Abstract: A switching mechanism is disclosed which may be either a single pole or a multiple pole switch. Actuator means is provided to actuate first and second contact means between open and closed circuit conditions. This actuator means is shown as a lever which acts on an actuable portion of a contact blade or directly moves a contact portion into and out of engagement with an individual contact. For economy the actuator means lever may be unitary with a housing by means of a unitary hinge which not only permits movement of the lever but also provides a resilient force in first and second generally perpendicular directions. This resilient force is used to establish the contacts in a closed circuit condition and is also resisted by a detent so that the switch remains in that selected circuit condition. When the switching mechanism is constructed as a multiple pole switch, then a common conductor is provided which has individual contact portions actuated by a plurality of levers for an economically produced switch.

Abstract: Particulate material, hereinafter called sand, is used in a sand article, such as a mold article, for foundry purposes such as a green sand mold and sand core consisting of sand and a binder and is hardened in a molding box by sucking a catalyst gas from a catalyst gas source through the molding box and the sand article. The molding box is continuously exposed to the action of a reduced pressure source and normally evacuated to the atmosphere. When the pressure has been reduced to a predetermined pressure less than atmospheric pressure, the catalyst gas is briefly supplied to the molding box under slight increase of the absolute pressure, whereupon the molding box is evacuated to the catalyst gas source until the pressure therein is reduced to the predetermined pressure to recycle the unused catalyst gas leaving the molding box to the catalyst gas source.

Abstract: A receiver and decoder is disclosed wherein the receiver may be used as a remote control receiver in conjunction with a transmitter transmitting a carrier modulated with an encoded data train of first and second modulation frequencies for first and second modulation patterns. A third modulation pattern may be established by providing successive portions of the first modulation signal and then the second modulation signal during a given time. If the receiver is on the same carrier frequency and is set to receive the same modulation pattern sequence as in the encoded data train from the transmitter, then the receiver has an output which may be used to control some remote load. This may be a garage door operator to open a garage door, for example.The decoder in the receiver is responsive to the modulation signals and a signal discriminator discriminates among the three different modulation patterns or logic conditions of bits.

Abstract: A level meter circuit for indicating a level of input signal over a wide dynamic range, comprising an amplifier of relatively high amplification factor having input terminal means to which an input signal is supplied and output terminal means to be connected to a level meter and negative feedback means including a feedback resistance to feedback an output signal from said output terminal means to said input terminal means, said negative feedback means characterized by further including non-linear impedance means connected in parallel to said feedback resistance and having such characteristics that when said output signal from said output terminal means is below a predetermined level said non-linear impedance means has a substantially infinite impedance and when said output signal from said output terminal means reaches said predetermined level said non-linear impedance means has a predetermined impedance.

Abstract: A double disc refiner for wood products solves the problems caused by steam generation in the refining space between the feed end disc and another disc. This problem is solved by the use of a separate steam removal channel connected to an inlet passage closely adjacent the feed end disc and at a location between the feed end disc and a means for feeding wood materials into the inlet passage at one end thereof. The means for feeding wood materials feeds the materials through the inlet passage and thereafter into the refining space through openings in the feed end disc.

Abstract: Apparatus for the accurate pipetting of small liquid volumes for sample and reagent mixtures which include a pipette with a point at least partly fitted in a thermo-regulated space in one single pipetting-incubating station in such a way that at least the liquid container of the pipette is in the thermo-regulated space. Sample reagent or reaction mixture test tubes, and when necessary, also, a shaker and/or a storage section or a container are, also, fitted in the pipetting-incubating station and are thermo-regulated at the same temperature so that the pipetting, shaking and storage of samples and reaction mixtures can be carried out in a centralized manner within one single pipetting-incubating station, in conditions thermo-regulated in an exact predetermined way.

Abstract: A rotary electric field intensity measuring device comprising a grounded housing, an amplifier mounted within said housing and electrically connected to an external recording device, an electric motor mounted within said housing and having an output shaft, said motor being adapted to be connected to an external power source, a rotary grounded shielding conical electrode means having a rotary shaft connected to said output shaft of the motor for rotation therewith and alternating voltage inducing means and a shielded stationary conical electrode means secured to said housing within said shielding rotary electrode means in spaced relationship to the latter and having alternating voltage inducing means in cooperation with said alternating voltage inducing means of the rotary electrode means.

