GB1188445A - Improved Ratchet Winches or Hoists - Google Patents
Improved Ratchet Winches or HoistsInfo
- Publication number
- GB1188445A GB1188445A GB50665/68A GB5066568A GB1188445A GB 1188445 A GB1188445 A GB 1188445A GB 50665/68 A GB50665/68 A GB 50665/68A GB 5066568 A GB5066568 A GB 5066568A GB 1188445 A GB1188445 A GB 1188445A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- pawls
- cable
- pawl
- engagement
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/04—Driving gear manually operated
- B66D1/06—Safety cranks for preventing unwanted crank rotation and subsequent lowering of the loads
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/15—Intermittent grip type mechanical movement
- Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
- Y10T74/1553—Lever actuator
- Y10T74/1555—Rotary driven element
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/15—Intermittent grip type mechanical movement
- Y10T74/1558—Grip units and features
- Y10T74/1577—Gripper mountings, lever
- Y10T74/1581—Multiple acting
- Y10T74/1582—Single ratchet or clutch
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/15—Intermittent grip type mechanical movement
- Y10T74/1558—Grip units and features
- Y10T74/1587—Grip features
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
1,188,445. Winches. W. L. BLACKBURN. 25 Oct., 1968 [19 April, 1968], No. 50665/68. Heading B8B. A ratchet winch for a cable 24 comprises a drum and ratchet wheel 18 secured to a shaft 16, the drum being driven by alternate engagement of dual pawls 40, 42 with the wheel 18 when a lever 30 is reciprocated, the pawls being urged by leaf springs 54, 56 into engagement with the ratchet wheel 18 when a control lever 28 is in a first position for hauling in cable and urged out of the engagement when lever 28 is rotated into a second position for paying-out cable. Rotation of the lever 28 rotates a cam 46 about point 44, the cam being linked to the pawls 40, 42 via a pivot 48 for a link 50, the remote end of which is pivoted to the spring 54 and to another link 52 coupled to the spring 56. When hauling in cable, the pawls are urged towards the ratchet wheel 18 and due to their eccentric pivoting 36, 38 on a rocker shaft 34 connected to the lever 30, alternately engage teeth 20 on the wheel 18 as the lever 30 is reciprocated, both pawls automatically engaging teeth on the wheel to lock it if the lever 30 is released with tension in the cable 24. During paying-out of the cable, the pawls still alternately engage the ratchet teeth as the lever 30 is reciprocated, but since the pawls are being urged out of teeth engagement, as one pawl takes over ratchet tooth engagement from the other at the end of a lever stroke, the other pawl drops out of tooth engagement and does not re-engage until the next lever stroke. The top pawl 40 is guided into re-engagement with the teeth 20 by using the bottom engaged pawl 42, whereas the latter uses a guide cam 66. In a modification of Figs. 10 to 15 (not shown), both pawls are guided by cams which are brought into their operative position only when the paying-out operation is to be performed. In the embodiment of Fig. 7 (not shown), a manually adjustable brake is actuable on the ratchet wheel to assist in paying-out cable. In the embodiment of Figs. 19, 20 (not shown), the pawl actuating lever is reciprocated by a crank arm eccentrically pivoted to a ratchet wheel driven manually by a hand wheel. The ratchet wheel has an associated pawl whereby the cable drum may be halted at much smaller increments of rotation than was possible with just the dual pawl ratchet wheel. The apparatus may take the form of a chaindriven hoist or the lever may be reciprocated by powered means.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US72265868A | 1968-04-19 | 1968-04-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1188445A true GB1188445A (en) | 1970-04-15 |
Family
ID=24902801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB50665/68A Expired GB1188445A (en) | 1968-04-19 | 1968-10-25 | Improved Ratchet Winches or Hoists |
Country Status (4)
Country | Link |
---|---|
US (1) | US3581586A (en) |
