IMPROVEMENTS IN ATTACHMENTS OR APPARATUS APPLICABLE TO ROLLER BLINDS, MAP, AND OTHER. WINDING-UP ROLLERS
Year: 1876

page_text: LETTERS PATENT to John Day, of Alma Street, Kentish Town, in the County
of Middlesex, for the Invention of "IMPROVEMENTS IN ATTACHMENTS OR
APPARATUS APPLICABLE TO ROLLER BLINDS, MAP, AND OTHER. WINDING-UP
ROLLERS."
led the 21st December 1876, and dated the 28th July 1876.
PROVISIONAL SPECIFICATION left by the said John Day at the Office of the
Commissioners of Patents on the 28th July 1876.
JOHN DAY, of Alma Street, Kentish Town, in the County of Middlesex. "IM-
PROVEMENTS IN ATTACHMENTS OR APPARATUS APPLICABLE TO ROLLER BLINDS,
MAP, AND OTHER WINDING-UP ROLLERS."
This Invention has for its object improvements in tension attachments to the
endless cords of roller blinds, maps, and other winding-up rollers.
For this purpose I put tension upon the endless cords of blind rollers, maps, and
other winding-up rollers by means of a pulley mounted on one end of an elastic,
india-rubber, or other spring, the other end of which is fixed by a screw or other-
wise to the window frame or wall on which the roller is mounted.
In carrying out my improvements I cover the tubular or solid spring employed
with wool, silk, or other braid, or other materials, if desired, to suit the character of
the furniture of the room in which it is used. The ends of the springs are inserted
into sockets, and the pulley over which the endless cord passes is mounted upon a
flat plate or surface, which serves to maintain the spring attachment in correct
position when in use. Or it may be arranged with a guide or guides if desired.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Day in the Great Seal Patent Office on the 26th January 1877.
JOHN DAY, of Alma Street, Kentish Town, in the County of Middlesex. "IM-
PROVEMENTS IN ATTACHMENTS OR APPARATUS APPLICABLE TO ROLLER BLINDS,
MAP, AND OTHER WINDING-UP ROLLERS."
My Invention relates to an improved combination and arrangement herein-after
described of the parts of tension pullies for the cords and rollers of window blinds,
maps, and other winding-up rollers, whereby great simplicity in adjusting the
[Price 4d.]

page_text: position of the pulloy on the window sash or frame for the purpose of keeping or
holding window blinds, maps, and similar articles always in the desired position.
In constructing a tension pulley according to my Invention I employ an elastic
braiding of wool, silk, satin, or other material in conjunction with an india-rubber,
metal, or other spring, to one end of which spring is attached a metal or other
bracket carrying an axis and pulley wheel, around which the endless cord may
be freely passed. To the other end of the spring is attached another metal or other
bracket, through the lower part of which an ornamental or other screw is passed in
fixing it to the window sash or frame.
Having explained the nature of my Invention I will proceed to describe with
reference to the accompanying Drawing the manner in which the same is to be
constructed and used.
Figure 1 represents in front elevation, and Figure 2 in side elevation, a tension
pulley and attachment suitable for a window blind, map, or other roller.
Figures 3 and 4 are front elevations of the top and bottom brackets, and Figures
5 and 6 side elevations of the same.
Figure 7 is the ornamental screw that fixes the whole apparatus to the window
sash or frame.
Figures 8 and 9 are ferrules for covering the fastening of the elastic braided
spring to the metal brackets.
Fig. 10 is a transverse section of the elastic spring.
One end of the braided spring a is passed over the metal bulb A fixed to the
bracket A', and the other over the bulb B fixed to the bracket B', both are firmly
bound with copper or other wire, and the ferrules C are then forced or slid over
the binding to add to its security and to give finish to the apparatus, The endless
blind cord having been passed over the pulley e the lower bracket B¹ is depressed
until the spring a stretches about one inch, and is then fastened to the window
by means of the ornamental screw d and by these means a tension is put upon
the blind cord which remains the same at all times and in all atmospheres.
Having now described the nature of my Invention, and the manner in which
the same is to be constructed and used, I wish it to be understood that I do not
claim any of the parts separately, nor do I limit myself to the precise details
herein described and illustrated, as the same may be varied without departing from
the nature of my Invention; but what I claim is the improved arrangement, com-
bination, and construction of tension pulleys or attachments for the cords of window
blinds, maps, and other winding-up rollers, in which an elastic braiding is com-
bined with an india-rubber, metal, or other spring, and also in the method of
securing the various parts together, whereby a complete automatic action is
obtained together with adaptability of colour and material to articles of upholstery,
also in the simplicity of fixing the same to the window frame or other fixture,
substantially as hercin described and illustrated in the accompanying Drawings.
In witness whereof, I, the said John Day, have hereunto set my hand and
seal, this Twenty-third day of January, in the year of our Lord One
thousand eight hundred and seventy-seven.
Witness,
J. G. TONGUE,
Patent Agent,
34, Southampton Buildings,
Chancery Lane, W.C.
JOHN DAY. (LS.)