IMPROVEMENTS IN WINDOW-BLIND ROLLERS AND IN FITTINGS FOR THE SAME
Year: 1886

page_text: I WILLIAM HENRY KEATES of the Grosvenor Boarding House, Chine Crescent,
West Cliff, Bournemouth, Waiter, do hereby declare the nature of my said Inven-
tion for "IMPROVEMENTS IN WINDOW-BLIND ROLLERS AND IN FITTINGS FOR THE
SAME " to be as follows:-
L
I use a roller of octagonal form in cross section, divided in halves longitudinally.
On the flat side of one half is formed a central longitudinal groove extending
throughout its length and the two halves of the roller are hinged together. . A lath
which fits in the before-mentioned groove is run through a hem in the top of the
blind, and the said lath with the blind thereon is then inserted in the said groove.
The roller is then closed and secured in that condition by a cap fitted on each end.
One of the said caps is formed with a double reel or pulley, cast in one piece and
each of the said caps has a projecting pin or pivot. The said pins or pivots fit into
tubular sockets secured to the window frame. The socket at the other end of the
roller to that on which the cap with the double pulley is fitted, contains a plate or
disc and a spiral spring between the said plate or disc and the window frame to
which the socket is secured. The said spiral spring presses the said plate or disc
to the forward end of the socket, the said plate being retained therein by a notch
formed in the said socket. When the pins or pivots of the roller are inserted in
the sockets, the before-mentioned spring keeps the outer end of the reel or pulley
on the other end of the roller, in contact with the end of the tubular socket and
produces sufficient friction between the said pulley and socket to retain the blind
in any desired position. The blind is raised or lowered by a cord, one end of which
is secured to each reel or pulley in such a manner that the cord winds upon the
said reels or pulleys in reverse directions, the cord being wound upon one reel by
being unwound from the other. The cord hangs from the said pulleys in a loose
loop. The cord is retained on the pulleys by a wire projecting from the socket, on
each side of the said pulleys.
°

page_text: The sockets having been fixed to the window-frame, the pivot e¹ of the roller is
inserted into the outer end of the hole h in the socket h and pressed against the
disch which gives sufficiently to allow of the other pivot f' of the roller being
inserted in the socket g'. When the roller is in its place the pressure of the
spring he against the disc h³, acting upon the pivot e¹ of the roller will keep the
faces of the double pulley f' and boss g¹ of the socket g in close contact as shown
in figure 1 causing sufficient friction between the surfaces of the said reel and
socket to sustain the blind.
The blind is operated by the cord i, one end of which is secured to each reel fl.
so as to wind thereon in reverse directions. Thus when the cord is pulled off one
reel to raise the blind, it winds itself upon the other reel, off which it is pulled
when it is desired to lower the blind. The socket g has a projecting arm g³ on each
side of the double reel f¹ and each half of the cord i works through a hole in one
of the said arms and is thus guided on to the reel.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
First: The combination of the roller a having dove-tail groove b, dove-tail strip c,
double reel f¹, and pivots e¹ f', with the socket h containing disc ' and spring h
and with the socket g substantially as herein set forth and illustrated in the
accompanying drawing.
Second-The socket h with disc h³ and spring he substantially as described and
illustrated in Figure 4.