upper position until the pressure reaches a predetermined magnitude at which time the support piece is released and drops to its original position the thoracic support piece is tilted about a horizontal axis at its middle and includes a cock and drop feature at each of its opposite ends the table also includes an arm rest which is movable beyond one end of the table to provide a knee rest when desired the table also includes a continually adjustable face or heat piece application_number US 15987580 A description referring to fig1 3 the numeral 10 generally designates the chiropractic table of the present invention table 10 comprises a pedestal frame 12 an intermediate frame 14 and a table frame 16 mounted at one end of intermediate frame 14 is a foot base 18 mounted above table frame 16 are an upper body support frame 20 and a lower body support frame 22 upper body support frame 20 carries thereon a chest support piece 24 a pair of face or head support pieces 26 and a thoracic support piece 28 lower body support frame 22 carries a pelvic support piece 30 mounted at the foot of the table frame 16 is a tibial support piece 32 a cervical chair back 34 is mounted adjacent the edge of pelvic support piece.