AN IMPROVED METHOD OF RAISING AND LOWERING WINDOW BLINDS AND APPARATUS THEREFOR
Year: 1876

page_text: LETTERS PATENT to Charles Dawbarn, 8, Bury Court, St. Mary Axe, London,
for the Invention of "AN IMPROVED METHOD OF RAISING AND LOWERING
WINDOW BLINDS AND APPARATUS THEREFOR.” A communication from abroad
by Louis H. Gano, of New York City, United States of America.
Soaled the 2nd March 1877, and dated the 4th September 1876.
PROVISIONAL SPECIFICATION left by the said Charles Dawbarn at the Office
of the Commissioners of Patents on the 4th September 1876.
CHARLES DAWBARN, of 8, Bury Court, St. Mary Axe, London. "AN IMPROVED
METHOD OF RAISING AND LOWERING WINDOW BLINDS AND APPARATUS THEREFOR."
I place a flanged pulley or wheel on one end of roller encased in a hood, around
which wheel or pulley a cord winds itself as the blind is pulled down. On the
other end of the roller I place a thimble, which is surrounded by a packing of
leather fitting into a hood and compressed by a metal spring, thus keeping the
blind at any height desired.
I claim the combination of flanged pulley or wheel at one end in connexion
with the thimble and leather packing at the other, both ends being encased in
hoods.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Dawbarn in the Great Seal Patent Office on the 3rd March
1877.
CHARLES DAWBARN, of 8, Bury Court, St. Mary Axe, London.
"AN IMPROVED
METHOD OF RAISING AND LOWERING WINDOW BLINDS AND APPARATUS THEREOF.”
A communication from abroad by Louis H. Gano, of New York City, United States
of America.
The nature of the Invention consists in the construction and arrangement of a
shade fixture, as will be hereafter more fully set forth.
In the annexed Drawings, which fully illustrate the Invention, A represents a
window shade attached to an ordinary shade roller B, having a pulley or sheave
FD 477

page_text: wheel C on one end with journal a projecting therefrom, and a friction thimble or
ring D provided with a flange E on the other end.
In place of the usual open bracket commonly employed to support the ends of
the shade roller a hood bracket F, F, is used, consisting of a circular casing with
an ear or stem S at the bottom for fastening to the window casing, said hood
bracket enclosing the sheave wheel C at one end and the thimble D at the other
end.
In the centre of one of the brackets is a hole, into which the journal of the
sheave wheel is inserted, while the thimble D at the other end forms the journal,
and is inserted into the bracket, which is provided with a packing of leather, india-
rubber, or other suitable material G placed within the circular casing of the
bracket.
On the same side beneath the packing is used a flat spring I resting on the inner side
of the casing and pressing against the leather packing which encircles the thimble D,
and the friction caused by the packing G coming in contact with the surface of the
thimble the shade and the roller are held in any desired position, and the shade is
prevented from dropping by its own weight, the amount of friction necessary being
regulated by the strength of the spring H; I is a socket secured to the window
casing, into which the ear or stem of the bracket is inserted, affording an easy
method of putting the shade up or taking it down at pleasure; J represents the
cord for rolling up the shade, which passes through an eyelet hole in the casing of
the bracket and is secured to the pulley or sheave wheel C.
The hood bracket F protects the pulley and cord from injury by contact,
dust, etc., and it serves as a guide for the cord, confining it in its proper channel, and
also guides the shade and prevents it from riding or running on the flanges at the
end of the roller, and makes a perfect finish to the fixture On the cord J at a
suitable point is attached a stop K, which by coming in contact with the hood
bracket prevents the shade being unrolled so far as to tear it from its fastenings to
the roller, and prevents exposing the naked roller to view.
In the Drawings it will be observed that a section of each bracket is left off to
more clearly show the relative position of the attachments on the end of the
roller.
Figs. 2 and 3 in the Drawings represent detached parts of the same, Fig. 2
representing one of the brackets F with the packing G and spring H in proper
position, Fig. 3 represents the reverse side of the bracket I.
Having thus fully described the Invention, what I claim and desire to secure by
the Royal Letters Patent is,―
1st. The hood brackets F, F, provided with the stems S, S, in combination with
the shade roller B provided with the sheave wheel C and friction thimble D, sub-
stantially as and for the purpose set forth.
2nd. The thimble D in combination with the packing G, spring H, and hood
bracket F, substantially as and for the purpose set forth.
3rd. The socket I in combination with the stem S and bracket F, substantially
as and for the purpose set forth.
4th. The stop K attached to the cord J in combination with the hood bracket F,
sheave wheel C, and shade roller B, substantially as and for the purpose set forth.
In witness whereof, I, the said Charles Dawbarn, have hereunto set my
hand and seal, this First day of March, in the year of our Lord One thousand
eight hundred and seventy-seven.