US3892154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural steel punch
Assignee: Individual
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Filing: 1973-12-12
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Granted: 1975-07-01
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Expires: 1993-12-12
Abstract
Abstract A structural steel beam punching apparatus comprising a frame disposed in a generally vertical plane intersecting the horizontal travel path of a structural workpiece to be punched. An aperture in the frame surrounds the travel path. Oppositely disposed punch head means overlying opposing vertical surfaces of the workpiece are slidably supported by the frame for movement toward and away from each other in a plane normal to the workpiece travel path. A pressure head means is connected with punches guided by the punch heads and slidably supported by the frame for movement toward and away from punch heads for and punching holes in the workpiece.
Inventors
- 👤 Marcus L Duffy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:09
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/243; B26; B26D; B26D5/00; B26D5/08; B26D5/12; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/38; Y10T408/3811; Y10T83/00; Y10T83/444; Y10T83/4463; Y10T83/4475; Y10T83/525; Y10T83/538; Y10T83/541; Y10T83/544; Y10T83/869; Y10T83/8742; Y10T83/8743; Y10T83/8821; Y10T83/8858
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
408 words
An apparatus for punching the flanges of an elongated structural I-beam having its web horizontally disposed and being arranged for movement lengthwise in a horizontal travel path, comprising: means defining a punching station including a main frame having side wall surfaces normal to the travel path and having a top and a bottom edge surface, said frame extending transversely of the travel path and having a transverse aperture characterized by an intermediate throat portion partially describing and surrounding an intermediate portion of an I-beam workpiece, said frame having a through slot extending between its top and bottom edge surfaces and between its side wall surfaces in intersecting relation with respect to one end portion of the transverse aperture and an adjacent portion of the aperture throat; first and second punch head means slidably supported by said frame within the through slot for vertical movement toward and away from each other in a plane normal to the travel path, said first and second punch head means comprising, a U-shaped punch head body with the legs defining the respective U-shape projecting toward each other on opposite sides of the horizontal plane of the I-beam web and being respectively disposed on opposite sides of the I-beam flange to be punched, one leg of each U-shaped punch head being slidably supported, against movement in the same plane in a direction away from the other leg of the respective U-shape, by that portion of the through slot intersecting the aperture throat forming portion of said frame, and a gauge rod adjustablY connected to and movable with each said punch head body; punch assembly means including a punch die supported by the end portion of the leg of each said first and second punch head means disposed adjacent the web of an I-beam workpiece, one end of said gauge rod projecting toward the adjacent surface of an I-beam web disposed in the travel path for disposing the respective punch die a predetermined distance from a plane defining the web center of an I-beam workpiece, said frame having a transverse slot in one end intersecting the through slot; pressure head means slidably supported by said frame within the transverse slot for horizontal movement in a direction transverse to the travel path toward and away from said punch head means; means for vertically moving said first and second punch head means toward and away from each other; and, means for horizontally moving said pressure head means.
Claim 2
Independent Claim
408 words
An apparatus for punching the flanges of an elongated structural I-beam having its web horizontally disposed and being arranged for movement lengthwise in a horizontal travel path, comprising: means defining a punching station including a main frame having side wall surfaces normal to the travel path and having a top and a bottom edge surface, said frame extending transversely of the travel path and having a transverse aperture characterized by an intermediate throat portion partially describing and surrounding an intermediate portion of an I-beam workpiece, said frame having a through slot extending between its top and bottom edge surfaces and between its side wall surfaces in intersecting relation with respect to one end portion of the transverse aperture and an adjacent portion of the aperture throat; first and second punch head means slidably supported by said frame within the through slot for vertical movement toward and away from each other in a plane normal to the travel path, said first and second punch head means comprising, a U-shaped punch head body with the legs defining the respective U-shape projecting toward each other on opposite sides of the horizontal plane of the I-beam web and being respectively disposed on opposite sides of the I-beam flange to be punched, one leg of each U-shaped punch head being slidably supported, against movement in the same plane in a direction away from the other leg of the respective U-shape, by that portion of the through slot intersecting the aperture throat forming portion of said frame, and a gauge rod adjustablY connected to and movable with each said punch head body; punch assembly means including a punch die supported by the end portion of the leg of each said first and second punch head means disposed adjacent the web of an I-beam workpiece, one end of said gauge rod projecting toward the adjacent surface of an I-beam web disposed in the travel path for disposing the respective punch die a predetermined distance from a plane defining the web center of an I-beam workpiece, said frame having a transverse slot in one end intersecting the through slot; pressure head means slidably supported by said frame within the transverse slot for horizontal movement in a direction transverse to the travel path toward and away from said punch head means; means for vertically moving said first and second punch head means toward and away from each other; and, means for horizontally moving said pressure head means.
Claim 3
Dependent Claim
62 words
The apparatus according to claim 1 in which said punch assembly means further includes: a punch slidably supported by said other leg of each said punch head body coaxial with respect to the respective punch die for movement toward and away from the respective said punch die in response to movement of said pressure head toward and away from the travel path.
Claim 4
Dependent Claim
69 words
The apparatus according to claim 2 in which said pressure head is provided with a T-shaped slot in its end portion facing the travel path for slidably receiving the adjacent end portion of the respective said punch and permitting movement of said punches into and out of the T-shaped slot in response to movement of said first and second punch head means toward and away from the travel path.
Claim 5
Dependent Claim
40 words
The apparatus according to claim 3 in which said vertically moving means includes: a pair of fluid operated cylinders respectively connected with said frame, said pair of cylinders each having a piston respectively connected with each said punch head body.
Claim 6
Dependent Claim
35 words
The apparatus according to claim 4 in which said horizontally moving means includes: a fluid operated main cylinder connected with said frame and having a piston connected with said pressure head opposite its T-shaped slot.
Claim 7
Dependent Claim
96 words
The apparatus according to claim 5 and further including: control means for operating said pair of cylinders and said main cylinder in a predetermined sequence, said control means including a plurality of solenoid operated valves individually connecting a source of fluid under pressure with each said cylinder; an electrical circuit connecting a source of electrical energy with the solenoids of said valves; and, a plurality of limit switches interposed in said circuit and being opened and closed by the respective direction of movement of said first and second punch head means and said pressure head 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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |