110 



Premiums in Mechanics. 



primers, by persons of either sex ; the gold 

 medal. To be produced to the Society on or 

 before the second Tuesday in January, 1805 ; 

 the pattern to which the premium is adjudged 

 to remain the property of the Society. 



151. For the next in merit ; the silver 

 nredal, on similar conditions. 



155. COPPER-PLATE PATTERNS FOR C.\- 



i.rco-PRiNTH?s. For the best pattern, in a 

 new style, hi for ihe purposes of calico-primers 

 for garment-work ; the silver medal. To be 

 produced to the Society on or before the second 

 Tuesday in January, 1805. The pattern to 

 which- the premium is adjudged to remain the 

 property of the Society. 



PREMIUMS IN MECHANICS, 



156. GuNr'owDFn-Mu.i.s. To the person 

 who, in. the year 1801, shall invent and brine 

 to perfection the most effectual method of so 

 conducting tl>e works of gunpowder-mills, in 

 the business of making gunpowder, as to pre* 

 vent explosion ; the gold medal, or one lnm- 

 ffred guineas. Certificates and accounts of the 

 laetbod having been put in practice in one or 

 tioye gunpowder-nulls in this kingdom, and that 

 it promises, in the opinion of the best judges 

 esmcemed in such works, to answer the pur- 

 pose intended, to be produced to the Society on 

 cr before tire iirstTuesdayinFeb. 1805. 



,\\K As an encouragement to persons to 

 tr,rn their thoughts to improvements of this na- 

 ture, if any should be made on the present 

 iaethnd oi conducting the business of gunpow- 

 der making, which tall short of thfc total pre- 

 *evwion oi explosion, mid they are sent to the 

 Society for the sake of humanity* the papers so 

 sent in will receive due consideration, and such 

 foouiitv or reward will be bestowed thereon as 

 they appear to merit. 



157. Transit-Instrument. To the per- 

 s-m who shall invent and produce to the Society 

 a cfteap and portable transit-instrument, which 

 »*av easily be converted into a zenith-sector, 

 capable of being accurately and expeditiously 

 ■iluMtuT. fof the purpose of finding the lati- 

 tudes and longitudes of places, and superior to 

 ai>r portable transit-instrument now in use • 

 Jfie ™dd medal, or forty guineas. To be pro- 

 duced on or before tl*» last Tuesday in Jan. 1 .805. 



158. T\nsdWini!s ijy tiii; QoN-HsRr 

 too\. To the person who, in the year 1801, 

 shail strike the greatest number of whales, not 

 fewer than three, with the gup-harpoon ; ten 

 guineas. Proper certificates oft he striking. such 

 whales, and that they were actually taken in 

 the year 1801, signed by the muster, or by the 

 mate when the claim is made by the master, to 

 be produced to the Society on or before the last 

 Tuesday in December, 180 I. 



159. Fa m it y Mill. To the person who 

 shall in veal and produce to the Society the best- 



constructed mill for grinding corn for the use 

 of private families, or parish-poor ; the cons- 

 truction to be such as to render the working of 

 the mill easy and expeditious, and superior to 

 any hitherto in use ; the gold medal, or thirty 

 guineas. The mill, and ceitijicates of its having 

 been used to good effect, to be produced to the 

 Society on or before the first Tuesday Jin Feb, 

 1805. Cheapness and simplicity wili be con*- 

 sidered as, essential parts of its merit; and the 

 mill, or the model, to remain with the Society. 



160. Machine foe raising Coals, Ore- 

 &c. &c, To the person who shall invent a 

 machine for raising coals, ore, cic, from mines, 

 superior to any hitherto known or in mo, and 

 which shall produce the effect at a less expense 

 than those already known or in use ; the gold 

 medal, or fifty guineas. A model of the mar 

 chine, made on a scale of not less than one inch 

 to a foot, with a certificate that a machine at 

 large on the same construction has heen advan- 

 tageously used, to tee produced to the Society 

 on or beioie the second Tuesday in Feb. 1805 . 



161. Improver Walking-Wheel or 

 Crane, To the person who shall invent an 

 improved walking-wheel or crane, on which 

 the weight and power of any person or per? 

 sons .shall be applied with the greatest safety 

 and efFcct, and SO contrived that the power can 

 be varied according to the greater or lesser 

 Weight to be raised or lowered ;. the gold me- 

 dal, or thirty guineas. The model, on a scale 

 of not less than one inch to a foot, with a pros- 

 per certificate that the machine at large has 

 been employed to good effect, to be produced 

 to the Society on or before the secpnd Tuesday 

 in February, 1805. 



16^2. Machine for Praising Water. 

 To the person who shall invent a machine on a; 

 better, cheaper, and more simple construction 

 than any hitherto known or in use, for raising 

 water put of wells, &c. from a depth of not 

 less than fifty feet ; the gold medal, or forty 

 guineas. Certificates of the performance of 

 the machine, and a model of it, on a scale oi 

 not less than pne inch to a foot, to be produced 

 to the Society on or before the fyrst Tuesday in 

 February, 1805. 



163. * Elm Pipe?. To the person who shaft 

 invent and discover to the Society a substitute 

 for the elm pipes now in common use for the 

 conveyance of water, which shall be cheaper^ 

 equally effectual, and more durable than any 

 heretofore employed ; the gold medal, or 

 thirty guineas. It is required that one of the 

 pipes so employed, an accurate account of the 

 method used, and every expense attending it, 

 together with satisfactory accounts pf its being 

 effectual, be delivered to the Society on or 

 before the secpnd Tuesday in January, 1805. 



164. Extinguishing Fires. To the person 

 who shall produce to the Society the best ancf 

 most effectual method of procuring an immc-t 



