ectly to advertising, for the capable of folding up in a small compass and packed its bearing. Now, the only way to obviate this diffi- past few months, in the Scientific Ameeican; while in a box, and thus easily carried when traveling, culty seems to be to secure the tire to the wheel with- other… … This object has been effectually accomplished by William 0. Grover and William E. Baker, Boston, the device represented in the accompanying engrav- Mass., have petitioned lor the extension of a pateu* ing. Fig. 1 represents a carriage wheel having granted to them on the 22d day of June, 1852,-for…
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