referring to fig1 there is shown , in perspective , the hot oil and vibratory manicure apparatus 1 of the present invention . in the present embodiment , this comprises a shallow dish 3 of a rigid thermoplastic , such as for example , polystyrene , 7 9 / 16 inches in outer diameter , with a wall thickness of 3 / 23 inch . the cylindrical outer sidewall 3a , extends upward to an overall height of 1 5 / 16 inch , in normal relation above the base . a cover 2 , also formed of similar plastic material , has an overall diameter of 73 / 4 inches and a wall thickness of 3 / 32 inch . a skirt 2a , which depends 7 / 8 inch in normal relation to the top of cover 2 , is constructed to fit tightly in telescoping relation over the top edge of the sidewall 3a of dish 3 . the top face 2b of cover 2 , is roughly annular in form , having a large central opening 2c , which has a straight edge 47 / 8 inches across , which is centered approximately 21 / 2 inches from the rear edge of cover 2 . the opening 2c is 4 11 / 16 inches from back to front , measured from the center of the straight edge , the inner perimeter of 2c being slightly irregular to substantially match the grooves in the surface of handrest 4 , which is shown in fig3 removed from the combination . the handrest 4 , which in preferred form is moulded in a hollow shell - like shape from polystyrene , or like thermoplastic material , has an overall cross - sectional dimension in the horizontal plane of 37 / 8 inches , an overall height of 2 . 200 inches from the plane of its base to the zenith of its curvature , and a wall thickness of approximately 3 / 32 inch . the handrest 4 is shaped to accommodate either a right or a left hand , under treatment . the top is substantially smooth and rounded in convex fashion to accommodate the palm of either hand , whereas the rounded sidewalls are grooved or fluted except for the back , which is substantially smooth . the wide grooves 4a are directed toward the front , forming substantially equal and opposite angles with the principal axis of symmetry , each having an overall width between ridges of about 11 / 2 inches . three narrower grooves 4b , each about 1 inch wide , disposed between the wide grooves 4a , are designed to accommodate the outstretched fingers . the opening 2c is so designed that when the handrest 4 is in place , together with the dish 3 and cover 2 , there is clearance of about 1 inch between the centers of grooves 4a and 4b and the slightly irregular periphery of the opening 2c , to accommodate the thumb and fingers of a hand positioned for treatment . a strip of sponge material 5 about 11 / 2 inches wide and 11 / 4 inch thick , is interposed around the periphery of the dish 2 , which contains a therapeutic treating oil , consisting essentially , for example , of mineral oil , which is contained in dish 3 to a depth of , say , 1 / 4 inch . in the present illustrative embodiment , about 8 - 10 ounces of oil are used . this tends to be partially soaked up by the sponge strip 5 which tends to rest against the fingers and nails of the hand under treatment . fig4 and 5 are , respectively , a diametrical section of the interior , and the electrical circuit schematic of the combination shown in fig1 and 2 . the heater 7 comprises loops of material of high electrical resistivity , say of the order of 100 ohm centimeters at 20 degrees centigrade , such as nichrome wire , electrically and thermally insulated from each other by one or more strips of mica or similar material . the entire heater is enclosed in a sleeve 7a of electrically insulative and thermally conductive material , such as , for example , synthetic rubber . the heater 7 , as assembled , is approximately 1 / 2 inch wide , 3 / 32 inch thick and 12 inches long . this is connected between the conductors 19 and 20 leading to a conventional 60 herz , 110 volt alternating - current source , into which the male plug 21 is adapted to be connected . in the present embodiment , it is contemplated that the heater 7 will have a dissipating power of approximately 800 watts , sufficient to heat 8 - 10 ounces of mineral oil to a temperature of , say , 120 degrees fahrenheit . ( in an alternative configuration , a heater of approximately 1200 watts will be used in conjunction with a switching thermostat in order to reduce the time required to heat the oil supply , and yet prohibit overheating of the oil ). as a further alternative , a conventional thermostat 25 is connected in series with heater coil 7 to keep the heater below a preselected temperature . it will be understood that instead of a