Comb-Cylinder Egg Beater: Bars Turn Between Fixed Arms

"The beater consists of a frame composed of a number of parallel bars, p, placed at uniform distances apart, so that each bar p will come between a pair of arms, n n', when in place in the cylinder a." "My improved egg-beater is designed to beat up the white of eggs or eggs mixed with sugar, and by the use of it I am enabled to accomplish the result more effectually and in a much shorter space of time than by hand or by the use of any contrivances for a similar purpose with which I am acquainted."

Print the bar frame and the arm comb on its shaft. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls.

Cut 160 mm of 100 mm PVC pipe. Close one end with a plywood disk and silicone; make a plywood cap for the other end that twists onto two screws. Saw a 30 mm filling hole on top and fit a funnel over it.

Fix the arm comb's shaft through the cap so it cannot turn. Slide the bar frame onto it so its bars fall between the arms, and couple its end ring to a 5 mm crank shaft through the closed end, with a 12-tooth pinion and a 36-tooth wheel and crank on a plywood stand.

US 40,188 drawing sheet, public domain (expired patent).

Fill through the funnel with two egg whites and a spoon of sugar. Crank about once a second; time to stiff peaks, then twist the cap off and pour.

**Peter Schildecker** of Pittsburgh received US 40,188, dated 6 October 1863. His cylinder is tin on a light framework; the cap's rim has two L-shaped slots over pins on the cylinder; a pin through the cap holds the arm shaft still; the bar frame's end bar has a square box flange that takes the crank shaft's square end; a pinion on the crank shaft is driven by a larger cog wheel with a crank; the funnel slide opens or closes the filling hole. **Honest limits.** FDM prints hold food in their layer lines, so wash well and replace when worn. PVC pipe and plywood stand in for tin, and printed parts for his bars and arms. Your times are the result.