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.
The vertical system is shown in Figs. 89 and 90 and consists of two parallel chains A A, passing over the sprocket wheels B B at the top and under similar ones at the bottom. These chains may be driven from either the upper or lower shaft as may be most convenient. Pivoted to these chains are the carriers C C C, which may be made of cast or sheet metal, and so formed, with the center of gravity considerably below the pivots, that they may always remain right side up, even when passing over the shaft 6. These carriers should be about eight feet apart on the chains, and they should be painted a different color for each floor to which they are consigned, so that their contents may be readily removed at the proper destination without stopping the movement of the device for that purpose, it being understood that all descending carriers are consigned to the tool room on the first floor, or toward it, provided it is located on any other floor.
These carriers may be so constructed as to automatically dump their contents at the proper floor without the attention of an attendant for that purpose. This system may be used in situations where continued vertical and horizontal transportation is wanted, by running the chains over guiding sprocket wheels at the proper turning points, as the carriers will always maintain their proper positions no matter what may be the direction of movement of the chains. However, for long horizontal distances this system will not be found as economical or as efficient as the first method described.
The chain system should be run at a much slower speed than the cord system, as the carriers should be unloaded while in motion, while those on the cord system come to full stop until they are again wanted. Each will be found to be best adapted to its own particular sphere of usefulness as herein described.
In the rough stock room the cases are also arranged in alcoves, and are of the form shown in Fig. 91. These are made wider at the base to accommodate larger articles which are more conveniently handled at this height than higher. The construction is plainly shown in the drawing. At the upper portion plain shelves are provided to hold articles seldom used or of such irregular form as are not convenient to store in bins as arranged below. These may be constructed with a retaining strip at each side, thus forming bins all the way across the case, if the form of the articles stored renders it necessary. In Fig. 92 is shown a modified form of these cases, in which the center portion has formed in it compartments aa, in which may be stored round and square cold drawn steel, brass tubing, and similar articles, in a safe and convenient manner and without occupying any additional floor space. Fig. 93 shows a case, the front end of which is arranged to hold such articles as sheet brass, copper, or vulcanized fiber, in a similar manner to that provided for storing large window glass. This form of construction will be found better than to lay sheets in a horizontal position, as they can be more conveniently reached, and by providing entirely separate compartments for each thickness, small pieces can be more easily cared for and readily found when wanted.
Fig. 91. Modified Form of Stock Cases with Lower Bins Enlarged.
Fig. 92. Modified Form of Stock Cases with Pigeon Holes for Rods, Tubing, etc.
Wire in coils may be hung upon the walls. It should be so assorted and arranged that all of one material shall be together and that the smallest size is at the top, or at the left of the group.
Fig. 93. Combination Stock Case with Compartments for Sheet Metal, etc.
Various modifications of these plans may be necessary in adapting the arrangements to different conditions and classes of materials to be handled, but in a general way the construction shown will be the most useful, both as to the proper storing and care of the stock, materials, and tools, and as to their convenient and consequently speedy delivery when called for.
Cotton waste, or whatever equivalent is used, may be kept in a bin built under the bench, or in a similar one built under the stairs.
A small counter scale weighing up to 80 pounds and provided with a pan for weighing small articles should be provided for the counter.
The Purchased Parts Storeroom is located in the office portion of the building and is arranged in a similar manner to those just described. All articles purchased outside of the shops and in a complete form to enter into the work, are here received, stored, and issued. This will include all kinds of screws, bolts, hardware, belting, belt fastenings, etc. It might include files, but they are here classed as tools and put in the tool storeroom. Oil cans, hand lamps, file cards, emery cloth, grain emery, etc., may also be kept in the tool storeroom, as being more nearly allied to tools than to either rough stock or purchased parts. For the same reason it might be well to place belting and belt fastenings in this room.