US1079767A - Grate. - Google Patents

Description

vW. R. JEA VONS & A. R. WHITTAKER.

GRATE. APPLICATION FILED MAYl, 1912.

Patented Nov. 25, 1913.

FIE- J UNITED STATES PArENT OFFICE.

WILLIAM R. JEAVONS AND ARNOLD R. WI-I ITTAKER, F CLEVELAND, OHIO.

Specification of Letters Patent.

Patented Nov. 25, 1913.

To all whom it may concern Be it known that we, WILLrAM R. J EAvoNs and ARNOLD R. WHITTAKER, citizens of the United States, residing at county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Grates, of which the following is a full, clear, and exact description, reference being had to the accompanylng drawings.

This invention relates to grates for gas or vapor stoves and has for its object to provide a structure of this kind which is light and yet very strong, durable, and amply capable of withstanding alike both the ordinary and the extraordinary, incidents of use.

Grates of the kind referred to are usually cast and comprise one or more rings with radially extending ribs'connecting said rings and extending beyond the same, the parts being cast in one piece. Grates as thus constructed are brittle and extremely liable to break. By the construction of grate described and illustrated herein, it is possible, with the employment of less material than is used in the cast grates referred to, to provide a grate which is far stronger and is no more expensive of production than the relatively ineflicient grates heretofore in use. We secure this result by the construction set forth herein and illustrated in the drawings forming part hereof, wherein 1 Figure 1 represents a plan view of a grate constructed in accordance with our invention; Fig. 2 is a sectional view corresponding to the line 22 of Fig. 1; Fig. 3 an enlarged sectional detail showing the manner in which the rings and ribs may be assembled, the parts being separated; Fig. 4 a similar view showing the parts assembled and connected; Figs. 5 and 6 are views, respectively, of a slightly modified form 0 construction; and Fig. 7 is a'- detail in plan of the bottom of one of the rings and ribs, showing how the rings and ribs are connected.

In constructing a grate in accordance with our-invention, we provide one or more rings which are preferably of wrought iron or steel, the rings being conveniently made of wire or band iron or steel. These rings are conveniently and preferably made each of a single circular piece of wire or band iron or steel, as the case may be, the metal being bent to circular form with the ends in proximity to each other but disconnected. These rings, when more than one is employed, are

Cleveland, in the her and outer concentric rings,

tightly. It will be observed similar to Figs. 3 and 4 other figures,

concentric and are fitted into slots extending I upwardly from the bottom surfaces of the radial ribs and, when theparts are in position, the ribs and bands are secured together by forcing the metal of the ribs into engagement with the lower surfaces of the rings.

In the form of our invention shown in Figs. 1 to 4 inclusive, 1 and 2 denote the inrespectively,

said rings being shown as formed of wire,

the wire being bent to circular shape and the ends being brought into close proximity with a slot therebetween, as shown at 1*- and 2%. 3 denotes the radial ribs. These ribs are preferably of wrought iron or steel, such as rolled band iron or band steel and are of the usual shape. Each rib is provided with slots 4 and 5 projecting upwardly from the lower surface thereof a greater distance than the diameter of the rings 1 and 2 which they are adapted respectively to receive.

For the purpose of enabling the rings to resist the torsional and other strains to which they may be subjected, the slots lare of less width than the diameter of the rings and the rings are grooved or recessed, as

shown at 1 and 2 respectively, to provide a bearing surface for the sides of the slots 4 and 5 and to enable the ribs to grip the rings that the tops 4 and 5 of the slots 4 and 5 respectively are rounded in order to receive and form a fit with the rounded upper surfaces of the rings 1 and 2. When the ribs and rings are assembled, with the rings seated in the upper ends of the rib, slots, the ribs-project a substantial distance below the bottoms of the rings. In practice, the amount of this project-ion need not be more than one-sixteenth of an inch, this projection affording a sufficient quantity of metal below the rings to be punched or otherwise forced into locking engagement'with the rings, as shown more particularly at 6 in Figs. 4 and 7 In Figs. 5 -and 6 there is shown a cation of the. construction illustrated in the wherein the ribs '3 are provided with rectangular slots 7 and 8 adapted to receive rings 9 and 10 of band iron or steel which are rectangular in section. These rings will be assembled in the same manner as the rings 1 and 2, the bottoms of the'ribs being punched or otherwise forced into locking engagement with the surfaces of the rings, as shown at 119 the lower surfaces of modifiillustrated and de- -cast iron grates now in practically universal use. In connecting the rings and ribs, it is possible to lock these parts together by a single punching operation, providing a punch for each joint between a rib and a ring and operating all the punches simultaneously to force the metal of the ribs into looking engagement with the rings.

' Having thus described our invention, what we claim is:

1. As a new article of manufacture, a grate comprising a plurality of wrought metal rings, each of said rings being discontinuous and having its ends spaced apart to form a slot, and a plurality of wrought metal ribs separate from and interlocked with said rings, the'slots formed between the ends of the rings being out of radial alinement.

2. As a new article of manufacture, a grate comprising a plurality of wrought metal ribs each having an upper and a lower surface and a slot projecting into the body thereof from one of such surfaces, and a wrought metal ring inserted into said slots and interlocked thereby with said ribs.

3. A grate comprising a plurality of wrought metal rings and a plurality of radially extending Wrought metal ribs, said rings being circular in cross section between said ribs and said ribs being each provided with slots projecting from a surface thereof and having their ends rounded, the slots being of less width and greater depth than the diameter of said rings, and the rings being provided with opposed grooves forming bearings for the sides of said slots and the metal bounding the slots being forced inwardly into engagement with said rings.

4. A grate comprising a Wrought metal ring and a plurality of wrought metal ribs,

said ring being circular in cross section between said ribs and said ribs being provided each with a slot pro ecting upwardly from the lower surface thereof, the slots being of we have produced a grateless width and greater depth than the diameter of said ring and the ring being provided with opposed grooves forming bearings for the opposed sides of each slot and the metal at the lower surface of the ribs bounding the slots being forced inwardly into engagement with said ring.

5. A grate comprising a wrought metal wire ring and a plurality of wrought metal ribs each having a slot for the reception of said ring, the ring having opposed surfaces adapted to form each an elongated bearin with a side of a slot, the slots being 0 greater depth than the vertical thickness of the ring and the metal of each rib adjacent to the slot therein being forced inwardly into locking engagement with the bottom of the ring.

\ 6. As a new article of manufacture, a grate comprising a plurality of wrought metal ribs having upper and lower surfaces and each having a slot projecting into the body thereof from one of such surfaces, the walls of each slot being parallel, and a wrought metal ring fitted in said slots and having parallel walls cooperating with the parallel walls of the slots, the ribs and ring being locked together.

As a new article of manufacture, a grate comprising a plurality of wrought metal ribs each having an upper and a lower surface and a slot projecting into the body thereof from one of such surfaces, and a ring adapted to fit in said slots, the slots being of greater depth than the depth of said ring and the ring being provided with grooves forming a bearing with a side of each slot and the width of the ring between said ribs being greater than the width of the slots.

8. A grate comprising a wrought metal ring and a plurality of wrought metal ribs each having a slot for the reception of said ring, the ring having surfaces adapted to form an elongated bearing with a side of each slot, the slots being of" greater depth than the vertical thickness of the ring and the metal of each rib adjacent to the slot therein being forced inwardly into locking engagement with the bottom of the mug.

In testimony whereof, we hereunto affix our signatures in the presence of two witnesses. I

WILLIAM R. J EAVONS. ARNOLD R. WHITTAKER.

l/Vitnesses:

J. B. HULL,

BRENNAN B. WEST.

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