Abstract: A proportional fluid exchanger and recirculator having a damper element pivoted at its approximate balance point for thermostatically-responsive proportioning of fluid within a mixing chamber. Said damper element supports actuator elements, thus permitting ready installation at jobsite.

Abstract: An improved ventilation air control unit for use in grain drying and storage apparatus. The unit includes a pneumatic pathway unit that will accommodate a large fan blade, a motor and fan blade unit for causing air to move through the pneumatic unit, and a supplemental feed unit to provide supplemental air for delivery into the grain bin and for reducing air slippage around the fan blade.

Abstract: An apparatus and a method of playing a game in which a game board having a question indicator-grid and aligned response sections, for use in asking and responding to questions and answers by the placement of specialized pegs, the questions and answers relating to determining the opposing player's secretly selected ascending or descending numerical sequence.

Abstract: An "L" shaped mud pit longitudinally and horizontally hinges at an upper edge of a wall panel thereof to a portion of a vehicle frame, or an extension thereof, such that when lowered it is in ground-supported, horizontal position convenient with respect to the hole to be drilled and when raised it is in a storage-transport vertical position in which it is in line with the adjacent side of the vehicle, and its rearward portion is above the vehicle rear tire. A centrally located divider wall panel enables liquid to travel from the rear of the mud pit forward and then back again to the rear thereof where a removable extension to the mud pump intake pipe is located. Screens, adjustable leveling pads, and drain and cleanout plugs are also provided.

Abstract: A combine harvester having a tube type sensor the full width of its chaffer sieve for detecting grain loss through the vertical area between the tail end thereof and the underside of the straw walker, comprises a carrier to which the sensor is mounted and structure providing for manual positioning thereof by the harvester operator within said area at will. In another embodiment a stationary tube sensor is mounted somewhat above the chaffer sieve tail end to also indicate the effect of excessive fan speed on grain loss.

Abstract: A tire chain device of the type which has a rigid structure positioned on the inner side of the wheel upon which it is installed, said rigid structure being comprised of an adjustable length horizontal strap and two rigid depending straps pivoted from either end thereof in a manner that restricts pivoting more than 90.degree., the two ends of the horizontal strap of said inner structure being connected by two short cross links to an adjustable length outer strap, and the lower end of each depending strap being removably connected by two long cross links to a plurality of posts having expanded ends spaced along the exposed side of the outer strap. The outer strap is slotted near one end for vertical support of the inner structure in the formation of a warning triangle.

Abstract: A device for reflecting solar thermal radiation through an easterly-westerly oriented window having a reflecting surface (16) hinged (19), (19a) along the north side of the window in a manner which provides for its upwardly facing tilt as it swings away from the building wall and hinged (21), (21a) along its upper side for use as a solar shade. Sandwiched insulation (41) behind the reflecting surface (16) and a peripheral spacer (42) are also provided for insulating the window opening when the device is pivoted to a closed position against the building wall.

Abstract: A dolly for lifting and carrying dead sows and the like from and in confined spaces, respectively. A platform on castors with a vertical back has a removable pulley, at their adjoinment, through which a cable first pulls the sow horizontally onto the platform and then vertically, after the pulley is removed, along the vertical back. The cable is pulled by a winch attached to the rear side of the vertical back.

Abstract: A device for feeding baby pigs and other livestock comprising a feed pan (20), a support post assembly (30) and a hopper assembly (40), hopper assembly (40) being capable of having its vertical height above pan (20) varied by the insertion of a pin (38) through a hole (36) in a support post (34), support post (34) running through a plurality of vertically spaced and aligned washers (46) which fixedly support a cylinder element (41) of hopper (40), the selection of the washer (46) which will rest on pin (36) determining the height of hopper (40). Also provided are dividing bars (23) for separating feeding animals which do not extend to the bottom of pan (20) thus allowing easy cleaning and a handle (47) for assisting in adjusting the hopper height and for carrying the device (10).