conventional ac source the circuit can alternatively be modified in a manner well - known in the art to include a different type of vibrator to enable it to be energized by a battery ; and that a transformer may be interposed into the circuit to either step - down or step - up the voltage from the source , or to transform the current from ac to dc , if necessary to the optimum operation of the device . connected in parallel with the heater resistance 7 is an electromagnetic vibrator of any of the types well - known in the art . in the present example , this is adapted to be operated across a conventional 110 volts , 60 herz , alternating - current source , to produce 60 vibrations per second . this is carried out by a conventional vibrator mechanism comprising a electromagnet 9 fastened by means of a pair of bolts 14 and 15 to the supporting base 13 , which is 1 inch in diameter , and substantially centered in an area raised 5 / 8 inch above the peripheral base portion of container 3 . the vibrator includes a leaf - spring 11 of a ferromagnetic material such as , say , spring steel , which is rigidly connected at one end by a bolt 12 to a projection on the underside of hollow handrest 4 . in operation , the leaf - spring 11 is alternately attracted and repulsed from the electromagnet as the current reverses phase at a rate of 60 times per second . the resulting vibration is transmitted through the leaf - spring to the handrest 4 . adjustment of the amplitude of vibrations is provided by the bolt or post 17 [ which rides freely in sleeve 17a ] which protrudes through the center of base 13 and rests against leaf spring 11 . adjustment of bolt 17 adjusts the gap between leaf spring 11 and electromagnet 9 to vary the intensity of vibrations imparted to handrest 4 . a flat plate 24 , of plastic , such as polystyrene , is rigidly secured by a bolt 22 to a second internal projection near the lower open end of hollow handrest 4 . it will be understood that in the alternative , plate 24 can be formed integrally with handrest 4 . the handrest 4 is attached to the shallow dish 3 by means of a screw or bolt 23 which is interposed through the plate 24 a few inches from its inner end , the bolt being secured at its upper end by a nut 27 which is tightened against a rubber grommet 26 . the purpose of the latter is to dampen transmission of vibrations between handrest 4 and shallow dish 3 . the four - way switch 6 is connected in series with power leads 19 , which in the present embodiment is coupled with the oppositely poled power lead 20 in a connecting cable leading to the conventional male plug 21 which is adapted to be connected to a 60 - herz 110 volt ac source . lead 20 is connected to junction 22 between the heater resistance 7 and the coil 9 , whose opposite terminals are respectively connected to position 6b and 6c of switch 6 . the four - way switch 6 has a first open circuit position 6a , which is closed to &# 34 ; off &# 34 ;. the second position , 6b connects power lead 19 to heater 7 . in this position of the switch 6 , the vibrator coil 9 remains open circuited . in the third position 6c , lead 19 is connected to vibrator coil 9 , while the heater 7 remains disconnected . in the fourth position 6d , lead 19 is connected in parallel to heater 7 and vibrator coil 9 . thus , the combination of the present invention serves as a device for simultaneously providing relaxing vibrations and warm oil treatment to the outstretched hand of the user . the ends of the fingers are in contact with the oil - soaked sponge to soften the nails and cuticles for a subsequent manicure or other treatment . each hand may be treated , using the same apparatus . it will be understood that the present invention is not limited to the particular structure described herein by way of example , but only by the scope of the appended claims .
method and apparatus are disclosed for massaging and otherwise treating the hands , more specifically the nails and cuticles . a uniquely contoured hollow handrest of shell - like configuration which comfortably supports either hand with the fingers in outstretched , separate positions , is centered in a shallow container of treating oil . the inner periphery of the container includes a semi - annular barrier of oil - soaked sponge against which the fingernails and cuticles rest , and means for heating the oil above room temperature . the handrest is constructed to include a vibrator adjacent to its inner surface . thus , the fingers and nails of a hand under treatment may be simultaneously soaked in hot oil and massaged with vibrations .