IMPROVEMENTS IN THE MANUFACTURE OF BRASS DOOR AND OTHER KNOBS
Year: 1878

page_text: LETTERS PATENT to William Seager Dackus, of Balsall Heath, in the County
of Worcester, Tool Maker, for the Invention of "IMPROVEMENTS IN THE
MANUFACTURE OF BRASS DOOR AND OTHER KNOBS."
Sealed the 27th May 1879, and dated the 4th December 1878,
PROVISIONAL SPECIFICATION left by the said William Seager Dackus
at the Office of the Commissioners of Patents on the 4th December 1878.
WILLIAM SEAGER DACKUS, of Balsall Heath, in the County of Worcester, Tool
Maker. "IMPROVEMENTS IN THE MANUFACTURE OF BRASS DOOR AND OTHER
KNOBS."
The object of this Invention is to construct brass door and other knobs so that
they may be more durable and produced at less cost than those made according to
the general mode of manufacture.
Hitherto these knobs have been usually made with a brass neck, cast, and
attached thereto, but this is found to cause a waste of material, and in wear this
stamped part of the knob is often found to become loose and detached from its cast
brass neck.
Now according to my Invention I construct the knob and its neck from a single
piece of sheet metal, and I do this by stamping the blank to a much higher or
greater degree than has hitherto been accomplished. I then (by the operation of
spinning) insert the front end of the said neck into a suitably shaped pummel,
which is furnished with a suitable groove formed within it to receive the before
described neck.
The groove is then compressed by being spun upon the neck, and the complete
knob is thus formed.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Seager Dackus in the Great Seal Patent Office on the
4th June 1879.
WILLIAM SEAGER DACKUS, of Balsall Heath, in the County of Worcester, Tool
Maker. "IMPROVEMENTS IN THE MANUFACTURE OF BRASS DOOR AND OTHER
KNOBS."
The object of this Invention is to construct brass door and other metal knobs of
a similar kind so that they may be more durable and produced at less cost than
those made according to the general mode of manufacture.
Hitherto these knobs have been usually made with a brass neck cast and attached
to the front part thereof, but this is found to cause a waste of material, and in wear
the stamped part of the knob is often found to become loose and detached from its
cast brass neck.
Now according to my Invention I construct the knob and its neck from a single
piece of sheet metal, and I do this by stamping the blank to a much higher or
greater degree than has hitherto been accomplished for that purpose. I then by
the operation of spinning form the knob into the shape required, and then by the
same kind of operation secure or enclose the front end of the said neck into or upon
a suitably shaped pummel, which is furnished either with a suitable groove formed
within it or a rim formed thereon to receive the before described neck.
· In order that my Invention may be clearly understood I have annexed hereto
Drawings thereof, which I will now proceed to describe.
Figure 1 represents in section a knob a and its neck b made from one piece of
sheet metal according to my Invention.
Figure 2 represents in elevation a pummel c, which may be made of any suitable
shape, and of either cast or wrought metal.
Figure 3 shews in section the flange of the neck b spun upon the pummel c so as
completely to embrace and enclose the edge thereof and firmly to unite the two
parts.
d is the stem or spindle, which may be fixed into the pummel c in the usual
manner.
Having now described the nature of my Invention, and the manner in which the
same is or may be performed, I desire it to be understood that what I claim as the
Invention to be protected by the hereinbefore in part recited Letters Patent is,―
Making the bodies and necks of brass door and other similar kinds of metal
knobs from one piece of sheet metal and attaching suitable pummels thereto, sub-
stantially as and for the purpose hereinbefore described, and illustrated in the
accompanying Drawings.
In witness whereof, I, the said William Seager Dackus, have hereunto set my
hand and seal, this Third day of June, in the year of our Lord One thousand
eight hundred and seventy nine.
WILLIAM SEAGER DACKUS. (L.S.)