1842.] 



THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. 



427 



AINSLIE'S PATENT BRICK AND TILE MACHINE. 



Th's Machine is Don- being exhibited at the "Pin Manufac- 

 tory," in the Borough Road, Southwarlv j it is applicable for 

 making Tiles of different sizes, and likewise Bricks; of almost 

 any shape, by simply shifting the front pliUe of the lower box. 

 It is altogether different from any other machine that^has" 

 hitherto come belbre the public. The articles made by it are of gf] 

 t he bes t description, as the clay is in no way strained (as in'Sj 

 some other machines, by turning the clay from a flat to a curve) 

 hut is in fact pressed through the moulds in an equal and re<nilar — 

 manner, leaving the top as well as the bottom of the°tiles^ 

 equally solid, substantial, and far more durable, reqiiirirTS^less" 

 fuel to bum them than in the ordinary mode of manufacture. 

 One of the machines has been erected for the MarquirofTIo^ — 

 thian, and appears from the following extract to ans'wFr the^ 

 purpose.—'- Amongst the machines recently introduced for"th~ 

 manufacture of drain-tiles, that under the patent of iMr.^AinslieT* 

 Redheugh, Mid -Lothian, stands pre-eminent, whether as regardsThe amount 

 of Its production, or for the quality of the article which it produces. There 

 is a directness in the principle un which tiles and bricks are formed by this 

 machine, that gives them at once greater solidity and soundness of texture 

 than any process hitherto adopted. * " « Tiles of any size, from 

 a 9 m. main-drain down to the smallest conduit, can be made by this ma- 

 chine, at rates varying from 14 large mains to 36 small conduit-tiles per 

 minute, or from 8000 to 20,000 per day.' ~Sl,-plm,s- Book of the Farm, No. 7, 

 p. 581. 582. 



The following description of the machine, furnished by the ingenious in- 

 ventor, H ill explain its action and utility. 



In consequence of the rollers being'near to each other, little more than 

 one quarter of an inch apart, every obstacle, such as stones and other hard 

 substances, are crushed to powder, in their progress down«ard. thereby 

 giving proprietors of clay fields the power of manufacturing tlieir own tiles, 

 even though the clay should be of an inferior quality. 



Immediately below the centre of the rollers is placed a cylinder lying 

 Iwrizontally, with an opening U in. wide on tho top, through which the 

 clay enters; and on each side of the opening is placed a scraper to clean the 

 rollers and duct the clay into the lower cylinder. In the latter cylinder there 

 is a powerful double spiral screw which revolves, the threads are about 7 in. 



GILLOT'S PATKNT FOR HEATING AND VENTIL.\TING. 

 Fig. L Fig. 2. 



A. The Stove. The door of the (Ire- place opens on the opposite side. B. 

 the Box containing the Fan. C. The Pulley on the spindle to »hich the 

 fan is attached, over which p.asses a strap leading to D. the Fly Wheel, the 

 turning of which sets the fan in motion, and drives the air tbroiigh the 

 cocl^le. Fig. 2. placed at G G, Fig. 1. and the air is carried through E, the 

 delivering pipe to any part required. F. The chimney either ascending or 

 descending. 



This apparatus for heating and ventilating, may be seen in use at No. 1, 

 Liverpool -street, Finsbury. The fite-place is similar in construclion to ordi- 

 nary hot air stoves, over which is placed a cockle, sec Fig. 2. through the 

 vertical spaces. A A. in «hich llie fire jiasses. and the air, by the rcvid\ing 

 of llie fans, is driven through the intermediate spaces, B B, into the delivering 



j apart, consequently whilst the rollers force the clay in a perpendicular di- 

 rection througli the opening into the threads of the screw, the screw forces 

 the clay horizontally into the chamber in front of it. for holding the mass of 

 clay into which the screw empties itself. In front of this chamber, a plate 

 with nioidds is screwed, so that when the chamber is charged, the overplus 

 is forced through the moulds from the mass of clay in a continuous stream, 

 on to an endless cloth, which moves the moulded clay forward to the cutting 

 frame, consisting of two endless chains inclining a little from the perpendi- 

 cular, to which, two wires are attached horizontally by hooks ; these chains 

 are moved by a belt to the shaft of the first roller of the endless web, 

 to suit the speed of the clay, and is kept constantly revolving, so that the 

 wires divide the clay, during the continuous movement of the new moulded 

 tiles, which are then pushed forward by the uncut clay over small rollers, 

 till they reach another endless web, from which they are taken. 



In order to prevent breakages, a strong friction hoop is placed upon the 

 driving shaft of the machine, which is screwed up, till it puts the machine 

 in motion. .Suppose either by accident or intention, iron or any other hard 

 substance was thrust into the machine, this friction hoop will yield to the 

 strain of such a substance, thereby causing the machine to stand still, till 

 the obstacle is removed. When the clay is very irregular, a pug mill is re- 

 commended to feed the machine. 



pipe, E, Fig. 1. Tlie purity and quantity of the beat produced by this appa- 

 ratus, must be witnessed to be believed ; the air is driven with such velocity 

 through the cockle, that the oxygen is not destroyed, as is the case, more or 

 less, in all self-acting hot air stoves. The quantity of heat to be obtained 

 is limited only by the size of the apparatus used, and the number of revolu- 

 tions of the fan ; any budding, however large, can easily and speedily be 

 warmed ; in fact, this apparatus is capable of effecting all that can be desired 

 for warming churches, all large public buildings, drying corn, rew buildings, 

 and manufactories of all kinds, where heat, with perfect safety and economy 

 is required. It is not necessary that the apparatus should be upon the pre- 

 mises, but the heat may be conveyed into any factory or building, by trunks 

 or pipes. 



PATENT STUCCO PAINT CEMENT. 



In a former number we slightly alluded to this new cement, deferring until 



we had an opportunity of examining into its qualities, to recommend it to 



the notice of the profession, which we are now enabled to do, after having 



carefully investigated its properties, and examined several samples of the 



cement, at Messrs. Mann's, Maiden-lane, in the City. It appears to be a 



cement possessing superior qualities, and to be well adapted for external 



works, particularly in exposed anil damp situations, such as on the sea coast, 



and south-western aspects. At Plymouth. « here the cement is manufactured 



by Messrs. Johns, the patentees, and where the principal ingre.lient is obtained, 



it has been tried for the last three years, and subjected to the most rigid tests 



with perfect success. Its strong adhesive properties cause it to adhere to 



almost any substance ; specimens may be seen on glass, wood, slate, tile, and 



brick. The nature of the materials of which the cement is composed, renders 



it highly repellant of water, and impervious to wet or damp. It is sold in a 



semi-liquid stale, w hich has the appearance of white lead ; and when used it is 



mixed with three times its weight of sharp sand, to the consistency of mortar, 



and laid on the wall with a trowel m the same manner as cement, and with 



about the same labour. It is finished oil at once, with either u fine or a 



coarse Coat, as may bedesired; itdries gradually, an.iin two or three days time 



the surface becomes as hard as stone, to which it lias all llie appearance, 



without colouring. It may likewise be used for interiors, and painted over 



