IMPROVEMENTS IN ATTACHING DOOR AND OTHER KNOBS TO SPINDLES
Year: 1878

page_text: LETTERS PATENT to John Post Lawrence, of the City of London, Merchant,
for the Invention of "IMPROVEMENTS IN ATTACHING DOOR AND OTHER KNOBS
TO SPINDLES." A communication from abroad by Coates Walton, of
Philadelphia, in the United States of America.
Sealed the 17th December 1878, and dated the 11th July 1878.
PROVISIONAL SPECIFICATION left by the said John Post Lawrence at
the Office of the Commissioners of Patents on the 11th July 1878.
JOHN POST LAWRENCE, of the City of London, Merchant. "IMPROVEMENTS IN
ATTACHING DOOR AND OTHER KNOBS TO SPINDLES." [A communication from
abroad by Coates Walton, of Philadelphia, in the United States of America.]
This Invention relates to improvements in devices for attaching and adjusting
door and other knobs on their spindles so as to adapt them to doors of different
thicknesses.
The Invention consists in constructing the neck of the knob with an annular
groove near its inner end, and combining therewith a nut with lugs to enter the
said groove, and threaded axially with the opening of the neck of the knob to
correspond to a thread on the angles of the knob spindle, the said nut holding the
knob at any point on the spindle to which the said nut may be turned, the said
nut when turned carrying with it the knob, and with the rose constructed with slots
in which fit the said lugs, so as to prevent the nut turning with the spindle, the
said rose also acting as a wrench to operate the said nut.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Post Lawrence in the Great Seal Patent Office on the
9th January 1879.
"
JOHN POST LAWRENCE, of the City of London, Merchant. IMPROVEMENTS IN
ATTACHING DOOR AND OTHER KNOBS TO SPINDLES." A communication from
abroad by Coates Walton, of Philadelphia, in the United States of America.
This Invention relates to improvements in devices for attaching and adjusting
door and other knobs on their spindles so as to adapt them to doors of different
thicknesses.
The Invention consists in constructing the neck of the knob with an annular 1
groove near its inner end, and combining therewith a nut with lugs to enter the
said groove, and threaded axially with the opening of the neck of the knob to
correspond to a thread on the angles of the knob spindle, the said nut holding the
knob at any point on the spindle to which the said nut may be turned, the said nut
when turned carrying with it the knob, and with the rose constructed with slots in 1
which fit the said lugs so as to prevent the nut turning with the spindle, the said
rose also acting as a wrench to operate the said nut.
But to make the Invention communicated to me better understood I will proceed
to describe the same by reference to the accompanying Drawing, in which,
Figure 1 is an elevation of a door knob and spindle shewing my improved devices 2
for attaching and adjusting the same, the rose being shewn in section.
Figure 2 is a detached sectional view shewing the neck of the knob.
Figures 3 and 4, front and back views of the nut.
Figure 5, side view; and Figure 6, section of same.
Figure 7, elevation of the inner face of the rose.
Similar letters in all the Figures represent similar parts.
'
A is the spindle of the usual form, but screw-threaded on its angles at one end, the
knob at the other end of the spindle being fixed thereto; B is the knob, and C the
neck of the same, the said neck being attached to or forming part of the knob in
the usual manner; D is the annular groove in the neck C; E is the nut, of any 3
suitable external shape but threaded internally, as shewn in Figure 6, to correspond
with the herein-before described screw thread on the angles of the spindle A; F, F,
are the lugs on the nut, the ends, ff, thereof turning down and corresponding with
the annular groove D in the neck C of the knob B, and so that the knob may be
placed by its neck C in between the said lugs as shewn, and thus couple the two 3
together; G, G, are the slots in the rose H into which fit the lugs F, F, so as to
prevent the nut turning with the spindle, and allowing the rose to act as a wrench
to operate the nüt.
To attach and adjust the improved door furniture, pass the spindle with a knob
attached at one end through the door and lock, screw the nut E on the threaded end 4
of the spindle A until it is flush with the end thereof, then slide the knob B (the
rose H being on the neck of the knob) on to the nut, the lugs F thereof taking into
the groove D, and turn the nut until the spindle A enters the square hole I in the
neck of the knob, bring forward the rose H so that its slots G catch on to the lugs F,
and turn the rose until the knob is adjusted to the thickness of the door, then fix 4
the rose to the door by screws as usual.
Having thus described the Invention communicated to me, and the best means I
am acquainted with for carrying the same into effect, I wish it to be understood
that what is claimed is, the combination of the neck of the knob constructed with
an annular groove near its end; an internally threaded nut constructed with lugs to 5
engage the said annular groove in the neck of the knob; the knob spindle threaded
upon its angles to correspond with the thread of the nut; and the rose constructed

page_text: with slots upon the inside to engage the lugs of the nut, substantially as and for
the purpose herein-before described.
In witness whereof, I, the said John Post Lawrence, have hereto set my hand
and seal, this Ninth day of January, in the year of our Lord One thousand
eight hundred and seventy-nine.
Witness,
G. F. REDFERN,
Patent Agent,
4, South Street,
Finsbury.
JOHN POST LAWRENCE. (L.S.)