US970890A - Revolving grate. - Google Patents

Description

H. J. GORRIGAN. REVOLVING GBATE. APPLIOATIONPILBD MAY18, 1909.

Patented Sept. 20, 1910.

8 SHEETS-SHEET 2.

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' Dublin, in the county of Laurens and State flue partition wall, and the other to a ledge be swung in either direction upon its pivots.

UNlTED STATES PATENT OFFICE.

HENRY J. GORRIGAN, 0F DUBLIN, GEORGIA.

REVOLVING GRATE.

Specification of Letters Patent. Patented Sept. 20, 1910- Applieation filed May 18, 1909. Serial No. 496,709.

To all whom it may concern:

Be it known that I, HENRY J CORRIGAN, a citizen of the United States, residing at of Georgia, have invented new and useful Improvements in Revolving Grates, of which the following is a specification.

The present invention is an improvement in revolving grates, and its principal object, broadly stated, comprehends the production of an extremely simple and inexpensive structure of the eneral type specified, which is designed to %e arranged in a fireplace formed in the wall between two adjoining rooms in such a manner that it may first be used to heat one room and then swung into position to heat the other, or may be used to heat bot-h rooms simultaneously, accordin as one or both of its compartments are fille and fired. More especially, the invention resides in the specific construction of the grate and of the supporting frame therefor, and in the particular manner in which the frame itself is mounted and supported.

Briefly described, the invention comprises atwo-part or double grate, the members of which are removably attached to the ends of a revoluble skeleton frame pivotally mounted between a pair of bearing members, one of which is connected to the lower face of the formed upon the floor of the fireplace, the arrangement being such that the frame may To permit the retention of the frame in adjusted position, it is provided at diagonally opposite ends with means whereby it may be fastened to the adjacent face of the flue wall.

The preferred embodiment of the invention is illustrated in the accompanying drawings, wherein- Figure 1 is aside elevation of the improved grate in position in a fireplace, the latter being shown partly in section. Fig. 2 is a Vertical section taken on the line 22 of Fig. 1. Fig. 3 is a horizontal section taken on the line 3-3 of Fig. 1. Fig. 4 is a fragmental perspective view of the grate proper and its supporting frame. Figs. 5 and 6 are perspective views of the two bearing members between which the frame is mounted. Fig. 7 is a fragmental bottom plan view of the frame. Fig. 8 is a fragmental top plan view of the lower supporting member.

Reference being had to said drawings, and to the reference characters marked thereon, A designates in a general manner the double fireplace formed in the partition wall B between two adjoining rooms G the chimney, D the vertical partition wa 1 formed in the flue of the chimney, E the grate proper, and F the supporting frame to which the latter is attached.

The partition D, which divides the chimney flue into two vertical compartments of equal size, has its lower end 5 thickened or enlarged and oppositely beveled, as shown in Fig. 2, thereby formin two deflectors which direct the products of combustion into the two sections of the flue. Upon the bottom face of this enlargement, there is fitted a correspondingly beveled. metal plate 6, whose ends are seated in openings formed in theside walls of the fireplace. This plate is formed with a central cross piece having an opening 8 which registers with an upwardly extending opening formed in the adjacent face of the enlargement.

Directly below the enlargement, there is formed upon the floor or hearth of the fireplace a low ledge 9 which extends completely thereacross, and is desi nod to support upon its upper face a at plate 10 secured to the s1 e walls of the fireplace in the same manner as the late 6. Plate 10 is provided centrally w1th a dependin shoulder 11 which extends into a centra opening formed in the above-mentioned ledge and is formed with a cup-shaped bearing openin 12 in which a pivot point 13 is formed, the bottom of the bearing being provided with perforations 14. Shoulderll terminates short of the bottom of the opening in the ledge, thereby providing a space or chamber 15 into which the perforations 14 open, as shown in Fig. 2.

The supporting frame F is interposed between plates 6 and 10, and comprises open rectangular sides 16 and solid end members 17, the first-mentioned members being connected-together by a solid central section 18 which is formed integral with the vertical cross-pieces 19 which connect the upper and lower rails of said sides. The frame, considered as an entirety, is therefore of a skeleton nature and includes two pockets or channels 20 arranged to receive solid filling blocks 21 of fire brick. The two side members of the frame are tapered gradually inward from top to bottom so as to conform to the lower beveling of the double deflector and thus impart a symmetrical appearance to the frame, and also to retain the correspondingly tapered filling blocks in place.

