GB1386684A - Safety guards - Google Patents

Abstract

1386684 Machinery guards ATKINSONS OF CLITHEROE Ltd 9 Aug 1973 [26 Aug 1972] 39904/72 Heading F2J A non-rotary protective machinery guard for the universally jointed end 20 of a telescopic power take-off shaft 17 of an agricultural tractor comprises a plastics bellows 22 secured at one end to a plastics flanged member 14, which is relatively rotatably mounted and axially located on the shaft 17 by integral flexible fingers 18 of the member 14, and releasably secured at its other end 24 by headed studs 25 thereon engageable in keyhole slots 26 on a plastics conical sleeve member 10, 13 which is secured to the rear of the tractor transmission housing 12, the bellows member 22 flexibly accommodating angular movement of the P.T.O. shaft 17 in normal operation and being quickly releasable at the end 24, via the studs and slots 25, 26 whereby the bellows may be axially contractable to permit access to the jointed end 20 for servicing and/or removal of the P.T.O. shaft 17 and jointed end 20, via a pin 30, for changing or removing the P.T.O. implement. When disconnected, the bellows 22. affords some weather protection for the jointed end 20 of the implement, and the conical sleeve 10, 13 gives some protection from the now exposed end of the main output driving shaft 11. If the entire joint is to be exposed, the end 24 is first released and then the fingers 18 of the other end 14 are sprung out of their locating groove 19 in shaft 17 permitting the members 14 and the attached bellows 22 to be slid along said shaft.