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Title: |
1880 Article-E. E. Garvin & Co., Hand Milling Machine |
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Source: |
American Machinist, 14 Aug 1880, pg. 3 |
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Insert Date: |
8/10/2015 9:38:23 PM |
New Hand Milling Machine
The new hand milling machine illustrated herewith, is well calculated for taking light milling cuts, and can be operated very rapidly. The box-shaped head is mounted on a planed iron table, with a groove around the edge to catch oil and chips. The cross slide may be adjusted 2¼ inches, by means of a screw with a square end for wrench, seen projecting in front. The screw that elevates and depresses the table passes down through the bed plate, and is operated by a hand wheel from beneath. Its vertical range is from the center to 4½ inches below. The steel spindle is 1 5/16 inches in diameter and 14 inches long, and has a 17/32 inch hole clear through it, tapered in front to receive the shank of the arbor. This shaft is provided with a three-speed cone pulley, whose diameters are 3½, 5, and 6½ inches, with 2 inch face. The feed has two changes. The boxes are made of composition, fitted with ample means for taking up wear. The table is 16 inches long by 4 5/8 inches wide. The hand lever is linked on to the end of the table, and the feed so arranged that the table can be fed along until the feed throws out, and then the table can be returned by the use of the hand lever, or a weight (shown beneath the machine) can be attached to the lever, making it self-adjusting.
There is an adjustable stop, located in a T slot on the side of the table, and it can be easily regulated to the required length of feed. The extreme length of feed by hand or power is four inches. The vise used on this size machine is ¾ inch deep and 4 inches wide, and will open 1 3/16 inches with the steel jaws removed. The centers permit 3¾ inches swing, and will lake work 6 inches long. The weight of the machine complete is about 360 pounds.
The machine is manufactured by E. E. Garvin & Co., 139 Center Street, New York. |
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1880 E. E. Garvin & Co., Hand Milling Machine
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