The solid central section 18 of the frame is formed at opposite ends with pivots or trunnions 22 and 23, the former of which projects upwardly through the opening 8 into the opening in the deflector 5, while the latter pivot rests upon the point 13. This construction, as will be apparent, admits of the frame being swung in either direction.

The grate proper, E, which is carried by the frame consists of two counterpart sections 24 of suitable shape arranged upon opposite sides of the frame and connected at their ends to the solid end members 17. To effect such connection, the side edges of each of said said members are cut away to provide vertical seats 25 which are intersected adjacent each end thereof by a short horizontal seat 26. The first mentioned seats are designed to receive the imperforate ends of the grate sections, which latter are held in place at such points by means of a pair of horizontal straps 27. These straps have their central portions fitted in the seats 26 and their ends in horizontal seats 28 formed in the grate sections in registration with the latter seats, the straps being securely fastened in place by means of bolts 29 which extend through openings formed in the inner walls of seats 28. The projecting inner ends of the bolts have nuts 30 fitted thereupon, (see Fig. 3).

When the grate'occupies its normal position shown in the figure last mentioned, it will be seen that one section thereof is disposed in one half of the fireplace and the other section in the other half thereof, so that fires can be built in either or both sec tions, as may be deemed expedient. In the former instance, one of the two adjoining rooms may be heated, and the frame then swung upon its pivots into position to dispose the fired section in the other half of the fireplace, so as to heat the other room.

The bottom of the supporting frame rests, as originally stated, upon the flat lower plate 10. This plate has its longitudinal edges 31 beveled from end to end by reason of which construction, it will be apparent that.any ashes or clinkers which project between the bottom bars of the grate sections will be sheared off during the swinging movements of the grate. The perforations 14: formed in the bottom of the cup-bearing are formed for the purpose of directing any fine ashes which may fall thereinto into the space or chamber 15, from which they may be readily removed by a poker or other suitable implement. V To retain'the grate in its normal position,

section of the grate being drawn across the top of the frame into the other room is obviated, since the outward flare of the deflector face will have the effect of directing the products of combustion into the adjacent flue section.

The operation and advantages of the invention are believed to be apparent from the foregoing, and further description thereof is accordingly omitted. In this connection,

it may be stated that the invention is particularly applicable for use in the double fireplaces frequently found in old-fashioned houses, these fireplaces being formed in the partition wall between two adjacent rooms. In such case, the revolving grate would take the place of either the stationary double grate or of the two separate grates, according to the type of fireplace, it being understood that in the latter case, a portion of the flue wall is knocked out to permit the revolving grate to be positioned.

What is claimed is:

. 1. The combination, with a'fireplace; of a revoluble grate located thereinand comprising a frame composed of connected side and end members, the latter members being formed at their sides with vertical seats,-a pair of grate sections disposed upon opposite sides of the frame and having their ends fitted in said seats, and connecting devices extending across said end members and secured at their ends to said sections, for attaching the latter to said frame.

2. The combination, with a fireplace and a pair of spaced bearing members located therein and arranged one above the other; of a grate revolublymounted between said members, the lower member having beveled longitudinal edges located in close proximity to the bottom of the grate, to shear off the clinkers protruding therethrough when said grate is revolved.

3. A support for revolving grates comprising a member formed with an ash-receiving chamber, and a member resting upon the first named member and formed with a thrust-bearing cup projecting downwardly into said chamber, said cup havingits bottom wall perforated.

4. A support for revolving grates comprising a member formed with an ash-receiving chamber, and a member resting upon In testimony whereof I have hereunto set the first-named member and formed with a my hand in presence of two subscribing witthrust-bearing cup projecting downwardly nesses.

into said chamber, the bottom wall of said HENRY J. CORRIGAN. 5 cup being provided with an upstanding Witnesses:

bearing point and with a series of perfora- CHAS. S. HYER,

tions surrounding the base thereof. JAMES L. NORRIS, Jr.

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