436 PAINTING OF PAPER HANGINGS. 



Mr. John Middletou lately communicated some improvements ia 

 the printing of paper-hangings, to the Society of Arts. They are 

 intended to facilitate the conveyance of the paper over the print- 

 ing. table, and to give a greater pressure than usual to the block, 

 when printing dark grounds. 



To facilitate the conveyance of the paper, two cords 36 feet 

 long, are stretched from the printers table to the other end of the 

 room, through rings, where they are kept tight by a weight ap. 

 pended to their extremities. The paper to be printed is rolled up 

 on a wooden roller at one side of the table, and its ends brought 

 across the table, and fastened between two flat ledges that are con. 

 nected at one end by an hinge, and at the other by a sliding ring ; 

 these ledges slide along the two cords on pullies placed at each end 

 of them, and serve to draw forward the paper as it is printed ; from 

 the middle of these ledges a cord proceeds to the end of the room, 

 between the other two cords, where it passes over a pulley, aud 

 thence returns to a roller under the table ; the circle of this roller 

 extends beyond the table, and there has a wheel fastened to it, 

 from which projects three pins, each about four inches long, by 

 , pressing on which with the foot, the wheel is turned round, and 

 with it the roller ; by means of which, the paper is drawn forward 

 on the cords a space corresponding to the distance between the 

 pins in the wheel. 



The contrivance for giving an extraordinary pressure to the block, 

 consists of a long and a short lever, projecting from one side of an 

 axle, placed over head, above the printers' table, which levers and 

 the matters supported by them, are balanced by a weight appended 

 to an arm which proceeds from the other side of the axle ; from 

 the long lever a cord falls to the ground, where a treadle is attach, 

 ed to it : a long pole is jointed to the end of the short lever, and 

 descends from it directly over the place of the block, on which it 

 is made to press, by standing on the treadle whenever it is thought 

 proper, and is put out of the way when not wanted, by placing 

 the end of it behind a piece of wood, which projects upwards from 

 the back of the table for that purpose. 



[Pantologia. 



