Year: 1888

page_text: I JOHN BANISTER SMITH commonly known as "Banister Smith" of Eversley
Lodge Victoria Road Putney Surrey Surveyor 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 object of this invention is to unite the essential advantages of a full way tap
or valve having a direct current of water or other fluid with great simplicity of
construction and increased strength and durability.
To effect. this I make the barrel of the tap with a direct continuous bore throughout
terminating in a solid end and cut a lateral aperture therein preferably but not
necessarily corresponding in diameter with the bore. I then fit the fore end of such
barrel with a cap that slides to and fro thereon-In the case of a ball tap or valvo
this cap is actuated by the ball or float which as it falls opens and as it rises closes
the lateral aperture.
I form a flange round the fore end of the barrel and fit the
same with a washer made either of rubber, leather, hemp, lead or of any other suitable
metal or material-This washer forms a seating for the edge of the cap when it is
closed and so renders the tap perfectly water tight.
This arrangement of a sliding cap fitting over the barrel of the tap and opening
and closing a lateral aperture therein may be readily adapted to self closing taps,
bath taps, closet taps, stop taps and other similar taps as no material modification
in the method of fitting the same to such taps is required.
As regards such taps the sliding cap may be actuated and operated by any suitable
lever or other motor as may be found most suitable and convenient as I make no claim
to any special means for actuating the same when fitted thereto.
When adapting my invention to steam taps I prefer to cut a thread on the inside of
the cap and also on the exterior of the barrel of the tap so that the lateral aperture in
the latter is opened and closed by a screw motion instead of by a sliding motion as
hereinbefore described but if the tap be worked by a sliding motion in the ordinary
way then such screw thread may be cut on the stem of the handle and in this case the
screw thread on the cap is dispensed with and such thread is cut in the bush.

page_text: Prevento e escape Of ՆԱՐԵ ԼՆ III.
DRAWINGS.
Fig. 1 of the accompanying drawings illustrates the adaptation of my invention to
a ball tap or valve. In this figure a is the bore of the tap- the solid end-c the
lateral aperture or outlet-d the sliding cap-e washer fitted to a flange or collar /
formed on the barrel which washer forms a seating for the edge of the sliding cap
when closed and so renders the tap or valve water tight is the ball lever which is
pivotted to a bearing fitted with a knuckle the latter being connected to the sliding
cap atk. In fitting the ball lever or its equivalent to the bearing hand knuckle i the
hall lever is so adjusted that when down it only withdraws the sliding cap the requisite
distance to open the lateral aperture and when up that it effectually closes such
aperture and so thoroughly prevents any leakage. The dotted outline of the cap in
this figure indicates its position when open the ball lever being down.
Fig. 2 of the drawings illustrates the adaptation of my invention to a steam tap-
In this figure m is the screw thread cut on the barrel n the lateral aperture therein
and o the threaded cap fitting over the barrel-In this arrangement the shoulder o' of
the cap takes a bearing against the end of the nozzle and so acts as a stop to prevent
the cap being withdrawn too far-The cap is either formed on or fixed rigidly to the
stem of the handle so that as the latter is operated the lateral aperture in the barrel
is either opened or closed according to the direction in which the handle is turned-
p is a suitable washer fitted to a flange on the barrel of the tap on which washer the
bottom of the cap takes its seating when closed. It is unnecessary to particularise
the other parts of the tap as they form no part of my invention.
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.
1° Forming a lateral aperture in the barrel of a ball tap or valve or of a stop tap
bath, closet self closing or other similar tap and fitting such barrel with a sliding cap
and suitable washer all constructed arranged and combined substantially in the manner
and for the purposes herein before described and shewn.
2° In a ball tap or valve or other similar tap or valve fitting the hall lever thereof
or its equivalent in such a manner as to operate the sliding cap to and fro and thus
open and close the lateral aperture formed in the barrel of the tap by the action of
such ball lever or its equivalent all substantially in the manner and for the purposes
hereinbefore described and shewn.
3° In a steam tap cutting a lateral aperture in the barrel of the tap and fitting the
same with a threaded or sliding cap whereby such lateral aperture is opened and
closed all substantially in the manner and for the purposes hereinbefore described
and shewn.