US1646972A - Washing machine - Google Patents

Description

1927- H. w. 'MITCHELIL WASHING MACHINE Filed April,2, 1923 3 Sheets-Sheet lv Oct. 25, 1927.

H. w. MITCHELL WASHING MACHINE Filed April 2, 1923 3 Sheets-Sheet 2 MMVW . 1 646 972 5 H. w. MITCHELL WASHING momma Filed April Z. 1923 s Sheets-Sheet s Patented Oct. 25, 1927. UNITE D STATES PATENT GFFICE.

nanny wMrrcn'n-LL, or crnvnnann, onro, Assreivon TO e. r. MITCHELL a son, A rnnrnnnsnreor GEORGE E. Infrrczeznm, enonen n. MITCHELL, an]: HARRY W.

MITCHELL, or CLEVELAND, onro.

'wnsnrne MACHINE.

Application filed April 2, 1923. Serial No. 629,277.

This invention relates to a washing inathe washing drum 1 is horizontally disposed 55 chine for ashing clothes, fabrics and the and is rotatably supported between upright like, and designed particularly for houseportions 2 and 3 of the supporting frame and hold use, the washer disclosed herein being is eriven by suitable driving mechanism t 5 of the type in which the clothes arewashcd carried by the portion of the frame. The

in a rotating water tight drunrin which the driving mechanism is preferably of the au- 60 clothes and wash water are placed. tolnatic reversing type in which the drum is An object of the invention is to provide alternately driven a predetermined number improved means within the drum for forcof revolutions in each direction. The specific ing air through the water and through the driving mechanism which I prefer to use for clothes in the water during the rotation of driving the drum is disclosed in my applica t5 the drum. tioirSerial il'o. 629,278, filed April 2, 1923.

A further object is to provide perforated The drum 1 has a cylindrical sheet metal partition members within the drum forming body and sheet metal heads 6 and 7 secured chambers adjacent the periphery of the drum to the ends of the cylindrical body. Each in which air istrapped and carried beneath of the heads has a. peripheral outturned the surface of the liquid during the rotation flange 8 which fits within the cylindrical of the drum the partition members being boty The body 5 has peripheral grooves readily removable to permit the interior of adjacent its ends forming internal. heads 9 20 the drum to be cleaned. against which the heads 6 and Tengage- The A further object is to provide an effec edge portions of the sheet metal cylinder 5 tivcly sealed closure for the aperture in the are turned back over the peripheral flanges drum through which the clothes are inserted. 8 of the heads 6 and 'l to unite the heads to and removed. 7 j the cylindrical body.

A. further object is to provide improved The heads 6 and 7 are sheet metal stampreinforced heads for the drum and also to ings formed with a raised central portion 10 provide improved means for securing the from which the ribs 11 extend radially to adsupporting trunnions to the heads. acent the periphery of the heads. The rein- A further object is to provide a valve conforcing ribs 11 are relatively wide and deep 30 trolled drain outlet for the drum together adjacent the center of the head and taper with conveniently accessible means for oper toward the periphery thereof. Two crescent 5 ating the valve. shaped depressions 12 positioned between A further object is to locate the drain radial ribs 11 with their ends adjacent the outlet in a par of the drum where. the clothes periphery of the head serve to furtheure within the drum cannot choke the drain inforce the head and also to provide arcuate outlet. ledges upon the inner sides of the head for Other objects willv be apparent from the a purpose which willv he hereinafter setforth. following description and accoinpanyiug A third crescent shaped. depression 1?) is prod rawings. vidcd at the end of one of the radial ribs 11 40 Reference should belied to the acconipauyand serves the same purpose as the depresing drawings forming a part of this specitisions 12. cation in which Fig. 1 is a transverse verti- Cup-shaped trunnion carrying disks let cal section in the plane of the axis of the shown in detail in Figs? and 8 are attached drum; Fig. 2 is an end elevation of the centrally to the headsG and 7. The disks 14; drum; 3 is a top plan view of the drum; are provided 'with peripheral flanges 15 Fig. #l is a fragmentary vertical section on which have raised portions to lit over the ribs an enlarged scale taken on line l1 of Fig. 11 and intermediate flat portions adapted to 1 Fig. 5 is a fragmentary plan view of the fit against the flat portions of the head heextensible perforated partition; Fig. 6 is a tween the ribs. The flangelS of each dish 1s 59 fragmentary longitudinal section through suitably secured to the head. Each cupone ofthe peripheral air trappingchambers; shaped disk l l has a central aperture 16 Figs. 7 and 8 are a plan and sectional view through which the supporting trunnion exrespectively of the trunnion carrying disks. tends the trunnion 17 carried by the (iii-2k;

Referring to the accompanying drawings attach-ed to the head 7 being a supportrp g 26 which extends into the hollow stein trunnion and the trunnion carried by the disk attached to the head 6 being a driving trunnion. The supporting trunnion 17 has a head 19 secured within the cup portion of the disk 1 1 attached to the head 7 and a stem 20 which extends through the aperture 16 of the disk and projects into a bearing 21 mounted on the-supporting standard 3. The driving trunnion 18 has a head 22 secured within the cup portionof the disk attached to the head 6 and a hollow stem 23 extenuing through the central apertureof the disk. The hollow stem 28 has slots 2 1 extending inwardly from the end thereof to receive driving pins 25 on theend of a 'driveshaft '7 A series of segmental chambers 27 are provided 'achacent the periphery of the drum upon the inside thereof by means of transversely curved partition'n'ieinbers which ex tend fromone end of the drum to the other and fit beneath the arcuate ledges formed by the depressions 12 and 13 in the head. Each ofjthe partitions consists of a main perforated plate 28 and a perforated extension plate 29 telescopically connected to the plate 28. The plates 28 and 29 are provlded with central rows of perforations 30 and additional rows of perforations 32 adjacent the longitudinal edges'thereof. The plate 28 has its edge'portions'rolledover to forn: hollow be'ads33 which rest against the periphery of the drum. The extension plate 29 has similar edge heads at which are I adapted to fit slidably'within the edge beads 33 of the main plate 28. The extension plate 29 fits within the end portion of the main partition plate 28 and is slida-ble longi tudinallythereof. A; pair of spring latch bars 35 are attached atoneend' to the underside of the plate 29 and have round upwzirdly extending studs 36 which have rounded ends and extend through apertures in the extension plate 29. The main partitionplate '28 has apertures'which register with the apertures in the plate 29 through which the studs 36 project when the plates are fully extended permitting the studs 86 to project through the, apertures in both plates and lockthe plates in extended posi tion. The partition plates 28 and 29 are so formed that they fit against the 'arc'uate ledges 12 and 13 in the. heads of the drum 7 (ill with theiredge portions resting against thr periphery of theidrum, When the partition plates 28 and29are extended'so that tliey are locked by the studs36, the ends thereof will be beneath the ledges 1201 13 in the heads and the partition memberwill be held rigidly' in place. VlVhenever' it desired to;

remove these partition members as will be desirablefor "cleaning the interior of'the drum, they can be'reinoved by simply're-J leasing the studs 36 b pushing them. in- "wardly and sliding the extension-plate '29 into the plate 28 until the partition member is released from the ledges on the heads.

In the operation of the machine the chambers 2'? upon each revolution of the drum will move through the air space above the water in the drum and when in this position the water will drain out of the chamber and as the chambers 27" move through the liquid the air will be gradually displaced by water and forced through the openings 30 and 32 out into the body of liquid containing the clothes or fabrics being washed.

the entrance of water into the chambers 27f thechambers. are moving downwardly into'the liquid and to retard the discharge of water from the chambers as the chambers are moving upwardly out of the liquid so that practically all of the air within the chambers will be discharged after the chambers are wholly submerged in the liquid and practically all of the water will be discharged after the chambers have been lifted out of the liquid, thus roviding' a more continuous discharge of alr during the pas of the chambu'sthrough the liquid and in more continuous discharge of water during the passage of the chambers above the liquid. a

37 is rolled back upon itself toprovide a sub stantially cylindrical edge bead 38 surroundmg the opening.

cliannel a l) which'is adapted to fit over'the edge head 38 of. the opening. --r11e channel 40 has tapered walls providinga wedging engagement with thebead 88 and providing a space in theibottom of the channel above "the bead 38 inwhich a suitable packing 41 The closure member 89 is may be placed. 7 secured 1n place over the opening by means of suitablejclampingbars 4:2.

i A suitable drain fixture has a portion 43' forming: an outlet passage attached to the cylindrical-body 5 of the drum and communicating with the interior of the chamber 27 which is diametrically oppositetheopening far. The drain'fixture has a'valvegchamber la-just outside the end of the drum to which the drain passage 43cleads. The valve chamber 4-4- hastan outletc'onti olled by a valve slidably inounted inthe disk-14 behind the head 19 0f the supporting trunnion. The

The closure member 89 is IOTIDGCl with a marginal inwardly racing which has air-spring metal ste1nl46 whichy extends diametrically across the lTGZLdQZlDCl' is.

