Abstract: A light transmitting panel composed of at least two panes held in spaced relation by a spacer assembly to define at least one space between panes is given improved sound damping properties by employing panes which exhibit at least two different masses per unit surface area, by causing the space between panes to be sealed from the external atmosphere, and by filling this space with a gaseous medium whose composition is such that the velocity of sound propagation therethrough is different from that in dry air at the same pressure and temperature as the medium.

Abstract: An improved bridging clip is disclosed for securing bridging members to composite truss joists having metal cross bracing and wooden chords.

Abstract: A clip secure a roofing ridge- or hip-cap to a building structure. The lower part of the clip is anchored to the building structure and the upper part passes between adjacent cap pieces, forming the continuous roof capping, and overlies the upper surfaces of both cap pieces. The clip is adjustable to suit the requirements of individual applications.

Abstract: This composite beam structure is built up from at least two relatively rigid members, which may be of extruded aluminum and at least one relatively flexible web, which may be corrugated sheet aluminum. The web connects the relatively rigid members. The web has relatively short pitch, shallow corrugations in its margins to facilitate its connection to the rigid members, and relatively long pitch, deep corrugations between its margins to provide increased stress resistance. A box beam modification uses two relatively rigid members and two corrugated webs.

Abstract: I-beam studs of sheet metal have overlapped shaftwall portions having holes to provide for flow of cooling air along the overlapped portions to prevent failure of the studs from fire. First drywall sheets are mounted in the studs on the shaftwall sides thereof, and second drywall sheets are secured to the studs at the corridor sides thereof.

Abstract: There is disclosed a post footing form holder and stabilizer system which includes a collar formed by a peripheral side wall and being open at the top and bottom ends thereof, a flange positioned along the bottom edge and extending inwardly for a short distance thereby to act as a bottom stop for a post form inserted within the collar, a plurality of legs mounted on the collar and extending downwardly therefrom and having stop means associated with each leg, each of the stop means being spaced a distance upwardly from the lower end of the legs, and stabilizer means formed by a clamp ring consisting of a ring wall having an interrupted portion, clamp means overlying the interrupted portion and constructed to draw the opposed ends of the interrupted portion together and positionally lock in a closed position, the ring further including a plurality of tie means mounted thereon along the outer surface and a plurality of stabilizer rods constructed for attachment to the tie means at one end, and to the ground surf

Abstract: Preformed concrete panels are described for use in the construction of buildings. Roof panels are designed such that they have self-sealing abutting edges when assembled, and the roof panels interlock with wall panels and, preferably, with other roof panels supported by a center building beam. One type of wall panel has a support member projecting form one surface which is adapted to support a floor structure.

Abstract: The articles are enclosed in pockets, formed and sealed in plastic windows, of a foldable paperboard blank which has window openings on opposite sides of a fold line, the blank being covered on one surface by a heat-deformable and heat-sealable plastic sheet, at least over that area having the openings or windows formed therein. A blank support, a molding station and a blank discharge station are arranged along a linear blank travel path at substantially equal spacings from each other. A carrier is oscillatable in a vertical plane including the center line of the travel path, and carries air-released vacuum pick-up means at longitudinal spacings substantially equal to the spacings between the support and the stations. The carrier is oscillated between a first position and a second position. In the first position, a first vacuum pick-up means grips a blank on the support and a second vacuum pick-up means grips a blank, which has already been heated and has pockets formed therein, at the molding station.

