A Coil Spring Used for Splicing Sash Cords or Small Round Belts
When painting wireless instruments use black asphaltum, as it has high insulating qualities.
The Main Ambition of a Boy Mechanic is to Own a Lathe
Amateur Mechanic's Combination Lathe
By Joe V. Romig
The thing most desired by a young mechanic is a lathe, but the cost of these machines is usually too high to be considered by the average boy, and consequently he is hampered in executing more difficult work. The combination lathe shown in the illustration comes as near filling the wants of most boy mechanics as could be wished, the attachments making it more than a lathe so that various kinds of work other than turning may be accomplished. The materials necessary are few, and, outside of a few parts, it can be constructed by the average boy at home with ordinary tools.
The material used for the construction of the frame consists of either well seasoned oak or maple, 2-3/4 in. wide and 1-1/2 in. thick. These timbers can be purchased surfaced on all sides, and they must be straight and true to size. The lengths to cut the pieces are given on the general drawing. The end standard at the headstock is cut to the full length so that the upper end is used as a bearing for the headstock spindle. A vise jaw, about 2-1/2 ft. long and of the same kind and dimension material as the frame, is attached with screws made of bolts on the standard, at the tailstock end of the lathe. The feet are made of two boards for each standard, and are of the same material as the frame and 7/8 in. thick. After cutting the pieces to the right length, making sure that the ends are square, and boring the holes to receive the bolts snugly, they are put together, the horizontal pieces for the ways and feet at perfect right angles to the uprights. This will insure the parts running freely in the finished machine. All bolts should be supplied with a washer under both head and nut, and the nuts drawn up tightly.
The headstock extends 7 in. above the upper surface of the ways, thus making a swing of 12 in. One of the standards of the headstock is the extension of the lathe standard, as previously mentioned; the other standard being cut 9-3/4 in. long and attached with bolts between the ways in the same manner as the lathe standards are fastened. A block, 3 in. long, is fastened between these standards to aid in holding them rigid. The bearings for the spindle, which is a piece of steel, 3/4 in. in diameter and about 9 in. long, are made in the upper ends of the standards in the following manner: