Abstract: A foldable loading ramp for a truck having a tailgate. The ramp includes a plurality of ramp sections. The top section of the ramp is pivotally connected to the tailgate, and is attached to an adjacent section by two pivoting bars connected to the sides of the top section and to the sides of the adjacent section. One of the bars is connected to the middle of the top ramp section and the end of the adjacent ramp section. The other bar is attached to the end of the top ramp section and the middle of the adjacent section, thereby allowing the ramp to be folded into a compact bundle inside the tailgate when not in use.

Abstract: An improved arrow support device to be used on archery bows, including a pair of arrow support members, rigidly attached to a pivotable yoke member. The arrow support members are bound by the yoke member and oriented in relation to one another so that upon the discharge of an arrow, the arrow shaft contacting the outer tips of the arrow support members present no obstruction to the passage of an arrow with fletching. The yoke member pivots about an axis oriented so that the arrow contacting surfaces of the arrow support members can move downwardly at an angle inclined toward the surface of the bow sight window. The yoke member is held against a stop by spring tension. When the arrow bends due to the initial impact of release, the yoke assembly pivots against the spring tension which will return the yoke assembly to the stop when the initial bend of the arrow shaft passes through the zero point of the "S" curve. The yoke assembly is pivotally attachable to a pivot frame assembly which is attachable to a bow.

Abstract: An apparatus for driving fence post into the ground operable with a tractor having a power lift mechanism with two lift arms pivotally connected to the tractor for moving upwardly and downwardly in response to hydraulic force applied thereto, the apparatus including two lever arms pivotally connected to the chassis of the tractor, a rigid bar connecting the rear ends of the two lever arms, a pivot arm member rigidly connected to the rigid bar and extending upwardly therefrom, a base member rigidly mountable on the rear of the tractor chassis having a support arm member extending upwardly therefrom, and an elongated drive member pivotally connected to the upper end of the support member and to the pivot arm member for driving posts or stakes into the ground.

Abstract: This invention relates to a quick drying and setting coal binding system which comprises (a) an aqueous solution of SiO.sub.2 /Na.sub.2 O or SiO.sub.2 /K.sub.2 O; (b) a water soluble surfactant; and (c) an organic ester.

Abstract: A method of purifying waste water from oil well rigs in order that the water may be made suitable for reuse on the rig or disposed of conventionally is disclosed. The method incorporates a series of aerators and corresponding collection tanks to first aerate, then collect, the waste water a number of times. In each collection tank, sediment precipitates to the bottom of the tank, permitting the clearer water to overflow, or to be skimmed, from the collection tank. A soluble aluminum salt is added to the waste water at an initial stage of aeration in order to coagulate waste particles within the water and form solid precipitates which then settle to the tank bottom, permitting the clearer water to pass on to subsequent aerators and sedimentation tanks, until ultimately, the water may be disposed of without polluting or contaminating the environment.

Abstract: A lifting tool for lifting an internal combustion engine having an intake manifold, the lifting tool including a mounting plate for connecting to the intake manifold of the engine, the mounting plate having a plurality of holes therein aligned with bolt holes or studs in the intake manifold, a "U"-shaped bracket connected to the mounting plate for receipt of a hook or chain connected to a lifting device such as a chain hoist, and a plurality of safety chains connected to the "U"-shaped bracket for connecting to the engine to prevent the engine from falling to the ground if the "U"-shaped bracket should separate from the mounting plate or if the mounting plate should separate from the engine while the engine is being hoisted.

Abstract: A scabbard for holding a knife having a folding blade, the scabbard having means therein for engaging thumb slits in the blade of the knife while the knife is being removed from the scabbard to enable the user of the knife to pivot the blade to the open position as the knife is being withdrawn from the scabbard. The means for engaging the thumb slits in the blade can be two pins mounted in the side of the scabbard or two longitudinal ridges or springs extending from the inner walls of the scabbard to engage a substantial length of the thumb slit in the blade of the knife. In one embodiment of the invention, the conventional thumb slits of a folding knife are extended to the end of the portion of the knife blade which first contacts the means for engaging the knife blade to enable the thumb slits to be engaged by the ridges, springs, or pins in the scabbard.

Abstract: A boat trailer including a frame having a tongue rigidly connected thereto and an axle with wheels thereon connected to the frame by springs, the frame also having pivotally connected thereto a ramp mounted on the rearward end of the frame on an axis perpendicular to the longitudinal axis of the tongue of the trailer, the ramp being mounted independently of the wheels supporting the frame, the ramp having the major portion of its length extending forwardly of the perpendicular axis of the frame and a plurality of rollers mounted in the center thereof, and having two flat runners extending parallel and perpendicular to the pivotal axis of the ramp for supporting the weight of the boat.

Abstract: A hair curler having a hollow body and an elastic retaining band connected thereto for retaining the hair against the curler body which retracts into the body of the curler when the curler is being unwound from the treated hair to prevent the band from becoming entangled in the hair. Preferably, the curler body has a series of holes or perforations therein so that curling or setting solutions may travel through the body of the curler through the perforations or holes to thoroughly contact and wet the hair wrapped around the curler.

