US1421881A - Brake beam - Google Patents

Description

C. H. WILLIAMS AND E. G. BUSSE.

BRAKE BEAM.

l APPLICATION HLED JULY 28,1912l.-

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c. H. WILLIAMS AND E. G. BUssE.

BRAKE BEAM.

APPLI'ATION FILED JULY 23,1921. l 1,421,88 1 Patented July 4, 1922..

2 SHEETS-SHEET l2.

plicatiom in which- 'venti'on e f f' Figure is other modicationof ourinvention; 25c

@the locking Vplate shownfin Figure .5J-f

[ofthe sleeve.

morsa stares ArtNr orsiC,

CHARLESIIAINES WILLIAMSVAND EDWIN G. BUssE, or' CIIICAGO ILLINOIS..

AssIGNoEs ro CHICAGO RAILWAY EQUIPMENT COMPANY,v or CHICAGO,

ILLINOIS, A CORPORATION or ILLINOIS. y

'BRAKE BEAM.

- Appiicaiionpied Juiy'es, 1921. Seria1.No.4s,212.

To @Zlio/fomit may concern.' f

` Be it known that we, CHARLES! IIAINEs IVILLIAMS and EDWIN G. BUssE, citizens of the United States, residing at Chicago, county of Cook, State iof'lllinois, have invented a certain new and useful Improvement in'Brake Beams, of which the follow" ing is a full, clear, 'and exact description, such Vas will enable others skilled inthe. art to which it appertainis to make and use the same, reference beingl hadV tothe accompanying drawings, formingfpartof this ap- Figure 1 is a vertical sectional our improved brake beam. i

Figure 2 is a vertical sectionalview of view of Aanother form of our invention. 1

Figure 3 is .La vsimilarview of asti-ll differenty form offour invention.

:s Figure 4 5 is a 'horizontal sectional-view throughanothermodified form of ourv ina vertical section of still an- Figure VGf is f Ian` end elevational."Viewv of y Figure 7 is` an insifde endelevational' view "5 FigureV 8 is a/crosssectional view on line 8f-8O Figure '5.1 l'

This invention relates to a new and useful improvement in brak'ebevamsfand vis designedp'articularly as animprovement upon thattype of brakef-beamshown in the Robischung Patent` No. 549,021; dated October 29, 1895, and the Floyd Patent, No. 1,169,7 87,

vtheA sleeve. v.lfijead transmitted kthrough the so-called lockdated February 1 1916, both of which yare 'characterized by the utilization .of a Acoiled .i spring-Whose energies vare exerted tof-hold the `brake headk on the sleeve by exerting 4 a longitudinal pressure on said head in .a direction parallel to thej longitudinal axis of Thisfyielding pressure on the ing lplate,while permittingthehead to adustv itself rotatably onthe y. sleeve',. ,takes vup wear between the sleeve andhead and permits/.a slight 4longitudinal -movementf'of the 4headfon'the* sleeve occasioned by. inequalities4` in the track, or when-the wheels are rounding a curve inthe track. 'Ihis longiitudinal movement. oit' the brake head on the beam reduces wheel-flange wearto a minimum.v

` speciiicaiio'n of Lettesrateiit.

y latente'diiily 4,1922.

In allotx the yforins'of ouriiivention,the

yieldingmeans in theV Io'rmofV a spring* is arranged exteriorly or outside of the locking plate so thatV in the `eventof `breakage-or. 2

crystallizationof the spring, or should the .spring takef-apermanentset, it can-quickly and readily be observedfaiid'iin yad-dition Aconveniently and quickly'renewed. .g

Another object ofour invention is toYV provide ymeans -for-lfioldingfthe locking plate against vrotation so thatshould ithe-serrations onA ,the locking-block carried byw'the head (not shown), orv on the sleeve, become worn, the friction of the locking plate` against the end ofthe brake head willi-tend to prevent it from accidental rotatable displacement. f

. Another objectiof our invention is .to A

vide sight openings in the locking plate,

so that the wear of the parts canbe observed,

and n proper radjustment or lrenewals made in the event suchare desirable. s,

In the drawings, 1- indicates a compression member of a brakelbeain substantially,{U-E

shaped in cross-section. 2- is a cast",welded or forgedv `sleeve ko r thrust 'blockprovided -withfa s eat for* receiving 1 .the endofythe compression member 1. This sleeve isf-also provided with `al flange 2% "at, vits-.inner end,

against which the brakehead normallr pressed. The sleeve2may be providedfwith serrations 2"v for Vwell understoodipurposes. Y

2c' represents an kinwardly extendingshank threaded at its extremities to receive .a coupling by Whichatension rod, not shown,

is secured ingposition..v I

In Figure 1, sleeve 2 lwhich fori-ns a trunnion for thebrake head,as above described, ispreferably providedwitli arecess andan axial opening whereby a4 bolt ,4 mayy be passed through the lopening from the Ainside ying'plate lengage the ends of thebarrelportion of the brake head- .3 which extends outwardly slightly 'beyond ythe fend of .sleeye Vor projection on the sleeve 2', preferably 6 indicatesa fiat leaf spring-or spring washer, the ends of;- whose ar-ins. pass through openings in lugs l "uon ithe locking. plate.I The bolt 4 passes through openings lin the lockingplate 5v and friction washer '6 and receives a nuta, which is preferably castellated, as shown, whereby the pressure on thelocking plate against the end of the brake head may be regulatedor adjusted. 5b indicates a lug or lugs on the locking plate 5 designed to co-operate with a recess, or recesses, 2d in the end wall of sleeve 2 for the purpose of preventing rotation of the locking plate with brake head 3. By this means, friction is created between the lockeasily renewed. The space between the end of sleeve 2 and the locking plate is sufficient to take up ordinary wear, but whenthis space is' closed and the locking plate can no longer exert a yielding longitudinal pressure on the brake head, it is obvious that thel brake head should be renewed.

