Improvements in Knot and like Holders for the Cords of Window Blinds and Analogous Purposes, and in the Manufacture of a Part of the Same.
Year: 1899

page_text: Improvements in Knot and like Holders for the Cords of Window
Blinds and Analogous Purposes, and in the Manufacture of a Part
of the Same.
I, JOHN JESSE JAMES, trading as Dutson and Company, of Whittall Street, in
the City of Birmingham, Manufacturer, do hereby declare the nature of this
invention to be as follows:-
This invention has relation to holders for the knots or like parts of window
and other blind cords and also to the manufacture of a part of the same, viz.,
the foot or pummel which is seated against and secured to a blind stick or the
like and to which the shell for containing the knot or end of the cord is
connected, usually by screwing, and the principal object of the said invention
is to reduce the cost of manufacture of the part in question by making it from
sheet metal instead of from a casting or solid stamping as heretofore.
In carrying out that part of the invention relating to the manufacture of a
knot-holder base according to my invention, I fashion from sheet metal by
suitable tools and by a succession of processes, a blank of a hat figure, or of the
shape of a cup of two diameters, with the larger part of it coming uppermost
and forming the base which comes against the blind stick, whilst the part of less
diameter is impressed or cut with a screw thread onto which the knot-holding.
shell screws and its bottom is dished upwards and pierced, so as to form a counter-
sunk seating for the head of the attachment screw, or nail.
The extreme edge of the larger base part is stepped or formed into a rabate
into which a middle-pierced and concaved steel washer and a like casing washer
of thin brass are dropped, and there secured by turning or burnishing the edges
of the cup over them. The said washers are then concaved by planishing or
otherwise to suit the contour of the blind stick or part to which the article is
to be attached.
The shell part of the knot holder may be made from thin sheet metal and the
metal surrounding the pierced hole in its lower end is turned inwards to
strengthen the shell, whilst the mouth end may be upset in a die in order to
thicken the metal sufficiently to receive the inside screwing.
The base of the knot holder may be made in a similar manner from iron.
cased with a thin sheet brass closed over in such a manner as to entirely conceal
the foundation metal.
According to the other part of my invention, I propose to secure the shell
to the base or pummel of a knot holder by a bayonet-joint connection, with the
slot sunken or impressed within the walls of the one part and the stud to engage
therewith raised out of the metal of the other part, so that on introducing the
stud into the slot and imparting a vertical movement and then a partial rotation
of the detachable shell, is securely connected to the base. Both parts of this'
improved holder may be made from sheet metal, the base being produced, if

page_text: necessary in manner as herein described in connection with the first part of my
invention.
Improvements in Knot and like Holders for the Cords of Window
Blinds and Analogous Purposes, and in the Manufacture of a Part
of the Same.
I, JOHN JESSE JAMES, trading as Dutson and Company, of Whittall Street, in
the City of Birmingham, Manufacturer, 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 relation to holders for the knots or like parts of window
and other blind cords and also to the manufacture of a part of the same, viz.,
the foot or pummel which is seated against and secured to a blind stick or the
like and to which the shell for containing the knot or end of the cord is
connected, usually by screwing, and the principal object of the said invention
is to reduce the cost of manufacture of the part in question by making it from
sheet metal instead of from a casting or solid stamping as heretofore.
Figure 1 of the accompanying drawings represents, partly in elevation and
partly in section, a window-blind cord knot-holder, of which the base or pummel
part is made up or produced in accordance with one part of my invention.
Figure 2 shows a separate side elevation of the said pummel, with its attach-
ment screw in position.
Figure 3 represents, in section the several component parts from which the
pummel is made, separated from one another.
Figure 4 is a section of the said pummel formed by the assemblage of the
several component parts represented by Figure 3.
Figures 5 and 6 represent respectively an underside plan and a topside plan of
the said pummel or foot.
Figure 7 shows a plan of the blank or circular piece of thin sheet metal,
usually brass, from which the outer shell or casing of the built-up or composite
base or pummel is fashioned.
Figures 8, 9 and 10 represent respectively the successive stages through which
the blank is passed to produce the shell of the desired shape.
The same letters of reference indicate corresponding parts in the said Figures 1
to 10 of the drawings.
In carrying out the manufacture of a knot-holder base such as shown in
Figures 1 and 2 in accordance with my invention, I fashion from a disc of sheet
metal (Figure 7) by suitable tools and by a series of processes which impart to
the disc in succession the shapes represented in Figures 8, 9, and 10 a blank of a
hat figure which is marked a, in Figure 3, and is of the shape of a cup of two
diameters, with the larger part a¹, coming uppermost and forming the base
which comes against the blind stick d², whilst the outer periphery of the part of
less diameter 2, is impressed or cut with a screw thread onto which the knot-
holding shell e (see Figure 1) screws whilst its bottom a is dished upwards and

