IMPROVEMENTS IN SECURING KNOB HANDLES TO THE SPINDLES OF DOOR LOCKS AND LATCHES
Year: 1876

page_text: LETTERS PATENT to Richard Robinson, junior, of 31, Great Western Terrace,
in the Parish of Paddington, for the Invention of "IMPROVEMENTS IN SECURING
KNOB HANDLES TO THE SPINDLES OF DOOR LOCKS AND LATCHES."
Sealed the 21st July 1876, and dated the 21st February 1870.
PROVISIONAL SPECIFICATION left by the said Richard Robinson at the Office
of the Commissioners of Patents on the 21st February 1870.
RICHARD ROBINSON, junior, of 31, Great Western Terrace, in the Parish of
Paddington. "IMPROVEMENTS IN SECURING KNOB HANDLES TO THE SPINDLES OF
DOOR LOCKS AND LATCHES."
This Invention has for its object improvements in securing knob handles to the
spindles of door locks and latches. For this purpose I form one of the knobs with
a cylindrical stem standing out from it, to which is secured one end of the lock
spindle. The cylindrical stem is to enter partly into a cylindrical recess in a rose
or ring secured to one side of the door.
On the opposite side of the door is also secured a rose or ring with a similar
cylindrical recess in it; the lock spindle, after being passed through the lock and
door passes freely through and projects beyond this recess; at its end it has a
screw thread cut upon it, on to which the other knob is to screw, the knob having
for this purpose a metal nut fixed within it.
Within the cylindrical recess in the rose or ring on this side of the door is received.
a cylindrical collar which surrounds the spindle, and is free to slide to and fro upon.
it. This collar is square internally, and has fitting within it a square tube of sheet.
metal, the collar and tube being of the same length. The square tube fits over the
square portion of the spindle; it is also slit longitudinally on one side for a portion;
of its length to form a tongue, which is bent outwards, and forms a spring to bear
against the interior of the collar. When the spindle has been passed through the
door the screw knob is screwed on to its end until a small square projection
from the knob comes against the end of the inner square tube contained in the
collar, as before mentioned, and presses this tube and the collar to the bottom of the
recess in the rose plate. When the screw knob has been screwed up as tightly as
required the sliding collar is drawn forwards upon the square tube within it; its:
end then embraces the small square projection upon the knob and thereby prevents
the knob from becoming unscrewed. When the collar has been thus drawn forwards
•
"

