![PM Research Solar Engine #12, 1895 Rider-Ericsson Hot Air Pumping Engine - SOLAR-12 - Penn Tool Co., Inc PM Research Solar Engine #12, 1895 Rider-Ericsson Hot Air Pumping Engine - SOLAR-12 - Penn Tool Co., Inc](https://cdn11.bigcommerce.com/s-4s9liwcv/images/stencil/1280x1280/products/356956/413302/solar_12__69023.1586441573.png?c=2)
PM Research Solar Engine #12, 1895 Rider-Ericsson Hot Air Pumping Engine - SOLAR-12 - Penn Tool Co., Inc
![File:Improved Ericsson Hot-Air Pumping Enginer, 8 inch, Rider Ericsson Engine Co. - New England Wireless & Steam Museum - East Greenwich, RI - DSC06743.jpg - Wikimedia Commons File:Improved Ericsson Hot-Air Pumping Enginer, 8 inch, Rider Ericsson Engine Co. - New England Wireless & Steam Museum - East Greenwich, RI - DSC06743.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/4/40/Improved_Ericsson_Hot-Air_Pumping_Enginer%2C_8_inch%2C_Rider_Ericsson_Engine_Co._-_New_England_Wireless_%26_Steam_Museum_-_East_Greenwich%2C_RI_-_DSC06743.jpg/1365px-Improved_Ericsson_Hot-Air_Pumping_Enginer%2C_8_inch%2C_Rider_Ericsson_Engine_Co._-_New_England_Wireless_%26_Steam_Museum_-_East_Greenwich%2C_RI_-_DSC06743.jpg)
File:Improved Ericsson Hot-Air Pumping Enginer, 8 inch, Rider Ericsson Engine Co. - New England Wireless & Steam Museum - East Greenwich, RI - DSC06743.jpg - Wikimedia Commons
![File:De-Lamater Ericsson hot-air engine, section (New Catechism of the Steam Engine, 1904).jpg - Wikimedia Commons File:De-Lamater Ericsson hot-air engine, section (New Catechism of the Steam Engine, 1904).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/1/11/De-Lamater_Ericsson_hot-air_engine%2C_section_%28New_Catechism_of_the_Steam_Engine%2C_1904%29.jpg)