= of the head &8 and the narrow portion of which is adapted to receive the rod 46. To open the valve 45, the stem ltl is pulled upwardly until the shank 49 is clear of the bracket 50, whereupon the rod 46 will spring in\\'ardly into the narrow port-ion of the slot 51, locking the valve 4-5 in open position. A small. catch basin 52 is mounted on the standard 3 immediately beneath the end of the drum to which the drainfixture is attached and is provided with an outlet nipple 53 adapted to be connected to a suitable conduit for carrying away the liquid drained from the drum.

The drum operating mechanism preferably includes a device for stopping the rotation of the drum in such a manner that the drum will always so stopped with the opening 3? at the top and the drain fixture at the bottom directly over the catch basin 52. Such stop mechanism being shown in my copending application Serial No. 629,278, above referred to.

By reason of the fact that the drain fixture COHIHIUDlQHtGS with the interior of one of the air trapping chambers 27, the clothes or other fabric articles within the drum cannot interfere with the drainage of liquid from the drum since they cannot be drawn to the drain outlet.

Having described my invention, I claim 1. A washing machine comprising a water tight drum adapted to receive the cleansing name and the articles to be cleansed, means for rotatably supporting said drum, and a plurality of inwardly bowed perforated partition nieml'iers secured within the drum with the ends thereof engaging the ends of the drum and the longitudinal thereof engaging the periphery of the drum, said partition members comprising telescop cally connected plates and means for retaining said partition members in extended position, the end walls of said drum being provided with retaining ledges engaging the inner sides of said partition members.

2. A washing machine comprising a retat-ably supported water tight drum adapted to receive the cleansing liquid and the arti cles to be cleaned, partition members forming segn'iental chambers at the periphery of the drum, each of said partition members con'iprising a pair of telescopically connected perforated plates, a spring latch carried by one of said plates engageable-With a perforation in the other plate to hold said plates in extended position, the end walls of the drum being formed with ledges engageable with ends of the telescopic partition members to hold them in place.

3. A Washing machine comprising a retatably supported water tight drum adapted to receive the cleansing fluid and the articles to be cleansed, said drum having a cylindrical body and end walls formed of sheet metal, said end walls each having a plurality of arcuate depressions forn'iing internal arc-uate retaining ledges, the ledges at one end being aligned with corresponding ledges at the opposite end, and extensible arcnate partition members having their ends engaging said ledges, said partition members each comprising telescopically connected perforated plates.

4t. In a washing machine having a water tight cylindrical drum, a partition member comprising a perforated curved plate hav ing rolled over longitudinal edges, a second perforated curved plate having its end titting within an end of the first plate and its longitudinal edge portions fitting within the rolled over edge of the first plate, and a pair of resilient strips secured to the inner side of the second plate, said strips having locking studs extending upwardly through perforations in the plate to which they are attached and engageable in perforations in the other plate.

5. In a washing machine a drum having a cylindrical body and sheet metal heads, each head being stamped to form a raised central portion and reinforcing ribs radiating from said central portion, and trunnion carrying disks secured to said heads, said disks be ing formed with a raised hub portion and a peripheral flange conforming to the ribbed surface of the head.

6. In a washing machine a drum having a cylindrical body and sheet metal heads, eabh head being stamped to form a raised central portion with ribs extending radial therefrom, said ribs being relatively wit adjacent the central portion and tapering toward their outer ends which lie zuljacent' the periphery of the heads, a. trunnion carrying disk secured to each head, said disks each having a central cup-shaped recess, a

peripheral flange and an aperture at the center of the recess, said flange being formed to fit over the ribs and conform to the surface of the head outside the central raised portion thereof, and a trunnion carried by each disk, said trunnions each having i flange fitting within the cup shaped recess in the disk and secured to the disk and a stem projecting through the aperture in the disk.

In testimony whereof, I hereunto my signature.

HARRY W. MITCHELL.

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