Abstract: Device for packaging an object in foil wherein a pair of foils are disposed on both sides of a packaging plane and, in a central welding device, are welded to one another enclosing therebetween the object to be packaged, and wherein the foil webs travel in a given direction and, for each foil web, a foil-web parting and/or foil-web re-welding device is provided, serving to effect an exchange of foils and having functional members for parting a foil web as well as for welding a pair of juxtaposed foil-web ends together, the functional members extending transversely to the foil-web travel direction, the parting and/or re-welding device being disposed between a bearing which carries one foil roll, and a foil-web pullng device located upstream of the central welding device in the foil-web travel direction, includes at least another bearing carrying a foil roll disposed in spaced relationship to and behind the first-mentioned foil-roll bearing, means defining respective separate foil-web guide paths for the foil w

Abstract: The invention relates to the food industry and can be utilized to utmost advantage in the production of sausage-like articles, sausage-shaped processed cheeses, packages of minced meat, flour, curd cream, cereals and like products.The disclosed automatic machine includes a chargeable hopper for the product to be packaged, a positive displacement pump, a nozzle with a sleeve thereon, for feeding the product to be packaged into a casing, a mechanism for supplying a flat web of an elastic film onto the sleeve for forming the longitudinal layer of the casing on this sleeve and a device for pulling the casing stuffed with the product being packaged off the nozzle. In accordance with the invention, the automatic machine further including a mechanism for supplying a web of flat elastic film for forming a helically wound layer of the casing superimposed upon the longitudinal layer, the device for pulling the casing with the product being packaged off the nozzle being mounted directly on the latter.

Abstract: A wrapping paper supplying device used in a coin wrapping apparatus for wrapping stacks of coins of various denominations with paper comprises a pair of paper feeding rollers, a mechanism for interrupting the operation of the paper feeding rollers, a mechanism for setting the position of a cutter for obtaining a length of the paper suitable for wrapping the coins of a specific denomination, a cutter position detecting device operating the interrupting mechanism in accordance with the set position of the cutter, and a cam mechanism for varying the operational period of the interrupting mechanism depending on the cutter set position.

Abstract: A packaging machine for inserting semi-compressible articles into preformed bags comprises an upper gripping member, a lower gripping member which can be raised towards the upper gripping member to clamp therebetween extension portions of a stack of bags, the lower gripping member mounting means for temporarily retaining the bags of the stack of bags relative to the lower gripping member and means for inserting articles through the open end of the upper bag. The arrangement is such that the gripping members grip the extensions of the bags so that articles can be inserted into the upper bag, the articles undergoing limited compression against the end wall of the bag after which the clamping pressure is released. The filled bag then moves relative to the lower gripping member, the force applied to the bag being sufficient to overcome the restraint imposed by the temporary retaining means.

Abstract: The open mouth of a container such as a bag or sack which is filled with produce or other goods is folded by means of a single oscillatory finger which forms a fold in the leading and trailing sides of the bag as it travels along a path, as by being carried on a conveyor. The finger is oscillated by means of a mechanism driven by the bag which causes the finger to execute a forward stroke of oscillation whereby to form the fold in the leading side of the bag and then to form the fold in the trailing side of the bag as the finger executes its return stroke. The mechanism provides, as by means of a cam which oscillates with the finger, the timing of the forward and return strokes in coordination with the movement of the bag such that the bag may move continuously during the form folding operation. The fold is maintained by applying lateral pressure on opposite sides of the fold, as by means of opposed belts which engage the bag as the bag leaves the vicinity of the finger.

Abstract: A compact wrapping paper storing device capable of accommodating a variety of rolls of wrapping paper has a rotary body on which a plurality of wrapping paper placing beds are radially disposed, the placing beds holding thereon respective rolls of wrapping paper in an upright attitude around wrapping paper roll supporting spindles so positioned according to the heights of the rolls of wrapping paper that the outer upper edge portions of the rolls placed on the beds lie within one and the same circle. Placing angles of the placing beds are unequally formed in a manner such that the lower surface of each adjacently preceding bed is positioned as close as possible to the inner upper edge portion of the roll placed on the succeeding bed. The device further has a cutting device adapted to cut the wrapping paper by utilization of tension produced in the wrapping paper.

Abstract: The present invention relates to a tobacco harvester having an automatic leaf spreader associated therewith for uniformly spreading defoliated tobacco leaves into an opened top leaf receiving structure such as a trailer, container, or box-type rack such that the leaf receiving structure is generally uniformly filled throughout from bottom to top by the spreader during the harvesting operation.

