US1136665A - Brake. - Google Patents

Description

' idly carry off the heat imparted HERBERT FROOD, OF BUXTON, ENGLAND.

BRAKE.

Speeeation of Letters Patent.

raten-rea Apr. 2o, i915.

Application filed July 25, 1913. Serial No. 781,067.

T0 all whom it may concern.'

Be it known that I, HERBERT Fnoon, a subject of the King of Great Britain. and ireland, and a resident of Buxton, in the county of Derby, llngland,'have invented certain new and useful Improvements in Brakes, of which .the following is a specilication.

This invention relates to improvements in and in connection with brakes the Wearing surfaces or elements of which are composed of textile or like or other non-metallic material. Such -a wearing surface or element may conveniently be of the nature described in the specification to myprior BritishLetters Patent No. 4627 of 1909. Brake bands vor blocks of the character and substance above referred to are commonly mounted upon shoes or supports which may be vmetallic or'non-nietallic.' In either case no provision has been made for immediately conducting away or dissipating the heat set up in the band or block as a consequence ofthe application of the brake, with the result that the shoe, support, post, or the like bearing the band or the block, has become so hot that thebraking surface has been damaged by it, and in some `cases, where Wood hasbeen used as a backing for the brake, the Wood has been set on lire.

In carrying this invention into effect the brake band or block is mounted upon or combined with a backing or support whichv is of such a nature and conformation as to efficiently and readily conduct and radiate or dissipate the heatconveyed to it by the brake band or block. Such backing or support may itself form-the main support for the brake block or band, but it is vpreferably placed between such band or the like and the post or equivalent member by which the band is carried. If the heat dissipating backing is integral with the post or the like, the necessary formation will be given to the post at or near that surface to which the brake band or'block is applied.

The heat dissipating backing or like part of a Vpost or other support is of a construetion and disposition which Will permit and induce the free circulation of atmospheric air through and around and about it to rapto it.

The accompanying drawings illustrate varions forms of heat dissipating devices combined with various brake blocks and supports therefor according to this invention.

Figure 1 illustrates in side elevation a post brake for colliery Winding 'gear hav ing a heat dissipating backing for the brake block. Fig. 2 illustrates in front vien7N the heat dissipating backing employed in the brake of Fig. l. Fig. 3 illustrates in a similar View to Fig. l a like brake -furnished with a modification of the heat dissipating device of Figs. 1 andv2. Fi View of the post of Fig. 3, the brake block being removed from the post to permit the modified form of heat dissipating device to be seen. Figs. 5, 6 and 7 illustrate further .odiications as applied to a post brake. Fig. S shows still further modifications in a post brake.. Figs. 9 and 10 illustrate a form in which the heat dissipating device or part of it is integral with the support for the brake block. Fig. 9 shows the various parts in side elevation assembled together;

g. 4 is a faceV Fig. 10 shows in like elevation the various parts separated from each other.

Similar letters of reference indicate similar or equivalent parts where they occur in the different ligures.

Referring lrst to Figs. 1 and 2 A indicates the usual support which supports the brake block B; Thisbrake block is of the nonmetallic character or nature hereinbefore described. -Between the support A and the block B is interposed a strip C of open meshed woven thick Wire fabric. The edges and ends of this strip are exposed to the air, so that the channels or passages formed through and along the fabric by-` the meshing and intersections of its component Wires are open to the air. InV place of the strip of Woven Wire fabric of Figs. l and 2, lengths of old wire rope may be employed. Such an arrangement is convenient .and economical for use in a colliery where such pieces of old rope are generally available. Figs. 3 and 4 show several lengths of Wire rope C laid in a recess formed `in that face of the support A to which the brake block B is applied. The parallel disposition of the various'lengths of rope in the manner shown produces longitudinal air spaces or channels between the various lengths, and the convolutions of the stra-nds of the different len ths provide transverse air channels leading into the longitudinal ones. The edges of the recess in the support are perforated as at D L' so as "tb give tmospberic oommunic'ejtion to oe otlie oorrugetedstrip of metoTC of the various air channels in end betvleenbe Fig.y 8 and be ot snfxcient stiness to preropes. vent-#the substaneebl the block B being de- 4c In the modification of Figs. 5, 6 and 'a' s pressed into thevalleys of the corrugated metal plate C having transverse ribs or EDS stri proieptin viront onesee, inter osedfoeY atleleimis1- l twenithe lo'ckB and the support When l. 'In e mechanical brake, e textilebreke" the plate is in place its edges are .open to' the .block, s. "support therefor, 'end mete-lhs 45 air. Tl1`e"`plate may be closely perforated heat conducting backing interposed betvveen 10 into' tlezspeees 'between the" transverse ribs the two, said boeking being 'l ormed; withi as shown stE'i'n Figui' ln Figs. 5 end 6 air-passeges therein to eectively radiate the plate C is shown formed for the epplithe heet taken up b'y the backing from' seid cation of the brake block to its smooth face' block, substantially as described. 50 and 4vvitb. ,its ribbed 'face for application to 2. In e mechanical broke', e textile bke thesupport A.. This arrangement may be block, e support therefor, and e metallic reversed, that is the ribbed fece may beer backing interposed-between said bleek en' thebrke block end the smooth 'tace be apsupport having @plurality of beat radiatingplied to the:.-support.y With. this reversed surfaces and air-passages for conducting 55 -errongement the perorations E ere not neebeet away from the block and support.

essary. In Figs. 5, Gand 7 the grooves pro- 3. ln combination a textile brake block "a' ducedby the ribs are shown es only extendsupport therefor, having 'e ribbed niet'l llic ing transversely across the plate C. lf de heat radiating 'surface interposed' between sired, however, otherv grooves, for exemple the block and the main body of'seid support, l6o 'lon 'tudinel ones, may be formed on the face substantially es set forth. 'I g of t e plateinsteed of or in addition to tbe Ll. In combination s textile brake block, s Y transverse grooves. Y grooved metallicA shoe therefor and a thin They brake shown in Fig. 8 has it Atrensmetal plate interposed between the grooved verselyrorrgeted strip of metal C disposed metallic shoe and the block, substantially es 65 v "between the support and the block B. set forth.

In the form of brekeend lient dissipating ln witness whereof l have hereunto set g device shown inv Figs, 9 and l0 tbe face of my hand in the presence oi. two subscribing 'the iietallio sloe orusupport A. trenos- Witnesses. verse y groove as i ustrated at n r' this grooved face is leid a thin sheet metal' HERBERT FRQE' plate C2 which may be closely perforated. Witnesses:

The block Bis laid on the plete C2. 'WILLrAM Geo. Hers, A plate snob as C2 maybe laid on the JOHN OGONNELL.

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