US2456075A - Rod deck screen with rubber-covered cylindrical clamping means - Google Patents

Description

14, v R. c. NEWHOUSE 2,456,075

ROD DECK SCREEN WITH RUBBER COVERED CYLINDRICAL CLAMPING MEANS Filed Nov. 3, 1944 Patented Dec. I4, 1948 UNITED "STATES PATENT OFFICE I s 2,456,075 f R01) DE K scR EN wi'iif 'ER-ED CYLINDRICAL CLAMPING' Ray 6. Newhouse, wauwatosag; Wis,-, assigno ij to Allis-Chalmers Manufaoturingfiompany, Milwaukee, Wis"., a corporation of Delaware v Application November 3, 1944, Serial No senses claims, (01. 2159-395) This invention relates to the construction of parallel rod screen decks for material separation, particularly of the type in which the bars or rods extend longitudinally of the screening surface and are designed to be individually removable for replacement.

It has been found desirable to support the rods in screens of this type intermediate their ends in a manner to sprin the rods upwardly so that they tend to remain in a position and tightly pressed against. the rod end supports by their own resilience, the ends being seated in sockets in the screen; frame.

One of the problems encountered in such screens is the difiiculty of replacement of rods due in the necessity of holding the rods inflexed condition while inserting them endwise into their corres onding sockets, and in operation, the socket s tend to become excessively worn and the rods loosened.

It is an object of the present invention to provide an improved rod deck scr'eerist'ru ctu're' in which the rod ends may be firmly clamped in position to prevent their becoming loosened by wean Another object is to provide suclra screen structure in which. insertion-of the rods is simplified by means providing for the opening of a large slot in the rod: end supporting member into which a rod end may be readily inserted and means, to clamp the rod firmly in place after insertion.

Still other-objects and advantages may appear as" described Hereinafter with reference to the drawing, in'which: 1

g. 1 is a top elevation of'a screen according totheinvention;

Fig. 2 is a fragmentary longitudinal sectional ;ew onan enlargedscale taken on the'line IP-I-I ofFig. 1;

Fig.3 isafragmentary front elevation of a'portionof the screenof Fig. 1 showing the clamping mechanism on an enlarged-scale Fig; 4 is a cross-sectional'view taken on" the line IVe-IVof Fig. 2.-

"l he drawing illustrates a preferred embodimerit ot the invention in which a screen formed On a rectangular; rigid frame having side memhers: I andat least one pair of end members 2 sin-r113 rigidly connected with, and extending transversely between thesi'cle members 1-. The end: mer'nbers- 2 and 3, together with an interi'nediate transverse member spaced therebetween, which maybe called a camber bar, and a movableclamping bar 5-, form the supports for a screen surface 1' formed of a plurality of par allel rods. 1-;

The end members Z and 3 may consist of 12 beams, channels, or other structural forms, hav ing horizontal ledge portionssand- 9, respectively, extending towards'each' other. The ledge 9 ofr end member 3 may: he provided with a removable or integral rod-end engaging wear plate [1. on its under side, having recesses or sockets I I laterally spaced therein to receive the adjacentends of parallel rods- I! inserted longitudinally from the directionof' end member 2 and passing over in termed-rate member 4', which has; its upper; edge above the generallevel ofledges-l a and ii) and-may be provided on its upper edge with a pad t2 of rubber or other durable resilient: material and may or may not be provided with laterally spaced grooves l-2' for spacing the rods l.-'.- The end member 2 may have onthe undersideof its ledge portion 81 a wear plate; I 31- either' integral therewith, or removably attached thereto r having a series of longitudinally extending laterally spaced recesses or sockets suchas grooves 3' in its lower surface correspondinglto'the sockets l.-|-' inwear plate l l-, and alined therewith. I

Obviouslythe socket-s; H and: grooves {3' may be formed directly in theledge portions 3' and .9 of end members 2 and-3'. Whereplates- H and I3 are used, however, as shown" in the drawinagthe'y are, preferably; removably secured aseby'bolts; Hi to theirrespectiveendmembersil and 2- or ledges new i t Y .l

The sockets II and grooves l3"- form long} tudinally alined,;- laterally spaced pairs of recesses, sockets 6r rod: end seat's adapted to engage the uppers'urface's of the ends of; rods 1, s'.pri;1n'g int9 place over Camem ert The length of rods 1'' is sufficiently greater than the distance between ledges 8." arias. to snow the opposite ends to be caught" and retained. again i upward displacemerit under'tlieiledies' case'- 9" when. inserted: and flexedo'ver oambe'fbar 4 w I IITherods 11 may b fori'r'ied' npr aiauy straight, ofresilierit steel, or o't'hefs'uitalile' matriarching an elasticity suflicient, to permit shortening byile'izio'ii suifi'c'iently' to allow'ih'ser't ii of o'rieind 1 cy of the fleiied rod to its normally straight. fans will. cause it" to be Held" in place. against ntermediate member; 4 with its. ends firmly pressed;upwardly'sgaih tunder surfaces iof led g'es ligand, 9; or the respective wearing plates MH and Mounted ransversely between side members; I

low cylindrical member having eccentric end-extensions l4 engaged in bearings l5 mounted on side members I. any suitable means to angularly rotate the endextensions I4 and bar 6 about theaxis' of end- Actuating mechanism may l0 Clamping bar 6, according to, the 'inventio may be formed as shown in thedrawing, as aholselectively rotatable relative to said rods to present a plurality of different portions for actual contact with said rods. I 2. A parallel rod material separating screen comprising a rigid rectangular frame, laterally spaced pairs of alined sockets in opposed faces of a pair of parallel frame members, said sockets having downwardly facing rod end receiving seats, a plurality of substantially rectilinear spring metal rods eaclr having its extreme ends seated in an alined pair of said sockets, and a extensions I 4, as for example hand bar I! and ratchet mechanism I8. The bar 6 may be covered with a heavy rubber sleeve 6 which forms a Wearing" and silencing surface which is selectively rotatable relative to bar 6 for renewal of the actual wearing surface bearing against the rods w l v I It willbe clearthat grooves like l3 may be used in place of sockets H, if a corresponding additional clamping bar 6 (not shown) is employed to engage thecorresponding ends of rods 1' under ledgeB. w I

