Abstract: A practical and simple system that automatically measures and dispenses grain and powder type food products, such as sugar and flour contained within a canister type holder. The system consists of a drawer compartmentalized into precisely measured divisions with the topside uncovered and the bottomside selectively covered or uncovered by a moveable slide that allows for the pulling out of the drawer without spillage. The drawer will stop at one of several preset measured positions. These positions are controlled by a spring-pressured arm. With the drawer in a selected position the contents of the outward division or divisions of the drawer are dispensed accurately and immediately by pushing inwardly the moveable slide covering the bottom side. When the drawer is pulled outward an attached trailing horizontal upper slide prevents any of the contents within the canister from filling the empty area behind the drawer when the drawer is pulled out.

Abstract: An electronically controlled, pneumatically actuated pumping system is provided that is especially designed for the precision dispensing of liquids. The system includes a positively actuated inlet valve, and a small-diameter, long-stroke pumping piston that is physically stopped at each end of its stroke. The unique inlet valve and piston enable the system to repetitively dispense metered volumes of fluid at better than one tenth of one percent accuracy. A unique calibration mechanism and detachable dispensing head allow for the rapid disassembly, cleaning, and reassembly of the system. An alternative embodiment of the pumping system incorporates a plurality of dispensing nozzles controlled by a single inlet valve and pumping piston combination. The dispensing unit may be shiftably mounted on a vertically oriented stand, and may be automatically shifted upwardly as fluid is dispensed to minimize splashing and atomizing of the dispensed fluid.

Abstract: A system for transferring liquid to a multi-well culture plate which includes a machine having a frame upon which is mounted a platform for supporting the culture plate, a transfer plate above the platform and a piston plate above the transfer plate. The transfer plate includes a plurality of chambers closed at the top by a diaphragm. The open bottoms of the chambers may be immersed in a source of the liquid to be transferred on the platform such as a culture plate or reservoir, and the piston plate may be selectively inserted into the chambers of the transfer plate against the diaphragm so that the liquid may be drawn into the chambers from the source. The liquid thereafter may be discharged from the chambers into a multi-well culture plate placed on the platform.

Abstract: An improved roller mill construction. Material to be milled or ground is fed through a discharge opening in a hopper to a pair of cooperating rolls that are mounted within a housing. The discharge opening is enclosed by a sliding gate which is biased to the closed position and can be opened by manual operation of a pull rod. An adjustable setting mechanism is incorporated with the pull rod and enables the gate to be held at an infinite number of open positions.

Abstract: An adjustable stop for gripping a rod at selected locations intermittent the length of the rod, including a base member with a pair of longitudinally spaced openings for receiving a rod having a longitudinal axis. A clamp member is provided with an opening located between the base member openings for receiving the same rod. A cam surface is provided on the clamp member for engaging the base member to misalign the clamp member opening between the two base member openings for gripping the rod with the three openings as the clamp member is rotated about the rod's longitudinal axis when the rod extends through the adjustable stop.

Abstract: System for distributing secondary fluid into a primary fluid, as in a fire-fighting system, including a proportioner having plurality of passages, each of which is sized for the amount of secondary fluid necessary for a particular one of a plurality of fire-fighting elements.

Abstract: A novel self-metering and dispensing device for fluids obtained from a pressurized fluid supply is provided. Tubing and valving means permit the introduction of fluid into and discharge from a closed cylindrical reservoir. The reservoir contains a slideably disposed piston coacting with a coil compression spring, piston travel determining the amount of fluid in the reservoir. Once the determined amount of fluid is introduced into the reservoir, the fluid is discharged by the force of the coil compression spring acting upon the piston.

Abstract: An arrangement for adjusting the inward pressure stroke of a reciprocable pump plunger operating in a pump cylinder mounted on a closure cap of a hand-operated pump, includes confronting limit stops on the plunger head and on the closure cap, with one of the stops having stop portions at differing axial distances relative to the plunger, and the other stop having a portion at a fixed axial distance relative to the plunger. The confronting stop portions are individually and selectively engageable with one another for adjusting the pressure stroke of the plunger to thereby vary the output.

