Abstract: In a circular loom provided with a main drive shaft, a plurality of healds are arranged in a ring-shaped alignment coaxially around the main drive shaft. An annular reed member is stationarily located inside the ring-shaped alignment of the healds and coaxially therearound, wherein shuttles are able to move along an annular passage defined by the annular reed member, a weft taken out from each of the shuttles is inserted to successive sheds created by a shed-forming mechanism and the inserted weft is interwoven with the warps to form a tubular fabric having a predetermined weave structure, by applying a particular shed forming mechanism based upon a principle such that the shedding operations of a unit group of warps to create each one repeat weave structure is controlled to satisfy the crossing condition between said warps and said inserted weft which is defined by said one repeat weave structure.

Abstract: A large format laser scanning system is disclosed that incorporates a compact, wobble free and wavelength insensitive scanning mechanism. The scanning mechanism includes a pentaprism and lens mounted on a rotating frame assembly that is located within a scanning drum. Multiple light beams generated by a light source are passed through the rotating pentaprism and lens to scan a photosensitive medium located on the interior surface of the scanning drum.

Abstract: In a circular loom in which at least one shuttle is continuously travelled in one direction along an annular guide member and a plurality of shed forming mechanisms arranged annularly and coaxially with the guide member are sequentially opened prior to arrival of the shuttle to form a successive sheds through which the shuttle is to be inserted and passed, a warp tension regulating and warp feed apparatus is mounted. In this apparatus, an annular supporting member fixed to a frame of the circular loom is disposed outside the shed forming mechanisms adjacently thereto, a plurality of dancing levers guiding corresponding warps through yarn guides mounted on the top ends thereof are pivoted on the supporting member for respective warps and resilient means for absorbing variations of tensions on the respective warps is connected to the corresponding dancing levers.

Abstract: A shuttle utilized for producing a tubular fabric by a circular loom. The shuttle is provided with an improved structure for easily mounting on or dismounting from said circular loom. This shuttle is further provided with a plurality of guide wheels which ensure stable supporting said shuttle while driving along a guide means of said circular loom by a shuttle propelling mechanism.

Abstract: In a circular loom provided with a motor for driving the loom, and annular guide means for guiding at least one shuttle along the annular guide, when a weft is broken or a yarn package formed on a bobbin held by a shuttle is exhausted, the driving of the circular loom is automatically stopped by a mechanism comprising a first detector for detecting a weft breakage, and/or a second detector for detecting an exhaustion of a yarn package, means for stopping an electric power from a power source to said motor, means for transmitting a signal from said first detector and/or said second detector to said stopping means.The above-mentioned first detector and second detector are mounted on each shuttle.

Abstract: In a circular loom in which at least one shuttle is continuously travelled in one direction along an annular shuttle guide means, and a plurality of shed forming mechanisms arranged annularly and coaxially with the guide means are sequentially opened prior to arrival of the shuttle to form a moving shed through which the shuttle is to be inserted and passed, each of the shed forming mechanisms having a cylindrical cam mechanism which creates an opening movement of the respective healds, a shuttle propelling mechanism is disposed.

Abstract: A circular loom for tape yarn consists of a plurality of shuttles arranged horizontally, and a pair of guide rings arranged at the center of the loom for supporting the inner side of said shuttle, a shuttle race arranged concentrically to said guide rings and which guides the outer portion of the shuttle, a plurality of the heald frames arranged outside of said shuttle race, and provided with a plurality of healds, and a positive shedding device for inducing the shedding motion of the heald frames, which is operated by means of a heald lifting projection provided on a rotating cam disc.