s 



THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. 



Jan. 



them Jo not require [to be set in gold. We have Sir William Cell's 

 authority, than whom no one h;id a better opportunity of studying in- 

 ternal decoration as practised by the ancients — that the suggested 

 innovation would be in accordance with the principles of those whom 

 we profess to follow and admire. 



If the space taken up by frames at the Royal Academy were occu- 

 pied with some quiet separating colour, the pictures being snrrouuded 

 with simply a gold moulding, we should not hear so many complaints 

 of the killing effects of the exhibition to all pictures that are not painted 

 after Turner's manner. Gold in large quantities will some day as- 

 suredly be banished from the picture gallery, to situations where it is 

 required as an architectural decoration, and where it will therefore be 

 subjected to the disposal of the architect instead of to that of the 

 frame maker. 



J L. 



AN APPARATUS FOR DISCONNECTING THE PADDLE 

 WHEELS OF STEAM VESSELS FROM THE ENGINES. 



By Mr. Grantham, North Foundry, Liverpool. 



To effect the connection and disconnection of the paddle shafts of 

 steam vessels, has been the subject of many ingenious plans, but we 

 have not seen any which ap))ear better calculated for this purpose 

 than that of Mr. Grantham, a description of which we now give. 



The parts of the annexed diagram marked 1, represent the paddle 

 shaft of an ordinary marine engine, 2 the intermediate shaft, and 

 3, 3, 3, the cranks by means of which the engines are made to revolve. 

 This new contrivance consists in having in the eye of the exterior 



crank, a sliding brass step A, which may be moved in either direction 

 by the screw C. The screw to be worked by a ratchet spanner on the 

 square end F, and to be of such pitch that one revolution for small 

 vessels, and two for larger vessels, will be sufficient to effect the ope- 

 ration. 



The sides of the brass step project unequally, as at G and H. 



For Disconnuliiig. — The brass step is drawn back by the screw C 

 to allow the crank pin to pass clear. 



For Coniitcting. — The brass step is moved forward [one' or two 

 inches, so that the crank pin can pass the side G, but comes in contact 

 with H. The correct position of the several parts being thus deter- 

 mined, the brass is screwed out to its full extent. 



TILE MACHINE. 



J\'ew Patent Invention for the Manvfadare of Draining and other Tiles and Bricks. By William Irving. 



The advantages of the machine exhibited in the annexed engraving are its simplicity and cheapness in its construction and working. It is 

 stated by the Patentee that by the labour of one man and three boys, 5000 tiles per day can be made with ease, at a cost of less than 28. 

 per 1000. At one operation IG tiles are made, which an experienced hand would accomplish in one minute, equal to 9,(300 per day of 10 

 hours. 



The machine is so portable that one man can carry it, and needs no fixing. 



The machine may be seen at work at Richmond Wharf, Nine Elms, London, every Monday afternoon. 



The process of making tiles by tins machine, 

 is as follows : a quantity of material sufficient 

 to fill the box, or mould, is thrown in as in 

 the ordinary process, and the surplus cut off 

 even with the top, by a scraper of any con- 

 venient form or material. Tlie end DD, and 

 the frame or hoop FF, are then removed, and 

 the workman (who stands at the end Z of the 

 machine) takes the cylinder U H by the 

 handles, and raising it up vertically, rests It 

 upon the top of the box, or mould, with the 

 rings, or guides a a npon the said cylinder 

 outside, or against the outer face of the sides 

 B C, thereby causing the wires attached to the 

 cylinder H H to be brought against the face 

 of the material left exposed by the removal of 

 the end D D. The cylinder H H is then 

 drawn along the top upon which it rests, and 

 the wires are made to pass through and cut 

 the material into the required number of tiles, 

 according to tlie arrangement of the wires 

 upon the saiil cylinder II H. The wires arc 

 thus brought through the material to the cuts 

 or openings in the end E K, and over the rol- 

 ler L L in the grooves of which they are re- 

 ceived and left. 



The material being now completely separated into the required number of parts, the side D is laid down ui)on the table or bench A A (which is made 

 wider at that end to receive it), the board G G, with the material upon it, is drawn out between the guides J J, and the tiles are taken to be horsed or other- 

 wise, as may be expedient. 



