The Two-Handed Hoof Cleaner: A Curved File Between Two Handles

"Referring by letter to the drawings A represents a curved back-piece that is preferably made of malleable iron and reduced at its rear end to form a shank B for a wooden handle C". "Should the file L break, or be worn out it is only necessary to detach the lip H in order to remove said file, this operation being very easily effected." "The operator uses the tool with both hands and said tool being curved all parts of the hoof between the frog and crust can be acted upon and thoroughly cleaned."

Measure the chord and depth of the curve you want on the test board and run the notebook. Cut 40 cm of 25 × 3 mm mild steel flat bar. Heat the middle with the torch and bend it over a steel tube in the vice to the notebook's radius. Bend the front 8 cm up and outward into a hand-grip. Cut a thread on the rear 5 cm with the die, push it through a drilled hardwood handle and hold it with a nut, as Faestl held his. Cut two short lips from the same bar. Bend the fixed lip and screw it near the handle; drill and tap the other for a machine screw near the grip. Slide a strip of emery cloth under both lips so it lies along the outside of the curve, and tighten the screw. Nail a horseshoe to a hardwood board, pack its inside with modelling clay and let it stiffen for a day. Hold the cleaner in both hands and work the clay out; time it and note how many times the strip has to be changed.

**Joseph W. Faestl** of Troy, Walworth County, Wisconsin, filed US 490,474 on 24 May 1888; it is dated 24 January 1893. He signed it at Eagle, Waukesha County. He preferred malleable iron for the back-piece and added a strengthening rib on its rear side. **Honest limits.** A strip of emery cloth stands in for Faestl's curved file, and mild steel for malleable iron. The notebook treats the groove as part of a circle. Sizes are examples; your clearing time is the result.