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Title: |
1880 Article-Betts Machine Co., Horizontal Boring & Drilling Machine |
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Source: |
American Machinist, 14 Aug 1880, pg. 4 |
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Insert Date: |
8/11/2015 8:47:14 AM |
Horizontal Boring and Drilling Machine
The machine, shown in the cut is designed to bore and drill work in a horizontal position; its importance in a machine shop ranks next to the lathe and planer; in fact, for a great variety of work it is superior to a lathe, from the much greater convenience it offers in setting work, and from the fact of the boring bars being supported closer to the work than is possible in a lathe.
The spindle on which the cone pulleys are placed is made of cast iron, and is hollow from end to end, so as to admit the steel spindle which is placed inside of it, and which has a horizontal movement through it, besides being turned by it. Mechanics, at all familiar with the building of such an arrangement as this, will at once appreciate the great difficulty of making this spindle run perfectly true when traversing its different ranges. It is accomplished, however, by boring the cast iron spindle after it has been fitted and is running in its own bearings.
The feeds for the spindle are obtained at the back end of the machinery a system of gears that will feed it either backward or forward, as may be desired. It has three changes of feed, operated by an internal clutch very readily changed from one to the other; as well as a quick return for the spindle by hand.
The work is secured to a table which is raised and lowered by screws and bevel wheels. The table carries a saddle which has a movement parallel with the main spindle; on this saddle is across table which has a horizontal movement at right angles to it. It will thus be seen that any range of work within its scope can be performed by one setting by merely moving the table in the directions required on the work to be performed.
The operation of boring is with boring bars and cutters, the outer end of the boring bar being supported by a steady rest. The work is secured to the table, and does not move, but has the cutters fed through by the mechanism above described.
The steady rest can be removed from the machine, so as to admit all long work that requires drilling, and that would be inconvenient to put under an ordinary vertical drill; in fact, the design of the machine is such that all horizontal drilling as well as boring can be done with the greatest facility.
A facing tool is also provided, that gives the machine all of the advantages of a facing lathe for many kinds of work.
It will readily be seen that this machine is adapted to a great variety of work. It is manufactured by the Betts Machine Company, Wilmington, Delaware. |
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1880 Betts Machine Co., Horizontal Boring & Drilling Machine
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