GB790702A - Improvements relating to clutches for transmitting rotary motion - Google Patents
Improvements relating to clutches for transmitting rotary motionInfo
- Publication number
- GB790702A GB790702A GB2235355A GB2235355A GB790702A GB 790702 A GB790702 A GB 790702A GB 2235355 A GB2235355 A GB 2235355A GB 2235355 A GB2235355 A GB 2235355A GB 790702 A GB790702 A GB 790702A
- Authority
- GB
- United Kingdom
- Prior art keywords
- teeth
- sleeve
- clutch
- shaft
- flanges
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/02—Arrangements for synchronisation, also for power-operated clutches
- F16D23/10—Arrangements for synchronisation, also for power-operated clutches automatically producing the engagement of the clutch when the clutch members are moving at the same speed; Indicating synchronisation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
790,702. Ratchet clutches. S.S.S. GEARS, Ltd. July 11, 1956 [Aug. 3, 1955], No. 22353/55. Class 80 (2). A clutch of the Legge type, comprising a sleeve 1 with teeth 2 and a shaft 3 having helical splines 5 supporting an intermediate clutch member 4 formed with clutch teeth 7, synchronization of the speeds of the sleeve and shaft 1, 3 allowing pawls 8 or the like on the intermediate member 4 to engage the teeth 2 and thus screw the clutch member 4 along the helical splines 5 to engage the teeth 2, 7, is provided with a dash-pot operative only in the final stages of the screwing motion of the clutch member 4 to cushion the engagement of the clutch teeth. In one form, a sleeve 12, Figs. 1, 2, surrounds a shoulder 11 on the shaft 3 and is formed with an annular flange 13 which co-operates with the shaft shoulder to form a chamber to which oil is continually fed through shaft ducts 14, 15. A further sleeve 17 has flanges 18, 19 at its ends which co-operate with outwardly directed flanges 16, 10 on the sleeve 12 and the intermediate clutch member 4, respectively. A control fork 20 engages between two outwardly directed flanges on the sleeve 17. In the disengaged position of the clutch, the control fork 20 is in the position shown in Fig. 2, when the intermediate clutch member 4 is held to the right. To engage the teeth 2, 7, the control fork 20 is moved to the position shown in Fig. 1. The sleeve 17 is thereby moved to the position shown in the lower half of Fig. 1, and pushes the intermediate clutch member 4 leftwards until the pawls &c. 8 ratchet over the teeth 2. The leftward movement of the sleeve 17 does not effect the dash-pot sleeve 12, due to the lost motion connection between the flanges 16, 18. On synchronization of the sleeve and shaft 1, 3, the sleeve 4 is further screwed to the left, as described above, and the teeth 2, 7 begin to engage. At this moment, the flanges 16, 18 abut, and further leftward movement of the intermediate clutch member 4 expels oil from the dash-pot chamber formed between the flange 13 and shoulder 11 through the annular clearance spaced between the shaft and the flange, and if desired through small escape holes or graduated orifices (not shown) in the shaft or flange. Completion of clutch engagement is thus cushioned. In the final position the pawls lie to the left of the clutch teeth 2. The clutch teeth 2, 7 and the pawl 8 may have their engaging surfaces chamfered as shown in Fig. 3, so that after the initial engaging motion the pawl is relieved of load. Alternatively, the clutch teeth 7 may remain unchamfered, while the nose of the pawl 8 is chamfered across its whole width, Fig. 6 (not shown), or the teeth 7 may be chamfered while the teeth 2 and the noses of the pawl 8 remain unchamfered, Fig. 7 (not shown), or the nose of the pawl 8 may be chamfered across its whole width while the clutch teeth 2, 7 are both chamfered, Fig. 8 (not shown). In a modification, Fig. 9, a dash-pot chamber 23 is formed between the intermediate clutch member 4 and a collar 29 fast on the shaft 3. Oil is continuously fed to the dash-pot chamber through shaft ducts 26 ... 