Year: 1887

page_text: Date of Application, 28th June, 1887
Complete Left, 28th Mar., 1888
Complete Accepted, 11th May, 1888
WILLIAM FRASER Engineer 49 Oxford Road Finsbury Park London, N. do hereby
declare the nature of this invention to be as follows:-
Plate, A. in Figure II has two small brackets B & C resply--each having
a small hole a little less in diar than screw, D. Screw, D. being reduced at each
end to fit the said holes & works in them. The brackets B & C. are struck out of
the plate, A. & screw,
D. is sprung into its place. E. is a milled head about " or
thereby in diamr, & is attached to the bottom end of, D. for the purpose of causing
nut F. to travel when E. is revolved. F. is screwed to fit, D. the inside end of same
being utilised as a shaft for pulley, G. to work upon. The pulley can be put in front
or behind screw, D. or at either sides of it-that is it can be wrought in four different
ways if desired.
Figure II shews a front & side section with pulley, G. on the
inside end of nut, F, i. e. the pulley is between screw, D. & plate, A. Screw, D.
is about " or thereby in diar & screwed all the length between the
brackets, B & C the rack is fixed by means of screws thro plate, A. & wrought
by a cord in the ordinary way.
Figures III & IV shew front & side sections resply. Plate, A. & brackets B & C
& screw, D. being identically the same as in figure II the only difference
being that the screw is rivited & is permanent between the brackets B & C
instead of revolving by milled head as in Figure II & that the pulley & the bracket F 1
are made to travel by causing nut F. to revolve, which is simply a nut about "
diar in about " thick & millid on the outer edge & screwed internally to
fit D. A side view of the bracket & pulley is shewn in Figure V the pulley &
bracket as shewn in Figure IV are the same as in figure V. The pulley & bracket
in Figure III are the very same as in figures IV & V with the exception that the
pulley is placed and wrought at either side of the bracket instead of being placed
behind, D. or between, D. & plate, A. by placing the pulley in the side position no
twist is caused on the cord, by the pulley being placed between the screw D. & the
plate, A. a half twist is caused upon the cord.

page_text: Figure I shews a front section & is identically the same as Figures III & IV
&V with the exception that nut, F. being about double the depth, the milled
head of same being below the bracket, the upper end of the nut having a flange which
revolves or works in a small recess in the pulley bracket & causing same to travel
when the nut is revolved. F 2 is a drawing of the nut, the smaller end of it being the
part that carries the bracket and causes it to travel.
Advantages. The racks can be made or struck up out of ordinary material & can
be made to either work from the front, back or either of the sides & can therefore be
offered to the public at a very low price on account of all the parts being struck instead
of being cast in the ordinary way.

page_text: I, WILLIAM FRASER of 49 Oxford Road, Finsbury Park London, N. Engineer
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 what are commonly known as rack pulleys, over which the
cords of window blinds, pass, and by means of which, they are adjusted, as hereinafter
described.
Figure 1 represents in front elevation, a window blind cord rack, constructed
according to my invention. Figure 2 is a longitudinal vertical section of the same,
with the traversing screw in elevation. Figure 3 is a side elevation, showing the
position of the pulley, in respect to the carrier slide. Figure 4 represents a transverse
section upon the dotted lines A B figure 1. Figure 5 is a plan of the pulley carrier
slide, showing the bearing hole, wherein the milled head, or scrow box, works. Figure 6
is an end elevation of figure 5, and figure 7 is a front and edge view of the blank for the
attachment plate; the dotted lines represent parts which are subsequently pierced, and
raised into brackets for supporting the ends of the screw axis.
a is an attachment plate of the cord rack, fashioned from a sheet metal blank
figure 7; and 6 is a screw axis, supported and fixed at its two ends by upright brackets a²,
made from the blank a.
Thus, the blank is pierced as represented in the dotted lines figure 7, and with the
said pierced parts, raised vertically into brackets, which are pierced with holes, a little
less in diameter than the screw b.
b
c is a carrier slide, with its underside resting upon the top face of the attachment
plate a. This carrier slide, has a gapped bridge piece c², through the gap c³ of which,
a screw box or milled nut d works, and with the screw 6 passing through its middle.
The gap c³, forms a bearing for the said nut, which on being rotated, causes the slide c
to reciprocate and carry with it, the pulley e, which works upon an axis e², carried by
a single upright bracket bearing c¹, as best seen in the sectional view, and end
elevation, figures 4 and 6.
The slide c and pulley carried by it, is guided vertically by the semi-circular bridges
of the parts c², which slide upon the wormed axis.
On the cord frequiring to be adjusted, the screw box or milled nut d is rotated,
either to the right, or to the left, when the same runs up or down the screw stem b, and
carries with it, the carrier c, c, c3 and pulley e, thereby tightening or slackening the
cord, as may be desired.
Figure 8 represents a modification of the window blind cord rack, as aforesaid. In
this form, the pulley is arranged centrally, with respect to the wormed axis, and with
the said pulley, lying behind the said axis.
a is the attachment plate, b is the fixed screw, secured between the upright brackets a²,
d is a milled nut or screw box, wherethrough the screwed axis b, passes, and which
works within a bearing recess, cut out of an arched or raised part c², of a carrier
slide c.
e is a pulley, turning upon an axis e³, secured at its inner end to the slide c; so that
by turning the milled nut or screw box d, the pulley is raised or lowered, and the cord
adjusted accordingly.
Figure 9 represents a side elevation of the said figure 8.

