Improvements in Means for Attaching, Adjusting, and Locking Door Knobs and the like on their Spindles.
Year: 1895

page_text: Date of Application, 20th June, 1895
Complete Specification Left, 18th Mar., 1896-Accepted, 2nd May, 1896
PROVISIONAL DE MULTI
Improvements in Means for Attaching, Adjusting, and Locking Door
Knobs and the like on their Spindles.
JOHN HUBBOLD 31 Slater Street Great Bridge Tipton Staffs occupation-
Moulder, do hereby declare the nature of this invention to be as follows:-
EXPLANATION OF ACCOMPANYING DRAWINGS.
A is the knob containing recess B the knob screws on spindle C untill it reaches
lock-piece D. The lock piece D & recess B being of a corresponding shape & size.
To keep in lock piece D a washer E is slipped over spindle C (or may be made in
two halves) the washer having small holes through it by which it is attached to
door. The other knob may be made on spindle, if desired, or may be attached in
like manner to above but would need no washer, as it would be locked before
passing through lock. In cases were knobs are made of terra cotta (this may be
used in all cases if desired) a nut may be screwed up to door on opposite side to
fast knob to keep the spindle from drawing out, when the other knob in this case
would be kept on by collared washer made loose on knob & surrounding neck of
knob which when screwed to door would not allow knob to come of spindle. This
may be made in two halves if deemed practically advantageous also the internal or
external shape of washer & knob would be altered to suit spindles & knobs already
used, but the principles would be always the same.
Dated this 19th day of June 1895.
.
JOHN HUBBUED.

page_text: inside of the knob A. This knob A has a square recess B formed in its flat end
which recess surrounds the spindle C when both knob, and spindle are in position.
Fitting upon the spindle C in such manner as to slide longitudinally upon it,
while capable of being turned only with it, is the locking piece D, the outside of
which is square in shape, and of such a size as to fit the recess B in the end of the
knob A. E is a washer having a slot e formed in it which extends from one edge
to the centre, and the slot is of sufficient width to allow the spindle C to be turned
freely in it, and it has small holes e¹ formed near its edges through which screws or
pins may be passed to fasten it to the door, and thus prevent its turning on the
spindle.
One knob is cast upon or fixed to one end of the spindle and the latter being
inserted in the usual manner into the square hole in the tumbler until the fixed
knob is in contact with one side of the door, the other end of the spindle then
projects a suitable distance from the other side of the door. The locking-piece D
is then slipped on to it until it touches the door. Then the knob A is screwed
upon the spindle C until there is just sufficient space between the flat face of the
knob and the door to permit of the insertion of the washer E. Before this
washer E is inserted the lock-piece D is pressed into the recess B until it is entirely
or almost entirely contained therein. Then the washer E is placed in position and
the small pins or screws inserted, by means of which it is fastened to the door.
It is obvious that the knob A when turned must be accompanied by the turning
of the spindle C and the opening or closing of the latch. The knob A cannot be
screwed off the spindle while the lock-piece D occupies and fills the recess B in the
face of the knob A, for one cannot turn without the other; and the lock-piece D
cannot turn upon the spindle C as the latter is square and fits closely the square
hole in the lock-piece D. As long as the washer E keeps the lock piece D.inside
the recess B the turning of the knob A must be accompanied by the turning move-
ment of the spindle, but if the washer E is withdrawn the lock-piece D can be
slipped out of the recess B and the kncb A can then be unscrewed and removed
from the spindle C.
In Figs. 5 and 6 is shewn a modification in which the recess B is omitted, two or
more holes b being drilled in the face of the knob A, and the lock-piece D is
formed as shewn in Fig. 5 with two pins d projecting from it which fit into the
holes b in the face of the knob A. These serve the same purpose as the recess and
lock-piece shewn in Fig. 2. Or the recess B instead of entirely surrounding the
spindle C may be formed upon only one or two sides of the screwed hole in the
knob and a correspondingly shaped lock-piece be used which does not surround
the spindle and which can be inserted by hand when the knob is in position. Or the
lock-piece may be made in two or more pieces.
Instead of the washer E being slotted it may be made in halves, and attached to
the door in any convenient manner, or the washer may be made in two parts, one
permanently attached to the door and the other sliding into or out of the same.
Or it may be made wholly or partially of rubber and in this case, the screwing or
pinning to the door may be dispeused with. The washer in either case serves
simply to prevent the lock-piece becoming disengaged from the recess or equivalent
pin holes.
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 ;-
1. A door knob which is screwed upon a square spindle and which has a recess
formed in it, into which fits a lock-piece which when inserted and held in the
recess locks the two together in such a manner that the knob cannot be turned
without turning the spindle, but which knob can be screwed off the spindle as soon
as the lock-piece is moved out of the recess, substantially as shewn and described.
2. The combination of a door knob having a recess in its flat surface, a lock-
piece which fits therein, a square spindle screwed upon its corners, and a removable

page_text: washer, the whole being so constructed and arranged that when the lock-piece,.
knob, and spindle are in their normal positions, the knob cannot be turned without
the spindle, substantially as shewn and described.
3. The improved form of door knob, and lock-piece, substantially as described
with reference to Figs. 1 and 2.
4. The improved form of door knob, and lock-piece, substantially as shewn and.
described with reference to Figs. 5 and 6.
17.1 1
Sh 1906
JOHN HUBBOLD.