554 



Report on the Exhihition of Imjjlements 



left the horse- works unnoticed. The importance of this point 

 will appear when the tabular statement (A) comes under con- 

 sideration. The trial commenced by a general examination of 

 each machine by the judges and consulting engineer^ after which 

 a single horse (and in some instances a second) was attached, 

 with a dynamometer, and the empty machine driven at such a rate 

 as, according to the maker's description, would cause the drum to 

 revolve at the requisite speed. After trying a few of the machines 

 it became evident that the specifications furnished by the makers 

 were not accurate, and it was found necessary to count the cogs of 

 all the working parts and calculate the number of seconds in 

 which the horse- wheel should revolve in order to produce the 

 number of revolutions of the drum intended by the exhibitor. It 

 is much to be wished that exhibitors would be strictly accurate in 

 describing their machines, as misstatements not only lead to great 

 waste of time and trouble in conducting the trials, but frequently 

 place a machine in an unfavourable position as respects other 

 competitors. To show the extent to which these inaccuracies are 

 carried, it is only necessary to mention that in the description of 

 one of the machines it was stated that two revolutions of the horse- 

 wheel produced 700 revolutions of the drum, whereas on calcu- 

 lation it was found to produce 1146, so that, had there been no 

 check to the exhibitor's estimate, he would only have had the 

 credit of making his drum revolve 700 times per minute, whilst 

 the dynamometer charged against him the amount of draught re- 



Table A. — Showing the Draught of the Horse and Barn Works of 

 Threshing-Machines when Driven Empty, as indicated by a 

 Draught-Gauge. 



Name. 



Horse 

 Power, 



Sparke . . , 



Holmes . . . 



Page . . . . 



Hurwood . , 



!':xall . . . . 



Burrell . . . 



Ferrabee. . . 



Cornish . . . 



Blyth . . . 



Woods. . . . 



Garrett . . . 



Hornsby. . . 



Hensman . . 



Ransome . . 



CrosskiU, . . 



Diameter 

 of 

 Horse- 

 Walk. 



21-5 



20 



18-25 



21-6 



22 



23 



20 



19-5 



22-3 



24 



2-2 



23-6 



24 



20 



24 



15 



3 



3 



2-45 



3-6 



2-5 



3-1 



3-5 



3 



2-79 



2-6 



2-14 



Revo- 

 lutions 



of 

 Drum. 



1-53 

 2-25 

 1-81 

 1-88 

 2-85 

 2'04 

 2-19 

 2-45 

 2-38 

 1-71 



2-18 

 2-20 

 1-83 

 2'31 



9. 



S^ Si 



S a5 

 c S o 



-=•2 2 

 ^'^ '"' >» 



C 



728 

 1141 

 891 

 830 

 900 

 950 

 895 

 912 

 867 

 1146 



900 

 900 

 900 

 1000 

 840 



26 

 48 

 20 

 28 

 24 



21-5 

 17-5 

 22-5 

 24 

 44 

 at least. 

 37 

 32 

 85 

 20 

 22'5 



Price. 



£. s. 



60 



75 



52 10 

 60 



53 



61 10 

 85 

 53 

 68 

 56 10 



