Year: 1888

page_text: Date of Application, 26th Mar., 1888
Complete Specification Left, 4th Oct., 1888
Complete Specification Accepted. 9th Nov., 1888
CHARLES JAMES WATTS, 29, Tipthorpe Road, Lavender Hill London S.W. Engineer
do hereby declare the nature of this invention to be as follows:―
This invention consists of a method of controlling the motion of Roller Blinds,
by means of a Tension Spring-of Rubber or metal-attached to any endless Blind
Cord, & secured to the Window frame, or other convenient part of Building.
The Tension Spring, is attached to the endless cord by means of an open Hook at
one end of spring & the opposite end of spring is secured to the fixed Woodwork by a
screw-eye or wood screw-or as may be most convenient.
The open Hook is of sufficient size to allow the endless cord to pass freely through
this Hook-which being open allows of ready attachment to any endless cord-without
cutting & rejoining such Cord.
The Blind is controlled by the Tension given to the spring-when being fixed-
more or less Tension being given-according to the weight & size of blind and all
motion of the blind is automatically controlled by the action of the aforesaid Spring.
Dated 26th day of March 1888
CHARLES JAMES WATTS.

page_text: COMPLETE SPECIFICATION.
Improvements in Fittings for Window or other Roller Blinds.
I, CHARLES JAMES WATTS of 29 Tinthorpe Road Lavender Hill Wandsworth in the
County of Surrey, 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 consists of an improved method of controlling the motion of roller
blinds, by means of a tension spring of india rubber or metal, which can be readily
attached to any endless blind cord. It can be secured to the window frame or any
other suitable part of the room by means of a screw-eye, hook or nail or in any other
convenient way.
The tension spring may consist of a plain loop, band, or elongated ring of rubber
and may be either flat, round, or square, in section, or, it may be made of solid rubber,
or of a piece of rubber cord, with the ends fastened together.
When made of metal it would be formed of wire twisted into a close spiral spring
and of different guages of wire according to strength required.
In order to attach it to the window frame a loop is formed at one end, and to this
loop a neat driving eye, or screw eye, or hook is attached which can be easily fixed
into the wood in the ordinary way.
At the other end there may be a hook with opening sufficient to receive the cord, or
if preferred the wire forming the hook is prolonged and a double loop, or double ring
or split ring is formed, which allows the endless cord to pass freely through, but does
not allow it to escape too easily.
Around the centre of the spiral spring a small ferrule is placed, and is held in
position by projecting points which pass through the coils of the spring. This ferrule
is intended for ornament, and to carry the inscription denoting that the Spring, is
Patented.
The blind is controlled by the tension given to the spring when it is fixed, more or
less tension being given according to weight and size of blind, and the movements of
the blind are automatically controlled by the action of the aforesaid spring. The
amount of tension is easily adjusted by the distance at which the spring is fixed..
In the accompanying drawings,
Fig. 1 shews an india rubber tension spring.
Fig. 2 shews a metallic wire ditto.
A is the spring.
D
1.

page_text: D is the ferrule.
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.
In a window blind action, or blind-cord holder, the tension spring of rubber or
metal with fittings substantially as herein described and set forth.
S. S. BROMHEAD,
97, Newgate Street, E.C.,
Patent Agent.