GB741463A - A device for imparting intermittent rotational movement to a table or other rotatable object - Google Patents
A device for imparting intermittent rotational movement to a table or other rotatable objectInfo
- Publication number
- GB741463A GB741463A GB32892/53A GB3289253A GB741463A GB 741463 A GB741463 A GB 741463A GB 32892/53 A GB32892/53 A GB 32892/53A GB 3289253 A GB3289253 A GB 3289253A GB 741463 A GB741463 A GB 741463A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pawl
- stud
- arm
- spring
- pressure
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H27/00—Step-by-step mechanisms without freewheel members, e.g. Geneva drives
- F16H27/02—Step-by-step mechanisms without freewheel members, e.g. Geneva drives with at least one reciprocating or oscillating transmission member
Abstract
741,463. Ratchet gearing. NAAMLOOZE VENNOOTSCHAP BETONFABRIEK DE METEOOR. Nov. 26, 1953 [Dec. 31, 1952], No. 32892/53. Class 80(3) An intermittent driving device for rotating a table or other member 1 in steps comprises a driving pawl 17 and a stop pawl 16 both mounted upon a pivoted arm 13 which is actuated by the piston of a compressed air cylinder 25 when a movement of the table 1 is required. The pawl 17 is pivoted on side plates of the arm 13 at 18 and is loaded by a spring 19 to grip, when the table is stationary, a stud 5 of the table between it and the stop pawl 16, as shown in the Figure. On admitting compressed air to the cylinder 25 through a suitable valve controlled by a pedal, for example, a downward movement of arm 13 with pawls 17 and 16 is effected. The pawl 16 moves away from stud 5 and the pawl 17 swings inwardly against the pressure of spring 19 until a shoulder 30 thereon contacts the stud 5. A rotary movement is then imparted to the table 1 through pawl 17 until the stroke of the operating piston is completed. The rotation of the table continues owing to its kinetic energy and the stud 5 moves clear of the pawl 17 which then returns to its initial position. The operating air pressure is then released, preferably automatically, and the arm 13 also returns to its initial position by air pressure to the opposite end of cylinder 25 or by spring pressure. Another stud 5 of the table 1 will then approach the pawl 17 and striking its surface 32 will move it inward and be stopped by the pawl 16. The arm 13 may swing a little from its initial position shown to cushion the impact of stud 5 but will be immediately returned by the air or spring pressure to locate positively the table. A further operation can then be initiated by the operator. The pawl device may operate by a linear movement instead of a swinging one or a plurality of pawl devices may be arranged on a rotary disc which is stepped around to bring such devices into successive operation.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL741463X | 1952-12-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB741463A true GB741463A (en) | 1955-12-07 |
Family
ID=19822428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB32892/53A Expired GB741463A (en) | 1952-12-31 | 1953-11-26 | A device for imparting intermittent rotational movement to a table or other rotatable object |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB741463A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3412633A (en) * | 1965-01-13 | 1968-11-26 | James Archdale And Company Ltd | Indexing mechanism |
-
1953
- 1953-11-26 GB GB32892/53A patent/GB741463A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3412633A (en) * | 1965-01-13 | 1968-11-26 | James Archdale And Company Ltd | Indexing mechanism |
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