Mattress making machinery

Claim 1

Apparatus for the manufacture of spring interior units from a coil of wire which comprises in combination more than one conventional hour-glass forming spring machine, means for feeding the springs so formed from each of said spring forming machines alternatively one from each side to opposite sides of a conveyor having individual pocket members for locating individual hour-glass springs, means for feeding the springs in the conveyor to a station whereat a predetermined plurality of the springs may be displaced from the conveyor simultaneously, means for simultaneously displacing the predetermined plurality of springs from the conveyor, means for positioning the plurality of springs in a first row relative to another plurality of springs in a second row between an upper and lower press member each having a lateral groove in their opposing flat faces and means for moving one of said press members toward the other to simultaneously compress said first and second rows of hour-glass springs with the end convolutions of springs in each row adjacent said lateral grooves in position to wind a convoluted spring around the end convolution of adjacent springs as said convoluted spring is passed from a convoluted die through said lateral groove with said hour-glass springs in compressed condition and means for repeating the operation until a plurality of rows have been joined together at their end convolutions.