US1910985A - Grate bar fastener - Google Patents

Description

May Z3, 1933. w w5o 1,910,985

GRATE BAR FASTENER Filed May 18, 1931 I 1/ zz EVE/V702 Patentedlvlay 23,1933 i i i y i w TAT N eaA rE BAR rns'rmvna i lip ncatidn filedjna 1a, ies1 .seria1, m. 538312;

invention relates to new land useful the fastening bar extendsand in which said lmprovementsfinf a grate bar fastener, and fastening bar is rotatable, said transverse has for one otlts Objects to prov de an e2 r openings having entrance slots leading ceechnglysimpleand efiect vedevlceof this thereto of a Wldtll substantially the same y 5 character totemporarily hold or removably as the shorter diameter or minor dimension; 55

secure grate bars against accidental disof the fasteningi barto permit the passage placement regardless of the general conofthe grate bar over the fastening bar, but hguration of said barsort lieapphance lnor preventing the removal of the grate bar on which such barsare assembled. i When'the fastening bar is turned sothat its 3 The inventiomisapplicable tostationary longer diameter or major dimension lies 6 or movable grate barseiorwgrate structures acrossthe entrance slot. p a a, t or, all kinds regardlessofkthe intended use, With these and other ends in view, this Whether furnaces, boilers, pallets, sinter'ing invention consists in the details ofconstru Il1 tCl1lI1s or anything"e1se,ibutit is particution-and combination ofelements hereinlarly valuablefor use for holding bars on a after set forth and then specifically desigsupporting frame that has to be tilted or nated by the claim. M i inverted. y i y i Inorder that those skilled in the art to Another object of the invention isto roflwhich thisinv ention appertains may undertatably mount: fastening bar or vmember stand .hovvto make and use the same, I will 1520 in a suitable support or supporting frame, describe its construction in detail, referring which fastening bar is fiat por oblong in by numerals to the accompanying drawing crosssection so as to haveshort and long forming a part of this application, in diameters and to position said fastening bar vvhich: i y y y forjcooperationflwitlr a part or parts of a ;Fig-. lyisya plan view of a conventional Z grate bar or bars whereby when the longer grate structure showing a plurality of grate diameter ofthe fastening bar isin a subbars mounted upona support having, stantia'lly horizontal position, all of the interlocking engagement with a iastening grateYbars will beziheld gagainst accidental bar rotatably mounted; in the support as emdisplacement or removal but when the fasbodied in myrinvention. I a i a 30 tening bar is turned at right angles any of i Fig. 2is a fragmentary sectional View on 801 the gratebars may be removed or replaced. the line file-20f Fig. 1.

a A further object of the invention is a to, Fig. 3 is a fragmentary frontelevationof i provide forremovably mounting fastenthesupport and the fastening bar as well as ing barvand vvliich when inplace canbe rothe component partsthereof, but with the i a v i i W gratebars removed A still turtherobjeot of the invention is ,4 Fig; Lisa: fragmentary sectional view on to provide a grate fastener including, in decline 4-4 of Fig. 3. i y y i y i combination, any suitablersup port orsup- ;Fig., 5 is a slightly enlarged"fragmentary portingqframe having an opening; through sectional view on the line 5- -5 of Fig I als onelof the Walls ofsutiicient size to permit In carrying out my invention as herein "thejgpassage of a fasteningcba r which is embodied, Gi-epresents a suitable supporter rectangular in cross sectiomthe ends of said frame-of any desirable size or, configuration fastening bar {being fashioned to prov de in cludingend Walls 7 so called for conventl'unnions ournailedv 1n the wallswof ,the ienoe of description, on which the endsof support, the bearing for i one of the trungrate bars 8, of suitable formatiomrest when 9 nionspreferably being a sleeve fitted into in operative position. Eachgrate bar is inthe open ng 1n" thesupport through wh ch dependent of the others and may be provided the {grate bar may pass, sa d fastening bar :with any suitable spacing means 9 located at coopemating with grate bars provided With any. suitableplace along thebar and; of any transverse circular openings through 'yvhich desirable :number. Each gratebar is also 0 held against longitudinal movement in any desirable manner, as providing the same with depending lugs 10 which engage the contiguous parts of the frame. Another obvious way to prevent longitudinal movement is to set the ends of the grate bars in a recess or recesses in the end walls 7 of the frame. Of course, the parts are so fitted as to give a certain amount of play which will provide for limited longitudinal or transverse movements of the several grate bars.

