Conditions relating to Machinery. xxxv 



Chaff cuttins; and other small machines, worked usually by horses and by 

 steam power, will be worked when under trial by a pulley not less thaia 5^ 

 (that is, five and a-half) inches wide, moving with a velocity of, or about, 

 900 feet per minute. 



Exhibitors are requested to pay particular attention to the instructions given 

 for the speed and working of their machines, as the Judges may refuse to try 

 any machines not fitted in accordance with these instructions. 



The working pressure of steam not to exceed 80 lbs. and 50 lbs. per square 

 inch, in accordance with Condition 5. 



Special Arrangements. 



The Judges will be instructed to employ in the trial of the steam-engines, 

 as a test of power, an apparatus known as a force-register, such apparatus 

 consisting of a friction-break, to supply and I'egulate the friction required to 

 balance the power of the engine under trial. 



2. At a distance of about 34 feet, or such other distance as the Society's 

 Engineer may determine, a platform will be laid down, upon which the 

 boiler of the Society may move in a direction perfectly parallel with the 

 friction-break. 



3. Each fixed engine must be placed in such a position by the Exhibitor as 

 to require a driving-strap of such a length as the Society's Engineer may 

 determine. 



4. Each Exhibitor must provide his own driving-strap, which shall be of 

 the required length. 



5. Each fixed engine will have attached to it a steam-pjipe, the end of which 

 must be at a given distance from the centre line of the boiler platform, and be 

 provided with a union of such dimensions as the Engineer of the Society may 

 determine, each being cut with the same screw ; and it must be at a given 

 height from the boiler platform. 



I 0. A short piece of flexible pipe, capable of sustaining the temperature and 

 an . pressure of 50 lbs of steam to the inch, for the purpose of forming a 

 simple and ready communication between the boiler and the engines, will be 

 provided by the Society, 



7. To insure all these points being fully adhered to, a lithograph plan and 

 section, showing the exact position of shaft, diameter of ]uilley, and a friction- 

 break, and also of the boiler, with the end and height of the steam-pipe figured 

 with the exact dimensions, will be supplied to Exhibitors on application to the 

 Secretary. 



8. As soon as the Exhibitors shall have complied with the conditions required 

 of them by the Society to entitle them to exhibit, the order of trial will be 

 fixed by ballot, taken by the Stewards in the first week of July, and the 

 ordinal number assigned for the trial of each engine will be forwarded to each 

 Exhibitor. The Exhibitors will then place their respective engines in the order 

 thus assigned, beginning at one end with the engine drawn by ballot No. 1. 

 To enable this to be done effectually, each Exhibitor will be required to specify 

 the width or space which his engine will occupy for trial. 



9. All the engines intended to be tried must be fixed by a given time — 

 namely, by 8 p.m. on Tuesday, the 9th of July, and strictly in the position 

 and under the conditions required; if not, the Judges will have the power of 

 declining the trial, and of having the engines removed from the yard. 



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