Abstract: A tobacco topping apparatus is provided, suitable for mounting on a tobacco harvester, the tobacco topping apparatus having a housing assembly in which power operated cutting means having a substantially horizontally disposed cutting blade for topping a tobacco plant and severed flower portion clearing device are secured; the assembly having a front opening therein opening in the direction of movement of the apparatus down a row of tobacco plants, when the apparatus is used to top such row of tobacco plants, a wall formation having a discharge opening therein, the area of the wall formation in which the discharge opening is situate being determined by the direction of rotation of the cutting blade of the cutting means, a base having diverging edge portions defining guide means leading into an inlet slot opening in the leading edge of the base in the direction of movement of the apparatus when the apparatus is used to top tobacco plants, the guide means for guiding the stalk of the plant into the slot, and a d

Abstract: Bagging apparatus for a rotary mower in which a grass-catching bag and discharge chute may be detached from the mower in a one-handed operation by the user. A portion of the apparatus connecting the mower housing with the chute and bag also functions as a discharge deflector when the mower is used with the bag removed. The downward deflector is spring-biased toward the downward position and slidably engages a chute to which the grass-catching bag may be attached. Also disclosed is a hook-shaped locking slot on the top of the mower housing into which a projection on the chute may be urged by the spring-biased deflector to positively fasten the chute and mower housing during operation in a bagging mode.

Abstract: A riding type mower is provided with a grass catcher attachment having removable container and cover structures. The container structure includes a horizontally disposed quadrilateral frame carrying a large container. The cover structure includes a molded cover and a screen extending downwardly from the cover with resilient clips or latches at the lower edge adapted to snap onto the container frame. A discharge chute from the mower directs the cut material rearwardly to a blower mounted on the rear of the mower. The blower discharge directs the cut grass upwardly toward a deflector formed by the shape of the top of the cover. The user may use the container to catch cut grass or may at his option place three plastic bags, such as garbage can liner bags, in lateral side-by-side relationship inside the container. The plastic bags are held in place by four spring loaded retainers and by the clips which hold the cover structure onto the container frame.

Abstract: A mowing device comprising a housing extending transversely of the direction of movement of said device, a plurality of freely cutting cutting members rotatably journalled on said housing and a driving gear arranged in said housing and formed by a series of gears for driving the cutting members, has the problem that through deformation of the cover of the housing to which the gears are journalled, the relative position of the cutting members and the accurate relative position of the gears may be disturbed.In order to avoid this problem, the cutting members are rotatably journalled with the aid of lower rolling bearing means with respect to the bottom and with the aid of upper rolling bearing means with respect to the cover of the housing.

Abstract: A rake is described which allows for adjustment between an ordinary lateral displacement working position and a medial delivery of materials. This is accomplished by providing a means whereby the main beam supporting the sets of raking wheels at each end is made into a two-piece beam which can be coupled into its standard rigid position or which can be pivoted forwardly relative to its direction of travel to change the angular disposition of the raking wheels relative to each other and thus change the delivery of materials from lateral to medial.

Abstract: Servicing apparatus, such as rotor cleaning and yarn piecing apparatus, for servicing individual spinning assemblies of open-end spinning machines is provided. In order to accommodate usage of a single servicing instrument for several different spinning machines, operating at different conditions for producing different yarns, program control apparatus, including a plurality of control programs which are distinguished from one another as the sequence and timing of servicing operations, is provided. In preferred embodiments, the spinning machines include switch setting apparatus for switching the servicing instrument to the proper program in response to movement of the servicing instrument adjacent the spinning machine to be serviced.

