Improvements in Catches and Locks for Doors.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Catches and Locks for Doors.
I, The Honourable ROBERT WILLIAM HENRY RODNEY, The Parks, Thornbury,
Gloucestershire, Gentleman, do hereby declare the nature of this invention to.
be as follows:-
My invention relates to improvements in bolts for fastening doors and the like.
I carry my invention into practice in any of the hereinafter described methods.
The hole in the bolt through which the spindle carrying the handle passes
(this hole will be hereinafter called the spindle hole) has its top and bottom.
side cut away and fitted in one of the cut away portions a piece of metal herein-
after called the cam piece having formed on it what will hereinafter be called
a tooth or cam, this slot engages with a slot or groove formed longitudinally or
parallel to the axis of the spindle to which the handle or handles are attached
this spindle will be hereinafter referred to as the "Handle Spindle."
On the side of the bolt opposite that to which the cam-piece is fixed may be
fitted in the same or in other suitable manner but interchangeable with the
cam-piece, another piece of metal which has no tooth or cam on it, this piece
of metal will be hereinafter called the Tie Piece," this arrangement admits
of the interchanging of the cam and "Tie Pieces" in their respective positions
in the top & bottom cut away portion of the spindle-hole hereinbefore referred
to with the result that the bolt is converted from a right to a left or left to a
right handed bolt.
Another method of producing the conversion of the bolt from one hand into the
other hand consists of making the striking end of the bolt or that end which
slides over and engages with the striking plate separately from the cam end of
the bolt and is attached to same by means of a tongue in either the cam or
striking end of the bolt fitting into a chase or slot on the cam or striking
end of the bolt & being secured by means of a pin or screw passing
through the chase or slot and the tongue, it is obvious that by reversing the
direction of the striking end of the bolt by means of withdrawing pin or screw
and altering the relative position of the striking part of the bolt to that of the
cam part of the bolt and replacing the pin or screw the bolt can be converted
from right to left hand or left to right bolt as may be desired.
A still further modification is that in which the "cam" and striking part
of the bolt being made separate can be united by means of a pin & socket,
feathers & connecting pieces or any other of the usual and well known methods
of attaching the, two ends of a metal bar together in such a manner as to be
disconnected & placed in certain other pre arranged positions relative to each
other and re-connected together.
The tooth or cam can also be made as a separate piece so that it may be fitted

page_text: either on the top or bottom sides of the spindle hole as may be required specially
prepared holes for inserting the root of the tooth or cam being made in the top
& bottom sides of the spindle hole.
1000
W. M. LLEWELLIN, C.E.,
15, King Square, Bristol, Agent for Applicant.
Improvements in Catches and Locks for Doors.
I, The Honourable ROBERT WILLIAM HENRY RODNEY, The Parks, Thornbury,
Gloucestershire, Gentleman, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
My invention relates to improvements in catches and locks for doors. In
order that my invention may be more clearly understood I annex hereto one
sheet of drawings which will be taken and read as part of these presents, like
letters apply to like parts in all the figures.
Figure 1, is a longitudinal sectional elevation of the bolt or catch.
Figure 2, is a longitudinal sectional elevation of one method of jointing certain
parts of the bolt.
Figure 3, is a sectional elevation of another method of jointing certain parts
of the bolt.
Figure 4, is an elevation of the handle spindle.
Figure 5, is a transverse end view of the handle spindle.
Figure 6, is a sectional elevation of one method of the cam.
A is a round or other suitable section tube but for the sake of simplicity in
description I will in the hereinafter matter assume that it is round Into the
tube A is fitted circular portions of a bolt BB' the part B is fitted to the
part B by having one end C shouldered down into any suitable shape and fitted
into the part B in a recess suitably shaped to receive the shouldered down por-
tion C. D is a screw which passes through B and the part C and thus fixes B B¹
securely together. It will be seen by moving the part B through a half revolu-
tion when the screw. D is removed the relative position of B to B can be altered
and when the screw D is restored to its place the parts B B are again firmly
secured together. This arrangement is shown again in Figure 2.
Figure 3 illustrates another device for reversing or altering the relative posi-
tion of the parts BB.
O O¹ are fish or clamping plates which are fitted in suitably formed parts of
the bolt B B and secured together by screws 1' the part of the bolt B will be
hereinafter called the striking end and the part B will be hereinafter called the
spindle end.
Attached to the spindle end of the bolt are two pieces one of which pieces K¹
carries a tooth or cam F this tooth or cam may be fitted into the plate K' as
a separate piece as is shown in Figure 6, in which the tooth K can be moved
from the piece K¹ and placed in the piece K, the object of this is a method of
reversing the action of the spindle relative to the bolt. G is the spindle; into
the slot H of which fits the tooth or cam F. L is a handle fitted to the spindle
kept in position by screw M. E is a spiral or other suitably shaped spring
which butting against the closed end N of the tube A tends to keep the bolt B B
forced out. Z is a chamfered portion of one end of the part B¹ of the bolt which
glides over any of the usual forms of "striking plates" or their equivalents

page_text: 66
before entering a recess provided for this end of the bolt to engage in, in the usual
and well known manner in which the handle catches of locks slide over striking
plates" & engage in recesses formed in the jambs of doors.
I will now describe the method by which this device acts.
The bolt being placed in the tube and all the ports being in position as shown
in Figure 1--and if the slotted spindle is moved in the direction shown by
the arrow X the bolt B B will be drawn back in the direction of N and com-
presses the spring E. If the compressing force is now withdrawn from the
spindle G the spring E resumes its normal position and forces the bolt B, B₁,
from the tube. It will be understood that certain parts of the spindle G are
fixed in bearings attached or made in the material to which the bolt is fixed..
The spindle being only free to revolve in such bearings.
It will be obvious that the fitting pieces K K¹ can be interchanged and by this
means a further modification in the action of the spindle and the alteration
of the relative motion of the spindle to the bolt B, B1, can be effected.
"
39
From the foregoing description it will be readily understood that by altering
the relative positions of parts B & B m the manner hereinbefore described a
left handed bolt can be converted into a right handed one and
vice versa.
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:-
1. 1 claim the making of a bolt or catch substantially as hereinbefore described.
2. I claim making the bolt or catch reversable that is converting a right
handed bolt to a left handed bolt, or alternately a left handed bolt to a right
handed bolt in the manner as herein set forth and described.
3. 1 claim the combination of slotted spindle as hereinbefore described acting
on a cam or tooth as hereinbefore described and set forth.
1000
W. M. LLEWELLIN, C.E.,
15, King Square, Bristol, Agent for Applicant.