support extends downwardly through the upper jaw and presents a pleating surface so that upon reciprocation of lower jaw the jaw lugs successively engage the body to form pleats the pleats are retained by keeper structure including inwardly extending female jaw segments and weighted slide mounted on support application_number US 20504302 A description turning now to the drawings a pleating machine 20 is illustrated in fig1 and broadly includes a frame assembly 22 an elongated vertically extending tube support 24 jaw assembly 25 and drive assembly 26 the machine 20 is designed to efficiently pleat an elongated tubular body 28 of flexible material such as the above described nomex material in more detail the frame assembly 22 includes a base plate unit 30 including a lower base member 32 apertured as at 33 as well as an upper base plate 34 having an aperture 35 therethrough a series of coil spring vibration dampeners 36 are used to interconnect the member 32 and plate 34 each of the dampeners 36 including respective upper and lower attachment plates 38 40 secured to the plate 34 and member 32 via fasteners 42 as well as intermediate coil spring sections 44 a resilient valve stop 45 is secured to the upper face of plate 34 for purposes to be made clear the frame assembly 22 further includes a pair of laterally spaced apart upright threaded standards 46 48 which are secured to plate 34 by means of nuts 50 the standards are equipped with a set of lower collars 52 54 which support a horizontal generally t shaped stationary plate 56 as best seen in fig2 and 3 the plate 56 is provided with three spaced openings 58 60 62 between the collars 52 54 as well as a.