In a Swiss watch, or any watch where the jewel is set into the plate, have some one of the devices for throwing up the burnished lip, and then select a jewel that just fills the space, and then with a smooth pointed punch, such as I described I used for closing up a pivot hole, I turn this lip back by sliding this round pointed punch around the outside, making it act as a burnish. Cap jewels I either treat in the same manner as the last, or cut away the setting, and insert them as they are inserted in most Swiss watches.
I have now taken up the more common repairs, and will close by hastily speaking of the more rare cases, and the adjustment of the hair spring, etc., etc. It is often the case that there is never end shake to the balance to make it absolutely safe when screwed into the case, and when this happens I take the point of a sharp graver and prick up a burr on the bridge, and never on the plate, as any unskilled workman does, for the under side of the bridge never being finished, you really mar nothing, and sometimes this raising of the cock (or bridge) becomes a necessity, to have it clear the rim of the balance, which, if raised, it will clear, and then by bending down the end of the cock at point where the jewel is, and thus regulate the end shake. I hardly know how to give directions how to proceed in adjusting hairsprings, when they are disarranged, but if I could see you, I could explain by example what I cannot well do in words. To commence, a hairspring, when there is no power applied to balance from the jewel pin, should be, when pinned, just as free from any twist or cramping as it would be if lying flat and free on a smooth piece of glass, before it has been pinned at either end, and when it is pinned in the watch (at stud and collet) it should be thus free. To bring it thus requires demonstration that cannot be made on paper, unless you could make diagrams, too numerous for this article.
What I have said regarding it, however, gives an idea of how a hairspring should be pinned. Common sense is demanded here as elsewhere. To put a watch in beat, too, is a very important item, which I do by placing sharp pointed tweezers, first on one side of the arm of balance and then on the other, and so pin my hairspring in the stud, that it will let off as readily on one side as the other. I had forgotten to say that every watch should have a little oil on the face of the pallet stones. I know full well that some workmen will say that there should be none, but I can tell of scores of watches that have failed and indeed stopped simply for want of oil on the pallets. Selecting mainsprings, too, needs much more care than is usually given to this department, and as a rule even the watch factories fill the barrel too full, that is, too long springs. Whether I am correct in this or not, you cannot be too particular in selecting the right strength, length, and width of mainsprings. Mainsprings should be well and carefully oiled.
There are many ways of replacing broken teeth in wheels, and the width of the web and the size of the teeth has much to do with how they are put in, but I usually dovetail them in, and then with the very tiniest bit of soft solder fasten them, but in so doing be positive you have got off all soldering fluid, that it will not rust the pinion into which it meshes, and be very particular to have it exactly like the rest of the teeth in same wheel, and don't mar the web of the wheel more than is possible.
I will now draw this article to a close, well appreciating the fact that I have only made a superficial attempt to instruct younger men in the cleaning and repairing of watches, for there is almost an endless variety of special repairs coming almost unexpectedly to any one, even if they have been in the business a long time, as I have, and as I first said, I am learning daily some new phase of the business, and am surprised that I never had known it before. I have, too, taken perhaps more space than I ought, regarding tools and bench, yet the older I grow, the more I can see the importance of this part, that I may be enabled to do work well and quick. Besides, I have left such repairs as the chain and fusee, uprighting wheels, repairing cases, adjustment to position, heat and cold, isochronism, enlarging jewels, or changing angles of pallet stones, etc., etc., all of which I do as necessity demands, as well as the care of striking watches, fly backs, etc., which, too, I make a specialty of, and of chronometer escapement watches, which would take more space than I feel disposed to ask you to give me.—American Jeweler.
THE NEW CENTRAL RAILWAY STATION AT FRANKFORT ON THE MAIN.
The new central railway station at Frankfort on the Main is one of the most imposing structures of modern times, not only as regards its dimensions, but also because of the effect which its architectural proportions produce upon the eye. Nobody looking at the long line of buildings surrounded by gigantic perron halls can help being impressed with their grandeur. The beholder, however, is not only struck by the general aspect, but also by the beauty of detail in this magnificent specimen of the Renaissance style. The interior of the perron hall shown in one of our engravings is especially impressive, and every one will admire the graceful outlines of the heavy iron structures in the upper part, which, in consequence of their enormous height, look from below like a spider web.
The base and the earth works were begun in the summer of 1881, and if we take into consideration the fact that 2,700,000 cubic meters of sand and gravel were necessary for the foundation, we will have some idea of the scale on which the edifice was undertaken. In 1883, the great hall, which has a width of 220 meters and which will shortly be opened to traffic, was begun. The perspective view of this portion of the station is given in one of our engravings. Inspector Eggert had the general management of the building, which was erected after the plan submitted by him, and which received the prize in the competition between the different architects. Herr Frantz, a distinguished engineer, who undertook the general supervision of the construction, had an important part in the execution of the entrance hall for the trains, and it was he, also, who built the perron hall, after designs of Herr Schwedler.
The middle part of the station, which contains the porch, the ticket offices, the baggage department, the police quarters and the telegraph offices, projects, as shown in the picture, considerably beyond the rest of the building, and by the distinct membering of its moulding stands out conspicuously from the whole. Protruding portals of peculiar structure and corner pavilions enliven the aspect of the wings of the edifice, the great round arched windows of which are separated from each other by powerful stone pillars. The corner pavilions to the left in the view contain the so-called imperial apartments for the reception of royal travelers, and on the other side are the meeting hall and reception rooms of the different railway administrations. On the right and left of the imposing main vestibule, which is distinguished by the strength and the beauty of its style, lobbies with arched roofs lead to the waiting and dining rooms, the ladies' rooms, the imperial apartments and the above mentioned meeting hall of the administration.