SPINNING-MACHINE.
SOUNDING-BOARD AND IRON-FRAME ROOM.
The sounding-board is what, in a great measure, gives tone, and the different qualities of tone, to the piano. Messrs. Boardman & Gray use the beautiful white, clear spruce lumber found in the interior counties of New York, which they consider in every way as good as the celebrated "Swiss Fir." It is sawed out in a peculiar manner, expressly for them, for this use, selected with the greatest possible care, and so thoroughly seasoned that there is no possibility of its warping or cracking after being placed in one of their finished instruments. The making of the sounding-board the requisite thinness (some parts require to be much thinner than others), its peculiar bracing, &c., are all matters that require great practical experience, together with numberless experiments, by which alone the perfection found in the piano-fortes of Messrs. Boardman & Gray, their full, rich tone giving the most positive evidence of superiority, can be attained.
We will watch the processes of the workmen in this department. One is at work putting in the "long-block" of hard maple, seasoned and prepared until it seems almost as hard as iron, which is requisite, as the "tuning-pins" pass through the plate into it, and are thus firmly held. Another workman is making a sounding-board, another fitting one in its place, &c. &c. All the blocking being in the case, the sounding-board is fitted and fastened in its place, so as to have the greatest possible vibrating power, &c.; and then the iron frame must be fitted over all and cemented and fastened down. The frame is finished, with its hundreds of holes and pins, in the drillers'-room, and the workman here has only to fit it to its place and secure it there; and then the skeleton case is ready to receive its strings and begins to look like what may make a piano-forte.
Spinning the bass strings, and stringing the case, come next in order. In the foreground of the last plate, we have a curious-looking machine, and a workman busy with it winding the bass strings, a curiosity to all who witness his operations. To get the requisite flexibility and vibration to strings of the size and weight wanted in the bass notes, tempered steel wire is used for the strings, and on this is wound soft annealed iron wire, plated with silver; each string being of a different size, of course various sizes of body and covering wire are used in their manufacture. The string to be covered is placed in the machine, which turns it very rapidly, while the workman holds the covering wire firmly and truly, and it is wound round and covers the centre wire. This work requires peculiar care and attention, and, like all the other different branches in Messrs. Boardman & Gray's factory, the workmen here attend to but one thing; they do nothing else but spin these bass strings, and string pianos year in and year out.
The case, while in this department, receives all its strings, which are of the finest tempered steel wire, finished and polished in the most beautiful manner. But a few years since, the making of steel music wire was a thing unknown in the United States; in fact, there were but two factories of note in the world which produced it; but now, as with other things, the Americans are ahead, and the "steel music wire" made by Messrs. Washburn & Co., of Worcester, Mass. is far superior in quality and finish to the foreign wire. The peculiar temper of the wire has a great influence on the piano's keeping in tune, strings breaking, &c., and, as the quality cannot always be ascertained but by actual experiment, much is condemned after trial, and the perfect only used.
KEY-MAKERS' DEPARTMENT.
The preparation of what is termed the "keyboard" is one of peculiar nicety, and the selection of the lumber and its preparation require great experience and minute attention, so that the keys will not spring or warp, and thus either not work or throw the hammers out of place, &c. The frame on which the keys rest is usually made of the best of old dry cherry, closely framed together to the form required for the keys and action. The wood of the keys is usually of soft straight-grained white pine, or prepared bass-wood. Both kinds have to go through many ordeals of seasoning, &c., ere they are admitted into one of the fine-working, finished instruments of Messrs. Boardman & Gray. The keys are made as follows: On a piece of lumber the keys are marked out, and the cross-banding and slipping done to secure the ivory; the ivory is applied and secured, and then the keys are sawed apart and the ivory polished and finished complete. The ebony black keys are then made and put on and polished, and the key-board is complete; the key-maker has finished his part of the piano. The ivory used is of the finest quality, and an article of great expense; its preparation from the elephant's tusks, of sawing, bleaching, &c., is mostly confined to a few large dealers in the United States. The most important concern of the kind is that of Messrs. Pratt, Brothers & Co., of Deep River, Conn., who supply most of the large piano-makers in the Union. As the ivory comes from them, it is only in its rough state, sawed out to the requisite sizes for use, after which it has to be seasoned or dried the same as lumber, and then prepared and fastened on the key; then to be planed up, finished, and polished, all of which requires a great amount of labor, much skill, and experience. Besides ivory, Messrs. Boardman & Gray use no small quantity of the beautiful variegated "mother-of-pearl," for keys in their highly ornamental, finished piano-fortes, a material itself very costly, and requiring a large amount of labor to finish and polish them with that peculiar richness for which their instruments are so celebrated. In this, as in the other departments, each workman has his own special kind of work; nothing else to attend to but key-making; his whole energies are devoted to perfect this part of the instrument.
