed motion paralleling said feed path to enable the press to self feed the workpiece as it is forged; and, e. constraint means perimetrically confining the workpiece at a location along said feed path near said platen means.
Claim 19
Dependent Claim
153 words
A harmonic press for forging a workpiece, comprising: a. feeding means for feeding a workpiece along a feed path; b. opposed platen means positioned on opposite sides of said feed path to forge a workpiece engaged between said platens; c. linkage means constraining said platen means for movement such that any point on said platen means transcribes an initial forging path which is substantially reciprocal and transverse to said feed path; d. said linkage means being adjustable after a leading end of a workpiece has been fed along said feed path between said platen means to commence a forging operation such that each point on said platen means transverses another forging path having a workpiece feed motion paralleling said feed path to enable the press to self feed the workpiece as it is forged; and, e. constraint means perimetrically confining the workpiece at a location along said feed path near said platen 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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |