Year: 1888

page_text: I, FERDINAND SCHÄFER of No. 28 Bei den Hütten Hamburg in the Empire of
Germany 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 the fixing of blinds upon the rollers supporting them and
it consists in the improved construction of the roller and attachments. hereinafter
described for the said purpose.
Reference being made to the annexed drawing.
Fig. 1 is a side elevation of part of the improved roller with blind attached. Fig. 2
is a sectional view through the roller near one of the fasteners. Fig. 4 is a similar
view of the same parts in their open or unfixed position, Fig. 3 is a plan view of the
same closed Fig. 5a similar view of the same open. Fig. 6 is a sectional view showing
another form of fastener.
The roller is cut or divided along its length into the two parts a and a¹ preferably
by the two cuts and parallel with the axis so that the edge of the blind may be
fixed between the two parts by the fasteners hereinafter described.
There may be two or more fasteners according to the width of the blind; each
fastener consisting of a suitable pin or the like passing through the one part of the
roller and into the other part fixing or engaging therein in a convenient manner and
passing through the edge of the blind between the parts of the roller. The fastening
device shown in Figs. 2 to 5 is constructed as follows; through the part a is cut the
passage and the outer face of the roller is cut away or recessed to form a flat surface
on which the plate m may be fastened for instance by screws or nails so that the slot v
in said plate may be over the passage .. In the part a¹ is cut a corresponding
passage narrowed within to form an annular shoulder for the spiral spring S.
Through the passage 21 is inserted the sharp ended bolt or plate h, having at a suitable
place below its sharpened end two lateral recesses so that it may be passed into the
passage through the slot in the plate m and be turned so that the edges of the slot
pass into the said lateral recesses in the plate and secure the same in place. On the
edges of the plate h are the lugs p bearing on the end of the spring s aforesaid. The face

page_text: of the part a' is recessed at e¹ to give a flat surface for the plate m² with slot o¹ to retain
the plate in the passage. The recesses e and e¹ are of such depth and the length
of the plate is such, that when it is fixed in position as in Fig. 2 the ends do not
project beyond the circumference of the roller. The end of the plate his recessed or
otherwise shaped to be operated by a suitable tool. The fastener shown in Fig. 6
differs from the former in that the bolt is inserted from the part a and is provided
with the screw threaded portion a²; In the part a¹ the springs is omitted and its
place is taken by the sleeve n with female screw thread and recesses by which it
may be turned by a suitable tool to be screwed upon the bolt h. The plates m and m¹
being rendered unnecessary are omitted.
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
claim is ;--
1). A blind roller consisting of the two parts a and a adapted to hold the blind
between said parts with fastening devices at intervals along the roller to hold the two
parts together substantially in the manner described.
2). The combination with a roller consisting of two parts a a¹; of the fastening
device consisting of the plate or bolt with recesses and lugs thereon, spiral
spring and plate with slot. constructing for operation substantially as
described.
3). The combination with a roller consisting of two parts a a¹; of the fastening
device consisting of a bolt h having screw threaded portion and sleeve a having
female screw thread adapted to engage therewith substantially as and for the purpose
set forth.
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