Abstract: A fluid control valve including a housing with a chamber therein, a hollow barrel, an elongated trigger, a seal and spring. The chamber communicates with a source of fluid, and also has one end of the barrel, which is axially slideably mounted in the housing with the other end outside the housing. The barrel's normal position is furthest into said housing and, its activated position is axially outward therefrom. The trigger is substantially perpendicular to the barrel and is positioned on the barrel and engages the barrel adjacent to the housing with the barrel passing through an opening at one end of the trigger. The seal is movable in the chamber and normally closes one of the communication. The spring is in the chamber urging the seal and barrel into their normal position. Activation of the trigger engages the barrel, moving it axially against the spring permitting the seal to open the communication.

Abstract: A delivery device and method making use of a plunger which can be controllable reciprocated within a housing to regulate the amount of material expelled from the housing. The plunger includes an adjustable stop collar which can be adjustably positioned, preferably by depressing the sides of the collar. In addition, a piston within the housing is sealably releasable from the plunger.

Abstract: This invention relates to a dispensing device (1) suitable for use in dispensing a predetermined quantity of material from a container comprising a tubular body member (2) having an outlet (6) at one end, and a plunger (17) slidably movable in said body member. The dispensing device comprises an elongate body (3), and a first drive member (10) mounted in the body (3) for use in driving said plunger (17).According to the invention the first drive member (10) is mounted for driving engagement via an unidirectional drive transmission (12,13), with a second drive member (14) having a free end (15,16) drivingly engagable with the plunger (17) of the container, so that said second drive member (14) and the plunger (17) can be driven by the first drive member (10) via the unidirectional drive transmission members (12,13), only in a direction towards the container outlet (6) while permitting return movement of the first drive member (10).

Abstract: A lawn spreader for particulate material such as grass seed or fertilizer has a slidable control knob immediately adjacent the handle gripping portion for movement by one or more fingers to control the rate of feed of particulate material from the spreader without removal of either hand from gripping position. An adjustable stop for the control knob is also provided adjacent the handle gripping portion for ready adjustment without stopping the spreader and without requiring the operator to bend or stoop to reach to or adjacent to the rate gate.

Abstract: An adjustable volume dispenser comprises a barrel assembly having an internally threaded tubular portion, an adjustable stop formed with external threads engaged with the internal threaded tubular portion of said assembly, and a sleeve coaxially mounted within the tubular portion and rotatable therein, said sleeve being connected to the adjustable stop for imparting rotation thereto but allowing said stop to move axially thereon. A finger engageable wheel connects to the sleeve for rotating the adjustable stop relative to the barrel assembly, a plurality of numbered wheels being coaxially connected to the finger engageable wheel for indicating the position of the stop and the volume of liquid to be dispensed. A plunger assembly is provided including a rod reciprocally removeable within the barrel assembly, said rod extending coaxially through the adjustable stop, the sleeve and said wheels.

Abstract: A spreader unit is provided for connection to a hopper carried in an airplane for spreading granular material at a controlled rate of flow. A moveable gate on the spreader is moveable between a closed position covering a discharging opening through which the granular material may flow and an open position defining a gap to allow a predetermined flow rate of granular material from the hopper. A new and improved adjustable control 70 is provided in the cockpit of the airplane adjacent the pilot for manipulation by the pilot to control the gate width to an accurate degree to provide the desired flow rate despite deflection or other binding or lost motion in the linkage or levers in the actuating means for the gate. The control is positioned on the spreader adjacent the gate and a spreader extends from the actuator into the cockpit. A turnable handle is positioned adjacent the pilot for adjusting the size of the gap and thereby the flow rate of the granular material from the hopper.

Abstract: A liquid dispenser apparatus including a liquid container, a pump for withdrawing metered quantities of liquid from the container and comprising a cylinder that defines inlet and outlet ports and a piston manually reciprocable between an intake stroke during which liquid is drawn through the inlet port and a discharge stroke during which liquid is expelled through the outlet port, a manual selector for adjustably fixing the maximum length of the discharge stroke, and a manual valve for selectively opening and closing the inlet and outlet ports. A pump rod is fixed to the piston and extends out of the cylinder so as to be manually operable to produce the intake and discharge strokes and the selector includes an adjustable limit mechanism that limits the length of the intake stroke and thereby the discharge stroke.

