US3633447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting apparatus
Assignee: Individual
•
Filing: 1969-08-06
•
Granted: 1972-01-11
•
Expires: 1989-08-06
Abstract
Abstract Apparatus for cutting sheets of metal including a vertically extending framework having a continuous chain extending over a plurality of sprockets and secured to a cutting element for driving the cutting element in a horizontal path along the length of the framework. Brackets are provided on the framework in a horizontal plane immediately beneath the cutting member for supporting a sheet of metal to be cut along a line across the sheet. One of the sprockets over which the chain is passed is driven by a belt drive from a motor mounted on the framework, such motor being reversible, and being connected in an electrical circuit which includes switches suitable for energizing, deenergizing and reversing the motor. The cutting element employed is a disk of hard metal carried at the outer end of a lever arm which is pivoted about a horizontal axis to raise or lower the disk. A spring element tending to raise the arm from its cutting position is opposed by a threaded shaft which can be directed against a second arm connected to the lever arm carrying the disk to force the disk against the top of a sheet of metal to be cut.
Inventors
- 👤 Darrell F Casida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:19
CPC Classifications
B; B23; B23D; B23D19/00; B23D19/02; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0333; Y10T83/0348; Y10T83/768; Y10T83/7684; Y10T83/7722; Y10T83/7726; Y10T83/7755; Y10T83/7759; Y10T83/7763; Y10T83/7776; Y10T83/7863; Y10T83/869; Y10T83/8769
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
330 words
A cutting apparatus comprising: a framework including: a main beam extending from one end of the framework to the other; workpiece supporting braces extending horizontally from the main beam on opposite sides thereof; and an intermediate beam extending substantially parallel to, and spaced vertically from the main beam; a plurality of sprockets rotatably mounted on the framework; a reversible motor mounted on the framework and drivingly connected to one of said sprockets; a chain paSsed over such sprockets in engagement therewith; a cutting element, including: a carriage movably connected to the intermediate beam, having a portion thereof connected to the opposite ends of the chain and horizontally reciprocated thereby on the intermediate beam; a shaft journaly supported on the carriage; a pair of lever arms, one end of each lever arm connected to one end of the shaft, the pair of lever arms being journaly supported on the carriage via the shaft; a disc-shaped cutting wheel rotatably mounted between the lever arms; an actuating arm secured to the shaft, the actuating arm pivotally journaling the pair of lever arms to adjustably raise and lower the cutting wheel; a spring having one end connected to the carriage and the opposite end thereof connected to the actuating arm to draw the actuating arm upwardly to bias the cutting wheel from a cutting status; and an adjustment screw means adjustably connected to the carriage and having one end thereof engaging the actuating arm to adjustably force the actuating arm downwardly in one adjusted position of the adjustment screw means to force the cutting wheel into a cutting status; and electrical circuit means connected to said motor and responsive to reciprocation of said cutting element on the framework to reverse the direction of rotation of said motor when said cutting element is reciprocated to one side of the framework, and to terminate rotation of said motor in at least one direction when said cutting element is reciprocated to the opposite side of the framework.
Claim 2
Dependent Claim
330 words
A cutting apparatus comprising: a framework including: a main beam extending from one end of the framework to the other; workpiece supporting braces extending horizontally from the main beam on opposite sides thereof; and an intermediate beam extending substantially parallel to, and spaced vertically from the main beam; a plurality of sprockets rotatably mounted on the framework; a reversible motor mounted on the framework and drivingly connected to one of said sprockets; a chain paSsed over such sprockets in engagement therewith; a cutting element, including: a carriage movably connected to the intermediate beam, having a portion thereof connected to the opposite ends of the chain and horizontally reciprocated thereby on the intermediate beam; a shaft journaly supported on the carriage; a pair of lever arms, one end of each lever arm connected to one end of the shaft, the pair of lever arms being journaly supported on the carriage via the shaft; a disc-shaped cutting wheel rotatably mounted between the lever arms; an actuating arm secured to the shaft, the actuating arm pivotally journaling the pair of lever arms to adjustably raise and lower the cutting wheel; a spring having one end connected to the carriage and the opposite end thereof connected to the actuating arm to draw the actuating arm upwardly to bias the cutting wheel from a cutting status; and an adjustment screw means adjustably connected to the carriage and having one end thereof engaging the actuating arm to adjustably force the actuating arm downwardly in one adjusted position of the adjustment screw means to force the cutting wheel into a cutting status; and electrical circuit means connected to said motor and responsive to reciprocation of said cutting element on the framework to reverse the direction of rotation of said motor when said cutting element is reciprocated to one side of the framework, and to terminate rotation of said motor in at least one direction when said cutting element is reciprocated to the opposite side of the framework.
Claim 3
Dependent Claim
34 words
A cutting apparatus as defined in claim 1 and further characterized to include: a drive belt drivingly connected to said electric motor; and speed-reduction gearing connected between said drive belt and said one sprocket.
Claim 4
Dependent Claim
114 words
A cutting apparatus as defined in claim 1 wherein said framework further includes: a first pair of vertically extending stanchions at one end of said framework, said first pair of stanchions journaling a pair of said sprockets in vertically spaced relation to each other, and secured to one end of said main beam; and a second pair of vertically extending stanchions at the end of said framework opposite said first-mentioned end thereof, said second pair of stanchions journaling a second pair of said sprockets in vertically spaced relation to each other, and secured to the opposite end of said main beam from that which is secured to said first pair of vertically extending stanchions.
Claim 5
Dependent Claim
39 words
A cutting apparatus as defined in claim 1 wherein the carriage is further defined to include: a pair of horizontally spaced, vertically extending flanges; and a horizontal web flange secured between the lower edges of said vertically extending flanges.
Claim 6
Dependent Claim
63 words
A cutting apparatus as defined in claim 4 wherein said framework further includes an intermediate beam extending substantially parallel to, and spaced vertically from said main frame, and being secured at its opposite ends to said first and second pairs of vertically extending stanchions, said intermediate beam extending between said vertically extending flanges for guiding said cutting element in its horizontal reciprocating movement.
References Cited (Backward Citations)
GB619648A
Cited
US2374281A
Cited
US2378428A
Cited
US2610688A
Cited
US2605840A
Cited
US2823749A
Cited
US3146926A
Cited
US3181406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |