US1044054A - Escapement-wheel. - Google Patents

Description

P. E. JBANMAIRET. BSGAPBMBNT WHEEL.'

APPLICATION FILED JAN.24, 1912.

1,044,054, Patented'Nov. 12, 1912.

UNITED STATES. PATENT OFFICE.

-BAUL E. JEANMAIRET. or ELGIN, ILLiNoIs.

ESCAPEMENT-WHEEL.

To all whom 'it may concern; e 4

Be it k'nown that I, PAUL E. JEANMAIRET, a citizen of the -Uni'ted States, residing at Elgin, in thecounty of Kane and State of Illinois, have invented certain new and usethe lubricant holding pockets may be readily formed in the process of cutting the wheel.

The improvements also contemplate apeculiarlocation of the lubricant pockets in respect to the teeth of the wheel whereby the feeding of the lubricant t0 the pallet engaging portions ofthe' teeth by centrifugal action is facilitated.

For a full understanding -of the present invention, reference is to be had to they fol-4 lowing description and to thel accompanying drawings, wherein Eigure 1 is a side v1ew showing an escapement wheel embodying the invention in op-V erative relation to a common form of pallet. Fig. 2 is a view in side elevation of one of the teeth, a fragment of the wheel -body being shown and the partsbeing seen onan enlarged scale. Fig. 3 is an edgeview. of

the parts seen in Fig. 2. e

Throughout the following detail descrip-v tion and on the several figures ofthe draw'- ings, similar parts are referred to by like reference characters.

The escapement wheel illustrated in the drawings is of the ordinary typein so fark as its general formation is concernedv and is-denoted at 1. The various-teeth 2 of the wheel are adapted to coperate with the pal-r .l

let 3 in the customary way, t-he latter Vbeing provided with the stones 4.. In making. the

wheel 1, .itis contemplated to form the teeth l 2 slightly wider near th'eir `outer ends than usual in 'order toreadily provide pockets" or recesses 5in the curved edge portions of said teeth, arranged .transversely on the edges with respect to the diameter ofthe escapement wheel, that is, substantially parallel to Specification of Letters Patent. Application led January 24, 1912. Serial No. 673,09?.l

' the axis of the Wheel. yThe pockets 5 are of somewhat semi-circular form and are sutilciently deep that they will receive a drop of lubricating oil whenv the `latter is applied thereto, and the two edges of each recess are parallel to each other, as shown. The saidpockets or recesses 5'are arranged sub-l stantially .parallel to each other on the dif ferent teeth. The oil once received in va pocket '5' is fed to the head or outer extreme vportion o-f the teethto reduce toa minimum the friction between the stones 4 of the pallet and the wheel.

- As above noted, the lubricant pocketsk 5 Patented Nov. 12, 1912.

are 'arranged onthe curved side of the teeth l' and formed as close as; possible 'to the heads g of said teeth, this being advantageous in Order that the lubricant may freely flow-to the portions of the teeth where most needed. As a matter of'fact, a portion of the head of each tooth is cut out in forming the lubricant pocket 5. therein, as 'will be readily observed upon 'reference to the drawing, the pocket extending transversely the entire width ofthe face of the tooth in a direction parallel to the axis of the escapement wheel. The edge of the substantially semicircular channel or pocket which isfformed farthest. awayfrom theaxis `of .the Wheel is a slight distance inwardly from the outer "edge of the tooth inwhich the channel or pocket fis formed. f

In` the use ofthe invention, when the oil is applied to the ends of the teeth 2, it will drop into the pockets 5 and in the operationor motion of the escapement will feed to the stones 4: bycapillary action. j As the recesses, or pockets, 5 are disposed in substantial par'- allelism to the axis of the escapement wheel,

the centrifugal action' exercised by the rotation of the esca-pement wheel tends to throw. the oil contained in the pockets, or re cesses, toward the deepest portions thereof, these being the'portions ofthe recesses which are located farthest'away from the axis, of

the wheel and somewhat inwardly 'from the edges of the recesses whichare nearestto the outer edges of the teeth. This action results in antwefold advantage., lfirstly, ithas a tendency-tohold theoil'in the pocketsk for a greater length. of time, as the throw is in the direction of the," deepest portions of the pockets and not outwardly therefrom, as will be. obvious, but ythis tendency of the oil tocollectinfthe region of greatest depth of the pockets causes4 en exceedingly minute quantity of the oilv to be forced over the elly-es ot' the recesses which are farthest from the axis ot the escapement Wheel and nearest to the outer edges ot the teeth, Which results in the feed to the outer edges being exceedingly small. lThis fact. taken in connection` with the factthat the recesses are disposed on the sides ot the teeth.\vl1ich are curved, by which provision the Contact between the straight edges of the stones 4 and the said sides ot' the teeth is only very slight on account. of the curvature of the-latter, results in the second advantage that the feed of-oil is excessively -minute and a quantity once placed in the recesses Will last a great length of time.

Havingl thus described the invention,\vl1at is claimed as new is:v

l. .Xs an article of manufacture, an escapement wheel comprising' a body and arms extending' outwardly therefrom, one of saidv arms having a lubricant containing recess formed therethrough substantially parallel to the axis of the body, said recess being adjacent the outer end of the `arm iny position for delivering lubricant to the end of the arm.

2. As an-article of manufacture, an escapen ment Wheel comprising a body and arms extending outwardly therefrom, one of said ment Wheel comprising a body, and arms extending; outwardly therefrom, each havinga recess extending transversely through the material of the respective arm substantially parallel to the axis of the body, each of the recesses being adjacent the outer-"end of the respective arm in posit-ion for delivering' lubricant from the respective recess to said outer end. 3

In testimony whereof I aliix my signature in presencel of two Witnesses.

' PAUL E. JEANMAIRET; Wi tnesses MARGUERITE A. Sonor/rz, A. H. SPRowLs.

Copies of this patent ma.;7 be obtained. for ve cents each, by addressing the Commissioner of Patents,

, I `'tlashingtom D. G.

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