Abstract: A teaching machine system for displaying selected frames from a multiple-frame film strip wherein instructional material is contained on a first portion of each frame and code indicia including an excursion instruction is contained on a second portion of each frame. The code indicia associated with a frame being displayed render selected answer keys operative whereby a student selects an answer, and establish an initial counting state in a counter, which is counted down as the frames of the film strip pass a projection gate in proceeding to the next frame to be viewed. When the counter reaches a predetermined minimum counting state, dependent on the particular answer key selected by the student, the film strip is stopped and the next frame is viewed. An alternate mode of operation is provided wherein fixed excursions of a predetermined number of frames occur for each answer key. A dynamic reading method is employed for reading code indicia on the film strip to reduce the number of photodetectors required.

Abstract: This invention provides an absorbent composition comprising a reactant product of (1) amines or amides; (2) carbon disulfide, or carbonyl sulfide; (3) polyvalent metal ions; and, (4) a water-dispersable reactive polymeric material. A water-soluble silicate may be present as an optional material during the reaction. The reaction is carried out in an alkaline water solution or dispersion, and the above noted absorbent composition then precipitates.The resulting absorbent composition may be used as an ion exchange medium; to form lakes by absorption of dyes soluble or dispersable in water or water-immiscible solvents; to absorb from water solutions or dispersions of toxic or otherwise objectionable materials such as chromates, lead or mercury salts, etc.

Abstract: The reset circuit of a fault indicator is disabled to prevent automatic restoration of the movable target from fault indicating position where it can be observed and manually rest. A manually operable switch is connected across the reset ciruit and its contacts are closed by permanent magnet means or by manually operable switch means.

Abstract: A stuffing pump for handling a food product having a helical gear metering pump with means for removing air from the material moving through the metering pump and a feed conveyor in a hopper continuously feeding material to the metering pump. The feed conveyer includes a pair of counter-rotating augers in the bottom of the hopper. Independent and infinitely variable drive mechanisms are provided for the metering pump and the feed conveyer.

Abstract: A miniature electrical switch including a housing having a cover and a base plate and a switching assembly within the housing. The switching assembly includes a switch actuator, a ball contactor and a spring, together with a contact assembly. A plurality of contacts are engageable by the ball contactor to electrically interconnect contacts connected to a circuit. The contacts are arranged to enable the switch to be used in single-pole double-throw, double-pole double-throw or multiple-pole double-throw modes.

Abstract: A machine for removing skin from animal carcasses, and particularly hog carcasses, which includes an upstanding inclined from the vertical rotatable cylinder having an axially extending slot, a skin clamp at the slot for clamping a portion of the skin to the cylinder, a stationary peel bar positioned adjacent the cylinder and against which a carcass engages during the skinning operation, a fluid drive for closing the skin clamp and rotating the cylinder, and spray nozzles for cleaning the cylinder and peel bar following a skinning operation. A system is provided for automatically handling the carcasses moving to and from the machine.

Abstract: A holder for an orthodontic tying attachment that is disc-shaped and which holder includes a pair of panels joined at one edge between which the attachment is placed and in alignment with a opening in the panels at the joined edge through which the attachment may be forced when removing the attachment from the holder. A plurality of attachments may be carried by the holder which facilitates the mounting of attachments onto bands.

Abstract: Apparatus for removing and recovering meat from trimmed and untrimmed bone fragments comprises a hollow sleeve open at one end for receiving a quantity of bone fragments to be processed. Hydraulic cylinders raise the sleeve to bring one end into engagement with an extrusion block, and a piston slidably disposed at the other end of the sleeve is advanced initially by relatively high speed jack cylinders and finally by a low speed ram cylinder to compress the bone fragments against the block. The extrusion block includes a plurality of concentric annular recesses and interfitting extrusion rings which form an inwardly facing foraminous surface through which meat recovered in fluid form as a result of the compression process passes. The rings are slidably received within the recesses to facilitate removal for cleaning, and are partially extended from the recesses by a pneumatic cylinder after each compression cycle to dislodge bone residue from the foraminous surface.

Abstract: A gravity powered timing device is described which is of generally rectangular cross-section, the perimeter portions of which include a plurality of inclined track sections which successively communicate with each other to define a descending track of predetermined finite length. A free rolling ball is adapted to travel downwardly along such track and, at the terminal portion of each track section, is prevented from achieving undesired high speed by collision with the wall portion for the next successive track section. The terminal portion of the lowermost of said inclined track sections is in overlying relationship with a sounding plate, whereby a ball travelling successfully downwardly along the track will be discharged onto the sounding plate and thereby produce an audible signal. If desired, a similar sounding plate can be provided at the upper end of the device, thereby enabling a repeat of the timing cycle to be accomplished by simply inverting the device.

Abstract: A lock-down mechanism for a hinged hatch cover having a lock strap with an arm portion projecting laterally over a hopper car roof on the side of the hatchway opposite the hatch cover hinge. An operating lever is pivotally mounted at one end on an upstanding support on the car roof and positioned adjacent one side of the arm portion when the hatch cover is closed. A pawl is pivotally mounted on the operating lever and has a foot portion and a latching portion. The foot portion engages the top side of the press-down arm when the locking mechanism is in its closed condition with the hatch cover fully closed. The latching portion of the pawl engages a formation on the lever support when the mechanism is in locking condition, this latter engagement resulting from an over-center or toggle-like action.

