IMPROVEMENTS IN OR CONNECTED WITH DOOR KNOBS, AND ATTACHING THEM TO THEIR SPINDLES
Year: 1880

page_text: LETTERS PATENT to Alexander Bell, of the City and County of Edinburgh,
North Britain, Ironmonger, for an Invention of "IMPROVEMENTS IN OR
CONNECTED WITH DOOR KNOBS, AND ATTACHING THEM TO THEIR SPINDLES."
PROVISIONAL SPECIFICATION left by the said Alexander Bell at the Office
of the Commissioners of Patents on the 2nd April 1880.
ALEXANDER BELL, of the City and County of Edinburgh, North Britain,
Ironmonger. "IMPROVEMENTS IN OR CONNECTED WITH DOOR KNOBS, AND ATTACHING
THEM TO THEIR SPINDLES."
The said Invention relates to improvements in or connected with the knobs and
spindles of doors, and has for its object to provide means for readily and securely
attaching the knobs to their spindles.
According to the said Invention the knob and spindle are constructed with a pin
hole passing completely therethrough. The rose is provided with a collar which
projects over or partly over the neck of the knob, the said collar having therein a
slot. In attaching the knob to the spindle the rose is placed in position, and
the knob is passed onto the spindle, the slot in the rose and the holes in the knob
and spindle being in line. A split pin or cotter or screw is then passed through
the hole in the knob and spindle, and the rose is turned so that its collar covers
the said pin, and the said rose is then secured to the door by screwing or
otherwise. The pin or cotter is thereby secured firmly in position and cannot be
removed without unscrewing the rose.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Alexander Bell in the Great Seal Patent Office on the 1st
October 1880.
ALEXANDER BELL, of the City and County of Edinburgh, North Britain,
Ironmonger. "IMPROVEMENTS IN OR CONNECTED WITH DOOR KNOBS, AND ATTACHING
THEM TO THEIR SPINDLES.”
My said Invention relates to improvements in-or-connected with the knobs and
spindles of doors, and has for its object to provide means for readily and securely
attaching the knobs to their spindles.
According to the said Invention the knob and spindle are constructed with a
bole passing therethrough. The rose is provided with a collar which projects over
or partly over the neck of the knob, the said collar having therein a slot. In
attaching the knob to the spindle the rose is placed in position, and the knob is
passed on to the spindle, the slot in the rose and the holes in the knob and spindle
being in line. A split pin or cotter or screw is then passed into the hole in the
knob and spindle, and the rose is turned so that its collar covers the said pin,
cotter, or screw, and tho said rose is then secured to the door by screwing or
otherwise. The pin or cotter or screw is thereby secured firmly in position and
cannot be removed without unscrewing the rose.
Each
Figure 1 of the accompanying Drawing represents in plan a pair of door knobs
attached to their spindle according to my Invention; Figure 2 is a vertical section
of one of the said knobs and one end of the spindle; Figure 3 is a transverso section
taken on the line 1, 2, Figure 1 showing the rose in the position for inserting the
fastening screw (or pin or cotter), and Figure 4 is a similar view with the said rose
turned into and fastened in position to cover and secure the said screw.
knob a has a hole a passing diametrically through or nearly through the neck
thereof, and corresponding holes 62 are formed in the spindle b. The rose c is formed
with a collar which projects over the neck of the knob, as seen more clearly in
Figure 2, and in this collar is formed a hole, slot, or opening c². In attaching the
knob to the spindle the rose c is placed in position on the end of the spindle, and
the knob is passed on to the spindle, and the slot c³ in the collar of the rose and the
hole a² in the neck of the knob, and one of the holes b² are all brought into linc.
The screw d is then screwed into the said holes a² and b, the said screw passing
completely through the hole 62, as shewn in Figure 3, and also with regard to the
knob to tho right hand of Figure 1. The rose c is now turned through a portion of
a revolution, so that the slot, hole, or opening c³ is moved from opposite the hole a³,
and the collar of the said rose then covers the head of the screw d, as shewn in
Figure 4, and with regard to the knob to the left hand of Figure 1. The rose c is
then secured in this position by screws, as at c³, or by other means.
The rose c is
moved through a portion of a revolution greater than that through which the knob
is moved in actuating the latch with which it is in connection, so that the collar of
the rose covers the head of the screw d in all positions of the knob. The said
screw & therefore is firmly secured in position, and cannot fall out nor can it be
removed without first unscrewing the rose c.
In place of a screw d, a pin, cotter, or other equivalent fastening may be employed.
Figuro 5 is a transverse section corresponding to Figures 3 and 4, showing the knob
secured by a split pin passing through the knob and spindle.
Having now described and particularly ascertained the nature of my said
Invention, and the system, mode, or manner in or under which the same is or may
be used or practically carried into effect, I would observe in conclusion that what I

page_text: consider to be novel and original, and thereforo claim as the Invention secured
to me by the hereinbefore in part recited Letters Patent is,-
The improvements in or connected with door knobs, and securing them to their
spindles, consisting in attaching the knob to the spindle by a screw, pin, cotter, or
the equivalent thereof, passed through the knob and completely through the spindle,
and secured in position by the rose, essentially as hereinbefore described and
illustrated in the accompanying Drawings.
In witness whereof, I, the said Alexander Boll, have hereunto set my hand
and seal, this Twenty eighth day of September, in the year of our Lord
One thousand eight hundred and eighty.
ALEXANDER BELL. (LS.)