Abstract: The invention pertains to a trimming device with a motor-driven cutting tool that is rotatable about a shaft and with a shell-like reel protector (100), wherein said trimming device can be operated with different cutting tools. In order to achieve a simple adaptation of the reel protector to the respective tool used, the invention proposes that the reel protector (100) includes a first shell (10) that is rigidly connected to the trimming device and a second shell (11) that can be displaced relative to the first shell (10) in the direction (A) of the shaft of the cutting tool.

Abstract: A universal saw capable of being employed as a jigsaw or sabre saw, having a housing containing a drive train that includes an electric drive motor and a motion converter that converts the rotary motion of the drive motor into a reciprocating working motion of the saw blade movably guided in the housing, and having a wear-resistant base plate for supporting the universal saw on the work piece to be machined can be adapted with particular ease to the optimally desired intended use as a jigsaw or as a sabre saw in that on the one hand, the base plate (21) can be rigidly locked in a definite, first operating position in relation to the housing of the universal saw (10) in which position, the direction of the working movement of the saw blade (14, 15) is perpendicular to the plane of the base plate (21) and on the other hand, outside of this operating position, the base plate (21) can be variably adjusted in its angular position in relation to the direction of the working movement.

Abstract: A cloth cutting machine having a base mounted on at one end of an upright standard, and a motor mounted on the other end of that standard. A cloth cutting knife is connected to the standard, and is driven by the motor. A handle connected to the machine is manually gripped by the machine's operator to guide it during use. An air handler device connected to the machine is structured, in preferred form, to direct cooling air against the machine operator's hand which manually grips the handle. Also in preferred form, the cooling device includes a cooling air distribution manifold defined in the standard, that manifold having a hand air port at one end oriented to direct cooling air toward the handle, and a base air port at the other end which exhausts cooling air substantially rearwardly from the standard relative to the cutting direction of the machine so as to cool the standard.

Abstract: The present invention relates to a cutting machine the blade of which is controlled to slide up and down for cutting a stack of cloth by means of an induction produced through the contact of an inductive handle of the machine with an operator's hand. The sensitive contact and induction control manner permits an operator to easily, safely and efficiently start, stop, and resume the sliding movement of the blade without the need to repeatedly switch on or off the cutting machine.

Abstract: A cutting apparatus comprising a cutting blade arranged along a pole pendent from a motor portion, a press rod having a cloth press attached to the lower end thereof, which is vertically movably arranged at a front part of the cutting blade, and a brake disposed to confront the press rod for controlling the vertical movement of the press rod, wherein a guard covering the cutting blade is attached to the press rod, a handle is provided with a lever to be actuated when the handle is gripped, a switch of the motor portion to be actuated by the operation of the lever is connected to open and close the brake, and a power source is separately arranged.

Abstract: Powered coping saw systems and corresponding methods of cutting workpieces with powered coping saws are provided by this invention, which holds a workpiece stationary and moves the reciprocating saw blade relative to the workpiece. By disposing the workpiece in different planes and at different angular orientation, two dimensional and three dimensional cuts may be made. The saw motor is in a frame pivotable about a base, and drives a reciprocating saw blade holding second frame pivoted in turn on the first frame to move the powered saw blade over a two dimensional cutting range generally perpendicular to the saw blade. Relative positioning of a workpiece, such as a longitudinally disposed contoured molding strip which is to be cut for matching corner mounts, for angular positioning with respect to the saw blade permits two dimensional and three dimensional cutting patterns to be followed in the workpiece.

Abstract: A cutting machine for fabrics, comprising a table, a carriage reciprocating along the same, a pivoted cantilever extending above the table and having an inner arm pivotably mounted about a vertical axis on the carriage and an outer arm articulated on the inner arm, a hand cutter being pivotable about a vertical axis on the outer arm, further comprising switching means for the carriage drive and for controlling the direction of travel of the carriage, a first switching means being provided which is controlled by both arms in order to limit the deviations of the angle formed by the two cantilever arms from an angle of 90.degree., a second switching means controlled by the inner cantilever arm also being provided to limit the deviations of the angle formed by the inner cantilever arm and the direction of travel of the carriage from an angle of 90.degree..

Abstract: A cutting machine comprising a housing having a base, a motor carried by the housing, a knife blade having a cutting edge and carried by the housing for reciprocal motion generally normal to the base in response to operation of the motor, a presser foot movably carried by the housing located in spaced relation to the blade cutting edge and movable toward and away from the base, and characterized by an elongated guard connected to the presser foot and located closely adjacent the blade edge and guided supported in the housing for movement along the blade edge in response to movement of the presser foot toward and away from the base. There is included an arrangement for releasing the presser foot when the motor is turned off allowing the pressure foot to rest on or near the base and maintain the guard in place along the blade edge when the motor is off.

Abstract: A safety device is provided for a cloth cutting machine having a motor driven cutting blade and a presser foot rod. The safety device (10) includes a housing (30) which in one embodiment serves as a magnetic concentrator. This housing (30) carries an electromagnet (40) which selectively activates a stopping mechanism (60) which secures the presser foot rod (16) at a selected location while the machine (12) is in operation. Upon termination of the cutting operation, the safety device (10) releases the presser foot rod (16) and allows the rod to slide under the force of gravity to its extended position such that the cutting blade (22) is shielded. In the preferred embodiment, a control circuit is provided for selectively energizing and de-energizing the electromagnet (40) which operates the stopping mechanism (60). This control mechanism releases the presser foot rod (16) upon termination of the machine operation.

Abstract: A manually controllable machine for cutting out or notching fabric has a supporting foot (2) for supporting the machine on a cutting table (). The foot (2) has a flat face (15) on which the machine rests. To reduce the effort required to displace the machine, at least one opening (25) of at least one channel (16 to 21) is provided in the face (15), the channel (16 to 21) being connected to a source of compressed air.

Abstract: The disclosure describes a cutting machine for flat material, such as fabrics, sheeting and the like, with a compressed-air-cooled trivot, a trivot drive which is supported on a foot plate by means of a support such as a column, two blade guides having the shape of flat strips being disposed at the support, said blade guides delimiting a gap in which is guided the trivot, which oscillates parallel to the longitudinal direction of the support, a cooling channel extending in the support approximately parallel to the trivot and running more or less the length of the support, a compressed-air-operated vortex tube connected to the cooling channel, and a means for introducing cooling air into the cooling channel for cooling the trivot, blade guides, and support.

Abstract: A machine for cutting out flat material comprising a support for the flat material, a carriage guided for displacement along the support by at least one guide rail, the carriage bearing a beam extending above the support and pivotable, in relation to the carriage, about an at least approximately vertical, first pivot axis, this beam having at least two arms interconnected by a joint having a second pivot axis parallel to the first pivot axis and the outer arm of said two arms bearing a cutting mechanism pivotable, in relation to the outer beam arm, about a third pivot axis parallel to the first pivot axis and a foot of the cutting mechanism being in contact with the support during operation. In order to simplify the construction of the beam but still ensure that the cutting mechanism always rests perpendicularly on the support, this cutting mechanism is adapted to swivel, in relation to the support, about a tilt axis parallel to the support and rests with its foot on this support.

Abstract: Apparatus for supporting and guiding a machine for operating on sheet material such as cloth while the material lies on a surface of a supporting structure having a pair of substantially parallel sides extending lengthwise of the structure, the apparatus comprising a carriage adapted for movement lengthwise of the supporting structure along a path substantially parallel to the sides, a guide arm on the carriage extending across the supporting surface between the sides and spaced from the surface, and a support arm connected to the guide arm extending at an angle thereto and located in spaced relation to the supporting surface, the support arm carrying at one end a machine for operating on the sheet material, and the support arm being pivotally movable about an axis substantially parallel to the longitudinal axis of the guide arm and along a plane disposed substantially perpendicular to the supporting surface.

Abstract: An improved cutting machine including a thin, elongated cutting blade and a guide block with an opening which is shaped to conform to the cross-sectional shape of the elongated cutting blade. The guide block with the defined opening both guides the elongated cutting blade and maintains it clean.

Abstract: An apparatus for cutting sheet material spread in one or more layers over a supporting surface uses a reciprocating cutting blade cutter movable in two coordinate directions in the plane of the supporting surface to enable the cutting blade to follow a desired line of cut relative to the sheet material. The cutting blade has a leading cutting edge that performs the actual cutting operation with a slicing action. During the cutting operation, mechanical means within the apparatus produces blade dither about the axis of reciprocation in synchronism with the reciprocation strokes of the blade.

Abstract: Protection device adapted for use with a vertical blade cutter comprising a cutting blade. The device comprises a moveable plate for covering the blade and protecting against accidental contact with the blade. The moveable plate is adapted to be retracted during cutting and is further adapted to be otherwise lowered in front of the blade. A bar is provided which is adapted to slide in a guide adapted to be attached to the cutter. The moveable plate is mounted on the bar. A plate support is journaled onto the guide. A rotatable wheel is attached to the plate support. The rotatable wheel, when brought into contact with the bar while rotating, is adapted to raise the bar and moveable plate and whereas disengagement of the wheel from the bar causes the moveable plate to be lowered in front of the blade by virtue of its own weight and that of the plate.

Abstract: A toolholder assembly incorporated in a portable power tool having a housing and a drive disposed therein. The assembly includes a toolholder body, a first releasable securing arrangement for attaching the toolholder body to the drive for oscillating the toolholder body in a longitudinal direction; a second releasable securing arrangement at the front end of the toolholder body for attaching a tool bit to the toolholder body, longitudinal guide faces provided on the toolholder body between the two releasable securing arrangements and a bearing member mounted in the housing and provided with longitudinal counterguide faces which slidably cooperate with the longitudinal guide faces of the toolholder body for taking up forces transverse to the direction of the longitudinal oscillation of the toolholder body.

Abstract: In a cutting machine of the type having a vertically reciprocating cutting blade, an internal grinder and a presser foot on a carrier bar, a lifting device responsive to operation of an actuating member for stopwise lifting the carrier bar to permit true one-hand operation and to avoid possible injury to an operator placing his hand on the presser foot in the region of the reciprocating cutter blade.

Abstract: A cutting apparatus for cutting a strip of tape connected to a shoe upper component and extending beyond the edges thereof includes a blade for cutting the tape and presser feet for tensioning the tape during cutting. The blade and presser feet are independently actuated by plungers, which are slidable in a casing mounted on the sewing machine used to sew the tape onto the upper component. The plungers are provided with magnetic cores, and separate coils around the cores are energized in response to signals from photosensors in the work surface of the sewing machine to effect tensioning of the tape, followed by cutting at the edge of the upper component. Springs in the casing around the plungers return the plungers to a rest position, and the tape tensioning and cutting operations are repeated at each component edge.

Abstract: The invention relates to a cloth-cutting machine with a sword-knife, provided with a band sharpening device, an elastic hold-down and all the parts being in contact with the cloth sheet to be cut are coated with an anti-friction polytetrafluorethylene coating. The machine is driven by an electromotor and can be characterized in that in the sharpening head band tensioning arms are arranged, on said arms changeable heads are mounted, furthermore the machine is provided with a control spindle performing regulation by means of a tension spring and a nut bolt. The rod pressing the cloth in an elastic manner is provided with the toothed retaining member, the casing leading the same, with the spring built into said casing, with a retaining lever, a further spring and with an arm for the release of the retaining member.The machine according to the invention ensures excellent quality of the cloth-sheet cut, economical operation of the machine and reduced display of physical strength.

Abstract: A saw for cutting off plaster casts and the like. A single freely reciprocal sawblade is driven by a motor for providing cutting of a cast of the like. A flat guiding plate is disposed in the same vertical plane as the sawblade, and is spaced from the rear of the blade, a lower anvil is provided for engagement with the bottom surface of a cast being cut and for guiding the reciprocatory motion of the sawblade, and a spring-pressed gliding plate is disposed generally forwardly of the blade and engages the upper surface of a cast being cut. The gliding plate and anvil overlap over a substantial length thereof, and firmly hold the cast in place during cutting.