US3774435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making bearings
Assignee: Federal Mogul Engineering Ltd
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Filing: 1972-07-20
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Granted: 1973-11-27
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Expires: 1992-07-20
Abstract
Abstract This invention is a machine and a method for forming part cylindrical half bearing shells from a continuous elongated strip of lined material in which the strip is moved forward into the press in steps and each movement of the press effects a number of different operations on blanks constituted by successive transverse lengths of the strip. In one pressing step a movement of a die perpendicular to the direction of stepping first severs a blank from the rest of the strip and then forms it to shape in a coining operation.
Inventors
- 👤 W Wales
- 👤 A Mccallum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:31
CPC Classifications
F; F16; F16C; F16C17/00; F16C17/02; B; B21; B21D; B21D53/00; B21D53/10; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/14; F16C41/00; F16C41/008; F16C2220/00; F16C2220/80; F16C2220/82; F16C2220/84; F16C2223/00; F16C2223/02; F16C2223/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49668; Y10T29/49671; Y10T29/49673; Y10T29/49675
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
151 words
A method of making bearings in which a strip of material is fed lengthwise into a press step by step, and the press is operated after each step to perform an operation on each of a number of different blanks constituting successive transverse lengths of said strip, one operation of the press constituting a movement of a first die to partially sever a bearing blank and partially deform said blank from the rest of the strip while leaving the partially severed and deformed blank attached to the rest of the strip by a local neck, and a succeeding operation constituting a single movement of a second die perpendicular to the general surface of the strip first to sever the neck to release the blank completely from the rest of the strip and second, in a later part of the movement of the die to form the completely-severed blank into part-cylindrical shape.
Claim 2
Independent Claim
151 words
A method of making bearings in which a strip of material is fed lengthwise into a press step by step, and the press is operated after each step to perform an operation on each of a number of different blanks constituting successive transverse lengths of said strip, one operation of the press constituting a movement of a first die to partially sever a bearing blank and partially deform said blank from the rest of the strip while leaving the partially severed and deformed blank attached to the rest of the strip by a local neck, and a succeeding operation constituting a single movement of a second die perpendicular to the general surface of the strip first to sever the neck to release the blank completely from the rest of the strip and second, in a later part of the movement of the die to form the completely-severed blank into part-cylindrical shape.
Claim 3
Dependent Claim
23 words
A method as claimed in claim 1 in which the severing of the neck is effected by an edge of the first die.
Claim 4
Dependent Claim
24 words
A method as claimed in claim 1 in which the successive operations on the strip are performed by side by side pairs of tools.
Claim 5
Dependent Claim
38 words
A method as claimed in claim 3 in which one tool of each pair of certain tools are mounted on a base and the others are mounted on a part which can move in relation to the base.
Claim 6
Dependent Claim
34 words
A method as claimed in claim 4 in which movement of the said part in relation to the base in the direction of pressing movement effects movement of components in the direction of stepping.
Claim 7
Dependent Claim
28 words
A method as claimed in claim 1 in which certain of the tools performing successive operations extend through different lengths in the direction of stepping of the strip.
Claim 8
Dependent Claim
37 words
A method as claimed in claim 1 in which the trailing edge of a severed blank is directly severed from the leading edge of a following blank so that no scrap slivers of strip material are formed.
Claim 9
Dependent Claim
130 words
A press for forming bearings from strip material including a number of pairs of forming tools situated side by side, one of the pairs comprising severing tools arranged for relative movement in one stroke of the press, arranged to partially sever and partially deform a bearing blank from the rest of the strip while leaving the partly severed blank attached to the rest of the strip by a local neck, and a succeeding pair of forming tools comprising a die and a blank arranged for relative movement in one stroke of the press first to sever the neck to release the partially severed blank completely from the rest of the strip and second in a later part of the said one stroke to form the severed blank into part-cylindrical shape.
Claim 10
Dependent Claim
130 words
A press for forming bearings from strip material including a number of pairs of forming tools situated side by side, one of the pairs comprising severing tools arranged for relative movement in one stroke of the press, arranged to partially sever and partially deform a bearing blank from the rest of the strip while leaving the partly severed blank attached to the rest of the strip by a local neck, and a succeeding pair of forming tools comprising a die and a blank arranged for relative movement in one stroke of the press first to sever the neck to release the partially severed blank completely from the rest of the strip and second in a later part of the said one stroke to form the severed blank into part-cylindrical shape.
Claim 11
Dependent Claim
32 words
A press as claimed in claim 8 including pairs of tools for performing each of the operations of chamfering, embossing, part-severing and grooving positioned upstream of the said one of the pairs.
Claim 12
Dependent Claim
56 words
A press as claimed in claim 8 in which one of the tools of the said one of the pairs is mounted on a base and other tools one from each of the other pairs are mounted on a part which can move in relation to the base perpendicular to the length of the strip material.
Claim 13
Dependent Claim
42 words
A press as claimed in claim 10 including a connection for effecting movement of a part of the press in the direction of the length of the strip material in consequence of movement of the moving part in relation to the base.
Claim 14
Dependent Claim
46 words
A press as claimed in claim 8 in which the components for severing a partly formed blank from the rest of the strip material comprise respectively the die and the shearing edge of a component which is positioned immediately on the inlet side of the die.
Claim 15
Dependent Claim
41 words
A press as claimed in claim 12 in which the bLock, the die and a pair of bearing end engaging surfaces act during forming of the severed blank to confine all the faces of the blank except the internal part-cylindrical surface.
References Cited (Backward Citations)
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US3262299A
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US3516137A
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US3545248A
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US3559263A
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US3675460A
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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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |