Improvements in the Casing and Fixing of Locks to Doors.
Year: 1887

page_text: Date of Application, 8th Dec., 1887
Complete Specification Left, 8th Sept., 1888
Complete Specification Accepted, 30th Nov., 1888
Improvements in the Casing and Fixing of Locks to Doors.
I LEWIS WILLIAM GOOLD of Erceldoune Cambridge Road, Kings Heath in the
County of Worcester Architect do hereby declare the nature of my said invention to
be as follows:-
My invention has for its object improvements in the casing and fixing of locks to
doors and refers more particularly to those locks which are fixed on and project from
the face of the door and are commonly known as rim locks. They have been fixed
to doors where economy is essential and which have been too thin to allow of a
mortice lock being inserted without considerably weakening it consequently they
have projected and the result has been most objectionable and their appearance
unsightly besides being a nuisance by causing the knob and key when in to project
so far out as to frequently catch in the garments of persons passing through the
doorway.
My improvements consist of an extension of the outside casing plate of the lock
past the rim on three sides and a further extension of a portion of same sufficiently
far up and down the meeting stile and along the lock rail to strengthen the door
because cut away sufficient material on the inside to allow the whole thickness of
the lock being inserted until the projecting portions of the front plate meet the
surface of the door and each are then seperately screwed down to the particular
portion of the door they are upon by independent screws the door thereby having its
weakened part thoroughly strengthened indeed the front plate forms a broad T strap
which straps the top and bottom of meeting stile and lock rail together in a thoroughly
substantial manner while the outside plate of the lock is level or nearly level with the
surface of the door and the plain surface of the plate renders decoration of any kind
easy while the top and bottom projections act as a finger plate in the particular
position required.
A portion of the front plate may be bent over to form the one end of the lock
as in ordinary rim locks and the whole of the other parts and mechanism may be as
hafara

page_text: I may use any kind of box the most simple being to notch out the door lining on
the inside and screw a strip of metal on the face which would also act as a striking
plate.
My invention applies equally to drawback locks or such other bulky locks which
have to be fixed to a door so thin that it would be weakened by the lock being
morticed or otherwise inserted.
In case of very thin doors I may have a casing plate on each side the door and
each having the projections in which case the lock would take up a space cut out of
the door and I may then have pins fixed to the inside of the plate on the outside
of the door which would pass through the door and plate on the inside and he tightly
drawn up and secured by nuts or other contrivances."
LEWIS WM. GOOLD,
Erceldoune, Cambridge Road, King's Heath.

page_text: Improvements in the Casing and Fixing of Locks to Doors.
I LEWIS WILLIAM GOOLD of Erceldoune Cambridge Road, Kings Heath in the
County of Worcester, Architect do hereby declare the nature of my said 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 has for its object improvements in the casing and fixing of locks to
doors and applies more particularly to those locks known as rim locks which are fixed
upon and project from the face of the door thereby forming a projection which is
most objectionable and unsightly as the rim and constructional parts of the locks are
exposed to view. Such locks are much used on account of the prevailing tendency
for economy by using doors so thin that they would be materially weakened by the
insertion of a mortice lock.
Further objections to the rim lock are to be found in the fact that it is necessary
to have the key long enough to pass through the whole thickness of the door so as to
allow of entering the lock from the outside so that when in accordance with the
prevailing custom the key is left in the lock on the inside, the depth of the lock and
the length of the key form a projection which has a tendency to catch in the garments
of those passing through the door. Again the bolt box of the rim lock necessitates
the cutting away of the architrave of the door and is secured with screws which are
so placed that the thrust of the door when being forced open from the outside is in
that direction most suitable for withdrawing them.
Now by my invention the lock is set flush with the face of the door however thin
it may be without materially weakening it while at the same time a finger plate is
formed in the most serviceable position of the door this being a combination of great
utility in the case of cheap doors which doors have not hitherto been usually pro-
vided with finger plates.
This arrangement also allows of a much shorter key being used and a catch plate
in place of the old box which does not necessitate the cutting away of the architrave
and is fixed by screws which are so placed that the thrust is against their side instead
of their head.
As my invention relates particularly to the casing a great advantage is gained by
the option of the use of any class of mechanism or furniture.
In order that my invention may be clearly understood and more easily carried into
practice I have appended hereunto four sheets of drawings upon which I have fully
illustrated my improvements.
On Sheet 1
Figure 1 is an elevation of the back of the casing of a lock the internal mechanism
of which is not shewn as it is not affected by my improvements.
Figure 2 is a section through same on line 1. 2.
Figure 3 is a front elevation of a portion of a door, shewing the cutting away for
the lock to be inserted.
Figure 4 is a front elevation of the catch plate.

page_text: Figure 9 is a view of the catch plate fixed complete.
On Sheet 3
Figure 10 is a front elevation of a lock shewing a modification by which the
mechanism can be reached without removing the lock and plate from the door.
Figure 11 is a section of same on line 3. 4 but also showing it fixed to a portion of
the door.
Figure 12 is a front elevation of a modification particularly applicable to very thin
doors.
Figure 13 is an end elevation of same but also shewing it fixed to a portion of the
door.
Figure 14 illustrates the direction of the thrust upon the screw in the case of the
old class of box, and,
Figure 15 illustrates the same with regard to the catch plate used with these locks.
Figure 16 is a view of a lock having an enamel front plate and showing how the
mechanism is secured to same.
Figure 17 is a sectional plan through same on line 7. 8. shewn on Figure 19.
Figure 18 is a sectional plan through same on line 9. 10.
Figure 19 is a section through same on line 11. 12.
Figure 20 is a section showing a modification in which the finger or strengthening
plate is separate from the lock but fixed in contact with same.
Figure 21 is another similar modification.
On Sheet 4
Figure 22 is a general view of the inside of a door partly open having one of my
locks with an ornamental brass or bronze plate fixed thereto.
Referring to Sheet 1 of the drawings again the plate A forms the outside casing of
the lock to which the rim E and inside mechanism is attached, the portion a¹ of the
said plate being turned round with a sharp angle to form the one end of the lock
through which the bolts pass.
The plate A is provided with an extension B above the lock and a similar extension D
below and is also extended at a² for some distance past the rim E or mechanism.
A portion of the face of the door is cut away as shewn by Figure 3 to receive the lock
which is inserted and fixed flush as shewn by Figures 7 and 8 the extension B being
fixed by the screws and 2 to the portion of the stile F above the lock and the
bottom extension D by the screws d¹ and d to the portion of the stile F below the
lock the extension a being secured to the lock rail H by the screws and h² thus
not only firmly fixing the lock but providing a finger plate on the extreme edge of
the door and enabling a thick common lock to be inserted within the thickness of a
thin door without materially weakening it.
This arrangement allows of a catch plate being used as shewn by Figures 4, 5 and 6
which obviates the objectionable projection of the box S shewn by Figure 14 which
necessitates cutting away the architrave and which has been found necessary for that
class of locks and further it will be readily seen that the catch plate shewn by
Figures 4, 5, 6, 9 and 15 is much more capable of resisting the thrust in case of
the door being burst open than the box shewn by Figure 14, the arrows X in this
and Figure 15 denote the direction of the thrust which in the case of the box S has
a tendency to withdraw the screws while in the case of the catch plate Y the thrust
is against the side of the screw 2 and has therefore a much more resisting power.
In place of having the mechanism and rim of the lock fixed upon the back of the
front plate A I may stamp or otherwise form a recess in the said plate as shewn by
A in Figures 10 and 11 in which case the cover plate A is screwed on from the out-
side to the back part A by the screws a³ and a" and the whole of the mechanism is
also secured to the A part of the plate which in this case forms the back of the lock.

page_text: In the case of very thin doors the locks as before described may be used in con-
junction with a second plate R as shewn by Figures 12 and 13 upon which are fixed
the pins or bolts so as to pass through the door and plate A of the lock and thereby
enable the portion of the door containing the lock to be securely clamped between
from the inside by the nuts 2 or their equivalents.
I am aware that locks have been let into the face of the door also that doors con-
taining mortice locks have been strengthened by similar plates to A but as the mortice
lock is so fixed as to leave material on each side of it, it will readily be seen that in
thin doors the side upon which the plate is not fixed is so thin that it has a tendency
to break away and in addition to that great difficulty is experienced in securely fixing
the furniture to such a thinness of material, to obviate this difficulty i construct a lock
for insertion in the face of the door and combine with it a strengthening finger plate
having key hole to suit the position of the keyhole in the lock the mechanism being
so arranged as to bring the key hole in the centre of the finger plate in this case the
lock is fixed separately as shewn by Figures 20 and 21 the strengthening finger plate
of whatever shape being fixed in close contact against the lock by which arrangement
I leave the whole remaining thickness T of the door to allow of the substantial fixing
of the furniture on that side.
To prevent the screws which hold in the cover plate K Figure 1 from passing
through and shewing upon the face of the finger plate A I provide the ears e¹ and e
Figure 2 which are rivetted into the rim E and which receive the ends of the screws e³
and e¹ for securing the cover plate K in position.
I may finish or ornament the finger plate in any desired way or form it of any
class of suitable material for instance the metal plate A may be cased in ornamental
brass the edges of which would be returned and pressed round the edges of the
plate or the plate may be enamelled in which case a separate casing to contain
the mechanism would be fixed to the finger plate as shewn by Figures 16. 17. 18
and 19 as the process of enamelling would interfere with the portion of the mechanism
which it would be necessary to have fixed to the outer plates and the rivetting would
leave a defective mark in the enamel. I therefore obviate this by rivetting one end
of the separate casing V at the top and bottom 2 to the returned end of the finger
plate A which return does not require to be enamelled the other end of the casing V
is rivetted to the plate A near the spindle of the lock at vand ve so that the cap of
the handle would hide any slight defect in the enamel.
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 :—
First In the improvements in the casing and fixing of locks to doors a lock
having an outside strengthening plate which forms a part thereof as well as a finger
plate substantially as and for the purpose herein set forth and shewn upon the
accompanying drawings.
Second In the improvements in the casing and fixing of locks to doors the use
of a strengthening finger plate separate from but in contact with lock substantially
as and for the purpose herein set forth and shewn upon the accompanying drawings.
Ondah 7th 3000
GEORGE BARKER,
77, Colmore Row, Birmingham,
Agent for the Applicant.