A frame structure of a loom includes a frame formed by connecting a pair of side frames, to each of which a beam support for supporting a warp beam is fixed, by a plurality of beam materials, and one or more pair of height position setting members arranged between a loom installation surface and each of the side frames. Each of the height position setting members is fixed to the installation surface and the corresponding side frame. The pair of height position setting members are provided as a support structure configured such that a fixed position with respect to the corresponding side frame on at least one of a let-off side and a take-up side is an inner surface or an outer surface of the side frame.

A method of manufacturing a preform including a core and a sole includes contour weaving the preform on a lap roller having a groove or an outgrowth allowing shape weaving of the core and the sole of the preform. At least one portion of the core and at least one portion of the sole include weft yarns which cross each other on common warp yarns.

A method of manufacturing a preform including a core and a sole includes contour weaving the preform on a lap roller having a groove or an outgrowth allowing shape weaving of the core and the sole of the preform. At least one portion of the core and at least one portion of the sole include weft yarns which cross each other on common warp yarns.

A loom includes a rotary shaft bridged to a pair of side frames with being supported via bearings each provided in corresponding one of the side frames, the rotary shaft includes: solid shaft-shaped shaft parts supported by corresponding one of the side frames: and a hollow pipe-shaped main body part located between the shaft parts. The loom includes a bearing structure provided in at least one of existence ranges of the shaft parts between the side frames with respect to an axis line direction of the rotary shaft. The bearing structure includes: a rolling bearing into which one of the shaft parts is fitted; and a support body configured to support the rolling bearing.

A loom includes a rotary shaft bridged to a pair of side frames with being supported via bearings each provided in corresponding one of the side frames, the rotary shaft includes: solid shaft-shaped shaft parts supported by corresponding one of the side frames: and a hollow pipe-shaped main body part located between the shaft parts. The loom includes a bearing structure provided in at least one of existence ranges of the shaft parts between the side frames with respect to an axis line direction of the rotary shaft. The bearing structure includes: a rolling bearing into which one of the shaft parts is fitted; and a support body configured to support the rolling bearing.

A loom includes a loom frame including a pair of side frames, and heddle frame guides. An inner wall of at least one side frame has, as a reference position, a position of a part, which supports the heddle frame guide in a warp direction, of an inner surface of the inner wall with respect to a width direction of the loom and at least one support part is formed to be an offset support part at which an inner end in a support position of a bearing is located on a more inner side of the loom frame than the reference position.

A driving-force transmission mechanism includes a driving-force transmission shaft that is provided so as to protrude from a side wall of a side frame while extending parallel to a driving shaft within a space of the side frame and connected to a driving motor, and a gear train that connects the driving-force transmission shaft and a driving shaft.

A driving-force transmission mechanism includes a driving-force transmission shaft that is provided so as to protrude from a side wall of a side frame while extending parallel to a driving shaft within a space of the side frame and connected to a driving motor, and a gear train that connects the driving-force transmission shaft and a driving shaft.

A driving-force transmission mechanism includes a driving-force transmission shaft that is provided so as to protrude from a side wall of a side frame while extending parallel to a driving shaft 30 within a space of the side frame, the driving-force transmission shall being connected to a driving motor, and to which an opening device is connected, and a transmission mechanism that connects the driving-force transmission shaft and the driving shaft, and a braking device is connected to the driving-force transmission shaft.

A driving-force transmission mechanism includes a driving-force transmission shaft that is provided so as to protrude from a side wall of a side frame while extending parallel to a driving shaft 30 within a space of the side frame, the driving-force transmission shall being connected to a driving motor, and to which an opening device is connected, and a transmission mechanism that connects the driving-force transmission shaft and the driving shaft, and a braking device is connected to the driving-force transmission shaft.