An Automatic Apparatus for Starting Alarm Bells or Opening Ventilators or Valves at any given Temperature.
Year: 1895

page_text: Date of Application, 2nd May, 1895
Complete Specification Left, 1st Feb., 1896-Accepted, 7th Mar., 1896
PROVISIONAL SPECIFICATION.
An Automatic Apparatus for Starting Alarm Bells or Opening
Ventilators or Valves at any given Temperature.
I LEWIS LEVI 1 Jubilee Avenue Goulton Street Hull in the County of York
Brass Turner and Fitter do hereby declare the nature of this invention to be as
follows:-
The apparatus consists of a cylinder with well attached thereto containing
mercury the said mercury actuates a piston & rod in the cylin ler by means of the
temperature, of air or water or whatever it may be connected to, rising or falling &
the piston being so arranged as to work a switch in connection with electric wires
or the lever of a valve or ventilator.
An Automatic Apparatus for Starting Alarm Bells or Opening
Ventilators or Valves at any given Temperature.
I LEWIS LEVI of 1 Jubilee Avenue, Goulton Street, Hull in the County of
York, Brass Turner and Finisher, 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 my invention is to provide a simple apparatus for ringing alarm
bells, actuating valves, opening ventilators or the like in cases of fire or when the
temperature of a room becomes too high.
The accompanying drawing shows a side elevation partly in section of my
improved automatic alarm apparatus.
For the purpose of my invention I employ a cylinder A of any suitable material,
this cylinder has a well or bulb B fitted to its bottom end, the said well contains
mercury which actuates a piston C and rod D in the cylinder A by means of the
temperature of the air or water or the like to which it is connected, rising or falling,
the piston being so arranged that as it is forced up by the mercury it comes in
contact with a switch E connected to an electric wire either by means of the
pivotted lever F as shown or by coming in contact with the switch itself, it may
also actuate the lever of a safety valve or the like, or by lifting a lever in like
manner may open a ventilator or the like.
Within the cylinder over the piston C I employ preferably any suitable liquid
to keep the air from getting to the mercury which stops the oxydising of the
mercury.
The switch E is connected to a bracket H which is movable in a slot J in the
frame K of the apparatus by means of a thumb screw L which allows of the said
bracket being adjusted in the slot J by which means the apparatus can be set to go
off at any desired temperature.
The top end of the cylinder A is fitted into cap 31 attached to the frame K and

page_text: between the top of the cylinder and the cap I may employ packing to keep the
cylinder firm.
The apparatus is enclosed in a suitable case.
The alarm bell or the like may be connected to an ordinary indicator so that in
whatever room the apparatus may be fixed, the indicator could be fixed in the
kitchen or chart room of a ship or other suitable place and would show which
room the apparatus was working in.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :
1. Actuating fire alarms, bells, valves, ventilators or the like by means of
mercury within a chamber attached to a cylinder and piston, substantially as shown
and described.
2. The combination of mercury within a chamber A connected to cylinder B
piston C and rod D operating upon projection, switch, lever, valve rod or ventilator
rod or the like, substantially as shown and described.
Dated thin Thin
T
1000
JOHN E. WALSH,
Savile Street, Hull, and Crossley Street, Halifax,
Patent Agent for the Applicant.
JOHN E. WALSH,
Savile Street, Hull, and Crossley Street, Halifax,
Patent Agent for the Applicant.