US3853029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turret punching machines
Assignee: PIERCE ALL Manufacturing Ltd
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Filing: 1973-08-06
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Granted: 1974-12-10
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Expires: 1993-08-06
Abstract
Abstract A turret punching machine has a frame consisting of spaced upper and lower limbs extending at right angles to the front edge of the machine, a spindle carrying a rotatable upper turret supported by the upper limb and being axially displaceable against a resilient force biassing it in the reverse direction, a ram mounted in the frame for axial movement and a rotatable lower turret the arrangement being such that the path of movement of the periphery of the turrets lies adjacent the front edge of the machine and that the punches carried by the upper turret during rotation of the turret move in succession below the ram which is disposed coaxially with and above an extreme laterally disposed punch station when viewed from the front of the machine.
Inventors
- 👤 S Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:44
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/12; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/37; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/215; Y10T83/2155; Y10T83/2159; Y10T83/869; Y10T83/8727; Y10T83/8732; Y10T83/8776; Y10T83/8785; Y10T83/929; Y10T83/9457; Y10T83/9473; Y10T83/9483
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
130 words
A turret punching machine having a main frame extending substantially at right angles to the front edge of the machine and formed with spaced upper and lower limbs, a spindle carrying a rotatable upper turret supported by the upper limb of the frame and a ram mounted in the frame for axial movement, the said turret and ram being so constructed and mutually disposed that the path of movement of the periphery of the turret lies at or adjacent the front edge of the machine, that the punches carried by the turret move in succession below the ram during rotation of the turret and that the ram is disposed coaxially with and above an extreme laterally disposed punch station of the turret when viewed from the front of the machine.
Claim 2
Dependent Claim
130 words
A turret punching machine having a main frame extending substantially at right angles to the front edge of the machine and formed with spaced upper and lower limbs, a spindle carrying a rotatable upper turret supported by the upper limb of the frame and a ram mounted in the frame for axial movement, the said turret and ram being so constructed and mutually disposed that the path of movement of the periphery of the turret lies at or adjacent the front edge of the machine, that the punches carried by the turret move in succession below the ram during rotation of the turret and that the ram is disposed coaxially with and above an extreme laterally disposed punch station of the turret when viewed from the front of the machine.
Claim 3
Dependent Claim
22 words
A machine according to claim 1 wherein a work table adapted for template duplication extends from side to side of the machine.
Claim 4
Dependent Claim
43 words
A machine according to claim 1 wherein a second or lower turret, carrying dies complementary to the punches of the first turret, is rotatably supported by the lower limb of the frame and is rotated synchronously with the upper punch-carrying turret during indexing.
Claim 5
Dependent Claim
73 words
A machine according to claim 1 wherein the upper turret is secured to a spindle rotatably mounted in a supporting bracket through a bearing bush and wherein the spindle is axially displaced relatively to the bracket and is biassed into its uppermost position by a spring bearing against a stop on the upper end of the spindle and at its lower end against a thrust bearing mounted in a recess in the bracket.
Claim 6
Dependent Claim
52 words
A machine according to claim 4 employing axially moveable indexing system capable of moving and cooperating with the turret to allow axial movement of the turret whilst maintaining accurate radial register to maintain a concentric relationship of recesses in the upper and lower parts respectively and consequently maintaining punch and die alignment.
Claim 7
Dependent Claim
67 words
A machine according to claim 3 wherein the lower turret has a spindle mounted for rotation in a bracket through a bearing, the spindle being capable of slight axial movement relatively to the bracket and being biassed into its uppermost position by a spring (48) bearing against the lower face of the spindle and at its lower end supported through a thrust bearing by a piston member.
Claim 8
Dependent Claim
37 words
A machine according to claim 6 wherein the piston member is supported on a bearing ball held in a groove in the piston by an adjustable stud in threaded engagement with a plate secured to the bracket.
Claim 9
Dependent Claim
67 words
A machine according to claim 6 wherein the turrets are mounted in a main frame carrying a ram the centre line of which extends substantially at right angles to the front of the machine, the frame being formed with spaced upper and lower limbs to which are rigidly secured one or more mounting blocks which rigidly support the mounting brackets for the turrets and other mounting assemblies.
Claim 10
Dependent Claim
39 words
A machine according to claim 1 wherein the upper end of the spindle has a disc carrying a number of pins corresponding to the punches in the upper turret and wherein the Pins are positioned to operate a microswitch.
References Cited (Backward Citations)
US3165962A
Cited
US3745646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |