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Model of Bodmer's carding engine.

Model of Bodmer's carding engine.

1820-1824

Model of a drawing and lapping machine (scale 1:5) patented by John George Bodmer

Model of a drawing and lapping machine (scale 1:5) patented by John George Bodmer

1824

Model of a Drawing Machine

Model of a Drawing Machine

1824-1833

4 convolute screwing taps size 1 1/2" 6 t.p.i. for cutting screw threads in four progressive stages.

Convolute screwing taps

circa 1840

4 convolute screwing taps size t.p.i. for cutting screw threads in four progressive stages.

Convolute screwing taps

circa 1840

Model of reversing gearing and friction clutches for winding from mines patented by J.G. Bodmer in 1843

Model of Reversing Gearing and Friction Clutches

circa 1843

Four toothed-wheel circular steel cutters, or milling tools, patented by John George Bodmer (Patent No. 8070) in 1839.

Four toothed-wheel circular cutters

1839

Universal joint for communicating rotary motion between shafts lying in different planes ( J.G. Bodmer)

Universal Joint for Communicating Rotary Motion

1841