Autograph letter signed by Captain Alfred Mordecai, dated February 18, 1846, from the Washington Arsenal, to William Kemble, President of the West Point Foundry Association. The letter discusses the successful operation of a steam engine furnished by the Foundry Association and details the final payment, including deductions for completing the engine. A second page itemizes the costs of materials and labor involved in completing the engine.
Subject: Steam engines
No additional authority information available for Steam engines.
This pamphlet, dated April 24, 1860, describes Solomon N. Carvalho's patented invention, the oxy-hydrogen retort, designed to economize fuel and increase the power of steam engines. The pamphlet includes an engraved illustration of the invention. This copy is inscribed by Daniel Wolff, agent, and bears the number 47997. It is noted as the only known copy.
Purchase Order from Neafie & Levy, Penn Steam Boiler Works, February 2, 1865Purchase order from the firm of Neafie & Levy, Penn Steam Boiler Works, dated February 2, 1865. The order is signed by C.(?) Levy. This manuscript document is part of a larger collection of financial records.
This issue of *Scientific American*, dated February 10, 1866, features a full-page article with illustrations on Solomon Nunes Carvalho's apparatus for super-heating steam. The article details the design and functionality of Carvalho's invention, likely providing technical specifications and diagrams. This periodical offers insight into 19th-century engineering and the contributions of a prominent Jewish inventor.