page_text: the free end of the spring tongue of the square tube within the collar springs out-
wards and enters into a recess in the interior of the collar, and thereby locks the
collar and impedes it from shifting back; or other means may be adopted for pre-
venting the collar from shifting back after it has been drawn forward to lock the
screw knob.
In place also of the sliding collar being mounted upon the spindle the arrange-
ment might be reversed and the sliding collar be carried by the knob.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Richard Robinson in the Great Seal Patent Office on the 21st August
1876.
RICHARD ROBINSON, junior, of 31, Great Western Terrace, in the Parish of
Paddington. "IMPROVEMENTS IN SECURING KNOB HANDLES TO THE SPINDLES OF
DOOR LOCKS AND LATCHES."
This Invention has for its object improvements in securing knob handles to the
spindles of door locks and latches. For this purpose I form one of the knobs with
a cylindrical stem standing out from it, to which is secured one end of the lock
spindle. The cylindrical stem is to enter partly into a cylindrical recess in a rose or
ring secured to one side of the door.
On the opposite side of the door is also secured a rose or ring with a similar
cylindrical recess in it; the lock spindle, after being passed through the lock and
door, passes freely through and projects beyond this recess. At its end it has a screw
thread cut upon it, on to which the other knob is to screw, the knob having for this
purpose a metal nut fixed within it.
Within the cylindrical recess in the rose or ring on this side of the door is received
a cylindrical collar, which surrounds the spindle, and is free to slide to and fro upon
it. Tbis collar is square internally, and has fitting within it a square tube of sheet
metal, the collar and tube being of the same length. The square tube fits over the
square portion of the spindle; it is also slit longitudinally on one side for a portion
of its length to form a tongue, which is bent outwards and forms a spring to bear
against the interior of the collar. When the spindle has been passed through the
door the screw knob is screwed on to its end until a small square projection from
the knob comes against the end of the inner square tube contained in the collar,
as before mentioned, and presses this tube and the collar to the bottom of the recess
in the rose plate. When the screw knob has been screwed up as tightly as required,
the sliding collar is drawn forwards upon the square tube within it. Its end then
embraces the small square projection upon the knob, and thereby prevents the knob
from becoming unscrewed. When the collar has been thus draw forwards the free
end of the spring tongue of the square tube within the collar springs outwards and
enters into a recess in the interior of the collar, and thereby locks the collar and
impedes it from shifting back; or other means may be adopted for preventing
the collar from shifting back after it has been drawn forward to lock the screw
knob.
In place also of the sliding collar boing mounted upon the spindle the arrange-
ment might be reversed and the sliding collar be carried by the knob.
In order that my Invention may be fully understood I have shewn at Figure 1 of
the Drawing annexed a pair of knob handles secured to the spindle of a door lock in
the manner above described.
A, A, shews part of the woodwork of a door; A', the slot or mortice for receiving
the lock; B is the lock spindle, which, as usual, is square in cross section; the lock
is not shown, as it may be of any ordinary construction. One end of the lock
spindle enters into the end of a cylindrical stem C of one of the knobs D, and is
secured to it by a pin or otherwise. The cylindrical stem enters and turns within

page_text: a cylindrical recess in a rose plate. To form such cylindrical recess I prefer to
make the rose plate in the manner shewn. It is composed of a metal piece E
secured to the side of the door by screws; surrounding this metal piece is an
ornamental ring F of earthenware or lava, or other suitable material, held up to the
side of the door by a collar on a tube G which screws into the piece E and forms a
bearing for the cylindrical stem of the knob to turn in. The rose plate on the
opposite side of the door is constructed in the same way. The square portion of
the spindle B passes through this rose plate and projects beyond it. The end of the
spindle has a screw thread cut upon it, as shewn. The knob H, which is to be
secured to this end of the spindle has fixed within it a metal nut I to screw on to
the screw thread of the spindle. At the end of the nut is a small square projection
K, as shewn at Figures 2, which represent a side view and end view of the knob H.
The square projection K is of the same cross section as the square portion of tho
spindle. The end of the square portion of the spindle is embraced by the square
tube L. This tube lies within a long collar M, which externally is cylindrical and
fits and turns within the cylindrical recess of the rose plate, and internally fits over
the exterior of the square tube L. Separate views of the tube L and cylindrical
collar M are shewn at Figures 3 and 4. N is a washer shewn separately at Figure 5.
It is placed at the bottom of the recess in the rose plate, and turn with the spindle.
When the spindle has been passed through the door and lock, the tube L with the
collar M surrounding it is slipped on to the square portion of the spindle; the knob
is then screwed on to the spindle until its square projection K has pressed the end
of the square tube L up to and against the washer N at the bottom of the recess in
the rose plate; the cylindrical collar M is then shifted endwise along the tube L,
and its end caused to embrace the square projection on the knob whereby the knob
will be prevented from turning on the spindle.
To prevent the collar M from moving endwise too freely the square tube Lis
formed with a small spring O, the end of which projects and enters a shallow recess
in the interior of the collar.
Having thus described the nature of my Invention, and the manner of performing
the same, I would have it understood that I claim the combined arrangement, sub-
stantially as herein-before described, for securing knob handles to the spindles of
door locks and latches.
In witness whereof, I, the said Richard Robinson, junior, have hereunto set my
hand and seal, this Fifth day of August, in the year of our Lord One
thousand eight hundred and seventy-six.
RICHARD ROBINSON, JUNIOR. (L.S.)