Improvements in Spring Rollers for Blinds.
Year: 1889

page_text: Date of Application, 4th Nov., 1889
Complete Specification Left, 17th Mar., 1890-Accepted, 19th Apr., 1890
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PROVISIONAL SPECIFICATION.
Improvements in Spring Rollers for Blinds.
I PATRICK EDWARD TRAINOR of 13 St. James' Square, Notting Hill, in the
County of Middlesex, Commercial Traveller, do hereby declare the nature of my
invention to be as follows :-
This invention relates to spring rollers for blinds.
Heretofore such spring rollers have been made of the length required out of tin
or tinned plate or other suitable metal and the mechanism for operating them has
been made or adjusted for that length, the central rod to which one end of the
spring is attached, passing through the whole length of the rod and having two square
ends for engaging in the brackets holding the blind roller through or by means of
said rod. The improvements mainly consist in the combination of parts comprising
a wooden roller in the one end of which is made a pit or hollow of a depth sufficient
to contain the spring and such parts as are usually placed within the roller; the
other novel parts in the combination being an ordinary roller cap end for the solid
end of said roller and a shaft for the spring which while provided with a square end
for insertion in the one bracket of the blind, extends only to such distance as to pass
axially into the pit or hollow in the roller and revolve loosely in a block in the
bottom thereof. The remainder of the combination and method of attachment being
substantially as heretofore.
By the improvement, I am enabled to use wooden rollers for said spring blinds
which was not heretofore possible and so save expense. And I am enabled to make
a mechanism which will fit any length of roller within practicable limits, since the
pit in the end of the roller may in all cases be made of the same depth, the length of
the solid part of the roller only differing with the total length of the roller.
Datad this 4th day of November 1889
HERBERT & Co.,
Agents to Applicant.
COMPLETE SPECIFICATION.
Improvements in Spring Rollers for Blinds.
I PATRICK EDWARD TRAINOR of 13 St. James' Square, Notting Hill in the County
of Middlesex, Commercial Traveller, do hereby declare the nature of this invention
and in what manner thesame is to be performed to be particularly described and
ascertained in and by the following statement :-
This invention relates to spring rollers for blinds and the object of the improvements
is to cheapen the construction and to provide a wooden spring blind roller which may
be cut down to any length within practicable limits according to the width of the
blind required and thus avoid the delay and expense caused heretofore by the making
for each blind a special tinned barrel roller of the exact length required with the
mechanism therefor running through the whole length of the roller. The improve-
ment consists mainly in the mechanism which made in one size is adapted for blind
rollers of any length within the usual limits and secondly in the combination and con-
struction of parts whereby the same may be fitted to operate a wooden roller.
Taking a wooden roller of the usual diameter and of any length not being less than
the length of the pit or hollow to be made in the end, in the one end is cut an axial
cylindrical pit or hollow of a convenient depth say fifteen inches or thereabouts
to receive the spring and allied parts the other end after the roller has been cut
to the length required will be provided with a usual wooden roller cap end with
gudgeon for turning in the bearing of the bracket supporting the roller at this

page_text: end. A suitable plug is made for the end of the pit and through said plug passes
a cylindrical iron rod extending down the axis of the pit or held centrally at or
near the inner end thereof by or in a suitable block or roller, said rod revolves
loosely in the plug and the spiral spring which is preferably of square or oblong
cross section is fastened at one end to the rod and at the other end to the plug
or the roller. On the end of the roller or of the plug is fastened a cap having a
ratchet wheel made on it, and the rod also passes loosely through the said cap, the
part of the rod extending beyond the cap being prismatic in shape. On this prismatic
end is fixed a hood with spring pawl to engage with said ratchet wheel and the
outer end of the rod is supported in the usual bracket having a hole of similar cross
section to the rod to receive it and prevent the rod from turning.
Reference being made to the annexed drawing Fig. 1 is an elevation of a wooden
roller provided with the improvements, Fig. 2 is a central longitudinal section (part
in side elevation) through the pit of the roller showing the spring and parts allied
thereto. Fig. 3 is a section on line A A. Fig. 2 showing the ratchet wheel hood,
and pawl.
a is the wooden roller, the plain or usual cap end on one end thereof, c is the pit in
the roller, d the iron rod with square end at de is a roller at the inner end of rod d
loosely running between the two washers e e¹. is the plug made of the same
diameter as the roller at f' and turned down at 2 to fit in the end thereof and further
turned down at f³ to receive the end of the spiral spring g as shown. The other
end of the spring is fixed to the rod dat d² for instance by being bent and passed
through a hole in the rod. h is a ferrule of thin brass or other metal covering the
joint of the plug or roller. kis the cap end fastened by screws onto the plug and
having made there with the ratchet wheel 1, m is the hood of suitable shape fitted on
the square end d' of the rod d and having its edge cut away below at m for passage
of the pawl n which is pivoted on the pin n¹ to engage in the ratchet wheel.
o is the spring fastened within the rim of the hood. at o and bearing on the pawl
or in a recess in the back of the pawl at o². 03 is the hand cord for releasing the
pawl. p is a washer fixed on the rod up against the shoulder of the plug to
prevent withdrawal of the rod.
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 combination of a wooden roller having an axial pit c in one end thereof, a
cap end with fixed gudgeon at the other end of said roller and spring actuating
mechanism located in said pit for the purpose set forth.
2. The combination of a roller a cap end with fixed gudgeon on one end of said
roller a stationary metal rod projecting loosely within the other end of said roller and
a spiral spring connected at one end to said roller and at the other end to said rod,
a cap end with ratchet wheel fixed on said roller, a hood fixed on said rod and a spring
pawl pivoted on said hood to engage with said ratchet wheel for the purpose set
forth.
3. The combination of the roller a having the pit c a plug in the mouth of said
pit, a rod d passing through said plug and having a prismatic end d'; a bearing
block e on the end of said rod spiral spring g fastened at one end to said rod and at
the other end to said plug, cap k with ratchet wheel on said plug hood m on said
prismatic end d and pawl n pivoted on said hood substantially as and for the purpose
set forth.
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant.