JQ IMPROVEMENT IN THE GXJN-LOCK; 



manner. The intent of this invention is to guard againft the" 

 cafualties which arife when fire-arms are left loaded, or the 

 misfortunes which frequently happen from twigs of trees or 

 bufhes catching the trigger when Iportfmen are paffing 

 through hedges. 



I hope it will meet the approbation and encouragement of 

 the Society, and am, 



S I R, 



Your humble Servant, 



JOHN WEBB 



Defcription of Mr. John Webb's Gun-Lock, Plate 1 \ Fig. 1, 

 2, 3, 4, 5. The letters of the fever al Figures correfpond 

 together in the general Defcription. 



Defcription of A is the cock — B, the hammer — C, the main fpring— 

 the lock. D , the tumbler— E, the large fear— F, the fmall fear— G 



the fear faring — H, the (hank or arm of the large fear — I, 

 the thank or arm of the fmall fear — K, the thumb-piece — L, 

 the trigger — M, the lever of the thumb-piece — N, thefpring 

 ■which holds the thumb-piece up, when not prefied upon by 

 the thumb. 



Fig. 1, is an interior view of the lock at full cock. 

 Fig. 2. — The fame lock at half cock. 

 Fig. 3. — The lock when down. 



Fig. 4. — The lock fixed in the gun-Hock, in order to fhow 

 the thumb-piece K and the trigger L, with their mode of 

 adion. When the gun is held cocked in the ufilal manner, 

 ready to fire, and the trigger L is pulled by the finger, the 

 thumb, being piefTed at the fame time on the piece K, raifes, 

 by means of the lever M, moveable on a pin in its centre, 

 the thank I of the fmall fear, and admits the cock to give 

 fire as in the common way ; whereas, if only the trigger L 

 is pulled, the lock flops at the half cock I ; further motion 

 being prevented by a notch in the fmall fear. A fpring, N, 

 Screwed to the ftock, returns the thumb-piece to its place, 

 when the thumb is taken off*. 



Fig. 5 (hows, on a larger fcale, the conftruclion of the 

 tumbler, large and fmall fears, the fear-fpring, and the 

 manner in which they rife out of the bents of the tumbler. 



VI. Defcription 



