Year: 1886

page_text: JOHN ARMSTRONG Mansion House Chambers 11 Queen Victoria Street London,
E.C. do hereby declare the nature of this invention to be as follows:-
My invention consists of Locks or Latches made and finished with both sides
alike, without the usual projections on the sides or top or bottom for fixing
purposes.
There are two extra plates provided either of which is fixed on the front end of
the locks or latches in order to make the locks or latches serve the purpose of
either rim or mortice locks or latches, (or to be fixed as a rim or nortice lock or
latch is fixed).
The method I adopt is first to make and finish the locks or latches the same on
both sides, but without the usual projections, as stated above. Upon the end or
front of the locks or latches is fixed a plate (if it be for a mortice lock or latch),
made a little wider than the lock or latch and also with projections at the top and
bottom similar to the usual projections on mortice locks or latches-this plate has
holes formed in it in the top and bottom projections for fixing purposes.
If for the purpose of a rim lock or latch, the alternative plate must be fixed on
the front face of the lock or latch instead of the plate above described-This plate
is made to fit the end of the lock or latch and to project over one side only, similar
to the projection on an ordinary rim lock or latch. There are holes formed in the
projecting part for the purpose of fixing the lock or latch.
This plate however is made and finished both sides alike so that it can be
applied to the locks or latches on either side for the purpose of making the locks
or latches serve for either right or left hand-The above plates are provided with
holes for the bolts of the locks or latches to work easily through-Also other
holes are formed in the plates for the purpose of fixing them to the locks or
latches.

page_text: Improvements in Locks and Latches.
JOHN ARMSTRONG Architect Mansion House Chambers 11 Queen Victoria Street,
London E.C. 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 the construction of Locks and Latches to be used
either as Rim-locks and Latches, or Mortise Locks and Latches, and that they
may be used on doors opening on either right or left hand or right or left reverse.
The Locks and Latches are made and finished both sides alike either ornamented
or plain as shown in figs. 4 and 10 of the accompanying drawings, and with
moveable face plates.
These face plates may be fixed to the Locks or Latches in two ways First, by
means of screws, and Second by means of spring catches or projections.
By the first method (figs. 2 and 3) the plates are finished both sides alike in
order that they may be used and fixed on either side as may be required to suit
the hand to which the door is to be opened either to the right, left-right reverse
or left reverse.
These plates are pierced with holes for the latch and locking bolts to pass
through. The plate shown in fig. 2 is fixed to the front end face of the Lock or
Latch (fig. 4) for the purpose of a Rim Lock or Latch.
The plate shown in fig. 3 is fixed on the front end face of the Lock or Latch
(fig. 4) for the purpose of a Mortise Lock or Latch.
The second method consists in providing the Lock or Latch (fig. 4) with notches,
or grooves or rebates in the top and bottom or in the sides near to the front end,
and also of having a small rim projecting all round the edge of the front end face
as shown in fig. 10.
The moveable face plates of the second method and shown at figs. 7 and 9, are
inade with an opening large enough to allow the Lock or Latch to pass through, as
far as the small rim above described on the front end face will permit.
On the inside edge of the opening there is a small groove or rebate formed
which receives the small flange rim so that when the Lock or Latch is in position,
the front end face of the latter may be in the same line as the face of the moveable
plate.
On the back of the face-plates of figs. 7 and 9, there are projections or flanges on
the sides and top and bottom of the opening. The top and bottom projections are
made to incline inwards in order that when the Lock or Latch is passed through
the opening in the face-plate these projections, which are made with a slight spring
are pressed backward until the Lock or Latch is passed through as far as the flange
rim will permit, then the inclined projections fall into the grooves or notches or
rebates in the top and bottom of the Lock or Latch (as shown in fig. 10) and thus
secures the face plate.
The notches or grooves or rebates may be formed on the sides instead of the top
and bottom of the Lock or Latch or may be formed on the top bottom and sides in
either case the projections on the face-plates are made to correspond.

page_text: The section in figs. 6 and 8 shows the projections on the back of the face-plate.
The face-plate in fig. 9 may be fixed on either end up, according to the hand which
the door is required to be opened.
Figs. 1 and 5 show elevations of the striking plate used with this kind of Lock
or Latch and is so constructed according to figs. 1. 5 and 11. with two front faces,
that it can be used as in fig. 1 with a mortise Lock or Latch, and can be used for
any hand of door by simply turning and fixing it upside down. When turned
round may be fixed as shown in fig. 5 and used with Rim Locks or Latches and
used for any hand of door by turning and fixing upside down.
There is a hole provided in the side of the Lock or Latch for the purpose of
releasing the spring catch of the head of the latch bolt, which can be withdrawn
reversed and replaced by simply pressing home the head of the latch bolt when it
is again secured by the spring.
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 Novelty in making Locks or Latches with moveable face-plates to be secured
to the Locks or Latches as herein shown and described,
2nd Novelty for a combined striking-plate to be used for either Mortise or Rim
Locks or Latches as herein shown or described.
3rd Novelty in the application of these principles to any other Locks or Latches
for the purpose of making them reversible from right to left or visa versa or of
making thein serve the purpose of either Mortise or Rim Locks or Latches all as
herein shown or described.
Dated this 16th day of March 1986