MACHINE FOR SHOEMAKERS, ' 165 



balance itself, as it is in 7ny pendulum^ the watch (or my 

 longitude time-keeper) would then perform to a few 

 seconds in a year." 



Indeed, after the compensation for heat and cold was His first at- 

 perfected in the pendulum, the first idea that would ^^J^^Yn ^b^s 

 na< urally occur to any person who wanted to correct the way, and, 

 same errors in watches, would be, the application of a 

 similar contrivance to the balance; and the method of a 

 thermometer acting upon the spiral spring, could only be 

 thought of in consequence of the first attempt proving -, was aban* 

 abortive. But, let us repeat it again, in whatever man- doned for the 

 ner Mr. Harrison tried to effect a compensation in tKe curb, 

 balance, the fact is, that he did not succeed ; and, as his 

 ideas upon the subject were never communicated to the 

 publfc, the example of his endeavours, far from lessening, 

 rather increases the merit of those artists who have actu- 

 ally accomplished that great desideratum in Chro- 

 nometry, 



R.M. 



XVI. 



fiescription of a Machine for the use of Shoemakers, By 

 Mr. Thomas Parker*. 



,R. Thomas Parker, the inventor of the machine, was Machine fo? 

 desired to attend with it upon a committee appointed hy shoemakers, 

 the Society of Arts, on the 22d of November, 1804, and 

 then informed them, that he had used this apparatus for 

 twelve months past, and found it very useful. That all 

 the work of shoe-making may be done with it standing ; 

 but that in some parts thereof he finds an advantage ia 

 using along with it a high stool ; and that before he used 

 this machine, he never saw or heard of a similar inven^ 

 tion ; and that he has found it of great service to his 

 health. 



He stated the cost of such a nvachine to be about two 

 guineas. 



* Communicated to the Society of Arts, who gaVe a premium of 

 fifteen guineas. See aho our Journal, XIV. p. 1^:5, 



.Fig, 



