US1756037A - Grate and pallet structure - Google Patents

Description

April 29, 1930.

E. w. SHALLOCK 1,756,037

GRATE AND PALLET STRUCTURE Original Filed Jan. 9, 1928 2 Sheets-Sheet 2 Qff/venf' AWN-Q. M, Quit W. MLWF/My 3% Patented Apr. .29, 1930 p 1 755 037,

UNITED STATES. PAT NT OFFICE w. srmLLocI; or cnreaco, ILLmoIs, ASSIGNOR 'ro mnarcur'onn LAMATION- courm, or CHICAGO, ILLINOIS, A conrorearxon or new roan GBATE AND PALLET STRUCTURE Original application filed January 9, 1928, Serial K052415384. Divided and this application fi led December 3, 1928. Serial No. 323,457.

This invention relates to pallet and grate ing the sections thereto. While this strucstructures, and more particularly to a structure is highly efficient it necessitates the use ture of the character stated for use with sinof a specially constructed pallet frame. My

tering machines of what is known as the present invention has to do more particularly Dwight and, Lloyd type. p with means-whereby a grate structure'com- 55 Pallets u d in-ore'sintering machines are posed of a plurality o grate sections can commonly ft. and more in width and are readily be applied to a pallet frame of exist- Y provided with a single grate corresponding, F ing construction and now commonl used in' substantially, in width and length to the sintering machines of the type re erred to.

width and length of the pallet, that is, the Further objects and advantages of rnyin e0 grate-used in a pallet of this sort measures Vention will appear from the detailed deapproximately 6 ft. in width by 2 ft. in scriptron.

length. During the sinterin operation the In-thedrawmgs: grate is subjected to intense lieat and is apt F1g.1 s an end perspective view of a pallet to buckle or burn out so that it has to be reand grate structure in accordance with my inplaced. These grates are rather expensive v nfilon, One, of the grate sections being and, due to their'size, are diflicult to handle 'omltte Q I I v by hand. This means a considerable lossv in g- 2 1S aplan View of ll' f the g t time and labor aswell as expense in replaci ns.

2o i th grate t commonl happens th t b t F g. 3 1 s a s1de view of one of the sections. a relatively small-area of tlie grate is burned g 4 18 a section taken substantially on out or war ed but, under present conditions, 4-4 of Fig. 2. this necessitates the replacing of the entire F g- 5 1S a fragmentary detail view,'in perate. spective, of the pallet frame taken on a line 25 One of the main obje t of my in ti extending longitudinally of the same and in i t ovide a pallet and a ate structure advance of the transverse center thereof. 4 in which the grate is compose of a plurality Flg. 1s a transverse sectionthrough the of grate sectlon's which can be quickl 're-' pallet, Including the grate structure, partsmoved'and replaced. In the event of urng Shown in elevation- I ing out or warping of any of the sections this ig- 7 a longitudinal sectional View particular section can bereplaced without gh the P s wing the g Strucany necessit for replacing the entire grate ture applied, parts being shown in elevation. structure. l have also found that b using Fig. 8 is a fragmentary sectional view relatively short or narrow grate sectlons the ak n substantially Q11 line 88 of Fig. 7,

at tendenc thereof to warp is much less than the adjacent end portions 'f oftwo of the grate the ten ency of a one iece grate of. the full sections width ofv the pallet. his is due, probably, section. p to .the more uniform distribution of heat Fig. 9 is a perspective detail of the inner throughoutthe smaller sectionthan is posada ter. sible when using a one piece grate of rela- FIg. 10 is a perspective detail of one of the '9 tively great extent. outer adapters. I Inmy copendinfig applicationfor grate and Fig. 11 is a detail of modified fastening pallet structure, ed anuaryg); 1928, Serial means. p I No. 245,284,-whichhas matured into Patent I have illustrated my inventionas applied 45 No. 1,722,344, dated July 30, 1929, ofwhich to a pallet coin rising a rectangular frame.

-thisappl1cat1on is-a division, I have shown 1 ha side are 2 which are connected a pallet having a frame of s ecial construcby bars which may betermed the end bars, t1on and a grate composed o a plurality of and intermediate bars 1 parallel to grate sections having elements cooperating bars 3. This'frameisprovlded, at each side W with elementsof the pallet frame for securthereof, with depending brackets 5 in which shown broken away and in are secured stub shafts 6 upon which are mounted flanged rollers 7 which travel upon the track of the sintering machine.

The pallet, in practice, is disposed transversel of the machine and travels lengthwise thereof upon the track. I have, therefore, referred to the greater dimension of the pallet frame as its width and the less or shorter-dimension as its length, referring to the relation ofthepallet to themachine. Each of the side bars 2 is provided, at its upper portion, with an outwardly inclined flange 8 to which is secured in a suitable manner, as by riveting, a side plate 9. The bars 3 and 4 are connected, at suitable intervals, by cross members 10. Each of these members com-.

prises two web elements or fillets 11 formed integrally therewith and with the bars connected by such cross members. These-pallets define a substantially V-shaped socket 12. The cross members 10 materially reinforce the frame 1 as a whole and reduce likelihood of warping of the bars thereof. The pallet so far described is of known construction, being that which is commonly used=in sintering machines of the type referred to. y

In order that a sectional grate may be used with this pallet frame I provide adapters which seat upon andv are secured to the cross members 10 at the transverse center of the frame. In the construction shown, there are four bars connecting the side bars 2 of the frame and, consequently, a I employ three adapters. The central adapter 13 is of substantlally V-shape and is provided, in the outer face of each arm, with a groove 14 which receives the inner edge portion of fillet 11. The adapter 13 is provided, at its lower or vertex portion, with an opening 15 which receives a bolt 16 passing through cross member 10, a nut 17 being screwed onto the upper end of this bolt and bearing against the adapter so as to secure the same, in co-operatlon with the bolt, to the cross member.

