AN IMPROVED SPINDLE AND BUSH FOR DOOR KNOBS AND OTHER SIMILAR USES
Year: 1854

page_text: LETTERS PATENT to Frederick Clark, of King Street, Westminster, in the
County of Middlesex, Turner, for the Invention of "AN IMPROVED SPINDLE
AND BUSH FOR DOOR KNOBS AND OTHER SIMILAR USES."
Sealed the 29th December 1854, and dated the 28th September 1854.
PROVISIONAL SPECIFICATION left by the said Frederick Clark at the
Office of the Commissioners of Patents, with his Petition, on the 28th
September 1854.
1, FREDERICK CLARK, do hereby declare the nature of the said Invention for
"AN IMPROVED SPINDLE AND BUSH FOR DOOR KNOBS AND OTHER SIMILAR USES" to
be as follows:-
This Invention consists in forming the spindle for door knobs with a thread
or screw thereon, which upon the spindle being passed through the door, the
thread thereon may be screwed into a female screw, formed in a bush, which is
to be used in the opposite knob, such bush being secured in its place by an.
annular rim working in a V groove, the bush being pushed into its place, and
then secured there by turning over the metal, so as to form this annular rim.
Similar arrangements may be applied to spindles for drawer knobs and to
castors for furniture.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Frederick Clark in the Great Seal Patent Office on the
20th February 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
CLARK, of King Street, Westminster, in the County of Middlesex, Turner,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-eighth day of September, in the year of our
Lord One thousand eight hundred and fifty-four, in the eighteenth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Frederick Clark, Her special licence that I, the said Frederick
Clark, my executors, administrators, and assigns, or such others as I, the
said Frederick Clark, 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 IMPROVED SPINDLE AND BUSH FOR DOOR KNOBS AND OTHER SIMILAR USES,"
upon the condition (amongst others) that I, the said Frederick Clark, 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 Frederick Clark, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
The nature of my said Invention, already intimated in the Provisional
Specification, filed on application for the said Letters Patent, is hereby further
and particularly described to consist in the following peculiar arrangements of
parts, forming a spindle and bush for door knobs and handles, and other similar
uses, knobs for drawers being included:-The spindle for the door knob
has thereon at each end, or one end only, a thread or screw, which upon the
spindle being passed through the door may (under certain conditions here-
after set forth) be screwed more or less, according to the thickness of the door
or drawer, into a corresponding thread, formed in a collar for the said spindle,
(hereafter termed the "spindle collar,") which turns in a bush or socket, which

page_text: of the axis of the roller,) in an orifice in the bottom of the sheath, which sheath
will serve in place of the bush, as the whole will be secured and caused to act
together by rolling the metal that forms the V groove over the V edge, outside
the bottom of the sheath, and thus an efficient spindle and bush may be
obtained for this use. It will be observed that (see Fig. 2) the top of this
bush or socket is more solid than the other part, and that the opening (*)
therein is of less diameter; also, that this opening is not circular but angular
(see Fig. 3), the object being to firmly secure therein the end of the spindle,
which is angular. In this bush or socket one end of the spindle collar is
placed, which is a short tube of such diameter that it will fit loosely and turn
freely within the lower part of the socket a. This part (6) is formed with a
shoulder c outside thereof, which has an annular V groove, whereby it is secured
to the V edge d of the flange at the bottom of the bush or socket a, and rotates
freely thereon. In order to form this V groove and connect the spindle collar
to the bush, it is necessary that the said V groove should be formed in the first
instance as an upright annular flange, and then reduced to a V form, after
fitting the spindle collar to the bush or socket, by rolling the metal forming
such upright flange over the V formed flange at bottom of the socket a. The
interior of this spindle collar is threaded, so as to correspond with the thread
on the spindle c. This spindle, it will be observed, is thicker at e' below the
thread than it is at e, which is the part that penetrates the opening * at the
top of the socket a, and even when the door is thin, into the opening in
the knob or handle just above it. The bush being fitted to a door knob, as
above stated, the spindle is to be applied, by pushing it through the door lock
or latch of the door, and then applying the knob, with the bush so fitted, to the
screw of the spindle, on to which it is to be screwed by turning the spindlo
collar. By acting on the edge of the shoulder (c) of the said spindle collar, which
is "milled" to facilitate the same, and after having screwed it close to the rose
plate of the door, it will be found that by turning the knob the spindle only will
be turned, provided it be long enough to fit into the opening in the bush or
socket a; and by this means and within this limit the knob may be fitted to a
door of any width, and is secured without any screws or any other appliances.
My improved spindle and bush has been herein-before stated to be available
for castors, Figs. 4 & 5, exemplifying the modifications desirable for that
purpose; and it will be observed, by reference thereto, that the sheath A of
the castor has an orifice A', A', at the bottom, into which is fitted the end of
the spindle a*, the same being thicker at a', and provided with a shoulder
piece or flange a³, a², having a groove, which is formed by rolling the same in
manner described with regard to Figs. 1, 2, 3, over a shoulder or flange A*, A*,
$

page_text: with a V thereon outside at bottom of said sheath A, the aforesaid part a*
being prolonged at its lower extremity in the form of arms a³, provided with
bearings for the wheel or roller r of the castor. Instead of the flange being at
bottom of the sheath, it might be at the top of the spindle part and the grooved
shoulder at bottom of the sheath. It will be seen that the said Drawings
exhibit no views of the adaptation of the said Invention to carpenters' braces
or drills, the reason being that precisely the same arrangement as shewn for
door knobs may be used, the socket being screwed to the head and the spindle
fitted into the top of the crank.
Having now described the nature of the said Invention, and ascertained in
what manner the same is to be performed, I declare that I claim the Invention
of an improved spindle and bush, as herein-before set forth, the principal
peculiarity whereof being that such bush has a flange, which is embraced and
enclosed by a groove attached to or forming part of the spindle, or the spindle
might have the flange, and the bush the groove.
In witness whereof, I, the said Frederick Clark, have hereunto set my
hand and seal, this Sixteenth day of February, One thousand eight
hundred and fifty-five
Signed and sealed in the presence of
F. W. CAMPIN, Patent Office,
156, Strand.
F. CLARK. (L.S.)