The Scientific American Boy eBook

This eBook from the Gutenberg Project consists of approximately 211 pages of information about The Scientific American Boy.

The Scientific American Boy eBook

This eBook from the Gutenberg Project consists of approximately 211 pages of information about The Scientific American Boy.

We had planned to make two more devices for our winter sports—­a toboggan and a peculiar looking contrivance called a “rennwolf,” a picture of which Dutchy happened to unearth in one of his father’s books.  Unfortunately Bill and I had to return to school before either of these was completed.  However, the work was entrusted to Reddy, who was quite handy with tools, and Jack, who was made secretary pro tempore, took notes on the work.

The Toboggan.

The toboggan was made of light flexible hickory boards, 1/4 of an inch thick, 6 inches wide and 8-1/2 feet long.  Three of these boards were used, and they were fastened together with cross sticks or battens, about 3 inches wide and 1/2 an inch thick.  There were six of these battens spaced about 15 inches apart, and secured to the floor boards with flathead screws introduced from the under side and countersunk so that the heads would not project below the bottom of the toboggan.  At the forward end we screwed on a head piece of oak, 3/4 of an inch thick, 1-1/2 inches wide and 20 inches long.  The head piece was fastened to the under side of the boards, so that when they were curved up into a hood it would lie on top.  The ends of the head piece, which projected 1 inch each side of the boards, were notched to hold the rope, which was tied fast after the boards had been steamed.  The boards were steamed by wrapping them in burlap for a distance of 2 feet from the forward end, and pouring boiling water over them, as was done with the snow shoes (page 39).  Before bending the boards we had fixed screw eyes in the ends of each batten, except the forward one; a rope had been strung through these screw eyes and the ends were now tied to the head piece and drawn tight so as to bend the boards into a graceful curve.  In this way the ropes were of service not only for curving the front end into a hood, but also for side rails, to hold on by when shooting swiftly around curves.

[Illustration:  Fig. 177.  Tying Down the Head Piece of the Toboggan.]

[Illustration:  Fig. 178.  The Toboggan.]

The Rennwolf.

[Illustration:  Fig. 179.  Dimensions of Rennwolf.]

The runners of the rennwolf were made of hickory strips, 1 inch thick, 2 inches wide and 8 feet long.  At their forward ends these strips were tapered down to a thickness of 1/2 an inch and curved upward.  About 30 inches from the rear end of each runner an upright post was nailed.  The post was 3 feet long and was braced by a diagonal brace 24 inches long, as shown in Fig. 179.  A tie bar was nailed to the post about 6 or 8 inches from the bottom and connected with the forward curved end of the runner.

The two runners were now placed parallel to each other about 18 inches apart, and connected by four cross bars, one at the forward end, and three on the upright posts, in about the positions illustrated.  The upper cross bar was extended 6 inches beyond the posts at each side, and served as a handle for guiding the queer craft.  An 18-inch square board was used for the seat of the rennwolf.  It rested on the second cross-bar of the post about 12 inches from the runners, and the forward end was supported on legs nailed to the tie bars.  On each runner back of the posts a loop of leather was nailed, large enough to receive the toe of one shoe.

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The Scientific American Boy from Project Gutenberg. Public domain.