Abstract: A pneumatic threader for a twisting apparatus has a nozzle formed with a counterbore so that the nozzle can be fitted over the end of the inlet tube of the twisting apparatus. In addition this nozzle is formed with a slot opening toward the tube and extending beyond the counterbore so that a filament engaged in this slot can freely pass into the tube. The slot may extend helically up around the tube so that automatic clamping of the filament is effected when it reaches the end of the helix. It is also possible to form the slot parallel to the air passage in the nozzle and to provide a clamping member for holding the filament end in the upper portion of this slot. To this end a lost-motion coupling may be provided between the valve-operating trigger of the pneumatic threading apparatus and the operating lever for opening of the clamp shortly after air flow has been started.

Abstract: A method and an apparatus for producing crimped filament yarns, said apparatus comprising at least one first twister member and at least one second twister member, each of said twister members having a work surface made of a synthetic rubber having a relatively small friction coefficient therebetween. These twister members are arranged so that their work surfaces cross each other at a selectable angle in contact relationship to provide at least one crossing zone for nipping therebetween at least one thermoplastic filament yarn which is fed to twist this filament yarn between the contacting work surfaces successively and at the same time to urge this filament to discharge from this crossing zone successively as the twister members are driven. This method and apparatus allow filament yarns to be imparted desired false-twisting effect, practically without being damaged and without causing uneven twists, at a high operation rate of 800 - 1000 meters per minute.

Abstract: A spindle adapted for mounting on the framework of a false twist texturizing machine. The spindle includes a platen having three bosses mounted perpendicularly thereon, the bosses being positioned on the platen to form a triangle. Friction discs are carried on the bosses and overlap one another to define a zig-zag path for the yarn. A two-piece fixed guide tube aligned with the center of the triangle formed by the bosses feeds the yarn into and out from the spindle. A motor pulley is mounted on a lever which pivotally attaches to the platen, the motor pulley being adapted to engage a tangential belt disposed adjacent the platen to impart rotary motion to the pulley. A belt drive interconnects the motor pulley with the bosses to rotate the same. A rod pivots the lever to engage or disengage the motor pulley with the tangential belt and control rotation of the bosses.

Abstract: A highly accurate timer for timing out intervals in the order of seconds or minutes in length is disclosed. The timer comprises actuator means and digital means responsive to the actuator means for providing control signals. Coupling means provides the timer with an a.c. signal having a first characteristic periodic frequency. A clock is responsive to the coupling means to produce a series of pulses having a second characteristic frequency related to the first characteristic frequency. A counter is adapted for receiving a selectable value and is responsive to the control signals from the digital means to count pulses from the clock and produce an output when a selected value entered into the counter has been counted out. Programming means is utilized to enter a desired digital value into the counter. A switch switches a.c. power to and from external units as a function of the condition of the counter.

Abstract: An electrical clock is provided in which pulses of a 10% duty cycle are repeatedly applied at a one second rate to a solenoid which attracts an armature attached to a reciprocating ratchet once every second, the reciprocating ratchet being returned to a neutral position between each pulse. The reciprocating ratchet drives a toothed wheel which is located on a main axis of the clock frame view suitable pawls. The second hand of the clock is directly coupled by a second hand shaft to the toothed wheel. The toothed wheel, by means of a pinion, drives an intermediate gear which is located outbound from the main axis. The intermediate gear drives a minute gear, the minute gear being mounted on a minute tube concentric with the second hand shaft. The minute hand is directly affixed to the minute hand tube. The minute gear, by means of a pinion, drives an outbound motion gear, the motion gear in turn driving an hour gear coupled to an hour tube whose axis is concentric with the second shaft and the minute tube.

Abstract: For sleep promotion and for sleeper awakening an audio system including a wide band audio frequency generator is provided with an output speaker, volume and tone selectors, a time-alarm signalling system, and means for connection with a house alarm system to sound the time-alarm when the house alarm system is actuated; operation is suspended when the alarm system is actuated for any reason; volume control in response to ambient noise is also provided.

