Year: 1885

page_text: I, WILLIAM HOPKINS of Seymour Works Albert Street Birmingham Cabinet
Brassfounder do hereby declare the nature of this invention to be as follows:-
This Invention has for its object improvements in the manufacture of fittings
for roller blinds.
Commonly spring roller blinds are provided with the following fittings: there is
a disc or plate fixed at the end of the roller and there is a boss at the centre of the
disc with ratchet teeth upon it. There is also another piece or cap carrying a
pawl to engage with and retain the ratchet; in the centre of the cap is a boss or
pummel" with a square or round hole to receive a fixed stud. The stud forms
the centre on which the blind roller revolves and a square upon it entering the
square hole in the "pummel" prevents the cap from turning.
"
Now these fittings have heretofore been made entirely in cast inetal; that is to
say the disc and the ratchet teeth have been cast together in one piece and the cap
with the pummel have been cast together forming another piece.
Now according to my invention I stamp the disc or plate and cast the ratchet
and afterwards combine these parts by pressure. Similarly also I stamp the cap
and I cast the pummel and afterwards combine these parts by pressure.
In this manner I can produce these fittings with a better finish and more cheaply
than heretofore.

page_text: Improvements in the Manufacture of Fittings for Roller Blinds.
I WILLIAM HOPKINS of Seymour Works Albert Street Birmingham Cabinet
Brass Founder 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 :-
This Invention has for its object improvements in the manufacture of fittings for 5
roller blinds.
Commonly spring roller blinds are provided with the following fittings:-there
is a disc or plate fixed at the end of the roller and there is a boss at the centre
of the disc with ratchet teeth upon it. There is also another piece or cap carrying
a pawl to engage with and retain the ratchet; in the centre of this cap is a boss 1
pummel" with a hole to receive a fixed stud. The stud forms the centre on
which the blind roller revolves and a square upon it entering the square hole in
the "pummel" prevents the cap from turning.
or "
Now these fittings have heretofore been made entirely in cast metal; that is to
say the disc and the ratchet wheel have been cast together in one piece and the 1
cap with the pummel have been cast together forming another piece.
Now according to my invention I stamp the disc or plate and cast the ratchet
and afterwards combine these parts by pressure. Similarly also I stamp the cap
and I cast the pummel and afterwards combine these parts by pressure.
In this manner I can produce these fittings with a better finish and more cheaply
than heretofore.
In order that my said invention may be most fully understood and readily
carried into effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a plan and Figure 2 is a transverse section of the disc and ratchet.
Figure 3 is a plan and Figure 4 is a side elevation of the cast ratchet.
Figure 5 is a plan and Figure 6 is a transverse section of the cap with the boss
or pummel.
Figure 7 is a plan and Figure 8 is a side elevation of the cast boss or pummel.
a is the disc, in place of being cast as heretofore it is cut from sheet metal and
stamped to the form shown. b is the ratchet it is cast by itself as a separate piece
in place of with the disc as heretofore-it has a neck b¹ which is turned to fit a
corresponding hole in the part a. The two parts are placed together and by a
heavy pressure, the neck b¹ is spread until it so completely fills the hole in the disc
(which is slightly tapered outwards) that the two parts are afterwards inseparable
by any force to which they can be exposed in use. c is the cap and d is the
pummel or boss. The form of the part is as heretofore but it is made in two pieces
instead of one. The portion c, is stamped from sheet metal in place of being cast.
The boss or pummel d is cast separately and it is provided with a neck d¹ which is
turned and inserted into a hole provided for it in the stamped sheet metal part c.

page_text: The portions c and d. are combined by pressure so that they cannot be separated
by any force to which they can be exposed in use as already described in respect to
the disc and ratchet.
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
(1). The fittings illustrated by the Figures 1. 2. 3 and 4 of the annexed drawings
and consisting of a disc of sheet metal a and a cast ratchet b fixed together as
herein described.
(2). The fitting illustrated by the Figures 5. 6. 7 and 8 of the annexed drawings
and consisting of a cup c, formed from sheet metal and a cast boss or pummel d
fixed together as herein described.