Figs. [6] and [7] show the curves or necessary projection, forward and upward, of the saddle in the header act of a No. 2 machine upon four- and eight-inch obstructions respectively.
The feature of a non-backward revolution of the drive-wheel through the fork is a natural consequence in some lever and clutch machines. This element of anti-header has been the subject of an invention in the way of an attachment to the Ordinary, contrived with a view to reaching the same result, but it cannot be said to be a successful venture in the market, the probable reasons being, first, that it interferes, to a slight extent, in managing the dismounted wheel, the operator being unable to run it backward, as is sometimes desirable; second, that the anti-header element has not been really understood or appreciated among the fraternity, as it does not appeal to the judgment of the casual observer that any such element results from the fact “that a wheel won’t run back.” In the lever and clutch machine a third objection is raised,—the rider cannot back-pedal, but must depend entirely on the brake in descending hills.
Header Rational Ordinary.
Header Kangaroo.
Kangaroo anti-header, four-inch obstruction.
Header Star rear-driver lever machine.