AN IMPROVED JOINTED BLIND
Year: 1860

page_text: PROVISIONAL SPECIFICATION left by Jozé Luis at the Office of the
Commissioners of Patents, with his Petition, on the 18th February
1860. A communication from abroad by A. E. Tardy, of Paris, in the
Empire of France.
I, JozE Luis, of the British & Foreign Office for Patents, No 1º,
Welbeck Street, Cavendish Square, in the County of Middlesex, Patent
Agent, do hereby declare the nature of the said Invention for "AN IMPROVED
JOINTED BLIND," & that it has been communicated to me from abroad by
A. E. Tardy, of Paris, in the Empire of France, to be as follows:-
The jointed or articulated blind which I have invented is adapted either to
shop windows or other windows, and consists, firstly, of a roller made of tin or
other metal, hollow & fitted with cheeks in the interior, of a funnel shape at
each end, to facilitate the introduction of the tenter into the roller. This
tenter, upon which the cheeks turn, is a triangle of round iron, with a screw
auger at each end, to keep it firm on the iron supports, which are placed at
each end of the roller. These iron supports are made according to the place
for which they are destined, either with cramps, screws, or other fastenings.
At one end of the roller a wheel and axle is fixed, by which the turning motion
is given, as in ordinary blinds; secondly, of a compass, which I denominate
conducting compass, and which is composed of a hollow iron tube, with a
groove running the whole length of it; the lower extremity is closed, the upper
extremity is fixed to a compass head, one branch of which is fastened into the
tube, the other end is fixed (for blinds having but one slope) to an iron plate,
either by screws or other fastenings, depending upon the place where it is to be

page_text: fixed. A round iron slider is introduced into this tube, fitted with a swivel &
movable tenon, which passes in the groove, and receives the balance weight
tube, which is also of tin, so that when the roller is turned to draw up the
blind, it draws with it the balance weight tube, and forces the compass to form
a semicircle upon the inclined plane, where it is placed and brings it up
horizontally upon the roller. For blinds which are required to slope at
different degrees, the upper part of the compass is mounted on hinges in an
iron plate, with a cope and two collars, in which a round iron shaft passes, on
which a muffle with lever is fastened, which raises the compass by means of
two pinned meshes. This shaft is put in motion by a rack, with a chain, and
raising triangle, and an iron quarter of a circle fixed to the shaft, and is moved
with the handle of the wheel.
The great advantage of my system consists in the form of the compass,
which is articulated. It is made with a cope and stay-cramp, mounted on a
round iron shaft (for blinds which are to slope at various degrees), and
mounted on a metal plate for blinds which always keep the same slope. The
top of the compass enters into the cope; this top is formed by two iron
branches, each with a compass head, fitted in by halves, and fastened by a
These two branches have also at their other extremity two compass
heads, which in their turn hold two other branches, cut in profile, with a
sweep in the centre, and having also at their other extremity two other
compass heads, of which the branches join and fasten in a cope.
The two higher branches each bear a running clasp, with a pressure screw
covering a caoutchouc spring for stretching the blind, & causing the compasses
to lengthen out.