AMERICAN INSTITUTE. 



117 



Johnson^s Patent Adjvstahle Hayiger. 

 Wm. Cowin, Lambertville, N. J. 



The great desideratum, as every machinist 

 knows, is to have a hanger which allows at 

 once an easy and permanent adjustment of 

 the box, in position, both laterally and ver- 

 tically, and also an angular adjustment in 

 direction, so that not only the centres of all 

 the boxes or bearings shall be in the same 

 right line, but that the axis of each shall 

 coincide with that of each of the others. 



This hanger, it is thought, accomplishes 

 effectually all that is required, and does it 

 in such a way as at once to secure the 

 greatest possible degree of compactness, 

 simplicity and strength. That such is the 

 fiict, will be manifest from a very slight 

 description of the improvement: 



H is the box, having two pairs of cylindrical surfaces, each pair being portions 

 or segments of cylinders at right angles to each other, and to the axis of the box. 

 B is the hanger, with four enlargements, forming bosses E, the inner end of which 

 is cored out to admit four short blocks, while the outer end is drilled to receive 

 the four screws F, by which the box is adjusted in position; the four blocks being 

 ■cast with a curvature in one end, fitting that of the box, and which, when pressed 

 up by the screws, secures the box firmly in position, at the same time allowing it 

 to conform freely to the line of shaft. 



Some of the most obvious advantages of this hanger, are the following: 



1st. Its cost is scarcely, if at all, more than that of the ordinary hanger, all the 

 fitting required being the four screws. 



2d. It is equally and perfectly adapted to every kind of line shafting, whether 

 in the form of brackets or pillow block bearings, and to the support and adjust- 

 ment of single and disconnected shafts of machinery. 



3d. Any number of these supports can be brought into perfect and permanent 

 adjustment with the utmost facility and dispatch. 



4th. The perfect freedom with which the box adjusts itself to the shaft is such 

 as to equally distribute the friction throughout its entire length, under every vibra- 

 tory movement of the shaft, thereby requiring the least possible quantity of oil, 

 and preventing that unequal wearing and disfiguring of shafting, which adds great- 

 ly to its friction and impairs its durability. 



5th. The strain or pressure upon the box being always precisely perpendicular 

 to the point of resistance in every direction, and all the parts being exceedingly 

 compact and .simple, this hanger has the two-fold advantage of requiring less 

 weight of met^l, and securing a greater degree of strength and safety than any 

 other device, thus challenging the attention of all who either manuGicture or use 

 line shafting, as well on the score of economy, as for its perfect adaptability to the 

 purpose for which it is designed. [^ large silver medal awarded. 



