Abstract: A mailbox with a hinged access door includes a door-operating handle having an indicator plate or flag which can be moved between alternative positions when opening and closing the door to indicate respectively that mail is to be collected from the box or the mail has been collected and/or delivered. The handle is positioned to rest on the lower portion of the mail delivery vehicle window opening to support the mailbox door when in open position. Also, the interior of the mailbox includes a mail holder to retain outgoing mail in a conveniently accessible position so that the mail delivery person may make a quick and easy pickup of the mail.

Abstract: A freestanding stove is provided including an elevated firebox mounted atop a tubular pedestal having a horizontally enlarged downwardly opening hollow base at its lower end. The firebox includes a combustion air inlet opening downwardly into the pedestal and the lower end of the pedestal opens downwardly into the hollow base which includes a damper for controlling the flow of combustion air from within the hollow base into the lower end of the pedestal. The base includes feet supporting the base a spaced distance above a horizontal surface upon which the feet rest and the feet are removable whereby the base may rest directly upon and over a horizontal support surface upwardly through which a combustion air opening is formed. The front of the firebox includes an openable transparent window equipped door and combustion air inlet passage structure for sweeping curtains of combustion air across the inner surface of the window from selected marginal portions thereof.

Abstract: A circularly configured rotatable element rotationally mounted for use in a drafting, drawing, tracing or light tabletops of generally rectangular or square configuration, a concave-convex annular interface disposed between the circular element and the adjacent portion of the tabletop and a series of 360.degree. sockets or apertures arranged along the interface for receiving a locking spring pin element therein. Also, indicia displaying 360.degree. markings may be disposed about peripheral portions of the circular element. A swivel assembly such as used in a lazy susan is used to support the rotatable element. In one embodiment, the circular element is constructed of transparent, translucent or similar material with a set of at least a pair of fluorescent lights mounted thereunder. In another embodiment, the rotatable element is in the form of an opaque, light impervious circular element.

Abstract: A casing for support from the free swinging edge of a door is provided and a latch bolt is shiftably supported from the casing for movement between projected and retracted positions. The bolt is spring-biased toward the retracted position and a strike is further provided for stationary mounting on a frame member toward and away from the associated door and casing may swing to the closed and open positions, respectively. A bolt operator is shiftably supported from the casing for shifting between first and second positions and the bolt operator and bolt include coacting portions to positively shift the bolt to its projected position responsive to movement of the operator to its first position.

Abstract: A pulse generating electronic circuit is utilized as a matching network between a line operated video tape recorder (VTR) and a battery powered portable camera. Through the use of appropriate logic circuitry, the pause control button of the VTR, which normally operates to provide an on or off signal pulse, is disabled, and the time delay experienced by a camera activated electrical signal passing through the VTR electronics is utilized to generate the on or off signal pulse.

Abstract: An elongated air manifold is provided to be positioned with the manifold extending across the opening of a fireplace closed by conventional glass doors. The manifold is disposed inward of the glass doors and includes outlet openings spaced longitudinally therealong and a shiftable damper plate for variably opening and closing the outlet openings. The opposite ends of the manifold include air inlet openings with which air ducts opening to the exterior of an associated building are communicated and the air inlet openings of the manifold have valve structures operatively associated therewith for variably opening and closing the air inlet openings. The valve structures and the damper plate may be operated from within the fireplace.

Abstract: An electrical outlet is connected in a parallel circuit to the compressor unit of a standard household refrigerator. A lamp can be connected to the outlet and will thus provide random lighting in the house in accordance with the on-off cycle of the refrigerator refrigeration unit thus giving the appearance that there is activity within the house to discourage burglars or the like.

Abstract: A sleeve is provided for snug reception through a bore in a floor slab and an elongated shank is provided for snug sliding reception through the sleeve with the opposite ends of the shank projecting outwardly from the corresponding ends of the sleeve. One end of the sleeve is provided with an enlargement thereon tapering toward the other end of the shank and the maximum diameter of the enlargement is less than the outside diameter of the sleeve. The enlargement includes a minor diameter end which may be wedgingly received within the adjacent end of the sleeve and the enlargement includes circumferentially spaced, radially outwardly tapering and longitudinally extending flutes formed thereon. The flutes are spiraled, slightly, about the enlargement and are inclined less than 30.degree. relative to the longitudinal axis of the shank.

Abstract: A multi-directional canted wheel carrier with shiftable control arm for supporting operable wall panels from upper and/or lower supporting tracks, with the control arm engaging a track slot or guideway and supported from the carrier for shifting when necessary between a leading and a trailing relationship to the panel supporting bolt to facilitate multi-directional movement of the carrier through track intersections. The carrier includes a single canted wheel or multiple canted wheels, and the bearings and tilt body structure of the canted wheel assembly provide efficient multi-directional movement of the carrier with minimum force requirements.

