Abstract: A device (1) equipped with pattern-controlled components (2) for pattern-controlled feeding and/or selection of yarn for a textile machine, comprising a plurality of actuators (4) and a cooling circuit (5, 8) through which coolant is flowable for the cooling of the actuators (4), whereby the actuators (4) in the device (1) are installed alongside the cooling circuit (5, 8) and are mountable so as to be detachable so that the actuators can be removed without interrupting the cooling circuit (5, 8). Furthermore, a textile machine comprising such a device (1).

Abstract: A sewing machine, in which a presser foot and a throat plate are detachable, includes a feed dog bracket, a feeding dog and a mounting portion. The feed dog bracket is driven according to a transfer direction of a fabric. The feeding dog transfers the fabric on the throat plate. The mounting portion detachably mounts the feeding dog on the feed dog bracket. The feeding dog includes a cam portion which is mounted on the mounting portion. The cam portion includes first, second and third cam surfaces. The first cam surface has a surface-contact with a first receiving surface of the mounting portion. The second cam surface has a line-contact with an end portion of a second receiving surface of the mounting portion. The third cam surface is pressed by a pressing member of the mounting portion.

Abstract: Provided is a sewing machine including: a pair of feed bars that are incorporated in a cylinder and are each capable of conveying a material by moving to draw elliptical trajectories in side view; an oil seal abutting outer surfaces of the pair of feed bars by surrounding an entire periphery in a direction intersecting a longitudinal direction of the pair of feed bars; and a seal-supporting unit provided on an inner wall of the cylinder and configured to support the oil seal, wherein the pair of feed bars are configured to be movable upward through the opening of the cylinder, the seal-supporting unit includes an upper opening that allows the pair of feed bars to move upward, and the seal-supporting unit is immovable relative to the cylinder when the pair of feed bars move upward through the opening.

Abstract: A compressor assembly is provided and may include a first compression cylinder, a first compression piston disposed within the first compression cylinder that compresses a vapor disposed within the first compression cylinder, and a crankshaft that cycles the first compression piston within the first compression cylinder. The compressor assembly may additionally include a first control piston moveable between a first state restricting passage of intermediate-pressure fluid into the first compression cylinder and a second state permitting passage of intermediate-pressure fluid into the first compression cylinder.

Abstract: A product may include a case, and a shaft that rotates may extend into the case. A bearing may support the shaft at the case. A seal may be positioned around the shaft outboard from the bearing. The bearing may have a first side facing the seal and a second side facing away from the seal. The case may define an inlet to an area between the bearing and the seal. A baffle may extend over the inlet on the second side and radially outside the bearing.

Abstract: A hammer drive mechanism is provided for converting rotary drive from a motor to reciprocatory movement of an impact member of a hammer drill. The mechanism comprises a rotatable plate adapted to be rotated by the motor, an input drive member associated with the rotatable plate in an eccentric position with respect to the axis of rotation of the rotatable plate, an output drive member associated with the impact member, and a crank shaft having a respective driver adjacent each of its ends. Each driver engages with, and is complementary to a respective one of the drive members. At least one end portion of the crank shaft comprises a lubricating aperture which opens into the adjacent driver to provide a lubrication path to the engaging surfaces of the drivers and the drive members.

Abstract: A valve assembly for a dispenser for fluids including: a housing having at least an inlet opening and an outlet opening and a further opening connected or connectable to a fluid displacement mechanism, and a valve member including two parts translatably disposed within the housing, a first part for closing and opening the inlet and a second part for opening and closing the outlet.

Abstract: A needle bar supported in a head unit is connected with a needle bar lever extending from the inside of a sewing machine arm and the needle bar is moved up and down by swing of the needle bar lever about a supporting shaft generated by transmission from a sewing machine main shaft. The sewing machine arm and the head unit are fluid-tightly shielded by a shield plate, and a first sealing part is provided in the shield plate. The first sealing part supports the needle bar lever by fitting a portion of the needle bar lever into seal plates held between a presser plate and a back face of a seal support having a curved shape of a circular arc taken along a swinging locus of the needle bar lever. The inside of the sewing machine arm is oil-lubricated, and the inside of the head unit is grease-lubricated.

Abstract: A lubricant for sewing machines to be supplied to lubricate a movable part of a sewing machine is formed by using, as main components, a plurality of kinds of synthetic esters combined to have consistency within a range of grade 2 to grade 000 (defined by the NLGI (National Lubricating Grease Institute)) under a temperature of 25° C., and a melting point within a range of 70° C. to 150° C.

Abstract: In an upper looper holder guide 7 through which an upper looper holder 12 penetrates, a first oil discharge hole 27 is opened in the edge at the upper end of a through-hole 11 and a second oil discharge hole 28 opened in the groove 26 and are branched off, the opening of the first oil discharge hole 27 contacts with the upper looper holder 12, and the opening of the second oil discharge hole 28 and groove 26 are exposed from a longitudinal hole 6 of an upper looper base 4 when the upper looper holder 12 reaches the top dead center or the bottom dead center. The oil discharge device is composed of a two-layer trochoid pump.

Abstract: In an upper looper holder guide 7 through which an upper looper holder 12 penetrates, a pass hole 25 opened in a spot facing 24, and a groove 26 parallel to the pass hole 25 on the outer circumference of the upper looper holder guide 7 are formed. From the pass hole 25, a first oil discharge hole 27 opened in the edge at the upper end of a through-hole 11 and a second oil discharge hole 28 opened in the groove 26 are branched off, the opening of the first oil discharge hole 27 contacts with the upper looper holder 12, and the opening of the second oil discharge hole 28 and groove 26 are exposed from a longitudinal hole 6 of an upper looper base 4 when the upper looper holder 12 reaches the top dead center or the bottom dead center.

Abstract: A tufting machine has a head, including a plurality of push rods reciprocably driven through push rod seals having a housing connected to the head of the tufting machine. The push rod seals include a driver connected to and moveable relative to the housing, a stack of oil seals is located between the driver and a ledge within the housing. A pressure bearing is located between the oil seals and the housing and the driver respectively. The push rod seal system allows for reciprocatory movement of the push rods therethrough while preventing oil leakage past a reciprocating push rod.

Abstract: An improved thread conditioning device for use as an accessory to conventional sewing machines. Included are a rectangular baseplate with a pair of upstanding projections. One of the projections near the rear portion of the plate extends upwardly and at its extremity has two essentially right angle bands so as to adapt it for swivelably supporting a small platform having two parallel major surfaces on one of which there is fixed a specially shaped adapter having a plurality of different sized cylindrical recesses for receiving any one of a corresponding plurality of different diameter supports. On the other major surface there is affixed a conditioning pad with a pair of thread guides to guide thread into contact with and past an exposed surface of the conditioning pad for use in tensioning and/or lubricating thread. Optimally included are an additional spool holder mounted on a turn-table and a lubricant reservoir for supplying lubricant to the pad.

Abstract: A hook assembly includes a bearing rib on a bobbin case basket or at least a surface layer thereof composed of a synthetic resin, such as a liquid crystal polymer, which has properties such that the amount of the rotating friction generated between such surface layer and an inner surface layer of a groove shaped bearing raceway in which the bearing rib is fitted is lower, with no industrial sewing machine oil therebetween than such industrial sewing machine oil where to be provided therebetween. The hook assembly thus has good durability without any lubrication being provided. Accordingly, oil staining of threads and sewing materials by a lubricant is avoided, and sewing quality is enhanced.

Abstract: A sewing machine having a substantially U-shaped structure includes a bed section, a barrel section connected to the bed section in a substantially perpendicular fashion, and a bracket connected to the arm barrel section in a substantially perpendicular fashion and extended substantially parallel to the bed section. The bracket includes an opening at an upper surface of the bracket and an arm cover engageable with the upper surface of the bracket for closing the arm opening. The arm cover is substantially flush with the upper surface of the bracket when engaged with the upper surface.

Abstract: A method and device is provided for adhesively securing a fabric in place relative to a sewing needle and thread of a sewing machine while applying an image to the fabric. The device replaces the conventional hoop-like device and includes a place to which the fabric to be sewn is adhesively attached. A kit is provided which provides the user with all of the elements required to use the device and a lubricating device is provided for lubricating the needle and/or thread.

Abstract: A lint barrier for a sewing machine which excludes lint from entering the interior of the sewing machine having a machine housing enclosing the internal workings of the machine. The sewing machine also includes an oil cooler adapted to cool oil circulating through the sewing machine, the cooler including a plenum, a radiator and an air source for moving air through the radiator. A conduit connects the air source to the interior of the sewing machine, whereby air is conducted through the conduit and into the interior of the sewing machine to maintain a positive pressure within the sewing machine interior, thereby preventing the entry of lint into the sewing machine interior.

Abstract: A lint barrier for a sewing machine which excludes lint from entering the interior of the sewing machine having a machine housing enclosing the internal workings of the machine. The sewing machine also includes an oil cooler adapted to cool oil circulating through the sewing machine, the cooler including a radiator and an air source for moving air through the radiator. A conduit connects the air source to the interior of the sewing machine, whereby air is conducted through the conduit and into the interior of the sewing machine to maintain a positive pressure within the sewing machine interior, thereby preventing the entry of lint into the sewing machine interior.

Abstract: A dry sewing machine, or a sewing machine which can be operated without oiling. The machine of the preferred embodiment is particularly adapted for making a type 401 two thread chain stitch, used in commercial sewing operations. In addition to employing sealed bearings, novel spreader and rocker frame assemblies are employed.

Abstract: An oil pump assembly having an adjustable gear hub assembly enclosed within a housing, which assembly includes a a spur gear for driving two independent gear pumps, a gear hub and an adjusting sleeve for adjusting the position of and securing the spur gear, elastically deformable oil seal rings fitting on either side of the gear hub for ensuring a tight fit of the components within the assembly and washers fitting outwardly of the oil seal rings each equipped with a "dog" for engaging the revolving spur gear. The oil pump assembly may also be provided with coverplates, one or both of which contain improved bypass channels that serve to meter the oil in the assembly so as to prevent oil leakage, while also maintaining a supply of oil in the pump assembly so as to prevent friction build up upon starting of the sewing machine.

Abstract: A bobbin comprises a hollow hub adapted to cooperate with a latch and post on a bobbin casing housed in a sewing machine. The latch and post enter the hub and guide the bobbin into place in the sewing machine. Thread previously wound around the hub is adapted for paying out for use in the sewing machine. Before the bobbin is inserted for use in the sewing machine, a membrane is placed across the hub at one axial end to seal that end and form a reservoir within the hub, and a lubricant such as sewing machine oil is added to the reservoir. Another membrane is placed across the hub at the other axial end of the hub to seal that end and completely seal the oil within the reservoir. When the bobbin is inserted into the bobbin casing, the latch punctures both membranes, the post guides the bobbin so that it is properly seated within the bobbin casing, and the sewing machine oil contained in the reservoir drains out and lubricates the sewing machine.

Abstract: A lubrication device for a rotating hook in a sewing machine, having a hook shaft provided with a hollow interior axially thereof, an inlet and an outlet communicating with the hollow interior for prevention of oil pressure build-up therein as oil is supplied from an oil reservoir, a restriction between the inlet and the outlet for decreasing the diametrical extent of the hollow interior, and a closure for one end of the hollow interior provided with an oil supply channel communicating with the hollow interior, the oil supply channel having an axis positioned either eccentrically or concentrically of a longitudinal axis of the hook-shaft and an insert part to prevent the porous material from resting at the bottom of the interior of the hook-shaft, when the machine is stopped.

Abstract: An oil pump assembly having an adjustable gear hub assembly enclosed within a housing, which assembly includes a spur gear for driving two independent gear pumps, a gear hub and an adjusting sleeve for adjusting the position of and securing the spur gear, elastically deformable oil seal rings fitting on either side of the gear hub for ensuring a tight fit of the components within the assembly and washers fitting outwardly of the oil seal rings each equipped with a "dog" for engaging the revolving spur gear. The oil pump assembly may also be provided with coverplates, one or both of which contain improved bypass channels that serve to meter the oil in the assembly so as to prevent oil leakage, while also maintaining a supply of oil in the pump assembly so as to prevent friction build up upon starting of the sewing machine.

Abstract: An arrangement of two elements of a sewing machine which are in frictional, or sliding, contact during operation. At least one of elements is formed of a ceramic material and a minute amount of a lubrication oil is applied to the frictional, or siding, portion defining the surfaces in contact. Such a combination of elements is found in the upper looper mechanism, the shuttle body assembly, the needle bar mechanism and the fabric piece feeding mechanism in a sewing machine that are subject to high speed, high load friction or sliding conditions.

