Year: 1886

page_text: Date of Application, 18th Nov., 1886.
Complete Left, 15th July, 1887.
Complete Accepted, 7th Oct., 1887.
I, JOHN GIFFORD REDGRAVE, Clerk of 63 Coventry Road, Birmingham in the
County of Warwick do hereby declare the nature of this invention to be as
follows:-
The invention, consists in the application of a lock, to a brass beer, wine or spirit
tap or cock, in such a manner, that on turning the tap off, the bolt of the lock shoots
into the plug of the tap, and thus secures it. The bolt is withdrawn by turning a
small key in the lock.
There are several ways of doing this but the one generally preferred is as
follows:-
A small hole is made through the barrel of the main casting of the cock, (a little
above the waterway) and in front of the cock, This hole has a corresponding hole in
the plug so that when the tap is turned off a bolt may be put in the holes and thus
secures the plug from turning. This bolt is enclosed in a metal tube, and is kept in
position by a coil spring, placed round the bolt and so fixed that the spring presses
the bolt into the plug, The object is now to withdraw the bolt with a small key and
can be done as follows, The end of the bolt that does not fit into the plug is screwed
a short distance down. (The inside of the key is screwed to fit the screwed end of the
bolt.) A disk of metal is either cast or screwed inside the tube, and which allows the
screwed end of the bolt to project sufficiently for the screwed key to bite.
On turning the key in the tube or lock the bolt is withdrawn, and on with-
drawing the key and turning the tap off the bolt springs back into the plug and so
secures it.
Another method is by having the surface of the disk beforementioned, tapering off
as much as possible at the bottom and remaining thick at the top and a piece of metal
attached to the outside end of the bolt tapering in the same degree as the disk and so

page_text: placed that when the tap is locked the piece of metal on the bolt touches the thin edge
of the disk,-
-on turning the bolt round with the key the piece of metal turns round
until it reaches the thick part of the disk-In doing this, it has withdrawn the bolt
the length of the thickness of the disk which will be sufficient to unlock it, In this
case a key may be used similar to a clock key and the end of the bolt made square to 5
fit it or it may be made any shape so that the key will turn the bolt round-Screwing
the plug and key would in this case be dispensed with.
Dated this 18th day of November 1886.

page_text: I, JOHN GIFFORD REDGRAVE of 63 Coventry Road, Birmingham in the County of
Warwick Manufacturers Clerk 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 :-
The invention, consists in the application of a lock, to a brass beer, wine or spirit
tap or cock, in such a manner that on turning the tap off; the bolt of the lock shoots
into the plug of the tap and thus secures it. The bolt is withdrawn by turning a
small key in the lock.
There are two ways of doing this but the one generally preferred is as follows:-
A small hole E Figure 1 is made through the barrel F of the main casting of the
cock (a little above the waterway B and in front of the cock). This hole E has a
corresponding hole D in the plug A so that when the tap is turned off a bolt G may
be put in the holes E & D and thus secures the plug A from turning. This bolt G
is enclosed in a metal tube and is kept in position by a coil spring H placed round the
bolt G and so fixed that the spring H presses the bolt into the plug. The object is
now to withdraw the bolt with a small key and is accomplished as follows:-the end I
of the bolt G that does not fit into the plug is screwed a short distance down and the
inside of the key Fig. 2 is screwed so that it will screw on to the screwed end of the
bolt. A disk of metal J is either cast or fastened inside the tube at such a distance
from the end that will allow of the screwed end of the bolt to project a little way
through a small hole in the disk inside the tube. The action is as follows:-On
turning the key in the tube or lock the bolt is withdrawn and remains so, as long as
the key is in the lock, but immediately the key is unscrewed the spring presses the
bolt against the plug and when the tap is turned off the bolt shoots into the plug
and thus secures it. The other method is by having the surface of the disk Q Fig. 3
beforementioned tapering off as much as possible at the bottom and remaining thick
at the top and a piece of metal P attached to the end of the bolt that protrudes through
the disk. This piece of metal tapers in the same degree as the disc and is so placed
that when the tap is locked the piece of metal touches the thin part of the disk Fig. 4.
On turning the bolt round with the key the piece of metal turns round until it reaches
the thick part of the disk-In doing this the bolt R will be withdrawn at the same
time, in proportion to the thickness of the disk Q. This will be found sufficient to
unlock the tap. In this case a key may be used similar to a clock key and the end of
the bolt made square to fit it, or it may be made in any other shape in which the
key would turn the bolt round.

page_text: 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. The screwed key and bolt in conjunction with the disk for withdrawing the bolt
from the plug.
2. A spring for pressing the bolt into the plug substantially as herein set
forth.
Dadh: tul
TI 1003