IMPROVEMENTS IN SPRING ROLLERS FOR WINDOW BLINDS
Year: 1860

page_text: LETTERS PATENT to Frederic Hudson, of No. 227, Blackfriars Road, in
the County of Surrey, for the Invention of "IMPROVEMENTS IN SPRING
ROLLERS FOR WINDOW BLINDS."
Sealed the 7th February 1861, and dated the 7th August 1860.
PROVISIONAL SPECIFICATION left by the said Frederic Hudson at the
Office of the Commissioners of Patents, with his Petition, on the 7th
August 1860.
I, FREDERIC HUDSON, of No. 227, Blackfriars Road, in the County of
Surrey, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN SPRING ROLLERS FOR WINDOW BLINDS," to be as follows:-
Firstly, the spring roller or barrel always maintains its charge and cannot
be overcharged.
Secondly, these improvements are accomplished by the centre rod on which
the roller or barrel revolves, having a screw cut or attached to it, and by means
of a nut to fit the screw, which nut is carried round by the barrel revolving
from one end of the screw to the other end, and being provided at each end
with a stop; one stop preventing the spring being overwound, and the other
stop preventing the spring running down too far.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Frederic Hudson in the Great Seal Patent Office on the 7th
February 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERIC
HUDSON, of No. 227, Blackfriars Road, in the County of Surrey, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventh day of August, in the year of our Lord
One thousand eight hundred and sixty, in the twenty-fourth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Frederic Hudson, Her special licence that I, the said Frederic Hudson, my
executors, administrators, and assigns, or such others as I, the said Frederic
Hudson, 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 "IMPROVEMENTS IN SPRING ROLLERS
FOR WINDOW BLINDS," upon the condition (amongst others) that I, the said
Frederic Hudson, my executors or administrators, by an instrument in writing
under my, or their, or one of their hands and seals, should particularly 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 Frederic Hudson, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, reference being bad to the Sheet of Drawings hereunto annexed,
and to the letters and figures marked thereon (that is to say) :-
My Invention of improvements in spring rollers for window blinds, has for
its object to ensure the proper action of the spring in winding up the blind by
its. being wound to a proper state of tension at the time of fixing; spring blind
rollers, as usually made, require that the spring should be coiled up to a certain
state of tension before being fixed, which is also the case after having been
taken down for cleaning the blinds or other purposes, and which, unless
performed by a practised hand, generally results in the blind being put up
in a defective state. This may either be from the spring having insufficient
tension to wind up the blind or of being overwound and affixed with an excess

page_text: wound up, and the nut G is carried along. the screw until it comes in contact
with the stop E, which prevents the spring from being overwound.
Having described the nature of my Invention, and the manner of performing
the same, I declare that what I claim as my: Invention to be protected by the
herein-before in part recited Letters Patent is, the application of the parts
herein-before described to spring blind rollers for the purpose of limiting their
springs to a proper state of tension in order to ensure their effective action and
prevent derangement, as herein-before described.
In witness whereof, I, the said Frederic Hudson, have hereunto set
my hand and seal, this Second day of February, in the year of our Lord
One thousand eight hundred and sixty-one.
FREDERIC HUDSON. (L.s.)