US1476515A - Grinding wheel - Google Patents

Description

Dec. 4 1923. 1,476,515

B. F. HOWARD GRINDING WHEEL Files Ma 10. 1921 Biffan a I'd,

Patented Dec. 4; 1923.;

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ear-ent re Application filed n y-m,

To all whom-it may concern: c

Be it known that I, BERNARD F. HOWARD, a citizen of the United States, residing at- Morrisville, in the county of Lamoille and State of Vermont, have inventedccrtain new and useful Improvements in Grinding Wheels; and I do hereby declare the followinp, to be a full, clear, and exact description t the intention, such as will enable others skilled in the artto which it appertains to make and use the same.

This invention relates to grinding devices of the type embodyinga plurality of spaced connected rings utilizing an abrading-material such as emery. 5 r

The invention has for itsgobject to prevent waste oi the grinding material, insure a practically uniform wear of the grinding wheel and to obviate subsequent finishmg to remove emery trails or marks occasioned by the use of the ordinary emery wheels.

Other objects and advantages will be apparent and suggest themselves as the nature of the invention is understood.

ment of the invention it is to be understood that invadapting the same to meet dilterent conditions and requirements, various changes in th form proportion and minor details or" construction may be resorted to without departing from the nature of the invention.

Referring to the accompanying drawings v 1 points corresponding with the crossing be-- forming a part of the specification,

Figure 1 isa top plan view of a grinning wheel embodying the invention,

Figure 2 is a section thereof on the linev w-m of Figure 1, r p -v V Figure 3 is a perspective view of the driver, and v Figure 4 is an enlarged cross section of one of the grinding rings. 7'

- Corresponding and like parts are referred to in the following description and designated in'thc several views of the drawings by like reference characters. 7

The grinding wheel comprises a plurality of concentric rings 1 which areconnected by means of a plurality of radially disposed bars 2. The rings 1' and bars 2 preferably form parts of a single casting. Each of the rings 1 ilarestoward its top s1de,-form1ng overhanging portions 3 at opposite sides, indicated most clearly "in F igure 4. overhanging portions 3 prevent the emery or abrading material from creeping up- 'A driver isprovided 'n con While he drawings illustrate an embodi- 1921. Serial No. 468,268.

The

wardly along'the sides of the ringsand lodg ing on'the top thereof." The outer sides of the overhanging portions 3 curve laterally"- and turnthe. abrading material and cause the same to fallback upon the work, thereby I requiring less attention on the part of the operator to keep the wheel properly supplied with abrading material. There may be any number of tie bars 2 for the 'grindingrings 1 and, as shown, there are four bars 2 and the same are equally spaced; w

I 'unction with the grinding wheel and consists of a ring' 4 and an arched bar 5 diametrically disposed.

Spaced lugs 6 are formed on the upper side of the arched bar 5 for convenience of at- I (aching the wheel to. the grinding machine in a manner well understood Thering 4: is provided 'in'its' circumferential length with transverse openings 7 to receive bolts, or fastenings 8 by means of which the driver is attached to the grindingwheel. 'The tie bars 2 are formed on their upper sides with lugs 9 which are positioned to extend along a side of the ring 4, said lugs being apertured to receive the fasteningsifS. It is observed that the driver has a four point contact with the grinding; wheel; each of such tween the ring t and each of the tie bars 2;

The pressure is thus distributed and the grinding wheel caused to wear uniformly and with the further advantage that the work is free from'e'mery trails or marks and :does not require subsequent finishing for re moval of the same. The driver may be readlily detached and used repeatedly in connec-.

tegral wit-h'sa-id rings and disposed c0mo plet'ely above theirupper surfaces, avplural- 1 ity of lugs integral with the bars and spaced equi-distantly from and about t lienaxes Of i by multiple-point contact is efi' e ctedflwith' in presence of twowitn esses'.

said driver tO B-XGI't uniform pressure onthe V v 7 I wheel, and both side Walls" of each SlOt-GX- I 3 7' 3 K T 5 tnding upwardly andla'tera'lly toward each Vithses'f

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