US3652147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper cutting machines
Assignee: Individual
•
Filing: 1970-09-04
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Granted: 1972-03-28
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Expires: 1990-09-04
Abstract
Abstract The guiltotine saddle of a paper cutting machine is equipped with an optical viewing system projecting an image of the relevant portion of the machine table fine scale and of a contrast wedge alongside the machine table scale and having a taper coextensive therewith, on to a ground glass screen having a datum mark for scanning the machine table scale and a transverse coarse scale scribed thereon. The arrangement is such that when the saddle travels over the table, the image projected on the screen of the sloping edge of the contrast wedge scans the transverse coarse scale pari passu with the scanning of the fine scale moving under the datum mark.
Inventors
- 👤 Rudolf Mohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:23
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/02; Y; Y10; Y10T; Y10T83/00; Y10T83/828; Y10T83/839
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
129 words
A measuring tape indicator device providing coarse and fine readings for paper cutting machines, comprising an optical system fast with a saddle travelling over the machine table and arranged to view a measuring rule having fine graduations extending along said table, a contrast wedge secured to the surface of said table alongside said rule, the taper of said wedge being coextensive with said rule, said optical system having a ground glass viewing screen transversely scribed with a scale of coarse graduations corresponding to the fine graduations on said rule, the image of the tapering edge of said wedge when projected on to saId ground glass screen acting as a cursor scanning said transverse coarse graduation with the scanning of the fine graduations by a datum mark on said screen.
Claim 2
Dependent Claim
129 words
A measuring tape indicator device providing coarse and fine readings for paper cutting machines, comprising an optical system fast with a saddle travelling over the machine table and arranged to view a measuring rule having fine graduations extending along said table, a contrast wedge secured to the surface of said table alongside said rule, the taper of said wedge being coextensive with said rule, said optical system having a ground glass viewing screen transversely scribed with a scale of coarse graduations corresponding to the fine graduations on said rule, the image of the tapering edge of said wedge when projected on to saId ground glass screen acting as a cursor scanning said transverse coarse graduation with the scanning of the fine graduations by a datum mark on said screen.
Claim 3
Dependent Claim
153 words
A measuring tape indicator device providing coarse and fine readings for paper cutting machines, comprising an optical system fast with a saddle travelling over the machine table and arranged to view a measuring rule having fine graduations extending along said table, a contrast wedge secured to the surface of said table alongside said rule, the taper of said wedge being coextensive with said rule, said optical system having a ground glass viewing screen transversely scribed with a scale of coarse graduations corresponding to the fine graduations on said rule, the image of the tapering edge of said wedge when projected on to said ground glass screen acting as a cursor scanning said transverse coarse graduations with the scanning of the fine graduations by a datum mark on said screen, the ratio of the linear scanning speed of the datum mark to that of the tapering edge of the contrast wedge being preferably 10:1.
Claim 4
Dependent Claim
153 words
A measuring tape indicator device providing coarse and fine readings for paper cutting machines, comprising an optical system fast with a saddle travelling over the machine table and arranged to view a measuring rule having fine graduations extending along said table, a contrast wedge secured to the surface of said table alongside said rule, the taper of said wedge being coextensive with said rule, said optical system having a ground glass viewing screen transversely scribed with a scale of coarse graduations corresponding to the fine graduations on said rule, the image of the tapering edge of said wedge when projected on to said ground glass screen acting as a cursor scanning said transverse coarse graduations with the scanning of the fine graduations by a datum mark on said screen, the ratio of the linear scanning speed of the datum mark to that of the tapering edge of the contrast wedge being preferably 10:1.
Claim 5
Dependent Claim
148 words
A measuring tape indicator device providing coarse and fine readings for paper cutting machines, comprising an optical system fast with a saddle travelling over the machine table and arranged to view a measuring rule having fine graduations extending along said table, a contrast wedge secured to the surface of said table alongside said rule, the taper of said wedge being coextensive with said rule, said optical system having a ground glass viewing screen transversely scribed with a scale of coarse graduations corresponding to the fine graduations on said rule, the contrast wedge and transversely scribed screen being of a shade contrasting with that of the ground glass screen, the image of the tapering edge of said wedge when projected on to said ground glass screen acting as a cursor scanning said transverse coarse graduations with the scanning of the fine graduations by a datum mark on said screen.
Claim 6
Dependent Claim
148 words
A measuring tape indicator device providing coarse and fine readings for paper cutting machines, comprising an optical system fast with a saddle travelling over the machine table and arranged to view a measuring rule having fine graduations extending along said table, a contrast wedge secured to the surface of said table alongside said rule, the taper of said wedge being coextensive with said rule, said optical system having a ground glass viewing screen transversely scribed with a scale of coarse graduations corresponding to the fine graduations on said rule, the contrast wedge and transversely scribed screen being of a shade contrasting with that of the ground glass screen, the image of the tapering edge of said wedge when projected on to said ground glass screen acting as a cursor scanning said transverse coarse graduations with the scanning of the fine graduations by a datum mark on said screen.
Claim 7
Dependent Claim
32 words
A measuring tape indicator device as claimed in claim 1, in which the image of the fine graduations and contrast wedge are reflected through 90* before projection on the ground glass screen.
References Cited (Backward Citations)
US2043625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |