Improvements in Catches and Locks for Doors.
Year: 1899

page_text: Date of Application, 2nd June, 1899
Complete Specification Left, 2nd Mar., 1900-Accepted, 19th May, 1900
Improvements in Catches and Locks for Doors.
We, THE HONOURABLE ROBERT WILLIAM HENRY RODNEY, of The Parks, Thornbury,
Gloucestershire, Gentleman, and WILLIAM MABERLEY LLEWELLIN, 15, King Square,.
Bristol, Civil Engineer do hereby, declare the nature of this invention to be as
follows:-
Our invention relates to that class of locking bolts for which a Complete
Specification has been lodged by the Honourable Robert William Henry Rodney
bearing date of August 24, 1898 and numbered 18181.
One of our improvements consists in the method of attaching the tube-plate to
the bolt-tube. The tube plate is the plate to which the bolt-tube is fixed and
which is attached by means of screws or their equivalents to a suitable part of the
door.
We carry out this part of our invention in manner as follows:-At one or more
points in the circumferance of the hole which hole may be taper or conical of the
tube-plate into which the bolt-tube fits, a recess is formed and by preferance a
shoulder having been made on the end of the bolt tube which shouldered portion fits
into the hole of the tube-plate the shouldered portion of the bolt tube being expanded
into tight contact with the sides of the hole of the tube-plate and at the same time.
the recessed portions in the circumferance of the hole in the tube-plate has a portion
of the shouldered part of the bolt-tube forced into it.
Another method of securing the bolt tube to the bolt-plate is as follows :-a
shoulder or collar is formed on the bolt plate and the bolt-tube may be shouldered
or not as may seem desirable in any event the bolt tube is fitted into the tube-plate
as tight as possible and may or may not be expanded into the tube-plate and at the
same time is secured by means of pins or screws or their equivalents which pass
through the collar of the tube-plate into the bolt tube. A further improvement in
our invention consists in the method of putting the end piece against which the
spiral spring butts the suitable end of the tube is chamfered or tapered off preferably
from the outside to a thin edge there is placed in this chamfered end of the tube
what will be hereinafter called a disc this disc is placed so that a portion of the
chamfered edge of the tube overlaps the disc.
The disc is then expanded so as to press against the sides of the tube and the
edge of the tube is burnished over the edges of the disc.
A further improvement in our invention consists in doing away with any motion
in the handle when the door to which the lock is attached is closing.
We arrive at this result in manner as follows:-A portion of the slotted spindle
is cut away on one side namely-that side which is nearest to the hinges of the
door when the lock is in position and next to the cam or tooth in the bolt.
In order to avoid an excessive amount of play in the spindle or too much of
a revolution in the handle one side of the cam is blocked up or filled in preferably
it is the side nearest to the hinges of the door.
We do not bind ourselves however as to which sides of the spindle is cut away or
to which side of the cam is filled up as there may be cases in which the arrangement
herein before named may be altered at pleasure.

page_text: A further modification of our invention consists in adopting this our 'invention to
the purpose of night locks or latch key locks the spindle is cut off more or less flush
with the outside of the door it is proposed to fit. the lock to a plate is fixed to the
end of the spindle a suitable specially shaped hole is formed in this plate, this plate
is again covered with another plate & a hole formed in it to suit the proper key.
It will be readily understood that the method of working this arrangement is as
follows-The key is passed through the outside plate it then engages with the
special shape in the inner plate which is attached to the spindle & so the bolt is
actuated by revolving the key and the spindle which it engages with by means of
the specially shaped inner plate attached to the spindle.
Dated this 1st day of Lunes 1900
W. M. LLEWELLIN, C.E.,
15, King Square, Bristol, Agent for Applicant.
We, THE HONOURABLE ROBERT WILLIAM HENRY RODNEY, of The Parks, Thornbury,
Glos., Gentleman, & WILLIAM MABERLEY LLEWELLIN, of 15, King Square, Bristol,
Glos., Engineer, 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:—
Our invention relates to that class of locking bolts for which Letters Patent have
been granted to the Honourable Robert William Henry Rodney hearing date of
August 24th 1898 and numbered 18181. Our improvements relate to a number of
details and arrangement of the parts as well as fresh modifications in the application
to night latches and the like.
In order that this our improvement may be the more readily understood we annex
hereto one sheet of drawings which are to be taken and read as part of these
presents.
Like letters apply to like parts in all the drawings.
Figures 1, 2, & 3, show the method of fastening the bolt tube to the tube plate.
Figure 4 shows another, method of fastening the tube to the tube plate.
Figures 5 & 6 show a modification in the arrangement of the cam & the actuating
part of the handle spindle.
Figure 8 shows an arrangement for blocking up the end of the tube which serves
as an abutment for the spring (this arrangement is also shown in Figure 5).
Figures 9, 10, 11, 12, 13, show an arrangement for turning the handle spindle
with a key.
The method of fixing the tube in the tube plate will be seen on reference to
Figures 1, 2, & 3. A is the tube plate, B is the tube which is shouldered down at C,
the shouldered down portion D is inserted in the tube plate A, the hole E is tapered
the smaller end of the tapered hole being towards the shouldered end C of the
tube B. In the plate A are certain notches F into these notches the shouldered
down portion of the tube are expanded by means of suitable tools. Figure 1 shows
the tube inserted in the tube plate previous to its being expanded. Figure 2 shows
the tube expanded into the tube plate whilst Figure 3 is a plan showing the tube
expanded into its right position as regards the tube plate. Figure 4 is another
modification of fixing the tube in the tube plate the tube plate has a boss made on it.
The tube may either be shouldered down in the manner as hereinbefore described, or
it may not be shouldered. The drawing shows it shouldered down it is fixed to the
tute plate by means of a screw G. The tube may or may not be expanded in
the tube plate as may be most desirable,

page_text: In Figure 3, B₁ is the outside surface of the tube.
It will be readily understood that the object of the tube plate is for fixing the
apparatus in the edge of the door and corresponds in its function to the plate used in
connection with mortice locks for attachment to woodwork of the door.
Figures 5 and 6 are respectively a longitudinal section of a portion of the bolt and
a cross section of same at the handle spindle.
The modification shown in these figures is as follows,-
The cam space is shaped as P P P Q and the one side of the cam space is
carried down a certain required distance below the longitudinal centre line the handle
spindle is also cut away to a certain required distance Q and also a required portion
of its periphery N.
By means of this arrangement the bolt can be revolved a half. revolution and the
handle spindle M can still be inserted in its proper place after the bolt has been
so revolved.
In Figure 5, L is the bolt.
A further advantage of this arrangement is, that there is no motion in the spindle
when the catch is in the act of engaging with the striking plate and the aperture in
the striking plate.
A further improvement consists in the way the blocked up end of the tube is closed,
this is done in manner as follows:-The end of the tube is chamfered at J. A
washer H is forced into the end of the tube & expanded by compressing its two flat
surfaces the end of the tube is then beaded over at K.
Figures 9, 10, 11, 12, 13 show one method of actuating the handle-spindle by
means of a key.
R is a key having a flat end S. This flat end has a row of prongs Z. The flat
end S fits the slot T in the plate U & from thence it partially passes through the
slot V in the shield Y & then the prongs Z pass into the spaces T¹ V₁ the flat S of
the key impinges against tlie sides Y₁ of the shield Y. The shield Y has a boss W1
on the back of it and this boss is attached the end of the handle spindle M.
W is the woodwork or other material to which this arrangement is attached.
The method of operating this arrangement is as follows:-The key is passed
through the slot T the prongs Z fit into the spaces V₁ T¹ the side of the key butting
against the side Y₁ of the shield; now if any turning motion is given to the key R
it moves the handle spindle M with it in any required direction.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
1. The method of fastening the bolt tube to the bolt plate in the manner substan-
tially set forth and described.
2. The shape of the cam and cam space substantially in the manner as herein set
forth and described.
3. The carrying of the cam space sufficiently below the longitudinal axis of the
bolt so as to allow the handle spindle to be placed in position when the bolt has made
a certain required semi-revolution.
4. The cutting away of the handle spindle both longitudinally and transversely
substantially in the manner as herein set forth and described.
5. The blocking up the end of the tube substantially in the manner as herein set
forth and described.
6. The method of actuating the handle-spindle by means of a key or keys substan-
tially in the manner as herein set forth and described.
Dated this let day of March 1900
W. M. LLEWELLIN, C.E.,
15, King Square, Bristol, Agent for Applicants.