Abstract: Workpiece stop structure is provided for workpieces to be supported from and rotated by adjustable jaw chucks and collets. The stop structure may be used to great advantage in that successive workpieces may be tooled or cut to the same length dimensions with a minimum of effort. Further, the stop structure includes several different forms, all of which may be readily adjusted to accommodate workpieces of different lengths and the disclosure further includes an insertion tool for facilitating proper insertion of an expandable plug portion within a supportive hollow cylindrical member.

Abstract: The basin includes a standpipe having axially extending slots spaced vertically from its bottom. A baffle extends coaxially within the pipe around the slots to separate oil and grease from the runoff. The accumulated water is held in the standpipe thereby allowing the larger particles to settle out into the lower portion of the standpipe before the water flows through the slots into an outer chamber. The outer chamber contains a cylindrical filter element through which the water must flow. The filter element removes suspended lighter solids and any remaining grease or oil not removed in the standpipe. The cleansed runoff finally is discharged through an outflow pipe extending from the outer chamber. The standpipe can be periodically cleansed by removal of a drop inlet grate which covers the pipe. Furthermore, the filter element can be removed for cleaning.

Abstract: Fan motors, and the like, are mounted to a unit having mounting holes of different spacing from the mounting holes of the fan motor by the use of one or more brackets each constructed around a substantially planar member provided with at least a pair of slots, each of which slots are arranged for attachment to one of the motor and a motor support member of the associated unit. The slots may be of equal or dissimilar lengths and may extend longitudinally either codirectionally and/or perpendicularly with respect to one another, and some of the slots may be arcuate in plan in order to facilitate the mounting of motors having a generally cylindrical housing.

Abstract: A fireplace heating system having a fireplace furnace connected to a heat transfer device and to a fluid source for heating a fluid received from the source and feeding heated fluid to the heat transfer device in order to heat a building, and the like, in which the heat transfer device is located. The furnace coils forming a grate and arranged extending in a tortuous path in vertically displaced, substantially horizontal planes and a substantially vertical plane extending between the horizontal planes for partially surrounding a fire built on the coils in order to achieve efficient heat transfer between the fire and the fluid being passed through the coils.

Abstract: A solid fuel stove is disclosed having a hinged door adapted for loading of aggregate solid fuel in the form of lumps or chunks, such as coal, and a second hinged door located at the side or end of the stove, adapted for loading of elongated sections of long solid fuel, such as sections of wood. The stove further includes a third hinged door for cleaning out ashes, and a scoop-shaped baffle for restricting the flow of flue gases and diversion of unburned gases back into the combustion zone. Cast iron liners confine the burning area and protect the stove walls, and oval collar sections connect the upper back section of the stove with a conventional smoke pipe for exhausting the products of combustion.

Abstract: Two frame sections are hingedly attached at their top and each frame section contains a pair of wheels at the bottom. One of the frame sections consists of a pair of laterally spaced parallel side rails having horizontal steps disposed therebetween. The other frame section contains a pair of parallel spaced channel bars on which ride a vertically movable platform. The platform can be hoisted along the channel bars by use of a hand crank and winch assembly. The two frame sections can be folded together for use as a conventional hand truck or the frame sections can be folded apart and the wheels locked for use as a stepladder.

Abstract: The device comprises a transverse frame member having depending border disc mounts. The transverse frame member also has a hitch extending forwardly therefrom for attachment to a three point hitch on a tractor. The water stop attachment has a ladder type framework with one side of the ladder frame pivotally attached to the border disc transverse frame member. A spaced parallel frame member of the ladder frame is attached to a plurality of stop plates which are located directly behind the depending border disc mounts. A single hydraulic cylinder extends between a raised portion of the three point hitch and a central member of the ladder frame for raising and lowering the stop mechanism upon actuation of a hydraulic switch or valve located in the cab of the tow vehicle.

Abstract: A frame having a pair of upstanding side members is attached to the three point hitch of a tractor. The frame includes a base which can rest upon the ground adjacent a post to be removed from the ground. A plate is slidably attached for vertical movement along the side members and includes a hydraulically operated clamp for attachment to the post. A hydraulic cylinder is attached between the top of the frame and the plate and pulls the frame vertically after the clamp is attached to the post.

Abstract: The pump comprises two separate pumping units, one each for the systemic and pulmonary circulation systems. Each pumping unit has an outer housing enclosing a cylindrical pumping chamber. Two radially extending vanes are contained within each chamber and divide the chamber into two separate subchambers, the relative size of which varies as the vanes rotate through the pumping cycle. Pumping action is achieved when one of the vanes is held stationary while the other vane rotates. This causes one subchamber to decrease in size. This subchamber is disposed over an outlet port and the blood is forced out of that subchamber. The other subchamber is increasing in size and is disposed over an inlet port. Blood enters this inlet chamber both in a passive manner and through the suction caused by the increasing size of the subchamber. A sensor is positioned near the inlet port and measures the volume of blood entering through this port.