US1851380A - Sand blast conveyer - Google Patents

Description

Marbh 29,1932. BRIGGS 1,851,380-

SAND BLAST CONVEYER Filed Oct. 12, 1928 owner part Eober? E B/ 'ggy 1 ii-gs of vhich' a. Figure l isasi Patented Mar. 29',*1 32 UNHTED Steam rarest" QFFH'CE ROBERT E; BRIGGS,'OF COLUMBUS, OHIO, ASSIGNOR TO THE JEFFREY MANUFACTUR? ING COMPANY, (if? COLUMBUS, OHIO, A CORPORATION OF OHIO SAND BLAST convnYna Application filed October 12, 1928a Serial No. 3 125186.

The present invention. relates to certain new and useful improvements in sand blast conveyers, of the type adapted to carry castings, andsimilar objects through theeiiec-d scribed, means to v protectthe conveyermechanism from the destructive action ofthe sand blast. V

. Themeans Wherebyl attain thisobjct are fully set forth the following specification and illustrated in the accompanying draw- I de elevation of one embodi ment of my invent on,

I Fig. 2 is a cross sectional View onian enlarged scale taken alongthellne II- II of Fig.1.,

lEighB is a fragmentary plan view of the conveyer illustrated.in Fig. 2.

Fig.4 isa longitudinalsectional view taken" alongthe line IV IV of Fig.3.

" Like numeralsfrefer to similar parts. in the 25 several figures.

1 For purposes of illustration I have some- What diagrammatically shownzin Fig. 1 of the drawings, a structure suitable for thesup- =86 port of a conveyer embodying my presentinvention. As hereshoWn-the material carrying element is supportedupon an elongated frame comprising a plurality of vframes includinguprights and crosspieces lto the uprights .of which are attached the longitudinallyfextending angle bars 2 and 3 the horizontally projecting fiangesot which con-1 stitute tracks along hichthe chains 4 and. 5 ofthe material carryingelement ofthe con-a of the frame thus formed are sprocket Wheels. 6 and'frfa'round which the chains 4 and 5 travel. Suitable power connections,1 not shown in the drawings, may be provided to 1 cause the rotation of these sprocket Wheels,

; lappingside plates orlinks8 and 9 joined together by suitablepintles 10 in the manner veyer travel. Suitably mounted at the ends but as such devices are well understood in' Well understoodfiii] the art; Rotatably mountedupon the pintles' 10 are rollers 11 adaptedto travel. along the track angles 2 and 3 to supply an;an ti-friction support for th'eload upon 'theconveyer. The chains 4 and 5 are connected together by cross rods 12 which extend through suitable apertures, in

the outwardly projecting extensions 1 3 :of" the side bars 9. Spacing sleeves l are mounted upon the cross rods l2 and against the ends of these, sleeves, the extensions 13 are firmly clamped by-the nuts, 15 screwv threaded to the cross rods 12. The spacing sleeves l4 which, constitute the material carryingelenient of tlieconveyer; are prefer}- ably formed of metallic tubes having a coat- 16 offresilient abrasion resist ng v ma-. terial; preferably a suitable preparation of rubber vulcanized thereon b'y Which the tubes are protected T from the {destructive actionio-f the sand blast used to clean the castr-=v ings', or other objects,Whilebeing carriedby the conveyer Instead of ,vulcanizing a coating of ruhberupon the spacing sleeves 14, lengths o'f rubber tubing maybe slipped over these rods form protective coyering therefor. :Attached to the uprights .1 are longitudinally extending angle bars 1'1 having inward ly projecting flanges entending over the roll ers 11 of the upper run of the conveyer chains. Cooperating with the angle bars 17 to'p'rotect the rollers and draft elements from the de-;

structive action of a sandblastdirected upon articles-carried by the conveyer; an endless sectionaland flexible shield comprising a' series of angle plates-18 are secured to the outward extensions 13 of the links 9." One plate 18 is'secured to each link 9, and therefore partakes of the same movements as these links. a The horizontal flanges of these plates 18 are arranged so that they overlap the hori zontal'flanges 17 'ot the; stationaryshield plates. The shield platesl8beingsecuredto 21;

the extensions 13 by means of rivets and the rods 12 extending therethrough, constitute a series of shields arranged in articulated relationship travelling with the draft. elements to form asubstantially continuous flexible shield Whichftravels above the stationary shield 17 the and rollers 4 on the upper run of the conveyer and beneath the rollers and tracks 3 on the lower run of the conveyer. The plates 18 being spaced slight-1y apart as shown clearly in Figure 3 allow flexibility while passing around the sprocket wheels 6 and 7. Angle bars 19 and 20 supported by the cross pieces and uprights 1 form an inverted channel which forms with the tracks 3. a substantial housing to afford sin-ii-lar protection to the chains and rollers of the lower run of the conve er.

