US1080160A - Gear-wheel. - Google Patents

Description

G. B. OWEN.

GEAR WHEEL.

APPLICATION FILED 13130.14, 1912.

1,080,1 60. Patented Dec. 2, 1913.

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GrEORGrEB. OWEN, OFWINSTEIL ONNECTICUT, ASSIGNOR T0 WM. L. `('JrIIzBEIBJI CLOCK- COMPANY,OF WINSTED, CONNECTICUT, CORPRATION OFCONNECTICUT.

GEAR-WHEEL- l Specicatin of Letters Patent.

Patented Dec; a, 1era.

Application filed December 145, 19-1`2. Seria1'No.\736,768.

To all whom it may concern: Be it known that I,-.GEORGEB. CWEN,

a citizen of the United States, residing atl lVinsted, Litchfield. county, State of Connecticut, have invented certain new and useful Improvements mGear-W heels, of which4 thefollowing is a full, clear, and exact :de-v scription.

The present .invention relates totoothedgearing and is especially designed to provide a gearing of this type which .will obvlate back lash and willtake up the space fbetween its `teeth and-those=of an intermeshing gear. Such a constructionisdesirable generally and of'general use, and is especially desirable andhas. proven etl'ective inl land resilient, connecting means being provided between adjacent sections. Such a structure is effective in taking up the space between teeth when intermeshed with those of `a coperating gear. These and other advantages will be apparent from the fol-- lowingdetailed specication taken in connection with the 'accompanying drawings forming part thereof vand illust-rating a preferable embodiment 'of' my invention as applied to the gear train of a clock mechanism.- z v In these drawings, .Figure 1 is a fragmentary view in front elevation of aclock frame showing a gear train operating the hands ofy a clock, said train 'embodying a gear constructed in accordance with the present invention. Fig. 2 is a detail on an enlarged scale and in front and edgey elevation, of my improved form of gear, detached. Fig. 3 is a view in front and edge elevation of one section of the gear, detached. Fig. 4 is a detail in front and edge elevation of the other and cooperating section, likewise detached. Fig. 5 is a detail of the gear spring. Fig. 6 is a fragmentary view on an enlarged scale of the teeth of the drawing. It will be obvious therefore, that sectional gear. Fig. 7 is asimilar view showingsuch gearA teeth intermeshing with those of another gear.v4

Referringto the drawings'by numerals, 1 I indicates the front plate :of a'clock trame, and 2 .and 3 the 'minute and hour hands, respectively,of the clock.

4, 5, 6, 7 and 8 designate cooperating `gear elements forming the gear train for the clock hands, t-he arrangement being purelyjcon ventional. The gear 4, in the prsent illustrat-ion, 1s connected with the minute hand, while the gear- 5 isv connected with thel hourhand. In the case of clocks and other regu-- lators, back lash on-f the part of the gearing noticeably interferes with the accurate lindication bythe regulator andmy'irn-proved 70 for-m of gear is of particular lutility when l. used -in such a connection. The gear t inthepresent instance, is constructed inV accord-- ance with=my invention-andcomprises com\ plemental circular toothed sections 9 and 10, 75 the section 10 being provided with an annular recess 11` and witli'a Vcentral hub pori' tion 1 2 reduced in diameter at its end as at 13. The coperating section 9 is provided with an annular recess 14 corresponding to the recess 11 of the coperating gear section, and with a central aperture 15 designed to it over the reduced end 13 'of t-he hub of the first section of the gear, so as to permit relative movement between the two gear sections. The section 9 is preferably mounted on the hub 13 of section 10, and therefore in 4axial alinement therewith, and with .its inner recessed face 14 resting against the hub portion 12 of said section. A coiled spring 16 is seated within the cooperating recesses 14 and 11 ot the two sections of the gear, the

ends of the spring being bent transversel and being inserted in apertures 17 in eac of the gear sections, this spring being tensioned to position the teeth of one gear section so as to overlap slightly the teeth of the adjacent and cooperating gear section, as indicated most clearly in Figs. 6 and 7 of the when 'a gear constructed as described, intermeshes with another gear of the usual type, its teeth will engage between adjacent teeth of a cooperating gear, and will be held thereagainst under the tension of the coil spring which acts to take up the space between the teeth when engaged, thereby preventing back lash, and insuring the smooth and steady revolution of the parts controlled by said gearing.

I have shown and described my improved form of gear as applied and connected with a clock mechanism, but it is, of course, obvious that its use is not confined to'this art alone, and also that the details of construction may be modified within the spirit ofthe invention and the scope of the appended claims.

What I claim is:

l. A gear comprising a plurality of lcomplemental toothed sections mounted in axial alinement and for relative movement and each having their adjacent faces provided with axially alined annular recesses forming' a housing, a spring seated in said housing interconnecting said sections and normally tending to exert a strain on said sections in opposite directions, said spring extending around the axis of said gear.

' 2. A gear comprising two complemental toothed sections mounted in axial alinement and for relative movement, one of said sections being provided with a hub, and each of said sections having their adiacentfaces `formed with annular recesses therein -providing a'housing, and a coiled spring seated within said housing and interconnecting said y sections and normally tending to exert a strain on said sections 1n opposlte directions,

said spring extending around the axis of said gear. i

3. As an article of manufacture, a'gear. for regulators comprising two" complemental toothed sections, one of said sections bein provided with a hub and the other of sai sections being rotatably mounted thereon, the adjacent faces of each of said sections being formed with axially 4alined annular recesses forming a housing, and a coiled spring seated within said housing interconnecting said sections and normally tending to exert a', strain on said sections in opposite directions, said spring extending around the axis oflsaid gear.

4. In an article of manufacture, a gear comprising two complemental toothed sections connected-together concentrically but capable of limited independent rotation, an annular recess in the face of one of said toothed sections, said recess facing the other toothed section and forming therewith a housing, a coiled spring arranged in 'said housing, the coil of said spring lying within the plane of said housing, and one end' of said spring being anchored to one of saidA sections andthe other end thereof being anchored to the other of said sections.

GEORGE E. owEN.

Witnesses HARVEY L. SLAUsoN,

FREDERICK E. BLENKER..

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