. NEW FIELD GATE, £7 



gate, the two white circles near the hanging-poft reprefent Particular de- 

 the places of the two hooks when brought to the fame hori-^"^Pj|^"^^j^^j^^^ 

 zontal line ; tliat neareft the gateway reprefents the place of ing a gate. 

 the upper hook. A line drawn through the middle of thefe 

 two circles, and extended each way, will, on one handi re- 

 prefent the gate's natural line of refl, and, on the other, the 

 line of its higheft elevation. A gate thus hung will, when 

 thrown open nearly to the line of its higheft elevation, return 

 to the falling-poft with a velocity fufficient to refifl: a mode- 

 rately flrong wind. This velocity will be either increafed or 

 diminiflied, accordingly as the upper hook declines more or 

 lefs from a pofition perpendicular to the lower hook. In order 

 to adapt the thimbles to thefe hooks; — as the lower hook is 

 one inch and a half farther from the gateway than the upper 

 hook, the lower thimble muft have its eye an inch and a half 

 farther from the heel of the gate than the eye of the upper 

 thimble, in order that the bars of the gate may be in a hori- 

 zontal polition when it is fliut. And, as the upper hook pro- 

 jeds half an inch lefs from the hanging-pofl: than the lower 

 hook, the upper thimble fliould be fixed half an inch nearer 

 the farther fide of the heel of the gate than the lower thimble, 

 in order that the gate may be In a perpendicular pofition when 

 fliut. If the thimbles have firaps embracing the heel of the 

 gate, and proceeding a few inches along each fide of the bot- 

 tom and top bars, and if they are fixed to the heel bars and 

 braces, by means of iron pins and fcrew nuts, great firmnefs 

 will be given to the gale at thofe two points, which are thofc 

 that fufFer the greateft firains. 



Mr. Edward Simpfon of Wooden Croft Lodge, near Barnard 

 Cafile, in favour of the advantage of thefe gates in faving and 

 durability ; and alfo a letter from Mr. T. N. Parker, author 

 of a well-known Treatife on the hanging of Gates, exprefling 

 bis apprebation of the fame. 



Defcription 



