Improvements in or connected with Pulleys for Window Blinds.
Year: 1894

page_text: Date of Application, 10th Nov., 1894-Accepted, 15th Dec., 1894
COMPLETE SPECIFICATION.
Improvements in or connected with Pulleys for Window Blinds.
We, THOMAS WILLIAM TIDMARSH and FREDERICK CHARLES TIDMARSH,
trading as Tidmarsh & Sons, of 226, Upper Street, Islington, in the County of
London, Window Blind Makers, 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:—
Our invention relates to improvements in pulleys for window blinds whereby
when a blind with the pulleys thereon is fixed in position it will be impossible to
bring the said pulleys into contact with the surface to which the blind is fixed and
thereby interfere with the proper operation of the same, and for the cords to jump
off the pulleys.
According to our invention one, two or more pulleys is or are mounted upon an
axis carried in a frame and upon the said frame are formed flanges which project
above the top of the pulley or pulleys to such an extent that they will ensure
that the said pulley or pulleys shall not touch the surface to which the blind is
fixed.
To enable our invention to be fully understood we will describe the same by
reference to the accompanying drawing, in which :-
Figures 1, 2 and 3 are respectively a side elevation, an end elevation and a plan
of a single blind cord pulley provided with our improvements:
Figures 4 and 5 are similar views to Figure 3 but shewing double pulleys and
triple pulleys respectively:
Figure 6 is a section shewing the pulleys applied to the pulley head of a blind;
and,
Figure 7 is a section on the line 7-7, Figure 6.
a, a are the ordinary sheaves or pulleys over which the blind cords run, and b is
our improved frame in which the pulleys are mounted, the pulleys being carried
upon an axle c supported in lugs d, d on the underside of the frame.
e, e are the flanges which we form on the upper side of the frame b, the said
flanges, as shewn, having their upper surfaces curved to a circle concentric with the
pulleys. It will be readily seen by reference to Figure 7 how these flanges prevent
the pulleys from coming into contact with the surface against which they are fixed,
the said Figures 6 and 7 representing double pulleys fixed to the pulley-head of
a blind.
As shewn in the drawings, the frame b is formed not only with front flanges but
with side flanges f, f having holes for the fixing screws; the said flanges, however,
also serve to cover the edges of the mortise thus ensuring a better finish than
without such flanges.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. In pulleys for window blinds, forming the frames thereof with flanges pro-
jecting beyond the peripheries of the pulleys on the upper sides of the frames,
substantially as, and for the purposes, described.
2. In pulleys for window blinds having upwardly projecting flanges arranged as
described, forming the frames with laterally projecting side flanges such as f, fas,
and for the nurnose described

page_text: 3. The manufacture and use of the improved window blind pulleys hereinbefore
described and illustrated in the several figures of the accompanying drawing.
Dated this 10th day of November 1894.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.