US987799A - Dust-guard. - Google Patents

Description

' e. G. FLOYD.

DUST GUARD.

APPLICATION FILED MAR. 23, 1909.

987,799. 1 Patented Mar.28, 1911.

. :STAIES. PATENTroFFIoE.,-; iei mtr; mut m" 'e mrpr. to fmmmmw W 'n-e'i-F emWaIWmm.

To 's'u'ppliedflonf. opposite sides'with suitable" V ',Be'-it known hati-- I, GEOBGE G, Enoxiha pac 'ngniaterial, .the' device being provided iti birth United fitates, with aspring to contract the guard or draw GraniteCity,in'the'countyiof;Madison and! the parts thereof inwardly on to the'axleto '=,.5 State: ofyIlhnois', have invented certain new." compensate for the wear WhichnecessarilyfiO and." useful .Im rovements in'Dust-Guards, -occurs in the device. v .I-.of wl i'ich-theffo owin a'specificationi- Inthe accompanying drawing," which A'In".railway car-trucis it is necessary that "forms a part of this'specification'and to thea'xle's sha'llfbe free to moveboth. vertiwhich-reference should be made in connec "11 calliand laterallyor horizontally relatively. tion with the'following detailed description v extraction ofthewedges and brassesandbethroughout the various viws:

. e journal box'es, suchhorizontal movefo r;a full and com lete understandin of the merit taking plaoe during the application or inyentioml have illustrated a desire 1e em- 7 the brakes, while the capability or-capacity bodiment of the 'invention,' like reference- ,-.'I' for"vertical shifting. isnecessary to permit characters referring to the same parts causefofithe 'wearingof. the latter. It is In this drawingl tigure 1' tea face view .usual' to femployawooden dust-guard, aperoi: one form of the improved dust-guard; ..tured'centrallyto'acconunodate the axle, for F1g.'2 18 a section on.1 ine 2.-220f Fig.;-1', as

r each journal-boil, the guard closely hugging viewed in the direction indicatedzby' the ar--.

'20 'br' fitting around the axle 'to prevent escape rows; Fig. 3 is a top edge 'view' of, the-'coiioflthoihor other lubricant from the box s action; and Fig. .4 is a cross-section on',

andtheentianceof dirt or dust thereto lme of Fig.1; y v being somewhat smaller than the box w ere- The 1mprov guard Includes two curved by.-.it; will. theoreticall partake of the non-' 'metalhc' PflXtS lo-and 11, the former atone-y -25 rotary movements of t 1e axle. 'Such a'guafd .end having a' recess 12 to accommodate an" must fit'rather closely in the'guiding'grooves overlapping o'rtiou 13. of. the companion in the journal-box supplied. to accommodate part 11', the tter being simllarlylreoessed it, otherwise the oil will escape anddust or on its, opposite 'side at 14: to receive an overdirt enter. When suchwooden guards are lapping extension 15b t the part 10, these -;Patented Mar. 2mm.

Bil employedthey,frequentlybecome swollen, -two portions 13 and 15 being pivoted or warped, and crampedin the box,so that they hinged together'bv means of a rivet 16 passlcan not move with the axle, the result being through alined apertures of thetwo porkhan; the latterduring its'rotation wears the tions. At their opposite ends these two ..-=-wood as to enlarge the hole accomm'odab parts or members 10 and 11 on opposite' l51ing it, thereby destroying the essential fitbesides are cut'away, shouldered, or recessed .tween the guard and axle and defeating the at 17 and 18 to' provide for the accommoda-' 3 purpose for which such ,a (lust-guard is emtion of the overlappi extensions or prop'loyed and prot'ided. Obviously, a guard of longations 19 and 20o approximately onecharacter to be effective should fit. half the thickness of the parts 10 and 11. In

40 snugly andfneatly'at all times about the general shape .this uard is of-somewhat;

axle, should be free to more easily with the elliptical formation, aving a central'round axle, should fit accurately in its guiding and hole or aperture '21 of the same diameter as holding grooves to keep theoil in the box that of the axle. which passes therethrough,- and tree the outer dust and dirt from enterthesize of such hole, however,-being varia- 45 ing, ant should notbe subject to s'welling, ble, owing to the capability which the de wiee loo' wa'rpin or the like. To meet such require: possesses for contraction. ments have invented a dust-guard prefer On their 0 posite sides the pair ofoomably'rnade of metal in two parts, and supanion metal ic hin ed members 10 and 11 plied with felt or the like on opposite sides are rooves. 22 an 23 ofsubstantiall el- 50 to maintain a suitable sliding fit with the 'liptica l shape andform, thegtoove 0 one .boxi Such guard is made automatically conpart forming anextens on or prolongation tractiug to retain a close fit' about the axle, of that on the same or corresponding slde'of and in the preferred embodiment of the inthe other member. Thesetwo'groo'v es are 'liQIIap ing metal pieces hinged together and separated from one another by an'intervenvention "the guardis composed',o f two over- I p 1" ing, outstanding fin or web 24,-havingat it's ,1 1 o iug rings 28 and 29 is such that the guardouter extremity a head 25, the opposite edges of-whichare crimped inwardly somewhat to retain the two strips of packing 28 and 29 in the grooves and prevent their displace ment or dislodgment.. Such packing may be of any suitable or desirable form or charac ter, such, for example, as felt, each strip extending substantially completely around the guard on one side, not being interrupted, Severed, or broken at the hinge connection between the two parts 10 and 11, such packing possessing suiiicient give, stretch, or

