Abstract:
A lock device includes a housing and a removable cylinder. The cylinder is retained in the housing by a retainer spring attached to the housing and engageable with channels defined in the cylinder. A tool may be inserted through slots in the housing to engage and displace the retainer spring for removal of the cylinder. The cylinder may thus be removed from the housing and altered, repaired or replaced.
Abstract:
A novel flush mounted handle, latch bolt and housing assembly formed of a suitable plastic material such as nylon and comprising a housing conformably received and frictionally retained in an opening in a door, drawer or other closure such as intended for recreational vehicles or the like, and a combined handle and latch bolt, these two components being readily assembled when snapped together and provide a positive and secure assembly. The novel latch bolt has a flexible tab coacting with the housing to provide spring pressure to bias the latch bolt to latching position, and a key-operated locking means in the housing for retaining the latch bolt in locked position.
Abstract:
A broken tool detector utilized to check for the presence of any protrusion on the face of a tool, such as the second blow punch on a two blow header or similar machine, where the detector includes a probe which travels with the ram and is mounted on the ram on which the punches are mounted. The probe is positioned so that the second punch passes it as the punch is moved between its inactive and active punching positions. The probe is isolated electrically from the machine and wired to a low voltage circuit connected to the drive motor starter circuit by isolated detector relay contacts. Each time the probe contacts the end of the punch, a capacitor charge is restored which supplies energy to maintain the detector relay contacts. If the punch is broken or worn and fails to make contact with the probe, the capacitor discharges and the detector relay drops out, stopping the machine.
Abstract:
A lock assembly for the door of a cabinet or other enclosure which will eject the actuating key for the lock in either the locked or unlocked position or in any radial position if the key is released and includes a lock cylinder housing a stationary bushing, a reciprocable spring-biased stripper, a reciprocable and rotatable driver, and a rotatable plug. Insertion of a proper key depresses the stripper and reciprocates the driver from a first position in engagement with the bushing to a second position in engagement with the plug, thus freeing the driver from the bushing for rotation with the plug within the cylinder and relative to the bushing. The stripper will eject the key in any position of rotation of the driver.
Abstract:
A self-extruding screw used for thin gage sheet metal to provide increased holding power, with the screw having an enlarged head, a threaded shank and a generally tapered thread-free point with a flattened side parallel the screw axis extending from adjacent the base of the conical tip to a point short of the threaded shank. An angular groove is formed in the tapered point to extend therearound, partially interrupted by the flattened surface, from adjacent the conical tip to and merging into the threads of the shank.
Abstract:
A pin tumbler lock having a cylindrical lock housing receiving a rotatable plug shaft with a front barrel and a rear barrel secured thereon, a center barrel secured in the lock housing and an index ring stationarily mounted in the lock housing and encompassing the front barrel. The front, center and rear barrels have a plurality of axially extending passages receiving tumblers, change tumblers and locking pins. The index ring includes a pair of oppositely disposed radial openings normally aligned with radial openings in the front barrel and receiving a pair of inwardly biased retaining pins having rounded inner ends cooperating with depressions in the surface of the key. Rearwardly of the retaining pins is a second pair of radial openings in the index ring normally aligned with radial openings in the front barrel to receive inwardly biased drivers and antitorque pins also cooperating with the exterior surface of the key. The plug shaft within the front barrel is provided with a plurality of circumferentially equally spaced longitudinal ribs which cooperate with longitudinal grooves on the interior surface of the key so that rotation of the key provides simultaneous rotation of the plug shaft as well as the front and rear barrels and a lock bolt on the rear end of the shaft if the retaining pins, antitorque tumblers and axial pin tumblers are properly oriented by the key.
Abstract:
A COMBINATION LATCH AND LOCKING MECHANISM FOR SMALL CONTAINERS HAVING A SLIDABLE DOOR OR COVER FORMING ONE SIDE OF THE CONTAINER, INCLUDING TWO OR MORE SLIDABLE LATCHING BUTTONS, EACH BUTTON HAVING SEVERAL PREDETERMINED POSITIONS AND PROVIDED WITH A LOCKING FINGER DEPENDING BEYOND THE MECHANISM TO ENGAGE A RIB FORMED ON THE UNDERSIDE OF THE SLIDABLE COVER. THE RIB HAS A GATE POSITIONED FOR EACH BUTTON TO ALLOW PASSAGE OF THE FINGER AND MOVEMENT OF THE COVER WHEN THE BUTTONS HAVE BEEN SHIFTED TO THEIR UNLOCKED POSITIONS.
Abstract:
A handle and latch assembly for a door having a thumbpiece actuating a retractable latchbolt from engagement with a strike. A generally upright handle is mounted on the door with the thumbpiece having a single actuating shank behind the upper end of the handle and a divided or bifurcated thumb-engaging portion extending around and outwardly of the upright handle with the bifurcation allowing movement of the thumbpiece relative to the handle.
Abstract:
An extruded thread-cutting nut for the forming of threads on an unthreaded post or stud which is a one-piece nut having an extruded body provided with internal threads therein, a body flange integral with and positioned at one end of the extruded body, and a face flange parallel to and joined to the body flange by a short sidewall. The face flange is provided with a central aperture aligned with the nut body and incorporates therein a helical thread provided with one or more cutting edges. An unthreaded stud first engages the cutting edge and thread in the face flange to form the thread and then engages the interior threads of the nut body.