GB800767A - Improvements in recording instruments - Google Patents
Improvements in recording instrumentsInfo
- Publication number
- GB800767A GB800767A GB11072/57A GB1107257A GB800767A GB 800767 A GB800767 A GB 800767A GB 11072/57 A GB11072/57 A GB 11072/57A GB 1107257 A GB1107257 A GB 1107257A GB 800767 A GB800767 A GB 800767A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chart
- stylus
- mounting
- driven
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C7/00—Details or accessories common to the registering or indicating apparatus of groups G07C3/00 and G07C5/00
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Recording Measured Values (AREA)
Abstract
800,767. Recording-apparatus. ASPINALL, H. T. April 4, 1957 [April 17, 1956], No. 11072/57. Class 106 (4). Recording-apparatus comprises a chart in the form of an endless belt 3 replaceably fitted around a supporting roller 1, a mounting 8 carrying a stylus 12 positioned above and adapted to rest in contact with the chart 3, a detecting mechanism 13 operating to move the stylus relative to the chart and a constant speed motor connected to rotate the chart 3 and move the stylus mounting 8 transversely across the chart. As shown, the roller 1 is driven by the motor 14 through a gear train and drives the chart 3 through pins 4 engaging perforations along the sides of the chart 3 which is held taut by a jockey roller 2. The mounting 8 is fixed to a cylindrical slide 7 on a guide bar 6 and is further supported and driven by a tooth 11 depending from a shoe 10 fixed to the mounting 8 and engaging a worm shaft 9 driven from a branch of the motor-driven gear train. The spindle 20 of the roller 1 rests in half bearings 21 in slides 22 movable in guides 23 and bridged by a bar 25. When the slides 22 are pulled out to change the chart 3 the driving gear train is broken and the bar 25 engages an arm 24 depending from the mounting 8 which is rocked about the bar 6 disengaging the tooth 11 from the worm 9 and lifting the stylus 12 clear of the chart 3. During recording, the stylus 12 deviates from its spiral path relative to the endless band chart 3 in accordance with variations applied to a moving coil instrument 13 connected across a tachogenerator in circuit with a calibrating resistance 35 and rectifier. The stylus is shown in the form of a gravity fed pen, with ink reservoir, mounted on a cranked arm 31 and suitably counter-balanced.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA800767X | 1956-04-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB800767A true GB800767A (en) | 1958-09-03 |
Family
ID=25575077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11072/57A Expired GB800767A (en) | 1956-04-17 | 1957-04-04 | Improvements in recording instruments |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB800767A (en) |
-
1957
- 1957-04-04 GB GB11072/57A patent/GB800767A/en not_active Expired
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