Improvements in Valves relating to Pneumatic Appliances.
Year: 1892

page_text: Date of Application, 31st Dec., 1892
Complete Specification Left, 2nd Oct., 1893-Accepted, 4th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in Valves relating to Pneumatic Appliances.
We, THOMAS GUTHRIE Painter of 3 Thorney Terrace South Shields in the
County of Durham and WILLIAM THOMAS HALL Schoolmaster of 1 Whitburn
Terrace South Shields in the County of Durham do hereby declare the nature of
this invention to be as follows :-
It consists of a brass or other metal tube, threaded on one end (a) upon which is
placed a cap (b). The bottom of cap is pierced by one or more holes (c) to
allow the air from the inflator to pass up the tube or back again when valve is
open.
To work the valve a short piece of rubber tubing (d) is slipped over the cap and
the cap is turned to allow the end of tube (a) to leave the washer (e) at the bottom
of the cap..
The air is then forced into the vessel by an inflator attached to rubber tube (d)
& upon inflation the cap is turned back again so as to bring the end of tube closely
against the washer (e) so closing the valve. To fill up the vacancy between
the cap & flange of tube a flexible rubber ring (f) is placed between them.
Dated this 29th day of December 1892.
THOMAS GUTHRIE.
WM. THOS. HALL.
COMPLETE SPECIFICATION.
Improvements in Valves relating to Pneumatic Appliances.
We, THOMAS GUTHRIE, Painter of 3 Thorney Terrace and WILLIAM
THOMAS HALL, Schoolmaster of 1 Whitburn Terrace both in South Shields in
the County of Durham, 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 has reference to improvements in valves relating to pneumatic
appliances.
We will fully describe our invention with reference to the accompanying
drawings in which
Figure 1 shows a longitudinal sectional elevational view with the valve open
and
Figure 2 an elevational view with the valve shut and in the following description
like marks of reference designate like parts.
Referring to the drawings, a is a brass or other metal tube with an extension a¹
thereon whose outer surface is threaded or screwed to take the brass or other metal
cap b. At the base of the threaded or tapped portion of the cap b we form a
recess in which we place a rubber or other washer e and we further pierce the body
of the cap with holes c as shown in the drawings. The end a² of the tube a is
formed of a nozzle shape so that it can easily be inserted and adapted for use
when required for inflating purposes. d is an india rubber or other flexible tube
one end of which is intended to be fitted over the cap b and the other end is
similarly intended to be attached to the air-pump or other inflating mechanism.
To use the valve, the tube a is withdrawn from the cap 6 by unscrewing these
parts until the end of the extension a' uncovers the holes c; the inflating nozzle a³
having been inserted or secured where required, the air-pump is started to force
air along tube d; the air passes along d and through holes c and tube a to the

page_text: vessel to be inflated. When inflated the tube a and cap 6 are by a turn or two of
the screw drawn into each other until the end of the extension a' covers the holes c
and firmly abuts against the washer e to form an air-tight joint, whereby escape of
air from the inflated vessel is prevented.
fis a washer which is compressed when the valve is shut and more or less free
when the valve is open, to aid in maintaining an air-tight jointing.
The parts pp of the tube and cap may with advantage be milled to give a
better grip for the fingers when turning these parts for shutting and opening the
valve.
It will be observed that there is no clack in this valve and that its simplicity
ensures precision in its working.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:-
1. The combination of a tube a having a screwed extension a¹ with the cap b
having holes c and washer e, these several parts being formed, arranged and
adapted for use substantially as herein set forth.
2. The combination of parts forming an improved pneumatic valve appliance
substantially as set forth.
Dated this 30th day of September 1893.
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.