Method of securing decayed timbers. |(21 



B B, the templets or wall-plates on which the girder refts, Eaty method of 



C C C C, one of the iron levers for raifing and fupporting [i^''J^"3^i^\"f,J* 

 the girder (there being a fimilar one on the oppofite fide.) jng,^ &c. 

 This lever is moveable on a pin D, which comes through a 

 hole in the lever, diftant about two feet from tHe end of the 

 girder. This pin forms part of a collar E bedded in the girder. 

 The lever is fix feet long, three inches wide, and three fourths 

 of an inch thick, and extends from the walUplate along the 

 fide of the girder. 



The extremity of the lever is moveable on another pin F* 

 projedling through it from an upright iron G, bedded in the 

 fide of the girder, and carrying a nut and fcrew, which ad 

 on a crofs plate H, through which the upright iron pafles. 



At the other end of the lever, next the templet, is an iron 

 collar I, bedded in the girder, which collar may be raifed or 

 lowered at pleafure, by means of the nut and fcrew K, form- 

 ing part of it ; and by aid of the cap-plate L, which prefles 

 upon the lever, and alfo clafps it to the girder by its bend at L. 



As Plate IX. Fig. 2, (hows only one fide of the girder, and^ 

 as has been before obferved, there being alfo a fimilar levei 

 on the oppofite fide of the girder, their feparate parts, method 

 of conneding them, and their mode of adion, are more fully 

 explained m Plate Y\\. Fig. I, 2, 3, where the fame letters 

 are made ufe of to point out the feveral parts. 



Fig. 1. — E, fhows the whole of the collar to be bedded in 

 the fide and bottom of the girder, and the pins D D, on which 

 the two levers are moveable. 



Fig. 2. — The cap-plate H, the two upright irons G G, with 

 their nuts and fcrews, which aft upon the extremities of the 

 two levers by means of their pins F F. 



Fig. 3. — The collar I, on which that end of the girder next 

 the templet refts, the fides of which collar are bedded in the 

 girder. C C are the claws or bended legs of the two levers 

 which go into the templet. L is the cap-plate, K K are the 

 nuts and fcrews. 



At Mr. Legg's houfe, where the levers above mentioned 

 were applied, the beams of the roof were fo decayed that the 

 roof was in imminent danger, the bearings were entirely rot- 

 forms Plate VII. of ourprefent number. The other unfortunately 

 was negle6Ved to be fent to the engraver's, and the miftake not dif- 

 <cpv.ered till too late. It will be given in our next. 



