220 Improved Capstan and Windlass . 
on which it fids ; as it does finally on the top. The top 
gallant mast H is fixed to the top mast F by the top and 
cap in the usual manner. The figures 2 and 3 show the 
caps separated from the masts* and are the only things 
necessary to be made for the purpose ; and the object of 
the cap* fig. 3* is to steady and prevent any wringing of 
the lower jury mast* and to fid the top mast whenever it 
is reefed. The fore top mast F F* in fig. 1* appears 
in two separate pieces* on account of its length. In the 
proposed method of securing the shrouds of ships in ge- 
neral* I represents the screws with loop holes for the 
shrouds to be lashed to* and K the screw nuts* which 
by means of a proper wrench may be easily turned* so 
as to tighten or slacken the shrouds at pleasure. The 
other side of the ship is shown fitted up in the common 
way* that the contrast may be observed. 
Fig. 1 is the jury mast unrigged* and fig. 5 is a side 
view of the mast and rigging* in which the same letters 
refer to the same parts. 
No. 30. 
Description of a Capstan * that works without requiring 
the Messenger or Cable coiled round it to be ever 
surged . By J. Witley Boswell* Esq. of Clifford’s 
Inn.* 
Sir — I request you will lay before the Society of Arts* 
&c. the model of a capstan contrived by me* which works 
without requiring the messenger or cable coiled round it 
to be ever surged* an operation necessary with common 
capstans* which is always attended with delay* and fre- 
quently with danger. 
* Nicholson, vol. 21, p. 133. From Trans, of Soc. of Arts, vol. 25, p. 65 
For this invention the gold medal was voted to Mr. Boswell. 
