|E. L. Miller
Patented Jun.19, 1834
Car Propeller . Corn-Planter . Steam Heater
Miller’s earliest invention was recorded but lost in a fire, but it is referred to in a list from the Patent Office as being dated 1830, according to John H. White of the Smithsonian Institution.
Ezra L. Miller of Charleston, South Carolina
TO ALL TO WHOM THESE PRESENTS SHALL COME. Be it known that I Ezra L. Miller of the City and District of Charleston, State of South Carolina have invented a new and useful mode of increasing the adhesion of the driving wheels of the Locomotive Steam Engine on Rail Roads by using the tender or car next the Engine for purpose of adding weight to the driving wheels of the Engine at such time only as a greater adhesion is required than the weight would give which it would be practicable to carry as a fixed weight on those wheels, without injury to the road. At the points of starting and on the ascents where increased adhesion is required. I attach part of the weight of the Car or tender which is next the engine to the end of the frame of the Engine next the driving wheels which may be done by means of a lever, a screw, wedge or pulley, and detach it again when the increased adhesion is no longer necessary. The mode which I have used and found to answer perfectly in practice is simply to connect the car or tender next the Engine, to the Engine by a strong iron bar or lever one end of which is bolted to the under side of a cross timber in the frame of the car or tender. A little back of the center and which lever extends under the frame of the tender to the end of of the frame of the Engine and into the iron which together with the driving bolt secures it to the Engine. Traversely to this lever I attach to the end of the tender next the Engine two levers so that their fulcrums shall be six or eight inches on each side or the main lever or drawing bar. These levers have a jaw or pivot five or six inches in length directly over the main lever and shall be 4 1/2 feet in length. When the increased adhesion is wanted , the Engineer has only to place his foot upon the ends of the levers and press them in to a hook or groove for that purpose on the corner post of the tender and a portion of the weight of the car or tender next the engine is thus thrown upon the driving wheels of the engine and when the increased adhesion is no longer wanted his weight is detached by simply loosing the ends of the levers. What I claim as my invention is the making use of the car or tender next the Engine for the purpose of increasing the adhesion of the driving wheels of the Locomotive Steam Engine at these points when more adhesion is required than the weight would give which is eligible to carry as a fixed weight on these wheels whether the same be effected in the mode above described or any other which attains the same end.
Drawing (585 Words)