Improvements in and connected with Ventilators.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in and connected with Ventilators.
WILLIAM JOHN TICKELPENNY, of 5, Rock Crescent, The Parade, Monmouth,
Clerk of Works, and AUDLEY PERKINS, of 62, Lower Redland Road, Bristol, Con-
tractor's Assistant, do hereby declare the nature of this invention to be as
follows:
—
The balancing of a blade of aluminium to form a flap valve and is constructed
with one or more valves and of any size, the aluminium is to be turned over a brass
pivot rod, being first perforated for balance, rod, and welted.
The pivot rod is pivoted in a frame of cast or wrot iron or other metal. Attached
to the pivot rod at the centre or otherwise as found necessary is the
balancing rod projecting from the pivot rod and blade at right angles threaded
for and provided with balance weight of metal movable for adjustment of valve.
The dotted lines shown at J on drawing herewith shows the valve partially open
for exit of foul air, in the event of a down draught the balance weight is overcome
and the valve closed as at A on to a strip of rubber, woollen or other suitable material
for the object of silencing the closing. This ventilator is applicable also inverted
for preventing up draught the balance weight being adjusted as necessary.
On the drawing herewith in Fig. 1 AAA are aluminium blades DDD brass
pivot rods to which are connected the balancing rods C C C carrying the balance
weight B B B. To prevent noise strips of woollen or other material E E E are
attached to flap. The valves are hung in metal frames F F which are secured to
wood linings G G finished by wood moulding H.
Fig. 2 gives a general arrangement of the ventilator in a flue marked L whilst K
shows elevation half covered by grating and half open.
Dated this Nineteenth day of July 1897.
Improvements in and connected with ventilators.
I, WILLIAM JOHN TICKELPENNY, of 5, Rock Crescent, The Parade, Monmouth,
Clerk of Works, and I, AUDLEY PERKINS, of 62, Lower Redland Road, Bristol, Con-
tractor's Assistant, 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 balancing of a blade of aluminium to form a flap valve, and is constructed

page_text: with one or more valves and of any size, the aluminium is to be turned over a brass
pivot rod, being first perforated for balance rod and welted.
The pivot rod is pivotted in a frame of cast or wrot iron or other metal, attached
to the pivot rod at the centre or otherwise as found necessary is the balancing rod
projecting from the pivot rod and blade at right angles, threaded for and provided
with balance weight of metal movable for adjustment of valve, the dotted line
shown at J on drawing left with Provisional Specification shows the valve partially
open for exit of foul air, in the event of a down draught the balance weight is over-
come and the valve closed as at A on to a strip of rubber woollen or other suitable
material for the object of silencing the closing.
This ventilator is applied also inverted for preventing up draughts, the balance
weight being adjusted as necessary.
On the drawing left with Provisional Specification in Fig. I. A A A are alum-
inium blades, DDD brass pivot rods to which are connected the balancing
rods CCC carrying the balance weights B B B. To prevent noise strips of
woollen or other material EEE are attached to flaps. The valves are hung in
metal frames FF which are secured to wood linings GG finished by wood mould-
ing H.
Fig. 2 gives a general arrangement of the ventilator in a flue marked L whilst K
shows elevation half covered by grating and half open.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:
1. The entire prevention of back draughts through air shafts or vent flues.
2. The use of aluminium blades for lightness, strength, flexibility, durability,
and freeness from corrosion.
3. Adjustable balancing to work automatically and noiseless.
WILLIAM JOHN TICKELPENNY.
AUDLEY PERKINS.