Abstract: A bur grinding machine especially adapted to grind dental burs and including a turntable supporting a plurality of similar workheads having collets to support bur blanks; a plurality of grinding units mounted on a stationary base in circumferentially spaced locations around the periphery of said table and respectively operable to perform different grinding operations in sequence upon the heads of bur blanks; means to index, rotate, and advance the collets of the workheads automatically at each grinding unit to form a plurality of teeth upon the bur blanks; means to index said table to advance the burs in the workheads to the next grinding unit; means to feed and accurately position bur blanks within the collets of the workheads; and means to control the cycle of the machine throughout.

Abstract: A teaching device to acquaint dental students and also patients with endodontic root canal techniques performed by dentists and utilizing an electronic oscillator having a scale reading in electric current measurement and a pair of electrical circuit conductors being connected at one end to the terminals of the oscillator and the opposite ends thereof respectively being connectable to one or more small diameter metal wires which simulate dental reamers and files which are movable in root canal-simulating passages of uniform diameter complementary to that of said wires and formed in a transparent model of a human tooth including a root and cusp thereon and mounted in a transparent enclosure in which the root portion of the tooth extends with the cusp of the model extending above the upper end of the enclosure.

Abstract: An operatory stool having an arcuate rest member supported above the seat by a pair of parallel upstanding support members pivotally connected to and between said rest and seat to permit lateral adjustment of said rest relative to said seat, and manually operable clutch mechanism on said rest member operable relative to the upper ends of said upstanding support members to maintain said rest member in a desired adjusted position relative to said seat.

Abstract: A hand-held instrument having a handle somewhat resembling a pistol grip depending from a horizontal frame having a slide on the forward end thereof to which a conventional hypodermic syringe is connected and including a tension spring connected to the rearward end of said slide for purposes of instantly injecting the needle of the syringe into flesh. The slide is held in its rearward, cocked position by a sear and the sear is released by means of the piston of a piston and cylinder unit, the piston being operated initially to release the sear from the syringe slide to effect injecting movement thereof. A flexible bulb is supported within the handle and a finger-engageable lever engages the bulb to force fluid against the piston to cause release of the sear and continued compression of the bulb operates a finger guided for movement against the outer end of the plunger of the syringe and forces the same in discharging direction immediately after the needle of the syringe has been injected into flesh.

Abstract: A carton set-up and loading machine including a magazine for a stack of flattened cartons, suction cups to pull lowermost carton onto one end of a conveyor having spaced perpendicular blades forming compartments to receive a flattened carton and, as traveling around a sprocket, the blades move from diverging to parallel relation to set-up the carton, cam and rotatable members fold side and one end flap at one end closed to receive products from a lateral guideway while conveyor is momentarily stopped. Additional cams and rotatable means fold the side and one end flap at other end of carton closed followed by adhesive being applied to outer end flaps at both ends of carton and pivoted power-operated plates close the same against the previously folded flaps to complete the package. Overall sensing and safety controls insure no jams or unfilled cartons from occurring. Weighing means to prevent short weight also are included.

Abstract: A collapsible easel for artists and the like to support canvases, artists' boards and otherwise comprising a horizontal frame member having an upright support extending therefrom, two pairs of legs respectively pivotally movable from compact positions extending from said frame member in the same direction as said support to positions extending downwardly from said frame member and at an acute angle to each other, and a pair of panels hinged suitably along one edge to each other, one panel being hinged to said frame member and positionable substantially horizontally to form a shelf and the other panel extending downwardly and inwardly to position the lower edge adjustably along the forward pair of legs to form a brace for said shelf panel and said panels being disposable in planar relationship and movable into overlying position along the front face of said upright support so as to overlie a painting or drawing supported by said support and thereby protect the same.

Abstract: A bur grinding machine especially adapted to grind dental burs and including a turntable supporting a plurality of similar workheads having collets to support bur blanks; a plurality of grinding units mounted on a stationary base in circumferentially spaced locations around the periphery of said table and repsectively operable to perform different grinding operations in sequence upon the heads of bur blanks; means to index, rotate, and advance the collets of the workheads automatically at each grinding unit to form a plurality of teeth upon the bur blanks; means to index said table to advance the burs in the workheads to the next grinding unit; means to feed and accurately position bur blanks within the collets of the workheads; and means to control the cycle of the machine throughout.

Abstract: A band type roll slicer comprising a conveyor to feed rolls along a path to an endless band type knife having one section supported above said conveyor and parallel thereto, power means to drive said knife to move said section continuously between opposite sides of said conveyor, and a yieldable pressure unit mounted above said section of said knife and engageable with the upper surfaces of rolls upon said conveyor to apply limited pressure thereto while being sliced by said knife entirely through said rolls in parallelism with the bottom surfaces thereof so that the top and bottom sections of the rolls when completely sliced therebetween will be superimposed in vertical registry and the bottom sections will be of uniform thickness throughout the entire area thereof.

Abstract: A machine for slicing rolls between the tops and bottoms thereof while arranged in clusters of a predetermined number of separably adjoined rolls by cutting into one side of the rolls in such clusters along but spaced from a longitudinal joint between adjacent rolls in said clusters. The slicing is effected by a plurality of disc type knives supported on the lower ends of vertical spindle shafts supported in a cutter head frame mounted above a conveyor which feeds clusters of rolls to said knives, said spindle shafts being rotatably supported within bearings in a plurality of bearing blocks adjustable between opposite sides of said cutter head frame by coengaging worm and worm gear means operable readily by manually-engageable members supported adjacent the forward end of said cutter head frame.

Abstract: A foot control for a dental unit having a control unit for the delivery of power to operate dental equipment, and including a plunger to effect a range of speeds for the equipment, said control unit being operated by an actuating member which engages said plunger to depress it, and said actuating member being universally actuated by a pedal selected from a series thereof arranged in spaced relationship upon a base and extending radially from the base and capable of being moved either pivotally in a horizontal plane or depressed vertically downward to actuate said actuating member in one direction to depress the plunger of said control unit to a degree corresponding to the speed desired for the dental equipment.

Abstract: A synthetic material drumstick of the type commonly employed in the playing of various percussion instruments such as drums, cymbals, and the like, wherein the drumstick is fabricated from fiberglass reinforced polyester resin rod stock material machined to a specified dimensional configuration, which configuration, in combination with the material employed, provides a drumstick of significantly high durability characteristics.

Abstract: A bag filling and sealing mechanism having vertical tubes over which elongated sleeve-like bags are positioned to receive a stack of similar patty-type products, a composite plunger unit movable into the upper end of a bag containing a guantity of said products, vacuum mechanism operable to apply vacuum to the interior of said bag while said plunger unit is withdrawn from the open upper end of said bag, a plunger coaxial with said plunger unit positioned with the lower end against the top of the stack of products in said bag while vacuum is still applied to contract the upper end of the bag around said plunger, transfer mechanism to move the evacuated bag to clipping mechanism to apply clips to the contracted end of the bag after said plunger has been fully withdrawn, heat-shrinking mechanism extending around said clipped bag, while supported at the upper end, and movable vertically between opposite ends of said bag to shrink it tightly around the contents thereof, and additional transfer mechanism operable t

Abstract: A roll slicing machine in which disc knives are fixed to one end of vertical shafts inserted in driving sleeves supported in bearing blocks on the machine is provided with a chuck unit connected to the upper end of the driving sleeves, above the bearing blocks, and said chuck units each comprise a head secured to the upper end of said driving sleeves and having a bore complementary to the upper ends of the knife shafts. The upper ends of the knife shafts are provided with a notch in one side thereof which is wider and deeper at one end than the other and said heads are provided with a transverse bore which receives a plug for axial movement of a frusto-conical section on said plug into and out of wedging engagement with said notch in said knife shaft with which said secton is substantially complementary in shape. Several embodiments of actuating structures are provided for moving said plug into and out of said wedging engagement of the frusto-conical sections with said notches in said knife shafts.

Abstract: Apparatus on a round bale forming machine for wrapping a strand of binding twine around a round bale of crop material prior to discharging said bale from the machine. Said apparatus includes a strand directing arm pivotally supported upon a fixed member adjacent the forward end of the machine for movement of the outer end of the arm by powered actuating mechanism between opposite sides of the machine to effect a roving of the twine feeding from said outer end of the arm around and between opposite ends of a round bale to place tension upon said twine as fed from said outer end of said arm, and including an auxiliary spring connected to said arm and operable to produce supplemental tensioning force upon said outer end of said arm as the same approaches the outer extremities of the path of movement thereof.

Abstract: Apparatus on a round bale forming machine for wrapping a strand of binding twine around a round bale of crop material prior to discharging said bale from the machine and including a movable strand directing arm to effect roving of said strand as applied to a bale. Electrically operated power means are connected to said arm to effect movement of the outer end thereof between opposite ends of said bale and control means for said power operated means are mounted remotely therefrom such as adjacent the seat of an operator on a tractor connected disengageably from said bale forming machine.

Abstract: A mobile combine having longitudinally extending rotor and concave threshing and separating members and a grain pan beneath the threshing and separating members to receive threshed and semi-threshed crop material incident to transmitting said material to a sieve mechanism. In order to prevent uneven build up or deposit of said material in localized areas upon the grain pan, deflecting members are provided in several different embodiments or arrangements which are fixed to the threshing and/or the separating members, all having the common objective of deflecting material discharged from the threshing and separating areas of the grain pan which normally have low accumulation and thereby tend to cause substantially even distribution of said material upon the grain pan.

Abstract: A machine in which eviserated dressed poultry carcasses from which leg shanks have been removed from the legs are mounted upon a conveyor by clamping member thereon which is driven to move each carcass through all separating stations of the machine to sequentially and automatically remove (1) the wing tips from the intermediate wing sections, (2) the intermediate sections from the wing stubs, (3) the wing stubs from the vertebrae (back), (4) the whole breast from the vertebrae, and (5) the thighs and legs from the vertebrae in a manner to also remove the "oyster" from the vertebrae, whereby the tail and vertebrae are removed from the machine to complete the dismemberment of the carcass into all the normal commercially available pieces.