Pair of straight cut involute bevel gears in mesh.
circa 1883
circa 1883
1890
circa 1883
1888
circa 1883
1890
1857
1913
circa 1890
1888
circa 1890
1888
1857
1913
circa 1948
1913
1868
circa 1889
circa 1902
circa 1883
1868
1883
1868
1868
1868
circa 1883
1888
circa 1884
circa 1954
1876
Unknown
1908