Connections.
Various methods exist for connecting the rubber to the main members, a typical arrangement with the Vee undercarriage
Fig. 93.—Arrangement of suspension on steel tube undercarriage.
of steel being shown by [Fig. 93], and a variation of this, when wood is the material, is indicated by [Fig. 94]. The web plate in [Fig. 93] forms a means for guiding the axle in its upward travel, and is another version of the one-time popular
Fig. 94.—Arrangement of suspension on wood undercarriage.
radius rod. It is not considered necessary, in many instances, to fit either web plate or radius rod, the movement of the axle
Fig. 95.—Farman type axle suspension.
being of no great extent. Another system is shown by [Fig. 95], this being the method of suspension adopted for the Farman
Fig. 96.—Rubber cord suspension.
machines. In this case rubber bands are attached to the main skids, the short axle passing between the two. A similar arrangement in general outline is shown by [Fig. 96], although in this case the rubber takes the form of cord.
Fig. 97.—Bridge type suspension.
A method greatly in vogue in America is that indicated by [Fig. 97], known as the bridge type, and a characteristic Wright detail, the rings being approximately two inches wide by two inches long. The fact that very few examples of this system exist in this country may be ascribed to the inferiority of rubber bands compared with the rubber cable.