IMPROVEMENTS IN ADJUSTING AND ATTACHING DOOR KNOBS TO SPINDLES to be as follows:
Year: 1885

page_text: Spindles.
We EDWIN LUDLOW and ERNEST HORATIO LUDLOW both of The Uplands
Bristol Road Birmingham in the County of Warwick Gentlemen do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN ADJUSTING AND
ATTACHING DOOR KNOBS TO SPINDLES to be as follows:-
"
This invention consists of the combination or arrangement of parts herein after
described for adjusting door knobs on and attaching them to their spindles.
We use a spindle screwed on its angles as usual and having by preference the
fixed knob secured on one end but this invention may be used for adjusting and
attaching both knobs to the spindle. We will describe the invention as applied
only to the moveable knob at one end of the spindle.
The screwed end of the spindle which is to receive the moveable knob is by
preference made plain by removing the thread on its angles at its extreme end say
for a length of about an inch whereby the placing of the moveable knob on the
spindle is facilitated as herein after explained. To the shoulder or collar at the
front of the neck of the knob we so connect a screw nut that while it is capable of
turning upon the knob it cannot be disconnected from the knob. The said screw
nut is screwed internally with a concave screw of a size proper to screw upon the
screwed end of the spindle and the exterior of the screw nut is made square or
angular to fit in a square or angular hole in the fixing rose. The exterior of the
said screw nut is also furnished with a milled collar by which it can be readily
turned. We connect the screw nut to the collar at the front of the knob by closing
or turning over the said collar a flange at the back of the milled collar of the
screw nut so that the screw nut is capable of turning upon the front of the knob
but is incapable of being separated from the knob. The screw nut may be made
in two parts to simplify its manufacture. In this case the two parts of the screw
nut are connected together by closing or turning over a portion of the separate
collar part upon a flange on the separate screw nut part.
In adjusting and attaching the moveable knob to the spindle the screwed spindle
having the fixed knob on one end is passed through the door and lock or latch
and upon the protruding end of the spindle the fixing rose is placed and moved up
to the surface of the door. The moveable knob having the connected screw nut
[Dnia Q.1

page_text: described is next passed onto the screwed spindle the plain end of the spindle
permitting of the screw nut sliding upon the said end until it reaches the screwed
part of the spindle. The screw nut is now rotated by its milled collar so as to
cause it to advance upon the screwed spindle drawing or pulling after it the
moveable knob. As the screw nut approaches the surface of the door the external
square part passes into the square hole of the fixing rose and the rose is now
The rose
turned with the nut until the former is made to abut against the door.
is now fixed to the door by screws as usual. As the square part of the nut is
engaged in the square hole in the rose the fixed rose prevents the rotation of the
screw nut and hence so long as the rose is in its place the detachment of the knob
is prevented.
It is preferred to make the square or angular hole in the rose sufficiently large
to permit of a little play of the square or angular part of the screw nut in it
whereby the excessive tightening of the knob when fixed is prevented.
W. T. WHITEMAN,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Adjusting and Attaching Door Knobs to
Spindles.
We EDWIN LUDLOW and ERNEST HORATIO LUDLOW both of "The Uplands"
Bristol Road, Birmingham in the County of Warwick, Gentlemen do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN ADJUSTING AND
ATTACHING DOOR KNOBS TO SPINDLES" and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement :-
This invention consists of the combination or arrangement of parts hereinafter
described for adjusting door knobs on and attaching them to their spindles.
We use a spindle screwed on its angles as usual and having by preference the
fixed knob secured on one end but this invention may be used for adjusting and
attaching both knobs to the spindle. We will describe the invention as applied
only to the moveable knob at one end of the spindle.
The screwed end of the spindle which is to receive the moveable knob is by
preference made plain by removing the thread on its angles at its extreme end say
for a length of about an inch whereby the placing of the moveable knob on the
spindle is facilitated as herein after explained. To the shoulder or collar at the
front of the neck of the knob we so connect a screw nut that while it is capable

