US645921A

US645921A - Grate for furnaces.

Info

Publication number: US645921A
Application number: US73888299A
Authority: US
Inventors: Robert S Mayer
Original assignee: HARRIE D CRANE
Current assignee: HARRIE D CRANE
Priority date: 1899-12-01
Filing date: 1899-12-01
Publication date: 1900-03-20
Anticipated expiration: 1917-03-20

Description

UNITED STATES PATENT OFFICE..

ROBERT S. MAYER, OF CINCINNATI, OHIO, ASSIGNOROF TVO-THIRDS TO IIARRIE D. CRANE AND ANTON MAYER, OF SAME PLACE.

GRAT FOR FURNACES.

SPECIFICATION forming part of Letters Patent No. 645,921, dated March 20, 1900.

Application iiled December l, 1899. Serial No. 738,882. (No model.)

which the following 'is a specification, refer-- ence being had therein to the'accomp'anying drawings. Y Y v My invention relates to grates for furnaces;

and its object is to provide improved means for supplying air tothe furnace to aid 'combustion.

The construction'of the improved grate will` be fully described hereinafter inl connection with the accompanying drawings, which form a part of this specification, and its -novel features will be defined in the appended claims.

In the drawings, Figure 1 is a sectional side elevation of a furnace-grate embodyingthe invention. Fig. 2 is a plan view of the same. Fig. 3 is a transverse section, and Figs. 4 and 5 illustrate parts in detail. v

The reference-numeral 1 designates a rectangular box or casing constituting an airchamber and provided at one end with an opening 2 for the admission of air from any suitable blower or like source. This air-chamber 1 is located upon the bridge-wall 7 of the furnace. v

3 designates hollow grate-bars, the inner ends of which communicate with the air-chamber 1, while their forward ends rest upon a supporting-bracket 4, secured transversely within the front of the furnace. Between the outer ends of the grate-bars Sand their support 4 is interposed a slide 5, formed with openings S, corresponding to the openings in the ends of the grate-bars 3 and adapted to register therewith when the slide is moved to the proper position by means of `its handle 9.

The cross-sectional contour of the bars 3 is shown in Fig. 3. The upper surface of each ba-r is flat at its center 10 and beveled or inclined iu oppositefdirections at each side of the center, as shown at 11. The bars are also formed with perforations 12 for the passage of air.l

v Alternating with the hollow or tubular bars 3 I employ open grate-bars 6,'each comprising a central body portion 13, from which project on opposite sides parallel fingers 14, the upper'surfaces of which' are inclined.

The operation and-utility ofthe construction above described willbe readily understood. When the Iire is started, the slide 5 is moved to close the front endsrof the t`ubu lar bars, the open bars supplying sulicient air for starting the fire. Air is then supplied to the air-chamber 1 and passes through the perforations in the tubular bars to the fire.

Thus the vfire can be regulated and a substantially complete combustion of the fuel obtained.

1. In a furnace-grate, the combination with an air-chamber supported upon the bridgewall of the furnace, ofa series of hollow per--` forated grate-bars having their inner ends communicating with the air-chamber; open grate-bars alternating with the tubular bars; and a slide for closing the front ends of the hollow bars.

2. In a furnacegrate, the combination with W. F. NORTH, JAMES M. BRANDT.