US1418540A - Dust guard - Google Patents

Description

R. F. DARBY.

DUST GUARD.

APPLICATION man MAR. 3, |92'.

Patented J ue 6, 1922.

2 SHEETS-suffi 1.

R. F. DARBY.

DUST GUARD.

APPLICATION man MAR. s, 192|.

Patented June 6,1922.

2 SHEETS-SHEET 2.

automatic "lu-@E95 v.ROBERT n. DARB'Y; or YoNnERs, NEW Yoan.`

DUST GUARD.

To all whom tf/nay concern.'

Be it known that l, RonnRrF. DARBY, a citizen of the United States, and a resident ot Yonkers, in the county of lVestchester and State oli New York, have invented certain new and useful Improvements in vDust -Gruards, ot which the 'Following' is a specitica-tion.

The principal purposeot" this invention is to produce a dust guard for axle carrying journal boxes, ot extreme simplicity, cheapness oliconstruction, durability, and adjustability with respect'to wear. f

A further object isto provide a guard made essentially Yfrom a single plate ot laminated material, so bonded as .to resist penetration and consequent separation.l by submersion in lubricating oils and which does not bender warp, the sections of the plate being constrained together by a unitary resilient element acting also to maintainthem in register'.V

A These and other analogous objects-fare attained by the novel constructionV and arrangement ot parts ,hereinafter described and `shown in the annexed drawings, forming an essential in which: i

Figure 1 4is a t'ront elevationalyiew of adust guard showing a preferred torni of the invention.

VFigure 2 is a side view of the same. Figure 3 is a frontvie'w'showing a modited'torm of guard structure.

' YFigure f1 sidey View thereof. Figure 5 is a perspective view of 'th part ot' this disclosure, and

Iguardfparts being broken away to show the guard.

construction.

' Figure 6 is a fragmentary sectional View showingthe joint between sections oit 4'the Figure 7 is a fragmentary perspective View of the resilient retaining element.;

Stated in general terms, this invention, which is an improvement on an earlier guard, patented by me October 19, 1920,

Y 1,356,()1L6, is formed from a single` plate of Iuniform thickness throughout, bored tor A the axle and having a semi-circular bottom.

The blank is grooved or recessed substan- Itially central 'of lits-lateral edges and also -it isk to be used. l f 1 vmaintain contact with the'aXle;

Specification of Letters Patent. Patented 6,A 19.22.

Application filed.y March 3, 1921. Serial No. 449,391.

imately at the center of theaxley opening, parallel with the top.

i The joint may be made so that the con` tacting portions are offset in overlapping relation, or each grooveolfto receive a key, preventing lateraly movement of the main parts, but preferably the constraining means is formed with undulations filling the side. grooves and maintaining vthe, upper andI lower elements in Vertical relation as well as holding them togetherkand taking .up any wear that may occur.

Referring now to 'the drawings 'in detail,`

the numeral 15 designates the 'upper element ofthe guard and 16 theV corresponding lower element, both being cutvfrom an integral blankplate comprised ofilay'ers of `relatively thin sheets', as wood Veneer, invdurated fibre or like ibrous'materialy bond'- ed by cementy capable of lresisting the evtects oi oil, grease, water or like solvents.

'These elements, before separation,apresent a blank bounded by a Vstraight topr 17- having right angled side edges 18 merging into a curved bottom 19. p -V A central longitudinal channel or` groove 20 is tormedfrom end to end lin the top edge 17 .of the upperielement and registering channels 21 inthe side edges 18,the latter'. depth and 'terminate in y the` p being kof lesser curve 19.

On the. center line lof the blank, 1

planef uniform withor slightlyabove that at which the radiu'softhe curve 19 is taken,"v

the axle or sha-ft in connection Theblank'is cut across to haltiits thickness on one iside, as at 23, in aiplane slightly above ft-lre'centerof tlieopening 22 and on the center, the material beingshearedy or split between the lcutson the center` of the' blanksthickness, separating the Vsame-into two sections, 1n orderto take up 'wear and At the bottomsotfthey side ychannels 21,

ynear their ends vin the Ylowery elements '16,

is ank opening-22 suited-to thewdiameter of.v

:with which ,v

are holes 26 drilled substantially radial with respect to the opening 22 and fitting these holes are the angularly bent ends 30 of a wire 3l bent to form undulations 32 and 33 making Contact at the extremities of their loops with opposite sides'of the channels 21 in such manner as to hold the sections in alignment.

A`VThree or more of the undulations are formed to engage 'the lower section and at least as many with the channels in the upper element l5, the wire continuing, as at 34, straight upward to curved bends and then mergesinto a curve 36 of large radius 'disposed in the channel 20 and making contact with its bottom, acting as a spring by which Vthe sections are drawn together; although the spring element is shown as round, obviously a flat spring may be used.

In the modified form, shown in Figs. 3, 4, and 6, the blank isformed in the same manner with respect to its contour `and axle opening, but the channels 20 and 21 -are relatively narrower and the constraining element 34, including its ends 3() andl curves 35 and 36 are adapted to ht the channels, the undulations: 32-33 being omitted.

A single transverse cut 40 is made across the blank in the plane oit the center of the opening" 22 and thel separated edges are centrally grooved, as at el and 4l respectively in the upper and lower portions.

