IMPROVEMENTS IN ADJUSTABLE LOCK SPINDLES
Year: 1867

page_text: LETTERS PATENT to Michael Cavanagh, of Kensington, in the County
of Middlesex, for the Invention of "IMPROVEMENTS IN ADJUSTABLE LOCK
SPINDLES."
Sealed the 9th August 1867, and dated the 20th February 1867.
PROVISIONAL SPECIFICATION left by the said Michael Cavanagh at the
Office of the Commissioners of Patents, with his Petition, on the
20th February 1867.
I, MICHAEL CAVANAGH, of Kensington, in the County. of Middlesex, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
ADJUSTABLE LOCK SPINDLES," to be as follows (that is to say):-
My Invention has reference to improvements in the construction of lock
spindles by which the combination and arrangement of the several parts are
thereby simplified, enabling the same to be more accurately adjusted to the
thickness of the door or otherwise than by the system at present in use, and
consists of a flanged screw nut arranged so as to work upon the tapped edges

page_text: of the ordinary square spindle (and admit of being adjusted in the usual
manner) in connection with which a milled union cap and tapped socket are
employed for securing the movable knob or handle upon the said spindle, so
that upon the adjustment being effected through the medium of the screw
nut, as aforesaid, the milled union cap acting against the flange of the said
screw nut together with the tapped socket enables the said knob or handle to
be secured.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Michael Cavanagh in the Great Seal Patent Office on the
13th August 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MICHAEL
CAVANAGH, of Kensington, in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of February, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirtieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Michael Cavanagh, Her special licence that I, the said Michael Cavanagh,
my executors, administrators, and assigns, or such others as I, the said Michael
Cavanagh, 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 "IMPROVEMENTS IN
ADJUSTABLE LOCK SPINDLES," upon the condition (amongst others) that I,
the said Michael Cavanagh, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Michael Cavanagh, do hereby declare
the nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement (that is to say):-
My Invention has reference to improvements in the construction of lock

page_text: spindles, by which the combination and arrangement of the several parts
thereof are simplified, enabling the same to be more accurately adjusted to
the thickness of door or otherwise than by the system at present in use, and
consists of a screw nut provided with a flange arranged to work upon the
tapped edges of the ordinary square spindle so 'as to admit of being adjusted
in the usual manner, in connection with 'which a milled union cap and
mount fitted with a spiral spring are employed for securing the moveable
knob or handle upon the said spindle, so that upon the adjustment being
effected by means of the screw nut aforesaid the milled union cap acting
against the flange of the said screw nut in connection with the mount
enables the knob or handle to be secured, suitable means being employed
for preventing the flanged nut from turning on the spindle when properly
adjusted.
And in order that my said Invention may be more fully understood and
readily carried into effect I now proceed to describe in detail the mode of
performing the same, reference being had to the accompanying Drawings, and
the letters and figures thereon marked (that is to say):-
Fig. 1 represents a side view of an adjustable lock spindle upon my improved
principle of construction, shewing its application to a door or otherwise;
Fig. 2, longitudinal section of the same; Fig. 3, front view of the tapped
square spindle fixed to the knob or handle; Fig. 4, corresponding view of the
mount secured to the moveable knob, shewing square hole for reception of the
spindle; Fig. 5; side view of the several parts representing the order in which
they are arranged or placed upon the spindle; Figs. 6, 7, 8, and 9, side,
sectional, front, and 'back views of the adjusting screw nut; Figs. 10, 11,
and 12, front, sectional, side and back views of the milled union cap
separately shewn; Figs. 18, 14, 15, and 16, similar views of fixing plate
and pin for preventing the nut turning round on the square spindle. or
becoming unscrewed by the jar consequent on the slamming of the door;
Figs. 17 and 18; a modification of the above shewing the employment of
a screw nut without flange for securing the milled union cap above referred
to. In each Figure the same letters of reference denote similar corresponding
parts.
A, A; square spindle with tapped edges B, B, as represented; C, C, kuob
or handle fixed thereto; D, D, moveable knob or handle; E, E, mount or
socket secured to the said knob; F, F, concentric groove or channel formed
therein; G, G, pressure spring fixed within the said groove for the purpose
of holding, the said union cap more firmly to the mount; H, H, square hole

page_text: formed in the said mount for receiving the end of the spindle so as to turn in
connection with it; I, I, screw nut with flange l¹ working on the tapped
edges of the square spindle for adjusting the same to the required thickness
of door; J, J, milled union cap, through the medium of which the moveable
knob or handle is secured to the spindle; K and K', fixing plate and pin for
retaining the nut in its adjusted position by means of the slots L, L, formed
therein; M, M, screw thread or otherwise upon the inside of the union cap
for securing the mount and handle to the spindle; N, N, deep milled edging
or beading for facilitating the turning or unturning of the union cap; 0, 0,
screw nut without flange for retaining the milled union cap on the spindle
which may be employed in lieu of the flange above referred to. In
fitting the above to doors, the spindle has to be passed through the lock
in the usual manner, and the union cap first put on the nut is next screwed
down on the tapped edges of the square spindle until the flange or end
of the said nut impinges on the inner bearing of the union cap; the fixing
pin is then inserted in the slot formed in the nut so as to prevent its moving
or turning round after having been properly adjusted; the moveable
knob or handle is lastly placed upon 'the spindle, and finally attached by
turning the union cap upon the mount or otherwise, thereby firmly holding
the knob or handle upon the spindle independently of set screws as at
present.
In conclusion to the foregoing description I would here note that the
spiral spring and nut fastening, as above described, may be dispensed with if
thought desirable, or receive such other modifications as may be found
necessary; and I would further note, that the moveable knob or handle may
be secured to the spindle through the medium of a tapped milled union cap
aforesaid, or by any other suitable means in place of the screw or tap, as above
described and set forth in the annexed Drawings.
Having now fully described and ascertained the nature of this my said Inven-
tion, and the manner in which the same is to be performed and carried into
effect, I would have it clearly understood that I do not by any means intend
to confine myself to the precise details herein-before set forth and described,
as the same may be otherwise varied without departing from the general
character of these my said improvements; nor do I claim as new and of my
said Invention the exclusive use of the several parts, combinations, and pro-
cesses, except when the same are employed in and for the purposes of my
said Invention, which I hereby declare to consist in the exclusive right of
employing the screw nut, niilled union cap, aud mount in connection with

page_text: adjustable square spindles, in the manner and for the purposes herein-before
set forth and described.
In witness whereof, I, the said Michael Cavanagh, have hereunto set
my hand and seal, this 18th day of August, in the year of our Lord
One thousand eight hundred and sixty-seven.
Witness,
WALTER TURNER,
Clerk to Weatherdon & Co.
M. CAVANAGH. (L.S.)