Abstract: This invention generally relates to a lead-acid storage battery comprising positive plates having the characteristic of both paste type and clad type plates and pasted negative plates which are alternately arranged and separators each disposed between the adjacent positive and negative plates. The positive plates each comprise a grid or substrate having spaced longitudinal members of electrically conducting material and spaced latitudinal members formed integrally with the longitudinal members, the latitudinal members having the thickness smaller than that of the longitudinal members. The latitudinal members may be omitted if the substrate can be filled with active material without any latitudinal members. Each of the positive plates comprises pasted active material filled in the grid; and active material holder composed of porous insulating sheets mounted on active material.

Abstract: A golf putting device is disclosed for practicing putting a golf ball toward a hole by a player with a golf putter club having a putter shaft and a putter face. The invention comprises an alignment member being mounted to the putter shaft to extend in front of and being substantially normal to the plane of the putter face. A reflector element is mounted to be behind the plane of the putter face. The relative position of the alignment member and the reflector element enables the player to observe the alignment member being simultaneously superimposed over the ball and over the reflection of the hole in the reflector element to establish the putter face to be normal to a line extending between the golf ball and the hole. The forward extension of the alignment member is superimposed over the golf ball during substantially all of the putting stroke enabling the player to practice maintaining the putter face normal to the line extending between the golf ball and the hole.

Abstract: A multiplexer transmitter terminator is disclosed for connection to a multiplexer transmitter in a system having a plurality of multiplexer transmitters connected on a common communication line. Each of the multiplexer transmitters is assigned a time period for transmission relative to a multiplexer time clock. The improvement includes a counter circuit connected to the multiplexer time clock for providing a counter output upon counting a preselected number of clock pulses which output corresponds to the time period assigned for transmission of the multiplexer transmitter. A line receiver is connected to the communication line for providing an output upon detecting a predetermined period of signal absence on the communication line. The line receiver output is connected to the counter circuit to reset the counter after the predetermined period of signal absence.

Abstract: A multiplexer receiver terminator is disclosed for connection to a multiplexer receiver in a system having a plurality of multiplexer receivers connected on a common communication line. Each of the multiplexer receivers is assigned a time period for reception relative to a multiplexer time clock. The improvement includes a counter circuit connected to the multiplexer time clock for providing a counter output upon the clock counter counting between two preselected clock counts which correspond to the time period assigned for reception of the multiplexer receiver. A line receiver is connected to the communication line for providing an output upon detecting a predetermined period of signal absence on the communication line. The line receiver output is connected to the counter for resetting the counter after the predetermined period of signal absence. The counter circuit is connected to the multiplexer receiver for enabling reception from the communication line only during an output of the counter circuit.

Abstract: An accentuator circuit for underwater acoustical devices having a transmitter circuit and a receiver circuit each connected to underwater unit means which interchanges electrical signals and acoustical wave fronts in the water. The receiver circuit provides receiver outputs in accordance with distances traversed by the reflected wave fronts. The wave fronts reflecting from the bottom of the body of water produce a series of receiver outputs within an interval of time resulting in a bottom smear in the display in the prior art units. The invention includes an accentuator circuit connected to the receiver output comprising a series connected diode which substantially eliminates the bottom smear encountered by the prior art units enabling the resolution of an object which occurs within the aforesaid bottom smear. Consequently, objects such as fish which are located in close proximity to the bottom of the body of water can be readily detected.

Abstract: Magnetic head adjustment means for a magnetic tape machine, comprising a magnetic head mounting plate on which a magnetic head is securely mounted, said magnetic head mounting plate being pivotally movable about contact means to slidably extend through a base plate and engage said magnetic head mounting plate in a plane in which a head gap is contained. Depression means is provided to depress said contact means whereby said magnetic head is adjusted in its vertical position. Vertical position adjusting screw means adjusts the depression of said depression means. Inclination adjusting means is also provided to engage and pivotally move said magnetic head mounting plate whereby said magnetic head is adjusted in its inclination in a magnetic tape running plane.

