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No. 1 Design, Plain,
(Latest Improvement patented 1882),
Effectually extract the foul air, have no mechanical motion,
are entirely free from down-draught, and can be constructed to
harmonize with every style of architecture.
Efficient Ventilation Guaranteed.
These Ventilators, which are pronounced by the most eminent,
scientific, and practical men in the kingdom to be the most
efficient method of Ventilation yet brought out, were awarded : —
£50 Prize (only Prize offered) International Ventilation Competition,
London, 1882. Gold Medal (Highest Prize) International Exhibition,
London, 1882. Gold Medal (only Prize offered) Open Ventilation Com-
petition, Birkenhead, 1884. Highest and Only Prize awarded to Exhaust
Ventilators, Hygienic Exhibition, London, 1883. First Prize (only one
awarded to Eoof Ventilators) International, Medical, and Sanitary Exhi-
bition, London, 1881. Highest and Only Prize awarded to Ventilators,
International Exhibition, London, 1884.
ALFRED WATT7EH0USE, Esq., E.A., Ai-chitect— " I am glad to hear good reports of your Cowls fixed
t the Duke of Westminster's house."
ARTHUR W. BLOMFIELD, Esq., Architect—" I have used the Air-Pump Ventilator of Messrs. Robert
|Boyle & Son with satisfactory results. I believe the system to be a sound and good one, and capable of
varied application with success."
Dr. B. W. RICHARDSON, F.R.S. — "Since these excellent Ventilators have been introduced we have
now got perfect methods of Ventilation."
The late Sir GILBERT SCOTT, Architect.—" I have used your Patent Self-Acting Air-Pump Ven-
tilators with complete success. From experience of them in my own house and other buildings — public
and private — where they have been applied under my direction, I can confidently and will always have great
pleasure in recommending them."
r ARTHUR GATES, Esq., F.R.LB.A., Architect to the Crown, &c.— "I have used your Air-
Pump Ventilator with satisfactory result. Those fixed under my direction at the Library of the Inner
Temple have realized my expectations, and completely fulfil the object which I had in view. I consider
^his application of them a severe test, and the success which has attended it confirms the statement which
you make as to their efficacy."
Sir WILLIAM THOMSON, F.R.S., Glasgow University.— " I have seen several diflferent forma of
Mr. Boyle's Air-Pump Ventilator in actual operation, and have much pleasure in testifying to their
jefficiency. They thoroughly realize the favourable anticipations which I formed from experiments on models
shown to me by Mr. Boyle. Having one fitted up in my yacht, I find it has caused a very decided improve-
'ment in the draught."
(Latest Improvement, patented 1882.)
Made of strong Galvanized Iron and painted with Enamel Paint —
6 inch diameter, 2 inch Pipe, 12s. | 8 inch diameter, 3 inch Pipe, 17s
10 inch diameter, 3 J to 4 inch Pipe, 22s.
'' I have often made use of the Air-Pump Ventilator for soil-pipes, &c., and consider it most admirable.
It is decidedly the most efficient fixed foul-air withdrawing medium that I ever met with. " — W. Eassie,
Esq., C.E. '
"Boyle's Patent Self-acting Air-Pump Ventilator, which does not revolve, is the best soil-pipe ventilator
that I know of."— Ernest Turner, Esq., F.R.LB.A, &c.
(ROBERT BOYXiE & SON (Limited),
Ventilating, Sanitary, and Heating Engineers,
*#*_ CAUTION. — Beware of spurious and worthless imitations of the Air-Pump Ventilator, which
unprincipled persons are attempting to palm ofi' upon the public.

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