The turner's companion /

by Anonymous

Plate 1.

The left hand puppets, C D, or, as they are sometimes called, the headstock, should be of iron, and cast in one piece. The under part fits tightly into the open space in the bed of the lathe, and is fixed there with screws; while the two cheeks of the puppets rest on the bed itself. The mandrel E, to prevent, as much as you can, any vibration, should be as long as possible; it runs in a metal collar, through the puppets C D, and is of steel, turned perfectly cylindrical; it is kept constantly oiled, by pouring a few drops of oil upon it through holes made in each of the puppets. The screw E, at the end, is called the nose of the spindle, and upon it the chucks intended to receive the work are screwed. The back puppet, G, is used to support long pieces of wood; it is moved backwards and forwards on the bed of the lathe, so as to suit the work upon which you are occupied, by loosening the screw L; within the upper part of G is a steel spindle, J, which screws in and out of the headstock, by turning the screw K. Care must be taken that the point of this spindle be exactly on a line with the nose of the mandrel, E. The point, J, takes out, and another nose, L, can be inserted in its place, to receive the pointed end of any small work, should it be more convenient.

Upon the spindle is a brass or a mahogany wheel, F; it has three grooves in it, and the great wheel, K, has three similar grooves turned in a V, so as more effectually to take hold of the band which moves them round. The three different grooves in this wheel, and in the small one, give different velocities to them. The band which turns them is made of strong catgut, and passes under the lower and over the upper wheel, working in the corresponding grooves of each; it is joined with a hook and eye of iron, that have a screw in them. Slightly taper off with a sharp penknife a little of each end of the catgut, so that it will just enter the hook and eye; then hold the band firmly in a vice with your left hand, and with your right take up the hook or eye in a pair of pincers, and screw it upon the catgut till quite firm. This is a far better means of joining the band than any other that can be employed, as the hooks and eyes seldom give way, and obviate the necessity of knots or joins, which are always clumsy and inconvenient. Cord, too, gives way with the variations of the atmosphere, so that it constantly requires shortening in dry, and lengthening in rainy weather; catgut is so slightly influenced by these changes, that its use is far preferable. The treadle, N, when moved up and down with the foot, gives motion to the two wheels, and thus the spindle, with the wood to be worked screwed upon it, is turned round with a quick or slow movement. The axle of the great wheel, S, works in two screws, Q; the crank, M, is connected at one end with the axle, S, and at the other hooks into the treadle frame, N. Plenty of oil should be given to the axle at Q to enable it to work easily. The rest which supports the tools is represented at Fig. 1, and M; it is made of iron, and consists of three parts; the lower has a forked foot, T, which rests upon the bed of the lathe, and enables it to be drawn backwards and forwards, so as to accommodate the workman; this foot is held in its place by a bolt, O, which, passing through the bed of the lathe, is sufficiently broad to rest upon each side of the foot, T, and is tightened by a screw that passes underneath the lathe, P, through which it passes; the upper part of the rest is a cross piece of iron with a cylindrical stem, that fits into the socket, U, and is moved up and down, to the right or the left, by loosening the screw, H. The workman should have rests of different sizes, to suit various kinds of work, but they must all fit into the same socket.

Having now given a clear description of a lathe, I need only add, that it should be placed opposite a window, so as to have the benefit of as much light as possible; a skylight above the head is also a great advantage. As it is indispensably necessary for the learner to exercise himself in plain turning, that is, in the formation of different articles, so as to be able to turn them perfectly round, oval, or hollow, as required, before attempting more difficult and complicated work, we will now give a list of the most useful tools for this purpose.

For the wood, the gouge, Fig. 1, [plate 1], is first to be employed, to reduce the unevenness of your work; its edge is rounded. To use it, place the rest on a level with the axis of the work, and hold the handle of the tool downwards so that its cutting edge is above the axis. These tools are useful for making concave mouldings. In using them, do not push them roughly against the wood till it becomes tolerably even, or you will spoil their edge and chip the work; and hold your hands very steady.

The chisel, Fig. 2, is next used, to give a smooth and polished appearance to the wood. Its cutting edge is oblique. Elevate the rest considerably above the axis of the work, so that, though held with a less inclination than the gouge, the edge of the chisel operates on a higher part of the surface. Use this tool at first with great caution, for it is much more difficult to manage than the gouge; with an inexperienced hand, the point is apt to dig into the wood, quite spoiling its surface, or else, by pressing it too firmly upon the work, it cuts great pieces in an uneven manner. When skillfully used, it should feel almost to work by itself, merely running steadily along the wood, shaving off all its inaccuracies, and making it look quite bright, smooth, and polished. All soft woods are entirely turned with the gouge and chisel, of both of which you must have several sizes.

Fig. 3 is called a right-side tool, and has two cutting edges, a side edge and an end edge: so as at the same time to cut the bottom and side of a cavity. The left-side tool cuts with the opposite side. In using them, hold the bevel which forms the edge downwards.

Fig. 4 is a point tool, useful for making small mouldings, and much employed in finishing the shoulders and flat ends of work.

Figs. 5, 6, 7, 8, 9, are inside tools, used to turn out hollows; also to make cups, and various other articles.