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proportions will admit of considerable variations; and I do cause the same to unite by moderate boiling, and in this state I pour the same into moulds, to be divided into lengths, or squares, or cakes, or other fit proportions, for sale; and I do expose the said lengths, squares, cakes, or proportions, in a fit place or apartment, kept at a proper temperature for drying or evaporating the solvent or spirit, or a considerable portion thereof, in order that the density and consistence of the said soap may increase, and its parts become so intimately applied to each other, as to produce a beautiful degree of transparency. And, lastly, I do declare that in some cases I add a portion of sugar or saccharine matter to the mixture when a less degree of firmness is required; and that I do, as occasion may require, add such well-known materials as may be needful to give any particular odour, or scent, or colour, as may be thought or found most agreeable to the purchasers, and concerning which said materials no particular instructions are necessary, because I follow the usual practice in the use and application thereof, and do not consider the same as constituting any part of my said improve

ments.

In witness whereof, &c.

Aaa 2

Specification

1

Specification of the Patent granted to WILLIAM LEster, of Piccadilly, in the County of Middlesex, Engineer; for an improved rotary Motion or Engine to communicate power to Machines. Dated June 19, 1806.

With a Plate.

To all to whom these presents shall come, &c. NOW KNOW YE, that in compliance with the said proviso, I the said William Lester do hereby declare that my said invention is fully described and ascertained by the following description, and the drawings hereto attached.

AA, Fig. 1 (Plate XIV.) the shafts or levers to which the horses or oxen are yoked. BB cast-iron sockets in which the levers are fixed; in the centre of which is a female screw, Fig. 3, into which the male screw E works, which prevents the shafts dragging the horses forward when they stop suddenly, when it is attached to a machine that has great velocity. D a cylinder of castiron bolted to B, which is bored to receive the screw E, and turned to work in the cylinder C C, which is also made of cast-iron and bored, to which the step 10 is bolted to receive the toe of the screw E. FF a horned wheel, made of cast-iron, round which the rope or chain G works, also round the horned pinion H, which is cast on the back of the bevel-wheel, to give the vertical motion J. I a cast-iron chair, fixed upon the the portable tripod L. Ka horned wheel, working vertically, round which the rope O works; also round a horned pinion, which is fixed upon the machine, to which the power is communicated. L L portable tripods, which expand and contract to raise or lower the engine to the

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size of the horse; also to contract into less space, to facilitate its removal from place to place. M M six gages of iron, to prevent the legs of the tripods from flying out. NN a beam of timber, to keep the rope or chain tight, which is regulated by the holes 66. 12 the coupling brasses which fit in the chair I. 3 3 3 3 han- ́ dles to lift about the tripods. 4 4 4 4 4 4 iron spikes to prevent the tripods sliping. 5 5 5 5 bolts to which the legs are fastened to the chairs, and must be slackened when the engine is taken down for removal, and screwed tight before it is put to work. 7777 bolts that fasten the levers.

AA, Fig. 2, the shafts. D a cylinder to receive the screw-shaft as above, but cut off at 8, and cast hollow to receive the clutch end of the axis T. KK horned wheels, which carry the rope or chain O; one of which is fixed on the machine to which the power is communicated, and are varied in size in proportion to the ve→ locity required. PP a cast-iron chair, bolted to the beam of timber Q Q. R a foot that supports the screwshaft; the steel toe of which turns in the chair SS. V the tumbling shaft, on the end of which is fixed the clutch X, which greatly facilitates the hanging the wheels K K. 77 bolts that fasten the shafts A A in the boxes BB; the screw E working in the box D, which is bolted to B B, prevents the horses from receiving any injury by stopping suddenly, as the instant the impelling power ceases the shafts A A are at rest.

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