Improvements in Locking Bolts.
Year: 1896

page_text: Improvements in Locking Bolts.
1, JOHN CHARLTON of 6, South Bridge Road, Croydon in the County of
Surrey, Carpenter, do hereby declare the nature of this invention to be as
follows:-
This invention relates to an improved construction of locking bolt actuated by a.
spring so that it is self-locking and fastening, and it consists essentially of a casing
in which is fitted a circular sliding bolt which is pressed forward by means of a
volute or other suitably shaped spring acting between the rear end of the bolt and
the casing. In the casing in any suitable part of its length is an inclined bayonet
slot in which a stud or pin carried by the bolt engages the recessed part of the
slot being at its lower side, and at that end of the inclined slot nearest its rear end,
so that when the pin is pulled down in the slot the bolt is drawn back which.
compresses the spring behind it, and when it reaches the end of the slot it is kept
firmly engaged with the recess therein thereby locking it in its open position.
To shoot the bolt all that is necessary is to spring the pin carried by the bolt
out of the recess in the bayonet slot, when the spring shoots the bolt forward, the
said operating pin travelling up the inclined slot."
The eye into which the bolt is shot may be of the usual or any other convenient
type, and the size, shape and general arrangement of the bolt may obviously be
varied according to the particular use for which it is intended.
I prefer to so mount the case on the foundation plate that the whole or a part of
it can readily be detached for gaining access to the spring for the purpose of
renewing or repairing it.
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.
I, JOHN CHARLTON of 6, South Bridge Road, Croydon, in the County of
Surrey, Carpenter, 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 :-
This invention relates to an improved construction of locking bolt of the socket
I, JOHN CHARLTON of 6, South Bridge Road, Croydon, in the County of
Surrey, Carpenter, 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:-
This invention relates to an improved construction of locking bolt of the socket
In the accompanying drawing ;-
Figure 1 is a view in plan of the improved bolt, and Figure 2 is a view in side
aloration thereof

page_text: The main part A of the socket carries a sliding bolt B preferably of a round
shape in cross section. This bolt is pressed forward by means of a volute or other
suitably shaped spring C acting between the rear end of the bolt B and the closed
end a of the socket A. In the socket A in any suitable part of its length is an
inclined bayonet slot a' in which a stud or pin 6 carried by the bolt B engages and
slides the recessed part a 2 of the slot being at its lower end i.e., on the lower side
of the socket A, and at that end of the inclined slot nearest the end of the socket
enclosing the spring C so that when the pin bis pulled down on the slot the bolt B
is drawn back which compresses the spring C behind it, and when it reaches the
recessed end a of the slot it is kept firmly engaged therein thereby locking the
bolt in its open position.
To shoot the bolt all that is necessary is to spring the pin 6 carried by the bolt B
out of the recess a in the bayonet slot a' when the spring C forces the bolt forward,
the operating pin b travelling up the inclined slot.
The eye D into which the bolt B is shut may be of the type shown or any other
convenient type, and the size, shape and general arrangement of the bolt may
obviously be varied according to the particular use for which it is intended.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
The improvement in socket or locking bolts, substantially as herein before
described and illustrated by the accompanying drawing.
Dated this 17th day of November 1896.
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.