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.
A car suitable to run on these tracks is shown in the drawings, in which Fig. 141 shows a side elevation; Fig. 142 an end elevation; Fig. 143, a bottom view; and Fig. 144, a section of one of the wheels, with a portion of the axle. Sufficient dimensions are given to enable any good mechanic to construct them. This car, constructed of oak planks, put together in the manner shown, will be amply strong for loads up to two tons. The top planks are fastened down with ⅝ × 4 inch lag screws, the heads with washers under them, and let in flush with the top of the planks so as to offer no obstructions. The frame is fastened, as will be seen, with ¾ × 6 inch machine bolts, the nuts of which are placed in mortises. The axle boxes are solid and fastened to the car frame by ¾ × 4 inch lag screws, and are also held rigid by ribs let into the side timbers, as shown.
So far we have considered only the plain platform car, which will be used for perhaps a majority of the transportation of material and stock about the plant. But there will be a demand for cars for special work, where a car of special construction and adapted to the conditions will be vastly more convenient, and better suited to the purposes for which it is used. As it has been the aim in designing and arranging this system of shop and yard tracks, and the necessary equipment for them on such a plan, that all the work of construction and installation may be done on the premises, and at moderate expense, the same idea has been carried out in reference to what may be dignified in railroad parlance as the "rolling stock" or equipment for it. With this idea in view, the different styles of cars represented in Figs. 145, 146, 147, 148, 149, 150, and 151 have been designed to meet the requirements of actual practice in the regular routine business of the machine shop and the various departments necessarily connected with it.
Fig. 141. Side Elevation of Tram Car.
The plain platform car, suitable for use in the shops, was seen in Figs. 141, 142,143, and 144. This form is the basis of all the cars shown in the succeeding illustrations. Fig. 145 shows a car with stakes, supported in ordinary cast iron stake pockets bolted to the frame of the car, proper recesses having been cut in the top planking or platform of the car to accommodate them. These stakes may usually be 20 to 24 inches in height from the top of the car platform, and 2« × 3 inches at the largest part. Such a car will be useful for transporting lumber in long or short lengths, for forgings, for small boxes, or bundles of manufactured stock to be shipped, as well as many other uses which will readily suggest themselves.
Fig. 142. End Elevation of Tram Car.
In Fig. 146 is shown an ordinary platform car having a box of iœ to 2 inch plank, held together by ⅝ rods, as shown, and held in place on the car platform by the straps A A, so as to be readily removable and adaptable to any of the regular sized cars. This form of car is very useful in transporting lots of small castings, forgings, drop forgings, partially finished work, and any kind of stock and material which may be handled roughly and is not too large or clumsy for piling in such a box.
Fig. 143. Plan of Under Side of Tram Car.
Fig. 147 shows a car specially arranged for transporting spindles, short shafts, and similar work which have been finish turned, ground, or have passed through such operations as render their careful handling necessary. In this case a sub-base of 1¬-inch plank is placed two or three inches above the car platform, and a similar one at a proper height above it to accommodate the work to be handled. These supporting planks are perforated with holes of a proper size to suit the work. They are supported and held in place by plank ends, corner posts, or in any convenient manner. These supporting shelves or frames may be attached to the car as a part of it, or they may be made removable like the box shown in Fig. 146. This form furnishes a safe and convenient method of handling this class of work.
Fig. 144. Section of Car Wheel.
Fig. 148 shows a car arranged with racks for holding a series of trays for the reception and transportation of small, finished parts, or parts going from the machines to the polishing room, plating room, finished parts storeroom, etc. Such cars may be constructed to take trays the full size of the car platform, one half, or one third of it, or for any combination of these sizes, the trays sliding into their places like the printer's type cases. They will be found very convenient for handling and for accounting for small parts in their transit through the shop.
Fig 145. Car with Removable Stakes.
Fig. 146. Car with Removable Box.
Fig. 147. Car Arranged for Special Work.
Fig. 148. Car Arranged for Trays.