Preferably the head of the bolt 16 is countersunk in cross member 10 as illustrated. Each arm of the adapter is provided with an extension 18-at its upper end which is inclined upwardly and inwardly of the adaptor at 19, and is provided with an outwardly extending web 20 disposed to contact with the bar 4 adjacent the upper end of the arm. The arms of the adapter, and the extensions thereof, define an opening 21 ,Whichaccommodates the upper end of the bolt and the nut, the upper portion of this opening being substantially of dovetail shape and being restricted at 22. When the adapter is secured to the-cross member 10 it is held securely in position and against movement transversely of the same by the fillets 11 which engage into the grooves 14. An adapter 23 is mounted upon each of the cross pieces 10 between the hars3 and 4, this adapter being similar in all respects to the adapter except that i the opening 24 thereof is ofimenter.

The adapters receive securing lugs or heads 25 depending from grate sections 26 at the inner ends thereof. Preferably, though not necessarily, each grate section is further provided with a reinforcing rib 27 which e'xtends from the head 25 to apoint adjacent the outer end of the grate section, this rib being disposed centrally of the section. The rib and the head are preferably cast integrally with the section, as illustrated. The section'is further provided, at its 'outer end 7 and in its upper face, with a central depression 28 and with two lugs 29 at each side of this depression. This depression is adapted for reception of a securing pin 30 which is inserted through a nipple 31 (Fig. 6) threaded through flange 8 of the frame.

The pin is releasably secured in the nipple in a suitable manner, as by a cotter pin, or a other suitable member 32 inserted through the nipple 31 and pin, 30. In Fig. 11 I have shown a modified form of securing means for'the outer end of the section, such form including a pin 33 which is inserted through flange 8 and is provided, at its inner end, with a head 34 disposed between lugs 35 on the upperrface of section 26. -'A cotter pin 36 is inserted through the outer end of pin 33 and serves to releasably secure it in position.

'The grate is illustrated as formed of six sections 26, each equal in length to one-half the sides of the pallet frame by the pins and lugs in the manner described, the sections be-v Y ing thus effectively secured to the pallet and held against-undesirable looseness or play. In the event of warping, burning or other damage to an of the grate sections, such section can rea 'ly grate structure.

By providingthe adapters mounted upon the cross members of the pallet frame in the manner illustrated and described, a grate structure composed of a plurality of inde pendently removable and replaceable sections can readily be applied to a pallet ofpresent construction such as is commonlyused 1n slnterlng machines.

.The outerends of these sections are then secured to be removed and replaced without disturbing the other sections of the members defining a the. cross members, I cross members and seating upon the fillets,

ing the sections The grate sections are provided with openings of suitable type and disposition to permit ready flow of air and other gases through the sections during combustion of the material supported thereon during the sinteringoperation, as well understood inthe art. The sections shown are of What is known as the pinhole type, though any other suitable or preferred type of section may be employed. While I have described my invention as applied to a pallet adapted for use with the Dwight and Lloyd type of sintering machine, I do not in any way limit myself to this one type of pallet since, in its broader aspects, it may be applied to pallets of other types with advantage.

.What I claim is:

1. In combination, a pallet, an adapter member detachably secured to said pallet and having an upwardl restricted recess, a grate section having a ownwardly enlarged de-' pending head entering said recess'and interlocking therewith, and diagonal corner pieces on the pallet interlocked with said adapter member.

2; In combination, a pallet lrame comprising side bars and cross bars extending across the frame and connecting the side bars, cross members connecting said cross bars and comprising fillets connecting said cross bars and adapters secured to the said fillets and the adapters having cooperating means holding said adapters against movement across the frame, and grate sections seating upon the frame bars and having releasable interlocking engagement with the adapters.

3. In combination, members bracing said frame, each of said members defining a substantially V-shaped socket, adapters of substantially V-shape fitting into said sockets and cross-members, the arms of said adapters having grooves receiving the lateral portions of the cross-members, and grate sections seating upon the frame, said grate sections and the adapters having cooperating means releasably securing the sections to the adapters;

4. In combination, a allet frame, crossmembers bracing said ame, each of said socket, adapters fitting into the sockets and secured to thecross members, and grate sections seating upon the frame, said grate sections and the adapters having cooperating means releasably securto the adapters. 5. In' combination, a pallet frame, crossmembersbracing said frame, each of said members comprising fillets defining a substantially V-shaped socket, adapters fitting into said sockets and secured to the crossmembers, said adapters having grooves receivlng'the fillets and each having an opening forreceptionof a coacting securing mema pallet frame, cross I her, and grate sections mounted upon the frame and having depending securing members engageable into said openings and cooperating with the adapters for securing the grate sections to the frame.

6. In combination, a pallet frame comprising side bars and cross-bars connecting said side bars, cross-members connecting the crossbars, adapters seating upon the cross-members and disposed between the cross-bars and held thereby against movement lengthwise of the pallet frame, means for securing the adapters to the cross-members and for holding said adapters against movement across the frame, and rate sections seating upon the frame, said grate sections and the adapters having cooperating means releasably securing the sectionsto the adapters.

7. In combination, a pallet frame comprising side bars and cross-bars connecting the side bars, cross-members connecting the crossbars, adapters seating upon and secured to the cross-members, grate sections seatin upon the frame and disposed end to end in a utting and non-overlapping relation, and cooperating means carried by the grate sections and the adapters for releasably securing the section's to the adapters- In witness whereof, I hereunto subscribe my name this 23d day of November, 1928.

EDWARD W. SHALLOGK.

secured to the

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