US362717A - Open fire stove - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

E. BROWN.

OPEN FIRE STOVEI Patented May 10, 1887.

Fmml] N. PETERS. Flwlo-Lilhogrnphcr. Washington. 9. c

(No Model.) 3 Sheets-Sheet 2.

E. BROWN.

OPEN FIRE STOVE.

No. 362,717. Patented May 10, 1887.

FBQO 83 TERS. Pbclo-Lnhognpner. Walunghm. n. C.

(No Model.) 3 Sheets-Sheet 3.

E. BROWN.

OPEN FIRE STOVE.

No. 362,717. Patented May 10, 1887.

fnverflm g a/ 72W UNITED STATES PATENT @EETQE.

EDXVARD BROIVN, OF PHILADELPHIA, PENNSYLVANIA,

CPEN FIRE STOVE.

EPECIPICATION forming part of Letters Patent No. 362,717, dated May 10, 1887.

(No model.)

To all whom it may concern:

Be it known that I, EDWARD BnowN, acitizen of the United States of America, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Open Fire Stoves, of which the following is a specification, reference being had therein to the ac conipanying drawings.

Figure l is a vertical section longitudinal through the stove. Fig. 2 is a front view of the same. Fig. 3 is a top view of the same, showing the position of the balance-lever in dotted lines. Fig. 4 is a view of under side of the top brace, P. Fig. 5shows the supporting-fork as fixed to the top of the stove. Fig. 6 shows the front of the sliding plate and door, with four other smaller drawings, showing some details of the said plate and door. Fig. 7 is a front view of the frame K. Fig. 8 is a side elevation of the stove, showing the doorhandle and dust-wings. Fig. 9 is a section through the front fire-bar. Fig. 10 shows the grate of the stove. Fig. 11 is a section horizontal through the stove, just above the grate 10 The door B is hinged to the vertically sliding plate 0 by pins on and sockets C, as described in one of my previous patents, dated March (3, 1883, No. 278,456, which permits the door to swing in or out, and also have a vertical motion, that the draft over the fire may be regulated while the fire is in view. The pins in and sockets G are shown plainly in Fig. 6. To prevent the door moving endwise in its bearings, I place upon the sliding plate C a projecting finger orknuckle, O", which on ters the notch C in the top edge of the door. This prevents a motion endwise, while giving full liberty for the doorto swing in or out. The door, being polished or plated, reflects the rays of the fire outward and downward upon the floor. To prevent theheat from the fire tarnishing the nickel-plating,Ibolt upon the face of the door a thin piece of plated copper, I), leaving an air-spacebetweenthem. Thechimney-draft causes a strong current of cold air to be drawn downward between the plates, and also to impinge upon the outside surface, which cools the reflector and makes its polish much more durable. The reflector is secured to the door by two notches, c, at each side, which are sprung beneath headed nails 6*. A screw, 0", in the center holds the plate in its place.

In ordinary open-grate fires the side cheeks, G, of fire-brick, slant toward the front bar,according to the dotted line V. This form, if used with my reflecting-door, would permit a large volume of air to pass to the chimney at each side of the door, instead of being forced through the ash-pit and the fire. I prevent this by raising the side checks, which terminate on a diagonal line, 9, corresponding to the usual angle of the door when in its highest position. The object of this reflecting-door is not only to reflect the rising fire-rays outward to the room, but at the same time to force a larger volume of air through the fire, instead of over the fire, as is usual with the ordinary open grate. The sliding plate 0, to which the reflecting-door is hinged, has at each end a cross-bar, h, (see Figs. 6 and 7,) the rear side of which slides upon the front frame, K. At the top and bottom of this cross-bar are cast the lugs h, which slide between the frame K and the plate K, which plate is bolted to the studs K cast upon the front frame, K. Upon this cross-bar is also cast 0. lug, h, to which the notched quadrant M is secured by a screw, 8. (See Fig. 8.) At the lower ends of these cross-bars h are shownthe sockets (l, in which thejournals m are pivoted.

O" is the lifting-handle for raising and lowcring the slide and door vertically.

G is the handle which operates the reflecting-door, turning it at any angle. By thus having the handle 0 and quadrant M secured upon the door B and slideO the door remains at any fixed inclination during the raising and lowering of the slide 0.

