Improvements in the Construction and Attachment of Metallic Knobs or Terminals for Cornice Poles, Picture Rods, and other analogous purposes.
Year: 1892

page_text: Date of Application, 23rd Jan., 1892
Complete Specification Left, 21st Oct., 1892-Accepted, 31st Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Construction and Attachment of Metallic
Knobs or Terminals for Cornice Poles, Picture Rods, and other
analogous purposes.
We, CHARLES SHOWELL of Lower Loveday Street, in the City of Birmingham
Manufacturers, do hereby declare the nature of this invention to be as follows:-
This invention has reference to the knobs or other similarly shaped terminals
which are connected to the ends of cornice poles, picture rods and other analogous
purposes, and consists in the construction or building up of the said terminals, and
more particularly in the manner which the knob is secured to the neck &c.
In knobs of this class, the central (iron) screw is generally cast in or otherwise
firmly secured to the neck, and the knob itself is formed from a sheet blank, cupped
drawn and closed over, leaving a circular hole at its front. The knob is then
connected to the neck by means of the metal at this circular hole part being spun
into a groove formed upon the said neck. In such cases they frequently become
loose when used. In other cases they are soldered, while in other cases they are
both soldered and spun in. These latter processes however prove troublesome and
expensive.
It is with a view to overcome these difficulties that we have made this our inven-
tion, which is carried out as follows :-
The knob is made in the ordinary manner as already described, or it may be
made by the casting process, in either case having the hole at the front. When the
knobs are cast however the hole at its front may be somewhat modified in form to
suit requirements.
We will now first assume it to be of wrought metal, and as having a front
circular hole. We now make a screw (iron) of convenient length having at its one
end a shaped head, the width of which is somewhat greater than the diameter
of the hole in the knob, but which may be passed into the said hole by first passing
the one side of the T head in, and then the other. When the head is thus inside
and the screw pin held concentric with the knob, the two ends of the head rest
against the metal upon each side of the hole in its interior. We then form the neck
which may be in one piece, or in two, generally the latter. That part of the neck
which adjoins the knob extends to the smallest diameter or hollow of the neck, being
there joined by the second portion. Upon the first part of this neck is a shoulder
which fits into and against the hole in the knob. At its other end it is also
shouldered to receive the smaller end of the second part, thus keeping the two
concentric with each other. The other (larger) end of this second portion is
recessed at its front to receive a circular plate whose centre is thickened up by a
boss formed into a screw nut which is screwed upon the central pin aforesaid.
Thus by screwing up this plate screw nut, the knob, and the two parts forming the
necking are firmly gripped between the T head of the pin and the said plate nut.
Projections, angles, or holes may be formed upon or in this plate nut by which it
may be the better screwed up. Also diametric notches if desired, may be made in
the edge of the hole in the knob, into which a portion of the T head may rest, in
order to prevent its turning round while being screwed up, and the more perfect
prevention of the knob being turned around when in use. When the said knobs are
cast such projections or recesses may be formed in the casting process.
In some cases we may make the plate nut and the second part of the neck in
one piece.
The remaining portion of the screw serves to engage with a screw nut secured to
the end of the pole, when a wooden one, or into a tapped hole formed in or attached

