An Improvement in Arrangement or Mechanism for the Drawing up or Lowering the Ordinary Roller Window Blind and for Holding same in Required Position.
Year: 1888

page_text: An Improvement in Arrangement or Mechanism for the Drawing
up or Lowering the Ordinary Roller Window Blind and for
Holding same in Required Position.
FREDERICK HOYER 55 Cornwallis Street in the City of Liverpool in the County of
Lancashire I do hereby declare the nature of this invention to be as follows:-
:-
An improvement in arrangement or mechanism for the drawing up or lowering the
ordinary roller window blind and for holding same in required position. The present
difficulty with the use of the ordinary Roller Window blind is the continual stretching
of the endless cords under the needful strain put upon it so that the present arrange-
ment for drawing up and holding it in position often fails at very inconvenient
moments and involves the trouble of cutting and rejoining the endless cord again and
again. To do away with this trouble I have devised the following arrangement.
I provide a simple shackle carrying a small pulley at the upper part whilst the lower
end of same is so constructed as to provide attachment for a cord or string as to
provide attachment for a cord or string or its equivalent. The endless cord of the
blind is passed round the pulley of the roller blind and round the pulley in said shackle
in the usual way and I then pass a cord which I attach to the lower end of said
shackle through or round an eyelet or staple conveniently placed below and drawing
said cord, I thereby tighten the said endless cord sufficiently to keep the blind in
position as left. As the endless cord stretches all that is needful is to repeat the
process so that all meddling with the endless cord becomes needless as the second
cord may be left long enough to take up all the possible stretch in the endless cord.
In place of this lower string or cord I may employ other mechanical arrangements,
but the above is a simple and cheap way and obviates the necessity of racks and such
like things for holding the shackle carrying the lower or second pulley now in use.
Dated this Nineteenth day of March 1888.

page_text: COMPLETE SPECIFICATION.
An Improvement in Arrangement or Mechanism for the Drawing
up or Lowering the Ordinary Roller Window Blind and for
Holding same in Required Position.
FREDERICK HOYER 37 Hurst Street Wapping (late of 53 & 55 Cornwallis Street)
Liverpool in the County of Lancaster engineer I 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:-
An improvement in arrangement or mechanism for the drawing up or lowering
the ordinary roller window blind and for holding same in required position. The
present difficulty with the use of the ordinary roller window blind is the continual
stretching of the endless cord under the needful strain put upon it so that the present
arrangement for drawing up and holding it in position often fails at very
inconvenient moments and involves the trouble of cutting and rejoining the endless
cord again and again. To do away with this trouble I have devised the following
arrangement. I provide a simple shackle carrying a small pulley at the upper part
whilst the lower end of same is so constructed as to provide attachment for a cord
or string or its equivalent. The endless cord of the blind is passed round the pulley
of the blind roller and round the pulley in said shackle in the usual way and I then
pass a cord which I attach to the lower end of the said shackle through or round an
eyelet or staple conveniently placed below and drawing said cord through, I thereby
tighten the said endless cord sufficiently to keep the blind in position as left.
endless cord stretches all that is needful is to repeat the process so that all neddling
with the endless cord becomes needless as the second cord may be left long enough to
take up all the possible stretch in the endless cord. In place of this lower string or
cord I may employ other mechanical arrangement but the above is a simple and
cheap way and obviates the necessity, of racks and such like things for holding the
shackle carrying the lower or second pulley now in use.
As the
The before going being the nature and object and purpose of my invention I will
now proceed to describe more in detail how the same may be carried out into
practical effect reference being had to the accompanying sheet of drawings making
a part of this specification and to the letters and figures of reference marked thereon
like letters and figures being used to denote the same or corresponding parts
throughout the various views and figures.
Figure 1 shows shackle and pulley with endless cord of roller blind and second
cord and staple.
Figure 2 shows shackle and pulley with plate for carrying ornament.
The shackle itself may be coveniently made of wire of suitable size and material
and bent as shewn in Fig. 1 to a loop shape the two ends of the piece of wire or
one end only being further bent over so as to furnish the. spindle for the pulley
carried on the shackle to work upon though other forms and material may be
used.

page_text: The said shackle may also be provided with a plate or other arrangement
conveniently attached for the purpose of carrying an ornament to hide the shackle
and pulley and add attractiveness.
I will now describe figures 1 and 2. Figure 1 shews shackle A made of wire bent
to a loop shape D the two ends of the wire E E forming the spindle for the pulley B
to work upon. C is the endless cord of the roller blind F the cord being attached
to said shackle at D for drawing said endless cord tight upon the two pulleys.-G is
the hook or staple whereupon the cord F may be made fast or on to which the said
shackle may be hooked at D direct. If the said shackle is hooked direct on to G
then G must be so positioned as to bring sufficient strain upon endless cord C as to
hold the said cord taut enough to keep the blind in position and when the strain
upon the said cord C induces slackness then staple G would have to be moved to
another position or a second point of purchase provided. By employing cord F this
latter difficulty is removed as the cord F may be left at first long enough between
the shackle A and the hook or staple G to take up any slack occurring and this
taking up of slack may be more conveniently done by employing further in connexion
with cord F a piece of wood or metal fashioned the same as that used for tightening
the cords of a tent and to he employed in the same manner. By drawing cord F
tight upon the shackle A it being fastened thereto at D the endless cord C passsing
over pulley B is also tightened and the said cord F then being made fast to say
staple G the roller blind is kept in position and on slackness occurring the same
process can be repeated. Other intermediaries than cord may of course be employed
if desired viz. such as a linked chain as an example.
For imparting an ornamental appearance to this arrangement I further provide on
shackle A a plate say of metal as shewn in figure 2 marked H to which an ornament
of brass or bow of ribbon and laces may be attached hiding the shackle and pulley
and yet not interfering with the running of the endless cord C.
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
1. The construction and arrangement of the shackle carrying the pulley whereby
the shackle itself can be attached of itself to any convenient point of purchase and
the endless cord of the roller blind be drawn tight sustaining the blind without any
other working part for said shackle to work upon being required substantially as set
forth.
2. The use of the cord for drawing shackle and pulley tight upon the endless
cord of the roller blind and in connection therewith substantially as set forth.
3. The arrangement for displaying ornament upon the shackle substantially as set
forth.
Dated this Eighteenth day of January 1889.