Abstract: A machine for forming a Bismarck chain has first and second wire twisting heads alternately feeding and turning two wire helices disposed at an angle of about 90.degree. to each other. The first head adds a first helix of wire as a new link to the last link of the chain, and the second head adds a second helix of wire as a new link to the first helix. The first and second helices are cut after their formation. Thereafter, the chain is pulled upwardly away from the wire twisting heads a distance of two chain lengths. The last length in the chain is held above the wire twisting heads as the wire twisting heads feed and turn two new wire helices.

Abstract: In a gas turbine engine of the type which includes an inlet particle separator, there is provided apparatus for measuring the temperature of the air entering the engine compressor.A remote temperature probe is disposed in a feed duct having an inlet in flow communication with the engine inlet upstream of the particle separator and an outlet disposed intermediate the particle separator and inlet to the engine compressor. Airflow through the feed duct is generated by the pressure drop across the particle separator without the use of compressor bleed or other air sources which result in performance degradation of the engine. Temperature measurement errors during engine anti-icing are reduced by selectively cross-bleeding a predetermined quantity of anti-icing air into the feed duct during activation of the engine's anti-icing system. The response rate of the probe is significantly improved by enclosing the probe in an impingement heat transfer blanket.

Abstract: A combustion system using a dilute hydrogen peroxide(H.sub.2 O.sub.2) solon as an oxidizer. The system uses the concept of Liquid Phase Extraction and eliminates part of the water produced during the decomposition of hydrogen peroxide into water (H.sub.2 O) and oxygen (O.sub.2). The elimination of a part of the water produced during the decomposition allows the energy resulting from the combustion of oxygen and a fuel to be used to increase the prime mover performance of the system. The system comprises a decomposition chamber, a liquid/gas separator, a heat exchanger and a combustion chamber. Dilute hydrogen peroxide solution is catalytically decomposed in the decomposition chamber. The oxygen and the water produced during the decomposition of H.sub.2 O.sub.2 are separated by means of the separator. Some portion of the separated water is extracted.

Abstract: Gas turbine engine power plants sometimes are provided with thrust reversing equipment, the outlet of which is close to the power plant air intake. Such arrangements create re-ingestion problems. There is described herein an apparatus which either maintains the upstream portion of reversed flow in a given position with respect to the plane of the air intake or alternatively destroys the reversed flow entirely.

Abstract: A control system for supplying uncured propellant into the combustion char of a missile. The system includes a moving injector cooperating with a pressurized putty-like uncured propellant. This combination provides the missile with a propulsion system having rapid wide range throttling, shut off and restart capabilities.

Abstract: The invention relates to an improvement in a torque converter which includes a main stator, a pump and a turbine. The improvement comprises a novel auxiliary stator intermediate the main stator and the pump, said auxiliary stator including a plurality of holes therethrough adjacent the periphery thereof. Also part of the improvement are a plurality of vanes fixedly attached to a plurality of shafts which are rotatably mounted through said holes for adjustably directing flow of hydraulic fluid from the main stator through the vanes and to the pump. A plurality of handles, one attached at a fixed angle to an end of each of the shafts removed from the vane thereon, also forms a part of the improvement. A sleeve is provided which includes a plurality of slots at one end thereof the slots being in one to one relation with the number of handles, one handle being slidably held in each of said slots.

Abstract: A jack pump, such as the type capable of use in pumping crude oil from an oil well, the jack pump including a double acting piston and cylinder motor with the piston rod of the motor being adapted to be connected to the polished rod projecting upwardly from a well head. A variable displacement hydraulic pump, which is driven by a motor or engine, is included in a closed hydraulic loop wherein conduits are connected to a pair of output ports of the pump. A pump control means controls the direction and volume of flow in the loop so as to establish a total velocity profile during the complete pumping cycle and to determine the length and position of the stroke of the piston rod.

