Improvements in a Rack Pulley.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in a Rack Pulley.
JOHN JEWSBURY, 72, Broad Street, Birmingham, Cabinet Brass Founder, do
hereby declare the nature of this invention to be as follows:-
The object of my improvements in a rack pulley, is an improved means,
whereby the holding & adjusting of the cord, of the roller blind, is quickly &
effectually manipulated. In carrying out my improvements in a rack_pulley,
I cut from a sheet, of metal, a longitudinal strip. This strip, or bland, I stamp
into a ratchet plate, with serration's, or indentation thereon, its ends are so
formed in the usual way, with their screw holes, that the body of the plate
stands, when upon the window frame, a little distance therefrom. I make a
guide slide, on its base, at right angle, are two winged arm's, to carry the cord
pulley, in front of the base plate, between the winged arms, is a bent catch
to engage itself in the indentations upon the ratch plate, the bent catch is
part of the base plate. The back of the base plate, at its other end, on each
side thereof, the metal is bent over to form a tapering groove which is a
little deeper, at its opening, & allows more play, when lifting the catch upon
the rack. Operation My improved rack pulley, being in position, upon the
window casement, & the cord of the blind roller, round the pulley. To adjust
the cord, you have only simply to lift the catch, & push it into the indentation
upon the rack, & the cord of roller blind is held firmly. It is understood, any
mere modification that may be required in carrying out my invention I shall
adopt.
J. T. B. BENNETT,
5, Albert Street, High Street, Birmingham,
Agent for the Applicant.
JOHN JEWSBURY, 72, Broad Street, Birmingham, Cabinet Brass Founder, 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:―
The object of my improvements in a rack pulley is an improved means
whereby the holding, & adjusting of the cord, of the roller blind, is quickly,
& effectually manipulated. In carrying out my improvement in a rack pulley,
I cut from a sheet of metal, a longitudinal strip. This strip, or blank, I stamp
077

page_text: into a ratchet plate, with serrations, or indentations thereon-its ends are so
formed, in the usual way, with their screw holes, that the body of the plate,
stands, when upon the window frame, a little distance therefrom-I make a
guide slide, on its base at right angles are two wing arm's to carry the cord
pulleys in front of the base plate, between the winged arm's is a bent catch, to
engage itself in the serration's or indentation's upon the ratchet plate, the bent
catch, is part of the base plate. The back of the base plate, at its other end,
on each side thereof, the metal is bent over to form a groove, which is a little
deeper, at its opening, & allows more play, when lifting the catch upon the rack.
Operation. My improved rack pully, being in position upon the window case-
ment, & the cord, of the blind roller, round the pulley. To adjust the cord, you
have only simply to lift the catch, & push it into the serration or indentation
upon the rack, & the cord of the roller blind, is held fast. It is understood any
mere modification, I shall adopt that may be required, in carrying out my inven-
tion. In order that my invention, may be fully understood, I will more par-
ticularly describe it, with the aid of the accompanying drawings in which
similar parts are marked with like letters of reference.
Figure 1 represents my improved rack pulley, ready to be fixed upon the
casement. Figure 2 represents a large side elevation, showing slide groove,
catch & pulley.
a racket plate, 6 guide plate, c catch engaged itself in the serrations in
ratchet plate, e wing arms to carry cord pulley, d cord pulley, f grove in guide
plate, serrations, screw hole on ratchet plate, i cord.
Having now particularly described & ascertained the nature of my said
invention, & in what manner the same is to be performed, I declare that what
I claim is:-
1st. A rack pulley, as set forth, described & illustrated in the accompanying
drawing, as represented at Figure 1.
2nd. The arrangements & combination of the ratch plate, with the grooved
guide plate, having catch, winged arm's to carry the cord pulley for the purpose
set forth.
Dated this 15th day of 1000
J. T. B. BENNETT,
5, Albert Street, High Street, Birmingham,
Agent for the Applicant.