72,063.--CONVERTIBLE SHOT GUN AND RIFLE.--Samuel McCulloch, Yellow Springs, Ohio.
I claim, 1st, The removable barrel, C, constructed with external collars, c, and secured within a shot gun barrel, A, by a screw, D, substantially as and for the purposes set forth.
2d, Also the plug, F, for the purposes set forth.
72,064.--DERRICK.--D. J. McDonald, Gold Hill, Nevada.
I claim, 1st, The derrick standard, L, and frame, K, fitted in the derrick frame, J, and arranged as shown, for the ready adjustment of the standard, L.
2d, The fitting of the derrick frame, J, on the wagon frame, as shown, to wit by means of the circular plate, D, frame, F, and circular plate, G, with the wheel, E, and pinion, Y, to admit of the ready turning of the derrick, as set forth.
3d, The supports, D, provided with screws, a, and attached to the frame, B as shown, in connection with the levels, b, in platform, C, for the purpose of levelling the device, substantially as described.
4th, The angular platform, C, applied to the wagon, A, when used in combination with a revolving derrick frame, J, substantially as and for the purpose specified.
72,065.--AUGERS.--John A. McGee (assignor to Theodore Mace), New York city.
I claim the boring instrument formed with a cutting edge extending outwardly from the base of the tapering screw, and curved backwards and downwards until it intersects the periphery of the tool, as and for the purposes set forth.