Abstract: An apparatus for holding a syringe and filling ampules is described. The apparatus is comprised of a housing having a base and a vertical support member. A syringe holder is affixed to the vertical support member in a manner which permits the syringe holder to slide up and down between two limits on the vertical support member.The apparatus operates by first lowering the syringe holder downward to place the needle of the syringe (in the holder) into an ampule, in response to the downward movement on the device's handle. Further downward movement of the handle causes material from the syringe, such as a viscous liquid, to be dispensed into the ampule.

Abstract: A paste dose dispenser is provided which incorporates a housing (1) through which passes a drive rod (3) connected to a plunger (4). A lever (14) is pivotally mounted on a pin (15) for movement towards a handle (2), such action causing a plate (9) to tilt and thus grip the rod (3) and drive the rod in a forward direction against the bias of a spring (11). The degree of movement of the lever (14) is determined by the position of the sliding dose adjuster (19) carrying steps (21) which will be engaged by a boss (20) carried by the lever (14). Ball and detent locating means (24) are provided to hold the dose adjusting plate (19) in each of the alternative positions. Fine adjustment of the degree of movement of the lever (14) can be effected by screwing the boss (20) into the handle (14) and securing it by a lock nut (29).

Abstract: A dispensing device is provided herein for dispensing a selected amount of material from a container. The device includes a central disc which rotates to deliver a desired amount of material according to a pre-set adjustment. Total emptying of the container is assured due to the conically shaped hub member and the arcuate interior walls of the dispensing device.

Abstract: A method and device for forcing segregated plasma from a flexible collecting bag containing a layer of plasma over a layer of red blood cells has a member to reduce the chance for a portion of the red blood cells to also flow from the collecting bag. The device has a fixed member mounted normal to a base, and a movable member connected to the base by a hinge and urged toward the fixed member by a spring. The spring squeezes the collecting bag, which is supported between the fixed and movable members, forcing the plasma from the top of the bag. A stop member automatically stops the movement of the movable member when a large portion of the plasma has been forced from the bag. The stop member is releasable, allowing further movement of the movable member to remove the remaining portion of the plasma while being closely monitored by an operator.

Abstract: Apparatus for the parenteral fluid administration to a patient including a pressure applying piston to apply pressure to a flexible bag containing the parenteral fluid. The piston has an indicator to indicate its movement and stop devices are provided which can be adjustably positioned to give the piston a predetermined movement to dispense a predetermined quantity of fluid.

Abstract: A pipettor for threaded attachment to a liquid containing jar provides for dispensing a controllable volume of liquid with a high degree of precision upon manually operating a plunger. The liquid volume dispensed in a single plunger operation is adjusted by rotation of the plunger knob. Both a linear coarse scale and a circular fine adjustment scale are provided for accurately setting the volume to be dispensed. Positive detent stops are provided for accurate volume settings. Improved air purging and plunger locking mechanisms are also provided.

Abstract: A drench gun having at least one interacting bore and piston to define a variable volume working space, a liquid exit from the working space, a liquid inlet to said working space, and a dose adjustment mechanism to vary the volume swept by the piston to adjust the dosage delivered by the gun. The dose adjustment mechanism comprises a body plug formed in two halves having a passage extending longitudinally therethrough, a movable sleeve located in the passage to abut the piston to adjustably limit movement thereto, and an adjustor projecting into the sleeve and adapted to rotate around the axis thereof. The adjustor and body plug are adapted to engage the sleeve so that upon rotation of said adjustor said sleeve is moved along longitudinally relative to the piston.

Abstract: A liquid dispenser adapted to fit over the open top of a container has a pump plunger connected by valving between a depending inlet and an outlet for pumping liquid from the container and a limitedly movable gauge rod is disposed in spaced parallel relation to the plunger with means securing the plunger and rod together in adjustable longitudinal relation to thereby adjustably fix the plunger stroke for metering fluid dispensed per stroke of the plunger.

Abstract: A dressing and food dispenser which is adjustable for quantity of portion dispensed, useable with hot or cold thermos dressing and food containers which may be equipped with agitators; utilizing dual rack gears to first apportion then dispense.

Abstract: An improved liquid dispenser has two concentrically spaced cylinders with a pump plunger fitting the inner cylinder, an inlet check valve at the bottom of the outer cylinder, and an outlet check valve adjacent the top of the outer cylinder with a graduated stem extending upwardly from the plunger through a cap structure adapted to engage the open top of a liquid container. The pump plunger is restrained from moving upwardly out of the inner cylinder and a collar is adjustably mounted on the stem above the cap for setting the pump stroke as indicated by the graduations on the stem to thus provide a dispenser adapted to fit containers having a small opening therein.

