US749567A

US749567A - Railway

Info

Publication number: US749567A
Authority: US
Publication date: 1904-01-12
Anticipated expiration: 1921-01-12

Description

N5. 749,567." PATENTED JAN. 12 1904.

" R. P. LAMONT.

BRAKE BEAM.

APPLIOATION FILED OUT. 14. 1903.

H0 MODEL.

.- In Wantoni RoZert PLamorzt,

is? p' UNITED STATES Patented January 12, 1904.

PATENT. OFFICE.

ROBERT P. LAMONT, OF CHICAGO, ILLINOIS, ASSIGNOR TO SIMPLEX RAILWAY APPLIANCE COMPANY, OF CHICAGO, ILLINOIS, A COR- PORATION OF ILLINOIS.

BRAKE-BEAM.

SPECIFICATION forming part of Letters Patent No. 749,567, dated January 12, 1904;.

- Application filed October 14, 1903.

To all whont it may concern:

Be it known thatLRoBER'r P. LAMONT,a citizen of the United States, residing at Chicago, in the State of Illinois, have invented certain new and usefulImprovements inBrake-Beams, of which the following is a specification. I My invention relates to the beams for sup- A porting the brake heads for railway brakes and pressing the same against the wheel, and particularly to the manner of reducing the ends of commercial forms of rolled iron beams in order to fit into the brake head conven- A iently. The objects of the invention are to provide for reducing the end of an I-beam or the like in such a manner as not to crack the metal of the beam and to make a strong structure and utilize both flanges upon the beam. These objects and other advantages which will hereinafter appear, are attained by means of the construction illustrated in preferred form in the accompanying drawings, Wherein- A Figure 1 is a view in side elevation of a brake beam made according to my invention,

, with the brake head attached thereto.

Figure 2 is an end view of the beam-and the brake head thereon. i 3 Figures 3 and 4 are partial views of the end A A of the beam, showing the form of cut-out for reducing the end, respectively before and after the end portion is compressed. A Figures 5 and 6 are similar views of a slightly modified form of the same wherein a portion A of the web is left attached to the lower flange.

The necessary width of an I-beam as used for this purpose would in some cases make it I A inconvenient to attach the beam to the brake 3 head without reducing the end, and for the purpose of conveniently and safely reducing theend of the beam at, in order that the reduced portion 0 may fit within the brake head A b, as shown in Fig. 2, and economize space directly over the wheel,I provide the beam at A with a rounded cut-out portion d, which in the i form of Fig. 3 is shown as ending at the inner A side with a half circle 6, which comes up tan- Serial No. 177,088. (No modal.)

gent with the lower flange. f of the beam. The beam is thereafter compressed so as to bring the flange f in contact with the web on the upper portion of the beam, as shown at Fig. 4. Usually in the attempt to carry out this operation, if the slot d ends in a sharp corner at the back, it causes the web of the beam to split and crack during the process of bending, and I have found that where the cut-out is made with a curve a, this difliculty may be overcome. I

In Figures 5 and 6 I have shown an alternate form in which a small portion of the web, g, is left on the lower flange f, and the form of the slot is as in Fig. 5, so that when the parts are pressed together the two portions of the web meet and the thin portion g is bent out of its original position in order to reduce the ends of the beam, as will be evident. The formation of the slotwith a round end allows of this lateral bending of the flange of the web without crushing the same, and the beam takes the convenient form illustrated in the figures, which when clamped in place in the brake head gives the beam practically all the strength of the full width of the beam, while at the same time reducing the end sufliciently to go closely in with both flanges engaging the brake head and clamped solidly therein, as shown in Figure 2. The advantages of this device will be evident to those who are familiar with the manufacture of this form of brake beam.

Having thus described my invention and illustrated its use, what I claim as new, and desire to secure by Letters Patent, is the following:

1. A brake beam of uniform width practically throughout its length but having an end reduced with a sharp curve, the web being cut outwith a slot having a round inner end and the two parts being pressed together, substantially as described.

2. A brake beam composed of an I-beam of the same width practically throughout its length except the ends, and the end portion In witness whereof I have hereunto set my having an abrupt reduction formed by presshand in the presence of the two subscribed ing the two flanges toward each other, the witnesses.

beam having a short slit in theend lying close ROBERT P. LAMONT. 5 against the flange of the beam and the end of Witnesses:

the slit being made round, substantially as de- PAUL CARPENTER,

scribed. EDWARD C. BURNS.