The supports for the walking-beam are two in number, made of quarter-inch wood, cut in the shape of d, e, f, Fig. 6; the base line, d f, is one and one-half inches, and the height of the support just two inches.
The wheels are made from three-eighths-of-an-inch wood and are circular in form, with a diameter of three and three-quarter inches.
At this stage of the work it would be well to bore in each of these two holes to allow the passage of a good-sized wire; one hole through the center, and the other a quarter of an inch one side of it. This is so arranged that the wire can be brought through the center of one wheel and allowed to project a few inches. Then bend the projecting end twice, in such a manner that it may enter the second hole in the wheel when that is pushed back upon it. This arrangement is seen at B, Fig. 3, in which the dotted lines show the final position of the wheel.
The pieces for the paddle-boxes, four in number, are semicircular, with a base line or diameter of four and one-quarter inches. The form is seen in Fig. 8, which also is intended to assist in the decoration.
Fig. 7 represents a front view of the walking-beam and its supports; the line a b is a short piece of strong wire, which passes through the hole made in the center of the walking-beam, and rests in two holes made in the sides of the supports near the top, and extending nearly, but not quite through to the outer side. This is plainly seen in the figure, the black line indicating the length of these holes. C in the same figure is a small piece cut from a quarter-inch wood and intended to hold the supports in place, and to keep them a sufficient distance apart to allow free motion of the walking-beam.
The forward and aft flag-staffs are of large wire, and the two masts are of tough wood nearly as large round as a lead-pencil.
Having all the parts now cut out in the proper form and size, take each piece and bore holes for the screws which hold them together. The position of these is indicated in each figure by the heads of the screws placed at precisely the best points; these screws should be of different lengths, as those passing through No. 4 require a length of one and one-half to one and three-quarter inches, while those for No. 2 need not be more than an inch in length. In No. 3 make four small holes, indicated by a in Fig. 3, for slender screws which are to hold the outer paddle-box pieces in place. In Fig. 3, the lines b c, b c, indicate grooves, cut down in the sides five-eighths of an inch deep, and reaching across in a straight line from the middle of one slit to the middle of the other; these should be large enough to admit an easy play of the wire which is to form the axle of the wheels. Holes should also be made at a and b, in Fig. 5, for the wire forming the flag-staffs to pass up through, and for the screws at c and g, which are to hold the pilot-house and smoke-stack in place.
Having smoothed off all these pieces and sand-papered those parts needing it, we now proceed to the painting, as it is much more convenient to paint each piece separately, and then put them together, than to leave it till the last, as is generally the custom.
No. 1 simply needs a thick coat of white paint.