Abstract: Apparatus for dispensing metered amounts of mercury and silver alloy, for the production of dental amalgam, is disclosed. The apparatus can dispense the silver alloy in either tablet or powder form and is provided with a stirring member in the silver alloy powder supply container to agitate the powder during the metering and dispensing thereof so as to alleviate the problem of clumping. The apparatus also has a member to adjust the amount of mercury being dispensed and an element for locking the adjusting member securely against accidental shifting out of position.

Abstract: Apparatus for use in predetermining volume of liquid to be withdrawn from a container having a top, bottom and side walls includes a conduit insertable through an opening in the top wall which is selectively shiftable within the container for providing a liquid conducting passage. A measuring device is positionable adjacent an external portion of the conduit for displaying liquid volume withdrawable through the conduit when it is linearly shifted to a preselected position.

Abstract: A pistol applicator has a piston handle and a hand hold which are drawn towards each other during application and a piston cylinder housing. An adjustable dose regulating device is provided including a dose regulating wheel fixed to the cylinder housing and rotatable about the longitudinal axis of the cylinder housing and a plurality of notches in the dose regulating wheel each having a different radial extent. An outwardly tapering stepped cross piece is attached to the piston handle and is insertable in one preselected notch at a time, wherein one step of the crosspiece is engageable with the preselected one of the notches upon operating the applicator piston to limit the stroke thereof and thereby regulate the dose applied.

Abstract: A device for supplying a toner to a developing unit provided in an electrophotographic copying machine in which a toner supplying member at the bottom of the hopper may be rotated only in one direction, which may be manually operated or driven in association with a prime mover during copying operation. There is provided a rockable member attached to a protruding portion of the supplying member by a one-way clutch, which is rockable about an axis coaxial with the supplying member, the one-way clutch being adapted to be engaged with the rockable member only in the rotational direction of the supplying member.

Abstract: The present invention relates to a device for dispensing adjustable volumes of a liquid, comprising a stopper adaptable on the neck of a flask, which incorporates a device with valves; a calibrated cylinder which is mounted in the stopper and which comprises, near its free upper end, a fixed, outwardly projecting, annular stop; a calibrated cylindrical plunger adapted to cooperate with said calibrated cylinder; a body for actuating the calibrated plunger, internally defining a first cavity in which a threaded adjusting shaft is adapted to be housed, which shaft may modify the vertical position of a nut; a digital display system mounted in the upper part of the threaded shaft; a member for driving the shaft in rotation, and a connector is provided to connect the actuator body with the upper part of the calibrated plunger. The invention finds particular application in laboratory equipment.

Abstract: An on-site aggregate measure having a hopper with at least one fill level indicia representative of a predetermined measure of aggregate and including at least one opening for the introduction and emptying of aggregate together with means for emptying a fill of aggregate in fractional parts.

Abstract: The invention provides an adjustable diluting device comprising a casing and a tapered tubular element or nose member, a volume-adjustment mechanism coupled with an indicator assembly, and a plunger unit movable in said casing; the plunger unit comprises a first piston having a central recess, a second piston adapted to slide in the recess with the interposition of a frictionally mounted joint, a sleeve for controlling the first piston, a shaft for controlling the second piston adapted to slide inside the sleeve, and a push button fixed to the upper end of the control shaft and adapted to cooperate with the upper end of the sleeve. The invention is particularly applied to the mixing of a determined volume of a liquid sample and of a determined volume of a liquid diluent.

Abstract: Our invention relates to a wheeled fertilizer or other granular material spreader which is pushed over the area or surface to be treated. The granular material is dropped through feed openings onto the surface to be treated, the metering of the granular material being accomplished by placing the metering blade in a desired position or positions depending upon what particular granular material is being discharged from the hopper.

Abstract: The invention relates to a device for spreading distributable material, more particularly, fertilizer in granular or powdery form, said device comprising a hopper having at least one outlet port and a spreading member connected herewith and a dosing member to be adjusted for defining the passage of each outlet port, a control-mechanism moving the dosing member into a position in which the outlet port is closed or into the adjusted position; the invention has for its object to spread said material accurately and provides screw means operative between the dosing member and the control-mechanism for very sensitive adjustment said dosing member.

