Abstract: A bottom silo unloader is disclosed in which a tapered sweep auger has its inner end of largest diameter supported for rotation about a transverse vertical axis at the center of a silo so that it sweeps over the silo floor as it is also rotated on its longitudinal axis to feed material to a center-located hopper therebelow with which a discharge auger communicates. The outer smaller end of the sweep auger is spaced off the silo floor and unsupported other than through the driven inner end. In its specifically disclosed form the tapered shaft of the sweeper auger is composed of three equal length sections of constant diameter, the diameters of which are progressively increased from shaft section to shaft section in the direction of the supported inner end of the sweep auger.

Abstract: A battery powered load survey recorder for measuring electrical loads and providing a magnetic tape record of data with time reference signals in a format which is compatible for use with available data processing apparatus includes a data recorder circuit serving as a signal source for a data head of the recoder for recording the data, and a time recorder circuit serving as a signal source for a time head of the recorder for recording the time signals, current flow over the two recording heads being effected in a series arrangement to provide NRZ1 recording with reduced current drain, and the direction of current flow in each head being controlled only by it associated signal source.

Abstract: The tool shanks of an agricultural implement such as a cultivator or chisel plow are removably fixed to assemblies which include a holder pivotally connected to the rear side of a mounting member. The mounting member is recessed on its upper side and provided with an overlying clamp arm by which the assembly is affixed to the tool bar of the implement. A tension spring connected between the mounting member and the lower end of the shank holder reacts against swing of the shank holder on its pivotal connection to the mounting member in use of the implement; and the mounting member and shank holder have aligned stops and abutments above and below their pivotal connection which limit the swing of the shank holder.

Abstract: A system for elapsed-time calculation is disclosed. The system employs a magnetic-striped card in conjunction with a stand-alone terminal for recording the coming and going of employees, along with other pertinent payroll data, directly on the magnetic strip. The elapsed-time calculation is cumulative, thereby allowing an employee to maintain a flexible work schedule and to receive credit for all time worked during a given pay period. The system features visual feedback to the employee whenever his card is used, so as to inform him of both the total time he has accumulated over the pay period and elapsed time for the most recent period worked. Further features include the elimination of large-scale terminal and/or remote computer memory, hard-copy back-up in case of system failure, and recyclable time cards.

Abstract: Apparatus for converting the variations in magnetic force between two magnets, one rotating and one non-rotating, into reciprocating linear motion of an associated device, said apparatus including a motor driven rotatable permanent bar magnet and a non-rotatable permanent bar magnet disposed adjacent thereto and mounted for linear movement, and having an actuator shaft attached thereto, whereby the alternately attracting and repelling magnetic forces between the two magnets are effective to reciprocate the actuator shaft.

Abstract: A hand trouble lamp with a one-piece molded hollow body of an impact-resistant elastomer open at both ends, and a rigid socket member insertable into said body through one end thereof. The socket member is made in two halves and may be completely bussed, as necessary, and connected to the conductor of a cord outside of the handle body and then inserted therein. A switch or an outlet receptacle or both may be included on the socket member, and both completely covered by the handle body to make it dust and oil proof.

Abstract: A right angle electrical plug is disclosed comprising a housing having a generally right angle configuration and formed with first and second hollow leg members. A plurality of inserts are assembled in the housing and secured in assembled relation without the use of any insert assembly screws, one of the inserts having the contact blades extending therefrom and there being only two screws necessary to hold the entire assembly together. Finger grip means such as oppositely extending flanges on said housing, are provided to be grasped by the fingers to facilitate removal of the plug from an electrical receptacle. The entire plug is formed of an insulating material such as a suitable plastic.

Abstract: Tire building apparatus including an intermediate radially expandable drum. Fluid pressure operated means are provided for effecting at least partial actuation of expanding and contracting means for the drum, and centering means are provided for maintaining the transverse center plane of the drum in a constant axial position during expansion and contraction of the latter. The fluid pressure operated means are incorporated with a pair of axially movable carrier means on opposite sides of the transverse center plane, and tire bead locating and supporting means are incorporated with each of the carrier means. Positive drive means are provided for axially moving the carrier means toward and away from each other for effecting in conjunction with the fluid pressure operated means actuation of the drum expanding and contracting means. Said positive drive means also serves to effect moving of the tire bead locating and supporting means axially symmetrically of the transverse center plane.

Abstract: A fail-safe timing circuit energizable in response to a starting signal for activating a system, such as an air conditioning system, includes a first switching circuit responsive to the request signal to activate the system to commence its operation tentatively, a time-out circuit responsive to the starting signal for generating a time-out signal after a predetermined time delay interval, a circuit responsive to a system variable such as the compressor oil pressure achieving a given desired value, for preventing the time-out circuit from generating its time-out signal, and a second switching circuit for causing the first switching circuit to de-activate the system in response to the time-out signal. As a result, the system is prevented from operating in an undesirable or unwanted manner should the system variable not reach the predetermined condition within the timing interval.

Abstract: A programmer includes an intermittently rotating drum, having thereon a series of actuators arranged in a pre-selected manner, for actuating in a predetermined order, a plurality of devices, such as fluid valves, each of which, when actuated, causes an operation to be performed. The drum is indexed by a stepping motor controlled by impulses of energy to a pilot valve in response to rotation of the drum. The actuators are removably mounted on the drum, so that the programming of the series of operations as to the order thereof, and duration of each, can be done quickly and easily, in advance. Individual valves can also be shut off when not needed.

Abstract: An electrostatic photocopy machine of the type which uses a magnetic dry toner is disclosed, wherein the toner particles are magnetically attracted to the surface of a developer roller, and thereafter deposited onto the charged image areas on one surface of a copy sheet. The developer roller is provided with an outer shell which is electrically non-conductive, thereby producing improved results in the copy.

Abstract: A multiple contact rotary switch comprises a rotatable staff to which an armature is electrically and physically mounted. A plurality of pins is spaced equi-radially away from the staff and around the staff, and the armature is arranged to move past each of the pins in turn as the staff rotates. The armature is flexible and spring-like, so that it maintains contact with any one pin for as long as it can, then springs forwardly to contact the next pin. A low power SPDT switch is thereby provided. The switch may operate extremely slowly, with no switch contact dead-break or teasing.

Abstract: A portable farm type elevating auger is disclosed supported on a truck having lower hinged frames one of which is connected to adjacent the feed end of the auger and the other to a roller carriage which moves along a track longitudinally of the auger underside as a cable connected between the two frames is wound or unwound from the drum of an operating winch to change the hinge angle between the frames and thereby the inclination of the auger. Pivotally mounted on the carriage is a spring biased latch to which the cable is attached. The spring is biased to rotate the latch when the tension of the cable thereon is removed as by the cable or a sheave breaking so that the latch engages the next track hanger as the auger starts to fall and thereby prevents its total collapse.

Abstract: A tire building apparatus comprising an expandible former embodying axially movable former expanding and contracting means to dispose the former in positions defining firm supporting surfaces of different radii, said expanding and contracting means ensuring symmetrical expansion and contraction of the former with respect to a transverse plane of the former. Axially-movable tire bead core locating and supporting means are disposed on opposite sides of said transverse plane. Further means, for example at least one rack and pinion mechanism connecting the two bead core locating and supporting means, is provided to ensure that axial movements of the two bead core locating and supporting means occur symmetrically with respect to said transverse plane.

Abstract: The present invention provides a suspension lighting fixture utilizing a chain suspension for the lamp holder, and which fixture is attached at its upper end, mechanically and electrically, to an outlet box and to conductors mounted in the ceiling, respectively. The length of the suspension chain is adjustable without requiring cutting or parting of the same. The installation may be expeditiously and cheaply made and the structure involves a minimum of materials. The invention utilizes as an essential element a hanger which is adjustable relative to the individual links of the chain employed and through which hanger the swing canopy may be clamped against the ceiling by cooperating screw threads on said hanger and on the swing canopy.

Abstract: A valve assembly including a gas valve having first and second redundant valve members which are individually operable to open and close respective inlet and outlet valve ports, and a pressure regulating apparatus interposed between the inlet and outlet valve ports operable to control gas flow to the outlet valve port when the first and second valve members are operated, and a leak detection apparatus for detecting a leak across one of the valve ports, including a pressure diaphragm operated valve which is maintained open responsive to gas flow through both the valve inlet port and the valve outlet port to permit gas flow to an outlet of the valve, the valve being operated to close in the event of gas flow for a predetermined time through only one of the ports indicative of a leak condition for the port.

Abstract: Apparatus including a stepping camera, partitioning means and an operating station is disclosed in which full size images of copy successively mounted on a subject holder can be optically imposed on preselected areas of a film (or a printing plate) in a required sequence when supported on a movable platen under control of a digitally programmed indexer. The camera components including the subject holder, objective support, image mask, platen and supporting structure therefor are so structured and related as to assure accurate placement of the images on a film in a programmed sequence at high speed and in such fashion that the images are uniformly sharp and of high resolution. The camera includes interchangeable subject holders such that it is equally useful with reflection copy, transparent originals and negative or positive film.

Abstract: A radiation collimator having a plurality of pivotally mounted collimating tubes, with adjusting mechanism for simultaneously adjusting the tubes relative to each other to various selected positions wherein they are all focused on selected common focal points.

Abstract: This invention is a device for removing a sample of particulate material from predetermined locations in the mass of said material. .Iadd.