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 6th September 1867, and dated the 4th June 1867.
PROVISIONAL SPECIFICATION left by the said Michael Cavanagh at
the Office of the Commissioners of Patents, with his Petition, on the
4th June 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 for its object improvements in lock spindles with a view
to rendering the several parts thereof less complex and more complete, and
enable the same to be applied and accurately adjusted to any thickness.of
door, and consists in employing with the ordinary tapped square spindle,.
sliding nozzle, and adjusting screw nut a grooved swivel union cap in com-
bination with socket studs formed on the moveable knob or handle, by the
arrangement of which, on the said spindle being adjusted to the required;
thickness of door, the studs in the said handle taking up into notched
concentric inner grooves formed in the union cap (in like manner to the
bayonet fastening), cause the said handle to be firmly held or retained in a.

page_text: fixed position through the medium of a set screw inserted in the edge of the
cap so as to screw into the socket of the said handle, the same to be readily
fitted to the lock.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Michael Cavanagh in the Great Seal Patent Office on the
4th December 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MICHAEL
·CAVANAGHI, of Kensington, in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth day of June, 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 immediately
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
performed; to be particularly described and ascertained in and by the following
statement and the Drawings herein referred to (that is to say)
:-
My Invention has for its object improvements in lock spindles with a view
of rendering the several parts thereof more complete and suitable for being
applied and accurately adjusted to any thickness of door, and consists in
employing with the ordinary tapped square spindle a regulating swivel screw
nut and sliding boss or nozzle in combination with fixing studs and coupling
socket turning upon the mount of the moveable knob or handle, by the

page_text: arrangement of which on the said spindle being adjusted to the required
thickness of door through the medium of the swivel nut the said studs on the
boss are caused to take into a notched concentric inner groove in the said
coupling socket, whereby the knob or handle is firmly held or retained upon
the spindle in like manner to the bayonet fastening.
And in order that my said Invention may be more fully understood, and
readily carried into effect, I now proceed to describe it by the aid of the
accompanying Drawings, reference being had to the letters and figures
thereon marked (that is to say):-
Fig. 1 represents a side elevation of my improved adjustable lock spindle as
applied to a door or otherwise; Fig. 2, corresponding view of the said spindle
detached therefrom, showing the detailed portions thereof in section; Fig. 3,
side elevation of spindle with loose knob or handle disconnected from the
same; Fig. 4, front view of loose knob or handle, showing the coupling
socket, mount, and square hole for receiving the end of the spindle; Fig. 5,
end view of tapped square spindle secured to the fixed knob or handle;
Fig. 6, front view of adjusting or regulating screw nozzle; Fig. 7, back view
of same; and Figs. 8, 9, and 10, side, front and sectional views of the
nozzle mount fastening separately shewn. In each Figure the same letters of
reference denote similar corresponding parts.
A, A, fixed knob or handle; B, B, ordinary square spindle with tapped
edges; C, C, adjusting screw nozzle sliding upon the square spindle aforesaid
so as to admit of being regulated to the required thickness of door or otherwise
through the medium of the swivel screw nut, D, D, connected therewith;
E and E', groove and pin for securing and giving the necessary swivel action
to the adjusting screw nut; F, F, projecting fangs or stubs taking into the
notched concentric inner ring or groove of the coupling mount for retaining
the loose knob or handle G, G, as seen at Fig. 2; H, H, flange or collar
receiving the friction of the rose I, I, and thereby preventing the knob or
handle G, G, from becoming unfastened; J, J, notches into which the fixing
stubs F take for securing the loose knob or handle to the spindle aforesaid ;
K, K, coupling socket secured to the mount K' by means of a pin and channel
bearing L and L' so as to enable the same to be turned round conveniently by
the band or otherwise for the purpose of fixing or connecting the loose knob
to the spindle; M, M, square hole formed in the said mount through which
the adjusted end of the said spindle passes into the knob when fixed to the
door N, N, or otherwise; 0, 0, concentric inner groove into which the fixing
stubs take through the medium of the notches J, J.
Having now fully described and ascertained the nature of this my said

page_text: Invention, 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 intend to confine
myself to the precise details herein-before set forth and described, as the same
may be varied or receive such other modifications as may be found necessary
without departing from the general principle of this my said Invention, nor
do I claim as new and of my said Invention the exclusive use of the several
parts, combinations, and processes herein-before referred to, except when the
same are employed in and for the purposes of my said improvements, which
I hereby declare to consist in the construction and combined arrangement of
the several parts forming the swivel nut, adjusting nozzle, and coupling.socket
mount for fixing or securing the loose knob or handle to lock 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 Third day of December, in the year of our Lord
One thousand eight hundred and sixty-seven.
Witness,
T. M. CORNOCK,
Clerk to Messrs. Weatherdon & Co.,
Law Chambers,
77, Chancery Lane.
M. CAVANAGH. (L.s.)