Abstract: The combination of a cylinder lock and key, wherein the key comprises a blade with a longitudinally extending edge portion at one side of the blade provided with a coded surface for engaging the ends of a row of locking pins in the cylinder core of the lock. The coded surface has code portions which engage a segment of the end of each pin spaced from the center thereof, and transition portions for guiding the pins between adjacent code portions and which are of concavely curved cross-sectional shape to provide for arcuate engagement with the pins, the code portions and transition portions of the coded surface being open to the side of the key blade and spaced from the other side thereof. The coded surface is produced by moving a rotary cutting tool relative to the key blank with substantially the same movement as the pins undergo relative to the key as the latter is inserted into and removed from the cylinder of the lock.

Abstract: A cylinder lock with a cylinder core rotatable in a housing, a side bar in a recess extending axially in a peripheral part of the cylinder core and biassed outwardly to engage a recess in the housing which is shaped to retract the side bar upon turning the cylinder core, the side bar having a number of lugs which must engage in waisted portions of locking pins of a row thereof guided in bores in the cylinder core to permit retraction of the side bar. The waisted portions of the pins are identically positioned with respect to ends thereof, and the lugs are differently positioned on the side bar, the side bar having guide portions which extend between the locking pins when the side bar is retracted and which engage guide surfaces to resist any tendency for the side bar to become misaligned or jammed.

Abstract: The combination of a cylinder lock and key, wherein the key comprises a blade with a longitudinally extending edge portion at one side of the blade provided with a coded surface for engaging the ends of a row of locking pins in the cylinder core of the lock. The coded surface has code portions which engage a segment of the end of each pin spaced from the center thereof, and transition portions for guiding the pins between adjacent code portions and which are of concavely curved cross-sectional shape to provide for arcuate engagement with the pins, the code portions and transition portions of the coded surface being open to the side of the key blade and spaced from the other side thereof. The coded surface is produced by moving a rotary cutting tool relative to the key blank with substantially the same movement as the pins undergo relative to the key as the latter is inserted into and removed from the cylinder of the lock.

Abstract: A lock follower, particularly a handle or pressure follower, comprises a hub part consisting of a machined rod-like or tubular material and an arm part consisting of a punched sheet-metal material. The parts are rigidly joined together by flow of material from the arm part to a peripheral groove in the hub part. Preferably the hub part exhibits in the neighborhood of the groove a portion of smaller diameter than the main portion of the hub but of larger diameter than the hole for the hub part in the arm part. Said portion is pressed so far into the hole in the arm part while deforming the material defining the hole that the arm part abuts an abutment in the hub part. Further, the portion of the hub located between the peripheral groove and the abutment preferably has axially extending ridges around the periphery thereof to facilitate flow of material and rigidly securing the two parts together in both axial and circumferential direction.

Abstract: A lock plate (2) is secured to a door (1) or the like, by means of two upper and two lower securing means (4,5). A recess formed in one side edge (1b) of the door is arranged to accommodate a lock housing (10) having a lock pillar (12) which covers the recess. The lock pillar (12) is secured by an upper and a lower screw (6) which simultaneously serve as anchoring elements to lock the plate securing means against rotation. Each of the securing means comprises a screw-thread (5) provided with an opening or recess (5d) and co-operating with a screw element (4) which is non-rotatably received in a hole in the plate (2). Each of the anchoring screws (6) is passed through two screw-threaded sleeves (5) provided with recesses and located on mutually the same level. The anchoring screws (6) co-act with two sleeve parts (7,8) which partially surround said screws, of which sleeve parts one (7) is screw-threaded for engagement with the screw thread.

Abstract: A lock follower comprises two main parts, i.e. a central part and a cylindrical bearing part which are attached to each other. The central part is punched from a sheet-metal blank. The cylindrical bearing part partially surrounds the central part and has a slot through which a portion of the central part projects. The bearing part may comprise a piece of tubular material or alternatively a strip of material wound to cylindrical shape on a portion of the periphery of the central part. The two parts may be joined together by welding or by deformation of material belonging to either or both parts.The invention also concerns a method of manufacturing a lock follower of the above-mentioned kind, whereby for the cylindrical bearing part initially either a tubular piece of material or a piece of strip material is used.

Abstract: A lock follower, particularly a handle or pressure follower, comprises a hub part consisting of a machined rod-like or tubular material and an arm part consisting of a punched sheet-metal material. The parts are rigidly joined together by flow of material from the arm part to a peripheral groove in the hub part. Preferably the hub part exhibits in the neighborhood of the groove a portion of smaller diameter than the main portion of the hub but of larger diameter than the hole for the hub part in the arm part. Said portion is pressed so far into the hole in the arm part while deforming the material defining the hole that the arm part abuts an abutment in the hub part. Further, the portion of the hub located between the peripheral groove and the abutment preferably has axially extending ridges around the periphery thereof to facilitate flow of material and rigidly securing the two parts together in both axial and circumferential direction.

Abstract: A lock follower comprises two main parts, i.e. a central part and a cylindrical bearing part which are attached to each other. The central part is punched from a sheet-metal blank. The cylindrical bearing part partially surrounds the central part and has a slot through which a portion of the central part projects. The bearing part may comprise a piece of tubular material or alternatively a strip of material wound to cylindrical shape on a portion of the periphery of the central part. The two parts may be joined together by welding or by deformation of material belonging to either or both parts.The invention also concerns a method of manufacturing a lock follower of the above-mentioned kind, whereby for the cylindrical bearing part initially either a tubular piece of material or a piece of strip material is used.