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1869 article: Window-blind boring and mortising machine |
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Scientific American, 4 September 1869. |
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3/18/2003 12:00:23 AM |
The complete article text is below. The referenced patent is #24,688 and the "pending" patent referred to became #97,040.
Improved Machine for Boring and Mortising Blind Stiles
This machine, as illustrated in the accompanying engraving, embraces all the features of the machine for which a patent was granted to Leonard Worcester, July 5, 1859, together with several other valuable improvements for which a patent is now pending, and which, it is claimed, render it the most efficient machine for the kind of work it is designed to execute on all kinds of stock now manufactured.
Machines have been made for some time that would mortise soft lumber free of knots and shakes, but none before this have had the necessary combination for both boring for revolving slats, or mortising for fixed slats, in all kinds of stock, hard or soft, clean stock or knotty and shaky timber, and for leaving the mortises free from chips ready for the insertion of the slats.
This machine is entirely automatic in its operations, either boring round holes for the pivots of revolving slats, or mortising the recesses for the ends of fixed slats. In cutting these recesses it can be adjusted to make them at any required angle. The cutting of the recesses is done by means of a reciprocatory or traversing burr or bit, which, we have already said, can be used in any obstinate description of wood, where ordinary machine chisels fail. It will also make the mortises any length from a round hole up to two and one half inches, and of any width or depth required in a window blind.
All the operator has to do is to put in the stiles and set the machine in motion, when it does its work, and, having done it, stops. It does the work on both stiles at once at the rate of sixty mortises per minute. One man, the inventor asserts, can set out and mortise from 125 to 150 pairs of blinds per day with one machine.
The bit or burr is a very simple device, not liable to be broken and easily kept sharp. It costs only ten cents.
The machine is very simple in construction and is made wholly of iron and steel. It is thoroughly built and easily set up and put in operation, and is not liable to get out of order. Not more than one half a horse power is required to run it.
It is peculiarly adapted to the work on car blinds, where the mortises are less than one eighth inch in width and, consequently, difficult to make with chisels of ordinary construction. Agents for its introduction throughout the United States are wanted. For further particulars address Martin Buck, agent, Lebanon, N. H.
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