US290535A - Haevey b - Google Patents

Description

H. & H. B. CHESS.

RO'LL BRASSES AND METHOD OF MAKING THE SAME.- No, 290,535. Patented 1390.18, 1883.

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- or riders.

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shown at the chamfers c e in Fig. 2.

sence of any conjunction with the cylindrical- U Ni'rn STATES AT EMT Fries.

HENRY CHESS AND HARVEY 13. CHESS, OF PITTSBURG, PENNSYLVANIA.

ROLL-BRASSES AND METHOD OF MAKING THE. SAME.

SPECIFICATION forming part of Letters Patent No. 290,535, dated December 18, 1883.

Application filed November 1, i883. (No model.)

f0 CLZZ whom it may concern:

Be it known that we, HENRY Oi-rnss and HARVEY B. CHESS, of Pittsburg, Pennsylvania, have invented a new and useful Improvement in Roll-Brasses and Method of Making the Same, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a transverse section of a pair of rolls, showing our improved brasses applied. Fig. 2 is a longitudinal section through one of the brasses. Fig. 3 shows the method of fitting the brasses. Fig. i showsamodiiication. Fig. 5 shows details to be referred to.

Our present invention refers to roll-brasses and the method of constructing the same; and it consists in a novel form in whichthe brasses are constructed, so as to admit of easy change or substitution, and fitting the same entirely by lathework, and also a method of assisting in the retention of the lubricating material, which, between the heat and excessive pressure to which roll-bearings are subjected, is not easily retained in position.

In the manufacture of these brasses we prefor to make the two brasses A A,- or a pair of brasses, at one casting, as shown in Fig. 3, so as to form continuous parts of a cylinder. These parts A A are attached to each other by slight bridges or stays, a a, in the casting; The flange is then chucked into a lathe, the inside bored out to standard measure, and the outside turned off also to standard measure. The bridges are then broken out and the two brasses are complete. Three or more brasses may be cast in this manner and finished at the same To retain these shells or brasses in po-' sition in the blocks and to prevent them from revolving out of place we cast lugs b b on the flanges, which fit into corresponding recesses made in the pillow-blocks O, or in the carriages There is no conjunctionof thislug with the cylindrical part of the brassesas This abpart of the brasses permits the advance of the lathe-tool entirely up to the flange. It is evident that by this uniformity of the section throughout each portion of the brasscs is equally strong, and this greatly lessens the dangerof damage from breaking at any weak point, as is the case with brasses as now made with a flattened base, as shown at D, Fig. 5. It is also evident that, should the brasses become excessively heated, as is the case sometimes in quick and high-speed trains, our improved form permits an easy expansion in its bearings from its center or lug outward and around in each direction, which is an essential feature of our invention. Again ,where limited space is had between the necks, this new form permits a strong construction in the form of the pillow-blocks, carriages, and riders by avoidance of the square recesses andshort angles and abrupt change of sections necessitated by the use of brasses with squarebases. Again, we effect a great economy of costly material. Single brasses may be made with thickened bottoms by eccentric boring, as shown in Fig. 4, which will fit in the same bored recess.

It isa well-known fact that excessive waste of lubricating material used in roll-brasses goes on by leakage and by non-retention on the side of the brasses toward the coupling. Another essential object of our invention is to retard or check this leakage or waste. It is also well known that oil or other viscid material will not, on journals, travel over a groove or pass through a smaller diameter if the motion of the journal be rapid, owing to the centrifugal force exerted on it. If the motionbe slow, the trough-like action of the raised edge 6!, as shown in Fig. 2, will retain thelubricating material; hence in turning the roll-neck we sink the neck at the end next to the coupling for the space of about half an inch, or to adiame ter equal to that of the coupling, the latter being invariably from one-half to an inch smaller in diameter. The flange d, projecting inward, is left on the brasses at the side next to the coupling, as before stated, which flange is made by boring thebrasses to match the turned depression at the end of the neck, as shown in Fig. 2. This system is peculiarly applicable when bearings are made of Babbitt or other like metals poured with the roll in place.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-- 1. As a newarticle of manufacture, rollbridges or stays in castings, whereby they are brasses A, of uniform thickness throughout, capable of being finished and fitted by lathe- 10 and provided with the lugs b b and flange d, Work, substantially as described.

substantially as and for the purpose set forth. I v HENRY CHESS. 5 2. The method herein described of making HARVEY B. CHESS.

roll-brasses, the same consisting of casting two \Vitnesses: or more brasses so as to form continuous parts WVM. N. EASTON, of a cylinder, the parts being connected by H. B. APPLEWHAITE.

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