MEMOIR OF DANIEL TREADWELL. 



441 



The following is a summary of the guns manufactured by Mr. Treatlwell : — 



"Of the guns with a lining of steel, the wrought-iron bars being wound upon a previously 

 formed steel ring, eiglit were six-pounders of the common United States bronze pattern, and 

 eleven were thirty-two-pounders of about eighty inches' length of bore, and eighteen hundred 

 pounds' weight. Six of the six-pounders and four of the thirty -two-pounders were made for the 

 United States. They have all been subjected to the most severe tests. One of the si.x- 

 pounders has borne 1,560 discharges, beginning with service charges and ending with ten 

 charges of six pounds of powder and seven shot, without essential injury. It required to 

 destroy one of the thirty-two-pounders a succession of charges ending with fourteen pounds 

 of powder and five shot, although the weight of the gun was but sixty times the weight of 

 the proper shot." 



Besides these, several guns were made on Mr. Treadwell's own account. 



The buildings in Brighton were never occupied for the purpose intended, nor 

 for any purpose, except for a short time in 1848 as barracks for the volunteer 

 soldiei's of Massachusetts returning from the Mexican War. The machinery and 

 tools, together with the buildings, were sold in 1855, the land in 1864, and the 

 whole project ended with large loss to the company. 



Mr. Treadwell in his Autobiography says of the result of his long and costly 

 labors : " Few men look with kindness upon a projector by whose plans they have 

 sustained a loss of money. The kindness of my friends in this case, however, 

 has seemed to increase with our disappointments, and 1 cannot forbear to name 

 amongst them Mr. Francis C. Lowell, who, since the abandonment of this design 

 has treated me as though the failure were due to an error of his own, rather than 

 to any miscalculation of mine." 



One of the thirty-two-pounders was presented in 1874 to the Institute of 

 Technology, in Boston, on which is inscribed, " Daniel Treadwell, Inventor and 

 Maker, 1844." 



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TREADWELL THIRTT-TTVO-POCNDER. — MASSACHCSETTS ISSTITLTE OF TECIIN'OLOGT. 



Francis C. Lowell, Esq., also has a thirty-two-pounder, and the editor of this 

 Memoir a four-pounder. 



