US537221A - Vertically-adjustable grate - Google Patents

Description

(No Model.) 2 SheetsSheet 1. J. MONAMARA 85' G. COTTON.-

VERTIGALLY ADJUSTABLE GRATE.

Patented Apr; 9,18%;

INVENTORS 3 W mm m n A n n my wa m WIITNESSES: (flaw/07L (NoMofieL) 2 Sheets--Sheet 2. J. MONAMARA & C.'UOTTON.-

VERTIGALLY ADJUSTABLE GRATE.

PatentedApr. 9, 1895.

INVENTORS JZfin 1 73 namarcz. Cameron 0o 230w WZNESSES:

ATTO R N EYS.

0" WASHINGTON D c UNITED STATES PATENT OFFICE.

JOHN MONAMARA AND OAMERON COTTON, OF BATH, NEW YORK.

VER TlCALLY-ADJ USTABLE G RATE.

SZPEOIFICATION forming part of Letters Patent No. 537,221, dated April 9, 1895.

Application filed January 14, 1896.

T0 aZZ whom it may concern.-

Be it known that we, JOHN MCNAMARA and CAMERON COTTON, of Bath, in the county of Steuben, in the State of New York, have invented new and usefullmprovements in Vertically-Adjustable Grates, of which the following, taken in connection with the accompanying drawings, is -a full, clear, and exact description.

This invention relates to improvements in stoves and more particularly to the grates thereof.

Our object is to produce a grate which is adapted to be adjusted vertically, so that the bed of coals or fire pot may be raised or lowered as desired, for the purpose of regulating the amount of heat to suit the convenience of the operator. We have found by experience that it often happens that when the fire is nearly consumed and there remains only a small bed of coals just over the grate, it is desired to revive the fire suificient to do a small amount of cooking, and to do this it is necessary to practically build a new fire, but by arranging the grates adjustable vertically, the fire may be raised to a point just under the apertures so as to get the benefit of all of the heat that there is so as to avoid the necessity of re-kindling the fire; and to that end our invention consists in the several new and novel features and combination of parts hereinafter described, and which are specifically set forth in the claims hereunto annexed. It is constructed as follows, reference being bad to the accompanying drawings, in which- Figure 1 is a side view of the forward end of a stove with our improvements attached. Fig.' 2 is a view of a vertical section just inside of the outer casing of the stove. Fig. 3 is a transverse vertical section on line acw of Fig. 2. Fig. 4 shows a side view of the device for locking one of the arbors and thus holding the grates in any height desired. Fig. 5 is a front end view thereof. Figs. 6 and 7 are end views of the rotating shafts having cogs on their ends for the purpose of raising and lowering the grates.

-A is a stove of any ordinary construc tion, provided with a stationary fire box B in its front end in any ordinary way.

a are grates preferably of theDockash form, although we do not confine ourselves to Serial No. 584,754- (No model.)

this particular kind of grate, as it will be evi= Y dent that any form of grate may be used as desired.

-a'- is a movable frame in which the grate -a is mounted and just below the grate is mounted a shaft b having cogs b mounted eccentrically thereon at either end and preferably within the frame. Just below this shaft-b is a similar shaftc mounted in the lower part of the frame, within which the frame a, moves vertically, said shaft cbeing also provided with similar cogs -c-1 eccentrically mounted and adapted to engage with the aforesaid cogs b. One end of the shaft -c extends out through the fire box and casing to the exterior of the stove where it may berotated by a handle dor in any other manner desired; that part of the shaft extending from the cog to the outer face of the stove be= ing rectangular, so that the key 'C-, constructed substantially as shown in the drawings, having a recess in its lower end =d'-- may drop through said rectangular portion of the shaft c and hold it from further rotation.

It will be observed that when the shaft cis rotated the cogs normally being in position, as shown in Fig. 6, will engage with the cogs upon the shaft b and throw the shaft b upward as the cogs take the position shown in Fig; 7, and inasmuch as the shaft .cis fixed it will necessarily throw the shaft b upward, which is journaled in the vertically moving frame and thus throw the grate up near the top of the stove.

eare vertical slot-ways in which the extending ends of the grate are adapted to travel. The key'-C is mounted in a slotway e-- in the outer casing of the stove and adapted to drop down and engage with p the rectangular end of the shaft 'c, so that it may hold it from rotation at any'point desired and thus hold the grate to any height desired.

f-- is a shield located overthe cogs -b'-- and --c'--- for the purpose of keeping the c'linkers from falling on them.

Having described our invention, what we claim, and desire to secure by Letters Patent, is-

In a stove, the stationary fire box, a verti IOO cally adjustable frame placed inside of its plied to one end of one of the shafts subto lower edge, and carrying the grate bars; and stantially as shown.

the stove frame provided with suitable slots, In witness whereof we have hereunto set combined with a shaft that is journaled in the our hands on this 10th day of December, 1894. vertically adjustable grate, a second shaft JOHN MCNAMARA.

jonrnaled in the stationary fire box, and pro- CAMERON COTTON. videdwithan operating handle at oneend, In presence ofgears attached eccentrically to the shafts and JESSIE E. MURRAY,

meshing together, and a locking device apl HOWARD P. DENISON.

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