page_text: of turning upon the knob it cannot be disconnected from the knob. The said
screw nut is screwed internally with a concave screw of a size proper to screw
upon the screwed end of the spindle and the exterior of the screw nut is made
square or angular to fit in a square or angular hole in the.fixing rose.
The exterior
of the said screw nut is also furnished with a milled collar by which it can be
readily turned. We connect the screw nut to the collar at the front of the knob
by closing or turning over the said collar a flange at the back of the milled collar
of the screw nut, so that the screw nut is capable of turning upon the front of the
knob but is incapable of being separated from the knob. The screw nut may be
made in two parts to simplify its manufacture. In this case the two parts of the
screw nut are connected together by closing or turning over a portion of the
separate collar part upon the collar of the moveable knob.
Figure 1 of the accompanying Drawing represents in elevation, partly in
longitudinal section, a pair of door knobs, the moveable knob of which is adjusted
on and attached to its spindle according to this invention; Figure 2 represents the
fixed knob without the moveable or adjustable knob and Figure 3 represents the
adjustable knob detached from the spindle; Figure 4 represents in front elevation
and Figure 5 partly in longitudinal section and partly in side elevation, the
adjustable knob detached from the spindle; Figure 6 represents in front elevation
the adjustable knob without the screw nut and Figure 7 represents a longitudinal
section of the screw nut detached; Figure 8 represents in front elevation and
Figure 9 in section the rose detached from the door.
The same letters of reference indicate the same parts in the several Figures of
the Drawing; a is the fixed knob and b the adjustable knob having a square hole
in its neck; c is the square spindle the end for receiving the adjustable knob b
being screwed on its angles, the extreme end of the spindle for a length of about
an inch being plain or unscrewed as represented. The plain or unscrewed end of
the spindle is marked c²; d is the screw nut secured to the front of the moveable
knob b. The said screw nut d is screwed internally with a concave screw of a
size proper to screw upon the screwed end of the spindle c and the exterior of the
said screw nut is made square (or angular). The collar part 2 of the screw nut is
milled externally for turning the said nut. The screw nut d has at its back a
flange d³ made of thin metal, the said screw nut being secured to the collar b² at
the front of the moveable knob b, by closing or turning over the said flange d
upon the said collar 6 as best seen in 'the section Figure 5. The screw nut d
is thus made capable of rotating upon the end of the knob b but is incapable of
being separated from the said knob; e is the rose fixed to the door the said rose
having a square hole e² in it into which the square part d of the screw nut can
readily pass; Figure 10 represents in section a screw nut made in two pieces and
Figures 11 and 12 represent the two parts of which the screw nut is made; d being
the screw nut part and d² the collar part the parts d and d² being connected
together and to the collar on the moveable knob by turning the thin flange dou
the collar part 2 upon the collar 6 of the moveable knob.
In adjusting and attaching the moveable knob b to the spindle c the screwed
spindle having the fixed knob a ou one end is passed through the door and lock or
latch as represented in Figure 2 and upon the protruding end of the spindle c the
fixing rose e, e³ is placed and moved up to the surface of the door. The moveable
knob b having the connected screw nut d is next passed onto the screwed spindle,
the plain end of the spindle permitting of the screw nut sliding upon the said end
until it reaches the screwed part of the spindle. The screw nut d is now rotated
by its milled collar d so as to cause it to advance upon the screwed spindle,
drawing or pulling after it the moveable knob b. As the screw nut & approaches
the surface of the door the square part of the said nut passes into the square
hole of the fixing rose e and the rose is now turned with the nut & until the
former is made to abut against the door. The rose is now fixed to the door by
screws as usual as represented in Figure 1. As the square part d of the screw nut
is engaged in the square hole e' in the rose the fixed rose prevents the rotation of
e

page_text: the screw nut and hence so long as the rose is in its place the detachment of the
knob is prevented.
In order to detach the moveable knob b from the spindle c the rose e is first
unscrewed from the door. The loose rose now permits of the rotation of the screw
nut d which by a back screwing motion can be detached from the spindle carrying
with it the moveable knob.
It is preferred to make the square or angular hole e2 in the rose sufficiently large
to permit of a little play of the square or angular part d of the screw nut in it,
whereby the excessive tightening of the knob when fixed is prevented.
Or the same object may be obtained by combining with the central part of the
rose, a swivelling plate having a square or angular hole in it of the size of the
square or angular part d of the screw nut. In this case, the swivelling plate is
situated over a central circular hole in the rose, the connection of the swivelling
plate with the rose being effected by two rivetted pins or studs on the said plate
working in short curved slots in the rose so that the said plate can have a slight
angular motion in one or other direction upon the rose.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that we
claim as the said Invention of "Improvements in adjusting and attaching door
knobs to spindles
"
First. The combination of the connected screw nut on the knob the said screw
nut having a square or angular external part with a fixing rose having a square
or angular bole in it for receiving the square or angular part of the connected
screw nut, the said square or angular hole in the fixed rose preventing the rotation
of the adjusted screw nut and the detachment of the knob from the spindle
substantially as hereinbefore described and illustrated in the accompanying
Drawing.
Secondly. Making the extreme end of the screwed part of the spindle plain for
a length of about an inch for facilitating the placing of the moveable knob on the
spindle substantially as described and illustrated in the Drawing.
Dated this fifteenth day of December 1885.
EDWIN LUDLOW.
ERNEST HORATIO LUDLOW.