Year: 1885

page_text: I WILLIAM GEORGE MACVITIE, of York Villas, Maney, Sutton Coldfield, near
Birmingham, in the County of Warwick, Brass founder, do hereby declare the
nature of my said invention to be as follows:—
The object of my invention is to attach and adjust door knobs and handles to
'their spindles in a simple and secure manner.
In carrying out my invention I notch or serrate one side of the square spindle,
leaving the other three sides quite plain.
The socket end or neck of the knob or other handle is fitted or formed with a
diaphragm which sustains a square tube, and which tube slides freely on the
spindle, without being a loose fit. The diaphragm has (in addition to the square
hole) a slot parallel to one side of the square hole.
A bent steel spring passes through the slot in the diaphragm, and is doubled
upon itself inside the socket, the folded end pressing against the square tube.
Another portion of the spring is bent at right angles to the spindle, which it
embraces; a rectangular hole or opening being made therein for that purpose.
This opening is made deeper than its width, and the lower lip of the opening enters
one of the notches in the spindle and governs the position of the knob or handle
on the spindle. A small hole is made in the neck of the handle or knob,
immediately over the spring. By inserting a brad awl or wire in this hole the
spring can be depressed and the lip of the spring disengaged from the spindle,
thereby rendering the knob capable of being removed or adjusted.
In fitting the knob to the spindle, it has merely to be placed on the spindle and
pushed as far as desirable. A brad awl or wire may be inserted in the hole, if the
spring should offer too much resistance.
In drawing off or releasing the handle the bradawl is also used to depress the
spring and thereby release the same from the spindle, when it can be readily
removed.

page_text: I WILLIAM GEORGE MACVITIE, of York Villas, Maney, Sutton Coldfield, near
Birmingham, in the County of Warwick, Brass founder, do hereby declare the
nature of my invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
The object of my invention is to effect improvements in the method of adjusting
door knobs and handles to their spindles.
In carrying out my invention, I notch or serrate one side of the square spindle,
leaving the other three sides quite plain.
The socket end or neck of the knob or other handle is fitted with a diaphragm
which sustains a square tube; such tube being capable of sliding freely on the
spindle without being a loose fit. A transverse slot is made in the tube, close to
the diaphragm, into which a portion of a spring disc passes, and enters one of the
notches in the spindle, whereby it is secured.
And in order that my said invention may be particularly described and
ascertained, reference is hereby, made to the accompanying drawings, in which
similar letters of reference indicate corresponding parts.
Fig. 1 is a sectional elevation of so much of my invention, as is necessary to
explain the same, the remainder of the figures being detail views.
a is the spindle, in one side of which saw-cuts, teeth, or serrations are formed.
b is the handle, to the inner end of which the ferrule or ring c is fitted. This ring
is shewn in Figs. 4 and 5, Fig. 4 being a side view and Fig. 5 a section. The
webs c¹ c¹ are formed to fit two sides of the spindle. d is the diaphragm, Fig. 2
being an elevation and Fig. 3 a section, with the spring disc e in its place.-The
spring disc is shewn separately in Fig. 6.
A small hole is made at f. for the insertion of a brad-awl or other suitable
appliance, when adjustment or removal is being performed. g is the spring, formed
in one with the spring disc e, and which spring is caused to press upon the square
tube h, and thereby lift the lip i of the spring disc through the slot in the tube h,
into one of the serrations. is a bend, over the spring g, to ensure the action of
the brad awl, in pressing down the spring disc.
In fitting the knob to the spindle, it has merely to be placed on the spindle and
pushed as far as desirable. A brad awl or wire may be inserted in the hole f, if
the spring should offer too much resistance.
In drawing off or releasing the handle the brad-awl is used to depress the spring,
and thereby release the same from the spindle.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
The novel arrangement and combination of mechanism, together constituting my
improvements in adjusting door knobs and handles to their spindles, substantially
as herein before described and shewn on the drawings.