Improvement in Attaching Door and other Knobs and Handles to their Spindles.
Year: 1886

page_text: Date of Application, 20th Mar., 1886.
Complete Left, 18th Dec., 1886.
Complete Accepted, 25th Jan., 1887.
PROVISIONAL SPECIFICATION.
Improvement in Attaching Door and other Knobs and Handles to
their Spindles.
WILLIAM GEORGE MACVITIE York Villa, Maney, Sutton Coldfield in the County of
Warwick, Brassfounder do hereby declare the nature of this invention to be as
follows:-
I make a ordinary knob or handle with a square hole in the neck to receive a
square spindle the spindle being screwed on the four corners, I then make a brass..
cup to fit the round seat of the neck of the knob in the centre of the cup I make a
round hole tapped to correspond with the screwed spindle I then pierce a square hole
in the tapped round hole in the cup leaving four parts of the hole tapped to corre-
spond with the square hole in the neck of the knob I then connect the cup to the
seat of the neck of the knob by spinning over the scat of the knob the cup is made
to revolve, to connect the knob to the spindle I turn the cup round so the square
hole in the cup will correspond with the square hole in the neck of the knob by
turning the cup one eighth part right or left the screwed part of the cup will screw
on the screwed spindle the knob then being securely locked to the spindle to prevent
the cup turning from its locking position when not required. I make a small set pin
through the cup which screws down on one of the squares of the spindle to release the
knob from the spindle I unscrew the set pin and turns the cup one eighth part of the
circle right or left which alows the two squares to correspond with each other and
then the knob can be withdawn.
WILLIAM GEORGE MACVITIE.

page_text: COMPLETE SPECIFICATION.
Improvement in Attaching Door and other Knobs and Handles to
their Spindles.
WILLIAM GEORGE MACVITIE of York Villa Maney Sutton Coldfield in the County
of Warwick Brassfounder, do hereby declare the nature of this 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 attaching
knobs and handles to their spindles.
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 in its fastened position of so much of my invention
as is necessary to explain the same, the remainder of the figures being elevation
views. A is the knob with square hole in the neck. B is the screwed spindle. C is.
the cup. D is the screwed part in cup. E is the square hole in screwed cup. E' is
the square hole in the neck of knob to correspond with square hole E in cup C.
F is the seat and neck of the knob which cup C is spun over to revolve. G is the set
C from
pin to fasten cup C to spindle B. when in its locking position prevents cup
turning either right or left, to disconnect the knob A from the spindle B by
unscrewing set pin G cup C can be turned either right or left. One eight part of
the circle allows the square hole E in cup C and the square hole E' in the neck F.
to correspond with each other and the knob can be taken off spindle B.
Fig. 2 is a elevation view in its locked position. Fig. 3. is a elevation view in its
unlocked position.
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
improvement in attaching knobs and handles to their spindles substantially as herein
before described and shown on the drawings.
WILLIAM GEORGE MACVITIE.