This section is from the "Modern Machine Shop Construction, Equipment, And Management" book, by Oscar E. Perrigo. Also see Amazon: Modern Machine Shop Construction, Equipment, And Management.
Near the cutting-off saw is the rip saw, but located at right angles to it so that long lumber may be handled, and in order to increase this capacity it is placed between the two doors, thus permitting the handling of lumber of almost any length. A work bench occupies the entire length of the inner side of the shop, furnishing an ample space for five men at bench work. It is fitted with removable vises in order that long work may be handled if necessary. A door 10 feet wide leads into the yard and one of the same width into the storehouse. These should be sliding doors, the latter a properly protected fire door. A side door 4 feet wide gives entrance to the tram track from the yard. In the large outer sliding door it is well to put a small swinging door, say 30 inches wide, for convenient use in winter, to avoid the necessity of opening the large door for the passing in and out of the workmen.
The storehouse adjoins the carpenter shop, communicating with it by way of the 10-foot fire door just mentioned, and with the rear end of the machine shop by a 14-foot sliding door, also arranged as a fire door. The relative position, as well as the complete plan, is shown in the engraving in Fig. 156. A steam railroad track runs along the rear of the entire plant, and as closely as may be to the shipping doors of the storeroom. These are three in number, one of 12 feet, and the other two 8 feet in width. Six windows in this side and four in the end of the storehouse afford sufficient light for the usual purposes.
The floor of the storeroom is raised above the floor of the machine shop to such a height that the top of the platforms of the cars running on the machine shop floor track will be the exact height of this floor. A portion of the floor of sufficient width to admit a shop platform car is cut out, as shown in Fig. 156. By this means machines may be placed on these cars by the traveling crane in the machine shop, run into the storeroom and unloaded on the floor at the exact level with the top of the car platform. From here they may be taken on rollers (if they are skidded) or on machine trucks, and put in their proper places on the storeroom floor. At each of the three shipping doors there should be an I-beam extending out over the railroad track, upon which is mounted a trolley hoist, preferably operated by compressed air or electricity. These I-beams should extend back at least to the center of the storehouse and, better still, all the way across it. They may be connected by lateral I-beams, by curves, by turntables, etc., so that nearly all parts of the storehouse may be effectively covered. The lateral tram car tracks will prove a valuable adjunct to this system in moving machines from place to place on the storehouse floor.
Fig. 156. Plan of Store House.
In storing machines of various sizes in the storehouse while awaiting shipment it is frequently difficult to get at just the size of machine wanted without the trouble and expense of moving several others, for it is a common saying among shippers that "it is always the machine in the furthest corner that we want." In the dotted lines in the plan, Fig. 156, is laid out an arrangement of machines of a dozen different sizes, in such a manner that any size may be brought out for shipment without materially disturbing those of any other size. Of course this shows an arbitrary lot of sizes, but the plan here used, of reserving central aisles with cross aisles at proper intervals, is a plan which storeroom men and shippers will do well to familiarize themselves with and to adapt to their special needs by changing it to suit the particular class of machines with which they have to deal.
In the case of small machines that may be stored on shelves, provision should be made for them by arranging shelving on the alcove plan, similar to that employed in storing patterns in the pattern storage room. In such cases such trucks as heretofore described in these chapters may be advantageously used, the truck wheels being located so as to fit the regular shop track. Manufactured machines may then be handled with very little labor of loading and unloading, the use of the overhead trolley being brought into requisition whenever possible. Branches from them may be run over the centers of the alleys between the sections of shelving as may be necessary.
In all manufacturing establishments making machines in whose construction cast iron enters considerably, there is more or less painting required. The present demand is for very clean, smooth work, finished with some one of the various machine enamels. These enamels, so called, are to a great extent composed of a pigment mixed with some kind of varnish, usually of gum copal, thus forming the "air-drying enamel," in contradistinction to the "baking enamel," so much used on bicycle parts and similar work. In the manufactory of the kind under consideration the machines will usually be of a size to render their removal to a special paint shop, and from thence, after painting, to a storehouse, a matter of considerable expense. They are, therefore, painted in the erecting departments, and the expense of providing a special painting department is avoided. Still there must be a safe and proper place for keeping paints, oils, and other painters' supplies and materials, and also to serve as a sort of shop for the painters.