Abstract: This energy system comprises a metal sphere equipped on the outside thereof with two centrally located arc-shaped and pivoted arms which meet on the top of the sphere and are joined by means of a spring loaded connection. Each of said arms consists of a bank of spaced convex lenses which focus the rays of the sun into intensely hot focal points on the surface of the sphere. Inside, the sphere are coils of pipe containing water which is converted to steam by means of a heating liquid in which these pipes are immersed, so that the heating liquid which is heated by the surface of the sphere, in turn heats the coiled pipe changing the contained water to steam. The steam is fed to an engine or turbine which in turn powers a dynamo which supplies electrical power. The heating fluid inside the sphere also circulates through a furnace which takes over the heating of the liquid during the absence of the sun's rays.

Abstract: A minor portion of low pressure exhaust vapor such as exhaust steam is compressed to a temperature above that which a major part of said exhaust vapor is being condensed, suitably by a centrifugal compressor driven by higher pressure vapor from the same source as that which powers a principal turbine that furnishes most of said exhaust vapor. The major part of said exhaust vapor is condensed and the resulting main condensate is passed into heat exchange with the compressed minor portion of the exhaust vapor for generating a heated resulting main condensate and a secondary condensate from condensation of the compressed exhaust vapor. These condensates are withdrawn, suitably for deaeration when the vapor used is steam.

Abstract: A method of forming a plurality of horizontal barriers in situ at a preselected depth beneath the soil surface and in a plane substantially parallel to the soil surface so as to be coextensive with a desired area, the barriers being made of a thermoplastic material such as asphalt for example, and forming further barriers joined to the horizontal barriers and extending vertically or obliquely toward the soil surface in order to surround the above-mentioned area, thereby improving soil having a poor water retention property. The method further comprises the steps of filling up chambers in a plow moving in the soil with the barrier forming material in the liquid form, leaking the material out of the chambers through passages of a given gap, and spreading the formed film laterally uniform by an ironing portion connected with the plow near the passages so as to render the formed water barrier uniform in thickness and free from apertures.

Abstract: A method for coupling together two generally axially aligned structures, preferably concrete tunnel sections, is disclosed. The method includes mounting coupling apparatus including coupling means having an outwardly facing socket with a tapered thread therein to a first structure, mounting a coupling tendon having a tapered threaded end dimensioned to mate with the socket to a second structure, coupling the tendon to the coupling means and applying an axial tension force to the tendon and coupling means. The method and apparatus enables coupling together of substantially misalignment structures which could not be accomplished if conventional cylindrical threads were employed.

Abstract: A precast concrete pile and cofferdams, etc., made therefrom, employing a new method. A rectangular main stem extends from the top to the bottom of the pile, a lower portion of the pile consisting exclusively of the main stem. An upper portion of the pile incorporates, integrally with the stem, a pair of generally rectangular flanges each extending out from one of two opposing faces along one edge of the stem and set back from the opposite edge. The piles may be driven next to each other, with the flanges of successive piles overlapping, to make a continuous cofferdam or retaining wall, especially well suited for bridge piers.

Abstract: Apparatus for isolating from a body of water a predetermined bottom area and a volume of water or other liquid extending above the bottom area up to the surface of the body of water, comprising a flexible wall member with a flexible and conforming base section formed on its lowermost edge. The base section is adapted to be filled selectively from the surface of the body of water to anchor the wall member to the bottom. A float member is secured to the uppermost section of the wall member to keep the wall member floating above the surface of the body of water.

Abstract: A grout seal for a piling driven through a cylindrical platform leg into submerged strata includes an array of spring members having upper and lower end portions of cylindrical configuration, the lower and upper extremities of the portions, respectively, defining boundaries of inward diversion to form the central portion of the array. A reinforced elastomeric outer cover is provided for the central portion of the array. The array also includes an elastomeric pad mounted within the array and having a cylindrical inner face for contact with the pilings and an outer face conforming with the central portion of the array.

