 | William Shaffer Hall - 1902 - 160 стор.
...curve. Similarly, any number of points of the required curve ae are constructed. 32. The ordinary helix is a curve generated by a point moving on the surface...combined with uniform motion parallel to it. PROB. 1 08. To construct the projections of a helix and a tangent to the curve at any point, and also to... | |
 | James Ambrose Moyer - 1905 - 248 стор.
...prism is increased indefinitely, the broken line on its surface becomes a curve called a helix. It is a curve generated by a point moving on the surface...angle. The moving point has uniform motion around, and at the same time parallel, to the axis of the cylinder. The method for constructing a helix is... | |
 | James David Phillips, Adam Vause Millar - 1908 - 116 стор.
...without the limits of the drawing. CURVES OF DOUBLE CURVATURE. 85. An ordinary heiix is the path of a point moving on the surface of a cylinder of revolution so as to intersect its elements at a constant acute angle. The axis of the cylinder is the axis of the helix.... | |
 | James David Phillips, Adam Vause Millar - 1909 - 122 стор.
...without the limits of the drawing. CURVES OF DOUBLE CURVATURE 76. An ordinary helix is the path of a point moving on the surface of a cylinder of revolution so as to intersect its elements at a constant acute angle. The axis of the cylinder is the axis of the helix.... | |
 | Adam Vause Millar, Edward Silver Maclin - 1913 - 152 стор.
...without the limits of the drawing. CURVES OF DOUBLE CURVATURE 93. An ordinary helix is the path, of a point moving on the surface of a cylinder of revolution so as to intersect its elements at a constant acute angle. The axis of the cylinder is the axis of the helix.... | |
 | James Ambrose Moyer - 1925 - 232 стор.
...prism is increased indefinitely, the broken line on its surface becomes a curve called a helix. It is a curve generated by a point moving on the surface...angle. The moving point has uniform motion around, and at the same time parallel, to the axis of the cylinder. The method of constructing a helix is shown... | |
 | Otto Kaiser - 1998 - 742 стор.
...such fasteners, study of the generation and true projection of helix is required. 14.1 HELIX The helix is a curve generated by a point moving on the surface of a cylinder or a cone in a circumferential direction, at a constant angular speed and with a simultaneous uniform... | |
 | A. M. Chandra, Satish Chandra - 2003 - 410 стор.
...such fasteners, study of the generation and true projection of helix is required. 14.1 HELIX The helix is a curve generated by a point moving on the surface of a cylinder or a cone in a circumferential direction, at a constant angular speed and with a simultaneous uniform... | |
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The ordinary helix is a curve generated by a point moving on the surface of a cylinder of revolution, so as to cut all the elements at a constant angle. 