US1130602A - Journal-box brass. - Google Patents

Description

G. E. HOYT.

JOURNAL BOX BRASS.

APPLIOATION FILED Arms, 1913.

1,1 30,602. Patented Mar. 2, 1915.

jjg. J.

a ibi/nus HE NORRIS PETERS C0,. PHOTO-LITHO WASHINGTON D. c.

rinrrn sn'rns JOURNAL-BOX BRASS.

Application filed April 8, 1913.

To all whom it may concern a.

Be it known that. I, GEORGE E. Hora, a citizen of the United States, residingrat New Orleans, in the parish of Orleans and State of Louisiana, have invented new and useful Improvements in JournaLBox Brasses, of which the following is a specification.

This invention relates generally to an improvement in journal boxes and particularly to a specific construction of the bearing surface of the brass therein to minimize friction.

The main object of the present invention is the provision of a brass for the journal box particularly constructed in the arrange ment of the Babbitt-metal thereon to mate rially reducethe bearing surface and conse quently minimize the friction.

The invention in its preferred form of details will be described in the following specification, reference being had to the accompanying drawings, in which Figure l is a bottom plan view of the improved brass. view on the line 22 of Fig. l with the axle in place. Fig. 3 is a sectional view on the line 3-3 of Fig. 1.

Referring particularly to the accompanying drawings, the brass 1, which aside from the details hereinafter noted, is of the usual construction for cooperation with the ordinary journal box, is materially reduced in width at its central point gradually increasing therefrom to the wheel seat end of the brass. On the surface of the brass adjacent the axle 2 is arranged the Babbitt bearing, the same being secured to the brass in any desired or preferred manner. This Babbitt bearing will, for the sake of clearness of description, be stated to include two strips 3 and 4: intersecting at the central point of the brass and disposed at an angle to each other longitudinally of the brass. The bearing or lower surfaces of the bearing strips 3 and 4 are of course curved to conform to the curvature of the axle, and the adjacent ends of the respective strips are spaced apart a distance less than the diameter of the axle. By this arrangement it will be obvious that considering the bearingsurface of the axle as circular the Babbitt bearing has its maximum bearing pressure point centrally of the strips from which the bearing extends 1n opposite directions and in effect on spiral lines, as by reason of the angular relation of the strips they extend spirally of the axle.

Specification of Letters Patent.

Fig. 2 is a Vertical sectional.

. Patented Mar. 2, 1915.

Serial No. 759307.

Under these conditions a minimum pressure point in bearing is obtained at the remote ends of the strips, and the bearing pressure gradually increases from such minimum point toward the center or juncture of the strips where the maximum pressure is had. If desired, the brass intermediate the adacent edges of the strips beyond their meeting point may be cut away to reduce the weight, and the ends of the strips at the end of the brass next the flange of the journal box may be connected by a transverse strip 5.

The Babbitt strips 3 and 4: are preferably supplemented by brass strips 5 whichare arranged on the sides of the Babbitt strips to support said Babbitt metal from spreaddisposed at an angle to each other longitudinally thereof, and the end strips 5 provide openings 6 which are arranged medially of the said brass at opposite sides of its center, these openings 6 coincide or register with openings 7 correspondingly shaped thereto and formed in the crown of the brass so that when the brass becomes heated from excessive friction the expansion and contraction resultant will be taken care of due to the openings 6 and 7 in both the Babbitt and crown. Thus it will be seen that the brass by reason of its construction with the openings 6 and 7 permits expansion and contraction thereof under all conditions.

What is claimed is 1. The combination with a brass for journal boxes, of a Babbitt bearing arranged on the journal side of the brass and having diagonally arranged bearing strips of uniform width throughout disposed in criss-cross relation longitudinally of the brass to the ends thereof and intersecting each other at the central point of the latter to form spaces therebetween at opposite sides of their point of intersection, the surfaces next to the journal of the bearing strips being curved to conform to the curvature of the said journal, and also the adjacent ends of the respective strips being spaced apart a distance less than the diameter of the journal, and pieces connecting the ends adjacent to each other of the respective strips, the said brass having its crown provided with openings correspondingly shaped to and coincident with the spaces formed in the Babbitt bearing V the diagonally arranged strips and end pieces to allow for expansion andjcontra'o tion of the crown and Babbitt, the width at longitudinal stretches of the strip beyond the intersection thereof, the inner'faces of the strips being in contact throughout their area with the brass; V V

r 2; In a brass for 'journalboxes, a crown piece, and a Babbitt bearing arranged on the Gopi es of this patent maybe obtained iorrfive ceint s each by addressing the "Com mis'sioner of Iatents;

joplrnal side of the crown piece, the said crown piece and Babbitt bearing being formed with coincident openings tapering'li in a direction toward each other and ar-' ranged at opposite sides ofthe medial portion thereof. f

In testimony whereof I aflix my signature in presence of two witnesses."

g 7 GEORGE E; HOYT.

Witnesses: 1 't JOSEPH S. CAREY, i

LoUIs G. EBNOT.

Washingt0n, D. C. p 1

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