page_text: It will be seen that the carrier is guided vertically, by the semi-circular arched
parts c², moving upon the screw axis as a guide.
Figure 10 represents another form of my invention, in which the screw is made to
raise and lower the carrier, instead of the milled nut or screw box as aforesaid.
Figure 11 represents a side elevation of the said figure 10, with the pulley thereof in
section.
a is the attachment plate, b is a screw axis with its ends, working within bracket
bearings a², raised from the metal of the attachment plate a.
d is a screw box, wherethrough the wormed axis b, passes, and which screw box has
an inwardly directed axis e², upon which the pulley e turns as a centre.
The screw box and pulley is prevented from making a lateral movement by the
inside face of the said pulley, sliding upon the top face of the attachment plate a.
The lower end of the screw axis b, has fixedly secured to it, a milled head b², by
the rotation of which, its axis is turned, and the screw box d, 2, and pulley e raised
and lowered.
Figure 12 represents another form of my invention, in which the inner end of the
carrier, is made into a slido, which works within a longitudinal gap, cut within the
middle of the attachment plate. Figure 13 represents a transverse section of the said
figure 12, and upon the dotted lines CD.
a is the attachment plate, b is a fixed screw, carried by end brackets a². c is a carrier,
with its outer end encircling the collar d², of a milled nut or screw box d, which works
upon the screw b.
e is a pulley, turning upon an axis c², whose inner end carries a dovetail slide c³,
which works within a like dovetail slot, running up the middle of the base a ; so that
by rotating the nut or box d, the pulley e is raised or lowered, and prevented from
turning, other than upon its own axis, by the slide c³, working within the slot a³.
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 :-
First. Adjusting the pulleys of blind cord racks, by a screw nut or box, working
upon a fixed screw, and within a gapped bearing of a carrier slide, whereby the said
pulley is raised and lowered, as set forth in figures 1, 2, 3 and 4.
Secondly. Mounting and carrying the pulleys of blind cord racks, upon a slide,
arched and gapped, for the purpose, substantially as set forth in figures 1, 2, 3 and 4.
Thirdly Making the attachment plates, and their upright brackets, of blind cord
racks, as herein described, out of a single blank or piece of sheet metal, as set forth.
Fourthly. The improvements in the construction of blind cord racks, consisting of
an attachment plate a, a², fixed screw b, carrier c, c², screw nut or screw box d, and
pulley e, e, arranged and working, substantially as set forth in figures 8 and 9.
Fifthly. A blind cord rack, consisting of an attachment plate a, a², a³, fixed
screw b, carrier and slide c, c², c³, screw nut with collar d, d², and pulley e, arranged
and working, substantially as set forth in figures 12 and 13.
Lastly. A window rack pulley, consisting of an attachment bracket a, screw b,
working within end bearings a, and passing through a screw box d, d², upon the
latter of which, a pulley d, disposed between the underside of the screw, and top face
of the attachment plate, turns; and which said parts, are constructed, arranged and
work, substantially as set forth in figures 10 and 11.
Dahi Tu seth day of March 1888