Abstract: An oscillating wave-type sprinkler having a housing supporting an elongated spray tube which is driven by a water motor to oscillate from side-to-side about a generally horizontal axis. A throttling mechanism is provided to cyclicly throttle the water flow to the spray tube to improve distribution and enhance the aesthetic appearance of the wave-shaped spray, and the spray tube is mounted to the housing by end fittings which eliminate thrust loading on the tube.

Abstract: The latch bolt assembly makes use of a metal latch bolt head in which is positioned an anti-friction insert extending entirely through a slot in the head from the angled face to the straight face. For holding the insert in place there is a slot in the inside end of the insert engaged by the head on a rod which projects into the inside end of the latch bolt head, in that way to secure the respective parts in interlocked relationship.

Abstract: To lock the head of a latchbolt in extended, or locked position therein to prevent opening of a door in case of fire the latch bolt head is provided with a spring driven locking pin reciprocatably mounted in a transverse direction. In the extended locked position of the latch bolt head the locking pin is in alignment with but withdrawn clear of a hole in the latch bolt case. At the inside end of the locking pin is a groove and a fusible pin normally engages the groove holding the locking pin in withdrawn position. This permits normal latch bolt action. When the fusible pin melts because of heat from a fire the locking pin is released and driven by spring action into the hole in the latch bolt case to physically bar withdrawal of the latch bolt, and consequent opening of the door.

Abstract: For translating the linear motion of a pivotally mounted thumb piece for a front door latch into the rotary motion needed to withdraw a latch bolt, two rotary members are employed. One is a bell crank having a pivotal mounting on the mounting plate at one side of and at right angles to the pivotal mounting of the thumb plate and rotationally responsive to linear motion of the thumb piece. The other is a drum having a rotatable mounting on the mounting plate parallel to and spaced from the bell crank pivotal mounting, and at a location adjacent a roll back of a latch bolt. A resilient connector strip from the bell crank to the drum causes the drum to be rotated in response to rotation of the bell crank. A torsion return spring attached to the drum acts to return the drum and the bell crank to their original positions.

Abstract: The invention involves a mechanism for simultaneously retracting two separate latch bolts which have previously been extended by their individual separate mechanisms. The individual mechanisms comprise a substantially conventional knob actuated latch bolt, and what is commonly called a locking dead bolt. There is a lever arm attached to the knob spindle and a bell crank arm on a thumb turn shaft of the dead bolt. A flexible strip anchored at one end to the free end of the lever arm projects slidably through a swivelling sleeve on the free end of the bell crank. By providing a stop at the extremity of the strip by rotation of the knob spindle and its lever arm the bell crank is induced to rotate and withdraw the dead bolt to unlocked position, at the same time that the latch bolt is withdrawn to open the door. Conversely, when the dead bolt only is withdrawn, by rotation of the thumb turn shaft merely to unlock the door, the strip will slide through the swivelling sleeve.

Abstract: A security type dead bolt for a door is arranged so that a key must be used on the inside, as well as on the outside, to extend the dead bolt to locked position, in that way to prevent an unauthorized person opening the door from the inside after surreptitious entry. To make certain that when the occupant is at home and with the latch bolt extended by the inside key to locked position, there can be no lost key situation blocking exit by the occupant in case of an emergency such as a fire, the dead bolt mechanism is arranged to trap the key in the lock whenever the dead bolt is extended to locked position, but to release the key when withdrawn. A yieldable mechanism permits unlocking the latch bolt from the outside even when a key is left in the lock on the inside.