IMPROVEMENTS IN ATTACHING DOOR AND OTHER KNOBS OR HANDLES Turner. TO AND ADJUSTING THEM ON THEIR SPINDLES
Year: 1878

page_text: PROVISIONAL SPECIFICATION left by William Trubshaw at the Office of
the Commissioners of Patents on the 19th June 1878.
WILLIAM TRUBSHAW, of Willenhall, in the County of Stafford, Hard Wood
"IMPROVEMENTS IN ATTACHING DOOR AND OTHER KNOBS OR HANDLES
Turner.
TO AND ADJUSTING THEM ON THEIR SPINDLES."
My Invention consists of the construction and combination of parts, herein-after
described, for attaching door and other knobs or handles to and adjusting them on
their spindles.
My Invention is applicable both to metallic and non-metallic knobs or handles,
but I will describe my Invention as applied to the attaching of a china or other
non-metallic door knob to its spindle.
The square spindle of the knob is plain on one end, and on the said plain end the
fixed knob is attached in the usual way. The other end of the spindle is screwed
on its angles in the ordinary manner. In the neck of the moveable or adjustable
knob is a bush, having a square hole in it which takes upon the square spindle, the
said knob being capable of sliding upon the spindle but not of rotating thereon.
The metallic mount at the front of the neck of the china or non-metallic knob is
made hollow or under cut, a square notch or slot at the edge of the central opening
in the metallic mount giving access to the hollow or under cut part of the said
mount. On the inner face of the front plate of the mount is a ring-like incline, the
said incline having the same breadth as the square notch or slot in the under cut
mount, the base or lowest part of the incline being situated at one side of the notch
or slot, and the top or summit of the incline at the opposite side of the said notch.
or slot. At the said summit of the incline is a pin or stop for the purpose herein-
after explained.
Screwing on the screwed end of the spindle is a collar, the bush or central part
of which is screwed with a concave or hollow screw, suitable to screw upon the
screw thread at the angles of the spindle. The screwed bush of the collar projects
from one piece of the collar, and the edge of the said projecting part of the bush is

page_text: furnished with a square stud or projection of a size proper to pass into the square
notch or slot made in the hollow or under cut mount of the moveable knob.
The adjusting of the moveable knob on and attaching it to its spindle are effected
as follows:-The spindle with the fixed knob on one end is passed through the door
so that its screwed end protrudes from the door. On to the screwed protruding end
of the spindle the rose is passed, and afterwards the screw collar is screwed on the
spindle until its inner face abuts against the rose placed against the door, the other
or outer face of the screw collar containing the square stud or projection being
turned from the door. The moveable knob is next passed by a sliding motion on
to its spindle and up to the screw collar, the stud on the said screw collar being so
situated on the spindle that it passes through the notch or slot in the under cut or
hollow mount of the knob. The said stud on the screw collar is. now situated in
the under cut or hollow mount of the knob, and at the base of the ring-like incline
on the inner face of the said mount. By next turning the screw collar in a direc-
tion proper to remove it from the door its stud works up the incline in the hollow
or under cut mount of the knob, and binds the said collar with great tightness to
the said mount of the Inch The moveable knob is thereby securely attached to
and adjusted on its spindle.
To remove the knob from its spindle the screw collar is turned in a direction
opposite to that described until its stud comes in front of the slot or notch in the
hollow or under cut mount of the knob, when the latter is unfastened from the
screw collar and may be withdrawn from the spindle. The pin or stop at the
summit of the incline in the hollow mount limits the motion of the screw collar
and prevents the stud on the collar when the latter has been turned through nearly
a circle from passing out at the slot in the said mount.
'
For the purpose of facilitating the screwing home and unscrewing of the screw
collar a hole is drilled in the edge of the collar for receiving the point of a bradawl,
a nail, or other pointed instruineut.
When I apply my Invention to metallic knobs I make the hollow or under cut
part for receiving the locking stud on the screw collar in the shoulder at the front.
of the neck of the metallic knob, the square bush for receiving the square spindle
being made in the neck of the metallic knob behind the said hollow or under cut
shoulder.