US Patent: 5,573X
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Construction and Application of Wheels to Carriages
Construction and Application of Wheels to Carriages of Pleasure, or of Burden, or to Machines for Moving Heavy Burdens
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Patentee:
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| George D. Bridgeman (exact or similar names) - New Haven, New Haven County, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jul. 16, 1829 |
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Joel Havens
X-Patents
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Description: |
| Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2,000 of the almost 10,000 documents were recovered. Little is known about this patent. There are no patent drawings available. This patent is in the database for reference only.
“For an improvement in the construction and Application of Wheels to Carriages of pleasure, or of burden; George Bridgman, New Haven, Connecticut, July 16th.
The object proposed by Mr. Bridgman, is, to construct wheels which shall have the effect of rendering the moving of any heavy body much easier than in the common method, and being capable of surmounting any obstacle which may intervene to prevent the movement, or progress of a carriage, with less physical, or mechanical power, than in any other method heretofore known or used.
In the method proposed, eight wheels are to be used where four formerly answered the purpose. Four of the wheels are to be large in diameter, and the other four so small as to be capable of being placed between the hub and rim of one of the large wheels. Suppose the four small wheels to revolve upon the carriage axles; the four large ones must then be placed on axles above these, so that the outsides of the rims of the small may stand on the insides of the rims of the large wheels; these rims being made wide, and projecting inwards for that purpose. The large wheels are to be very loose upon their axles, in order to allow them to have very considerable play, that they may not bind with the small wheels. The action of these wheels, thus applied, we are told, will be that of one wheel” but we are still incredulous on this point. Some two or three years ago, a similar plan was proposed, and we believe patented, in England; it was described in the journals as a carriage to carry its own railway; the only difference in the two, is, that in the English plan nothing was said of the means of supporting the large wheel by a second axle, or of any other mode of keeping it in its place; probably, because the inventor perceived that this was a point of some difficulty, and he concluded, therefore, that it was best to allow the large wheel to take care of itself.
Without agitating the question of the theoretical utility of the thing upon a level road, let us suppose the large wheel to encounter an obstacle six inches in height; in this case the play upon the axis of the large wheel would be of but little avail, and if there would be no interlocking and interfering of the little and the big wheels, as they are compelled to climb the hill together, why then we are out in our judgment, which, like the invention itself, would be nothing new, as the one has frequently happened here, and the other has been proposed, and perhaps even tried, in England. To any one who is particularly desirous of making a noise in the world, we apprehend that the patent double wheels, with plenty of play, would be very agreeable.”
Journal of the Franklin Institute Vol. 7, Oct. 1829 pg. 259
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