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 plant confined to a limited space. Compact form, capable of easy expansion. The main building or machine shop. Its general arrangement. The offices. Second-floor plans. The drawing room. The pattern shop. The foundry. Foundry departments. The forge shop. Yard tracks. The power house. The storehouse. The carpenter shop. Stock sheds. Railway facilities. Increasing the capacity of the buildings. Enlarging the machine shop. Two plans. Enlargement of the foundry. Additional power facilities. A larger site desirable.
In the arrangement of the general plans for the buildings composing the plant it is supposed that the amount of land is limited and therefore a compact form is necessary. Of course a much larger area would be advisable, but it is much easier to design the buildings and to arrange them in their relation to each other if we have ample area in which to do so. Therefore, the compact form, capable of easy expansion in any direction, is chosen as likely to be the most useful one to those desiring information on the subjects herein treated.
With this in view cuts showing the general plans for suitable buildings of a size and capacity for the usual work, arranged in compact form, of modern construction and supplied with proper conveniences for handling the material and product, accompany this article. The entire plan requires a site of somewhat less than 300 x 450 feet.
Fig. 1 is a front elevation of the buildings composing the plant.
Fig. 2 shows a compact design to meet cases where the amount of land is limited, and illustrates how all the buildings may be so grouped as to render the handling of materials and transportation of them as simple, direct, and economical as possible.
A railroad track should pass near the works, and from it a branch should be brought closely past the rear and to one side of the collection of buildings. Such an arrangement results in a great saving in the expense of hauling both material and product, and permitting the general arrangement and development of the plan herein proposed.
The main building, or machine shop, is 100 x 375 feet, divided lengthwise into a central portion 40 feet wide and 52 feet high, with side wings or bays each 30 feet wide. The central portion is open clear to the roof and has a traveling crane of ample capacity moving over its entire length. The side wings are divided into a main floor, on a level with the central portion, and a gallery or second floor; the first being 16 feet and the latter 14 feet high in the clear. This gallery is also built across 18 feet of the front end, thus connecting the two galleries and furnishing a platform by way of which the traveling crane may transfer material and product to and from the main floor. Along the center of these galleries and across the front end runs a tram track, provided with light push cars for facilitating the transfers. Stairways are provided at each end and in the center for conveniently and speedily reaching any part of the shop from floor to galleries and vice versa.
At the front end of the machine shop proper are the offices connected with and forming a part of it, consisting of two structures 50 feet square, with a driveway space of 20 feet between them. On the first floor of one of these are the offices, storeroom, etc., and in the other the tool-making room, a room for storage tools and fixtures, and a stock room, for small finished parts. On the second floor is located the drawing room, while over the driveway is the pattern shop.
The offices are only those particularly connected with the manufacturing and shipping, and not the general offices of the company. A wing connects the front buildings with the foundry. The ground floor of this wing is used as a storage room for pig and scrap iron, and a flask room, while the second floor is a pattern storage loft, connected at one end with the pattern shop and at the opposite end with the foundry by a trap door 8 × 18 feet, directly over the train track leading through the flask room.
Fig. 1. Front Elevation of Shops for a Model Plant to build Medium Sired Machinery. Scale, one inch equals forty feet.
The foundry is 85 × 150 feet, arranged with a central part 35 feet wide and two side wings or bays, each 25 feet wide. The central part is covered by a traveling crane running the entire length. There are two cupolas, a large and a small one, served by two cranes of sufficient reach to swing into the central space covered by the traveling crane.
Large work is cast in the central space or within reach of the cranes, while small work and bench molding occupy parts of the floor not covered by the cranes. On each side of the central part are tram tracks, which are crossed by one running to the flask room and one that goes through the chipping room and on across the yard to the machine shop.
Fig. 3. Plan of Second Floor of Front Building. Scale, one inch equals forty-four feet.
A wing built on the side of the foundry toward the machine shop contains a platform upon which coal and iron for charging the cupolas are delivered by a tram car raised to that level by an elevator arranged for the purpose. This stock is weighed on track scales in front of the elevator. Beneath the cupola platform are the tumbling barrels, convenient to the cupolas for working over the slag, and to the chipping room for cleaning small castings.
The flask room is located at the front, while between it and the tumbling barrel space is the core room, containing a suitable core oven. At the opposite end, facing the yard, is the chipping and pickling room, where the castings brought in from the foundry are pickled, chipped and weighed, before being sent to the machine shop. If the castings are too heavy for convenient handling in the chipping room they may be run through to the yard and there handled by a boom crane covering the tram track upon which they are run into the machine shop. Castings of moderate size, yet too heavy to move by hand, are expeditiously handled by a light overhead trolley hoist in the chipping room.