Improvements in Door Handles.
Year: 1889

page_text: Date of Application, 20th June, 1889
Complete Specification Left, 2nd Oct., 1889-Accepted, 4th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in Door Handles.
I JOHN ATHERTON of 179 Edinund Road Sheffield in the County of York
Brass Turner do hereby declare the nature of this invention to be as follows:-
My invention consists in an appliance to be attached to the knob of the door handle
and which will at the same time firmly grip the spindle of the door handle, the
requisite pressure for gripping the spindle being supplied by a revolving nut in the
manner hereinafter mentioned or by other convenient means.
The appliance is in two parts which are either cast together in one piece or soldered
together so as to form one article as may be most convenient. One of these parts
which I call the conical piece grips on to the spindle of the door handle while the other
part which I call the cylinderical piece is let into and held fast in the door knob.
The conical piece is a hollow truncated cone formed of metal having a screw cut on.
its outer surface at the narrow end thereof and being so shaped internally that the
spindle of the door handle will fit freely but not too loosely in it. The cylinderical
piece consists of a hollow cylinder having on its external surface a screw which fits
into a corresponding screw in the door knob and having also a collar or shoulder on
the side of the door knob which is next to the door, the thick end of the conical
piece goes into the cylinderical piece and is fastened thereto so as to become one with
it as abovementioned at the end thereof nearest the door knob and in such a way that
a portion of the conical piece having the screw on the outside surface thereof projects
beyond the shoulder aforesaid.
The said conical piece is divided along a part of its length into sections preferably
four in number by means of longitudanal cuts in the direction of the axis of the
spindle such cuts being of sufficient width to allow of the sections being pressed
inwards and so contracting the size of the hollow within the conical piece. The
conical piece may be caused to grip the spindle of the door handle by any suitable
means. A convenient arrangement for this purpose is as follows; a nut with a
thread corresponding to the screw on the surface of the conical piece is made to
revolve on that screw in manner hereinafter mentioned, namely A loose collar fits
over the nut and buts up against the shoulder before mentioned filling up the space
between that shoulder and the door.
The external circumference of the nut and the internal circumference of the collar
bear such relation to one another that revolving the collar causes the nut to revolve
with it but at the same time allows free longitudinal movement of the nut within the
collar (thereby permitting it to travel up and down the screw on the conical piece)
the adjoining surfaces of the nut and the collar being both parallel to the axis of the
handle. One way of effecting this is to make the adjoining surfaces of the nut and
the collar circular on plan but with a rib on the one fitting into a groove in the other,
such rib and groove extending for the full length of the collar and nut.
This nut being made to revolve on the conical piece the aforesaid sections of the
conical piece are contracted and firmly clip the spindle rendering unnecessary any
urther or other fastening of the knob or the handle to the spindle.
Dated this 19th day of June 1889.

