IN LATCHES AND LOCKS."
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by the said George Edward Wilson at
the Office of the Commissioners of Patents on the 13th April 1881.
GEORGE EDWARD WILSON, of Leeds, in the County of York.
IN LATCHES AND LOCKS."
"IMPROVEMENTS
One part of my Invention consists in the construction of a latch or lock in such
a manner that it may be disengaged from a catch plate by pulling the knob or
handle on the side towards which the door opens, or by pushing the knob or handle
on the other side. The action of pulling or pushing the knob without turning it
round serves to open the door.
Another object of my Invention is to prevent the latch or bolt projecting after
being withdrawn from the latch plate beyond the face of the door frame, and to
retain it in that position until the door is closed again, thus preventing passing
objects being caught or torn thereby, as is frequently the case where the bolt or
latch is allowed to project on open doors.
The latch constructed in accordance with my Invention is provided with a tubular
or rectangular casing; within it is carried the latch to which a direct sliding
movement is given. This is effected by a projecting piece on the knob spindle,
which operates or engages with an incline or cam formed on an extended portion
of the bolt or latch within the casing, so that the projecting piece by pushing or
pulling the knobs moves down the incline, and thus withdraws the bolt or latch
from the catch plate. The bolt or latch is forced back again into its projecting
position by a spiral spring or its equivalent, but in order to retain it in its with-
drawn position until the door is closed I provide a side spring stop arrangement,
which drops into a recess in the bolt or latch the instant it is withdrawn from the
catch plate. On this side spring stop arrangement is provided a projecting piece,
which on the door being closed is pushed inwards and relieves the latch or bolt,
allowing it to pass automatically into the catch plate.
The latch or bolt may be provided with a locking arrangement for preventing it
being withdrawn from the catch plate, this being brought into operation and
released when required by an ordinary key.
My Invention may be applied either as a rim or mortice lock or latch.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Edward Wilson in the Great Seal Patent Office on the
13th October 1881.
GEORGE EDWARD WILSON, of Leeds, in the County of York.
IN LATCHES AND LOCKS."
"IMPROVEMENTS
One part of my Invention consists in the construction of a latch or lock in such
a manner that it may be disengaged from a catch plate by pulling the knob or
handle on the side towards which the door opens, or by pushing the knob or handle
on the other side. The action of pulling or pushing the knob without turning it
round serves to open the door.
Another object of my Invention is to prevent the latch or bolt projecting after
being withdrawn from the latch plate beyond the face of the door frame, and to
retain it in that position until the door is closed again, thus preventing passing
objects being caught or torn thereby, as is frequently the case where the bolt or
latch is allowed to project on open doors.
The latch constructed in accordance with my Invention is provided with a tubular
or rectangular casing; within it is carried the latch, to which a direct sliding
movement is given. This is effected by a projecting piece on the knob spindle,
which operates or engages with an incline or cam formed on an extended portion
of the bolt or latch within the casing, so that the projecting piece, by pushing or
pulling the knobs, moves down the incline, and thus withdraws the bolt or latch
from the catch plate. The bolt or latch is forced back again into its projecting
position by a spiral spring or its equivalent, but in order to retain it in its with-
drawn position until the door is closed I provide a side spring stop arrangement,
which drops into a recess in the bolt or latch the instant it is withdrawn from the
catch plate.
On this side spring stop arrangement is provided a projecting piece,
which on the door being closed is pushed inwards and relieves the latch or bolt,
allowing it to pass automatically into the catch plate.
The latch or bolt may be provided with a locking arrangement for preventing it
being withdrawn from the catch plate, this being brought into operation and
released when required by an ordinary key.
My Invention may be analind withon on
nim
an mautions look on latch
Fig. 1 is a longitudinal elevation with sido plate removed; Fig. 2, a plan with
top plate removed; Fig. 3 an end elevation, shewing position of lock or latch when
fitted in door frame; Fig. 4, a sectional plan, shewing apparatus for retaining the
latch or bolt within door frame.
The latch constructed in accordance with my Invention is provided with a tubular
or rectangular casing a; within it is carried the latch or bolt b, fitted so as to slide
freely. The sliding movement is effected by a projecting piece c on the knob
spindle d, which operates or engages with an incline or cam e formed on an extended
portion of the bolt or latch b within the casing a, so that the projecting piece c, by
pushing or pulling the knob f in the direction shewn by arrows, moves down the
incline e, and thus withdraws the bolt or latch 6 from the catch plate of ordinary
construction. The bolt or latch b is forced back again into its projecting position
by the spring g or its equivalent.
In order to retain the bolt or latch in its withdrawn position I provide the
spindle h with its bearings at i and j in the sides of the case a, and having thereon
a projecting piece k, which passes into a slot, hole, or recess in the bolt or latch b.

page_text: This movement of the spindle h is produced by the spring m.
On the door being
closed the jamb presses down, the set screw or pin n at the end of the spindle h,
which forces the projecting piece k from the recess or slot 7, and allows the bolt or
latch 6 to shoot out and pass into the catch plate.
This may be applied also to latches of ordinary construction.
The latch or bolt b may be provided with a locking arrangement o for preventing
it being withdrawn from the catch plate, this being brought into operation and
relased when required by an ordinary key.
My Invention may be applied either as a rim or mortice latch..
Having now described the nature of the said Invention, and shewn by Drawings
how the same may be carried into practice, I would have it understood that I do
not limit myself to the precise limits, details, or configuration of the parts I have
expressed and shewn, as the same may of course be varied or modified without in
any way departing from the nature or principle of my Invention, but what I claim
and desire to be secured to me by Letters Patent is,―
First. The arrangement, construction, and application of latch, substantially as
herein set forth, either with or without lock attachment o.
Second. The arrangement, construction, and application of spindle h, and parts
connected therewith, for retaining the bolt bin its withdrawn position, substantially
as and for purposes herein set forth.
In witness whereof, I, the said George Edward Wilson, have hereunto set
my hand and seal, this Eleventh day of October, in the year of our Lord
One thousand eight hundred and eighty one.
GEORGE EDWARD WILSON. (L.S.)