Tightly fitted to the grooves Lll are keys Vor tongues 4t2 of wood or like material, their extending ends entering lreely into the grooves al, in the upper element l5, in such manner as to permit relative movement olthe sections, towards or from each other, while the key obviously prevents side movement of the sections.

lt is to be noted that the spring bands 35 are raised from the bottoms of the channels il() or 20 an amount sufficient to permit the sections to be separated in order to 'freely enter the axle into the opening 22, but not enough to'allow the joints to become .flis` it will be understood that changes in the form, arrangements, proportions, sizes and details thereof may be made without departing froml the scope or the invention as de- `lined in the appended claims.

VHaving thus described my invention, what I claim and `desire to secure by Letters Patent is 1. A, dust guard comprising a laminated plate cut to form a` rectangular uppery section and a semi-circular lower section having between theman aXle receiving opening :and a single means passingirom one side to anl other, wholly contained within the contour of the side top edges of the laminated plate for resiliently constraining the sections in operative relation, said plate presenting a substantially level upper edge. I y

2. A dust guard k"comprised of a single blank of uniform thickness having channels in its upper and side edges, said blankhaving a central opening and cuts leading there- "from tothe side et ges dividing the blank in its level upper andv side edges, said blank having a central opening, upper and lower sections formed by dividing said blank trans` versely on the center line of' the opening, tenon and mortice elements formed `in the adjacent edges of said elements, and a unitary spring constraining element concealed in the mentioned channels circumambient said upper section and having angular ends removably engaged in said lower section permitting separation of the section.

4. A dust guard comprising a plurality of sheetsof fibrous material bonded by an impervious cementinto a plate of uniform thickness containing a central opening andv vdivided into upper and lower sect-ions in a plane corresponding toA the center ofthe opening, said upper section being substantially rectangular and'said lower section being bounded by a curve the radius ot which is taken at a point below the center oi' the opening, and concealed means Yfor resiliently l drawing said sections towards veach other.

A dust guard comprised of a single blank otunitorm thickness having channels in its upper and side edges, said blank having a central opening, upper and lower sectio-ns formed by .dividing said blank trans-` versely on the center line of the opening, saidlower section having a' semi-circular contour gradually increasing romthe sides toward the center, means- 'for preventing lateral movement ot sections, andtensional means for drawing saidfsections together,

said tensional means being concealed land protected within the mentioned channels.y

G. A. dust guard comprised of a single blank ot Aunilormthickness having channels in its upper land side edges, said blank hav ving a central opening, upper and lower-sections 'formed bydividing said blank trans versely on the center l-ine of the opening, a lstrip of spring materialhaving itsv ends fixed in said lower -section at thebottom ot the `side channels, undulating elements formed in said strip adapted to make'contact with the opposite walls of the side chanversely on the center line of the opening,

tenon and` mortice elements formed 'in the adJacent edges of said elements, a single spring constraining element disposed Wholly y within the mentioned channels, said elements having angular ends fixed in said lower section, and means formed with the upper portion of said element limiting the separation of said sections.

8. A dust guard comprised of a single blank of uniform thickness having channels in its upper and side edges, saidblank having a central opening, upper and lower sections foimed by dividing said blank transversely on the center line of the opening, a strip of springmaterial having its ends fixed in said lower section at the bottom of thel side channels, undulating elements formed in said strip adapted to make contact with the opposite walls of the side channels inl both upper and lower sections, a concavely curved element in said spring connectingv the side elements thereof by convex curves, said convex curves being raised above the bottom of the top channel, and keys fitted in said lower section entering grooves in said upper section, the outward motion of said keys being limited by the height of the con# vex curves in said spring.

9. A dust guard comprising a flat laminated plate of uniform thickness divided into two sections having between them an axle receiving opening, and a single means wholly contained within the edges of said sections for resiliently constraining them. in operative relation, said means being reinovable to permit separation of the sections.

l0. A dust guard comprising; a single lam.

inated plate divided into two sections provided with channelled edges and having be-A tween them an'axle receiving opening, and unitary means housed within the channelled edges for resiliently constraining the sec tions in operative relation. M

'11. A dust guardcomprising a laminated plate cut to form a rectangular'upper sec-l`r tion and a substantially semicircular lower section having between them1 an axle receiving opening,and means for resiliently constraining the sections in operative relation, said means being` housed yat the lateral edges of the platev within the channels formed .in said edges. y

' l2. A dust guard comprised of. a single blank of uniform thickness havingvchannels in its upper and side edges, said blank hav ing a central opening and cuts leading therefrom to the side edge l,dividing the blank into ,up-per and lower sections, and const rain-A ing means fixed in the lower section, dis- A 13. A dust guard comprised o-f a single blank of uniform thickness having channels in vits upper and side edges, said blank havposedin the mentionedchannels. n

ing a central opening, upper and lower` secf tions formed by dividing said blank trans versely onf the center line of the opening, tenon and morticeelements formed inthe adjacent edges of said elements, anda single constraining element concealed-in the mentioned channels circumambientsaid upper section and fixed in said lower section, said element being removably engaged therein.

14. A dust guard lcomprising a plurality of sheets of fibrous materialbonded by an impervious cementintoa plate of uniform thickness containing a -central opening` and divided into upper and lower sections in a 1 plane corresponding to the center of the opening, said kupper section being substantially rectangular and said .lower sectionv being bounded by a curve, and concealed means Ifor resiliently drawing saidsections towards eachother. i

ln testimony whereof I vhave signed my name to this specification.

,y Rois-ERT r. 'DARBYQ i

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