AN IMPROVEMENT OR IMPROVEMENTS IN SPINDLES FOR LOCKS AND LATCHES, AND IN ATTACHING KNOBS OR HANDLES TO THE SAID SPINDLES
Year: 1855

page_text: LETTERS PATENT to John David Kind, of Birmingham, in the County
..
of Warwick, Manufacturer, for the Invention. of "AN IMPROVEMENT OR
IMPROVEMENTS IN SPINDLES FOR LOCKS AND LATCHES, AND IN ATTACHING
KNOBS OR HANDLES TO THE SAID SPINDLES."
PROVISIONAL SPECIFICATION left by the said John David Kind at the
Office of the Commissioners of Patents, with his Petition, on 'the 11th
June 1855.
I, JOHN DAVID KIND, of Birmingham, in the County of Warwick, Manu
facturer, do hereby declare the nature of the Invention for "AN IMPROVEMENT
OR IMPROVEMENTS IN SPINDLES FOR LOCKS AND LATCHES, AND IN ATTACHING KNOBS
OR HANDLES TO THE SAID SPINDLES," to be as follows:-
My Invention consists in making spindles for locks and latches of a
cylindrical form at one or both of their ends and cutting a screw on the said'
cylindrical end; the said screwed end of the spindle is then slit in the direction'
of the axis, by which means the screw becomes divided into two nearly semi-
cylindrical portions, separated by an open place of about one-eighth of an inch
in breadth. The hole in the door knob into which the end of the spindle is
introduced is cylindrical, and is provided with a thread or worm corresponding
to that on the end of the spindle. In attaching the knob to the spindle, the
:

page_text: said knob is screwed on to the said spindle; to the requisite distance, and a
pin, screw, or cotter is passed through a hole formed across the neck of the
knob; the said pin or cotter passes through the slot in the screw, and by sepa-
rating the two halves of the said screw causes the said screw to engage tightly
with the concave screw in the knob. The said pin, screw, or cotter, by passing
through the said screw, prevents the said screw from being turned. Although
I prefer to carry my Invention into effect in the way described, yet nearly the.
same effect may be produced by making the end of the spindle and the hole
in the knob square, and making teeth or notches on opposite sides of the
spindle, the spindle being slit, as before described.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John David Kind in the Great Seal Patent Office on the
11th December 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, John
DAVID KIND, of Birmingham, in the County of Warwick, Manufacturer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh day of June, in, the year of our Lord One.
thousand eight hundred and fifty-five, in the eighteenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
John David Kind, Her special licence that I, the said John David Kind,
my executors, administrators, and assigns, or such others as I; the said John
David Kind, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "AN IMPROVEMENT OR IMPROVE-
MENTS IN SPINDLES FOR LOCKS AND LATCHES, AND IN ATTACHING KNOBS OR HANDLES.
TO THE SAID SPINDLES," upon the condition (amongst others) that I, the said
John David Kind, by an instrument in, writing under, my hand and seal,
should particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the same. to.
be filed in the Great Seal Patent Office within six calendar months next.
and immediately after the date of the said Letters Patent..
.
NOW KNOW YE, that I, the said John David Kind; do hereby declare
the nature of the said Invention,; and in what manner the same is to be per->

page_text: formed, to be particularly described and ascertained in and by the following
statement thereof (that is to say):-
Figure 1 of the accompanying Drawing represents, in section, two door
Knobs joined together by their spindle according to my Invention. The other
Figures represent detached portions or modifications of my Invention as herein-
after explained: a is the door through which the spindle 6 passes; c, d, are
door knobs, attached one at one end and the other at the other end of the
spindle b, as represented. The end 61 of the spindle 6 may be made of a
cylindrical form, or it may be left of a square form, and a screw or thread is
cut thereon. The said screwed end of the spindle 6 is slit or divided, in the
manner represented at e. By this slitting of the screwed end of the axis the
said end becomes divided into two nearly semi-cylindrical portions, separated
by an open space of about one-eighth of an inch in breadth. The hole in the
door knob d, into which the screwed end of the axis benters, is provided
with a thread or worm, with which the screw b' engages. In attaching the
knob d to the spindle b, the said knob is screwed on to the said spindle to the
requisite distance, and a pin, screw, or cotter f is passed through a hole formed
across the neck d' of the knob d. The pin or cotter f passes through the
slot e in the screwed end of the spindle b, and by separating the two halves
of the screw causes the said screw to engage tightly in the concave screw in
the neck d¹ of the knob d. The pin or cotter f, by passing through the screw;
prevents the knob from turning round upon the screw.
The knob c may
either be attached to the end 6 of the axis b, in the manner described with
respect to the knob d, or the said knob c may be attached to the axis by
passing a screw or cotter through the neck of the said knob, and causing the
said screw or cotter to pass through or engage in holes g, g, see Figures 3 and 4,
in the end of the axis. I prefer to effect the rough adjustment of the length
of the spindle by means of the knob c and the holes g, g, and to effect the
accurate adjustment of the length of the spindle to the thickness of the door
and lock or latch, by screwing the knob d on the end 6₁ of the spindle, as
described. Figure 2 represents, separately, a spindle with square screwed ends,
and Figure 3 represents a spindle with a cylindrical screwed end, both the said
spindles being slit or divided according to my Invention. Although I prefer
carrying my Invention into effect in the ways described, yet I sometimes
modify my Invention in the manner illustrated in Figure 4; that is to say, I-
provide one end of a square spindle with teeth or notches, and I also
provide the square hole in the neck of the knob into which the spindle
enters with similar teeth or notches, the said spindle being slit or divided

page_text: at its notched end. The knob is pushed to the desired distance on the
spindle by a sliding motion. When the position of the knob has been adjusted,
the passage of a pin or cotter through the neck of the knob, and also
through the slit in the spindle, Figure 4, causes the slit end of the spindle to
expand, and the teeth thereon to engage in the teeth in the neck of the
knob, and thereby retain the knob in its place on the spindle. By my.
method of constructing spindles for locks and latches, and of attaching knobs
or handles thereto, the length of the spindle between the knobs or handles
may be easily adjusted with great nicety.
Having now described the nature of my said Invention, and the manner of
carrying the same into effect, I wish it to be understood that I do not limit
myself to the precise details herein described and represented, as the same may
be varied without, departing from the nature of my said Invention; but I
claim as my Invention the methods herein described, and illustrated in the
accompanying Drawing, of constructing spindles for locks and latches and of
attaching knobs or handles thereto; that is to say, forming a screw or rack on
one or both ends of the spindle, the said screw or rack being slit-longitudinally,
and fixing the knob or handle to the screwed end of the spindle by passing a
pin, screw, or cotter through a hole across the neck of the knob or handle and
also through the slit spindle, thereby causing the slit screw or rack to expand
and engage in a screw or rack in the neck of the knob or handle.
In witness whereof, I, the said John David Kind, have hereunto set my
hand and seal, this Eighth day of December, in the year of our Lord
One thousand eight hundred and fifty-five.
Witness,
GEORGE SHAW.
JOHN DAVID KIND. (L.s.)