Abstract: The drink mixer (10) includes a standard (12), base (14) and motor housing (16) formed to provide an integral, unitary wall structure adjacent a stirrer arm (18). The front of the standard and top of the base are protected by a removable splatter shield (22) which is properly positioned by a locator pin (118) formed on the standard (12). The splatter shield (22) is held in place by a cup support assembly (24) and a switch actuator assembly (26). This switch actuator assembly (26) operates a power switch assembly (58) including a flat slide plate (74) which shields a normally closed microswitch (96). The lower edge of the slide plate (74) contacts a switch actuating arm (100) to depress the microswitch button (98) when the slide plate is in an "off" position. The slide plate (74) moves away from the switch actuating arm (100) to release the switch button (98) and actuate the mixer ( 10).

Abstract: A method and apparatus for making sauce and salad dressings in which vegetable oil is trickled into a mixer at a predetermined limited rate for complete dispersion in which perfected mixing and suspension is provided by gravity accelerated free flow of oil in a thinning fine stream, or droplets, a substantial distance undisturbed by agitated air and the flow is repeatedly comminuted by high speed cutters or blades rotating edgewise at 1800 R.P.M. in a mixing operation which assures excellent suspension of the oil in a mixture which does not separate.

Abstract: An air conditioning control system for at least two duct sections each with an associated damper comprises at least one master controller for a first pneumatic actuator for one damper and at least one tracking controller for a second pneumatic actuator for the other damper. The master controller comprises a first flow sensor producing a first flow variable signal in response to a sensed flow in the duct section associated with the said one damper. An adjustable reference or bias signal means is provided and a temperature signal is combined therewith to provide a composite signal for comparison with the flow variable signal. A resultant signal after comparison operates the first pneumatic actuator for the said one damper. A tracking controller comprises a second flow sensor producing a second flow variable signal in response to sensed flow in the duct section associated with the other damper.

Abstract: An improved tamper-proof window unit comprising similar first and second quadrilateral centrally open frame members adapted to be mounted about an opening respectively on opposite sides of a door. Each frame member has a narrow elongated quadrilateral front panel extending generally in a plane parallel to the door and marginally about the door opening with an outer edge portion partially overlapping the door adjacent the opening. A small countersunk front-to-rear screw hole is provided on each side of the front panel to communicate with the door opening. A narrow elongated quadrilateral and generally L-shaped integral flange extends along the front panel with each L-shaped flange comprising first and second panels. The first panel of each flange projects generally rearwardly and the second panel projects from the rear edge of the first panel outwardly with respect to the door opening.

Abstract: The invention relates to an improved, novel method and time saving food processor and process, easily assembled and cleaned, and safely operably for whipping egg whites, or cream, and making butter, in seconds, in which two elements define two flat surfaces disposed and coacting at a right angle with respect to each other in a circular container. One of the flat surfaces is centrally rotated in a horizontal plane in the circular container to centrifugally direct and progressively drive a stream of liquid food products against the other flat surface in the presence of air, at a substantially high speed and with hard impact. The other flat surface continuously redirects the flow radially inwardly to recycle it with a continuous high frequency.

Abstract: This invention relates to an improved soil contact tool comprised of a narrow uniform width ground engaging section and a triangular moldboard section extending therefrom. The moldboard section has a center to direct soil away from the mold board with sides being generally concave to insure transverse movement of the soil to create ridges on either side of the ground working tool.

Abstract: This invention relates to a cultivating shank assembly in which a mounting frame is comprised of a mounting frame portion and a tool shank support portion pivoted thereon. The mounting frame portion and the tool support portion are formed of plates which are held together by suitable transversely extending plates which support the mounting frame on a cultivating tool bar and mount the tool shank respectively. A compression spring for the mounting assembly is connected between the tool shank portion and the mounting frame portion of the mounting frame and is guided between inner and outer cylindrical spring retainers which are pivoted respectively on the tool shank support portion and the mounting frame portion to prevent the compression spring from buckling and to guide the same such that the compressive force will always be applied along the extent of the spring.

Abstract: This invention relates to a transport wheel assembly for a tillage type agricultural implement having at least two pairs of ground support wheels mounted on the frame section of the implement. Each wheel of the pair is journaled in a separate axle mounted on the end of a pivot arm with the pivot arms being mounted in spaced shafts journaled on the implement frame. The shafts are separated longitudinally of the implement frame or across the width of the same to space the wheels longitudinally apart, and they are also separated in a fore and aft direction of the implement frame. The shafts of each pair are tied together through a hydraulic actuator which acts as a linkage to transmit motion from one wheel to the other when the implement traverses uneven terrain. The actuator in one position pivots the wheels in close proximity in the fore and aft direction for stability in turns and raising the implement and hence the ground working tools above ground level for transport.

Abstract: A mixer-liquefier including a container that is readily assembled and cleaned by the user for accelerated performance and cleanliness in handling different quantities of liquids and solids with improved uniformity of results by maintaining a constant path and rate of flow of ingredients through a comminuting zone for a determined interval of time.

