[Illustration: ACTION-MAKING MACHINE, ETC.]
In this department, we again see the perfection of machine-work. The action is one of the most important things in the piano-forte. On its construction and adjustment depends the whole working part of the instrument; for, however good the piano-forte scale may be, or how complete and perfect all the other parts are formed, if the action is not good, if the principle on which it is constructed is not correct, and the adjustment perfect, if the materials used are not of the right kind, of course the action will not be right, and it will either be dead under the fingers, without life and elasticity, without the power of quick repetition of the blow of the hammer, or soon wear loose, and make more noise and rattling than music. Thus will be seen the importance of not only having that action which is modelled on the best principle, but of having an instrument constructed in the most perfect and thorough manner. All parts of it should be so adjusted as to work together with as much precision as the wheels of a watch.
Messrs. Boardman & Gray use the principle which is termed the French Grand Action, with many improvements added by themselves. This they have found from long experience to be the best in many ways. It is more powerful than the "Boston, or Semi-Grand;" it will repeat with much greater rapidity and precision than any other; it is far more elastic under the manipulation of the fingers; and, to sum up all, it is almost universally preferred by professors and amateurs, and, what is still a very important point, they find, after a trial and use of it for many years, that it wears well. What is technically called the action consists of the parts that are fastened to the key, and work together to make the hammer strike the strings of the piano when the key is pressed down. The parts made of wood, consisting of some eight or ten pieces to each key, are what compose the action-maker's work; and, although they are each of them small, still on their perfection and finish depends much of the value of the instrument in which they are used. Various kinds of close-grained wood are used in their construction, such as white holly, apple or pear-tree, mahogany, hard maple, red cedar, &c., and other kinds as are best adapted to the use put to. They have to be closely fitted; the holes for the centre pins to work in must be clothed with cloth prepared expressly for this work. Buckskin of a particular finish, and cloth of various kinds and qualities, are used to cover those parts where there is much friction or liability to noise, and every part so perfectly finished and fitted that it will not only work smoothly, and without any sticking or clinging, but without noise, and yet be firm and true, so that every time the key is touched the hammer strikes the string in response. The action-maker completes these different parts of the action; and then another workman, who is called the "finisher," fits them to the keys and into the case of the piano; but, before we enter into his room, we will see to the preparation of another important part of the action, namely, the hammer. This is another extremely important thing in piano-forte making; the covering of the hammers is one of the most peculiar branches of the business. It is one that long experience and minute attention can alone perfect. The hammer head is generally made of bass-wood, and then covered with either felt prepared for this purpose, or deer or buckskin dressed expressly for this business. The preparation of buckskin for piano-forte makers is at this time quite an important trade, and the improvements made in its dressing of late years have kept full pace with the other improvements in the piano. The peculiar ordeal they undergo we cannot here explain; but we can only see the beautiful article finished for use. Some of them for the under coatings or layers are firm and yet elastic and soft, while those prepared for the top coating or capping are pliable and soft as silk velvet; and these, when correctly applied, will form a hammer which, if the piano-forte is perfect otherwise, will always give the rich, full organ tone for which the pianos of Messrs. Boardman & Gray are so celebrated. Those employed in covering and preparing hammers do this exclusively, and must perfect their work.