Improvements in or relating to Appliances or Apparatus for Raising, Holding, or Lowering Window Blinds.
Year: 1887

page_text: Improvements in or relating to Appliances or Apparatus for
Raising, Holding, or Lowering Window Blinds.
I, CHARLIE LIONEL TEMPLER, of 40, College Road, Leeds, in the County of York,
Electrical Engineer, do hereby declare the nature of this Invention to be as
follows:-
The object of this Invention is to provide a simple, suitable, and ready appliance
or apparatus for raising, holding, or lowering window blinds, such as are mounted
upon rollers.
According to this Invention the roller is supported in position by inclined brackets
fixed in any convenient manner to the window framing or casing. In one of these
brackets two slot holes may be cast or formed. Through one of these holes the blind
cord may pass from the barrel portion (to which one end of the cord is fastened) of
a double flanged pulley which is attached to one end of the roller by pins or screws.
From one of the flanges of the pulley, a stud or pin projects having one or more
(preferably two) flat surfaces formed on its periphery for arresting the motion of the
blind. This stud or pin works in the second slot hole which is made to taper in
the direction of the inclination of the bracket, and it may be shaped somewhat similar
to a key hole. This hole is made large enough at one end for the stud to revolve
in when it is required to raise or lower the blind; but when it is required to hold it
in any desired position the stud is allowed to roll or slide towards the small end of
the slot hole (which is smaller than the diameter of the stud) until the flat surfaces
of the stud become wedged or fixed in the hole, thus preventing the roller from
rotating. The opposite end of the roller is provided with a stud or pin which works
in a hole or slit formed in the supporting bracket.
To raise or lower the blind it is only necessary to pull the cord so as to bring the
stud to the large end of the slot hole, and retain it there, so that it can revolve,
until the blind is raised or lowered to the required height. As soon as the tension
on the cord is relaxed, the stud (by having the brackets inclined) rolls or slide
towards the small end of the slot hole until its flattened surfaces become fixed therein

page_text: The blind on being lowered winds the cord onto the barrel part of the double flanged
pulley.
By the use of the herein described apparatus, the double flanged pulley may be
formed in one piece, and the employment of a ratchet wheel and catch pin or
projection for holding the blind in any required position is dispensed with.
Dated this Eleventh day of November 1887.
W. FAIRBURN HART,
1, East Parade, Leeds,
Agent.
Raising, Holding, or Lowering Window Blinds.
1, CHARLIE LIONEL TEMPLER, of 40, College Road, Leeds, in the County of York,
Electrical Engineer, 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 :-
The object of this invention is to provide a simple, suitable, and ready appliance
or apparatus, operated by a single cord, for raising, holding, and lowering window
blinds, such as are mounted upon rollers; and it consists in providing two inclined
brackets, in one of which are formed any suitable number of slot holes-preferably
two, one of which is made to taper, or in the form of a key hole for receiving
the blind roller end or trunnion, whilst through the other hole the cord passes to
the pulley. One of the trunnions is also provided with one or more flat surfaces
which wedge themselves against the sides of the tapering or keyhole shaped slot hole
when it is required to hold the blind in any desired position.
Figs. 1, 2, 3, 4, and 5 are respectively a front elevation, and side elevations and
plans of blind roller fittings constructed according to this invention.
Figs. 6, 7, 8, 9, and 10 are respectively a front clevat on, and side elevations and
plans of blind roller fittings with "hanging "brackets constructed in accordance
with this invention.
Fig. 11, a perspective view of roller and bracket showing the method of holding
the blind in any required position.
Like parts in all the views are marked with similar letters of reference.
A is the roller upon which the blind is mounted. To the respective ends of the
roller are fixed or attached by screws as shown at Fig. 1, or by the sockets b, b¹,