28. An annular piston 25 within the dash-pot chamber is formed with end flanges 32, 33 which co-operate with flanges 31, 34 on the collar 29 and the intermediate clutch member, respectively. The intermediate member 4 is engaged by a control fork 20 which, when moved from the disengaged position shown, first takes up part of the lost motion between the flanges 32, 34 while moving the paws 8 into engagement with the clutch teeth 2. When the speeds of rotation of the sleeve 1 and shaft are synchronized, the pawls 8 screw the intermediate clutch member 4 along the helical splines to cause initial engagement of the clutch teeth 2, 7, this movement engaging the flanges 32, 34. Further screwing of the intermediate clutch member 4, as the clutch teeth 2, 7 move towards full engagement, draws the annular piston 25 into the dash-pot chamber 23 and thus expels oil therefrom, either through small escape holes or graduated orifices (not shown) or past a small clearance space between the piston 25 and the radially outer wall of the dash-pot chamber. Specifications 354,711, 410,083, 513,974 and 534,470 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2235355A GB790702A (en) | 1955-08-03 | 1955-08-03 | Improvements relating to clutches for transmitting rotary motion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2235355A GB790702A (en) | 1955-08-03 | 1955-08-03 | Improvements relating to clutches for transmitting rotary motion |
Publications (1)
Publication Number | Publication Date |
---|---|
GB790702A true GB790702A (en) | 1958-02-12 |
Family
ID=10178028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2235355A Expired GB790702A (en) | 1955-08-03 | 1955-08-03 | Improvements relating to clutches for transmitting rotary motion |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB790702A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1159707B (en) * | 1960-02-22 | 1963-12-19 | S S S Gears Ltd | Claw freewheel clutch, one half of which can be moved axially by screwing |
DE1175496B (en) * | 1958-11-25 | 1964-08-06 | Renk Ag Zahnraeder | Overrunning clutch, especially for gear change gearboxes |
US3196703A (en) * | 1962-05-21 | 1965-07-27 | Sss Patents Ltd | Change speed gearboxes |
US3205987A (en) * | 1961-05-12 | 1965-09-14 | Sss Patents Ltd | Synchro self-shifting clutch with invertible parts |
DE1216623B (en) * | 1959-09-04 | 1966-05-12 | Renk Ag Zahnraeder | Freewheel and safety clutch |
FR2446416A1 (en) * | 1979-01-10 | 1980-08-08 | Westland Aircraft Ltd | FREEWHEEL COUPLING, PARTICULARLY FOR A HELICOPTER ROTOR, AND HELICOPTER COMPRISING SUCH A COUPLING |
CN114198426A (en) * | 2021-12-09 | 2022-03-18 | 中国船舶重工集团公司第七0三研究所 | Position locking type high-speed synchronous automatic clutch |
CN114992256A (en) * | 2022-05-22 | 2022-09-02 | 中国船舶重工集团公司第七0三研究所 | Synchronous automatic clutch engagement locking tooth structure |
-
1955
- 1955-08-03 GB GB2235355A patent/GB790702A/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1175496B (en) * | 1958-11-25 | 1964-08-06 | Renk Ag Zahnraeder | Overrunning clutch, especially for gear change gearboxes |
DE1216623B (en) * | 1959-09-04 | 1966-05-12 | Renk Ag Zahnraeder | Freewheel and safety clutch |
DE1159707B (en) * | 1960-02-22 | 1963-12-19 | S S S Gears Ltd | Claw freewheel clutch, one half of which can be moved axially by screwing |
US3205987A (en) * | 1961-05-12 | 1965-09-14 | Sss Patents Ltd | Synchro self-shifting clutch with invertible parts |
US3196703A (en) * | 1962-05-21 | 1965-07-27 | Sss Patents Ltd | Change speed gearboxes |
FR2446416A1 (en) * | 1979-01-10 | 1980-08-08 | Westland Aircraft Ltd | FREEWHEEL COUPLING, PARTICULARLY FOR A HELICOPTER ROTOR, AND HELICOPTER COMPRISING SUCH A COUPLING |
CN114198426A (en) * | 2021-12-09 | 2022-03-18 | 中国船舶重工集团公司第七0三研究所 | Position locking type high-speed synchronous automatic clutch |
CN114198426B (en) * | 2021-12-09 | 2024-04-09 | 中国船舶重工集团公司第七0三研究所 | Position locking type high-speed synchronous automatic clutch |
CN114992256A (en) * | 2022-05-22 | 2022-09-02 | 中国船舶重工集团公司第七0三研究所 | Synchronous automatic clutch engagement locking tooth structure |
CN114992256B (en) * | 2022-05-22 | 2024-04-05 | 中国船舶重工集团公司第七0三研究所 | Synchronous automatic clutch joint locking tooth structure |
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