As a means of balancing the door and slide, I cast upon the slide 0 the ing a, (see Fig. 7,) and in the frame K, I make a recess, 0", into which the lug c fits, in order to gain an addi tional movement of the door. The door and slide (J are balanced by a weight, N, upon the lever a, the latter being connected to the lug c by a chain, 0 The general form of the open grate being an elongated rectangle, very little motion could be obtained for the slide if the lever were placed square across the stove or open grate. So I place it diagonally with the ICO 1 ering the joint.

- 6 having previously been removed.

weight at or near the rear corner of the rectangle, (see Fig. 3,) and thereby obtain sufficient vertical motion for my door. To secure it always at the proper angle within the stove, I cast a forked brace, I and rivet it to the inside of the sheet-iron top 1" of the stove. (See Figs.. 3, 4, and 5.) The under side of this brace is recessed at 19, into which recess is bolted the fork 19 which supports the lever a. By means of this rigid recessin the roof of the stove the balanced arm always maintains its proper fixed position. The projecting finger 1) acts as a guard to prevent the point of the lever n indenting the sheet-iron top.

Within the front fire-bar, T, (see Fig. 9,) I place the fire-brick t, and to prevent the firebrick being pushed away by dirt and cinder I cast upon the fire-bar a top lip, t cov- The under side of the firebrick rests upon the front of the grate-rest IV. This grate-rest frame is supported at the rear by legs to, the front resting on a lip, i cast upon the fire-bar T. By this I secure a recess for the front fire-brick of uniform size, which would not be so if the front of the grate-rest were on legs or had a support independent of the front bar, T. 1

Asmall lip, i, all around the top of the grate-rest frame prevents the fire-brick from slipping inward upon the fire.

Beneath the grate-rest frame are the hanging-lugs 10 carrying the grate w. (See Figs. 1 and 2.) This grate slides in and out loosely upon these lugs,and has a small play laterally.

I make holes w at the front corners of the grate suitable for the insertion of the short end of an ordinary poker, 10 Thus the grate may easily be shaken free from dust in a very simple manner. To clean the surface of the grate from slate and clinker, the poker is inserted through the opening E, the ash-pit door This operation, when the draft is poor, sometimes occasions dust to enter the room. It is caused chiefly by a side-draft across the hearth-plate 1". To obviate this when raking the grate, I incline the reflector outward, as shown by dotted lines 11 (see Fig. 8,) to catch the rising dust.

On each side of the front frame, K, is hinged a small wing, K which is a little higher than the ash-pit door c, When not in use, this wing lies close against the side of the stove. When raking the stove, it is turned forward. (See Fig. 8, where the near wing is seen close to the side of the stove and the far one is turned forward to prevent the dust made by raking from being blown out sidewise.)

R is the smoke-outlet; It, the sheet-iron back of the stove, inclosing a fire-brick lining, g G; r, the hearth-plate, grated at T through which grating the ashes fall into the ash-pit r". I

These improvements can all be applied to the open grate, which now is usually set as a fixture in the fire-place within backs and jambs.

I claim- 1. In open fire stoves and grates, the combination of a fire-pot, a draft-chamber over the fire, the door B, hinged to swing over the 'fire, and the reflecting-plate b, scoured upon the said door, with an air-space between them, through which a current of cold air is drawn by the chimney-draft, as described.

2. In open fire stoves and grates, the combination of a firepot, a draft-chamber over the fire, the balanced sliding plate 0, the door B, hinged to the said plate so as to swing over the fire, and the reflecting-plate 12, secured upon the said door, with an intervening air-space, through which a current of cold air is drawn by the chimney-draft, as described.

3. In open fire stoves, the combination of the balanced plate 0, sliding in guides upon the front frame, the door B, having pivots m, turningin the sockets O,and the guide-knuckle G", fitting into the recess 0 upon the door B, as herein described.

4. In open fire stoves, the combination of the sliding plate 0, the notched quadrant M, bolted to the said plate, the swinging door B, and handle 0 which engages in the said notched quadrant.

5. In open'fire stoves and fireplaces, th combination of the top 1", secured to the body of the fire-chamber, the brace P, bolted to the top, the protecting-finger p, the fork 19 the recess p and the balance-lever n, as herein shown.

7 6. In open fire stoves, the combination of the iron top 1", secured to the wall of the firechamber immediately over the fire, a rigid or fixed recess, 1), in the said iron top, the fork p and balancelever 9%, operating as herein described.

7. In open fire stoves or grates, the dustwings K hinged to the bottom of the front frame, K, and operating to prevent the escape of dust, as described.

EDWARD BROWN.

WVitnesses:

CLARENCE F. WILLIAMS, JOHN F. GRANT.

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