page_text: and screws as shown at Fig. 6. the cord pulley B, and end plate or disc B. The
cord pulley Band end plate B¹ are each provided with a projecting pin or trunnion 6², 63
which work in the incline brackets C C to be hereafter described.
When the cord pulleys and end plates are used such as are shown at Figs. 1 to 5
they may be provided with a projecting tapering centre pin or cone 6, and a hole 6º
is provided through which the blind cord is passed and held in position by means of a
knot tied on the cord.
The brackets CC may be made either to project outwards from the window casing
as shown at Figs. 1 to 5, or to hang therefrom as shown at Figs. 6 to 11. In the
bracket is provided any desired number of holes-preferably two-c, c¹. Hole c is
provided in that portion of the bracket which is formed parallel with the roller and
at a right angle to the main part c² of the bracket, and it may be either in the form
shown at Figs. 1, 2 and 3-that is, like an eyelet hole c; or with a pulley or roller c
as shown at Figs. 6, 7, 8, and 11. Through the hole c or over roller the cord is
passed to the pulley B. In the main and inclined portion c² of the bracket C is
provided a second slot hole e¹ formed somewhat after the shape of a key hole, and
which acts as a bearing for the trunnion 62 formed on or attached to and projecting
from the cord pulley B. The trunnion 62 on the cord pulley has one or more (preferably
two) flattened surfaces formed on its periphery for arresting the motion of the blind
roller. This stud, trunnion, or pin 62 works in the second slot hole c¹ which may also
be made to taper in the direction of the inclination of the bracket. The hole c' is
made large enough at one end for the stud 62 to revolve in when it is required to raise
or lower the blind; but when it is required to hold it in any desired position the
stud is allowed to roll or slide towards the small end of the slot hole (which may
when preferred be smaller than the diameter of the trunnion) until the flat surfaces
of trunnion b² become wedged or fixed in the hole, as shown at Fig. 11., and thus
prevents the roller from rotating. On reference to the drawings it will be readily
seen that the tendency of the cord pulley end of the roller is to gravitate down the
inclined slot hole c', and thus wedge the trunnion 62 therein whenever the tension
on the cord is released.
The opposite end of the roller A is provided with the end plate B¹ and trunnion 6³,
which latter works in a hole or slit ce formed in the supporting bracket C¹.
To raise or lower the blind it is only necessary to pull the cord so as to bring the
trunnion 62 to the large end of the slot hole c¹ and retain it there, so that it can
revolve, until the blind is raised or lowered to the required height. As soon as the
tension on the cord is relaxed, the trunnion (by having the brackets inclined) rolls
or slides towards the small end of the slot hole until its flattened surfaces become
fixed or wedged therein.
The blind on being lowered winds the single cord on to the barrel part of the
double flanged pulley B.
By the use of the herein described apparatus the double flanged pulley may be
formed in one piece, and the employment of a ratchet wheel and catch pin or
projection for holding the blind in any required position is dispensed with.
In conclusion I am aware that various methods have been provided for raising,
holding, and lowering window blinds, including an arrangement for allowing the
trunnion to revolve in a parallel inclined slot, with a ratchet wheel and pawl or
projection for holding the blind in any desired position, but to such arrangements I
make no claim.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
1st. The manufacture and use of apparatus (operated by a single cord) for raising,
holding, and lowering window blinds having a trunnion, such as 2, (on the
cord pulley) provided with one or more flattened surfaces on its periphery, said
trunnion being so arranged as to work in a tapering or key shaped slot hole formed
in an inclined bracket substantially as herein set forth.

page_text: 2nd. The combination or arrangement of apparatus for raising, holding, and
lowering window blinds operated by a single cord, of a trunnion, such as 62 on a cord
pulley, such as B, with an inclined bracket, such as C, provided with a tapering or
key hole shaped slot hole, such as c¹, whereby the trunnion may fix or wedge itself in
the said hole whenever the tension on the cord is relaxed, substantially as herein set
forth.
3rd. The construction and arrangement of the various parts forming the apparatus
as a whole, for raising, holding, and lowering window blinds, substantially as herein
described and illustrated.