Each grate bar is provided with a transverse circular opening or hole 11 having an entrance slot 12 leading thereto and I prefer that the hole and the slot be formed in a lobe 13 depending from each grate bar midway the length thereof so that lips 14 are produced for a purpose to be presently described. I

The support or frame 6 also includes a rear wall 15 and a front wall 16, the former having a small opening therethrough to .provide a bearing for the rear trunnion 17 of the fastening bar 18 while the front wall has an opening 19 therethrough, preferably circular in shape, although other shapes can be utilized, and at least as large as the opening 11 in each grate bar and in said opening 19 is removably mounted a sleeve 20 in which a hole 21 is formed to act as a bearing for the forward trunnion 22 of the fastening bar 18. Said bar may be formed with a tool hold 23 for the reception of a suitable tool, handle or crank for readily rotating said fastening bar.

The intermediate part 24: of the fastening bar, or the portion between the trunnions,'is of oblong shape in cross section so as to have a long dimension substantially the same as the diameter of the openings 19 and 11 and a shorter dimension substantially equal to that of the width of the slot 12 so that a grate bar may be passed over the flat portion of the fastening bar 24 and the latter then rotated within the opening 11. With the fastening barin the position shown in Fig. 2, so that its greatest dimension extends'crosswise of the slot 12, said grate bars cannot be displaced because the lips 14' under-lie the flat portion of said fastening bar but when said fastening bar is rotated" a quarter turn so that its greatest diameter will be vertical and in alignment with the slots 12 any one or more of the grate bars maybe readily lifted and removed from the fastening bar.

"he fastening bar is also provided'with means to prevent accidental withdrawal thereof or undue longitudinal movement which means may be in the form of pins 25 and 26, said pins being so mounted or constructed as to prevent the same from dropping out when the fastening bar is rotated or when the complete structure is tilted or inverted. One of said pins, as 26,.acts as a holding means or bolt to maintain the fastening bar in a grate bar fastening position or with the greater dimension of the flat intermediate portion in a horizontal position, by engagement with a lug 27 formed on or carried by the front wall 16. This pin can also be utilized to rotate the fastening bar and therefore the tool hold could be elim- .inated.

When originally assembling all of the grate bars in or on their frame, they can be placed in position and the fastening bar 18 then projected through the opening 19 in the front wall 16 of the frame and through the holes 11 in all of the bars until the rear trunnion 17 is set in its hearing. The sleeve 20 can then be placed upon the forward trunnion 22 and inserted in the opening 19 and finally the pins 25 and 26 inserted, with the pin 26 projecting into or through the lug 27 at which time all of the grate bars will be fastened in position against accidental displacement. By reversing the above ac tions, all of the grate bars can be removed. After the entire structure has been assembled and it is desired tov remove or replace one or more, but possibly not all, of the grate bars, the pin 26 is withdrawn from the lug 27 and the fastening bar rotated until its longer dimension is vertical or in alignment'with the slot 12. This unfastens the grate bars and the one or ones to be removed or replaced can be readily taken off or put back on the fastening bar and when everything is ready, the fastening bar is rotated in the opposite direction until its longer dimension is in a horizontal position crosswise of the slot 12 and so long as the fastening'bar is in this position the grate bars cannot be removed.

From the foregoing description, it will be obvious that I have provided an exceedingly simple and effective means for fastening gratebars in position to preventtheir accidental displacement as when the frame is tilted to a steep angle or actually inverted.

Of course, I do not wish to be limited to the exact details of construction herein shown'and described as these may be varied within the limits of the appended claim without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and useful is p A grate consisting of a stationary frame having an opening through one of its walls, a sleeve in said opening, a fastening bar having a fiat intermediate portion passable through said opening and journalled for rotation in the rear wall of the frame and said sleeve, a plurality of grate bars resting on said frame each having a transverse opening therethrough and a slot leading thereto,

said grate bars being individually removable or replaceable when the flat portion of the fastening bar is in alignment With the slots and held against accidental displacement when the flat portion of the fastening bar is crosswise of the slots, a 111g on the frame adjacent the position of the fastening bar, and means carried by said fastening bar for engagement with the lug t0 normally hold the fastening bar against rotation.

In testimenywhereof, I have hereunto affixed my signature.

WVALTER H. CLAWSON.

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