IMPROVEMENTS IN WINDOW BLIND ROLLERS AND PARTS CONNECTED THEREWITH
Year: 1883

page_text: LETTERS PATENT to Henry Alford Walker of N° 26 Prah Road Finsbury
Park in the County of Middlesex for an Invention of IMPROVEMENTS IN
WINDOW BLIND ROLLERS AND PARTS CONNECTED THEREWITH
PROVISIONAL SPECIFICATION left by the said Henry Alford Walker at
the Office of the Commissioners of Patents on the 9th April 1883.
HENRY ALFORD WALKER of N° 26 Prah Road Finsbury Park in the County of
Middlesex IMPROVEMENTS IN WINDOW BLIND ROLLERS AND PARTS CONNECTED
THEREWITH,
This Invention consists of a device to hold window blinds without the use of
springs or ratchet wheels as heretofore used, and is shown in the accompanying
drawings of which
Fig. 1. is a side elevation and
Fig. 2. an end elevation.
This invention is composed of a lever A usually attached to the bracket B working
on a screw or pin C one end of said lever is provided with a pad or roller D, which
may be composed of leather rubber wood or any other known substance for
producing friction and may be made to revolve on a pin E which on being released
by the cord J falls of its own weight into contact with the flange G composing part
of the spool G¹ and produces a friction which holds the blind at any desired position
and yet allow the blind to be drawn down by hand. The roller or pad D revolving
in frictional contact with the flange G. The bracket may be provided with a
screw H to act as a stop for the lever A and to regulate the pressure or friction in
case of wear The other end of the lever is provided with an eye F through which
the cord passes for raising or lowering the blind as desired.
The bracket B may be placed in any required position, but in all cases the friction
lever A must be arranged on the bracket B or otherwise so that the friction pad or
roller D on the end of the lever A will fall into frictional contact with the flange G
of the spool G'.
The pin C on which the frictional lever A works and the friction pad or roller D
when in working position are a little to one side or eccentric to the axis of the
roller K about 7th of an inch more or less, in order to cause the requisite friction
to hold the blind in any desired position.
This invention is also applicable to Maps Plans and other similar purposes.
The accompanying drawings are sufficiently plain to show the nature of the
improvement without further description.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Henry Alford Walker in the Great Seal Patent Office on the
8th October 1883.
HENRY ALFORD WALKER of N° 26 Prah Road Finsbury Park in the County of
Middlesex: "IMPROVEMENTS IN WINDOW BLIND ROLLERS AND PARTS CONNECTED
THEREWITH:"
This Invention consists of a device to hold Window Blinds without the use of
springs or ratchet wheels as heretofore used, and is shown in the accompanying
drawings of which-Fig. 1. is a side elevation
Fig. 2. an end elevation and
Fig. 3. is a view of the lever detached.
This Invention is composed of a lever A usually attached to the bracket B
working on a screw or pin C, one end of the said lever is provided with a pad or
roller D which may be composed of leather, rubber, wood or any other known
substance for producing friction and may be made to revolve or remain stationary
on a pin E which on being released by the cord J falls of its own weight into
contact with the flange G composing part of the spool G' and produces a friction
which holds the blind at any desired position, and yet allow the blind to be drawn
down by hand. The roller or pad D revolving in frictional contact with the
flange G.
The bracket may be provided with a screw H to act as a stop for the lever A. and
to regulate the pressure or friction of the roller D on the flange G and in cases of
wear. The other end of the lever A. is provided with an eye F through which the
cord J passes for raising or lowering the blind as dosired.
The bracket B may be placed in any required position but in all cases the friction
lever A must be arranged on the bracket B or otherwise so that the friction pad or
roller D on the end of the lever A will fall into frictional contact with the flange of
the spool G'
The pin C on which the frictional lever A works and the friction pad or roller
D when in working position are a little to one side or eccentric to the axis of the
roller K about 1/8th of an inch more or less, in order to cause the requisite friction
to hold the blind in any desired position:
The rollers K. may be arranged to work in brackets E of any desired design and
the brackets can be attached to the vertical portion of the window frame or to the
top of the frame if desired. By preference the lever A is so arranged to the
brackets B that the frictional roller D is made to act by gravitation on the top
portion of the frictional flange G as shown in Fig. 2. however if required the lever Â
may be placed in other relative positions to the friction flange G, that is to say, the
lever A'may be attached, to the bracket so as to cause the frictional roller D to work
on any desired part of the periphery of the friction flange G.
The improvement is also applicable to Maps Plans and other similar purposes
when placed on rollers :.
The accompanying drawings are sufficient plain to a person versed in the Art to
show the nature of the improvement without further description:
Having now described the mode of making and working my Improvement,
What I claim as new and desire to secure by Letters Patent is.
1. In a window blind or other roller-the use of a friction pad or revolving
roller D composed of leather, rubber, wood, or other similar substance acting in
frictional contact with the flange G substantially as described and shown for the
purpose specified :

page_text: 2. In a window blind or other roller the use of the lever A in combination with
a friction pad or revolving roller D composed of leather rubber wood or other
similar substance substantially as described and shown for the purpose specified :
In witness whereof I the said Henry Alford Walker have hereunto set my
hand and seal this fifth day of October in the year of Our Lord 1883