Mower spindle and spindle drive belt braking arrangement for rotary mower having plurality of mower spindles
US4068452A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1976 |
| Grant date | Jan 17, 1978 |
| Priority date | — |
| Expiry date | Mar 11, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D69/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A braking arrangement for use with rotary mowers of the type comprising a pair of spaced apart arbors, each supporting for rotation a spindle having a mower blade mounted on the lower end thereof. A driven pulley is secured to the upper end of each spindle. The two driven pulleys are driven by a common drive belt. An idle pulley is movable either into tensioning or nontensioning relation to the drive belt to cause said belt to be in either driving or nondriving relation to the driven pulleys. To prevent coasting of the two mower blades and of the drive belt upon movement of the idler pulley to a nontensioning position, a rod-like pivoted brake member is provided which has a common braking cooperation with both driven pulleys. A biasing spring constantly urges the brake member toward braking position. A nonadjustable disabling link moves with movement of the idler pulley support arm so that when the idler pulley is moved to belt tensioning position the disabling link pivotally moves the brake member against the force of its biasing spring to a nonbraking position. When the idler pulley and the drive belt are moved to untensioned position, the disabling link is moved to a position in…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.