US451652A - David john morgan - Google Patents

Description

(No Modem -11. J. MORGAN.

LOOKING FIRE BAR. No. 451,652. Patented May 5,1891.

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UNITED STATES ATENT rrrce.

,DAVID JOHN MORGAN, OF CARDIFF, ENGLAND.

LOCKING FIRE-BAR.

SPECIFICATION forming part of Letters Patent No. 451,652, dated May 5, 1891. ppli ation fi October 22, 1890- Serial No. 368,939. (No model.) Patented in England March 3, 1890, No. 3,344.-

To all whom it may concern:

Be it known that I, DAVID JOHN MORGAN, a subject of the Queen of Great Britain, and a resident of Fitzhamon Embankment, Cardiff, in the county of Gla1norgan,England, haveinvented certain new and useful Improvements in Fire-Bars and Furnace-Grates, (for which I have obtained a patent in Great Britain, No. 3,344, dated March 3, 1890,) of which the following is a full, clear, and exact specification.

My present invention relates to furnacegrates and fire-bars used therefor.

Hitherto fire-bars when arranged and fitted in the ordinary manner were easily, and therefore frequently, forced upward and out of place when the stoker picked between said bars in order to remove clinker or ash, so as to free the grate for the passage of air and the removal of burned dust, and in consequence of said bars becoming so disarranged or forced from their original positions they immediately exposed a larger surface to the direct action of the fire, and so became more easily burned and necessarily shorter-lived than if theyat all times only exposed their upper faces or tops to the fire.

The object, therefore, of my present invention is to so construct the fire-bars and arrange the furnace-grate that the fire-bars become effectually locked in their normal positions, and consequently they cannot be disarranged or forced out of original positions by being picked or by means of the fire being roughly stoked.

To obtain the before-described obj eat, therefore, I construct the fire-bars and arrange the furnace-grate in the manner set forth in the accompanying drawings,which are to be taken as part of this specification and read therewith.

Figure 1 is a longitudinal sectional elevation of my improved fire-bars, showing the looking arrangement thereof. Fig. 2 is a plan of the furnace-grate fitted with my improved fire-bars, and Fig. 3 is a cross-sectional elevation of the same. Figs. 4, 5, and 6 are longitudinalsectionalelevations,respectively, of modifications of my improved fire-bars and locking arrangements. Figs. 7, 8, and 9 are sectional elevations of portions of the aft firebars, illustrating modified arrangements of securing or looking the ends of said fire-bars.

Figs. 10, 11, and 12 are longitudinalsectional elevations of modified forms or means of interlocking the fire-bars in the center of the furnace-grate; and Fig. 13 is an enlarged transverse-sectional elevation of the form of firebar I prefer to employ with my present improvements.

Similar letters of reference denote corresponding parts in all the views.

Referring to Figs. 1, 2, and 3, the fire-bars A and B are preferably laid in a horizontal position fore and aftof the furnace-grate. As shown, they are fitted or laid upon a specially-constructedframe F, composed of two sides g and three cross-pieces h,j, and k. Each of the fore set of bars A, Fig. 1, has its front end a beveled, so that it may rest or bear freely upon the beveled part is of the front cross-piece 7c of the frame F, and the opposite end of each said bar A is rabbeted as shown at a Fig. 1, the lower portion of said end being formed with a V-shapedrecess or groove 66 ,111 order that it may fit upon or against a corresponding V-shaped'projection j, secured to or made with the middle crosspiece j of frame F. The rabbeted part a of each bar A, Fig. 1, rests upon the rabbeted part b of the fore end of each aft bar B, and beneath said rabbeted part b is a projection b which rests or fits freely into a suitable channel or groove j formed in the middle crosspiece j of frame F. The back end 12 of each aft bar B is formed with a V-shaped indent or groove and the cross-piece 71, is of a similar shape in cross-section, as shown, Fig. 1, in order that the ends 19 may bear or rest firmly thereon.

In fitting up my improved furnace-grate, Figs. 1, 2, and 3, the aft bars B are first placed in position upon the frame F, their ends I) resting against or upon the cross-piece b and their rabbeted fore ends upon the middle cross-piece j. After being so placed the fore bars 'A are then arranged so that their rabbeted ends 0, rest upon the rabbeted ends I) of aft bars B and their beveled ends a upon the beveled part 713' of cross-piece it.