Abstract: A fully rotating hook includes an inner bobbin case, an outer loop taker mounted about the bobbin case, the loop taker having a track groove formed therein, a rotating member for rotating the loop taker such that relative rotation occurs between the loop taker and the bobbin case, and a stopper member for preventing rotation of the bobbin case with the loop taker while the loop taker is rotating. The track groove of the loop taker is formed by at least one wall therein which is coated with a layer of synthetic resin material having a small coefficient of friction to reduce friction between a track projection member on the bobbin case and the track groove of the loop taker.

Abstract: An oil elimination device for a sewing machine comprising, a needle bar, a needle bar bushing having a channel to receive the needle bar, a collector plate having a bore to receive the needle bar, and a recess adjacent to the bore. The device has a porous member received in the recess, with the porous member being in contact with the bushing and spaced from the needle bar, and a device for applying a vacuum to the porous member.

Abstract: A device to stop lubricant flow in a sewing machine comprising, a housing having a lubrication chamber, and a feed dog carrier having a part projecting out of the lubrication chamber, a feed dog in the area of stitch formation of the sewing machine, and a sliding surface of said part with a step. The device has a sealing element for the feed dog carrier, and a device for driving the feed dog carrier.

Abstract: A looper drive for a chainstitch sewing machine comprising a rigid guide stud which is part of a support member for a looper shaft. The rigid guide stud is surrounded by a bushing which is swivably mounted on the guide stud. The guide stud as well as the bushing are provided with openings through which the looper shaft extends.

Abstract: A sewing machine presser foot lubrication system which includes apparatus to directly supply a lubricating fluid to the underside of a presser foot. The apparatus includes a small lubricant flow tube attached to a forwardmost underside portion of the presser foot. By such direct attachment of the lubricant flow line to the presser foot, a more effective lubricating function between the presser foot and a work piece is achieved. The apparatus further consists of a lubricant reservoir and the appropriate valving to control the lubricant flow rate therefrom. The flow tube is in two sections wherein a flexible second portion can be quickly disconnected from a rigid first portion which is integral with the presser foot.

Abstract: A lubricating device for a revolving lock stitch shuttle of machines such as sewing and embroidering machines comprises a shuttle body which has a hub portion which surrounds its associated shuttle arbor and which lies adjacent a bearing mounting for the arbor. The hub portion is hollow and defines a lubricating oil chamber between it and the associated bearing and a gap between the shuttle hub portion and the associated bearing is bridged by a fixed ring member which is carried on a bracket which is secured to the bearing. The ring member has an opening therethrough providing an access for a nozzle tube for feeding oil from an external reservoir to the hub recess from when the oil is advanced by the centrifugal force of the rotation of the shuttle to the periphery of the shuttle.

Abstract: A fully rotating hook includes an outer member or rotary loop taker having a track groove therein and an inner shuttle member or bobbin case a projection extending into the groove. A spaced relation between the track groove and the projection is maintained by feeding compressed air into a clearance therebetween. The compressed air is fed through a plurality of air holes opening into the track groove to direct air jets to upper, lower and radially outermost surfaces of the projection on the bobbin case. Furthermore, the loop taker is rotated on a hollow shaft which has an air passage therethrough for feeding compressed air to the plurality of air holes which open into the track groove of the loop taker.

Abstract: A apparatus is provided for creating and maintaining lubricant pressure and flow to various operative mechanisms disposed within the frame of the sewing machine independent of the sewing machine operation. To aid in the lubrication process, a lubricant heater is provided. The lubricant heater operates independent of the sewing machine operation and serves to warm or heat the lubricant to a preset temperature before it is communicated to the bearing surfaces of the operative mechanisms. The invention may further include a device disposed between the lubricant pump and heater for filtering the lubricant before it is delivered to the operative mechanisms of the machine.

Abstract: A fully rotating hook includes an outer member or rotary loop taker having a track groove therein and an inner shuttle member or bobbin case a projection extending into the groove. A spaced relation between the track groove and the projection is maintained by feeding compressed air into a clearance therebetween.

Abstract: A lubricating system for sewing machines is produced with the sewing machine running by cutting a predetermined amount of cotton fibers into small lengths and blowing the fiber lengths into the sewing machine housing. As the fibers fill the housing a felt cushion conformable to the paths of motion of the parts of the mechanism is produced. The felt cushion is supplied with oil through a wick.

Abstract: A sewing machine has a housing and a mechanism in the housing for actuating the sewing elements of the machine. The mechanism includes a rotating shaft with a drive end which protrudes from the housing and carries a handwheel. The handwheel has a surface which is proximate to the housing to provide a thin space between the surface and the housing. Wheel rotation during machine operation causes centrifugal movement of air in the space toward the circumference of the space. The wheel has openings which supply air to the space to cool the wheel and prevent the aspiration of fluids from the housing by the centrifugal movement of air in the space.

Abstract: A tufting machine having a plurality of reciprocating push rods journally mounted in respective push rod housings carried by the head of the machine includes a sleeve having a sealing arrangement for preventing leakage of lubricant past the push rod housing onto the fabric produced. In one form the sleeve has a seal at the bottom, a circumferential groove disposed above the seal opening onto the push rod, and a pair of passageways communicating with the groove. Air may be blown through one passageway to pick up and carry oil from the groove back to the oil supply, or the two passageways may be connected to the inlet of an oil pump mounted in the head, or one passageway may be open to ambient while the other passageway includes a conduit which returns to the inlet of the pump. In the preferred form three seals are disposed within the sleeve vertically adjacent each other with the upper seal inverted relative to the lower two seals.

Abstract: The atmospheric pressure of lubricant containing cavities, from which leakage occurs, is lowered to a point below atmospheric pressure such that air from the environment is drawn thereinto. Since the air being drawn in occupies the passages through which lubricant leakage occurs, such leakage is effectively retarded.

Abstract: A lubrication system for eccentric drives in a sewing machine wherein lubricant is fed through a hollow drive shaft and communicative radial ports. At its outlet end, the radial port is in fluid communication with a lubricant reservoir arranged on the eccentric's periphery. The lubricant reservoir being disposed on that portion of the eccentric's periphery measuring the greatest distance from the eccentric's rotating center.

Abstract: An improved self-oiling system for the drive shaft and feed dog assembly of a portable, bag-closing sewing machine utilizes a drive shaft having an internal axial oil channel, an upper radial oil bore which extends from the oil channel to the outer periphery of the shaft to confront the lower main drive shaft bearing, and a lower radial oil passage which extends between the oil channel and the outer periphery of a feed dog eccentric cam which is integral with the lower end of the drive shaft. Oil is supplied to the lower main drive shaft bearing for further downward distribution along the bore, channel and passage to the outer periphery of the feed dog cam which is rotatably received in the feed dog block. An oil passage within the feed dog block delivers oil from the feed dog cam radial oil passage to a slide bearing within the block to lubricate the interface between a guide post and the slide bearing. Annular recesses are provided on the shaft and post to further enhance transfer of oil within the machine.

Abstract: A combined pump and oil reservoir and oil delivery apparatus directs oil to the internal chambers of a portable sewing machine where oil is distributed by pump pressure, gravity flow, capillary action, wicking, misting and movement of machine components. Oil is pumped into a manifold leading to upper and lower main drive shaft bearings and to the needle driving assembly for subsequent dispersion during rotation and reciprocation of machine parts to fling such oil outwardly within the internal chambers to oil machinery both directly and by misting.

Abstract: A needle bar bushing having a lubricant seal for reducing excess lubricant on the needle bar of a sewing machine. The lubricant seal includes a plurality of vertically aligned scraping portions including at least two similarily disposed conical scraping edges situated over a portion of the length of the needle bar bushing. The conical scraping edges being arranged in surrounding engagement with the needle bar for stripping and leading excess lubricant from the peripheral surface of the needle bar thus reducing the danger of lubricant working its way through the bushing and being thrown onto the work being sewn as a result of needle bar reciprocation.

Abstract: The present invention relates to a device for monitoring fluid flow through a pressurized lubrication system. The device includes a reciprocally arranged indicator that is responsive to fluid pressures within the lubrication system for exteriorally indicating the lubricant flow as a function of the reciprocal position of the indicator.

