US699302A - Grinding-wheel. - Google Patents

Description

Patented May 6, |902.

G. H. FWLER &. W. D. HOWE.

GRINDING WHEEL (Application led May. 14, 1901.)

2 Sheets-Sheet l.

(No Model.)

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Patenten may |902.

G. H. FWLER & W. D. HOW-E.

GRINDING WHEEL.

(Application le d may 14, 1901.)

(llo Model.)

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GEORGE H. FOVLER AND XVILLIAM D. HOVE, OF CORTLAND, NElV YORK.

GRINDINGfvt/HEEL.

SPECIFICATION forming part of Letters Patent No. 699,302, dated May 6, 1902. Application iled May 14, 1901. Serial No. 60,179. (No model.)

T0 all whom it may concern.-

Be it known that we, GEORGE H. FoWLER and WILLIAM D. Howe, citizens of the United States, residing at Cortland, in the county ofl to property, due to the splitting and bursting of grinding-wheels. Safety collars or flanges have been used to reinforce inherently Weak" wheels; but such collars require wheels of special shape, thus adding to the expense, besides being inconvenient and troublesome on account of the fact that they must be constantly changed as the wheel becomes Worn. Accidents are also due to the Work being caught between the wheel and rest, heating and expansion of arbors, using too small or light collars, allowing the arbors to become loose in the boxes, and running the wheels on shaky machines. chine bursts, the line of fracture almost invariably extends from the center to the circumference of the wheel, and the so-called safety devices now in use do not strengthen the wheel, but merely prevent the fragments from flying asunder after the fracture occu rs, and if the machine is not stopped quickly the fracture will loosen and cause the parts to fly, which endangers life and property. By the means hereinafter described the wheel is strengthened in a manner to resist the bursting strain and there is no possibility of the wheel being fractured through the center, as the reinforcing-ring employed, together with the other elements described, forms a hub and bond for tying all portions of the wheel togethcr.

More specifically stated, the object in View is to combine with a grinding wheel or disk one or more reinforcing or binding rings,

ment of parts hereinafter fully described illustrated, and claimed.

Vhen a grinding-fna-` which are buried and concealedin the body of the wheel or disk and arranged in concentric relation to each other and to the center uand periphery of the wheel or disk, the said the body of the wheel or disk and assist the rings and ties in preserving the integrity of the Wheel or disk.

Vith the above and other objects in view, which will appear more fully as the description proceeds, the invention consists in the novel construction,combination,and arrange- In the accompanying drawings, Figure 1 is a side elevation, partly in section, of a grinding-wheel constructed in accordance with the present invention, showing the central reinforcing-ring without ties and spurs. Fig. 2 is a .diametrical section through the same.

Fig. 3 is a diametrical section showing the manner of arranging the ties. Fig. 4 is a similar section showing the manner of combining spurs withone of the rings. Fig. 5 is a transverse section of our improved grinding-wheel, taken on the line 5 5, Fig. 6. Fig. 6 is a longitudinal section thereof, taken on the line G 6, Fig. 5.

Similar numerals of reference designate corresponding parts in all figures of the drawings.

Referring to the drawings, l designates a grinding-Wheel, which may be composed of any desired material,such as emery,and which is shaped by a suitable mold into the form of a grinding-disk of any desired diameter and thickness.

In carrying out the present invention a ring 2 is embedded in the body of the grinding wheel or disk during the process of molding the wheel and is so arranged as to occupy by preference a position centrally between the IOO opposite side faces ot the Wheel, and said ring is further arranged in concentric relation to the center and periphery of the Wheel, being entirely concealed from view. By the arrangement shown and described it is also practicable to use all ofthe Wheel forgrinding purposes. Vhere the Wheel or disk is of considerable size or diameter, tWo or more of these rings are employed, as shown in Fig. 3, in which case all of the rings Will be arranged in concentric relation, and, further, said rings are preferably united by ties 3, formed for convenience of wire coiled or looped around the several rings 2 and extending, by preference, radially with relation to the center of the Wheel. In addition to connecting the rings by the ties 3 said ties may be extended inward Within the innermost ring 2, so as to reach to the central opening 4 of the wheel, which opening is provided for mounting the wheel or disk upon a suitable mandrel. A bushing 5 may be inserted in the opening 4L for receiving the mandrel. In addition to the concentric rings and the ties which unite them we also provide lateral spurs, as shown in Fig. 4 and indicated at 6. These spurs project, by preference, from opposite sides of the ring or rings and may be conveniently formed of small pieces of wire bent or looped centrally around their respective rings 2, with the terminal portions of the wire extending in opposite directions and transversely of the Wheel or disk.

The rings, ties, and spurs are all embedded and concealed within the body of the wheel or disk, as clearly illustrated in the drawings, and all of said elements contribute to provide a construction of grinding Wheel or disk by means of which the bursting of the wheel is prevented. Vhen the Wheel becomes suinciently worn to expose one of the rings 2, said ring may be severed by a hack-saw or other suitable implement and removed, after which the emery-Wheel may be used until the next ring is reached, and the latter ring may be removed in a similar manner, thereby enabling the entire Wheel or disk to be used. The construction described prevents the bursting of grinding Wheels ordinarily resulting from rapid rotation and centrifugal force, the rings and ties serving as .bonds for securely holding the body ot' the Wheel together. Should the Wheel be fractured from any cause, only small particles thereof can fly from the Wheel, the device of this invention preventing the usual diagonal fracture of the Wheel and the flying apart of large segments, which are a source of great danger to workmen in the vicinity of the grinding-Wheel.

Having thus fully described our invention, what We claim as new, and desire to secure by Letters Patent, is-

1. A grinding-Wheel comprising a reinforcing-ring embedded therein and laterally-projecting spurs connected with the ring.

2. A grinding'- Wheel comprising concentrically-arranged reinforcing-rin gs embedded therein and radial ties connecting the rings.

3. A grinding Wheel comprising concentrically-arranged reinforcing-rings embedded therein, laterally-projecting spurs connected With the rings, and radial ties connecting the rings.

In testimony whereof We affix our signatures in presence of tWo witnesses.

' GEORGE II. FOWLER.

VILLIAM D. HOWE.

Witnesses:

GEO. E. FRECH, B. F. FUNK.

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