US1222155A - Gearing. - Google Patents

Description

C. B. STEELE.

GEARING.

APPLICATION FILED MAY 22. 1908.

Patented Apr. 10, 1917.

III-

I wi fimeooco the relative position of they gears,

CHARLES BREWSTER STEELE,

on NEW YORK, 1v. Y.

GEARING.

ll,222,il55.

Specification of Letters Patent.

Patented Apr. 116, 19117.

Application filed May 22. 1908. Serial No. 434,395.

To all whom it may concern:

Be it known that 1, CHARLES BREWSTER STEELE, citizen of New York, residing at New York, in the county of New York and State of New York, have'invented certain new and useful Improvements in Gearing, of which the following is a specification.

My invention is a new form of gearing, consisting of alternate projections and depressions, whose surfaces are spherical, formed upon and within, at any angle, either the rim, side, or any otherplace, of a disk, wheel, shaft, or any other rotating member or body, usually arranged symmetrically and concentric to the axis of rotation, with the bases of the projections tangent to the bases of the depressions, this construction producing a gearing that will convey and transmit motion without loss of energy, in contradistinction to the forms of gearing heretofore known, wherein any vibration of the shafting will cause gear crowding and gear binding all of which is hereinafter more fully described in the specification, designated in the claims, and illustrated in the drawings, in which like numerals represent like parts in the different figures, respectively.

Figure l, is a side elevation of two gears, of the spur type, partly in section, showing when a spherical-projection of one, coincides with a spherical depression of the other.

.relative cal ro ection 1s approachin Fig. 2, is a sectional elevation of a gear, taken on line,2-2 of Fig. 1.

Fig. 3, is an edge elevation of a gear, shown in-Fig. 1.

Fig.4, is a sectional elevation of a gear, (I); the beveled type, taken on line 4-4 of Fig-5, is a side elevation of a beveled type of gear, provided with alternate spherical projections and depressions.

ig. 6, is a sectional elevation of the beveled type, Fig. 5.

Fig. 7, is a sectional elevation taken on line 77 of Fig. 8, partly in section.

Fig. 8, is a side elevation of two gears, of the spur type, partly in section, showing the position of the gears when a spherithebottom of the rim of the gears of the rim on a curve of a gear, taken on line 6-6 of a sp erical depression, sloping from the center to the sldes.

ceive a shaft, upon which Fig. 9, is a sectional elevation taken on line 9-9 of Fig. 8.

The numeral, 1, represents the gear, of the spur type, whose edges and sides form a right angle, shown in Figs. 1, 2, and 3. The numeral, 2, represents the gear, also of the spur type, whose edges slope from the .central line, on a curve, 3, to the sides, as disclosed in Figs. 7, 8, and 9. The numeral, 4, represents the gear, of the beveled type, whose bevel slopes from the central line of the spherical projections and depressions, on a curve, 5, to the side and outer perimeter, as shown in'Figs. 4, 5, and 6. All these gears are formed on the surfaces that are designed to cooperate with a companion. gear, with symmetrically, projections, 6, and depressions, 7, whose surfaces are spherical, and whose. bases are tangent to each other, on a central line passing through the spheres coinciding with the outer surface of the gear. Through the center of each gear is a bore, 8-, adapted to rethe gear is to be secured. The gear may be in the form of a disk, as shown in Fig. 5, whether the gear be of the spur, bevel, or any other type.

