US3774491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal trimming facility
Assignee: Shaw Industries Group Inc
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Filing: 1971-06-28
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Granted: 1973-11-27
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Expires: 1991-06-28
Abstract
Abstract Two cutter assemblies are mounted on a screw drive shaft with right and left-hand threads. Rotation of the shaft will cause adjustment of the distance between the two cutter heads. The shaft assembly and cutter heads themselves are adjustable along the axis of the shaft. The assembly is capable of trimming a carpet to varied widths and of a shifting center line.
Inventors
- 👤 D Killilea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:49
CPC Classifications
D; D06; D06H; D06H7/00; D06H7/04; Y; Y10; Y10T; Y10T83/00; Y10T83/647; Y10T83/6584; Y10T83/6592; Y10T83/6595; Y10T83/6603; Y10T83/768; Y10T83/7809; Y10T83/7847
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
212 words
A trimmer apparatus fro trimming a sheet material which has a pattern printed thereon, the edge of the pattern not being in registry with the edge of the sheet material and the edge of the pattern being variable in its position relative to the edge of the sheet material, a shifter mechanism for two cutter heads to shift the cutter heads relative to each other to vary the distance therebetween, said shifter mechanism being a screw thread arrangement with right and left-hand screws on the ends thereof, said cutter heads being moved by rotation of the screw arrangement, a means for shifting the shifter mechanism and cutter heads to move that assembly as a unit laterally of the material being trimmed, said means for shifting the screw arrangement being a shifter bar positioned in a groove in the center of the screw arrangement and operated by a means which causes the shifter bar to move the screw arrangement in a direction transverse to the direction the sheet material may be moving relative to the cutter heads, and an indicating means for indicating the cutting position of the cutters so that the operator of the apparatus can shift the cutters to correspond to the edge of the pattern placed upon the sheet material.
Claim 2
Dependent Claim
212 words
A trimmer apparatus fro trimming a sheet material which has a pattern printed thereon, the edge of the pattern not being in registry with the edge of the sheet material and the edge of the pattern being variable in its position relative to the edge of the sheet material, a shifter mechanism for two cutter heads to shift the cutter heads relative to each other to vary the distance therebetween, said shifter mechanism being a screw thread arrangement with right and left-hand screws on the ends thereof, said cutter heads being moved by rotation of the screw arrangement, a means for shifting the shifter mechanism and cutter heads to move that assembly as a unit laterally of the material being trimmed, said means for shifting the screw arrangement being a shifter bar positioned in a groove in the center of the screw arrangement and operated by a means which causes the shifter bar to move the screw arrangement in a direction transverse to the direction the sheet material may be moving relative to the cutter heads, and an indicating means for indicating the cutting position of the cutters so that the operator of the apparatus can shift the cutters to correspond to the edge of the pattern placed upon the sheet material.
Claim 3
Dependent Claim
50 words
The apparatus of claim 1 wherein the shifter bar is driven by a screw and this constitutes a portion of the means which causes the shifter bar to move the screw arrangement in either direction transverse to the direction the sheet material may be moving relative to the cutter heads.
Claim 4
Dependent Claim
39 words
The apparatus of claim 1 wherein the indicating means for indicating the cutting position of the cutters are guiders positioned forward of each of the cutters to indicate where the cutters would cut the sheet material to be trimmed.
References Cited (Backward Citations)
US1180842A
Cited
US2713903A
Cited
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 |