Abstract: A door operator is disclosed which has a motor connected to open and close a door; for example, a garage door and a lamp is provided to illuminate the interior of the garage. Motor and lamp energization circuits are provided as controlled by switches; for example, a push button switch or a radio controlled switch. An alarm circuit is provided which may be a security alarm; for example, a burglar alarm or fire alarm. The alarm circuit is enabled when the door operator is not being used and the alarm circuit is disabled automatically whenever the door operator is being used. A time delay means is provided to maintain the lamp energized for a time delay period after the door has closed, and while the lamp is energized the alarm circuit is disabled, but as soon as the lamp is extinguished then the alarm circuit is enabled or armed.

Abstract: The invention is a clip assembly for use in a muffled kiln car suitable for use in a tunnel kiln. The clip assembly enables tall baffle plates to be used without these becoming displaced during travel through the kiln. The assembly includes a swivelable block mounted on the base or shelf of the kiln car and having a groove to receive the corner of the baffle plate. The groove has a tapered forward face having a preferred angle of 27 degrees and a wedge of ceramic material is provided to co-operate with the tapered wall and wedge the base of the baffle plate in position, preventing it from wobbling and becoming displaced or detached.

Abstract: A bubble-making apparatus which includes in combination a container for containing a bubble-making solution. A paddle wheel with blades is rotatably mounted to the container walls for movement in a circumferential path into and out of the container. The blades have a flat surface extending generally transverse to the direction of the circumferential path of travel. Openings are located in the end portions of each of the blades providing means for producing a bubble from the bubble-making solution. Relative air flow producing means are provided for exerting an air force against the flat surface of each of the blades in a direction which is transverse to the flat surface and to the extent of the pivot means, to cause rotation of the paddle wheel as aforementioned. Also disclosed are games including the steps of making a bubble and blowing the bubble from the place where made to a designated destination.

Abstract: A disengage mechanism for a gear drive including rotatable drive and driven members with one of the members having first splines. A drive actuator having second splines and being connected to rotate with one of the members and axially movable with respect thereto between first and second positions. In the first position the first and second splines are engaged and the drive and driven members are connected to rotate together and in the second position the splines are disengaged and the drive and driven members are disconnected. First means are provided for moving the drive actuator to the first position and second means move the actuator to the second position. The first means include a spring which constantly urges the drive actuator to the first position and the second means comprises a rotatable cam member which positively engages the drive actuator to move it to the second position.

Abstract: A switch mechanism is disclosed which is readily adaptable to a multiple pole switch mechanism wherein a removable card is supported in a housing. First and second contacts make up a switch pair and are mounted in the housing for mutual cooperation with the first contact having a mounting portion, a movable contact portion and a movable actuable portion. The removable card provides a selective actuation means to actuate the first and second contacts between open and closed circuit conditions. The card has abutment means to engage the movable actuable portion of the contact blade or blades. Also, the card has alternative areas which do not actuate respective ones of the contacts and this may be provided by apertures in the card so that no material of the card is present to engage the contact blade actuable portion. Accordingly, either open or closed circuit conditions may be achieved.

Abstract: This invention relates to a detector for detecting the state of electrically non-conductive or substantially electrically non-conductive fluid, such as its flowing velocity, direction, composition or pressure, comprising a transducer to generate an electric signal responsive to said state of said fluid, said transducer having at least one ionizing area exposed to said fluid and said electric signal appearing as variation in conductance across said ionizing area, an amplifier to amplify said electric signal from said transducer, having a high input impedance and a low output impedance, and means to shield said transducer and said amplifier.

Abstract: A wall panel including in combination first and second generally parallel and spaced end members each having a channel shaped cross section. In the normal orientation of the wall panel, the end members are positioned horizontally. First and second positioning tabs are located on opposed end portions of each of the first and second end members. First and second generally parallel and spaced side members are provided and in the normal orientation of the wall panel these side members are located in a vertical position. The first side member has a channel shaped cross section and has opposed ends thereof engaging the first positioning tabs on the first and second end members and they are fixedly secured thereto. The second side member has a box shaped cross section and has opposed ends thereof engaging the second positioning tabs on the first and second end members and they are fixedly secured thereto.