Improvements in Sash and like Pulleys and Rollers.
Year: 1894

page_text: Date of Application, 9th Feb., 1894--Accepted, 7th Apr., 1894
COMPLETE SPECIFICATION.
Improvements in Sash and like Pulleys and Rollers.
I, FRANCIS JOSEPH JAMES GIBBONS, of St. John's Works, Church Lane,
Wolverhampton, in the County of Stafford, Lock Manufacturer, 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
stateinent :-
My invention relates to improvements in devices for diminishing the friction in
door or sash pulleys and rollers and other pulleys and rollers used for analogous
purposes and under analogous circumstances. It consists in a novel combination
of rotary bearing surfaces or antifriction rollers for the axle ends of the line
pulleys or of the pulleys which directly bear the weight.
In order that my invention and the means by which it is to be carried into
practical effect may be thoroughly understood, I will now describe it and them in
detail, referring in so doing to the accompanying figures which are to be taken as
part of this Specification and read therewith.
Figure 1 is a sectional elevation taken on. the line 1-1 of Figure 2.
Figure 2 is a front elevation of an axle pulley constructed according to the
present invention.
Figure 3 is a sectional elevation taken on the line 3-3 of Figure 2.
It is to be distinctly understood that the invention is not limited to the pulleys
of window sashes but is equally applicable to all pulleys or rollers for bearing the
weight of sashes, doors or the like. I have chosen for illustration, the embodiment
of it in a window-sash pulley because the latter is so familiar an object to those
whom the invention concerns or may concern.
u, a are the face and cheeks; b, 6 the pair of line pulleys; c, c their axlé
ends, d, d the bearings of the latter, and e, the sash line; all of the same con-
struction as heretofore. The window sash is omitted from the figures to
economise space on the sheet.
In any
are a pair of antifriction rollers. f¹is an axle common to them both and
having its bearings in the cheeks of the pulley as heretofore. These rollers are
uniform in size, and are, preferably, made in one piece with their axle, or otherwise
made fast to it; but on this latter point my invention does not limit me.
case, they stand respectively under the axle ends, c of the line pulleys, one under
one pair, and one under the other, the axis of the axle f' being equidistant from
the respective axes of the axle ends c, c. The diameter of a roller fis several
times say six-that of the axle. The diameter of the axle ends
the axle is the same, or about the same, as that of the axle ends c.
those of
The bearings of the said ends c are shaped so as to allow the latter to drop
under the weight they have to carry, as heretofore, but, according to the present
invention, this drop brings the said ends upon the peripheries of the antifriction
rollers, and not their peripheries upon those of the latter as has previously been
done.
My invention includes the use of the antifriction roller upon only one side of
the line pulleys.
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 that what I
claim is :-
:-
The hereinbefore described combination of one or more rotary surfaces or the

page_text: peripheries of one or more antifriction rollers with the axle end or ends of the
pulleys or rollers which directly bear the weight, as set forth.
Dated this 9th day of February 1894.
PHILLIPS & LEIGH,
22, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.