84 ANNUAL OF SCIENTIFIC DISCOVERY. 



the same pattern, the expense of repairs being found to be, in consequence 

 of the slow motions and the equal distribution of the wear, much less 

 than was anticipated. The number and variety of the motions in this 

 device are said to exceed even that of the famous card-sticking machine, 

 the operations of which have been several times exhibited in the mechan- 

 ical department of the various fairs in our principal cities. This com- 

 plexity of the mechanism has been endured rather than to involve the 

 immediate working parts in any motions except those absolutely necessary. 

 Several devices have been patented by other parties at various times for 

 stripping top-cards by automatic apparatus, but they have failed chiefly in 

 this point, viz. : that the motions to which the cards were subjected were 

 found to render almost utterly impracticable the delicate adjustment which 

 is necessary in this species of mechanism. 



Wellman's machine lifts, strips, and replaces the cards with a motion 

 very closely resembling that of the hand ; and having originated with a 

 thorough practical carder, who has given this machine his enthusiastic 

 attention for several years, it may safely be judged worthy of the 

 immediate attention of all interested in the rapidity and cheapness of 

 the cotton manufacture. 



NEW MORTISING MACHINE. 



A very light and efficient machine, equally well adapted to mortising, 

 ganing, or tenoning, in either soft or hard wood, has been recently 

 patented by Messrs. Plumb, of Honesdale, Pa. The inventors appear to 

 have stepped boldly out from the beaten track, and to have produced a 

 device novel in several important respects, and worthy of admiration, 011 

 account not less of its obvious convenience than of its smooth, accurate 

 and rapid performance. The machine, when driven by hand- power, is 

 readily moved to any desired point on the timber a quality which of itself 

 sufficiently commends it to the favor of practical workers in heavy 

 lumber. Unlike the ordinary varieties of mortising machines, this is 

 capable of cutting very close to the edge or end of a stick, the great 

 distingtiishing feature of the invention consisting of the employment of a 

 species of miniature plane-iron, to shave rather than chip down the 

 material. Two chisels of proper width play vertically at proper distances 

 apart to mark the ends, while a stout arm projects downward and travels 

 to and fro between them. This arm, which receives by very simple 

 mechanism a motion precisely adapted to its purpose, dovetails into a 

 small steel cutter, or double-lip chisel, which planes in either direction 

 with each movement of the slide. The machine proves itself adapted to 

 every kind of heavy work, being capable of sinking mortises from two to 

 ten inches long to a depth of eight inches, and of any breadth from three- 

 eighths of an inch to three inches, according to the chisels and cutter 

 employed. Ganes or rectangular cavities 011 the corners of stuff are 

 executed with equal facility, the fixing of the machine in any required 

 position being readily effected by the aid of a simple clamp. 



