Patents tatcty Enrolled. 



4S , 



JDg of ovens, by snnoundinij tliem with 

 liues, acted upon bj the apparatus. It 

 may also be used for heatinsj drjiug 

 loouis, irianuractorieSj grcen-liouses, and 

 liot-lioiises. 



The ventilator, ^vit!l0ut tiie air-pump 

 er pneumatic ruacliine, is a cure for 

 wnoky cliimnies, and is formed of a tube 

 x)f metal, burnt earth, or other suitable 

 inateriiti ; its ojjening or dinmetcr is pro- 

 portioned to the dimensions of the ciiim- 

 jiey, and it may be fixed in tijc usual 

 method of placing a common chinmey- 

 pot ; or where there is a pot already lix- 

 ed, it may be placed on the top of the 

 jiot, around and close adjoinin;^- to the 

 t'dgc of the tube. Upon its summit 

 there is a plane of between forty and fifty 

 denrces of inclination, so that the air 

 striking' upon it from any quarter of the 

 whid, is carried off in an obli(|uc direc- 

 tion over the opening, by whicli means 

 the prcysiirc of the atmosphere beina; re- 

 moved from o(i' tiie colunm of air in the 

 flue or cliinniey, a current of air is drawn 

 through the tine or chimney into the 

 ©pen air. A similar inclined plane, but 

 <:loscd at the top, is fixed at a convenient 

 distance above the first, which, ternii- 

 jiatuig in the form of a cone, i)rovents 

 any eddy winds liom coinitcracting the 

 cflect of the lower j)lane. This upper 

 plane may be placed or not, as circum- 

 stances or situation may require; and the 

 distance between the two jilancs, when 

 fcotli sliall be used, is also to be deter- 

 mined by the locality ; when there is a 

 range of tlucs iu one stack of ehimnies, 

 two or more of those flues m;t^ be united 

 in the same ventilator. His method of 

 ■^varming air or li(juids, which is particu- 

 larly applicable to the purpose of evapo- 

 lation, in order speedily to obtain the re- 

 siduum, or the crystallization of any 

 matter suspended in li(juids, and which 

 admits of the use of various sorts of ma- 

 terials for boilers, as wood, brick, or me- 

 tal, is, by means of a moveable or fixed 

 apparatus, either with or without the ap- 

 plication of the air-pump or pneumatic 

 machine, and, by the application of the 

 reversed tlame, immersed in the liijuid. 



'J'he furnace which he employs, for 

 Leating boilers of all descriptions, as 

 well as far warn)ing air in churches, pri- 

 sons, hospitals, dwelling-houses, «kc. is 

 another application of the reversed tlame, 

 and is described as follows : — 1 he fuel is 

 lod""ed on a heap of lire-bricks, disposed 

 ill such a manner, in a flue of the same 

 or other suitable materials, as to suffer 

 the air to pass freely between them, 

 lieucath these bricks is placed a small 



[Aug. 1, 



grate, for the purpose of receiving and 

 consuming any part of the fuel which 

 might fall through the space leit between 

 the bricks. This grate is furnished with 

 an opening, for the purpose of cleaning 

 the ash-hole or lighting the lire, iu case 

 the air-pump be not used. This opeii- 

 ing is also calciUated to admit fresh air, 

 to consume what may remain of th« 

 fuel, as well as to burn the gas, which 

 may have escaped combustion in its de- 

 scent through the mass of bricks, which 

 are placed upon an open arch of the 

 same or other proper materials, so as to 

 support the fuel on their summit. ^V'heu 

 the air-pump or pneumatic machine is 

 used for the i)urpose of forcing a cur- 

 rent, the superlices of the object to bo 

 heated may be augmented to any ex- 

 tent, and the whole of the caloric pro- 

 duced by the fuel may be employed 

 either on tlie liquid or on the air to ba 

 heated, as part of it being wanted to form 

 a current in the flues or ehimnies. His 

 method of cooling air is by means of the 

 air-pump and ventilator before de- 

 scribed, either jointly or separately, 

 causing the air to pass through a cool 

 niedium. 



Other Palcnti lately granted, nf which we 

 suUcil tiie Specifications, 



William Lewis, of Brimsconib, Glou- 

 cestershire, dyer; fcr a machine for ful- 

 linjr woollen or other cloths, that require 

 such process. — April 5. 



JosephTurnkr, of Layton, Yoiksliire, 

 nipchaiiic; for an improved rotatory engine, 

 and application thereof, with or without 

 other niachiuery, to useful putposes. — 

 April 3. 



John Woodhousb, of Broiiisgrove, 

 Woicestersliire, civil engineer; for a ine- 

 tliod of forming the ground for roads and 

 pavements, and aho for paving and repair- 

 ing old pavements and •cad''. — April 9. 



VVn.LiAii Atkinson, of Ceutinck-street, 

 architect; fur a method or methods of 

 forming blocks with bricks and cement in 

 the forii) of aslilnr stone, for bitilding, so 

 as to have the appearance of stone. — • 

 April 9. 



WiiiiAM Stenson, of Coleford, Glou. 

 cesttrsliiie, en<;ineer ; for au improved en- 

 gine, 10 he worked by steaui, or any other 

 power. — April 9. 



William Lassalle, of Bristol, apo- 

 thecary ; lor a nietliod or contrivance for 

 an improvement in the conslriiction of a 

 gig, and of cards, so called iu the clolhing 

 and other niantifaetoncs, or other ma- 

 chines or insimmeiits nscd and employed 

 in sueh manufactories for the same or 

 siiiii'ar purposes, a contrivance never be- 

 fore put iu uraclicc. — April 23. 



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