Abstract: A micropipettor having an adjustable stop threadedly engaged with an internal reciprocal plunger assembly for defining the stroke length of the plunger and thus of a fluid displacing piston that is attached to the plunger assembly. The adjustable stop is manipulated by operable connection with a volume adjustment knob provided on the outside of the micropipettor body. The plunger carries a coarse volume indicating scale and the volume adjustment knob is provided with a fine volume setting scale. Accidental changes in volume adjustments are avoided by two types of automatic locks: a frictional engagement of the internal volume adjustment mechanism unless the plunger is deliberately placed in a certain position by the operator, and a detent lock of the volume adjustment knob unless the operator deliberately depresses it.

Abstract: A multiple dose paste dispenser has a frame with a handle secured thereto. A piston rod having a piston on the front end is mounted in said frame for longitudinal movement. A cartridge is secured to the frame in alignment with the piston. A gripping ring is slidable along said rod and grippably engages the rod when it is tilted with respect to the rod. A return spring urges the ring in a direction away from the piston. A trigger pivotally mounted on the frame is adapted to tilt the ring and advance the ring, the rod and the piston into the cartridge. A stop is pivoted to the frame for movement from an inoperative position to a position for limiting the advance of the ring. Advantageously the stop is stepped to provide for at least two different stop positions.

Abstract: An apparatus for dispensing accurate volumes of liquid drawn from a reservoir to which the apparatus is attachable comprises a plunger for drawing the liquid past a non-return inlet valve into a barrel on a forward stroke of the plunger in the barrel and for expelling the liquid past a non-return delivery valve on the return stroke. The forward stroke of the plunger and hence the volume of liquid drawn in is limited by a coarse setting provided by an abutment adjustable in discrete increments along the plunger co-operating with one side of a fixed abutment on the barrel. The return stroke of the plunger, and hence the volume of liquid expelled, is limited by a vernier setting provided by a further abutment rotatable in discrete increments about the barrel and co-operating with an opposite side of the fixed abutment.

Abstract: A liquid metering dispenser is actuated by a trigger. The trigger releases a valve rod which is spring actuated to close a fluid pressure inlet, opening the discharge outlet of the dispenser to release a stored measured charge of liquid by operation of a spring actuated piston. The trigger is cocked by drawing the valve rod to close the discharge valve and open the liquid pressure inlet; the liquid under pressure enters the storage chamber, compressing the piston spring until it strikes an adjustable stop. The piston and spring assembly is readily removable for cleaning and servicing.

Abstract: A measuring and dispensing device for granular material has a container for the material with an outlet at the bottom and a plurality of dispensing compartments open at top and bottom fixed at the outlet. A barrier member and a closure member are reciprocable in unison across the tops and bottoms respectively of the compartments so that on movement of the members in one direction the barrier member closes the top of each successive compartment before the closure member closes its bottom, and on movement thereof in the opposite direction the closure member opens the bottom of each successive compartment before the barrier member opens its top. Control means are provided accessible from the exterior for selectively stopping the movement of the members at each position of respective registry with the successive compartments. The device can be adjusted to selectively fill and then dispense the compartments maintained normally empty, or to selectively dispense the compartments maintained normally full.

Abstract: A device for accurately dispensing a volume of fluid that is predetermined by limiting the outward travel distance of a plunger within a fluid chamber. The plunger limit stop is attached to a scale post having raised indicia lines and is adjustable therealong by a detent engagement wherein the limit stop is selectively positioned to engage one of a plurality of notches formed on the scale post between its volume indicia raised lines.

Abstract: A material dispenser using a deformable tube through which the flow of material is controlled is described. The deformable tube is selectively mounted to expose a pinch region to a pressure element having a predetermined shape. The deformable tube is selectively supported to enable precise control over tube constriction for accurate material flow control. A micrometer stop is conveniently mounted to regulate the size of the tube restriction. Automatic and repeated actuation of the dispenser is obtained by locating the pressure element as a piston in a cylinder. Various deformable tube embodiments are described to reduce tube wall stresses for longer operating life and enable both positive closure and opening of the deformable tube.