Abstract: A brush spring and brush housing construction affording maximum operable brush wear without the danger of the brush spring contacting the commutator even if the brush might drop out of the housing. A hook on the brush end of the spring moves against an inclined wall of a tapered slot in the side of the housing and is directed to engage the end of the slot and be restrained from moving or twisting out of interlocking relation with the housing wall as well as being withheld from engagement with the commutator.

Abstract: This invention relates to a fire and smoke damper assembly capable of being positioned in interruptive disposition relative to the flow of air through a conduit wherein the assembly includes a flexible curtain movably mounted on the frame and attached in driven relation to a curtain mounting rod rotatably mounted on the frame. The rod and curtain are driven manually by biasing means or by exteriorly mounted motor means. Curtain guide elements including a pair of screens are arranged in spaced, substantially parallel relation to one another across the face of the conduit so as to define a channel in which the curtain is movable relative to the screens into and out of engagement about the curtain periphery with the frame.

Abstract: A damper and control unit for controlling air flow through a conduit comprises a movable damper having a ball-joint connection with the end of an actuating rod. The actuating rod has first and second angularly related portions and the first portion serves as a pivot element for a movable actuating plate, the second portion mounting the damper. The movable or swingable plate is arranged above an expandible and contractable actuating bellows and has a stop chain associated therewith for limiting downward swinging movement thereof in the direction of bellows contraction. The bellows has a supply line leading to the conduit upstream of the damper and a control unit is interposed in the line for determining bellows pressure. Conduit pressure and/or temperature signals are supplied to the control for bellows and damper operation as a function thereof. A seat associated with the damper is uniformly and tightly engaged whereby to seal the conduit due to the floating or ball-joint damper connection with its actuator.

Abstract: A fire and impact resistant window assembly comprising a multi-part centrally open marginal frame having an intermediate or inner groove which faces inwardly and first and second outer grooves which also face inwardly. The intermediate or inner groove receives marginal portions of a pane of fire glass which is thus secured in the frame and extends across the central opening thereof. The outer grooves respectively receive marginal portions of first and second panes of deflectable impact resistant polycarbonate and thus secure the panes in opposite spaced relationship with the fire glass. One pane of polycarbonate is approximately one half (1/2) inch in thickness and is spaced from the fire glass a distance of 0.35 inches. The other pane of polycarbonate is approximately one fourth (1/4) inch in thickness and is spaced from the fire glass a distance somewhat in excess of 0.35 inches.

Abstract: An air handling grille with an open rectangular frame which defines two opposing grooves each bounded by a narrow flange. A series of adjustable vanes each with opposite bearing studs is preassembled with elongated resilient bearing members. Each bearing member has a series of small openings to hold the bearing studs. The bearing members are mounted on the studs during preassembly and the members are thus entered in the grooves. Each member includes a flange which is deflected inwardly during assembly and thereafter latches the bearing members in assembled position. The flanges also tend to twist the bearing members restricting bearing openings therein and frictionally retaining the studs. A second series of vanes is supported by a pair of cross members. Spring clips secure the vanes on engagement with ends of the cross members.

Abstract: A tamper-proof window unit comprising similar first and second quadrilateral centrally open frame members adapted to be mounted about an opening respectively on opposite sides of a door. Each frame member has a narrow elongated quadrilateral front panel extending generally in a plane parallel to the door and marginally about the door opening with an outer edge portion partially overlapping the door adjacent the opening. A small countersunk front to rear screw hole is provided in each side of front panel of a first frame member and the opening is spaced inwardly from the outer edge of the panel so as to communicate with the door opening. A narrow elongated quadrilateral integral flange extends along and projects rearwardly toward the door from an outer edge of each front panel. A second narrow elongated quadrilateral and generally L-shaped integral flange extends along the inner edge of each front panel with each L-shaped flange comprising first and second panels.

Abstract: A conduit with inlet and discharge ends respectively for receiving a supply of air under pressure and for delivering the air at a lower pressure has a cylindrical configuration and an eliptical butterfly type damper is disposed diagonally therein. The damper turns about an axis intermediate its diagonally opposite ends and the oncoming air stream thus impinges on the upstream face of the damper on opposite sides of the axis and creates a differential force, the said differential force tending to close the damper and constituting a first closing force. A second closing force for the damper is provided by a small bellows supplied with air through a small conduit from the downstream side of an orifice member disposed in the main conduit upstream of the damper. A second and substantially larger bellows serves to open the damper and a small conduit connects the said bellows with a controller supplied with air from an upstream side of the orifice member in the main conduit.

Abstract: An air distribution system supplies conditioned air to at least one zone to be conditioned and comprises a supply duct connected with a diffuser discharging into the conditioned zone. A modulating valve in the supply duct is provided with a bellows actuator for regulating the flow of air into the zone and a secondary conditioning apparatus such as a heater is provided in the supply duct for warming the air before introduction into the zone. The control system for the bellows actuator and for the secondary conditioning apparatus is of the fluidic type with power for the actuator and control system supplied from a total pressure pick-up in the duct. A thermostat for supplying temperature responsive fluidic signals to the bellows and control system is provided with manual adjustments for setting the minimum and maximum flow rates of conditioned air into the zone.