Abstract: Upon a kick-back of a motor saw, energy is transferred from the rotating parts of the engine into energy which generates the kick-back. This causes a tremendous decrease of the r.p.m. of the engine. In the saw there is an electronic control comprising a timer which measures the r.p.m. of the engine. During certain intervals the difference in r.p.m. is computed with respect to previous intervals and if the r.p.m. has decreased more than a predetermined value, a sensor in the electronic control emits a signal which releases an electrically controlled chain brake for stopping the chain.

Abstract: An electro-mechanical brake in a motor saw requires electric energy for the operation of the brake. This energy can, according to the invention, be surplus energy in the ignition system of the saw. Surplus energy exists usually only when the r.p.m. exceeds a certain value. A capacitor is charged by current from the system and is prepared to discharge through a coil to actuate the brake on a signal from a kickback sensor.

Abstract: An electronic sewing machine has an input selector for the adjustment of input data to the machine. As a complement to the pattern selecting buttons, a cloth meter is provided and positioned at or on the machine. The button and meter provide data of a specific seam selection to the electronic systems on the machine. The cloth meter is used for making a selection of a seam from a series of seams which can be selected by the buttons. When the operator pushes a button, signals are composed to a seam selection code which is fed to a start address memory.

Abstract: A method of washing textile objects comprises pre-washing in a liquid composed of an organic dissolvent, preferably perchloroethylene, main washing in a liquid composed of a mixture of the organic dissolvent, a tenside and water, and at least two subsequent rinsing period, the objects being spin dried after each washing or rinsing period. The main-washing liquid is composed of a microemulsion whose water contents amount to between 4 and 30, preferably 10-30, percentage by weight and the first rinsing is made in a liquid composed of the organic dissolvent to which tenside has been added. A device for performing the method comprises three receptacles (11, 26, 32) for storing microemulsion, perchloroethylene, and used rinsing liquid from the first and preferably also from the second rinsing, respectively. The three receptacles communicate with a container (10) for the objects to be washed, which container can be supplied with tenside and water, respectively, from a dosing device (56).

Abstract: A device for setting a numeric display (11) comprises a continuously turnable potentiometer (12) by which the setting area can be repeatedly passed through by turning in the same direction. The potentiometer and the display are connected to a computer (10), preferably a microcomputer. The computer is arranged to repeatedly sense the instantaneous resistance value of the potentiometer or a parameter representing said value. Further, the computer is arranged to store the first one (T.sub.1 high) of a series of measurement values and for each subsequent measurement value (T.sub.2 high) in the series to determine if the difference between the present and the first measurement value exceeds a reference value (T.sub.diff), in which case the display (11) is operated to increase or decrease its value by one step of a predetermined magnitude.

Abstract: An electric vacuum cleaner has a floor engaging unit, a generally vertically extending handle assembly pivotally affixed to the rear of the floor engaging unit, and a porous bag assembly mounted to the front of the handle assembly. The handle assembly is hollow to direct dust-laden air from the floor engaging unit to the bag assembly. A bottom plate, under the brush roll, has notches at its edges to enhance edge cleaning, and front wheels for the cleaner. Ridges are provided in the floor engaging unit to prevent improper assembly of the drive belt. The handle assembly is resiliently biased upwardly, and a release is provided thereon to enable relaxation of forces on the porous bag of the porous bag assembly, to facilitate changing of the bag.

Abstract: A capacitor ignition system of magnet type comprises a charging winding (10), a trigger winding (11), an ignition coil (13) and an ignition switch (14) with electronic control means, in this case a micro-processor (16). For practical, economical reasons the voltage of the charging winding cannot be used for current supply to the electronic control means as this voltage is several hundred volts. In the trigger winding the chosen voltage can be a few volts which is a proper voltage for the control means. The trigger winding of the invention has double functions: to generate a reference voltage for spark release (triggering) and to be an energy source for the electronic control means.

Abstract: A hand starter for an internal combustion engine having an axially displaceable clutch member journalled on a clutch shaft, for co-acting with a fixed clutch member on the engine shaft. The axial movement of the displaceable clutch member, caused by pulling a start rope, is guided by a helical spring wound in a helical groove on the clutch shaft. The outer periphery of the spring is resiliently pressed against friction producing threads of a cylindrical bearing surface of the displaceable clutch member, to exert an axial force against the axially displaceable clutch member.

Abstract: A wall anchor or support comprising a support end portion and a shank portion, a plurality of spaced triangular shaped members affixed to the shank and capable of limited pivotal movement when the shank is inserted in an opening in a wall structure and when force is applied to the anchor in a direction away from the wall structure. The plurality of spaced triangular shaped members have a curved surface and two straight side surfaces with the side surfaces being connected together at adjacent ends forming a joint and the curved surface frictionally gripping an interior surface of the opening when the force applied to the wall anchor in a direction away from the wall is applied, thereby preventing the wall anchor from being dislodged from the wall structure.

Abstract: In engine-powered machines (motor cutting saw, motor chain saw) with a centrifugal clutch a wearing on the clutch and belt takes place by a high load at an r.p.m. around or above the skidding r.p.m. of the centrifugal clutch. A step for reducing the said wearing can--according to the invention--be taken by limiting the driving torque of the engine in the above-said r.p.m. interval. The invention means that the cutting machine/motor saw is provided with electronic equipment counting r.p.m. and then controlling the ignition system so that the torque of the engine is lowered in a predetermined interval. In a cutting machine ignition is allowed in, for example, every third revolution within the interval 3000-6000 r.p.m. The working mode can also be widened so that the time difference between several revolutions is detected.

Abstract: An artistic display is formed of a first layer of a material between a base and a transparent cover layer. The cover layer and base may be of a flexible plastic material, or they may be of a rigid material, such as glass. The first layer has a putty like consistency, and is formed with different color pigments in different areas of the layer.

Abstract: In known vacuum cleaners a filter bag is arranged as a dust collector in the suction chamber through which the dust laden air stream is led. Although the major part of the dust particles are collected in the filter bag, the air stream leaving the apparatus contains a considerable portion of fine dust particles which spread in the premise being cleaned. To retain inside the vacuum cleaner also the dust particles contained in the exhaust air this air is cleaned by a filter (18) which is integrated with the filter bag (15). Exchange of a filled filter bag means that automatically also the exhaust air filter will be exchanged. Thus, there will be no decrease of the suction effect due to clogging of the exhaust air filter.

Abstract: An electric vacuum cleaner has a floor engaging unit, a generally vertically extending handle assembly pivotally affixed to the rear of the floor engaging unit, and a porous bag assembly mounted to the front of the handle assembly. The handle assembly is hollow to direct dust-laden air from the floor engaging unit to the bag assembly. A bottom plate, under the brush roll, has notches at its edges to enhance edge cleaning, and front wheels for the cleaner. Ridges are provided in the floor engaging unit to prevent improper assembly of the drive belt. The handle assembly is resiliently biased upwardly, and a release is provided thereon to enable relaxation of forces on the porous bag of the porous bag assembly, to facilitate changing of the bag.

Abstract: A device for locking a beam to an upright column. The beam is provided with hooks adapted to be inserted into holes in the upright column and to be locked by a member which is a part of a spring-activated lock device. The lock device can be extracted and moved to a position in which a first stop surface of the device rests on the outside of the beam below the hole. When the lock device is moved to a position such that a second stop surface of the lock device upon insertion of the beam into an upright moves the member to a locking position of the beam to the column.

Abstract: A strain relief for a power cord for electric devices includes a molded insulating body into which the power cord extends, a grounding lug extending from another side of the body and connected to the ground lead of the power cord. Grooves are provided in the sides of the body to enable the body to be assembled in a slot of the electric device, with the grounding lug of the strain relief adjacent a wall of the electric device, so that the grounding lug may be held to the wall of the device by a screw. The grounding lug may be used to function as a strain relief or auxiliary metal may be provided as a retainer. Connectors extending from the device on the portion opposite the grounding lug are adapted to be connected to leads within the electric device, the connectors being, for example, spade lugs. A fault sensing device such as an automotive fuse may be coupled to additional connectors on the body.

Abstract: The invention relates to panels, such as are provided in cabinets or the like. Rabbets are provided in a frame for receiving a panel. Mortises are provided extending in the frame from the rabbets, and rotatable retaining elements are mounted in the mortises. The rotatable retainers are comprised of a ramp encircling them for a portion of their circumference, having one flat circumferential side that is alignable with the side of the rabbet in the frame. Accordingly, upon rotation of the retainer, the ramp, or screw thread, engages the side of the panel away from the bottom of the rabbet, to hold the panel fully against the bottom of the rabbet, independently of the thickness of the panel.

Abstract: The invention relates to a device in a vacuum transportation system for liquids, preferably a vacuum sewage system, comprising a transportation conduit (12) which is under vacuum and via a normally closed valve (13) and a suction pipe (14) connected to a liquid collecting container (10). The closing movement for the valve (13) is activated by the change in pressure which occurs when air entering after the liquid flows into the system.

Abstract: An electric rotating device, such as a commutator motor is provided with a stator supporting two terminal blocks of electrically insulating material. The terminal blocks are provided with a series of grooves in which wire ends of the stator windings are inserted. At least one of the grooves has an entrance part in the form of a slit and being defined by a resilient tongue having rounded edges. The tongue and the adjacent winding form a V-shaped entrance opening leading to the entrance part of the groove. The wire ends of the windings are guided by the grooves to terminal pins to which they are connected.