AMERICAN INSTITUTE. IT 



REPORTS OF COMMITTEE ON MANUFACTURES, ARTS, 



AND SCIENCES. 



Bullet Moulds. — Henry L. De Zeng's. 



The committee on manufactures, arts, and sciences, to whom 

 was referred, for examination, the bullet moulds exhibited by Mr. 

 Henry L. De Zeng, have to report : 



That the moulds presented for their inspection (which were 

 fitted for making pointed or Minnie balls) were ingeniously design- 

 ed, well executed, and appeared fitted to produce bullets more 

 rapidly than any other form of moulds which has come under their 

 notice. 



The committee did not see the apparatus in use, but are of 

 opinion that, unless it is important that bullets should be perfect- 

 ly homogeneous, or that the metal of which they are made be of 

 equal density in every part, this form of moulds will be found a 

 useful improvement. 



Respectfully submitted, 



JOHN D. WARD, 

 MENDES COHEN, 

 SAM'L D. TILLMAN, 

 JOSEPH P. PIRSSON, 



Committee. 

 New York, Kovemher 21, 1859. 



' Friction Bush. — "William Allender's. 



The committee on manufactures, arts, and sciences, to whom 

 was referred for examination an anti-friction bush, exhibited by 

 Mr. Wm. Allender, have to report: 



That the principal peculiarity which distinguishes the specimen 

 exhibited from others of the same class, consists in the introduc- 

 tion between the rollers of their springs of sheet brass, fitted to, 

 and embracing such portions of their circumference as is supposed 

 sufficient to retain them in their proper places while at work, 

 instead of small pivots and rings, at the ends of the rollers, which 

 have heretofore been used for that purpose. 



How much this change may be found to improve the working, 

 and increase the durability of the apparatus, the committee are 

 unable to decide, and decline expressing an opinion thereon until 

 further use has demonstrated its advantages. 



The form of the case, or ring, which receives the rollers, will 

 admit its being fitted into solid sheaves in ship blocks, instead of 

 [Am. Inst.] 2 



