Year: 1886

page_text: I, RICHARD GEORGE LACEY, of 19 Afghan Road, in the County of Surrey,
Mariner, do hereby declare the nature of this invention to be as follows:-
My invention relates to latches of the type known as bow latches, and it is
designed by a slight addition thereto, to enable them to be either locked in place
or held free from the staple.
Upon the latch is a pivot with a head. Upon this pivot slides a slotted piece of
brass, which has attached to it a bolt or plate of the depth of the keep, above the
latch, and which, when pulled back' to its fullest extent, is clear of the said keep,
and has pressing upon it the spring of the latch. Upon turning the handle, then,
in this position, the spring is lifted, and the latch and bolt all move together, the
usual result being arrived at.
When, however, it is desired to lock the latch in place, the bolt is shot into the
keep, and fills up the space, so that the latch is prevented from rising therein and
cannot be withdrawn from the staple.
As regards that part of my invention which is designed to enable the latch to
be held free from the staple, I mount upon a pivot on the latch plate, underneath
the latch, a metal piece, formed with a convenient projection for operating the
Bame. When this is down, it is clear of the latch, but when it is turned up, and
the bolt herein before specified is clear of the keep, it holds the latch at its greatest
height, and therefore clear of the staple.

page_text: I, RICHARD GEORGE LACEY, of 19 Afghan Road, in the County of Surrey,
Mariner, 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 relates to latches of the type known as bow latches, and it is
designed by a slight addition thereto to enable them to be either locked in place or
held free from the staple.
In order that my invention may be the better understood, I now proceed to
describe the same in relation to the drawing hereunto annexed, reference being had
to the letters marked thereon.
The drawing is a perspective view of my latch in position with dotted positions
of the moving parts inserted.
A is the door upon which the latch is screwed, and B is the door post to which
is attached the latch plate. Upon the latch C is a pin or pivot D with a head.
Upon this pin or pivot slides a slotted piece of metal which has attached to it or
formed therewith a holt or plate E of the depth of the keep F above the latch,
and which, when pulled back to its fullest extent, is clear of the said keep, and
has pressing upon it the spring G of the latch. Upon turning the handle, then,
in this position, the spring G is lifted, and the latch and bolt all move together, the
latch C thereby being released from the latch plate H.
When, however, it is desired to lock the latch in place, the bolt E is shot into
the keep as shown by the dotted lines, and fills up the space so that the latch ia
prevented from rising therein, and cannot be withdrawn from the staple or latch
plate. The back of the bolt E may be formed with a recess into which the
spring G may be dropped when it is pushed home in the keep, and thus will
prevent it dropping back accidentally.
As regards that part of my invention which is designed to enable the latch to
be held free from the staple, I mount upon a pivot K on the latch plate, underneath
the lateh, a metal piece L formed with a convenient projection for operating the
Baine. When this is down, as shown in the drawing, it is clear of the latch but
when it is turned up and the bolt E is clear of the keep, it holds the latch at its
greatest height and therefore clear of the staple.
Although I have shown my latch operated by a handle in the usual fashion yet
it is obvious that it might be formed to receive a latch key, any suitable form of
engagement being provided to enable the key to engage with and rotate the
spindle..
My device may be left open or may be partially covered with a suitable plate,
projections being formed upon the bolt E, spring G, and piece L working through
slots in the said covering plate.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
1st. The combination with a bow latch of a sliding bolt engaging in the keep in
order to lock the latch in position or release same at will, substantially as and for
the purposes specified.
.
2nd. The combination with a bow latch of a pivotted piece to hold the latch
clear of the staple, substantially as and for the purposes specified.
FELL & WILDING,
1, Queen Victoria Street, London, E.C.,
Agents for the Applicant.