upon a round smoke box. The flat flange which bohs to the frame extends 

 inward to just under the middle of the smoke-box, and there turns up a 

 vertical flange reaching to the smoke-box. The valve seat flange also 

 reaches horizontally to the side of the smoke-box, and an apron, or curved 

 flange, extends around the smoke-box between these flanges. The two 

 cylinders are bolted together through the upright flanges under the middle 

 of the smoke-box, while with the fastening to the smoke-box and to the 

 frame, the job is made very complete. 



The frames are solid with pedestals or jaws welded on. The jaws have 

 tightening wedges for taking up the wear on the sides of the boxes. For- 

 ward of the front jaw, the frame makes an offset downwards, as usual. 

 From the front leg of the front jaw, at about half its height, a brace is bolted 

 on and reaches to the under side of the oflTset, where it fastens on. From 

 the bottom toe or lug of the same jaw, a long brace extends to the front 

 end of the frame, trussed, at intervals, to the frame. The frame being 

 of good size, and stiflfly braced to the boiler, the whole structure is very 

 stiff". The fire-box is fastened to the frame by an angle iron, as is usual, 

 the bolt holes through the angle iron being slotted or oval, to allow for 

 the expansion of the boiler when hot. A long shallow groove or key- way 

 is planed in the top of the frame, under the angle iron, and a corresponding 

 groove is planed out of the bottom of the angle iron. A long key is then 

 driven in, to take whatever side strain there may be without crowding 

 on the bolts. 



The springs are long and easy, and between the lower ends of the outer 

 spring straps and the frame, blocks of rubber are interposed. 



The drivers are 7 feet between centers, — a good spread and ensuring 

 a liberal adhesive weight. The drivers are 5)^ feet diameter. 



The link motion is suspended upon a new principle, discovered b\" Mr. 

 John L. Whetstone, Engineer of the Works. We are not at liberty to 

 disclose the manner in which the centers of suspension are found by Mr. 

 Whetstone's plan, but it is very simple and solves the great problem, 

 so long pursued, of a perfectly equal admission, cut-off and exhaust, and 

 equal lead, on both strokes and in every notch of forward and back gear. 

 We say this understandingly, having had the whole process of finding 

 these centers, demonstrated to us, by diagrams and working models. 

 The principle is beautiful, and the locomotive builders of this country 

 could well afford to unite in a handsome reward to Mr. \Vhetstone, for 

 the simple process by which he secures the result to which so many un- 

 successful eff"orts have been directed. 



The truck frames are center bearing and the wheels are 4 feet 6 inches 

 apart centers. The journals are inside the wheels (that is McQueen's 

 double bearings are not adopted). The frame is \-ery light, very simple, and 



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