In Figure 2, we have shown a form of our yinvention in which a stud bolt 7 has a threaded end 7a which is secured in a tapped n clusive, the `yoke or spring stlrrup preventsv A opening in the midrib of the thrust. block,

which, in this instance, extends up within vthe space formed by the inverted U-shaped compression member. This stud bolt has a squared shank portion, as at 7b, and its outer end is threaded to receive' a castellated nut 8, which nut bears against the outer vface of a spring follower 9 telescopically Y arranged relative to a locking plate 10. The

locking plate 10 yin this instance is provided 'qwith an inwardly extending marginal flange embracingthe outer end of the sleeve and bearingiagainst the outer face of the brake Vhead 3.V This locking plate is alsok provided withfa lug 10a, which is received in a recess in the-end wall of the sleeve by which lit prevented from turning. The locking plate is also provided with a squared opening for engaging the squared shank portion 7b of the bolt and in this manner the kbolt is prevented from turning when the parts are assembled. The spring 11 is interposed be" tween the spring follower 9 and the locking plate 10 forcing said locking plate inwardly against the brake head to permitjthe yieldings longitudinal movement in an outward direction of the brakev head on'the sleeve.

In Figure 3, instead of a fstud bolt, we

Vhave shown a removable bolt 12 whose head bears against the end wall of the sleeve substantially in theman'ner described with re- Spect to Figure 1. In this form, the end Wall of the sleeve is provided with recesses 2 for receiving locking lugs l()b on the locking plate.

n Figure 4, we have shown .a construction in which the' locking plate 13 is pro- -ment of the head on the ting vided with an inwardly extending yoke pory plate, the end of the spring and the bolt protruding beyond the locking plate for in spection purposes. .u

Figure 5 shows a construction very vsimilar to thatV shown in Figure 4, except that the yoke 13b is made slightly longer "so that the spring 14a and the nutV 16at is housed within the yoke, being held in position by a Cotter pin 1G". In this and in the otherforms of my invention, the locking plate is preferably provided with a series Aof sightopenings-17 (see, also, Figures'1,'2, 3, t and 6) arranged to give a view of theadjacent contacting faces of the brake headV and sleeve so that in this manner, the observer cany ascertain theamount of wear of the parts.

In the form shown in Figures 4 to 8, in-

the locking plate from turning, but permits movement thereof longitudinally parallel to the longitudinal axis of the sleeve.-

In Figure 2, we have shown a serrated sleeve designed to be used vin connection with the well-known locking pawlv carried by the head (not shown), while in Figures 711, 3, 4 and the serrations, and consequently the locking pawl, are omitted and the 'locking member is relied upon to hold the head in its rotatably adjustedposition'. ,Thisl locking member also permits longitudinal movetrunnion'.v lVhat we claim` is: j

1. The combination'with a trunnion member of ai brake beam, kof a' brake head mountved thereon, alocking'member mounted for Vdirect engagement with said brakeV head,

means for preventing independent rotation of said locking member relative to; said'j.

trunnion member, and means Yfor yieldingly pressing the locking member against the brake head.

2. The combination with fthe trunnion member of a brake beam, of a brakehead said brake head, andyielding means exerting pressure' against the outer face of said locking member for normally permitalong said trunnion.

said brake head to move longitudinally 1 ziok 3. The combination with the Vtrunnion member of a brake beam of a brake head mounted thereon, a vlocking member'mounted for longitudinal movement relative tov said trunnion, and means for preventing rotation of said locking member relative to said trunnion.

4. The combination with a trunnion member of a brake beam, of a brake head mounted thereon, a locking member mounted upon said trunnion and capable of longitudinal movement relative thereto, an axially arranged bolt extending through saidlocking member, and yielding means interposed between the outer end of said bolt and said locking member.

5. The combination with the trunnion member of a brake beam, of a brake head mounted thereon, a locking member mounted on said trunnion, and means for yieldingly holding said locking member in engagement with said brake head, said locking member being provided with sight openings whereby Wear of the parts may be observed.

6. The combination with a trunnion member of a brake beam, of a brake head mounted-thereon, a looking member mounted on the trunnion for holding said brake head in position, and openings through said locking member opposite the engaging faces between the brake head and trunnion for observing wear of the parts at this point.

7. The combination with a trunnion member of a brake beam, of a brake head mounted thereon, a locking member designed to marginally and directly engage said brake head, and exteriorly arranged yielding means which exerts pressure against the outer 'face of said locking member, thereby permitting the head to move longitudinally along the trunnion, said locking member frictionally holding the head in rotatably adjusted position.

In testimony whereof -we hereunto aiiix 4.0

our signatures this 15th day of July, 1921.

C. HAINES WILLIAMS. EDWIN G. BUSSE.

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