page_text: to the end when a metallic one, by which the terminal as a whole may-be secured
to the said pole.
Dated this 22nd day of January 1892
CHARLES T. POWELL,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in the Construction and Attachment of Metallic
Knobs or Terminals for Cornice Poles, Picture Rods, and other
analogous purposes.
I, CHARLES SHOWELL, of Lower Loveday 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 reference to the knobs or other similarly shaped terminals
which are connected to the ends of cornice poles, picture rods, and other analogous
articles, and consists in the construction or building up of the said terminals, and
more particularly in the manner in which the knob is secured to the neck &c.
In knobs of this class, the central (iron) screw is generally cast in or other-
wise similarly, firmly secured to the neck, and the knob itself is formed from a
sheet blank, cupped, drawn and closed over, leaving a circular hole at its front.
The knob is then connected to the neck by means of the metal at this circular
hole part being spun into a groove formed upon the said neck.
In such cases they
frequently become loose when used. In other cases they are soldered, while in
other cases they are both soldered and spun in. These latter processes however
prove troublesome and expensive.
It is with a view to overcome these difficulties that I have made this our inven-
tion, and in order to more fully explain it, I have appended hereunto an
illustrative sheet of drawings upon which are figures and numbers of reference
similar numbers referring throughout the several views to the same thing or part.
Fig. 1, is a sectional view of the completed terminal, and shown with the neck
portion made up of two parts and also having a front loose screw plate.
Fig. 2, is a sectional elevation of the completed terminal, and shown with the
neck portion made in one piece.
Figs. 3, & 4, are side and end views in detail of the connecting screw pin.
Fig. 5, is a detailed view of the neck portion, as seen in one piece, see
Fig. 2.
Figs. 6, 7, 8, & 9, are detailed views respectively of the knob, the two part
portions of the neck and the loose screw plate, as seen in Fig. 1.
The knob 1, is made in the ordinary manner as already described, or it may be
made by the casting process, in either case having the hole at the front. When
the knobs are cast however, the hole at its front may if desired be somewhat
modified in form to suit requirements.
I will for description sake assume it to be of wrought metal, and as having a
front circular hole. I now make a screw 2, (iron) of convenient length having at
its one end a shaped head 3, the width of which is somewhat greater than the
diameter of the hole in the knob, but which may be passed into the said hole by
.first passing the one side of the T head in anglewise, and then the other.
When the head 3, is thus inside and the screw pin held concentric with the
knob, as seen in Figs. 1 & 2, the two ends 4, 4, of the head rest against the metal
upon each side of the hole in its interior. I then form the neck which may be in
one piece, or in two.
In Figs. 1, 7, 8, & 9, however we have shown it as being of two parts, and in
addition thereto having a screw plate.
That part 5, of the neck which adjoins the knob 1, extends to the smallest

page_text: diameter or hollow of the neck, being there joined by the second portion 6. Upon
the first part of this neck is a shoulder 7, which fits into and against the hole in the
knob. At 8, its other end is also shouldered to receive the smaller end 9, of the
second part 6, thus keeping the two concentric with each other. The front of this
second portion is recessed at 10, to receive a circular plate 11, whose centre is
preferably thickened up, to afford greater depth of screw thread in its central hole,
so that the plate 11, becomes as it were a screw nut, and takes upon the central
pin 2, aforesaid. Thus by screwing up this plate screw nut 11, the knob 1, and the
two parts 5 & 6, forming the neck are firmly gripped between the T head 3, of the
pin 2, and the said plate nut. Projections, angles, or holes inay if desired be formed
upon or in this plate nut 11, by which it may be the better screwed up.
In Figs. 2, & 5, I have illustrated the neck and screw plate made in one piece;
its method of being put together and the function of its several parts when put
together, are however similar to those already described in Fig. 1.
The arrangement of the neck portion shown in Fig. 1, affords a more ready means
should it be desired to make it in stamped or pressed metal, and also affords a
simplicity in the moulding of the parts for the casting process.
Diametric notches if desired, may be made in the edge of the hole, in the knob,
into which the portions 4, 4, of the T head of the pin 2, may rest, in order to
prevent its turning round while being screwed up, and the more perfect prevention
of the knob being turned around when in use, but hitherto we have not found such
to be really necessary. When the said knobs are cast, such projections or recesses
may be formed in the casting process.
The remaining outstanding portion of the screw serves to engage with a screw
nut secured to the end of the pole, when a wooden one, or in a tapped hole formed
in or attached to the end when a metallic one, or made to screw direct into the wood
itself, by which the terminal as a whole may be secured to the said pole.
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. In terminals for cornice poles, rods or other similar articles, the combination
with a loose knob and loose neck, of a T headed screw pin 2, taking into a screw
nut at the fore part of the neck, as herein described and illustrated.
2. The general construction and arrangement of terminals as herein described and
illustrated upon the drawings, and for the purposes specified.
Dated this 20th day of October 1892.
CHARLES T. POWELL,
12, Cherry Street, Birmingham.