No. 216.] 133 



This register is particularly adapted to Ocean Steam navigation; 

 a steamship furnisheii with one of these instruments, has a faithful re- 

 corded enumeration of the number of strokes or pulsations of a steam 

 engine from port to port, and a recorded, or rather scribed account 

 of the vState of steam while under way, (by the action of steam) 

 during her entire voyage — no other person but the master of the 

 ship, has access to the working parts of this instrument, the same 

 is a perfect " tell tale," upon the doings of firemen and engineers. 



A long sheet of white paper wound upon suitable rollers, is moved 

 forwards from one to the other by the action of that part of the ma- 

 chine which enumerates the strokes — the piston of the vacuum gage 

 is furnished with a pencil scriber, which is pressed upon the paper 

 by a spring, the rising or falling of the piston traced upon the mov- 

 ing paper, shows constantly and progressively the state of the steam 

 during the voyage — at the end of which, the sheet of paper may 

 be divided into days, hours and minutes; and the doings of each en- 

 gineer designated. 



The machine is well calculated to insure greater vigilance in the 

 performance of the duties of engineers, as well as the recording of 

 data upon which projectors of steam engines may base calculations 

 leading to greater perfection of the art of building marine engines. 



Steam Tilt Hammer^ 



A hammer of this kind upon a new plan was exhibited by L. 

 Kirk, Esq., Reading, Pa., and for which a silver medal wdiS awarded. 



The appelation of a " steam hammer," is applied to such as are 

 acted upon directly by steam, without the intervention of causes t* 

 give the motion to the hammer. 



The steam in this case, is applied directly under the handle of the 

 hammer, and belongs to this class. 



A steam cylinder and piston placed vertically beneath the handle 

 of the hammer, at about one h?lf the distance from the terminus to 

 the handle itself — furnished with suitable valves, steam and exhaust 

 pipe, and a facility by which the blow is regulated, and arrested at 

 any point of its descent, constitutes all the machinery about this 

 hammer; nothing can be more simplified or less liable ,to get out of 

 order, and for all the purposes for which a tilt hammer is appropri- 

 ate, such as forging blooms, hammering bars of uniform thickness, 



