US615184A

US615184A - jobson

Info

Publication number: US615184A
Authority: US
Publication date: 1898-11-29
Anticipated expiration: 1915-11-29

Description

N0. 6l5,|84. Patented Nov. 29, I898;

a. JOBSON. CONVERTIBLE OUIOK OR SLOW COMBUSTION STOVE.

' led v1897-) (Applicahon fi Sept 8, (No Model.) 3 Sheats-Sheet l.

No. 6|5,l84. Patented Nov. 29, I898.

G. JO-BSON. CONVERTIBLE OUIOK 0B SLOW COMBUSTION STOVE.

(Application 810d Sept. 8, 1897.)

(No Model.)

3 Shuts-Shunt 2.

No. 6l5,|84. Patented Nov.'29, I898. G. JOBSON. CONVERTIBLE OUIGK OB SLOW COMBUSTION STOVE.

(Application filed Sapt. 8, 1897.)

3 Shasta-Sheet 3.

[No.Mudel.)

hm: Noam: mans cu, wamumo wunmamn. n. b.

- for described, partly open.

UNITED STATES PATENT OFFICE.

GEORGE JOBSON, OF HORNOASTLE, ENGLAND, ASSIGNOR OF ONE-HALF TO JAMES BARNS STONE, OF LONDON, ENGLAND.

CONVERTIBLE QUICK OR SLOW COMBUSTION STOVE.

SPECIFICATION forming part of Letters Patent No. 615,184, dated November 29, 1898.

Applic i n filed September 8, 1897. Serial No. 650,976. (No model.)

To aZZ whom it may concern:

Be it known that I, GEORGE JOBsON, a subj ect of the Queen of England,residing at Horncastle,in the county of Lincoln, England, have invented certain new and useful Improvements in or Relating to Convertible Quick or Slow Combustion Stoves, of which the following is a specification.

This invention comprises the application to an open domestic fire-grate of revolving doors which inclose the whole fireplace when drawn together and which when moved apart recede within or behind the front of the grate. By the employment of these doors a closed stove is obtained susceptible of regulation with reference to its rapidity of fuelcombustion. By reason also of the doors revolving to the side of the grate when not in use instead of folding flatly against the front, the length occupied in the latter case by the open doors between the pillars of the fireplace is more usefully applied to the widening of the fire-grate, and thus a greater effective heat-radiating width of the latter is presented to the room. In addition to this the smart appearance of the stove is still maintained even when the doors are not brought together, for they neatly disappear, as described above, instead of folding back on hinges in a manner which would expose their rear faces.

The top of the stove in my invention consists of a canopy which may be domed and of ornamental design, and I construct each of the inclosing doors in one with half of the canopy, and each door, with its half-canopy, is pivoted to turn about an axis of rotation which is central in the grate.

In the accompanying drawings, Figure 1 is a front elevation of a domestic fire-grate to which improvements according to this invention are applied, with the shutters, hereinaf- Fig. 2 is a similar view, except that the said doors or shutters are closed. Fig. 3 is a sectional plan on the line 3 3 of Fig. 4, and Fig. 4 is a transverse vertical section through the line at 4 of Fig. 2. Fig. 5 is a portion of a transverse vertical section similar to Fig. 4, showing curved base and sill which may be fitted.

Like letters indicate like parts throughout the drawings.

A is a domestic open fire-grate. Revolving doors B are applied thereto, so that the grate may be converted, when desired, into a closed stove. Valves B in the lower part of the doors and A in the upper or canopied part of the same are provided to enable the admission of air to the grate when the doors are brought together to be controlled.

The doors B are preferably semicircular in plan, but maybe flat or of any other suitable form. They are provided at the top and bottom-with radial arms 13, which are mounted on vertical pivots A or the like and which constrain the doors to rotate circularly around these pivots. In the form illustrated the half-canopy itself forms the top radial arm. By this construction rail-supports for the doors are rendered unnecessary, although, if preferred, that method of hanging the doors may still be followed, keeping, however, each door, with its half-canopy, in one piece.

When the stove is to be used as an ordinary open hearth, the revolving doors B, turning upon their Vertical pivots, retire through vertical slots A to the rear or side of the stove, where retreats A are provided for them, thus leaving the entire fore part of the stove unencumbered and freely open to the room.

To procure slower combustion of the fuel in the grate, the doors B B are slid from their retreats, so that they meet together in the center, as in Fig. 2. The supply of air and the draft are now further adj ustable by means of the valves B A, which are of the gridiron type.

Several inches of space intervene between the closed shutters B and the fire-bars A so that the admitted air may have free access to all parts of the fuel.

Preferably a valve A is placed in the canopied portion of each door.

It will be seen that, if desired, a curved fire-base with a sill, such as A Fig. 5, may be provided, which sill, while having a vertical fore face to make close contact with the revolving doors B, is so steeplyinclined at its rear face as to act as an internal feeder, throwing back to the grate any cinders, &c., which may fall to the front of the stove. The outer portion of the base can be flanged at A", if desired, to engage with the lower portion of each door and keep it close up against the ban I claim 1. 111 a grate the combination of a door and canopyboth moving together and pivoted by radial arms to a pivot central in the grate.

2. In a grate, the combination with a door and canopy both moving together and pivoted by radial arms to a pivot central in the grate, of a sill having an inclined rear face and flanged piece A to engage the lower portion of the door.

3. In a grate, the combination with a door and canopy moving together, and radial arms GEORGE .TOBSON.

\Vitnesses:

HARRY 13. Bnrnons, A. P. U001).