AN IMPROVEMENT IN ROLLER BLINDS
Year: 1854

page_text: LETTERS PATENT to David Davies, of Wigmore Street, Cavendish Square,
in the County of Middlesex, Coachmaker, for the invention of "AN
IMPROVEMENT IN ROLLER BLINDS."
Sealed the 26th January 1855, and dated the 15th November 1854..
PROVISIONAL SPECIFICATION left by the said, David Davies: at the.
Office of the Commissioners of Patents, with his Petition, on the
15th November 1854.
I, DAVID DAVIES, of Wigmore Street, Cavendish Square, in the County of
Middlesex, Coachmaker, do hereby declare the nature of the, said Invention'
for "AN IMPROVEMENT IN ROLLER BLINDS" consists in making them curvilinear
in form, so as to be applicable to the circular windows of houses, carriages,
et cetera. For this purpose I provide a fixed rod or axle of the required curve,
upon which I place the spring for rolling up the blind, and cover it with an
elastic flexible covering, instead of the tin barrel, heretofore used in straight
roller blinds. Upon the elastic barrel I aflix the blind, its lower edge being
stretched upon a rod of the same curve as the axle.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said David Davies in the Great Seal Patent Office on the
15th May 1855.
i.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, DAVID
DAVIES, of Wigmore Street, Cavendish Square, in the County of Middlesex,
Coachmaker, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifteenth day of November, in the year of our Lord
One thousand eight hundred and fifty-four, in the eighteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said David Davies, Her special licence that I, the said David Davies, my
executors, administrators, and assigns, or such. others.as I, the said David
Davies, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during
the term, therein. expressed, should and, lawfully might, make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVEMENT IN
ROLLER BLINDS," upon the "condition (amongst others) that I; the said' David'
Davies, by an instrument in writing under my hand and seal, should par-
ticularly describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed in the
Great Seal Patent Office within-six calendar months next and immediately
after the date of the said-Letters Patent.
NOW KNOW YE, that I, the said David Davies, do hereby declare the
nature of the said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement
thereof (that is to say):-
This improvement consists in making roller blinds curvilinear in form,
so as to be applicable to the circular windows of houses, carriages, et cetera..
For this purpose I provide a fixed rod or axle of the required curve, upon
which I place the spring for rolling up the blind, and cover it with an elastic
flexible covering, instead of the tin. barrel,, heretofore used in straight roller
blinds. Upon the elastic barrel I affix the blind, its lower edge being stretched.
upon a rod of the same curve as the axle.
And in order that the nature of this my-improvement may be more fully
understood, reference is had to the Drawings hereunto annexed, and to the
letters and figures marked thereon, that is to say:-

page_text: Figure 1 is a plan view of a curvilinear blind roller constructed agreeably
to my improvement; Figure 2 is a sectional view of the same; and Figure 3,
an elevation of the roller with the blind attached thereto. A is the rod or
axle, bent to the same curve as the window or other opening to which the
blind is to be applied, each end of the axle being firmly secured in a frame or
bracket; B is a pulley, with the usual pall and ratchet, and the trigger or detent
C; D is an end pulley, running free upon the axle A; E is a coiled wire
spring, one end of which is fastened to the pulley B, the other end to the axle
A; F is an elastic tube or covering, of caoutchouc or other suitable material,
the ends of which are attached to the two end pulleys B and D. The blind
is then fastened round the flexible covering tube of the roller F by stitching,
and a metal stretcher of the same curve as the roller is introduced at its lower
edge G. The yielding of the elastic covering tube F permits the blind to roll
and unroll in the same curve as the rod or axle A with as much facility as
straight spring roller blinds have hitherto done. And I desire it to be dis-
tinctly understood that the new and peculiar feature of my said improvement
in roller blinds consists in the employment of a flexible elastic covering tube,
in place of the rigid metal tube, which encloses the spring of an ordinary
straight roller blind.
Having now described the nature of my said Invention, and in what manner
the same is to be performed, I declare that what I claim as new, and consti-
tuting my Invention of an Improvement in Roller Blinds, is, the application
to the windows of houses, carriages, or other places, of curvilinear spring
roller blinds, constructed and arranged as herein-before described, and shown
in the accompanying Drawings.
In witness whereof, I, the said David Davies, have hereunto set my hand
and seal, this Eleventh day of May, in the year of our Lord One
thousand eight hundred and fifty-five.
Witness,
W. BADDELEY.
DAVID DAVIES. (L.S.)