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An exercise apparatus comprising a generally rectangular extruded aluminum alloy frame having a head end and a foot end and including a pair of spaced apart parallel track members wherein the head end, the foot end, and the track or rail members are each formed from the metal extrusion material. The

An exercise apparatus comprising a generally rectangular extruded aluminum alloy frame having a head end and a foot end and including a pair of spaced apart parallel track members wherein the head end, the foot end, and the track or rail members are each formed from the metal extrusion material. The apparatus includes a movable carriage made of a rigid frame that moves along the rail members between the head and foot ends against one or more resistance members connected to the carriage and the foot end of the frame. Each of the rail members includes a longitudinal slot therein for receiving a foot support bar assembly. The rail members and head and foot end members are generally each metal tubular box extrusions and the rail members telescopically retract. Roller wheels attached to the carriage move along the top of the rail members and guide wheels move along the inside of the rail members. The invention further includes shoulder stops on the carriage that can be adjusted to a horizontal position so that the apparatus may be compactly stored.

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1. A reformer exercise apparatus comprising:a generally rectangular frame having a head end, a foot end and a pair of spaced apart parallel track members therebetween; a movable carriage mounted on the rectangular frame for movement along the track members between the head and foot ends, the carriag

1. A reformer exercise apparatus comprising:a generally rectangular frame having a head end, a foot end and a pair of spaced apart parallel track members therebetween; a movable carriage mounted on the rectangular frame for movement along the track members between the head and foot ends, the carriage having a carriage frame made of sheet material folded to form two parallel spaced channels that fit on the track members and a plurality of transverse ribs extending between the channels, wherein the carriage frame has a plurality of horizontal platform portions perpendicular to and spaced between the ribs, each platform portion extending between the channels; and a plurality of elongated elastic members extending between the carriage and the foot end of the rectangular frame. 2. A reformer exercise apparatus comprising:a generally rectangular frame having a head end, a foot end and a pair of spaced apart parallel track members therebetween; a movable carriage mounted on the rectangular frame for movement along the track members between the head and foot ends, the carriage having a carriage frame made of sheet material folded to form two parallel spaced channels that fit on the track members and a plurality of transverse ribs extending between the channels, wherein the carriage frame has one of the platform portions supporting a headrest; and a plurality of elongated elastic members extending between the carriage and the foot end of the rectangular frame. 3. A reformer exercise apparatus comprising:a generally rectangular frame having a head end, a foot end and a pair of spaced apart parallel track members therebetween; a movable carriage mounted on the rectangular frame for movement along the track members between the head and foot ends, the carriage having a carriage frame made of sheet material folded to form two parallel spaced channels that fit on the track members and a plurality of transverse ribs extending between the channels, wherein the carriage frame has one of the ribs supporting a pair of shoulder stops; and a plurality of elongated elastic members extending between the carriage and the foot end of the rectangular frame. 4. A reformer exercise apparatus comprising:a generally rectangular frame having a head end, a foot end and a pair of spaced apart parallel track members therebetween; a movable carriage mounted on the rectangular frame for movement along the track members between the head and foot ends; the carriage having a carriage frame made of sheet material folded to form two parallel spaced channels that fit on the track members and a plurality of transverse ribs extending between the channels; and a plurality of elongated elastic members extending between the carriage and the foot end of the rectangular frame, wherein the elongated elastic members are a plurality of springs with one end of each of the springs attaching to a first rib of the carriage frame, and a second end of each of the springs removably attaching to a spring support cross member extending between the track members at the foot end of the rectangular frame, and wherein a second rib provides a support for each of the springs when the second end is dismantled from the spring support cross member. 5. A reformer exercise apparatus comprising:a generally rectangular frame having a head end, a foot end and a pair of spaced apart parallel track members therebetween; a movable carriage mounted on the rectangular frame for movement along the track members between the head and foot ends; the carriage having a carriage frame made of sheet material folded to form two parallel spaced channels that fit on the track members and a plurality of transverse ribs extending between the channal; a plurality of elongated elastic members extending between the carriage and the foot end of the rectangular frame; and a pair of weight bearing roller wheels mounted in each of the channels of the carriage frame for rolling along upper surfaces of the track members, the carriage frame supporting a guide wheel adjacent each roller wheel, each guide wheel positioned to roll against a side wall of one of the track members. 6. An exercise apparatus comprising:a generally rectangular frame having a head end, a foot end and a pair of spaced apart parallel track members therebetween; a movable carriage mounted on the rectangular frame for movement along the track members between the head and foot ends; a pair of foldable shoulder stops, each fastened to a pair of support brackets mounted on the carriage; and a plurality of elongated elastic members extending between the carriage and the foot end to bias the carriage toward the foot end of the rectangular frame. 7. The shoulder stops of claim 6 wherein each pair of brackets are fastened to a vertical portion of the carriage.8. An exercise apparatus comprising:a generally rectangular frame having a head end, a foot end and a pair of spaced apart telescopically collapsible parallel track members therebetween; a movable carriage mounted on the track members for movement along the track members between the head and foot ends, wherein the carriage is captured on the track members when the track members are fully collapsed; and a plurality of elongated elastic members extending between the carriage and the foot end biasing the carriage toward the foot end of the rectangular frame. 9. The exercise apparatus of claim 8 further comprising:a cross member fastened to the foot end of the rectangular frame; and a pair of guide wheels mounted on the carriage, each positioned to roll against a side of one of the track members, wherein the carriage frame is captured by the cross member when the track members are fully collapsed to hold the carriage on the track members. 10. The exercise apparatus according to claim 9, wherein the cross member supports one end of each of the elastic members.11. The exercise apparatus of claim 9, wherein each of the track members has an elongated head end rail member telescopically received in a tubular foot end member and a carriage stop cross member fastened between the foot end members maintaining the foot end members in a parallel relation.12. The exercise apparatus of claim 11 wherein a portion of the carriage engages the spring support cross member to capture the carriage on the track members when the track members are collapsed.13. An exercise apparatus comprising:a generally rectangular frame having a head end, a foot end and a pair of spaced apart parallel track members therebetween, each track member having a head end rail member telescopically received in a tubular foot end rail member; a movable carriage mounted on the track members for movement along the track members between the head and foot ends; the carriage having a sheet metal frame folded to form two spaced parallel channels that fit over the track members, a plurality of platform portions, and a plurality of transverse ribs between the channels; and a first set of roller wheels mounted to an underside of the carriage frame rolling on the head end rail member, and a second set of roller wheels mounted to the underside of the carriage frame rolling on the foot end rail members. 14. The exercise apparatus of claim 13 wherein the roller wheels are located at each end of the channels of the carriage frame.15. The apparatus of claim 13 further comprising a carriage pad positioned on the carriage frame wherein the channels extend beyond the carriage pad; and each of the ends of the channels has a resilient bumper to minimize shock loads when the carriage frame bumps with the head end or the foot end of the rectangular frame.16. The exercise apparatus of claim 13 wherein a carriage stop cross member is fastened to the underside of the head end of each of the foot end rail member and spans between the foot end rail members to maintain the foot end rail members in a parallel relation.17. The exercise apparatus of claim 13 wherein each foot end rail member has an external guide around an open end of the foot end rail member; andan internal guide located on the head end rail member within the foot end rail member, the external guide and internal guide allows smooth movement for the head end rail member along an inside of the foot end rail member. 18. The exercise apparatus of claim 17 wherein the foot end rail member has a rail member pin which a user can tighten to allow smooth movement of the head end and foot end rail members.19. The exercise apparatus of claim 13 wherein the track members and are made of aluminum and the carriage frame is made of steel sheet metal.20. An exercise apparatus comprising:a generally rectangular frame having a head end, a foot end and a pair of spaced apart parallel track members therebetween; a movable carriage mounted on the rectangular frame for movement along the track members between the head and foot ends; a plurality of elongated elastic members extending between the carriage and the foot end of the rectangular frame; the foot end comprising a folded sheet metal body having a horizontal platform portion and a vertical end wall portion and a separate piece forming a channel extruding from the foot end for supporting a removable jump board; and a removable U shaped foot support bar supported by the foot end sheet metal body. 21. The exercise apparatus of claim 20 wherein the foot bar has a pair of bent legs.