Abstract: An internal housing comprises an upper part 1, a lower part 3 and a middle part 2. The middle part 2 connects the internal housing to an external housing 4 to form a rotary loop taker. The external housing 4 comprises an elastic piece 6 for engaging thread as well as a tail base 42 and an internally tapered ring 5 for fitting the loop taker into a sewing machine. The middle part 2 provides a ring about which the external housing 4 is rotatable, and to facilitate this rotation, this middle part is of or coated with Teflon.

Abstract: In a sewing machine having a presser foot and a pressure imparting member for applying a downward pressure to the presser foot, there is disposed, in an inner chamber of a frame, an oil pump drivingly connected to a main shaft. The oil pump having an inlet port for drawing the oil from an oil reservoir and an outlet port for deliverying the oil under the pressure corresponding to the speed of the main shaft. Also a presser actuating device is provided between the oil pump and the presser foot and designed to apply an additional downward pressure to the presser foot by means of the oil from the outlet port so as to increase the downward pressure of the presser foot.

Abstract: A looper lubricating device for a sewing machine includes an oil line having an inlet submerged within an oil supply and a capillary member within the oil line at a spaced location from the inlet and the oil supply. An outlet of the oil line is in fluid communication with an injection nozzle and the capillary member protrudes through the outlet of the oil line into a mixing chamber within the injection nozzle. A gas conduit communicating with the mixing chamber is operative to intermittently produce a pressure gradient between the inlet and the outlet of the oil line to pass oil to the mixing chamber.

Abstract: A portable bag-closing sewing machine is provided with a self-oiling system which includes an oil reservoir connected to the machine and oil-delivery means to direct oil from the reservoir into the inner chambers of the machine where oil is distributed by gravity flow, capillary action and movement of machine components, the oil moving along through the machine components and through a series of channels, troughs, and reservoirs within the housing to distribute oil throughout the machine. During operation, the rotating and reciprocating machine parts fling oil outwardly within the chambers to directly oil machine assemblies and to create a fine mist of oil throughout the chambers so as to further lubricate machine components. Also disclosed is an improved and self-lubricating feed dog assembly and thread chain cutting device.

Abstract: A lubricant sealing element for the slide members which actuate the feed dogs in a sewing machine fabricated from a resilient wear resistant material and having lubricant scraping surfaces formed by spaced walls defining an opening conforming in size to the cross-sectional configuration of the slide members and through which the latter extend. The sealing element is mounted for sliding movement restricted to the alternate vertical movement of the slide members and the spaced walls are of a thickness approximately one third the thickness of the remainder of said element which permits them to yield first in one direction and then the other with the alternate horizontal movement of the slide members.

Abstract: This disclosure relates to a sewing machine lubrication system including positive displacement mechanisms adapted to transmit lubricant under pressure to the operating mechanisms of the machines and for transferring lubricant collected in non-drainable areas of the machine to the lubricant reservoir. Arranged in combination with the displacement mechanisms is a filtering/distribution assembly which serves to individually and selectively supply a relatively small, but sufficient quantity of lubricant to the operating mechanisms according to the requirements thereof. The present invention further provides a pressure relief valve assembly for selectively regulating the pressure in the lubrication system.

Abstract: A fully rotating hook .[.includes an outer member or rotary loop taker having a track groove therein and an inner shuttle member or bobbin case a projection extending into the groove. A spaced relation between the track groove and the projection is maintained by feeding compressed air into a clearance therebetween..]. .Iadd.assembly for a lock stitch sewing machine having an inner bobbin case for supporting a thread bobbin with a track projection extending circumferentially around the bobbin case, an outer loop taker mounted about the bobbin case and having a track groove extending circumferentially around an inner peripheral surface thereof and air passages for injecting compressed air into a clearance between adjacent surfaces of the projection and the groove. The air passages can be formed in the groove of the loop taker and in the projection.

Abstract: A combined pump and oil reservoir and oil delivery apparatus directs oil to the internal chambers of a portable sewing machine where oil is distributed by pump pressure, gravity flow, capillary action, wicking, misting and movement of machine components. Oil is pumped into a manifold leading to upper and lower main drive shaft bearings and to the needle driving assembly for subsequent dispersion during rotation and reciprocation of machine parts to fling such oil outwardly within the internal chambers to oil machinery both directly and by misting.