Abstract: A portable apparatus for suspending an object to be cooked in close proximity to a heat source while rotating the object about a vertical axis. The hook upon which the meat or objects to be cooked or hung is rotated by a chain connecting a sprocket on the hook with a sprocket on an electric motor. The chain is sufficiently long so that the motor may be placed far enough from the fire or heat source to prevent damage to the motor. Preferably, the hook and motor is contained within a single frame which has two hooks at the top thereof so that the frame may be suspended from a horizontal pipe.

Abstract: A fishing seat tray assembly which is easily attachable to the common pedestal seat utilized by modern sport fishermen. The tray assembly of the invention includes, in combination therewith, a novel attachment means. The attachment means includes at least two plates which have at least one ridge thereon which cooperates with and is received in a slot contained in the tray. The plates are connected to the bottom side of the seat by screws, bolts or any conventional fastener means.

Abstract: An apparatus for mixing particulate livestock feed with a viscous fluid such as syrup, the apparatus including a drum for receiving feed, "U-shaped mixing blades contained in the drum and mounted on a rotatable shaft for agitating and mixing the feed, a fluid pump for pumping syrup into the mixing drum, an outlet connected to the mixing drum at the end opposite the inlet of the livestock feed to the mixing drum, and an auger conveyer located beneath said outlet for conveying the mixture of feed and fluid to a desired location, the apparatus being inclined at an acute angle with the horizontal to position the outlet of the mixing drum at a height lower than the inlet.

Abstract: A padding press is disclosed for firmly holding sheets of paper to which adhesive, gummed cloth, or other material is to be attached at one edge to make the sheets into pads or books.

Abstract: An apparatus for distributing the weight of a workover or maintenance apparatus connected to a Christmas tree over the surface of the portion of the Christmas tree to which the workover apparatus is attached, including a plate which rests upon the portion of the Christmas tree to which the workover apparatus is attached, and a rigid support extending upwardly from the plate, the rigid support being connectable to said workover apparatus. The apparatus may include plugs for plugging the other strings of tubing contained in the Christmas tree to which the workover apparatus is not attached, and devices for adjusting the length of the rigid support.

Abstract: An educational teaching device which is formed in the shape of the hand or the foot of a human. In one embodiment of the invention, the educational device comprises a frame in the shape of a human hand having a palm, a thumb and four fingers, the frame having a first groove in the palm, a second groove in the thumb, and a third, fourth, fifth and sixth groove in the first finger, second finger, third finger and fourth finger respectively, the grooves containing one or more beads that can be manipulated to perform, and teach the student, various arithmetic operations. In another embodiment of the invention, the frame is in the shape of a human foot with a similar arrangement of grooves therein.

Abstract: A method of purifying waste water from oil well rigs in order that the water may be made suitable for reuse on the rig or disposed of conventionally is disclosed. The method incorporates a series of aerators and corresponding collection tanks to first aerate, then collect, the waste water a number of times. In each collection tank, sediment precipitates to the bottom of the tank, permitting the clearer water to overflow, or to be skimmed, from the collection tank. A soluble aluminum salt is added to the waste water at an initial stage of aeration in order to coagulate waste particles within the water and form solid precipitates which then settle to the tank bottom, permitting the clearer water to pass on to subsequent aerators and sedimentation tanks, until ultimately, the water may be disposed of without polluting or contaminating the environment.

Abstract: A wheel structure adaptable for use on a trailer or an automobile hub including a spoked member having at least three spokes, each of the spokes being adapted to contact a rim on which a rubber tire may be mounted, the spoked member having a series of outer bolt holes corresponding to the number of spokes, the spoked member having a series of inner lug bolt holes for receipt of the lug bolts attached in an automobile or other hub and a hole centered in the wheel structure for receipt of an axle or other protuberance from the automobile hub.

Abstract: A display board and a hook for use therewith which securely prevent the hook from becoming easily dislodged by shaking the board or by removing an article suspended from the hook. The display board includes a series of apertures therein, the apertures having a vertical portion and a transverse portion, with the angle therebetween being greater than 90 degrees. The board contains at least two of such apertures having transverse portions extending to the opposite sides of the vertical portions.

Abstract: A projectable guard for a projectable lawn sprinkler for preventing foreign matter from entering the sprinker. The sprinklers to which the projectable guard is attached automatically rise from the ground when water pressure is applied thereto. The sprinklers have a housing, a pipe rigidly connected to the housing, a projectable conduit connected to the pipe, and a sprinkler head attached to the projectable conduit. The boot connects to the housing and the projectable pipe to prevent grass, leaves, sand, dirt, and the like from entering the housing.

Abstract: An improved arrow support device to be used on archery bows, including a pair of elongated, generally non-resilient arrow support members, rigidly attached to a pivotable yoke member. The arrow support members are bound by the yoke member and oriented in relation to one another so that the arrow shaft contacting outer tips of the arrow support members present no obstruction to the passage of an arrow with fletching, upon discharge of a shot. The yoke member pivots about an axis oriented so that the arrow contacting surfaces of the arrow support members can move downwardly at an angle inclined toward the surface of the bow sight window. The yoke member is held against a stop by spring tension. When the arrow bends due to the initial impact of release, the yoke assembly pivots against the spring tension which will return the yoke assembly to the stop when the initial bend of the arrow shaft passes through the zero point of the "S" curve.