Improvements in Roller Blind Mountings.
Year: 1896

page_text: Date of Application, 29th Jan., 1896-Accepted, 21st Mar., 1896
COMPLETE SPECIFICATION.
Improvements in Roller Blind Mountings.
I, THOMAS HENDERSON STEVENS, of 28 Leven Street, Edinburgh, in the
County of Midlothian, N.B. Window Blind Manufacturer, 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 relates to improvements in roller blind mountings and has for
its object to provide or construct mountings which may be used either as right or
left hand mountings for double sash or flush windows, as well as giving other
advantages.
In carrying out my said invention as illustrated in the accompanying drawings,
I proceed as follows;-
Figure 1 is a sectional elevation.
Figure 2 is an end view of my improvements, and
Figure 3 is an enlarged detail view showing in section the main features of my
invention.
In accordance therewith I employ the ordinary brass caps A, A' at each end of
the roller to which they are fixed by screws or otherwise. The cap A¹ being of the
ordinary type for the cord, as also its fixed or stationary plate a² and pin a. The
other cap A is provided with a ratchet wheel B, on its outside; said ratchet B
being mounted on the spindle C which according to my invention is screwed into
the cap A and retained in position by means of the nut c and formed square at e
where it passes through the collet to prevent rotation. The ratchet B may be
taken off and reversed so as to be used for either a right or left hand window by
withdrawing the pin and washer b¹. Also in accordance with my invention
I mount the pawl or ratchet catch drop D, which is pivotted to the ordinary slip
eud E of the fixed bracket F, in such a manner, that it may be reversed so as to
suit the teeth of the ratchet B, that is to say I form the pivote as a screw and
screw it into the slip end E. The said slip end E is formed with a retaining and
guiding portion G which is formed or provided with grooves g' so as to enable the
end E to be placed in and taken out of position in the stationary bracket F which
is formed with a slot or opening; said end E being retained in position in the
bracket F by means of the spring lever or catch gl which engages in one of the
notches or checks g. The object of the slip end E is to enable the roller to be
taken down or put up without disturbing the stationary brackets a² and F. The
retaining portion G is formed with two notches or checks g, so as to enable it to
be reversed or used for various kinds of windows and various modes of mounting
the bracket F. Also I prefer to make both the ratchet B and the pawl D or catch
drop, a little broader than those hitherto employed, so as to permit of the said
parts having more longitudinal play. Also I prefer to weight the front end of the
catch drop D by means of a rise or swelling on its back so as to prevent it from
standing up when the mounting is in a horizontal position and also to ensure of
the said catch drop D falling into gear with the ratchet B in any position.
Also in accordance with my invention, the ratchet wheel B and the retaining
portion G of the slip end E are preferably made of anti-friction metal so as to
withstand the tear and wear longer.
Also in order to ensure of the blind being brought closer to the side of the window,
so as to exclude more light, I dispense with the bead or raised portion on the outer
end of the cap A and I make the slip end E of the same or of a less diameter than

page_text: the diameter of the said cap A, thus ensuring of more evenly winding up of the
blind with less gap at the side. Also if desired I may dispense with the ordinary
bend or raised portion on the other cap A¹ as shown.
Owing to the spindle C being screwed the ratchet B may be easily tightened up
should it wear loose.
The whole thus forms efficient mountings for roller blinds which may be used
for either right or left hand blinds and also for double sash, flush and other styles
of windows.
My invention may also be used for double or single bracket mountings. And
the cloth may be run on the inside or outside of the roller.
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 :-
1st. The general arrangement construction and combination of the various parts
constituting my reversible roller blind mountings, substantially in the manner as
hereiubefore described and shown in the accompanying drawings.
2nd. In roller blind mountings, the screwed spindle C substantially as and for
the purposes hereinbefore described and shown in the accompanying drawings.
3rd. In roller blind mountings, the reversible ratchet B, substantially as and
for the purposes herein before described and shown in the accompanying drawings.
4th. In roller blind mountings, the reversible pawl or catch drop D, substantially
as and for the purposes hereinbefore described and shown in the accompanying
drawings.
5th. In roller blind mountings, the reversible slip end E of the bracket F sub-
stantially as and for the purposes herein before described and shown in the
accompanying drawings.
6th. In roller blind mountings, forming the caps A A¹ without beads, and
reducing the diameter of the slip end E of the bracket F, substantially as and for
the purposes herein before described and shown in the accompanying drawings.
Dated this 28th day of January 1896.
JOHNSONS,
115 St. Vincent Street, Glasgow, Applicant's Agents.