JP (1) | JPS495783B1 (en) |
GB (1) | GB1188445A (en) |
NL (1) | NL6816738A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2181801A (en) * | 1985-10-18 | 1987-04-29 | Rwo Marine Equip Ltd | Improvements in or relating to a ratchet mechanism |
GB2216862A (en) * | 1988-03-17 | 1989-10-18 | Graham William Wright | Winches |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4867006A (en) * | 1987-04-22 | 1989-09-19 | Giberson Melbourne F | Rotating shaft mounted actuating mechanism |
US5320298A (en) * | 1992-01-10 | 1994-06-14 | Hewlett-Packard Company | Undirectional ratchet utilizing an articulated pawl |
CN101274731B (en) * | 2007-03-27 | 2012-05-23 | 张敏 | Hand high-lift operation riser |
CN104466793B (en) * | 2014-12-03 | 2017-02-01 | 中国南方电网有限责任公司超高压输电公司梧州局 | Portable aloft lifting device |
WO2016151709A1 (en) * | 2015-03-20 | 2016-09-29 | オムロン株式会社 | Lever unit |
US10266377B2 (en) * | 2016-04-22 | 2019-04-23 | Arcosa, Inc. | Winch tightening mechanism |
US11247519B2 (en) * | 2019-07-18 | 2022-02-15 | David Richard Hawk | Secondary containment device for towing truck |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1348940A (en) * | 1916-05-03 | 1920-08-10 | A J Kirstin Company | Stump-puller |
US1454398A (en) * | 1922-05-17 | 1923-05-08 | Mackenzie Philip | Pawl-and-ratchet power appliance |
US1585118A (en) * | 1922-10-21 | 1926-05-18 | Puller Mfg Co Inc | Pulling device |
US2302931A (en) * | 1940-04-06 | 1942-11-24 | Charles B Arnold | Feedwater control method and apparatus |
-
1968
- 1968-04-19 US US722658A patent/US3581586A/en not_active Expired - Lifetime
- 1968-10-25 GB GB50665/68A patent/GB1188445A/en not_active Expired
- 1968-11-22 NL NL6816738A patent/NL6816738A/xx not_active Application Discontinuation
-
1969
- 1969-02-05 JP JP44008204A patent/JPS495783B1/ja active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2181801A (en) * | 1985-10-18 | 1987-04-29 | Rwo Marine Equip Ltd | Improvements in or relating to a ratchet mechanism |
GB2181801B (en) * | 1985-10-18 | 1989-11-01 | Rwo Marine Equip Ltd | Improvements in or relating to a ratchet mechanism |
US4977795A (en) * | 1985-10-18 | 1990-12-18 | Rwo (Marine Equipment) Limited | Relating to a ratchet machanism |
GB2216862A (en) * | 1988-03-17 | 1989-10-18 | Graham William Wright | Winches |
GB2216862B (en) * | 1988-03-17 | 1992-06-17 | Graham William Wright | Lever operated portable winches. |
Also Published As
Publication number | Publication date |
---|---|
DE1810443B2 (en) | 1972-08-24 |
JPS495783B1 (en) | 1974-02-08 |
DE1810443A1 (en) | 1969-11-06 |
NL6816738A (en) | 1969-10-21 |
US3581586A (en) | 1971-06-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1188445A (en) | Improved Ratchet Winches or Hoists | |
GB1411410A (en) | Spare wheel holding device | |
US2633328A (en) | Winch | |
EP0145645A3 (en) | Device for tensioning links, especially chains or belts | |
US4293121A (en) | Winch arrangement | |
GB1437625A (en) | ||
US3084432A (en) | Portable hand tool | |
GB1123512A (en) | Ratchet winch | |
GB1107326A (en) | Improvements in or relating to cranes, grabs and the like | |
US2608107A (en) | Puller device | |
US2670978A (en) | Twine knotter | |
GB1326446A (en) | Ratchet tensioning devices | |
US2462620A (en) | Winding machine | |
SU391049A1 (en) | DEVICE FOR EMERGENCY STOPPING OF ADDITIONAL LOAD ROPE WINCH | |
GB559903A (en) | Ratchet winch | |
US2142256A (en) | Hand brake | |
SU290720A1 (en) | Device for moving spraying machine limiting cylinders | |
US2527420A (en) | Intermittently held lever actuated stem | |
IE33224B1 (en) | Improvements in or relating to hauling apparatus | |
SU949262A1 (en) | Ratchet-and-pawl mechanism | |
SU599970A1 (en) | Pull-through device of timbering machine | |
SU517556A1 (en) | Device for tensioning the rope of the boom of the lifting mechanism | |
GB643525A (en) | Improvements in reduction gears for remote control systems | |
GB519813A (en) | Improvements in or relating to tensioning tools for flexible binder | |
US2114242A (en) | Brake control for winches |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee | ||
PCNP | Patent ceased through non-payment of renewal fee |