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4,876
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Dec. 09, 1846
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Mortising and tenoning machine
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Thomas A. Chandler |
Rockford, IL |
From the 1847-09-18 issue of Scientific American: "Mr. T. A. Chandler. of Rockford, Illinois, has invented a Mortising Machine which, with one man to turn the crank, will cut a mortice six inches long, and as many deep in half a minute, and if the power were sufficient, it is calculated that it would do double the work in the same time. It can easily be adapted to all kinds of work, whether upon heavy timber, or upon doors, window-sash, &c., and can be driven by steam, water or any other power, as may be desirable. Although working so rapidly, the mortice is cut as smooth as tools could possibly make it, and without the least fracture of the wood, and the partition between any two may be as thin as pasteboard. The advantage claimed for this machine over those for a similar purpose now in use, is that the mortice is completely finished at one operation, only a few loose chips being left in it. There are four chisels, two of which move perpendicularly, and two have an eccentric motion, whose use is to chip out from the centre after the others have cut the ends. The latter strike laterally and at the same time with an upward circular movement. We have seen this machine, and believe that Mr. Fitch is now in this city, endeavoring to dispose of patent rights, &c."
Inventor Chandler also received an 1849-07-10 patent for "Improvement in mills for grinding", and an 1856-11-25 patent for a "hand corn planter", plus an 1866-04-10 patent 53,783 for a "thread tension device for sewing machines". |