The Civil engineer and architect's journal, scientific and railway gazette . s obtained a patent for cec/rnit Improvements in the mode nf coiifitructijig ironwheels.—Granted October 28, 181-7 ; Enrolled April 28, 18i8. This invention consists in a mode of securing tlie tyre or hoop ofthe wheel to the spokes or inner rim, without the use of bolts orrivets. The patentee effects this object by using a dovetail groovein the tyre, and a dovetail projection on the rim, which is a methodthat has been previously adopted, therefore he makes no claim tothat; but tlie peculiarity of his invention consist
The Civil engineer and architect's journal, scientific and railway gazette . s obtained a patent for cec/rnit Improvements in the mode nf coiifitructijig ironwheels.—Granted October 28, 181-7 ; Enrolled April 28, 18i8. This invention consists in a mode of securing tlie tyre or hoop ofthe wheel to the spokes or inner rim, without the use of bolts orrivets. The patentee effects this object by using a dovetail groovein the tyre, and a dovetail projection on the rim, which is a methodthat has been previously adopted, therefore he makes no claim tothat; but tlie peculiarity of his invention consists in making thegroove larger than the projections, and filling the interstices withmelted zinc. In the words of tlie specification, the patenteeclaims the maiuifacture of wheels in wliich tlie dovetail groovein the tyre is wider at its narrowest part than tlie dovetail ])ro-jeetion on the spokes or the inner rim of the wheel is at its widestpart, and the filling the spaces left when the tyre is shrunk on withmelted metal or other hard substance. The accompanying section. of the tyre and its junction with the wheel, will sufficiently showthe form of the grooves and projections. The dark portions re-present the zinc or other easily-fusible metal with which the spacesare filled. Locomotive En-gines.—GEORfjE IIeaton-, Birmingham, engineer,has obtained a patent for •^ Improcements in- locomotive November 9,1847 ; Enrolled May 9, —The object ofthis invention is to prevent the oscillation of locomotive engines onrailways ; and the patentee endeavours to effect tliis by the appli-cation of counter-balance weights, moving in an opposite directionto the pistons of the cylinders. The mode of applying these counter-balance weights is as follows :—On each end of the axle of thedriving-wheels is placed a crank, to which is united a connecting-rod attached at the other end to the counter-balance weight, wliicliis suspended between two rods, so as to swing read
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Keywords: ., boo, bookcentury1800, booksubjectarchitecture, booksubjectscience