page_text: COMPLETE SPECIFICATION.
Improvements in Door Handles.
I JOHN ATHERTON of 179 Edmund Road Sheffield in the County of York
Brass Turner 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 :-
My invention consists in an appliance to be attached to the knob of the door handle
and which will at the same time firmly grip the spindle of the door handle the
requisite pressure for gripping the spindle being supplied by a revolving nut in the
manner hereinafter mentioned or by other convenient means.
The appliance is in two parts which are either cast together in one piece or
soldered or fastened together so as to form one article as may be most convenient
one of these parts which I call the conical piece grips on to the spindle of the door
handle while the other part which I call the cylindrical piece is let into and held fast
in the door knob. The conical piece is a hollow truncated cone formed of metal
baving a screw cut on its outer surface at the narrow end thereof and being so shaped
internally that the spindle of the door handle will fit freely but not too loosely on it.
The cylindrical piece consists of a hollow cylinder having on its external surface a
screw which fits into a corresponding screw in the door knob and having also a collar
or shoulder on the side of the door knob which is next to the door. The thick end of
the conical piece goes into the cylindrical piece and is fastened thereto so as to
become one with it as above mentioned at the end thereof nearest the door knob and
in such a way that a portion of the conical piece having the screw on the outside
surface projects beyond the shoulder aforesaid.
The said conical piece is divided along a part of its length into sections preferably
four in number by means of longitudinal cuts in the direction of the axis of the
spindle such cuts being of sufficient width to allow of the section being pressed
inwards and so contracting the size of the hollow within the conical piece.
A nut with a thread corresponding to the screw on the surface of the conical piece
is made to revolve on that screw in manner next hereinafter mentioned.
A loose collar fits over the nut and butts up against the shoulder before mentioned
filling up the space between that shoulder and the door.
The external circumference of the nut and the internal circumference of the collar
bear such relation to one another that revolving the collar causes the nut to revolve
with it but at the same time allows free longitudinal movement of the nut within
the collar (thereby permitting it to travel up and down the screw on the conical
piece) the adjoining surfaces of the nut and the collar being both parallel to the
axis of the bandle. One way of effecting this is to make the adjoining surfaces of
the nut and the collar circular on plan but with a rib on the one fitting into a
groove in the other or with two ribs on the one fitting into two grooves in the other
as may be most practicable. This nut being made to revolve on the conical piece,
the aforesaid sections of the conical piece are contracted and firmly clip the spindle
rendering unnecessary any further or other fastening of the knob or the handle to
the spindle.
And in order that my invention may be understood and carried into effect I will
now describe it by reference to the accompanying drawings in which figure 1 in
the upper half thereof represents a longitudinal section and in the lower half
represents a longitudinal elevation of a door handle and spindle with my appliance
attached thereto and figure 2 represents a transverse section of the same across the
line y in figure 1. A is the door knob having therein a hollow space to receive
the cylindrical piece C. C is a cylindrical piece of metal having a shoulder C
This cylindrical piece is attached to the door knob either by means of a screw on its
outer surface fitting into a corresponding screw B on the internal surface of the
hollow of the door knob or by any other convenient means.
The cylindrical piece
is itself hollow so as to form a tube along part of its length. To the inner end of

page_text: the interior of the cylindrical piece is attached a conical piece of metal D either by
casting the same in one piece with the cylindrical piece or by soldering or otherwise
fastening it thereto so that it shall become one with the cylindrical piece. This
conical piece D is shaped externally as a truncated cone and has a screw cut on its
outer surface and projects as to part thereof beyond the shoulder C the narrowest
end being that which is farthest from the opening of the cylindrical piece. The
conical piece D is shaped internally so that the spindle S of a door handle (in the
figure shown for example of a square section) and which spindle is ribbed or notched
along part of its length as shewn at R will fit freely but not too loosely therein and
is divided along its length into sections preferably four in number shown in end
view at a. a. a. a. in figure 2. These cuts are of sufficient width to allow of the
section being pressed inwards and so contracting the size of the hollow within the
conical piece A nut E with an internal screw thread corresponding to the screw on
the conical piece and having also a groove b. c. d. e. cut in the edge thereof is placed
on the conical piece and a collar F having on one part of its internal surface a screw
thread which fits into a corresponding screw on the shoulder C and on another part
of its internal surface a rib G is placed so as to fill up the space between the
shoulder C and the surface of the door and also so that the screw of the collar F
takes into the screw on the shoulder C and the rib on the collar F fits into the
groove a. b. c. d on the nut E. The collar F being then made to revolve so the
nut E will revolve with it and by turning the collar in one direction the nut will
advance along the conical piece contracting the sectious thereof and gripping firmly
the spindle of the door handle. If it be desired to remove the spindle the collar
is turned in the opposite direction when the pressure on the section will be
relieved and the spindle may be withdrawn. The nut may be made with two ribs
each fitting into a corresponding groove in the conical piece or any other convenient
means may be adopted for contracting the sections of the conical piece and making
it grip the spindle but I do not claim the revolving collar and nut nor the means
herein before described of making the conical piece grip the spindle. Neither do
I claim the means hereinbefore described for attaching the cylindrical piece to the
door knob.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
The construction and use in connection with Door handles and for the purpose of
fastening the door knob to the spindle of the appliance herein before described
consisting of the combination of the cylindrical piece C with the conical piece D
the cylindrical piece being fastened to the door knob and the conical piece being
made to close upon and grip the spindle of the door handle as hereinbefore
mentioned.
Dated this Thirtieth day of September 1889.
TOUN ATHERTON
JOHN
ATHERTON