GB583937A - Improvements in or relating to lever mechanisms - Google Patents
Improvements in or relating to lever mechanismsInfo
- Publication number
- GB583937A GB583937A GB13939/44A GB1393944A GB583937A GB 583937 A GB583937 A GB 583937A GB 13939/44 A GB13939/44 A GB 13939/44A GB 1393944 A GB1393944 A GB 1393944A GB 583937 A GB583937 A GB 583937A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- slot
- pin
- stroke
- during
- 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
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G7/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof
- G05G7/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof characterised by special provisions for conveying or converting motion, or for acting at a distance
- G05G7/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof characterised by special provisions for conveying or converting motion, or for acting at a distance altering the ratio of motion or force between controlling member and controlled member as a function of the position of the controlling member
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Braking Arrangements (AREA)
Abstract
583,937. Lever mechanisms. MacGRAHAM, H. C. July 20, 1944, No. 13939. Convention date, July 30, 1943. [Class 80 (iii)] [Also in Groups XXIII and XXXIV] A lever is provided with a pair of fulcrum pins which become effective in turn during a single unidirectional stroke of the lever to vary the velocity ratio transmitted..As shown, the lever 10 has fulcrum pins 11, 12, spaced at different distances from the work point 13, and bearing in slots 21, 22, respectively in a fixed plate 23. The slots 21, 22 are shaped as shown. During the initial part of the downward stroke of the lever 10, from the position shown, the lever 10 pivots about the pin 11 located in the bottom of the slot 21 and the pin 12 moves down its slot 22. The camming action of the slot 22 then causes the pin 11 to disengage from its abutment position in the slot 21 and the pin 12 acts as the fulcrum, the pin 11 moving upwardly through its slot 21. The mechanism is shown applied to a mop-wringer having a pair of rollers linked to the work-point 13 so that the rollers approach one another rapidly during the first part of the down stroke of the lever 10 and are then pressed together strongly during the remainder of the stroke. The lever mechanism may be used for applying a brake to its drum, for actuating the jaws of a vice, or for moving a casement window.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US583937XA | 1943-07-30 | 1943-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB583937A true GB583937A (en) | 1947-01-02 |
Family
ID=22016550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13939/44A Expired GB583937A (en) | 1943-07-30 | 1944-07-20 | Improvements in or relating to lever mechanisms |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB583937A (en) |
-
1944
- 1944-07-20 GB GB13939/44A patent/GB583937A/en not_active Expired
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