Mihan’s Tower Ventilator, 
PATENTED SEPT. 4th, 1877. 
MAY 7th, 1878. 
A Medal was awarded to this Ventilator at the late 
Mechanics’ Fair. It can he made to conform to the Archi- 
tecture of any Building. It is powerful in action, neat 
in Appearance, and is a Protection against Storms. 
Gan be made of Weed or Galvanized Iron, 
Special Teems to Architects. 
[OVKII.I  
VHTILATIHG ENGINEER, 
No. 1 PEMBERTON SQUARE. ROOM 9. BOSTON. 
FIRST SOIICITSD. 
Personal Supervision of all work enables me to "Warrant Satisfaction. 
Defective Ventilation Adjusted. 
Instructions given in the Management of Hot fir Furnaces. 
Defective Draughts and Smoky Chimneys Cured. Examinations made and Advice 
given on Reasonable Terms. 
PATENT RIGHTSFOR SALE. 
SEND FQE CATALOGUE OF VENTILATING APPLIANCES, 
[OVEB.]