IMPROVEMENTS IN APPARATUS FOR RAISING AND LOWERING WINDOW BLINDS AND MAPS
Year: 1843

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME; I, GEORGE
BATE, of Bloomsbury, Wolverhampton, in the County of Stafford,*
send greeting..
WHEREAS Her present, most Excellent Majesty, by Her. Letters Patent
under the Great Seal of Great Britain, bearing date at. Westminster, the
Fifteenth day of June, in the sixth year of Her reign, did, for Herself, Her
heirs and successors, give and grant unto me, the said George Bate, Her
especial licence, full power, sole privilege and authority, that I, the said
George Bate, my exors, adññors, and assigns, or such others as I, the said;
George Bate, my exors, admors, or assigns, should at any time, agree with,.
and no others, from time to time, and at all times during the term of years.
therein expressed, should and lawfully might make, use, exercise, and vend,
within England, Wales, and the Town. of Berwick-upon-Tweed; my Inven-
tion of "IMPROVEMENTS IN APPARATUS FOR RAISING AND LOWERING WINDOW
BLINDS AND MAPS;" in which said Letters Patent is contained a proviso. that
I, the said George Bate, shall cause a particular description of the nature of
my said Invention, and in what manner the same is to be performed, to be
inrolled in Her said Majesty's High Court of Chancery within six calendar
months next and immediately after the date of the said in part recited Letters
Patent, as in and by the same, reference being thereunto had, will more fully
and at large appear.
'
NOW KNOW YE, that in compliance with the said proviso, I, the said
George Bate, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are fully described and

page_text: DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a short roller with a small window blind, having apparatus
for raising and lowering it applied thereto according to my Invention.
Figure 2 shows an end view of the apparatus, the axis of the blind being.
shewn in section. Figure 3 shows the apparatus separately. The other
Figures on the Drawings show separate parts of the apparatus. a, the roller
on which the blind is wound. b is the barrel on which the cord c winds on
pulling down the blind, and by which the blind is raised. d is the right-hand 1
end of the axis with which the roller turns. This end of the axis turns in a
bearing at e, the axis d being pressed on by the lever f, which moves on an
axis at f', and the lever is pressed on by the spring f, the pressure of the
spring being regulated by the screw f³ acting under the tail of the spring
which moves on an axis at ft. The lever f is connected to the lever g
by the short connecting rod or link h. The lever g carries the pulley i, over
which the cord c passes, the cord being kept in the groove of the pulley by
means of the spring stop j, which moves on an axis, as is shown, and is kept
closed by the spring k. By this arrangement of parts when the blind is being
drawn down by the cord the blind will retain any position to which it may
be drawn down in consequence of the pressure on its axis at d; or, in place of
using the cord l, to draw down the blind, the cord m may be used, which
drawing down the lever g will relieve the axis d from pressure, and allow the
blind to descend by its own weight. This cord m will be found useful in those
cases where the blind descends nearly to the floor, and where it is desirable to
dispense with the use of the cord l. In raising the blind by the cord cit
will cause the lever g to be depressed, which will relieve the axis d from the
pressure of the lever f, and thus allow of the blind being drawn up easily.
I will now describe the second
Figure 4 shows part of a roller and blind, with apparatus applied thereto
according to the second part of my Invention. Figure 5 shows a section of
the left-hand end of the roller, and of the apparatus applied thereto, for
obtaining the necessary stopping of the blind, to whatever position it may be
raised or lowered. The apparatus at the right-hand end of the roller is of the
ordinary kind, and in common use. Figure 6 shows an end view of the appa-
ratus on the left-hand end of the roller axis. Figure 7 shows a side view and
a front view of the bearing for supporting the left-hand end of the roller axis.
part of
my Invention.

page_text: Figure 8 is the same apparatus, with the axis and the ratchet wheel in position.
The other views show parts of the apparatus separately.
This apparatus consists of a novel arrangement and construction of parts
for obtaining friction to support the roller and retain the blind in any place to
which it may be raised or lowered. On the axis n is formed a screw, on
which the part o is screwed so as to form the axis of the ratchet wheel p,
the part o being secured by means of the screw o'. The ratchet wheel inoves
on the part o, as is shown, there being a washer of horn at (2), (2), which I
have found to be a very useful addition to such description of apparatus. q is
a disc or washer of metal against which the spring passes to give the
required friction to the ratchet wheel. s is the bearing of the left-hand end of
the axis of the roller, the nature of which is clearly shown in the Drawing.
t is a sliding stop, being lined with leather or other soft material on the under
side, to prevent the sliding stop making a noise in the revolution of the ratchet
under it. The sliding stop has a slot through it, and it moves on the fixed
stud v, as is shown.
I will now describe the third part of my Invention.
Figure 9 shows part of a roller of a blind, on the left-hand end axis of
which is affixed the ratchet wheel u. Figure 10 shows an end view of the
apparatus applied to the left-hand end axis separately, the other Figures
showing different views of the parts. w is a lever moving on, an axis at w'.
The nature of this lever is clearly shown in the Drawing. a is a boss which
slides over the hollow axis w of the lever w; and a' is a screw which enters
the hollow axis w, and retains the pärts in their places. y is a ratchet wheel
which moves on the boss x, there being washers of horn at (2), (2), and a
washer of metal at (3). z is a spring which, pressing on the washer (3), gives
friction to the ratchet wheel. (4) is a leather stop against which the lever w
rests. The ratchet wheel u takes into the ratchet wheel y, and when the blind
is being drawn down the ratchet wheel y offers friction so as to retain the
blind at any desired position; but when the blind is being drawn up, then
the ratchet wheel y, by its lever, gives way, and allows the axis to turn freely.
I would here remark that, although I have only spoken of blinds for
windows, it will be evident that the apparatus herein described is equally
applicable to maps which are mounted on rollers similar to window blinds.
Having thus described the nature of my Invention, and the best means I
am acquainted with for performing the same, I would wish it to be under-
stood that I do not confine myself to the precise details, provided the peculiar
character of either part of my Invention be retained. But what I claim is,―
First, the mode of combining apparatus for raising and lowering window