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Title: |
1903 article - A. E. Quint's ten-spindle turret drill |
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Source: |
June 1903 Machinery |
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Insert Date: |
1/22/2014 10:41:04 AM |
TEN-SPINDLE TURRET DRILL.
The A. E. Quint Co., Hartford, Conn., have just added to their line of turret drills the ten-spindle drill illustrated herewith. This machine is designed for light jig drilling where it is desirable to use several sizes of drills upon the work without removing it from the jig. The drill is so constructed that the feed of the work to the tool, the indexing of the turret head and the change of speed are all performed by the use of foot levers, leaving the operator’s hands free to handle the jig or the work. Only the spindle pointing down to the center of the table rotates, and as all spindles, when indexed, point to same center the pressure of tool at work is at all times in center of table. Any spindle may be thrown into or out of action without stopping drill by means of the center foot lever which will release the turret locking pin. When the turret head is revolved to the spindle wanted the pin locks the head before the spindle rotates.
The two speed changing device consists of two friction pulleys on countershaft fastened to back side of the drill with a friction clutch between them, the clutch being held in contact with one of the pulleys by means of a weight, shown on end of foot lever. When necessary to change the spped of drill the foot is pressed on lever; this raises the weight and moves the clutch from one pulley to the other, then the flat spring on front side of base springs over top of lever and holds the clutch in contact with pulley. When the size of tools used demands more than two speeds, an overhead two speed countershaft may be used. Belted to countershaft on drill this will give four drilling speeds. The table is 14 inches by 20 inces; the distance from face of column to center of spindle 8¼ inches, while the greatest distance from the table to the spindle is 20 inches. |
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