Abstract: A method and apparatus for generating heat and vaporizing of liquids, and for providing cooling by using a continuous flow centrifuge to compress a gas with accompanying temperature increase and removing heat to another fluid from said gas in compressed state; said gas then being passed from the first rotor via nozzles mounted on said first rotor in backward direction thus reducing the absolute tangential velocity of said gaseous fluid; said gaseous fluid being then passed to a second rotor for which the rotor tip speed may be nearly the same as the velocity of said entering gaseous fluid. After said gaseous fluid enters the second rotor, it is then passed inward within said second rotor and discharged near said second rotor center. Work is supplied to said first rotor normally, and recovered in said second rotor. The gaseous fluid may be air, carbon dioxide, or some other fluid. The fluid receiving said heat may be water, ammonia, or some other fluid.

Abstract: A refrigerator machinery compartment air filter for a forced air condenser operative to maintain the proper air flow over the heat transfer surfaces insuring efficient operation. The filter has two sections connected by a flexible hinge allowing for ready insertion and removal from the front of the compartment for ease of cleaning.

Abstract: A .sup.3 He-.sup.4 He dilution refrigerator provided with a variable-flow restriction member in the supply duct for flowing the condensed helium into the mixing chamber, such member being controlled by the flow of condensed helium and having a flat flow passage curve.

Abstract: Coaxially spaced externally toothed gears are bridged and interconnected by a resilient annular gear formed from a coil of flexible material having corrugations shaped to engage the gear teeth. The external peripheral of the annular gear is enclosed by a sleeve member maintaining it in resiliently wedged circumferential driving engagement with the externally toothed gears.

Abstract: A universal joint includes a cross operably connected therein, the cross comprises a body having four trunions extending therefrom along two mutually perpendicular lines, a lubrication network in the body and the trunions to provide lubrication to the cylindrical outer bearing surface of the trunions, the network includes a plurality of branches in communication with and terminating in a counterbore provided internally in each of the trunions, each counterbore having a cylindrical inner surface coaxial with the cylindrical outer bearing surface of the trunions, the counterbore is open at its end opposite the branches, a flow metering member having at least one metering orifice therethrough fixedly disposed within each of the counterbores to meter lubricant flowing from each of the branches downstream into the counterbore and to the bearing means and various bearing surfaces associated therewith including the cylindrical outer bearing surface of the trunions.

Abstract: A crochet needle having a conventional hook and integral body portion and a cut off device at an end opposite the hook. The cut off device comprises a blade with a sharpened edge which is concealed within a second hook which is displaced 180.degree. from the crocheting hook. The edge of the blade is spaced inwardly from the mouth of the cut off hook so as not to form a hazardous device which might injure the hand or finger of the user.

Abstract: A rotatable storage drum is connected for rotation to have yarn wound thereon. The pull-off position of the yarn is controlled by a yarn guide element which is a pin extending into the path of the yarn and forming an acute angle with a plane parallel to the axis of rotation of the drum. The pin is located on a rotatable disk so that the point of the acute angle can face either forwardly or rearwardly of the drum, so that the thread guide element can guide the yarn regardless of the direction of rotation of the drum and without tangling of the yarn if the guide element is set incorrectly with respect to the direction of rotation thereof; the element can also be set in an intermediate position in which it is ineffective with respect to the pull-off position, so that the drum can be used as a demand-storage supply drum, rotatable in either direction without structural modification of the overall apparatus.

Abstract: The invention relates to a method and apparatus for knitting a narrow band in which a special effect yarn for use in the band and the band itself, are knitted simultaneously on one machine and the special effect yarn is taken off and guided directly to the needles knitting the band.

Abstract: The band is of the type commonly known as a "sweatband" adapted to be worn around the wrist or head when playing tennis and other sports. The band is knit with at least some moisture absorbent yarn and is completely formed on a circular knitting machine. The band includes inner and outer integrally knit plies and is usually provided with terry loops extending outwardly from each ply. The inner ply includes first and second sections with adjacent edges joined together with an integrally knit narrow connector tab including twice as many wales as the inner and outer plies.