|
Title: |
1919 Article-Fosdick Machine Tool Co., 16" Engine Lathe |
|
Source: |
Lathe Design, Construction and Operation 1919 pg 325 |
|
Insert Date: |
3/18/2011 8:07:34 PM |
The Fosdick Machine Tool Company, better known as builders of radial drills, have recently commenced the construction of lathes also, and the one shown in Fig. 255 is entitled to special consideration as the aim of the makers evidently is to produce a lathe for practical use that will meet the demand for a good lathe at a reasonable price. This lathe is equipped, as illustrated, with feed box and with compound rest. The bed is made in different lengths from 6 to 12 feet, with cabinet or regular legs, and with or without oil pan. The spindle bearings are 2 3/4 and 2 1/8 inches diameter; there is a 1 ¼ inch hole through the spindle, and draw-in chucks are furnished when required. The bearings are bronze bushed throughout, and constant lubrication is afforded through an endless chain and large oil pockets. Owing to the design of the head, a three-step driving pulley may be used in place of the five-step cone, insuring a more powerful spindle drive when required for high-speed steel work.
The carriage has bearing surfaces of ample length and width on the shears, and the apron is of the box-section type, insuring strength and stiffness. The design of the tail-stock is clearly shown, and also that of the follow-rest. The compound rest is designed to receive a heavy tool-post. The compound feed box shown is the well-known Emmes device, giving forty changes, the screw-cutting feeds ranging from 2 to 56 threads per inch, and the feeds for turning being just one fourth as coarse.
The taper attachment can be placed on any of the lathes without changing the bed or fitting it with brackets, and a turret of pentagon form, for the carriage, can be furnished when desired.
All screws on any part of the lathe requiring adjustment are operated with the tool-post wrench. The friction countershaft has self-oiling bearings and oil wells are formed in the friction pulleys.
The swing over bed is 16¼ inches, and over carriage 10¼ inches. With the 6-foot bed, the length taken between the centers is 34 inches. The width of the five-step cone pulley face is 2 5/8 inches, and of the three-step 3 3/8 inches. The countershaft speed with five step cone is 120 revolutions per minute, and with three-step cone 250 revolutions per minute. The weight of the lathe with 6-foot bed is 2,000 pounds, which is ample for a lathe of these dimensions, and considerably above the average. |
|
1919 Fosdick Machine Tool Co., 16" Engine Lathe
|
|