Improvements in Antifriction Bearings for the Spindles of Pulley Blocks and the like.
Year: 1891

page_text: Date of Application, 25th Sept., 1891
Complete Specification Left, 25th June, 1892-Accepted, 24th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in Antifriction Bearings for the Spindles of Pulley
Blocks and the like.
I WILLIAM JOHN BREWER of (care of Charles Mason C.E.) 10 Lyndhurst
Square S.E. Civil Engineer do hereby declare the nature of this invention to be as
follows:-
The object of my invention is to provide an improved anti friction bearing for
the wheels or sheaves of pulley blocks and the like by the use of which friction is
reduced to a minimum.
In carrying out my invention the spindle of the pulley wheel rests on the outer
periphery of a small anti-friction wheel mounted in suitable bearings so that the
weight is taken by the said wheel.
To prevent the axle or spindle of the pulley wheel slipping on the periphery of
the anti friction wheel I fit or fix a pinion on the axle or spindle of the pulley
wheel which is adapted to engage with corresponding gear fitted or fixed on the
anti friction wheel or the spindle may be toothed and teeth formed on the periphery
of the anti friction wheel and adapted to engage together so preventing all
possibility of slip and ensuring an even working pulley.
I may if desired also employ rubber or other suitable material to be fitted to
both pinion and anti-friction wheel to engage in opposite grooves and thus ensure a.
perfect revolution.
Dated this 24th day of September 1891.
COMPLETE SPECIFICATION.
Improvements in Antifriction Bearings for the Spindles of Pulley
Blocks and the like.
WILLIAM JOHN BREWER Civil Engineer care of Charles Mason Esq. C.E.
10 Lyndhurst Square London S.E. do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This invention relates to certain improvements in anti-friction bearings for the
spindles of pulley blocks and the like and consists in fitting upon the spindle ends
to prevent slipping in a convenient position a small pinion to engage with suitable
corresponding gear fitted or cast on to the antifriction wheel supporting the spindle
of the weight carrying sheave said pinion may engage with its corresponding
either fixed at the side or sides of the anti friction wheel or in a recess in its
face or periphery.
gear
In light running pulley blocks or similar working parts and to prevent noise
I may use pinions or discs made of other suitable material than metal, such as
rubber or compressed fibre. When rubber is used I make the pinion rather larger
than the metal pinion so as to take pressure in an opposite and corresponding
groove and thereby dispensing with the necessity for using teeth, the weight
carrying sheave holding its spindle firmly on to the anti-friction wheel and the
rubber pinion, preventing slip or loss of motion in said anti friction wheel
bearing.
The invention is fully illustrated in the accompanying drawings where

page_text: pinion with suitable toothed gear said gear consisting of convex and concave
surfaces in rolling or working contact on the peripheries of the wheels.
Figure 2 is an end view of same.
Figure shows the axle of the weight carrying sheave fitted. with a pinion
working in a groove in the anti-friction wheel, which groove is fitted with knuckle
gear to engage with said pinion.
Figure 4 shows the axle of the weight carrying sheave fitted with a rubber or
compressed fibre pinion, or disc working in a groove formed on the antifriction
wheel.
Similar letters of reference indicate corresponding parts.
A. is the weight carrying sheave, B the spindle of same, C the pinion fitted or
cast on said spindle, D the antifriction wheel, E the toothed gear or groove in or
with which the pinion C works.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare what I claim is
:-
1. The combination of gear wheels attached to ends of spindles of the weight
carrying sheave, operating and working with similar gear attached to weight
bearing antifriction wheels to prevent slip, substantially as set forth and
described.
2. The combination of tight fitting pinions or discs on the spindle ends of the
weight carrying wheel or sheave, made of rubber or compressed fibre, operating a
weight bearing antifriction wheel to prevent slip, substantially as set forth and
described.
Dated this 24th day of June 1892.
WILLIAM JOHN BREWER.