Patent US3889564A successfully refreshed from Google Patents.
US3889564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knife edge endless loop book cutter
Assignee: Comstock and Wescott Inc
•
Filing: 1974-01-23
•
Granted: 1975-06-17
•
Expires: 1994-01-23
Abstract
Abstract A band type of knife has a bevelled edge for cutting unbound sheets of a book held on a conveyor. The saw band is held by guides in the path of the book with the bevel at right angles to the face of the book sheets and with the band inclined relative to the sheets at an angle convergent in the direction of band travel so that the band saw pulls away from the uncut portion of the sheets.
Inventors
- 👤 Peter Aspinwall
- 👤 Jr Richard H Barbour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:21
CPC Classifications
B; B26; B26D; B26D1/00; B26D1/01; B26D1/46; Y; Y10; Y10S; Y10S83/00; Y10S83/929; Y10S83/934; Y10T; Y10T83/00; Y10T83/303; Y10T83/647; Y10T83/654; Y10T83/6542; Y10T83/6584; Y10T83/6633; Y10T83/707; Y10T83/7195; Y10T83/7264
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
170 words
Apparatus for cutting the sheets of a book comprising: a travelling knife edge cutter including an endless loop carrying a cutting edge and means to guide the loop through a straight portion at a cutting station; a book conveyor for moving a book throuGh the cutting station, and means on the conveyor for holding the book with the face of the book sheets facing substantially parallel to the cutting edge, the cutting edge having a bevel angle and the loop guide means holding the cutting edge inclined to the face of the sheets laterally of loop travel substantially at the bevel angle and with the bevel normal to the sheet face, and the book holding means and cutter loop guide means holding the sheet face at an angle to the straight portion convergent in the direction of cutter travel with the plane of the sheet inclined forwardly in the direction of book movement so that the cutting edge pulls on the sheets away from the uncut portion of the sheets.
Claim 2
Dependent Claim
170 words
Apparatus for cutting the sheets of a book comprising: a travelling knife edge cutter including an endless loop carrying a cutting edge and means to guide the loop through a straight portion at a cutting station; a book conveyor for moving a book throuGh the cutting station, and means on the conveyor for holding the book with the face of the book sheets facing substantially parallel to the cutting edge, the cutting edge having a bevel angle and the loop guide means holding the cutting edge inclined to the face of the sheets laterally of loop travel substantially at the bevel angle and with the bevel normal to the sheet face, and the book holding means and cutter loop guide means holding the sheet face at an angle to the straight portion convergent in the direction of cutter travel with the plane of the sheet inclined forwardly in the direction of book movement so that the cutting edge pulls on the sheets away from the uncut portion of the sheets.
Claim 3
Dependent Claim
15 words
Apparatus according to claim 1 wherein the convergent angle is 1* to a few degrees.
Claim 4
Dependent Claim
60 words
Apparatus according to claim 1 including cutting edge sharpening means disposed in contact with the bevel for continuous sharpening of the edge, and wherein the loop guide means includes a back up for the loop adjustable to advance the blade outwardly of the guide means after sharpening while maintaining the normal inclination of the bevel relative to the sheet face.
Claim 5
Dependent Claim
27 words
Apparatus according to claim 1 wherein the cutting edge has a second bevel angle on the opposite side of the loop from the first said bevel angle.
Claim 6
Dependent Claim
52 words
Apparatus according to claim 4 wherein the loop guide means includes two opposed plates forming a guideway for the straight portion of the loop therebetween, one of the plates abutting the loop on the side of the first bevel angle and having a tapered face substantially parallel to the first bevel angle.
Claim 7
Dependent Claim
23 words
Apparatus according to claim 5 wherein the tapered face is slightly displaced from the plane of the first bevel angle toward the loop.
Claim 8
Dependent Claim
21 words
Apparatus according to claim 5 wherein the other guide plate has a tapered face substantially parallel to the second bevel angle.
References Cited (Backward Citations)
US1088573A
Cited
US1248253A
Cited
US1635165A
Cited
US1551167A
Cited
US2524016A
Cited
US2670768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |