Improvements in Outside Window Blinds.
Year: 1897

page_text: Date of Application, 28th Apr., 1897
PROVISIONAL SPECIFICATION.
Improvements in Outside Window Blinds.
I, LOUIS LEVOYER, of 1, Rue Montbrun, Paris, France, Mechanical Engineer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to roller blinds for angles and curves, intended to replace
the fixed blinds hitherto used for the corners of buildings.
As shown by way of example in Fig. 1 of the drawing the angular blind may be
applied separately, that is to say to already existing fittings.
For this purpose, the top roller is made of two metallic tubes a a', the former
turning freely in a socket b and the latter a¹, which is operated by the gearings e
and d, actuating the former through the medium of a part of the roller, which
is flexible, and constructed as explained farther on. This forms the angle corre-
sponding with that of the building.
The bottom roller is likewise composed of two parts v v¹, joined together by
means of a flexible piece x¹. In this figure the blind canvas is represented by
dotted lines.
Fig. 2 shows the application of the system to a blunted edge or corner, that is
to say repeated at each angle. The working is effected simultaneously with that
of the three straight blinds A B C by means of bevel gear e el e³ and spur gear f fl.
Fig. 3 is a longitudinal section of the flexible part of the top roller. This
flexible part consists of a spiral spring 9, resting on rundles or rings g¹, connected
with one another by means of longitudinal rods h forming a rim or cap on a
central rod . The rod i is keyed at each of its ends to the axles k. On the
ends of these axles k turn rings or rundles e which form part of the sockets m at
each end of the flexible part, to which said sockets m the gear wheels c or f¹ are
keyed.
Between the spiral spring g and each of the sockets m is arranged a series of
rundles or rings n having tongues which engage with grooves on the next rundle
or ring, forming articulated tenon joints. The rundle or ring n next the spring g
has a recess to receive the end of the spring and the rundle furthest from the
spring is connected by pivots to the first of a series of rings o arranged in pairs
one within the other each inner ring being connected to two succeeding outer
rings by means of pivots arranged at right angles, so that the rings o, which are
loose on the rod i, are articulated together after the manner of a gimbal joint,
the end one being pivotted to the socket m.
This system of rollers may be used for application to curved or any other out-
lines, it being so constituted that it will assume any desirable form.
The combination and form of the gearings vary according to the positions to
which they are applied.
The lower rod, which is connected to the blind canvas, is composed of two rigid

page_text: portions
connected together by a flexible portion ¹ consisting only of the
parts g g and h described above in connection with the top roller.
Dated this 28th day of April 1897.
F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicant.
Improvements in Outside Window Blinds.
I, LOUIS LEVOYER, of 1, Rue Montbrun, Paris, France, Mechanical Engineer,
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 outside roller blinds for angles and curves, intended to
replace the fixed blinds hitherto used for the corners of buildings.
In the drawings left with the provisional specification Fig. 1 is a plan of an
outside window blind applied to the corner of a house; Fig. 2 is a plan of the
corner wall of a house showing only the top rollers of the blind applied thereto;
and Fig. 3 is a detail of construction.
As shown by way of example in the drawings, the angular blind may be applied
separately, that is to say to already existing fittings.
For this purpose, the top roller is made of two metallic tubes a a¹, the former
turning freely in a socket and the latter a¹, which is operated by the gearings c
and d, actuating the former through the medium of a part of the roller, which
is flexible, and constructed as explained farther on. This forms the angle corre-
sponding with that of the building.
The bottom roller is likewise composed of two parts vv, joined together by
means of a flexible piece c¹. In this figure, the blind-canvas is represented by
dotted lines.
Fig. 2 shows the application of the system to a blunted edge or corner, that is
to say repeated at each angle. The working is effected simultaneously with that
of the three straight blinds A B C, by means of bevel-gear e ele and spur-gear ffl.
Fig. 3 is a longitudinal section of the flexible part of the top roller. This
flexible part consists of a spiral spring g, resting on rundles or. rings g', connected
with one another by means of longitudinal rods h forming a rim or cap on a
central rod i. The rod i is keyed at each of its ends to the axles k. On the
ends of these axles k turn rings or rundles e which form part of the sockets m at
each end of the flexible part, to which said sockets m the gear wheels c or f¹ are
keyed.
Between the spiral spring g and each of the sockets m is arranged a series or
rundles or rings n having tongues which engage with grooves on the next rundle
or ring forming articulated tenon joints. The rundle or ring n next the spring g
has a recess to receive the end of the spring and the rundle furthest from the
spring is connected by pivots to the first of a series of rings o arranged in pairs
one within the other each inner ring being connected to two succeeding outer
rings by means of pivots arranged at right angles so that the rings o, which are
loose on the rod i, are articulated together after the manner of a gimbal joint,
the end one being pivotted to the socket m.
This system of rollers may be used for application to curved or any other out-
lines, it being so constituted that it will assume any desirable form.

page_text: The combination and form of the gearings vary according to the positions to
which they are applied.
The lower rod, which is connected to the blind-canvas, is composed of two rigid
portions vv connected together by a flexible portion a consisting only of the
parts g g and h described above in connection with the top 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:-
An outside roller blind for angles and curves, characterised by the combination
of two or more rigid portions connected together by flexible parts, each flexible
part being composed of a spiral spring, of rings or rundles with tenons and grooves
actuating one another, of concentric rings articulated together in pairs by gimbal
joints and to the rundles or rings, and sockets to which the gear wheels are keyed
the whole turning over a fixed central rod keyed to the axles of the roller sub-
stantially as described.
F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicant.