Abstract: Conversion of a circular knitting machine having a particular diameter of needle cylinder to a machine having a different diameter of needle cylinder is permitted within a limited range of sizes of needle cylinders. This conversion is made possible by providing a plurality of sets of segmental knitting cam support blocks which may be positioned around needle cylinders of different diameters to reduce the normal number of parts which must be replaced when changing a particular knitting machine from one size needle cylinder to another. The number of yarn feeders associated with each segmental knitting cam support blocks of each set is determined so that the number of yarn feeders supported by each segmental knitting cam support block is equivalent to an integral multiple of one pitch covered by one yarn feeder.

Abstract: A helmet retention system includes a junction plate which, when tilted relative to the wearer's cheek, loosens its grip, on a chin strap. The plate is attached to a strap or straps which are in turn attached to the helmet. The plate has a triangular cross section cross piece with narrow lands having edges normally gripping the chin strap. Also, the helmet has a lower outer side which loops about the helmet and is shaped to grip a replaceable textile band, which is decorative.

Abstract: A rolling-up apparatus disposed below the knitting unit of a circular knitting machine has a pair of support frames rotatable and stoppable in synchronism with the knitting unit. A take-up spool, having a pair of spool members subdividing it lengthwise, is supported by the support frames and is rotatable about a horizontal axis. The spool members are advanced to a rolling-up position to clamp the leading end of the fabric and then rotated to roll up the fabric thereon. The spool members are withdrawn from the rolled-up fabric, which is then delivered from the knitting machine. The spool members are advanced again to the rolling-up position to roll up the subsequent portion of fabric, after part of it has been deflected into the path of the path of the spool members by a fabric shifting member.

Abstract: Automatic device for detaching the cam followers in a sewing machine where a selector knob, when it is rotated, provides the detachment of the cam followers in the first portion of rotation, and positions the desired cam in correspondence of the cam follower in the second portion of rotation. On the reduction collar of the selector knob two opposite grooves are made out, which engage pins transmitting the translation movement to a shaft which operates a cam follower detaching lever.

Abstract: The device feeds winding threads in a winding thread machine to its knitting needles for the production of pattern extending in the longitudinal direction of the produced tubular fabric. The device has a number of bore devices arranged above the knitting needles, which number corresponds to the number of winding threads, a winding device for each winding thread, which device has a passage for the winding thread at its free end region, a bearing device for each winding device with which the passage is movable over the highest position of the needle hooks over an arcuate section, a control device for controlling the movement of the winding device, and a displacer arm which is seated, according to height position, between the winding device and the needles situated beneath it and prevents the insertion of the winding thread into needles not to be wound. The end portion of the bore device before the passage is a hollow shaft, the geometrical longitudinal axis of which points from above at the passing needles.

Abstract: An insertion device for inserting a wrap thread in a circular knitting machine having a plurality of knitting needles with hooks. The machine has a plurality of successive knitting systems for the production of patterns extending in the longitudinal direction of a produced tubular fabric. The inserting device has a free end region and a passage for the wrap thread at the free end region. There is further a toothed belt for controlling the movement of the inserting device and a wheel meshing with the toothed belt. The inserting device further comprises a small bar having an upper end firmly connected with the wheel and a lower free end protruding towards the needles.

Abstract: A device for processing leather or hide products includes one or a number of sieve drums openable at two end faces and supported in the housing of the device for rotation. The sieve drum is supported on the housing by means of a four point-contact bearing which is sealed against gaseous or fluidic medium filling the drum.

Abstract: A needle guard for an industrial zigzag sewing machine designed to provide support for the sewing needle in all lateral positions of the needle. The needle guard provides a lead in surface to return an already deflected needle to a supporting surface which in a first embodiment lies in a plane immediately adjacent a plane including the circular path traversed by the loop seizing beak. In a second embodiment a supporting surface is provided which compensates for the point of contact variations due to the cone pointed end of the sewing needle.

Abstract: Patterned pile (terry or plush) fabrics are made on circular knitting machines with cylinder and sinker ring or latch needles and pile elements (pile sinkers, pile hooks, latch needles). The pile elements are not selected, but perform their pile forming motions every knitting cycle. The latch needles of the cylinder are, however, selected both for knitting desired structures in the ground or base fabric and for forming the pile loops in the desired pile regions. The needles selected to form pile loops engage the pile thread fed at a higher level than the ground thread, which is fed at a level such that it is not affected by the pile elements, e.g. below the webs of pile sinkers. The ground thread is held in non-pile forming needles with their hooks at the level of the pile elements while the pile thread is fed to further extended needles which are then retracted to the same level as the needles holding the ground thread before all the needles are retracted to the knock-over position.

