from Dragging on Carpets. 41 9 



Reference to Mr. Tad's Method of preventing Doors from 

 Dragging on Carpets. See fl. XIII. Figs. 1, 2, 3, and 4. 



Mr. Tad's invention consists in first cutting away the bot- 

 tom of the door, so that it is about one inch and a quarter 

 above the floor; this allows a sufficiency of room for the 

 door to open over any carpet. To close the opening which 

 would now be left under the door when shut, he proposes 

 to fix beneath the door, by means of hinges, a slip of wood, 

 of which a bde, figs. 2 and 3, Plate XIII. is a section. Fig. I 

 is a perspective view of the bottom of a door, with the 

 invention annexed to it ; fig. 2 is a section across the door 

 when closed ; fig. 3 is a view of the edge of the door when 

 open ; and fig. 4 is a section supposed to be made by cutting 

 the door in two parts, edgeways. The hinges, oh which 

 the slip turns, are fixed to the edge. In figs. 2 and 3, from a 

 Xob, is exactly one inch and a quarter, so that when the ruler 

 is turned down upon the hinges, it reaches the floor A A 

 as in fig. 2 ; in the other direction a d it is much less, being 

 only half an inch, so that when it is turned up under the 

 door, as in fig. 3, it leaves three quarters of an inch clear of 

 the floor. It now remains to show how the ruler is turned 

 up or down : — it has always a tendency to rise up into the 

 state of fig. 3, by the action of a steel wire spring, shown 

 in figs. 2 and 4, which is concealed in a rebate cut in the 

 bottom of the door; one end of the wire is screwed fast to • 

 the doof at f) the other is inserted into an eye fastened into 

 the slip at g, to throw it down into the position of figs. 2 

 3nd 4. The end k, fig. 4, of the slip furthest from the 

 hinges of the door, is cut into a semicircle, as seen in 6g. 3. 

 When the door is just closed, this semicircle is received 

 into a fixed concave semicircle k 9 fig. 3, cut in the end of 

 a piece of wood k Z, made fast to the door-case ; the line m /, 

 fig. 3, represents the plane of the door when shut, and p p 

 part of the door seen edgeways : as the door in shutting 

 moves from p to m, the semicircular end of the slip aide 

 presses against the end of the piece k l y and as the door pro- 

 ceeds, it turns down as in fig. 2, so that by the time the door 

 is shut, the slip is turned quite down; the edge e b of the 



Voi. 33. No. 134. Jane 1805. * F f aHp 