' With clamping bar 6 inreleased position, the screen surface maybe readily formed by inserting the'ends of rods 1' in sockets l I, then indi vidually flexing rods 1' to" shorten them-sufficiently to enable the freeends to be inserted under the opposing ledge 8. The rod ends may be moved laterally to engage the proper seat in a groove 13"; Afterinsertlon of all rods I clamping bar 6 is moved into clamping engagement with the rod ends by hand bar [1 and retained in clamping relation by ratchet mechanism I8, or-other suitable mechanism.

Preferably, steel wearing plates H with sockets -ll of limited depth'are used at the end of the screen surface ltowards which material is meant to move over the screen, thus fixing the rods 5 against movement in that direction. This provides an almost indestructible socket at one end, while at the feed end, towards which there is no tendencyforthe rods 1 to move, the rod ends are receivable in a broad opening slot when the clamp bar 6 is relaxed, and are firmly clamped in spaced relation in grooves l3 when the clampingbar 6 is tightenedi" It will be readily understood that this inven tion provides a simple, durable and easily re paired screen,- andthat, while specific structure has been described and illustrated, the invention is not limited to the precise structure so described and illustrated, but is intendedto include such equivalents as may occur to persons skilled in the art to which it appertainswithin the scope of the appended claims.

It. is claimed and desired to secure byLetters Patent:

1. A parallel rod material separatingscreen comprising a rigid rectangular frame, laterally spaced pairs ofalined sockets in opposed faces of a pair of parallel frame members, said sockets having downwardly facing individual rod end receiving seats, a plurality of separate substantially rectilinear spring metalrodseach having its extreme ends seated individually in an alined pair of said sockets, and a clamping bar operatively mounted on saidframe adjacent and parallel to one'of said socketed frame members for moveclamping bar operatively mounted on said frame adjacent and parallelto one of said socketed frame members for movement into engagement with the lower surfaces of said rods adjacent their ends to clamp said rods upwardly against said seats, said clamping bar being cylindrical in form and having end extensions eccentric thereto journaled in said frame and clamping bar adjusting mechanism on said frame operatively engaging said extensions to move said bar angularly relative to the axis of said extensions in clamping and unclamping relation to said rods. 3. Means for supporting the ends of a plurality of parallel rods in laterally spaced relation comprising a frame, a frame bar having a plurality of laterally spaced parallel grooves in an under surface thereof, a cylindrical clamping bar eccentrically journaled in said frame for angular movement in parallel relation towards and away from said under surface of said frame bar to clamp said rod ends firmly in said grooves and means for holding said clamping bar in clamp ing relation. v I

4. Means for supporting the ends of a plurality of parallel rods in laterally spaced relation-come prising a frame, a frame bar having a plurality of laterally spaced parallel grooves in an undersurface thereof, a cylindrical clamping bar 'eccentrically j-ournaled in said frame for angular move ment in parallel relation towards and awayfrom said under surface of said frame bar to clamp said rod ends firmly in said grooves, said clamping bar having a sleeve like rubber cover thereon and rotatable on the axis of said bar to selectively present different wearing surfaces to said under surface, and means for holding said clamping bar in clamping relation.

5. A parallel rod material separating screen comprising a rigid rectangular frame, laterally spaced pairs of alined individual rod end receiving sockets in opposed faces of a pair of parallel frame members, said sockets having rod end engaging seat portions generally in the plane of said frame and facing the same side of said plane, a camber bar in said frame parallel to and spaced intermediate said socketed frame members andhav ing a rod supporting surface facing in'a direction opposite that in which said seat portions of said sockets face, a plurality of separate generally rectilinear flexible resilient rods each having'its opposite ends individually, seated in an alined pair of said sockets and its intermediate portion sprung over said rod supporting surface of said camber bar, the location of said rod supporting surface of said camber bar relative to the plane of said seat portions of saidsockets beingsq chosen with relation to the normal unstressed 5 6 form and thickness of said rods that said rods REFERENCES CITED f i s 2???? 5 59 23? lmder The following references are of record in the e as 10 s ress w 0 en s 0 re am em 1n pos file of this patent:

tion in parallel laterally spaced relation in said frame, and a clamping bar operably mounted on 5 UNITED STATES NTS said frame adjacent and parallel to one of said Number Name t socketed frame members for movement into en- 730,32 sneide Jan. 24, 1905 gagement with the surfaces of said rods adjacent 4 5 Williamson Jan 11, 1910 their ends to clamp said rod ends firmly against 0, 1 Robinson May 31, 1910 said rod end engaging seats of said one of said 10 1, 1 ,9 7 Mueller eb, 3, 1927 soc ete frame m m r 1,919,485 Soldan July 25, 1933 2,172,551 Symons Sept. 12, 1939 RAY NEWHOUSE- 2,374,775 Parks May 1, 194

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