US3939587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Page-turner for books and the like
Assignee: Individual
•
Filing: 1974-02-04
•
Granted: 1976-02-24
•
Expires: 1994-02-04
Abstract
Abstract A page-turner for books contains a page-turning roller which can be moved from one side of the open book to the other, and which can also be rotated in the desired direction. The unturned pages of the book are kept in position by means of two page retainers.
Inventors
- 👤 Jan Hakan Weststrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:19
CPC Classifications
B; B42; B42D; B42D9/00; B42D9/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
244 words
A page-turner for turning the pages of an open publication having a spine and front and back covers, the page-turner comprising: a frame; a support for supporting an open publication; first means for carrying said support on said frame; second means for clamping the covers of such open publication on said support; a rotatable page-turning roller having an axis extending in a first direction substantially parallel to the spine of such publication when the publication is supported by said support; third means coupled to said frame for carrying said page-turning roller over said support and for selectively displacing said page-turning roller from one side of the support to the other in a second direction substantially perpendicular to said first direction; fourth means for selectively rotating said page-turning roller in a desired direction of the two possible rotational directions; fifth means for bringing said page-turning roller into contact with the pages of such open publication; sixth means for pressing down the pages of such open publication not being turned, said sixth means including two page-retainers arranged in conjunction with the page-turning roller; and seventh means for operating said third, fourth and fifth means to sequentially bring said page-turning into engagement with a page to be turned, selectively rotate said page-turning roller so that at least said page to be turned is brought up on the page-turning roller, and displace said page-turning roller to the opposite side of the open publication, whereby said page is turned.
Claim 2
Dependent Claim
244 words
A page-turner for turning the pages of an open publication having a spine and front and back covers, the page-turner comprising: a frame; a support for supporting an open publication; first means for carrying said support on said frame; second means for clamping the covers of such open publication on said support; a rotatable page-turning roller having an axis extending in a first direction substantially parallel to the spine of such publication when the publication is supported by said support; third means coupled to said frame for carrying said page-turning roller over said support and for selectively displacing said page-turning roller from one side of the support to the other in a second direction substantially perpendicular to said first direction; fourth means for selectively rotating said page-turning roller in a desired direction of the two possible rotational directions; fifth means for bringing said page-turning roller into contact with the pages of such open publication; sixth means for pressing down the pages of such open publication not being turned, said sixth means including two page-retainers arranged in conjunction with the page-turning roller; and seventh means for operating said third, fourth and fifth means to sequentially bring said page-turning into engagement with a page to be turned, selectively rotate said page-turning roller so that at least said page to be turned is brought up on the page-turning roller, and displace said page-turning roller to the opposite side of the open publication, whereby said page is turned.
Claim 3
Dependent Claim
71 words
A page-turner according to claim 1, wherein said third means includes a guide rail extending in a direction perpendicular to said first direction; means for suspending said guide rail in said frame so that said guide rail is pivotable about an axis substantially parallel to the direction of displacement of the page-turning roller; a carriage displaceable along said guide rail; and means for rotatably suspending the pageturning roller in said carriage.
Claim 4
Dependent Claim
93 words
A page-turner according to claim 2, wherein said sixth means further include a shaft extending in parallel with the page-turning roller, a first arm for pivotably coupling said shaft to the carriage, a second arm pivotably attached to the page-turning roller and connected to said shaft, means for spring-fitting said page-retainers on the shaft, and means for pivoting said first arm and thus said shaft in a direction towards one side of the support when the carriage is displaced from a neutral position in a direction towards the other side of the support.
Claim 5
Dependent Claim
44 words
A page-turner according to claim 3, wherein fixed guide means are provided for pressing down, when the carriage is displaced, said first arm and thus said shaft and one of the page retainers towards the open publication with the help of a tension spring.
Claim 6
Dependent Claim
29 words
A page-turner according to claim 4, wherein said tension spring is secured to the ends of the carriage and runs over a pulley wheel attached to said first arm.
Claim 7
Dependent Claim
51 words
A page-turner according to claim 4, wherein the other page retainer is restrained from contact with the publication by means of a guide wheel in a holder protruding over the roller from the carriage, said guide wheel cooperating with a guide plate arranged on the under side of said page retainer.
Claim 8
Dependent Claim
33 words
A page-turner according to claim 3, wherein spring means are provided for pressing the page retainers towards the open publication, said spring means being attached to the retainers and passing over said shaft.
Claim 9
Dependent Claim
57 words
A page-turner according to claim 2, wherein said third means further include a first electric motor arranged at one end of the guide rail and first driving means coupled between said first electric motor and said carriage for transferring rotational movement generated by said first electric motor into said displacement of the carriage along the guide rail.
Claim 10
Dependent Claim
63 words
A page-turner according to claim 8, wherein said fourth means includes a second electric motor arranged at the other end of the guide rail and second driving means coupled between said second electric motor and said means for rotatably suspending the page-turning roller in the carriage for transferring rotational movement generated by said second electric motor into rotational movement of the page-turning roller.
Claim 11
Dependent Claim
74 words
A page-turner according to claim 9, wherein the second driving means includes a closed loop chain extending along the guide rail and driven by the second electric motor, and a toothed wheel secured to said means for rotatably suspending the page-turning roller in the carriage and in engagement with said closed loop chain, so that said toothed wheel can roll on said closed loop chain when the carriage is displaced along the guide rail.
Claim 12
Dependent Claim
50 words
A page-turner according to claim 1, wherein said first means include journal means for carrying the support so that the support is pivotable with respect to the frame around an axis which is substantially perpendicular to said first direction and passes approximately through the center of gravity of the support.
Claim 13
Dependent Claim
21 words
A page-turner according to claim 1, wherein the central part of the support below the page-turning roller is curved slightly downwards.
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) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |