Abstract: A device carries first and second units in aligned end-to-end disposition at a distal end of a shaft and provides structure for moving the second of the units into position alongside the first of the units. The device comprises a base portion to which a proximal end of the shaft is fixed, the first unit being fixed to a distal end of the shaft. A rod extends lengthwise through the shaft and a portion of the first unit, and is off-set from an axis of the shaft and fixed to the second unit removed from an axis of the second unit.

Abstract: In connection with a device for retracting and advancing a thread processing element in relation to a threadline it is provided that the retracting and renewed advancing is caused solely by switching on a drive motor in a direction opposite its normal operational direction of rotation. For this purpose a drive member, which is maintained fixed against relative rotation in this direction of rotation, and another drive member which can be rotated in this direction of rotation in relation to the first by way of a drive motor, are provided, which change a rotating movement into an axial movement.

Abstract: A transmission apparatus capable of mono-direction and dual-direction power transmission. It includes a mono-direction gear engageable with the output gear, a transversely slidable platform and an alternate dual-rotation actuating assembly. The alternate dual-rotation assembly includes a link having a first end, which is pivotally affixed to a third gear via a pin spaced apart from a center axis of the third gear, and a second end which is slidable on the vertical side wall of the platform; and a roller held in a roller seat which is slidably contacted by a compression spring. The link further includes first and second sides, the first side of the link having a teeth rack which is engageable with the output gear and the second side of the link is in contact with the roller.

Abstract: A drive apparatus for reversible movements of an actuator is provided with a drive element made from a shape memory alloy with one-way effect. The drive element acts upon a lever rotatable about an axle in opposition to the force of a resetting element, wherein the lever can be used as a coupling member for converting a deformation of the drive element into a movement of the actuator. The drive element is a winding with a plurality of turns of a wire, wherein the turns are fixed and arranged mechanically parallel between an anchor point and the lever so that the lever is rotatable about the axle by means of a deformation of a turn, and the tractive force acting upon the lever by means of the drive element results from the individual forces of the turns of the winding acting mechanically parallel upon the lever. The diameter of the wire is advantageously approximately equal to the standardised diameter of the crystalline grain of the shape memory alloy in the austenitic state.

Abstract: An assembly mountable on a toolhead assembly of a machine tool for performing a work function on a shallow wall of a workpiece positioned on a worktable of the machine generally consisting of a body mountable on the toolhead assembly, having a bottom surface adapted to be positioned adjacent the work table and an elongated bore disposed adjacent the bottom surface, a spindle shaft journaled in the elongated bore, having a bevel gear disposed on an inner portion thereof and means for mounting a tool bit on an outer end portion thereof, and a drive shaft journaled in the body, mountable on a drive spindle of the toolhead assembly and having a bevel gear meshing with the first mentioned bevel gear.

Abstract: A percussion tool such as a hammer head comprises a housing for receiving a tool. A rotary drive mechanism rotates the tool about a longitudinal axis. A strike bolt is arranged for impacting against the tool. A cylinder sleeve is mounted coaxially with the longitudinal axis. A piston is slidable within the sleeve and is arranged to impact against the strike bolt. An impact drive mechanism is provided for imparting sliding movement to the piston toward the strike bolt. The impact drive mechanism comprises a wobble drive member mounted for longitudinal reciprocal movement and for rotary movement about an inclined axis disposed at an acute angle relative to the longitudinal axis. The wobble drive member is operably connected to the cylinder sleeve and to the rotary drive means to be driven thereby about the inclined axis so as to be longitudinally reciprocated. Thus, the rotary forces and impacting forces are derived from the same source.

Abstract: A rotary electric toothbrush including a power handle having a foot and a motor having a rotatable power shaft. A brush stem is attached to the power handle and extends therefrom to terminate at a stem head. A brush cartridge is attached to the stem head and extends therefrom to terminate at a toothbrush head. The brush cartridge includes at least one generally cylindrical brush oriented approximately headward-to-footward. A drive shaft extends from the power handle to the brush. A transmission transmits the motion of the power shaft to selectively cause the drive shaft alternatively to rotate about its longitudinal axis and to move parallel thereto in a reciprocating manner. A user of the rotary electric toothbrush thus may direct power from a single motor selectively to cause the brush to rotate about its longitudinal axis and, alternatively, to move in a reciprocating manner parallel thereto.

Abstract: In an electropneumatic drill or chipping hammer with an air cushion transmitting driving force of an exciter piston to a percussion piston, a clutch is provided to interengage a drive motor with the exciter piston. The clutch can be selectively engaged by an axially displacing holding sleeve which positions a tool on the front end of the drill or hammer.

