. Post Office Edinburgh and Leith directory. ks, Her Majestys, Office of,Writers, List of, . .Writers to the Signet, 488504513510 7(!7 707 513 , 513 , 715 . 5U, 707. 494. 490 BOYLES PATENT SELF-ACTING AIE-PUMP VENTILATORS Effectually Extract the Foul Air; have no Mechanical Movement; are Entirely Free from Down Draught; and can be Constructed to Harmonise with Every Style of Architecture. They are pronounced by the highest authorities to he the most efficient Ventilators yet invented. Soil Pipe Ventilator (specially made), 10 in. diameter, 3-in. Pipe, 35s. Boyles Patent Self-Acting Air-Pump Ve
. Post Office Edinburgh and Leith directory. ks, Her Majestys, Office of,Writers, List of, . .Writers to the Signet, 488504513510 7(!7 707 513 , 513 , 715 . 5U, 707. 494. 490 BOYLES PATENT SELF-ACTING AIE-PUMP VENTILATORS Effectually Extract the Foul Air; have no Mechanical Movement; are Entirely Free from Down Draught; and can be Constructed to Harmonise with Every Style of Architecture. They are pronounced by the highest authorities to he the most efficient Ventilators yet invented. Soil Pipe Ventilator (specially made), 10 in. diameter, 3-in. Pipe, 35s. Boyles Patent Self-Acting Air-Pump Ventilator, which does not revolve, is the best Soil Pipe Ventilator that I know of.—Eknest Turner, Esq., Prospectuses, Price Lists, etc., on application to the Patentees, ROBERT BOYLE & SON, VENTILATING AND SANITARY ENGINEERS,llO BOTHWELL STREET, GLASGOW, AND MANSION-HOUSE BUILDINGS, LONDON. Since these excellent Ventilators have been introduced, we have now got perfect methodsof Ventilation.—Dr. B. W. Eichakdson, TESTIMONIALS. From the late Sir GILBERT SCOTT, used vour Patent Self-Acting Air-Pump Ventilators with complete success. From experience of thera in my own house and other buildings—public and piivate—where they have beenajiplied under my direction, I can confidently and wiU always have greatpleasure in recommending ARTHUR GATES, Esq., , Architect to the Crown, etc. I have used your Air-Pump Ventilator with satisfactory results. Those tixed under my direction at the Libraryof tliL. Inner Temple have realised my expectations, and completely fulfil the object which I had in view. I application of them a severe , and the success which has attended it confirms the statements which you makeas to their efficacy. From Sir WILLIAM THOMSON, have seen several different forms of Mr. Bovles Air-Pump Ventilators in actual oper^ition, and have muchpleasure in testifying to their etJiciency. They t
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