n the construction above described, I have provided a conveyor adapted to support and transfer castings, or similar objects, during the process of their cleaning by sand blast or similar instrumentalities wherein the moving parts of the conveyer are effectively protected from the destructive action of the cleansing agent. It is to be understood, however. that I do not limit myself to the precise construction here shown since the apparatus may be subject to wide variation as to details without departure from the spirit of my invention.

What I claim is 1. In va conveyer, a continuous flexible supporting element including vertical side links, and a shield carried by and depending from said supporting element to protect said side links.

2. In a conveyer, a continuous flexible supporting element including vertical articulated side lin'ks, anda series of rigid laterally projecting members carried by said links and 00- operating with each other to form a substan tially continuous protective shield for said links.

3. In a conveyer, a continuous draft chain including vertical side links havin vertical outward extensions, rollers for said links, a stationary shield plate overlapping said rollers, and shield plates secured to said outward extensions and overlapping said stationary shield plate to form a substantially continuous protective shield for said rollers and draft chain.

4. In a conveyer, an endless draft chain including draft links and flight attachment links, said flight attachment links being extended laterally to points in close proximity to the draft links to form a shield for the draft chain.

5. In a conveyer, an end-less draft chain including draft links and flight attachment links, said flight attachment links being extended beyond the draft links, and lateral extensions carried by the link extensions and overlapping the draft links to form a shield therefor.

6. In a conveyor, an endless draft chain including articulated links, the inner links of the chain being extended laterally to shield the draft chain, and carrier flights carried by the extended portions of said inner links.

7. In a conveyer, an endless draft chain including articulated links, the inner links of the chain being extended to shield the draft chain, carrier flights carried by the extended portions of said inner links, and shield plates extended laterally from the inner links toward the outer links of the chain.

8. In a conveyer, the combination with an enclosed track; of an endless draft chain running on said track and including side links extended to form a wall of said enclosed track.

9.. In a conveyer, the combination with a pair of vertically spaced horizontal shield plates constituting parts of an enclosed track; of an endless draft chain supported between said plates and including vertical side links extended to overlap the space between said shield plates and to enclose the draft chain within said enclosed track.

10. In a conveyer, the combination with a pair of vertically spaced horizontal shield plates constituting parts of an enclosed track; of an endless draft chain supported between said plates and including vertical side links extended to overlap the space :between said shield plates, and auxiliary shield plates overlapping the space between said link extensions and said first-named shield plates to enclose the chain within said enclosed track.

11. In a conveyer, the combination with a pair of vertically spaced horizontal shield plates constituting parts of an enclosed track; of an endless draft chain supported between said plates and including vertical side links extended to overlap the space between said shield plates, and auxiliaryshield plates secured to the extensions of the side links of the chain to overlap the space between said link extensions and said firstnamed shield plates to enclose the chain within said enclosed track.

12. In a conveyer, the combination with a pair of vertically spaced horizontal shield plates constituting parts of an enclosed track; of an endless draft chain supported between said plates and including vertical side links extended to overlap the space between said shield plates, and auxiliary shield plates secured to the extensions of the side links and being substantially co-extensive therewith to overlap the space between said link extensions and said first-named shield plates to enclose the chain within said enclosed track- 13. In a conveyer, the combination with a pair of vertical spaced horizontal shield plates constituting parts of an enclosed track; of an endless draft chain supported between said plates and including vertical side links extended to overlap the space between said shield plates, and auxiliary shield plates secured to the extensions of the side links, and conveyer elements carriedby said chain and serving to attach the auxiliary shield plates to the link extensions to enclose thechain within said enclosed track.

14. In a conveyer, the combination with a pair of vertically spaced horizontal. shield plates constituting parts of anenclosed track; of an endless draft chain supported between said plates and including vertical side links extended beyond the outermost shield plate, and auxiliary shield plates carried by extensions of said side links tooverlap said outermost shield plate;

In testimony whereof I'have hereunto set my hand.

ROBERT E. BRIGGS;

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