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"It is better for the interests of science that we rather go about it, not with a single candle, but
EDITED BY J. C. ROBERTSON.
MECHANICS' MAGAZINE Office, 166, FLEET-STREET.
DRY'S PATENT THRASHING MACHINE.
[Patent dated August 2, 1842.] The thrashing machine represented in the revolving beater-frame D, and thrown the accompanying engravings, though out into the vacant spac, H, behind. From but recently patented, and only just spe. the separate views (figs. 6 and 7) given
cified, is already, we are informed, coming of the revolving beater-frame, it will be • into extensive use in the North of Eng- seen that the triangularly-shaped beaters,
land. It is certainly, by far, the most &, are fixed to the frame at such an effectual, simple, and easily managed of angle, that when they come down upon any yet produced. Fig. 1 'is a side ele- the grain as it passes between the stationvation of the machine; fig. 2 is an end ary semi-cylinder B, and the revolving elevation; fig. 3, a transverse section, beater-frame D, they fall fatly upon it, through the line a b, of fig. 1, and fig. 4, and do not present their edges to break, a horizontal section, through the line cd, or cut, or otherwise damage the grain or of fig. 1. A A A A is the frame. straw. It will also be seen by reference work of the machine; B is a semi-cylin- to the separate view, fig. 5, of the semider, represented separately in fig. 5, which cylinder B, that the teeth on the inside is divided into two sections, B1 and B?, thereof are set at an angle to correspond each of which is suspended, independently with that at which the teeth of the reof the other, by eye bolts from the cross volving beater-frame D are fixed. The bolt C. Both sections present, on the
distance between the teeth of the stationinside, regular rows of teeth fff, of a ary semi-cylinder B, and those of the triangular form, supported by transverse revolving beater-frame D, may be made stays, or ties, f? f?; but in the upper wide or narrow at pleasure, according to section, the spaces between the rows of the sort of grain to be thrashed, and the teeth and the stays are closed; while, state as to dryness or wetness which it is in the lower, these spaces are left open. in, by the means next to be described. By means to be presently explained, both K (fig. 4) is a curved bar, attached by its these sections are made perfectly fixed two ends to the cross bolt C, from which and stationary, when the machine is in the sections of the stationary semi-cylinaction, and in that state they have the ap- der are suspended. L is a winch, one pearance of, and form, in effect, one entire arm of which passes through a bearing k, semi-cylinder. Dis a revolving beater- at the end of the frame work A A, and frame, shown separately in figs. 6 and 7, terminates in a male screw 1, which takes (the former being a bird's-eye-view, and into a female screw cut out in the head the latter an end view,) which carries of the curved bar K. M M are two bearrows of teeth or beaters, g g g, shaped ings in the slots m m, on which rest the similarly to the teeth, ff, of the station- ends of the cross bolt C. ary semi-cylinder B, and taking into the From the description, so far, it will be interstices between them. E is a pinion, readily understood, that as the winch is fixed on the end of the axis of the revolv- turned, and the screw end forced inwards, ing beater-frame D. F is a cog wheel, through the curved bar K, the cross bolt which takes into the pinion E, and which, C, to which the ends of the curved bar being connected by iis axis with any pri. K are attached, will be drawn back, and mary moving power, as horse power, or with it the two sections of the semi-cysteam power, gives motion to ihe whole linder B, suspended from it, and that the machine. G is a stage, or platform, from space between the opposite rows of teeth which the grain to be thrashed is laid by will be thereby proportionally increased, hand on an inclined feeding board G?, and vice versa. Now to keep the secwhence it falls between the teeth of the tions of the semi-eylinder B steady in any revolving beater-frame and those of the position, which may be thus assigned to stationary semi-cylinder. The grain, as them, and to preserve their parallelism it is thrashed out, falls through the open within the frame work, as also to allow interstices of the lower section B’ of the of the upper section being raised to the stationary semi-cylinder, and is received slight degree required when the cross on the foor of the machine, while the bolt C is drawn back, there are four diastraw is carried round by the action of gonal stays N N, two on each side,