Year: 1888

page_text: I, ROBERT GILGOUR HISLOP of and 9 Pitt Street, Edinburgh in the County of
Midlothian, North Britain, Bellhanger and Window Blind Manufacturer, do hereby
declare the nature of this invention to be as follows:-
This Invention relates to Improved Mountings or Fittings for Window Blinds, and
applicable to such Blinds as are raised and lowered by revolving a roller at the top
of the same.
The Invention consists of a double flanged pulley or drum, on which a cord
is wound and unwound as the blind is lowered and raised. One end of the cord
is secured to the barrell or axle of the winding drum by means of two holes,
one being wider than the other, so that the knot on the cord passes in through
the wide hole but is caught by the narrow one & so the knot being inside
the drum in no way interferes with the winding of the cord on to the
drum; whilst the other end of the cord is attached to the bottom of the blind
at the centre. Concentric with the winding drum and projecting at right angles
from the inner flange of the same is a short cylindrical flange or cap into which
one end of the roller is fitted and secured therein by screwed pins or otherwise.
A similar cap having a trunnion projecting from the closed end of the same is pro-
vided for the other end of the roller. Attached concentrically to the face of the outer
flange of the winding drum is a ratchet wheel and projecting trunnion. The already
referred to cylindrical flange, drum, ratchet wheel, & trunnion form by preference one
brass or other metal casting. The roller, with its brass or other metal fittings, is
carried in L brackets secured to the head or roof of the window frame or other
convenient place the bearings for the trunnions being situated in the vertical arms of
the same. The L bracket, next that end of the roll which is furnished with the
winding drum and ratchet wheel, is provided with a detent, pivoted on the inner side
of the vertical arm, that is, the side next the window and consequently away from the
operator and by preference at a point lying in the same horizontal plane with the
axis of the roller. From this fixed point the hooked detent is curved upwards over
the top of the ratchet wheel and carried round it for nearly three quarters of a revo-
lution; it is then continued obliquely downwards and inwards, so that the free end
.

page_text: is rove.
of the detent comes immediately below the winding drum & terminates at a point
considerably beyond the vertical plane passing through the axis of the roller. This
free end the detent is provided with an oblong eye, through which the winding cord
The pallet or hook of the detent is so situated as to gear with whatever
tooth of the ratchet wheel happens to be vertically above the axis of the roller.
suitable stopper, which strikes against the horizontal arm of the L bracket, is pro-
vided on the periphery of the detent to prevent the said detent from passing into
such a position as would prevent it, when free, from falling into gear with the ratchet
wheel.
A
To provide means for the ready' fixing and removal of the roller the other L bracket
is furnished with a slot which first passes obliquely upwards from the bottom of
the vertical arm, then after rising for a short distance perpendicularly is carried
horizontally towards the centre of the arm, and finally turns down to the bearing for
the trunnion.
To lower the blind, that portion of the cord which passes up at the side of the
window, and is rove through the eye of the detent, is drawn outwards towards the
operator to take the hook or pallet out of gear. The blind then falls down by
gravity or may be drawn down by means of the cord attached to the centre of
the blind at the bottom but can be stopped in any intermediate position between
the top and bottom of the window by simply setting the cord free and allowing the
detent to fall into gear with the ratchet wheel. To raise the blind the operator
unwinds that portion of the cord from the drum which had been wound on to it
when lowering the blind by pulling the right hand cord slightly to the operator,
the detent during this operation sliding over the teeth of the ratchet wheel. To
suit Blinds which may require to hang between the roller & the window the ratchet
teeth will be made the reverse way to that above referred to.
D: 10th doxe of December 1888
D. DRYSDALE AUSTIN,
Applicant's Agent.

page_text: I ROBERT GILGOUR HISLOP of 7 and 9 Pitt Street Edinburgh in the County of
Midlothian, North Britain, Bell-hanger and Window Blind Manufacturer 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 Improved Mountings or Fittings for Window Blinds, and
is applicable to such blinds as are raised and lowered by revolving a roller at the top
of the same.
Fig. 1 is a side elevation of a Window Blind with my improved fittings constructed
according to and constituting my present invention-Fig. 2 is a side elevation of the
drum or reel end of the roller with its supporting bracket, Figs. 3 and 4 are transverse
sections of the same, taken on the lines x and y y respectively Figure 2-the detent
being shewn out of gear at Fig. 3, and in gear at Figure 4. Figure 5 is a side
elevation of the plain end of roller with its corresponding bracket; whilst Fig. 6 is
a transverse section of the same taken on the line == Figure 5.
My present Improvements consist of a double flanged drum or reel A, on which a
cord G is wound and unwound as the blind B is lowered & raised. One end of
the cord is secured to the barrel or axle of the drum or reel A, as hereinafter
described, whilst the other end of the cord C is attached to the bottom of the blind B
at the centre, as shown in Fig. 1.
To provide for the proper attachment of the cord C to the drum or reel A
without interfering with the winding of the cord C on to the barrel or axle of
the same, the said drum A is made hollow, and two holes a and a¹ of different
diameters are drilled through its periphery. The cord C is threaded through the
axle of the drum A by passing it through the holes a and a¹ in the order mentioned.
The hole a¹ is of such a diameter as not only allows the cord C, to pass through,
but also a knot at the end of same; whereas the hole a is only large enough
to allow the cord C to pass through, but catches the knot C, and holds it within
the hollow drum A, as shown in detail at Figure 3. Concentric with the drum or
reel A, and projecting at right angles from the flange a² of the same, is a short
cylindrical flange or cap D into which one end of the roller I is fitted, and secured
therein by screwed pins or otherwise.
A similar cap E, having a trunnion F, projecting from the closed end of the
same, is provided for the other or plain end of the roller I (illustrated in. detail at
Fig. 5).
Attached concentrically to the face of the flange a³ of the drum or reel A is a
ratchet wheel G and projecting trunnion H.
The beforementioned cap D, drum A, ratchet wheel G and trunnion H form by
preference one brass or other metal casting.
The roller I, with its brass or other metal fittings, is carried by preference in
right angled brackets J and P, secured to the head or roof of the window frame,

