US1505881A - Washing machine - Google Patents

Description

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A. J. FISHER WASHING MACHINE Original Filed Oct. '7. i921 Patented ug. 19, 1924.

UNITEDV STATES PATENT OFFICE.

ALVA J'. FISHER, 0F EVANSTON, -IIl'llaINOIS, ASSIGNOR TO HUBLEY MACHINE COI- IPANY, F CHICAGO, IIIALHQ'OIS,i A CORPORATION OIEv ILLINOIS.

WASHING MACHINE.

Original application nled October 7, 1921, Serial No. 505,977. Divided and this application iiled October 6, 1923. Serial No.'666,966.

To all 'whom it may concern.'

Evanston, in the county of Cook and State o Illinois, haveginvented, certain new and useful Improvements in Washing Machines,

of which the following is a specication.

This invention relates to the rotating cylinder or container for tumbling or agil@ tating the laundry, and more particularly to the novel features of construction of the portions of the cylindrical wall of the cylinder around and forming the holes orapertures which permit circulation of the I air and water. The principal objects oi the invention are to form the metal surrounding these holes or apertures so that the cylinder performs more efiiciently in washing the laundry and to form the edges of the holes so that they are smooth and rounded being free from all cracks or crevices and sharp or lrough corners. To accomplish these objects, I have formed the holes in the apexes of frustro-conical depressions, the basesof which are ressed inwardly to form annularinterior ribs andthe apexes of whichy project -beyond the periphery of the cylinder, with the metal bounding each hole rolled back upon itself to form a smooth continuous rounded edge', so that there is no jagged, rough or sharp corners or edges. As the depressions project out beyond the periphery and are conical shape they act as little buckets or pockets which lift the water and convey it to and spill it over the clothes during the rotation of the c linder, thus more electively circulating t e water through the laundry which results in greatly increasing the eiciency of the machine. The metal around the holes is rolled back so that no sharp edges exist upon which the clothes would catch. The

exterior grooves, formed atthebases of the f conical depressions by the inwardly extending annular ribs, are preferably comparatively wide, the sides of the depressions radually sloping to form the cones, so that irt or grime lwill not be permitted to lodge in the grooves. Other vand incidental v objects of the invention will 4be apparent from the following description of the preferred form of'embodiment of my invention which is illustrated inthe accompanying drawings forming part oi'this speci- Be 1t known that I, ALvA J. FISHER, af citizen of the United States, residing at.

cation. j l Y In the drawings, 1 is an end view of a washing machine cylinder partly j shown in section to disclose the` lpresent invention more clearly to view; Fig. 2 is a detail longitudinal section through the rotating cylinder, as on the line 2-2 of Fig. 1, and Fig. 3 is an enlargedfragmentary sectional view showing the construction around the holes or apertures in the cylindrical wall. 'f

As more fully described and illustrated in my co-pending ap lication, Serial No. 505,977, tiled October 7,1921, of which `the present application is a division, the rotatin c llnder 5 comprises ends 'or heads 6, suita ly connected by metal' baies orl agitating bars 7, a plurality of curved sheet metal sections 8 forming the cylindrical wall, and a cover or door 9. The

ends or heads 6 are preferably formed of.

sheet-metal and carr the trunnions for supporting the cylin er in the tub which may be of any suitable construction or such as that shown in my above mentioned parent application.- Adjacent the periphery, each head is provided with an annular rib, forming a circular groove ,10 opening inwardly and also forming an overhanging flan e, asshown in Fig. 2.

` T e four sections 8, forming the cylindrical wall of the cylinder, are preferably alike) in .construction and'each 1s ormed from a blank of thin sheet-metal, being given the desired shape by means of suitable dies. The transverse edge portions of the sections 8- are curved outwardly and vthen towards each other to form curved screws 13 which project from the ends of the baffles through openings in the heads, and on which areiscrewed the nuts 14.

The main panel 15 ofthe door or cover 9 is preferably formed of the same kind v of sheet-metal as the sections 8 and is curved on the same radius to complete the cylindrical form of the cylinder. Riveted roo or otherwise secured to the transverse edges or apertures 17 which are preferably `ar-- ranged in parallel longitudinal and transverse rows. The metal around the holes is pressed or stamped outwardly to form frustro-conical depressions 19 with the holes in their apexes. The metal at the bases of the depressions is bent inwardly to form annular interior ribs 20. It will be observed that the'metal at the edge of each hole is rolled back` upon itself to form a smooth continuous krounded edge around the hole which is free from cracks or rough or sharp edges or corners so that. the laundry will not be caught or cut. It will also be seen that the conical depressions project outwardly vbeyond the periphery ofthe cylinder and this is' a. very important feature of my invention as the depressions are thus adapted to act as little buckets which convey the water more freely to the laundry and collect water as they pass through the water in the bottom of the tub, and then dump and spill it on the clothes during the continued rotation of the drum or cylinder. The depressions extend through the cylindrical plane or periphery of the cylinder, i. e. lie on both sides of such plane, and the walls or sides of the depression are curved or approximate a s herical form, to provide pockets or buc ets of greater capacity than would short conical de ressions with straight sides projectin on y to one side of the" periphery of the cy inder. The diameter of thea ertures 17 are alsov substantiall diameter of the inner en s of the depressions to give the depressions propercapacity. The portions of the depressions extendin outwardly from the periphery of the cy inder also aid in agitating the water in the tub and thus assist in making suds. It will also be noted that the exterior grooves, formed around the base of the conical vdepressions smaller t an thel 19 by the ribs 20, are quite wide, ywhich is also an important feature as the water is permitted to wash them and hence'dislodge Yand prevent the accumulation of dirt and grime'i'n the grooves. The annular ribs 20,

besides increasing the capacity of the 'de-4 pressions, alsoaid in strengthening the cylindrical wall and the double-thickness of metal around the holes in addition to its above mentioned advantages, aids in providfmetal wall having numerous outwardly extending conical depressions projecting beyond the peri hery ofthe wall and each provided with a ole in its apex of substantially smaller diameter than that of the base, of the cone to provide water pockets, the sides of the depressions being outwardly curved; the metal bounding each hole and integral wit-h the wall being rolled outwardly back upon itselfv to form a smooth, unbroken rounded edge around thehole.

2. In a cylinder for washing machines, a metal wall having numerous outwardly extending conical depressions projecting beyond the periphery of the cylinder and eachprovided with a hole in its apex, the metal bounding each hole and integral with the wall being rolled outwardly back upon itsel` to form a smooth unbroken rounded edge around the hole, and themetal adjacent-the baseof the depression bein pressed inwardly to form a vsmooth annular rib on the inside of the c linder.

3. In a cylinder for washing machines, a metal wall havin numerous outwardly extendin -conical epressions projecting beyond t e periphery of the cylinder and each provided with a hole in its apex, the metal adjacent the edge of each hole and integral with the wall being rolled outwardly back upon itself to form a smooth unbroken rounded edge around the hole, and the metal adjacent the baseof each depression being pressed inwardly to provide a smooth annular vrib on the inside of thepcylinder and a groove on the exterior of the wall, said groove beingof substantial width to prevent the accumulation of dirt.

ALVA J. FISHER.

.ing a rigid construction and prevents the

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