page_text: pierced at a, so as to form a countersunk seating for the head of the attachment
screw or nail f, to lie flush within.
This shell or outer casing is strengthened or reinforced internally by a concaved
washer or liner b, fashioned from a stout iron or steel blank and pierced at b',
to correspond with the hole at, in the shell. This washer is dropped into position
with its top edges resting upon the shoulder as formed at the junction of the
larger and small parts of the shell and above it are placed a middle pierced
closure C₁ also made of steel, and a facing washer d of thin brass, which is also
pierced, the whole of these parts (which are prevented from rotating by the oval
shape) being firmly secured by turning over or burnishing down the top edges a",
of the cup or outer shell, after which the assembled parts are operated upon
collectively by suitable press tools, or by planishing or otherwise, which not
only consolidate the construction but also cause the liner or washer b, to assume
the sectional shape represented in Figure 4, thereby ensuring that the outer
shells or casing parts a and d, shall be efficiently supported internally at all
points by the stout reinforcing washers and c. At the same time, the top of
the pummel is or may be dished or concaved to conform to the contour of the
blind stick or article to which it is to be attached and finally the built-up or
composite article is finished by screw-threading the outside of the neck ², to
receive the knot-holding cup e.
The shell part e of the knot holder may be made from a cupped blank of thin
sheet metal, such as represented in section in Figure 11, of which the mouth
end e may be upset in a die in order to thicken the metal at that part (as
represented in Figure 12) sufficiently to admit of the same being inside screwed
at e (see Figure 13) to take onto the neck of the pummel. A hole c³ is formed
in the lower end for the cord to pass through, and, if necessary the metal sur-
rounding the said hole may be turned inwards to thicken and strengthen. the
shell at this point.
Figure 14 shows a modification of a composite or brass cased pummel or base
in accordance with my invention. In this form the base or foundation of the
knot holder may be made from a suitable fashioned blank b, of stout iron or
steel, cased with a thin sheet brass shell a, closed over in such a manner as to
entirely conceal the foundation metal.
Figure 15 represents, partly in elevation and partly in section, a two part knot
holder in which the shell for the reception of the knot is detachably secured to
the pummel or base by a bayonet joint connection. In this view, the shell is
shown detached from the pummel, whilst in Figure 16 the two parts are shown
connected.
Figure 17 represents a cross section of Figure 16 upon the dotted line r.
The shell e, in this arrangement, is secured to the base or pummel a, of the
knot holder by the bayonet-joint connection, e¹, a, with the slot or channel a
sunken or impressed within the walls of the one part and the stud e¹ to engage
therewith formed out of the metal of the other part, so that on introducing the
stud into the slot, and imparting a vertical movement and then a partial
rotation to the detachable shell, it is securely connected to the base. Both
parts of this improved holder may be made from sheet metal, the base being
produced, if necessary in manner as herein described in connection with the
first part of my invention.
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
First: A base or pummel for window-blind and like knot holders, consisting
of a foundation or body of steel or iron and a casing or covering of thin brass or
other sheet metal, substantially as herein described, and also as set forth in the
accompanying drawings.
Secondly A sheet metal base or pummel for window-blind and like knot

page_text: holders, internally supported by a steel or iron liner or equivalent and having a
closure washer or washers, the several parts being produced and assembled,
substantially as herein described and also as set forth in Figures 1 to 10.
Thirdly : A two-part knot holder for window blinds and the like, in which
the knot holder casing is detachably connected to the pummel or base by a
bayonet joint, with the stud being formed by indenting the metal of the one
part, and the slot or channel made by impressing or sinking the metal of the
other part, substantially as herein described and also as set forth in Figures 15,
16, and 17 of the accompanying drawings.
Dated this 1st day of Koliowy 1000
20196