It will now be obvious that the aft set of fire-bars B cannot be removed unless the bars A are in the. first instance removed, as the latter effectually lock the former. Therefore in order to complete the full looking or securing in position of the whole of the fire'bars A and I I employ a cross bar or plate M, which I place over the upper part of front end a of the fire-bars A, and I fasten the same down to the frame F either by bolts, rivets, screws, or by any other ordinary and suitable method. Referring to Fig. 4, the front bar A is made with its end a grooved, and the cross-piece 7a is arranged with a V-shaped projection is, in order that the ends a may fit or rest thereon, and in this arrangement the centercross-piece j has a projection j formed at the aft side thereof, and the rabbeted part Z) of the barB rests upon the rabbeted part c of the bar A. In order to complete the locking of the bars A and B, the plate M is secured to the frame F over the ends 0 of the bars 13. As shown in this arrangement, it is necessary to remove the bars 13 before the bars A can be taken out from the furnace-grate.

IVith reference to Fig. 5, the projection is is attached to the cross-piece 7c of frame F by means of bolts 7c, and the end If of aft barB fits on the V-shaped cross-piece 7L. In this case it is necessary to remove the projection h before the bars can be unlocked or taken out from the furnace-grate.

Referring to Fig. 6, the cross-piece j is made fiat upon its top and the projection j is rounded, and the cross-piece h is also rounded, as shown.

IVith reference to Fig. 7, the cross-piece 71 is made with a V-shaped groove 7L, and the bar B is formed with a correspondiugly-shaped projection, which fits therein.

In Fig. 8 the cross-piece h is formed with a spigot 7b, and the end 11 of bar 13 is formed with a suitable corresponding hole or faucet to fit thereon; and in Fi 9 the end of bar B has a tongue Zr, and the cross-piece his grooved at 7t, in order toreceivc the same.

Figs. 10, 11, and 12 represent the interlocking of the fire-bars A and B where they meet in the center of t e furnacegrate, rcspeetively.

In Fig. 10 the bar A is made with a spigot a and the bar B with a faucet I), as shown.

In Fig. 11 the bar A is made with a projection a, and the cross-piece j is arranged in two pieces, which are riveted or bolted to gether so that a space is left between, and the end I) of bar B is lipped or formed with a V-groovc, in order to fit over the end of of bar A and under the projection j, formed on the cross-p1ece j.

In Fig. 12 the bar B has a V-groove b and also a rabbeted portion 1), the latter resting upon the rabbeted part (t of the bar A. In consequence of the locking of fire-bars in the manner hereinbefore described with reference to Figs. 1 to 12, it becomes impossible even under rough stoking or usage to disturb or disarrange the bars when removing the clinker orstirring the fire. Therefore a much lighter and thinner lire-bar in all cases may be employed in my improved furnace-grate than can safely and economically be so employed when using furnace-grates arranged in the ordinary manner, and for reasons hereinbefore stated considerable economy is effected in using fire-bars and furnace-grates constructed and arranged according to my present invention.

llaviug now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- 1. In grate-bars for furnaces and the like, the combination,with a series of interlocking fore and aft bars, one set of these bars having indents or sockets, of a frame for supporting and holding the outer ends of said bars and a cross-pieee for supporting the inner ends of the bars and having a projecting portion adapted to enter said indents or sockets, for the purpose set forth.

2. In grate-bars for furnaces and the like, the combination, with a series of interlocking fore and aft bars, one set of these bars having indents or sockets at their inner ends and both sets having sockets and projections at their outer ends, of a cross-piece for supporting said inner ends and having a projection adapted to enter said indents or sockets, and the frame for engaging said outer ends, one portion of which is provided with suitable locking devices, whereby when one series of bars are inserted the second series are adapted to lock the first series and be held in turn by the locking devices on the frame.

In grate-bars for furnaces and the like, the combination, with the cross-piece having the projection and groove, as described, and with the frame, one portion of which is provided with a projection and the other portion is provided with a socket or groove formed by the frame and a detachable locking-piece, of a series of interlocking fore and aft bars, one set having a projection adapted to enter the groove in the cross-piece and with an indent for the projection on the frame and the other set having an indent for the projection on the cross-bar, and a projection for the groove formed by the frame and locking-piece, for the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 16th day of September, 1800.

DAVID JOIIN MORGAN.

Witnesses:

CHARLES A. NORTH,

1S3 A cwpm't Rm, Cttrdilf. A. '1. MORGAN,

29 Queen St, Cardiff.

IOC

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