Abstract: A non-spill bobbin case device having a bobbin thread tension spring and a direct bobbin thread path extending from the bobbin thread tension spring across the bobbin case device spaced from the outer face of a bobbin flange supported in the bobbin case, and having a leaf spring with a first end attached thereto, the second end of which impinges upon the outer face of the bobbin flange. An indirect thread path is established by reeving the bobbin thread through a hook provided on the end of the leaf spring in engagement with the bobbin flange so that upon thread demand, the leaf spring is removed from the bobbin flange to permit free rotation thereof; but when thread demand ceases, the end of the leaf spring comes immediately into contact with the bobbin flange to deter further rotation thereof.

Abstract: A spool pin holder for accommodating deflection of a spool pin wherein a spherical segment adjacent the ends of the spool pin is seated in a socket in a spool pin post adjacent a socket of square profile having grooves extending along the diagonals of the square beyond the square so as to accommodate therein a first pair of leaf springs in a first diagonal on either side of a spool pin end and a second pair of leaf springs in the second diagonal about the spool pin end adjacent the first pair so as to provide a restoring force to the spool pin in response to any disturbing force displacing the same.

Abstract: A compact sewing machine feed system utilizing sheet metal parts to reduce inertia, and separate feed and lift cams to simplify replacement for the purpose of optimizing feed characteristics.

Abstract: A needle thread wiping device having a mounting bracket supported beneath the head behind the needle bar. The mounting bracket supports a pair of shafts which extend laterally therefrom towards both sides of the head. A thread wiper assembly may be fastened to one side or to both sides of the mounting bracket by means of a lever which may be affixed to a forwardly located shaft by a set screw. One end of the lever carries a sleeve. A link is carried on the second shaft, the link also carrying a sleeve, both sleeves slidably supporting therein a thread wiper having a hooked end. A back plate is provided having a curved slot supported on the second shaft and having a pivotal connection to the sleeve in the end of the lever. The thread wiper also has a connection to the back plate.

Abstract: A needle design and retention system in which the sewing needle is formed with a locator portion at the end of the shank that is substantially normal thereto. The locator portion may be parallel to the axis of the thread carrying eyelet and the sewing needle or may form a known angle with the plane including the needle axis and the axis of the thread carrying eyelet. The locator portion of the sewing needle extends through a transverse aperture in an enlarged end in a slabbed rod affixed to the sewing machine needle bar. The enlarged end is also grooved to accommodate a portion of the shank. A clamping sleeve is provided having an axially aligned aperture which surrounds the enlarged end of the slabbed rod and the sewing needle shank to retain the sewing needle affixed thereto. The clamping sleeve is provided with a counterbore which receives a coil spring which encircles the rod and is captured between the bottom of the needle bar and the ends of the counterbore.

Abstract: A belt guard lock for a belt guard pivotable on a pivot shaft affixed thereto and supported in a pivot frame attached to the sewing machine table, which guard lock effectively prevents pivoting of the belt guard by a sewing machine operator but may be readily defeated by a suitably authorized maintenance man. The guard lock fits about the pivot shaft affixed to the belt guard and remains therewith, so as to be available for use in any machine to which it is attached. The guard lock is implemented by a collar slidable on the pivot shaft and having a flange thereof which extends between the lower edge of the belt guard and the sewing machine table to prevent rotation of the belt guard. The belt guard lock may be rendered ineffective by loosening a special set screw inpinging on the pivot shaft and sliding along the pivot shaft to a position where the flange thereof is aligned with a slot in the belt guard to accommodate the flange during pivoting motion of the guard.

Abstract: A mechanism to facilitate selection of a standard size or shirt type buttonhole by interposing a link between the needle bar gate and driving arm and substantially parallel to the driving arm, with the connection between the driving arm and the link being movable to the selected positions based from the pivot point for the needle bar gate in order to obtain transfer of a proportion of the motion of the driving arm to the needle bar gate.

Abstract: A presser lifting arrangement for an industrial sewing machine having a knee shift device which manually elevates a presser foot to a height above the work fabric to permit free movement of the work fabric therebeneath. Further motion of the knee shift device actuates a snap action switch which operates to connect a solenoid to a source of power to elevate the presser foot to its maximum height. In a second embodiment, the knee shift device includes internal switch contacts which energize a first solenoid to raise the presser foot a distance sufficient to permit free movement therebeneath, and continued actuation of the knee shift pad actuates a snap action switch which energizes a second solenoid to raise the presser foot to its maximum height.

Abstract: An overedge sewing machine convertible from a flat bed to a cylinder bed version wherein the work supporting surface is supported by a vertical side wall and a vertical front wall with the cylinder bed protrusion projecting laterally from an extension to the vertical side wall. A needle bar reciprocates a needle into an opening in the extension of the vertical side wall and the work material is enabled to travel a path beneath the sewing needle by having a deep groove through the vertical side wall adjacent the cylinder bed protrusion behind the sewing needle, the extension being supported by a bridge connecting the vertical side wall, vertical front wall and extension. The deep groove behind the cylinder bed protrusion merges into a shallow groove beneath the cylinder bed protrusion where the material is able to undergo some deformation without effecting the stitching point.

Abstract: A dovetail fixture for guiding a cutting tool in cutting mortises and tenons is described which can be simply used in cutting mortises and tenons at either of two selectable pitches. The fixture includes a base equipped with a horizontal table or work receiving surface and a vertical apron or work receiving surface. The surfaces are adapted to support work pieces in orthogonal positions with the end of a horizontal work piece in abutting relation with the end of a vertical work piece. Also included is a first clamping means adapted to clamp the horizontal work piece against the horizontal work receiving surface and a second clamping means adapted to clamp the vertical work piece against the vertical work receiving surface in their abutting positions. A cutter guiding template is employed having one of its edges formed with a first series of alternating guide fingers and slots and having a second, opposite edge formed with a second series of alternating guide fingers and slots.

Abstract: A dovetail fixture for guiding a cutting tool in cutting mortises and tenons is described which can be simply used in cutting mortises and tenons. The fixture includes a molded base equipped with a horizontal table or work receiving surface and a sloped apron carrying spaced apart bosses defining a vertical work receiving surface. The surfaces are adapted to support work pieces in orthogonal positions with the end of a horizontal work piece in abutting relation with the end of a vertical work piece. Also included is a first clamping means adapted to clamp the horizontal work piece against the horizontal work receiving surface and a second clamping means adapted to clamp vertical work piece against the vertical work receiving surface in their abutting positions. A cutter guiding template is employed having at least one of its edges formed with a series of alternating guide fingers and slots.

Abstract: A stationary or bench mounted belt sander is described constructed of a die cast bed or frame rotatably supporting a drive roll or pulley at one end thereof and provided at the other end portion thereof with generally longitudinal ways for slidably supporting a pair of generally parallel spaced apart outwardly extending generally elongated U-shaped stamped metal yoke or support bracket members provided at their inner or proximal end portions with camming surfaces. The distal ends of the yokes carry pins generally perpendicular thereto supporting a shaft for an idler roll or pulley.

Abstract: Stitch length stops for an industrial sewing machine which is implemented by a stop member having a slot therethrough and a finger projecting therefrom, which slot is clamped behind a sheet metal bracket that may be affixed to a sewing machine frame. The sheet metal bracket is fashioned with an aperture through which a screw may extend through the slot of the stop member and into a bracket having a threaded aperture so that the stop member may be compressed between the bracket and sheet metal member. The sheet metal member may be implemented by a belt guard.

Abstract: Home or residential cleaning apparatus of the hot water or steam extraction type comprising a hot solution tank, a pump for pumping the hot cleaning solution to an applicator nozzle, a wet pick-up vacuum for extracting soiled cleaning solution, an electrical resistance heater of relatively low wattage at the bottom of the solution tank, a thermostat thermally coupled to the heater in series electrical connection therewith set to open at a temperature slightly above the boiling point of the cleaning solution to function as a safety device and also in series with the solution pump, and a signal device provided in parallel with the thermostat.

Abstract: A horizontal axis loop taker is actuated by a loop taker shaft supported in an eccentric opening in a rotatable bearing located immediately adjacent the loop taker. In a first position of the rotatable bearing, a sewing needle may extend through an orifice in a throat plate to cooperate with the loop taker in the formation of stitches. In a second position of the rotatable bearing achieved by rotating the bearing in a direction to locate the eccentric opening, and thereby the loop taker, further from the throat plate, the sewing needle will not cooperate with the loop taker. The increased clearance thus provided between the loop taker and throat plate will more readily accommodate thread severing devices.

Abstract: A portable electric drill is provided with a keyless slidable jaw chuck having three slidable jaws provided with externally extending teeth mounted within a chuck body having three slideways for the chuck jaws and a traverse nut rotatable on the chuck body having internal threads engaged with the chuck jaws, and a locking shell slidable relative to the traverse nut so as to rotate together relative the chuck body. Teeth, lugs or other projections on the rearward annular face of the shell selectively matingly cooperate with teeth, lugs or similar projections provided on the drill housing so that, when the shell is slid rearwardly towards the drill housing the shell and traverse nut are held against rotation relative the drill housing upon actuation of the drill to rotate the chuck body, the chuck jaws will be automatically extended or retracted, depending upon the drill rotation direction, to chuck or unchuck a drill bit or other accessory inserted therebetween.

Abstract: A light sensing device for a sewing machine with a sensing circuit which automatically compensates for the work fabric being utilized so as to be able to detect a ply change event in any fabric without requiring an operator adjustment for the type of fabric being stitched upon. Being able to detect a ply change event without the necessity for adjustment also permits automatic operation of certain sewing machine components, further facilitating operation of the sewing machine.

Abstract: A suction cleaner having a chassis including a suction nozzle inlet at the bottom thereof and first and second sets of wheels supporting such chassis for movement on a floor surface is provided with a nozzle height adjusting mechanism comprising first axle means carried by said chassis for rotatably supporting said first set of wheels, second axle means including a central portion having a pintle shaft mounted therewith and with the chassis for enabling rocking movement of said axle means relative said chassis, an actuating portion on one side of said pintle shaft, and a pair of offset arms formed on an opposite side of said pintle shaft extending laterally outwardly thereof for journaling said second set of wheels, said offset arms being longitudinally spaced from said first axle means, an adjustment lever journaled on said chassis having one end portion angulated to engage said actuating portion so that rocking movement of said adjustment lever rocks said second axle means about said pintle shaft and thereb

Abstract: A motor operated circular miter chop saw is pivotally mounted on a generally horizontal axle pivot pin about which it rotates in a vertical plane with the axle pivot pin being carried by a cast support base structure provided with means allowing both lateral adjustment and vertical adjustment of each end of the axle pivot pin. Angular orientation of the work piece is provided by an angularly adjustable fence rotatably carried by the cast base.