US301705A - Grate-bar and lock for the same - Google Patents

Description

{No Model.) V 2 Sheets$heet I.

W. FISCHER.

- GRATB BAR'AND LOOK FOR THE SAME.

No. 801,705. r v Patented July 8, 1884.

(No Madel.) 2 SheetS- -Sheet 2.

W. GQFISOHER;

GRATB BAR AND LOCK FOR THE SAME No. 301,705. Patented July 8, 1884K ILL 'IIIII III|| IIIII mu III|I| IIIII IIIII IIII IIIIII l-IIII u||| mm:

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ATENT WILLIAM G. rrsonnn,

OF CINCINNATI, OHIO.

GRATE-BAR AND LOCK FOR THE SAME.

.SPECIPICATION forming part of Letters Patent No. l,705, dated July 8, 1884.

Application filed October 18, 1883. (No model.)

To all 2077,0722, iii-may concern.-

Be it known that I, WM. G. FISCHER, of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Grate-Bars and Looks for the Same, of which the following is a specification.

The object of my invention is to provide a grate-bar for use in stoves, ranges, furnaces, and the like, which bar may be easily shaken or locked, and to so construct the barthat portions of it may be replaced when burned out without the necessity of putting in-an entire new bar.

The various features of my invention and the advantages of each will be fully apparent from the following; description and the drawings, in which-- Figure 1 represents the front of a furnace employing my gratebars. Fig. 2 is a vertical longitudinal section through the fire-chamber and ash-pit, showing the side of one of the bars in position. Fig. 3 is aplan view of a portion of three grate-bars, showing the position they occupywith relation to each other. Fig. 4 is a side View, and Fig. 5 an edge View, of one of bar.

the triangular disks,which in connection with the central bar, make up the completed grate- Fig. 6 isan enlarged view representing the locking and shaking device.

The grate-bar consists of a bar, A, preferably hexagonal in cross-section, on which bar are loosely slipped a number of triangular disks, B. The bar A is preferably made of wrought-steel, but may, if desired, be made of iron, andthe disks B maybe made of castiron. On one side of each disk Bis a circular projection, b, the periphery of which does not extend quite to theisides of'the triangular disk, sothatwhen the disks are placed on the bar A, the face of the projection b will come in contact with the face of the disk next to it, and spaces will thus be left between the various disks, as shown in Fig, 3, through which spaces air can circulate. These disks B, as before stated, are slipped loosely on the bar A, and thus when any disk becomes burned out of shape it may be readily replaced. The triangular shape of the disks always forms a straight even surface, whether one, two, or more bars be employed, and the apex of the triangle being down, abundant aircirculating walls of the stove or furnace, the ends of the bars A at their points of support being rounded to permit them to turn freely. The extreme front end, a, of each bar A is forged to an angular shape, preferably triangular, as shown in Figs. 1 and 2, the plane of the sidesof the triangle coinciding with the edges of the triangular disks B when the latter are on the bars A. Above this triangular end a of each bar is abracket, D, at the end of which is pivoted the upper end of apawl, d, the lower end of which is thus suspended above the end a of the bar, a slight space being left between this lower end and the upper face of the end a. The purpose of this space is to permit a slight rocking motion to be imparted tothe grate without unlocking it to such an extent as to allow it to turn entirely around, as when it is desired to slightly stir the coals.

For the purposes of shaking or turning the grates, I employ a crank, 0, having ahead, E, in which is formed an opening which fits onto the end a of the grate-bar. hen it is desired to shake the grate only to a slight extent, the crank is placed on the end a a short distance onlythat is, to such an extent that it will not interfere with the pawl dand the grate may then be shaken as much as will be permitted by the space between the end of the pawl and the upper face of the end a. If it is desired to shake .the bar to a greater extent than this, or to turn it entirely over, the crank is pushed farther onto the end a, and the head E will then lift the pawl d, as shown in Fig. 6, and this head being round, the crank may be turned entirely around, and thus the grate will be turned, and when the crank is removed from the bar the pawl (1 drops down, as indicated by dotted lines in Fig. 6, thus automatically locking the grate. In this manner any grate may be shaken to the desired extent, and when the grates arenot to be shaken they are always looked to prevent them from turning. Either edge of the triangular disks B may form the upper face of the grate and by thus employing the different portions of the disks as the upper surface of the grate, they are less liable to burn out, and will therefore last longer than grates in which only one surface is provided upon which the fire lies.

As before stated, the bar Ais preferably hexagonal in cross-section; but, if desired, it may be, of other angular shapes which will prevent the disks B from turning thereon.

The various features of my invention are preferably employed together; but one or more of said features may be employed without the remainder, and one or more of said features may, so far as applicable, be employed in connection with grate-bars other than those herein particularly specified.

Having thus described myinvention, wh atI claim as new, and desire to'secure by Letters Patent, is as follows 1. The revolving grate-bar A B, provided with an end, a, angular in cross-section, in combination with the pawl d, suspended from a bracket or support above the end a, the lower portion of said pawl preventing the grate-bar from turning, substantially'as and for the purposes specified.

2. The revolving grate-bar A B, provided with a triangular end, a, in combination with p a crank, 0, having a head, E, adapted to fit onto the end a, and a pawl, (Z, suspended from a bracket, D, above the end a, substantially as and for the purposes specified.

3. The revolving grate-bar A 13, provided with end a, angular in cross-section, in combination with a crank, 0, having a head, E, adapted to fit onto the end a, and a pawl, cl, suspended from a bracket above the end a, substantially as and for the purposes specified.

4. The combination of two or more revolving grate-bars and locking devices, substantially as herein described, whereby each bar is automatically locked independently of the others, and which will permit each bar to be shaken or revolved independently of the others, substantially as and for the purposes specified.

5. The revolving grate-bar A 13, provided with an end, a, angular in crosssection, in combination with the pawl d, suspended above the end a, the lower edge of the said pawl being a slight distance from the adjacent portion of the grate-bar, substantially as and for the purposes specified.

WVILLIAM G. FISCHER. \Vitnesses:

ED. R. HILL,

'WALTER CHAMBERTJN.

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