Abstract: A method for stuffing meat material into loaf molds for processing in a continuous loaf processing system where the loaf is open at one end and closed at the other end, and which includes the steps of moving the mold onto a stuffing horn until the stuffing horn is positioned at the closed end of the mold, discharging pressurized meat material from the stuffing horn and causing the mold to be filled and to be moved off the stuffing horn, controlling the return of movement of the mold off the stuffing horn, and ending the discharge of the meat material from the stuffing horn when the mold is filled. The apparatus includes a stuffing platform having a mold supporting carriage movable therealong, a stationary stuffing horn, control means for initiating and ending discharge of meat material from the stuffing horn, and means for controlling the rate of stuffing.

Abstract: A rotary regenerative air preheater has a preliminary heating stage for the cold air, before it reaches the regenerative mass, constituted by recuperative heating surfaces provided within the ducting which brings the cold air to the regenerative mass and which are heated by exhaust gas which has passed through the regenerative mass but has lost least heat to that mass. The surfaces take e.g. the form of tubes passing through the channel and gas is guided into these tubes by a gas-catching wing extending to close to one face of the regenerative mass.An embodiment of each of a rotating-and a stationary-mass preheater are described.

Abstract: This invention provides an improved pigment composition which blends readily with hydrophylic and oleophylic vehicles, and which can be manufactured with highly reproducible color value.A colorant, typically a dye or dye intermediate, is absorbed on an insoluble dithiocarbamate salt of a polyvalent metal. The dye-containing salts produced in this manner provide a pigment which is non-bleeding in hydrophylic or oleophylic vehicles. Aluminum and zirconium salts are the preferred salts, aluminum dithiocarbamate salts providing transparent pigments, and zirconium dithiocarbamate salts providing opaque pigments.Pigment materials of this invention can be produced by absorbing dye or dye intermediate on a dithiocarbamate metal salt in an aqueous suspension thereof. Azo dye intermediates can be diazotized and coupled in an aqueous suspension of dithiocarbamate metal salt, in accordance with this invention.

Abstract: The apparatus includes a liquid crystal cell having transparent front and back walls with transparent electrodes on their facing sides and a liquid crystal material between the walls. The electrodes are segmented into matrix elements according to the cumulative pattern of all characters desired to be displayed or recorded, and are electrically addressable in response to selection circuitry. The front wall is in the form of a fiber-optic plate comprising a plurality of parallel arranged optical fibers. The apparatus is particularly useful to display or record measurement data, such as from a weighing device.

Abstract: Apparatus for weighing goods or articles which includes a movement and indication assembly having a movement means and an indication means driven by the movement means wherein the movement means exhibits hysteresis between weighing operations involving increasing and decreasing weights of goods, a weighing platform on which the goods or articles are received for the weighing operations, a bar linkage mechanism between the weighing platform and the movement means, and a counterforce means connected to the bar linkage mechanism. An extension member is provided in the bar linkage mechanism to eliminate the hysteresis effect in the movement means to reflect greater accuracy in the indication means.

Abstract: A laminated anode including a layer of sacrificial metal and a layer of impermeable material. The laminated anode is utilized to protect a metal mold from corrosion where the mold is used for processing a corrosive meat material.

Abstract: An assembly of loaf molds defining a magazine, including a pair of vertically extending and horizontally spaced forks and a plurality of horizontally extending and vertically spaced molds secured near opposite ends to the forks. Wheels are mounted on the forks to coact with support rails along which the magazine may be driven. Driving pins are also mounted on the forks to coact with a suitable driving mechanism.

Abstract: A dual compartment package for containing reactive substances in separate compartments which is suitable for being produced continuously from a single web of film material, and a method for making same. The web of film is formed into a tubular member having a first compartment which assures a generally circular cross section when filled, and a second compartment formed inside the first compartment. The second compartment is attached to the sidewall of the first compartment such that a single sealing formation through three plies of the film material closes both compartments longitudinally. The method provides for a simplified formation of a series of said packages wherein only a single seal forming apparatus is utilized.

Abstract: A package display and support rack for mounting on shelves formed of wire rods found in refrigerators with glass doors such as used in convenience food stores. The display racks are inexpensively assembled from readily available or easily manufactured components and include forwardly projecting support feet attached at their heels or rear ends to the bottom ends of upright side members of the rack. The support feet have clamps on their distal ends for clamping attachment to at least one wire rod of a shelf.

Abstract: An improved washing machine of simplified construction including means for stabilizing same during the fluid extraction or spin portion of its operation cycle. When a spin basket therein rotates at high speed the stabilization means counteracts the imbalance in the basket caused by clothes placed therein. The means for stabilizing the washing machine includes in combination: a fluid retaining jacket surrounding the spin basket and in fluid communication therewith for obtaining fluid extracted therefrom and retaining a portion therein by centrifugal force; and a plurality of flexible casing mounting support bars generally vertically positioned in spatial relation inside the washing machine casing adjacent its external corners. Each of the bars is rigidly mounted at its top end to the casing inwardly adjacent the top thereof and extends substantially freely downwardly through the casing.