Abstract: An adapter device for securement to an output rotary drive of a drill. The adapter comprises a housing having an input connector securable to the rotary drive, and an output connector. A fixed mode cam is immovably secured with respect to the housing. A displaceable floating cam is provided intermediate the input connector and a displaceable keying element. The floating cam is displaceable in and out of engagement with the input keying element. An adjusting assembly is provided to displace the keying element in and out of engagement with the fixed mode cam and the floating cam whereby the input connector can impart a rotary drive, rotary drive and impact forces or impact forces only to the output connector.

Abstract: A battery powered manicuring device is taught which uses an improved drive mechanism for reciprocating a manicuring implement. A battery energizes a motor. Extending from one end of the motor is a shaft. Interconnected with the shaft is an offset device comprising either a bearing or a sleeve positioned at a non-perpendicular angle with respect to the shaft. The lower end of an attachment arm is affixed to the outer portion of either the offset bearing or the offset sleeve. The upper end of the attachment arm is affixed to the lower end of a manicuring implement. As the shaft rotates, a reciprocating motion is imparted to the attachment arm and thus to the manicuring implement.

Abstract: A binding machine for the application of a strip of flexible material around the outline of thin articles, particularly for edging parts for boots and shoes, comprising a fork with an alternating movement for folding the strip partly above and partly below the outline of a thin article, means for causing adhesive to be placed between the said strip and the said article, and a pressure and transportation group for the intermittent pressing of the strip against the article, after the folding operation performed by said fork, and for sending said article forward as it has been edged, said pressure and transportation group comprising a hammer shaped part and an anvil shaped part mounted on a hollow shaft oscillating about its axis, which parts are caused to move the one towards the other and vice versa by a rod placed in the hollow shaft and movable in a reciprocating way.

Abstract: In a hammer drill in which both rotationally and axially directed driving force components can be transmitted to a tool held in a tool holder, a coupling member is displaceable between three axially spaced positions. In the first position the coupling member transmits rotational driving force to the tool holder, in the second position the tool holder is freely rotatable and in the third position the coupling member locks the tool holder against rotation so that only axially directed driving force can be transmitted to the tool.

Abstract: The slider by means of which the drill is changed from rotary drilling to percussion drilling is made of plastic. It is formed as a single unit with end portions to be pushed to select a first position for the rotary drilling and a second position for percussion drilling, stop portions which abut against parts of the housing to stop the movement of the slider in one or the other direction, and elongated latching elements which have cam-like projections for engaging latching recesses in the housing thereby locking the slider in the first or second position. Deformation of a ball riding in an opening of the slider and acting as thrust bearing for the spindle during rotary drilling is prevented by a bearing plate inserted in a recess in the slider in the region of the opening receiving the ball, or a stationary steel plate mounted in a part of the housing along the path travelled by the slider.

Abstract: When the hammer drill spindle and chuck are driven forward with the mode selection collar positioned to allow axial movement of the chuck and spindle, the annular ratchet is driven by the spindle through a one way roller clutch so it rides up the sloping surfaces of the fixed annular ratchet and then drops off the tooth corners to deliver a hammer blow of a magnitude determined by the operator pushing on the tool. If the rotation is reversed the clutch prevents rotation of the clutch input and prevents injury to the operator. If the selection collar is moved to lock the lugs in the detent notch of the cam surface the drill can be rotated either direction with the hammer action always locked out.

Abstract: A power hand tool including a manually engageable housing, a prime mover within the housing, a tool bit engaging chuck projecting from the housing, power transmission means within the housing and between the prime mover and the chuck; said power transmission is operable to selectively drive the chuck rotatively or reciprocally. The chuck is driven rotatively by a tube driven by the transmission and coupled with the chuck for free relative axial movement and for relative circumferential drive; the chuck is driven reciprocally by an eccentric drive means connected with the transmission and coupled with the chuck for free relative rotation and for reciprocal axial drive.

Abstract: Method for drilling a metal part driven in a rotating movement about the axis xx'. The drill is brought, besides the advancing movement along the axis xx' by a longitudinal alternating movement along the axis xx' and by a pivoting alternating movement about the axis xx'. The shavings thus formed break and are easily removed, this increasing the drilling speed. Tool-carrier for bringing the method into effect comprises a piston sliding and pivoting in a sleeve. The piston is provided with a holder bearing the drill and comprises a cavity inside which an eccentric rotates.