Abstract: A yarn-feeding apparatus for selective positive feeding of several yarns to a knitting machine, comprising a sensor for generating sensor signals, the sensor signals representing the respective feeding condition or non-feeding condition of the yarns, and an error detection unit connected to the sensor for turning off the knitting machine in response to predetermined sensor signal combinations representing a yarn breakage and/or a yarn over-feed and/or a yarn change fault. For shortening the response time of the error detection unit and for enhancing the reliability thereof, the error detection unit comprises a working position sensing unit for generating position data representing the working position of the knitting machine, a logic circuit for deriving a yarn changing signal from the sensor signals, and a memory unit for storing yarn changing position data.

Abstract: The fleshing machine according to the invention comprises a supporting frame, which bears two parallel blade cylinders, and on which two sliding heads provided with bearing, pressing and drawing rollers are mounted. The heads press the skin between the rollers and draw it under the action first of one and then of the other blade cylinder for the complete fleshing of the skin, in two stages beginning from the middle while keeping the skin pressed during the entire processing cycle.

Abstract: A bi-directional overrunning clutch comprises a drive shaft for transmitting a rotational driving force, a drive clutch member which is rotated with the drive shaft, a driven clutch member in engagement with the drive clutch to receive rotational motion thereof and movable axially to transmit the rotational motion to a hub, and a brake member to impart a desired braking force to rotational movement of the driven clutch member. In a two wheel running mode, the driven clutch member is disengaged from the hub so that the driving force, which is received by a non-driven wheel from the road surface, is limited to the wheel only.

Abstract: A sewing machine has a stitch control pulse motor for changing the needle position and is connected to a needle plate by means of an intermediate control device which is operated by a starting device of the machine, to change the needle dropping hole.

Abstract: The operator of a taphole drilling apparatus for blast furnaces performs manual changes on the apparatus in its safe position of rest and operation by remote control and automatic latching in hazardous taphole work including drilling and subsequent driving, release, and extraction of a tap bar. The usual guide rail (22) carrying reciprocably a hammer drill (30) thereon incorporates a remotely openable automatically latching centralizer (42) at its forward end and an extraction carriage (29) on which, after removal of the drill steel (43), an impact sleeve (50) can be manually mounted for being impacted by the hammer drill (30). In one mounting position (FIG. 5) of the impact sleeve (50), a latch (57) therein is biased to automatically latch the shank of a tap bar (53) thereto for extraction by impacts. In a 180.degree. counter-turned position the latch (57) will fall aside and the mounted sleeve (50) is used to drive the tap bar while guided by the centralizer (42).

Abstract: A closure for a pair of sliding doors is provided that allows a user to open and automatically close both doors of a pair of sliding doors. The doors can be operated individually or simultaneously. The closure includes a pivoting link having two members, one fixed to each door, and a biasing device for pivoting the members and closing the doors.

Abstract: A book holder for attachment to kitchen cabinets, shelves and the like and adapted for permanent mounting thereon includes a pivotally mounted book supporting portion which can be extended forward and below the leading edge of the cabinet or shelf without occupying table or counter space and which can be moved into a concealed position and stored beneath the cabinet. The book holder further includes an adjustable support arm which can change the angle of the book supporting portion when extended.

Abstract: The frame of a creel includes vertical support columns rigidly interconnected at their upper ends by a framework arranged so as to permit the frame to be positioned astride a circular-knitting machine with the columns disposed around the machine itself and with the framework at a height such as not to interfere with the movement of personnel about the machine. A vertically-movable slide is associated with each column, the slides being rigidly interconnected by a peripheral bobbin-carrier support structure. A driving device is provided for raising and lowering all the slides in unison in order to raise the peripheral structure to an upper position at a height at which it does not interfere with the movement of personnel about the machine and to lower it, respectively, to a lower position in which the structure surrounds the machine and is located at a height such as to allow manual access to bobbins which are on the bobbin-carrier.

Abstract: Apparatus for manually producing a knit fabric comprises a series of knitting supports positioned along the edge of a base member on which supports the fabric is produced and supported, and at least one curved needle having a pair of yarn-threading eyes, which needle carries yarn from a yarn supply and is manipulated in conjunction with the supports to produce stitches thereon.

Abstract: A dashpot type door closer having an internal mechanism which will latch the door in an open position when the door is opened a sufficient distance, and which will release the door from a latched open position when the door is moved slightly more in the opening direction. A piston rod having a latching member extends through the internal mechanism and the latching member is pivoted between latched and unlatched positions by the internal mechanism.

Abstract: A thread handling system for a sewing machine is provided with elongate thread holding members formed for frictional contact of both members with thread during movement of the thread in the holder free of a takeup, and both formed and placed to cause thread in the thread holder to be pulled by the takeup away from one of the members and frictional drag on the thread holder reduced during movement of the takeup in the stitch setting direction.