page_text: the bearings for the trunnions H and F being situated in the vertical arms of the
sanie. Instead of fixing the brackets J and P to the head of the window frame
as hereinbefore specified, I may secure them to the side of the window frame, or any
other convenient place, the brackets J and P being slightly altered to suit; such as
by making the vertical arm of each of the brackets J and P in the form of a knee,
that is, by providing a vertical arın at the inner side of the existing one, whereby
the said brackets may be fixed to the sides of the window frame. When this
arrangement is adopted the horizontal arm of the bracket J may be shortened until
it is long enough to act as a check upon the stopper K¹ of the detent K, or if desired
both brackets J and P may be shortened. The bracket J, for carrying the drum
or reel end of the roller 1, is provided with a detent K, pivoted at M on the inner
side of the vertical arm, that is the side next the window, and consequently away
from the operator, and by preference at a point lying in the same horizontal plane
with the axis of the roller I as répresented in detail at Figs. 3 and 4. From this
fixed point M, the hooked detent K is curved upwards over the top of the ratchet
wheel G, and carried round it for nearly three quarters of a revolution; the said
detent K is then continued obliquely downwards, & inwards, until the free end or
extended arm of the detent K comes immediately below the winding drum or reel A
as shown at Fig. 2, and terminates at a point considerably beyond the vertical plane
passing through the axis of the roller 1 as represented at Figs. 3 & 4. This free
end or extended arm of the detent K is provided with an oblong eye N through
which the cord C is rove. The pallet or hook k of the detent K is so situated as to
gear with whatever tooth of the ratchet wheel G happens to be vertically above the
axis of the roller I. A suitable stopper k¹, which strikes against the horizontal arm
of the bracket J is provided on the periphery of the detent K to prevent the said
detent K from passing into such a position as would prevent it, when free, from
falling into gear with the ratchet wheel G.
To provide means for the ready fixing and removal of the roller I, the bracket P
is furnished with a slot p which first passes obliquely upwards from the bottom of the
vertical arm, then after rising for a short distance perpendicularly, is carried hori-
zontally towards the centre of the arm, and finally turns down to the bearing for
the trunnion F.
To lower the blind B that portion of the cord C which passes up at the side of
the window and is rove through the eye N of the extended arm of the detent K,
is drawn outwards towards the operator to take the hook or pallet out of gear,
as represented in detail at Fig. 3, of the annexed drawings. The blind B then falls
down by force of gravity or it may be drawn down by means of the cord C attached
to the bottom of the blind B at the centre, it can be stopped however in any
intermediate position between the top and bottom of the window by simply setting
the cord C free thereby causing the detent K to fall into gear with the ratchet
wheel G as shown at Fig. 4. To raise the blind the operator by successive down-
ward pulls of the cord C at the side of the window unwinds that portion of the cord C
from the drum or reel A which had been wound on to it when lowering the
blind B. The detent K during this operation slides over the teeth of the ratchet
wheel G.
To suit blinds which may require to hang between the roller I and the window,
the teeth of the ratchet wheel G will be made the reverse way to that above
referred to, and shown on the annexed drawings.
Having now particularly described and ascertained the nature of my said Inven-
tion, & in what manner the same is to be performed, I declare that what
I claim is.
First. The general arrangement & combination of parts constituting the improved
fittings for window blinds substantially as herein before set forth with reference to
the annexed drawings.
Second. In apparatus for raising, lowering or holding roller blinds, the arrange-
ment of the pivot M of the detent K on the inner side of the bracket J, level with

page_text: the axis of the roller I & in relation to the pallet or hook k, stopper k¹, and extended
arm with guiding eye N substantially as described, & for the purpose specified with
reference to the annexed drawings.
Third. The arrangement or formation of the slot p in the bracket P, for the
purpose specified with reference to Fig. 6 of the annexed drawings.
Fourth. Providing the hollow drum or reel A with two holes a and a¹ of different
diameters as herein set forth & for the purpose specified with reference to Fig. 3 of
the accompanying drawings.