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 pattern maker's bench is shown in perspective in Fig. no. The top is 30 inches wide and 10 feet long. It stands 34 inches high. It is composed of hard maple at the front, 12 inches wide, and the rear portion of white pine, both 2$ inches thick. It is supported on three cast iron bench legs, the front feet of which are set back 5 or 6 inches, so as to be out of the way of the pattern maker's feet. The upper 16 inches of these legs have a facing of hard maple, that on the center and rear legs having holes for the introduction of pins for supporting long work when held on edge. Four drawers, with flush pulls, are placed in a case under the rear portion of the bench, for holding small tools, files, and a variety of similar articles found necessary by every pattern maker.
At the rear end of the bench is formed a compartment under the bench for holding short pieces of hard wood stock, dowel pins, and similar materials. At the head of the bench is located an Emmert universal vise, which seems to be the best device yet put on the market for this purpose, as it may be placed in almost any position convenient to the workman, and will hold a piece of almost any form with equal facility. At the back of the bench is a shelf or tool rack extending the whole length, and at a proper height above it is one extending one half the length. These are to be properly perforated for the reception of the ordinary tools of the pattern maker, such as his chisels, gouges, auger bits, twist bits and drills, screw drivers, and all similar tools. Over this short tool rack the backboard is extended up to a light rail, so as to provide a space for hanging larger tools, such as bit-stocks, back saws, and tools of this nature. At the back of the rear half is an open frame whose top bar is provided with pins for hanging large saws and similar articles. If the kind of work renders it necessary a bench trimmer should be attached at the rear end. This style of a bench is at once rigid and substantial, does not occupy unnecessary floor space, is compact and complete in all its arrangements, and for a first-class bench it is economical in cost.
Fig. 110. Pattern makers' Bench.
These benches are arranged with the head toward the wall and two feet from it, so that private tool boxes or cupboards may be conveniently arranged upon it. Their positions are clearly shown in the plan.
A large work table is provided for the second pattern maker, and one should be provided for the others when the nature of their work requires it. It may be placed either between the benches, or near their rear end, as may be most convenient.
It will be noticed that the benches and machines are so arranged that they leave a broad alley through the shop, and to the door leading to the machine shop gallery.
There is a regular wall bench and a large center table provided for the varnisher and the workman having charge of the marking, numbering, and cataloguing of the patterns. From this point they may be taken on properly-arranged platform trucks, to the pattern storage room, or to the foundry, as the case may require.
At each side of the stairs leading to the loft the individual lockers for the use of the men are arranged. These are of the expanded metal type, as built by Merritt & Co., or of some very similar material and construction, but never of boards, or any construction which excludes thorough ventilation and safety from fire.
The stairs just mentioned lead to the loft shown in the plan in Fig. 111 and in which is constructed a lumber drying room, as laid out in the plan and shown in interior perspective in Fig. 112. This room is tightly closed by double sheathing on the top, the back, and both sides. The front is closed by three sliding doors, arranged to pass each other, so that any portion of the front may be opened for the purpose of putting in or taking out lumber. The lumber racks are of wood construction, the posts being 4×5 inches, the two lower horizontal timbers 3×6 inches; the next two are 3 × 5 inches, and the upper three are 3 x 4 inches. These timbers should be firmly bolted together and to the sides of the room by through and through bolts, as there will necessarily be much shrinking of the timbers, and consequently no nails should be used. The sheathing may be put on vertically or horizontally, as preferred, but both thicknesses should run the same direction, and should break joints. The studding or timber work supporting the sheathing should not be over three feet apart, in the direction of the length of the sheathing.
In the drawing, Fig. 112, only the front frame is shown on the left of the room, to avoid a confusion of lines, as the form and location is fully shown on the opposite side. The frames should be placed seven feet apart, so as to accommodate lumber from 8 to 18 feet in length. The lumber is placed on edge, supported by three racks or frames of this kind, and held in place by round iron rods, ⅝-inch for the three lower sections, and «-inch for the three upper sections. These rods should be placed five inches apart in the lower section, four inches in the second, three and one quarter inches in the third, two and one quarter inches in the fourth, one and three quarter inches in the fifth, and one inch in the sixth, from center to center. The distance apart, in the clear, for the horizontal supports, should be eighteen inches for the lower four spaces, and sixteen inches for the upper two spaces, if lumber of the ordinary widths is to be used.