IMPROVEMENTS IN INSTRUMENTS FOR JOINING BLIND CORDS AND OTHER CORDS
Year: 1867

page_text: LETTERS PATENT to Ulysse Perrenoud-Würflein, of 235°, Rue Christophe,
Berne, Switzerland, for the Invention of "IMPROVEMENTS IN INSTRUMENTS
FOR JOINING BLIND CORDS AND OTHER CORDS."
Sealed the 8th May 1868, and dated the 18th November 1867.
PROVISIONAL SPECIFICATION left by the said Ulysse Perrenoud-
Würflein, at the Office of the Commissioners of Patents, with his
Petition, on the 13th November 1867.
I, ULYSSE PERRENOUD-WÜRFLEIN, of 235, Rue Christophe, Berne, Switzer-
land, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN INSTRUMENTS FOR JOINING BLIND CORDS AND OTHER CORDS," to be as
follows:-
This Invention has for its object improvements in instruments for joining
blind cords and other cords in which elasticity and flexibility are required. I
employ to form a union between the ends of such cords two coiled springs of
wire, into the end of one of which a hook is screwed or fixed whilst the end
of the other receives a corresponding eye in a similar manner. The coiled
springs are respectively screwed on to the two ends of the cord to be joined
until the ends have entered sufficiently far into the springs to be firmly held.

page_text: The two ends of the cord thus furnished are then hooked together, and so an
endless cord is obtained which is able to pass very freely over pulleys such as
blind pulleys and the elasticity of the springs serves to keep the cord tight
upon the pulleys and to compensate for any change in the length of the cord
arising from variation in the moisture of the atmosphere.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Ulysse Perrenoud-Würflein in the Great Seal Patent Office
on the 18th May 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ULYSSE
PERRENOUD WÜRFLEIN, of 235°, Rue Christophe, Berne, Switzerland, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of November, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Ulysse Perrenoud-Würffein, Her special licence that I, the said
Ulysse Perrenoud-Würflein, my executors, administrators, and assigns, or
such others as I, the said Ulysse Perrenoud-Würffein, 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 INSTRUMENTS FOR JOINING
BLIND CORDS AND OTHER CORDS," upon the condition (amongst others) that I,
the said Ulysse Perrenoud-Würflein, 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 Ulysse Perrenoud-Würflein, 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 Invention has for its object improvements in instruments for joining
blind cords and other cords in which elasticity and flexibility are required.

page_text: I employ to form a union between the ends of such cords two coiled springs
of wire into the end of one of which a hook is screwed or fixed whilst the end
of the other receives a corresponding eye in a similar manner. The coiled.
springs are respectively screwed on to the two ends of the cord to be joined
until the ends have entered sufficiently far into the springs to be firmly held.
The two ends of the cord thus furnished are then hooked together and so an
endless cord is obtained which is able to pass very freely over pulleys such as
blind pulleys, and the elasticity of the springs serves to keep the cord tight
upon the pulleys and to compensate for any change in the length of the cord
arising from variation in the moisture of the atmosphere.
In the Drawings hereunto annexed are shown several views of an instr -
ment, such as is above described for connecting together the ends of cords;
the one shewn in the Drawing is of a size suitable for connecting together
the two ends of a blind cord.
In Figure 1 are shown two lengths of coiled springs of wire; into one end
of one of these is to be screwed a hook marked b, whilst into one end of the
other is screwed an eye c; to allow of this the screw thread on the stem of
the hook and of the eye is of a pitch to agree with the screw thread formed
by the coils of wire of the springs a; by this means a perfect joint between
the end of the coiled spring and the hook or the eye is obtained.
The
opposite ends of the coiled springs are screwed respectively on to the two
ends of the cord to be connected together, and as the diameter of the cord is
greater than the internal diameter of the coiled springs the ends of the cord
will be compressed and the coils of wire which form the springs will mould or
form a screw thread on the ends of the cord, and thus a firm joint will be
formed between the ends of the springs and the ends of the cord. The two
ends of the cord thus furnished with flexible ends, carrying hooks and eyes,
are then hooked together, as shown at Figure 2, and so as above-mentioned a
flexible and elastic endless cord is obtained.
In witness whereof, I, the said Ulysse Perrenoud-Würflein, have here-
unto set my hand and seal, this Fourth day of May, in the year of
our Lord One thousand eight hundred and sixty-eight.
ULYSSE PERRENOUD-WÜRFLEIN. (L.S.)