Improvements in Blind Cord Racks.
Year: 1894

page_text: Date of Application, 5th Nov., 1894-Accepted, 15th Dec., 1894
Improvements in Blind Cord Racks.
We ALFRED EDWARD HARRIS and HOWARD JOSEPH LUCKOCK trading as
A. E. Harris & Co. of 95 Camden Street Birmingham in the County of Warwick.
Brass Founders 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 has for its object improvements in blind cord racks by which the
pulley slide can readily be moved either up or down without the necessity when
requiring to move it up of first withdrawing the slide from the bottom and then
sliding it down to the required position from the top as is necessary with most other
racks. The ratchet motion in our racks is also quicker and more certain in action
and can be much more readily operated than those hitherto in use.
In order that our invention may be clearly understood and more easily carried
into practise we have appended hereunto a sheet of drawings upon which we have
fully illustrated the nature of our said invention.
Figure 1 is a front elevation of one of our improved racks.
Figure 2 is a vertical section through the rack pulley.
Figure 3 is a side elevation of the pulley slide when detached from the rack.
Figure 4 is an end elevation of the pulley and slide.
Figure
5 is an end elevation of the slide applied to the racks E¹ or E.
In carrying our invention into effect we form the slide piece a¹ upon the centre
of which we mount the pulley A to revolve upon the pivot a² of the button a².
Within the slide piece a¹ I pivot the pawl B at the point b' which is out of centre
with the pulley by which means the pull of the cord indicated by arrow X has a
tendency to raise the one end of the slide piece a' as shewn by arrow Y thereby
pressing the point 6 of the pawl firmly against the serrations e₁ of the rack in the
direction indicated by arrow Z.
To retain the point 6 of the pawl against the serrations of the rack when the
cord is not upon the pulley and to assist when it is we provide the spring D which
is rounded off at d¹ so as to slide over the serrations in either direction. The
pawl B is provided with the enlarged and convex rounded head 6 pressure of which
enables the point of the pawl to be raised clear of the rack and thus allow the slide
to be slid up or down to any point as may be desired.
We may vary the form of the rack frame E by using the forms shewn by E
and E Figure 5 in which case instead of the slide a¹ being formed to slide within
the frame E it would be so turned over at its edges as to slide upon them
as shown by Figure 5,the point of the pawl being modified in shape to suit the
perforations e³.
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.
1st. The improvements in blind cord racks substantially as and for the purpose
herein set forth and shewn upon the accompanying drawings.

page_text: 2nd. In blind cord racks the pivot b¹ of the pawl B arranged so as to be out of
centre with the pulley substantially as and for the purpose herein set forth and
shewn.
Dated the 3rd day of November 1894.
ALFRED EDWARD HARRIS.
HOWARD JOSEPH LUCKOCK.