In the types of gearing heretofore known, the teeth or projections, come into direct contact with each other, approximately throughout their length, causing considerable friction by reason of one tooth pressing against the other tooth with which it comes into contact, the form of the teeth necessitating a considerable space between the tooth of the driving gear that has entered between the teeth of the driven gear, and the tooth of the driven gear that follows. Whenever the velocity of the driving gear suddenly .decreases, or the direction ofrot'ation is reversed, the sudden checking of the velocity of the driving gear, causes the driven gear to overtake the driving gear, and its cogs to come, reversely, into contact with the cogs of the driving gear, with strong impact, such lost motion .producing an uneven running ofthe machinery, and chattering of the gears, as, for instance, with differential gearing, frequently causing the gears to become untrue, wear out, and break. Should there be the least shaft vibration the teeth, or cogs, are thrown out of parallel with each other, causing the gears to bind and the construction of relatively heavier shafting necessary, in addition to the difliculty and expense incidental to the F cutting of what is known as beveled gear, facts authoritatively established by competent engirigidity, that it is absolutely impossible to break them, and the depressions being within the body of the gear, there is no way by which the projections can fracture or injure them. Since both the projections and de-.

pressions of these gears are spherical, whatever their shaft vibration they cannot bind, and having no angles to wear off, they will convey motion from one gear to the other should their shafts be out of alinement. Friction is, also, reduced to a minimum, for these gears when engagingly rotating, simply roll their spherical projectionsand depressions, alternately, and mutually, into and out of one another, the bases of their projections always meeting and contacting with their depressions, the projections of a gear nevercontacting with the projections of its engaging gear, and as the pitch line of this gearing is always located at the meeting point of the bases of the projections and depressions, in contradistinction to forms and types of gears of other construction wherein the meeting point of their pitch lines is midway, or intermediate, the length of their teeth, or cogs, the projections of one of these gears, alternately, extend within the depressions of its engaging gear beyond the line of the bases of the gears, causing each gear to, alternately, change the speed of its rotation, each gear thus, alternately, assuming a more rapid rotation during the period that its depression is engaged, than during the period that its projection is engaged, these alternate changes of speed rotation consuming such an infinitesimal period of time, that there is no alteration in the rythmic rotation of the gearing, but an automatic adjustment that protects the gearingagainst rebound vibration waves from the machinery driven by the gearing, all of which advantages of construction and operative efficiency, even wearing qualities, endurance, economy of cost and maintenance, combines and provides a stable and practical gearing for all classes of machinery, uses, and purposes. What I claim to be my invention, is: 1. A gear consisting of a member provided with spherical projections and depressions capable of engagement with a facsimile member.

2. A gear consisting of a beveled base provided with spherical projections and depressions.

3. A beveled gear provided with spherical projections and depressions.

4. A gear consisting of a curvalinear base provided with spherical projections and depressions. I

5. A gear consisting of a base adapted for frictional contact provided with spherical projections and depressions.

6. A gear comprising a base adapted for frictional contact of beveled configuration provided with spherical projections and depressions.

7. A gear comprising a base of curvilienar configuration adapted for frictional contact provided with spherical projections.

and depressions.

8. A gear provlded with spherical projec tions and depressions, the surface of the gear forming the base of the projections and depressions being curved away from the median line passing through the base of the projections and depressions.

9. .A gearing consisting of two similar gears, each provided with alternate projections and depressions, whose bounding surfaces are spherical, the projections of one gear being adapted to enter the depressions of the other gear, and the depressions of the one gear being adapted to receive the projections of the other gear, in alternate succession, when the gears rotate.

10. A gear provided with alternate projections and depressions whose bounding surfaces are symmetrically curved in all directions toward their bases, said projections and depressions being ada ted to engage with the projections and epressions of a similar gear.

11. A gear provided with alternate projec tions and depressions, the surfaces of which projections and depressions would coincide with a curved line if said curved line were rotated on an axis that cut the curved line at two points.

12. A gear provided with alternate projections and depressions whose bounding surfaces are symmetrically curved in a plurality of directions.

13. A gear provided with alternately arranged spherical projections and depressions, the distance through the projections and the distance across the depressions each being less than the thickness of the gear.

In testimony whereof I hereby afiix my signature in presence of two witnesses.

CHARLES BREWSTER STEELE. Witnesses:

FLORA E. DAVIS,

WM. SHEDD HOLTON.

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