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.
To avoid confusion in the tool-making department, a tool storeroom is provided, where the usual supply of lathe and planer tools, twist drills, taps, reamers, arbors, etc., is kept and issued to the tool-distributing points such as the general room near the engine room and the foremen's offices. In this room are also kept, when they are not in use, the jigs and fixtures necessary for machining small parts, as they can be better cared for here than in the machine shop. The entrance to this room for the workmen is so arranged that he enters a space in front of a counter and has no access to the main space of the room. This will prevent confusion and enable the tool keeper to do his work quickly and properly.
To save unnecessary distance in reaching all tools and fixtures the alcoves of shelves are so placed that the alleys all terminate near the issuing counter. At the right is a convenient bench arranged with arbor racks as shown in Fig. 82. These racks will accommodate arbors from 4 to 7 feet in length. The same form of racks may be arranged for any length too long for conveniently placing on the shelves. Beneath this bench are strong shelves upon which may be placed heavy jigs and fixtures.
Fig. 83 shows cases of inclined shelves arranged with strips for holding such tools as drills, reamers, short arbors, and similar tools, and at the far end another form of arbor rack. This may, if preferred, be arranged similar to the arbor rack shown in Fig. 82. The series of inclined shelves is continued as high as is within convenient reach, and above this point horizontal shelves are provided which will be found convenient for holding jigs, fixtures, and similar articles that are seldom used, and not too heavy to be stored at that height. At the base of these cases a series of large drawers is located. They will be found very useful in storing small tools not needed on the shelves, and a variety of such articles as are best kept in such a receptacle until wanted for adding to the regular issuing assortment on the inclined shelves.
Fig. 82. Bench, with Rack for Long Arbors, Boring Bars, etc.
In Fig. 84 is shown a form of case of inclined shelves for longer tools than can be accommodated in the cases shown in Fig. 83. Otherwise the arrangement is the same. The ends of these cases may be conveniently used for the posting of blueprint lists of regular or standard sizes of tools in stock, from which it will be easy to ascertain if a certain tool wanted is kept on the shelves. They may be used as tool check boards, being convenient to the desk and counter.
Fig. 83. Cases with Inclined Shelves, on each side of Alcove.
Fig. 85 shows a file case in which a regular system of arrangement of the files of different lengths, cuts, and shapes are provided for, so as to make the memorizing of their location easy and convenient. It will be noticed that the smaller files, as the 3-inch, 4-inch and 5-inch files, have each one shelf provided for them, while all of the larger sizes have two shelves to each length, as more different shapes and cuts of these are required. Also, that the coarsest cut is placed at the left and the triangular, square, and round shapes follow them toward the right, and that the files of each length are arranged in the same regular order. This arrangement will save much time in issuing files, as well as in distributing stock when it is received. The labels showing the shape, cut, and length are placed on the edge of the horizontal dividing shelves, the shape being shown as in the drawing. At the base, and below convenient reach in issuing, are compartments for stock. The sizes and shapes of files shown are such as are usually needed in ordinary machine shop work.
If a special class of work is done these sizes and shapes would, of course, have to be modified or added to, but the same general plan might be adhered to. As the files at the top of the case are much shorter than those lower down, a waste space will be left in the rear of them. This may be utilized by forming compartments as shown at aa, in which drill rods or other similar articles may be placed if such are kept in this room.
Fig. 84. Case with Inclined Shelves suitable for Long Tools.
From the window opening into the machine shop a system of tool carriers, similar to the cash carriers or the package carriers of a department store, may be run to the tool-distributing room near the engine room, to each of the foremen's offices, keeping out of the way of the traveling crane, and to the galleries. These will be very useful in sending in dull tools to the tool department to be ground and in quickly returning the same. Also, in keeping these distributing points supplied with standard tools in proper condition for use. Such a system will soon save its initial cost in the time that would otherwise be spent in carrying these tools, not to consider the many delays in the work, which is usually far more important. Several matters more or less closely related to this subject will be discussed in detail in articles on the management of the work of the establishment.
The speedy and economical transportation of small tools to and from the general tool room is a problem that, while of acknowledged importance in any large establishment, is of sufficient moment in many shops of more moderate dimensions, and should receive a larger share of consideration than is generally given to it. The requirements of modern shop practice that the employees should not leave their machines to grind tools, or to go to the tool room to procure or to return them, becomes a large factor in the problem of their quick transportation, and even with the system of errand boys to do this work there are many conditions of the modern shop where a good and efficient system of transportation in both vertical and horizontal directions becomes a necessity, if we consider economy along with efficiency.
Fig. 85. Front and End Elevation of File Case.