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Title: |
1848 Article-George B. Hartson, Metal Planer |
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Source: |
Scientific American, V 3 #38, 10 Jun 1848, pg. 297 |
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Insert Date: |
11/2/2014 9:26:54 PM |
Iron Planing Machine
No person who is acquainted with mechanism, will doubt the assertion, "a good mechanic is known by his tools." The fact is, that good work cannot be expected to be accomplished with indifferent implements, and of this fact our machinists and manufacturers are becoming fully convinced. It is not always a low priced article that is a cheap one, but often the very reverse. It is better to have a good, strong, and perfect tool at once and, although it may be of a good price, yet it is cheapest in the end. Of this important particular in tool making, Mr G. B Hartson No. 42 Gold St., this City, seems to be fully aware. He has taken great pains and much care in the making of his machines, getting them up in the most perfect and complete form, and his success in this branch of business has been commensurate with the sagacity and enterprise manifested in conducting it. The above engraving is, that of a very beautiful iron planing machine, far superior to many that we have seen in principle, and the workmanship unsurpassed. Those who are acquainted with this kind of machinery will readily understand it, those who are not will be able to get some idea of it by the following description. This is a front view, somewhat foreshortened, but is a good engraving. K, is the bed plate on which the work is placed, it having places for the steadying pins. G, represents a plate under the operation of the chisel fixed in the tool head E. F, is a small wheel to raise or lower the tool head by a screw in the rest D. On the tools which Mr. Hartson makes, there is an index on the rest, for a pointer, so as to make a cut at any desired angle. A A, is an upright frame with slots in it to raise or lower the slide C, by the screw rod and bevel gearing B B, to accommodate the thickness of work to be operated on. The work is moved forward to the chisel on the bed-plate by a cog pinion on the axle of P, working a rack on the bottom of the bed plate. N is the band upon the outside pulley that give the forward motion. By a dog placed at any desired point on the bed plate, when it has traveled the distance forward required, a cam is struck, which by the lever clasp seen around the band N, shifts the said band to the inside pulley and the return movement is made. This is about five times faster than the forward movement, so that but little time is lost in the return. This arrangement is hidden in this view, but suffice it to say that 0, is a plate wheel with the cogs inside, which by the inside pulley of the gang on the shaft of the pinion P, being loose thereon, but attached by a large pinion to work the plate wheel, the quick back motion is produced. The crooked lever I, and the spur wheel gearing H, are for the purpose of shifting the rest on the slide so as regularly to traverse the whole face of the work to be planed. R R, are two grooves of a wedge shape, for wedge rails of the bed plate to slide therein and keep it steady. The whole work is got up in the neatest and most solid form, combining strength with neat workmanship and all the improvements. We have repeatedly heard people express their high opinion of the machinery in the Cunard line of steamers. It is our opinion that much of their excellence depends upon the completeness and perfection of the machinery—the tools—in which the work is finished—no expense being spared by foreign workshops in this particular branch. This we are glad to see is an opinion now wisely entertained among ourselves, and no doubt the best results will follow. An examination of Mr. Hartson's machine will confirm all we have said of it. |
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1848 George B. Hartson, Metal Planer
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