US1169774A - Reversing mechanism. - Google Patents

Description

s. H. COCHRAN & w. E. oww.

REV-ERSING MECHANISM. APPLICATION FILED MAR. 26. 1915.

Patented. Feb. 1, 1916.

si/IITII II. oocIiRN Ani) WILL-Iainy E. cLoWfoI CHICAGO, ILLINOIS.

REVERSING MECHANISM.

' ricatti.

Specification of Letters Patent.

Patented Feb. 1l, 1916.

To all whom it may concern Be it known that we, SMITH H. Uooiiimx and WILLIAM E. CLow, citizens of the United States, and residents of Chicago, in thecounty of Cook and State of Illinois, have invented certain new and useful Iniprovements in Reversing Mechanism, of which the following is a specification.

Our invention relates to a novel reversing mechanism particularly adapted for use in reversing .the movements of a washingfmal chine cylinder. I' As is well known, it is desirable to provide means for automatically reversing the direction of rotation of certain mechanical elements after a predetermined numberl of revolutions in either direction. This is particularly true in the operation .of certain types of washing machines. In such-devices the cylinder cr .drum is usually rotated in one direction for a short time, then autoin-atically reversed and rotated 'in the opposite direction.. A device which will accomplish this result without the possibility of becoming out of order or being subject to excessive wear is desirable. Suchl a de- Avice is disclosed herein. l

The essential features of this application are comprised inl a driven element provided with a spiral groove on one face there of, a drive shaft disposed across the face of said driven element and aclutch, the clutch being operated to engage alternately certain intermediate gears located on opposite sides. of the driven element, the clutch being shifted by coperation with stops 1o cated in the spiral groove and acting as the terminals of such groove.

The invention may be more readily underH` stood by reference to the drawings, whereinl.

Figure 1 is a side elevation of a reversing accompanying mechanism constructed in accordance with ings it will be seen that vwithin 'a boX or casl our invention, and Fig. 2 is a section on the line 2 2 Fig. l.

Referring more particularly to the drawing 10 is mounted a bevel gear 11- having in this instance an integral stub shaft 12- which may engage the drum or cylinder of awashing machine or any other device which is adapted to rotate alternately in opposite directions. The gear 11 is provided with gear teeth 13 at its marginal edge. W'ithin the body of the gear and regularly disposed onthe facethereof is a spiral groove 14.

j thereto,

Disposed in each turn of the groove and arranged in the present instance in. a radial line are threaded recesses l5, within which .screws 16, 17 may be placed. These screws 60 kact as stops and define the operative length or extent of the spiral. Coperating with this groove is a pin 18 carried by a block 19 slidably mounted on a levei 20, which lever is pivoted at 21 to the casing 10 and 65 has a complementary member 22 riveted the parts 2O and 22 forming a yoke which enters a circumferential recess formedvin a sleeve 23.' This sleeve is splined to a drive sliaft 24 and is provided With a 70 clutch 25, A2G on opposite ends thereof. The yoke member and the sleeve are adapted to be'held in either oftheir two positions by `means 'of a coil spring 27 connected to the member and to the casing 10 and placed '7 5 under comparison. The member 20 projects through the casing 10 as shown at 28 and acts as a handle by means of which the clutch may be manually operated. Beveled pinions 29-30 yare loosely mounted on the 80 drive shaft 2.4, these pinions engaging on diametricallyopposite sides with gear teeth laof the member 11. y It will be seen that when the sleeve has clutched the pinion 30, as shown in Fig. 1,

the large gear 11 will be rotated in one direction. However, when the clutch is thrown to engage the pinion 29 the gear 11' p will lbe rotated in the opposite direction al.

though the drive shaft 24 rotates in the same 9C direction in each case. The sleeve or clutch member is automatically actuated iii the following manner: After determining the number of revolutions of the driven member -which are desired the screws 16, 17 are 9,5

located in the respective grooves. In the setting shown in Fig. 1 the driven member would be given five'l revolutions when the pin 18 would strike one of the screws-and throw the clutch out of engagement with one pin- 10Q ion and into engagement with the other, whereupon the direction of rot'ation would be reversed and the pin would travel backward in the spiral groove for five complete revolutions when the opposite screw would be contacted and the machine versed.

It will be seen that this construction is so simple that parts could not easilyvbecome again reout 0forder and very little wear isl 'occa-=110 sioned. This is particularly true for the reason that the entire mechanism may be thereto.

'. member forsalternately \connec ting saidV inclosedwithin the casing l0, said casing filled with grease andA a cover, 31 applied Obviously the construction is ca pable of considerable modification Aand such .modifications as are within the scope of our power transmission means to ,a source of power, substantially as described.

2. In a reversing mechanism, the combination of a rotatable element provided with a spiral guide-way thereon, means for'adjusting the operative length of said guideway, -a shaft extending across the face of said `rotatable element and provided .with

gears on opposite sides of the aXi-s of rotation of said rotatable element, a clutch and means operative lin the spiral guide-way for shifting said clutch and connecting said` shaft to saidrotatableelemerit by' means of either of'said gears, substantially as de' scribed.

3. In a reversing mechanism, the'combination of a gearhaving a spiral groove in one face thereof, a shaft extending across i l the face of said gear, pinions loosely mounted on said shaft anden'gaging saidge'ar, a

clutch member splined to said shaft and movableto alternately engage said pinions, and means for shifting said clutch, Asaid shifting means-including a pin slidable in `said groove, substantially'as described.

4. In a reversing mechanism, the combination-.otI a driven member provided with a spiral groove,'`m`eans for adjusting the operative length-' of said groove, a` driving member, power transmission means between said driving andv `driven members, said power transmission means being located on diametrically opposite sides of said driven member, a clutch `for `alternately connecting one'of said power 'transmission means to said driven member, and means operative in sald groove for yactuating said clutch,v substantially as described;V

5 ..In a reversing-mechanism, the combinatlon'of. agear having asymmetrical splral groove on one facethereof, stops constitutingthe ends of said groove, a shaft disposed .across the face of said gear pinions loosely mountedon said shaft and engaging oppio;l

4site sides of' said gear, a clutch lmember splined to said 'shaft and adapted to alter# nately'engage said pinions, a lever for actuating said clutch, said lever being provided with a pin entering said-groove and by contact with said stops cause the shifting of v said clutch, substantiallyas described.

i SMITH H. COCHRAN. WILLIAM E. CLOVV.

Witnesses:

T. B. BUTLER, i C. Browns.1

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