elasticity to permit the turningof the memrivet 16 without breakthe grooves are fiat, being'subscquently inwardly crimped, as is shown clearly in- Fig.

4, to grasp and somewhat indent the pack-' ings to securely-holdthesame in position. a On their outer faces and near their upper ends each of the- members 10 and 11 is supplied with an outstanding projection30 'havmg a hook portion 31 which are engaged by the inwardly-bent ends 32 of a wire spring 33 extending over the top of'the guardIand' acting to shut or close the hin edmembers together or on to the axle on which they fit.

The web 24 and its head 25 form a substantially T-shaped rim, andwhen the opposite ends of the head are bent or crimped inwardly to confine the packing in place, there is provided. an undercut marginal groove at each side ofithe dust guard member for positively holding the packing strips in place. i

The over-all dimension of the two packmaintains an oil and dust tight 'slidable'connectiun in the guiding grooves ofthe jour-- nal box (not shown), whereby such guard will at all times prevent the escapeor leakage of the lubricant'from'the box and the entrance of foreign materials or dust and dirt thereto. Since this guard or protector is made of metal it is not subject to becoming swollen, warped,or twisted or likely to become cramped or immovably fixed in the guides or slots of the journal box. Owing to the revolution of the axle within the guard some wear on the latter is ofcourse likely totake place, and in order to at all times maintain a close and snug fit about theaxle and an even wear on the guard the spring is provided to automatically contract the parts of the guard on to the axle, so that. although 'thesemembers may become some opening in the strip seated in each what worn, the diameter of the hole through which the axle passes will be maintained substantially constant regardless of whether the'wear takes place on the sides of the members or at the tops or bottoms. To introduce such a guard in operative'position in the ournal-box slots, the spring 33 is re moved and. the hinged members dropped 'The entrance of dust or dirt to the box through these portions of the recesses 17 and 18 not filled by the overlapping ears or proj actions 19 and 20 is prevented in the usual manner by closing the top of the dust-guard k journal-box with a wooden or other strip or piece.

To those skilled in the art it will .be apparent that my improved device possesses many features of novelty and improvementover the dust-guards now known to the public and found on the market, and that such a guard will effectively and efficiently retain the oil in the box, prevent the passage of dust or dirt thereinto, and will maintain the properfit on the axle proper. A device of this kind is susceptible of considerable modification with respect to the details of construction without departure from the heart of my invention and without the sacrifice of any of its advantages, consequently. it should be understo'od'that this invention is not limited and restricted to the precise and exact details of eonstruction herein described andset'out I claim:

1. Adust guard having a substantially T- shaped rim around it's periphery producing marginal grooves at opposite sides of the guard, the inner face of the head at each side of the rim being incl ned 'to form' an .undercut wall for the groove, and a packing groove, substantially as described.

2. A dust guard comprising a pair of hinged members to embrace an axle, each member being provided upon its outer pe riphery and below the top of the guard with a laterally projecting downturned hook lying in the plane of the guard, and a spring bar extending across the free ends of 'said members with its ends turned inwardly toward one another and provided with lateral' terminals engaged with said down turned hooks,'substantially as described.

3. A dust guard comprising a pair of yieldably connected members to embrace an axle, the peripheries of said members being formed intosubstantially T-shaped rims iroducing marginal grooves on opposite sides-of each' member,corresponding grooves of said members being continuous with each other, and a' packing strip seated in each ward one another and provided with lateral groove, substantially as described. v c, terminals engaging said hooked projections 4.- A- dust guard, comprising a pair of on the hinge members, the main body or orhinged members to embrace' an axle, each tion of said spring bar being substantially 5 melkrllber being provided 'uptzln itsl outer 'pestraight, substantially as described. rip ery an 'near its ree en wit 1 a lateral *1 hook projection lying in the plane of the GEORGE FLOYD guard,-and a spring barv extending across Witnesses: the free ends of the members, the ends of E. B. Sunnznn, lofisaid spring bar being turned inwardly to-' JAS. H. LOUIE.

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