Abstract: A gas gun includes a chamber, a barrel, and a bullet charging member for introducing bullets into the chamber. An elastic O-ring is positioned between the barrel and the charging member. A stepped part is formed integrally with the chamber and permits radial expansion of the O-ring. When pressurized gas is introduced into the chamber, the O-ring is caused to advance to the stepped part of the chamber when urged by a bullet. The bullet is motivated by the pressurized gas. The O-ring thereby becomes radially enlarged such that the bullet passes through the O-ring and is expelled from the barrel.
Abstract: A plow moldboard made of a plurality of sections which are reversible and interchangeable so that each moldboard section can alternatively serve as the leading edge of the moldboard in two different positions. Each section has substantially parallel top and bottom edges and substantially parallel side edges. Each section has a uniform curvature and also has two apertures for receiving a bolt therethrough and for fastening upon the plow frame.
Abstract: A vehicle, such as a tractor, has an attachment implement, such as a plow. An automatic controller acts upon a power lift of the plow, which moves the plow during operation in trenching position. In a first control, this motion of the plow ensues relative to the tractor, so that the vertical absolute velocity component of the plow becomes approximately zero. The plow is so moved relative to the vehicle that it moves upward during a downward motion of the plow-tractor joint and downward during an upward motion of such joint. The tractor is this completely disconnected dynamically from the plow, so that the pitching vibration behavior of the tractor is not subjected to a negative change due to the moments resulting from the forces of acceleration of the plow and affecting the plow, as is the case with a vehicle having a rigidly connected attachment implement. In a second control, the plow is moved in opposite phase to the tractor to counteract a change of its pitching angle coordinate.
December 10, 1984
Date of Patent:
May 26, 1987
Mannesmann Rexroth GmbH
Wolfgang Kauss, Norbert Mucheyer, Kurt Wittich
Abstract: A hand propelled device for lightly cultivating and mulching soil and typically for use in the home garden. The device includes a frame, a motor, and a hub assembly connected to the motor and also mounted to the frame. The hub assembly includes a shaft, a pair of hubs spaced apart on the shaft, and a plurality of beater wires pivotally mounted to each hub at radially spaced points near its outer circumference. The cultivator is supported by a single wheel mounted for free rotation between the hubs.
Abstract: A toy that can be used to simulate a vehicle or an aircraft is presented. The toy has a hood rotatably coupled to its front end which may be opened and closed. A rear portion is rotatably coupled to the rear end of the toy and may be rotated to two positions in order to simulate the tail portion of an aircraft and the back of a vehicle. Wing extensions are rotatably coupled to wing supports extending from the sides of the toy. A wheel is rotatably coupled to each wing extension. The wing extensions may be rotated to a vertical position so that the wheels will rest on a supporting surface and support the rear end of the toy. As such, the toy simulates a vehicle when the wing extensions are rotated to a vertical position and simulates an aircraft when the wing extensions remain in a horizontal position. Swingarms supporting simulated guns are rotatably coupled to the sides of the toy. A toy doll may be placed inside the toy and used in conjunction with the swingarms.
Abstract: The rear shield of the cultivating machine consists of a lower horizontal bar (4) which can be raised and lowered substantially vertically relatively to the machine frame (1) and of a pivoting upper bonnet (5) which has its upper edge (6) pivotally connected to the machine frame (1), while its lower end bears in a slidable manner on the lower horizontal bar (4).
Abstract: An immobilizing arm support is disclosed for locating a patient's arm to facilitate angulated radiographic imaging, the arm support including a flexible sheet adapted for being wrapped about the patient 3 s upper and lower arm and held in place by straps, an immobilizing strap being attached to the sheet for engagement with a table supporting the patient, an extension of the sheet being wrapped about the patient's wrist or hand for supporting and preventing rotation of the lower arm. The arm support is substantially radioluscent and preferably is formed with a pocket in the sheet for receiving a rigidifying panel to minimize flexure of the patient's arm. The immobilizing strap is preferably formed as a separate element for selective attachment and detachment with the sheet.
Abstract: A retractable in-row tiller device is adapted for mounting on a movable vehicle and for tilling the ground around and between objects in a row. An outrigger arm with a rotary tiller mounted on its distal end is retracted inwardly and extended outwardly by a trapeze-type control arm which amplifies the velocity and magnitude of reciprocal motion produced by a hydraulic ram to move around and avoid objects encountered in the row. Both manually and automatically operable controls are included respectively to allow an operator to retract and extend the tiller out of and into the row as desired and to cause the tiller to be retracted and extended out of and into the row automatically upon encountering an object in the row. Manual control is also provided for the operator to override the automatic retraction control.
Abstract: An implement wing frame folding apparatus is provided for a mobile machine and includes a main frame, a wing frame pivotally connected to the main frame, and a striker pin offset from the pivot axis of the wing frame. A float bar having first and second ends is provided with the first end pivotally connected to the wing frame. An actuating device is pivotally connected to and between the main frame and the float bar second end for selectively moving the float bar to pivot the wing frame between lowered and raised positions. A latch is pivotally mounted to the main frame for engaging the striker pin in an engaging position when the wing frame is in the raised position. A biasing mechanism is provided on the main frame for biasing the latch toward the engaging position.
Abstract: An elevation control mechanism is provided for an agricultural implement. A first lever is pivotally mounted to the implement frame about a pivot axis for oscillation relative to the frame. The first lever carries a ground engaging wheel. A second lever is pivotally mounted to the frame about a pivot axis for oscillation relative to the frame. An extendable and retractable pressure fluid actuator is pivotally connected between the first and second levers for effecting relative movement between the levers to raise and lower the frame relative to the ground. An adjusting arrangement is carried by the frame and connected to the second lever for pivoting the second lever to a selected orientation relative to the frame so as to locate the actuator at a selected position relative to the frame.
Abstract: A garden tiller tine assembly having an axle with a plate rigidly attached thereto. First blade structures are provided for engaging the soil and the blades are planar in configuration and have longitudinal axes. These blades are attached rigidly to the plate on one side in a plane obliquely disposed with respect to the horizontal axis of the axle, positioning a proximal edge of the first blade structure closest to the blade and a distal edge of the first blade farther from the plate than a proximal edge. Consequently, when the axle is rotated by a motor or the like in a first rotational direction, the proximal edge of the first blade will always be in front of the distal edge thereof whereby soil contact by the first blade will be thrown in a first lateral direction away from the plate. A second blade is attached to the other side of the plate.
Abstract: A wide swath agricultural implement is provided with a plurality of frame sections arranged side by side with respect to travel direction and which are coupled together so that they can be folded into a narrower unit for non-operational transport and also can flex about coupling axes generally parallel to travel direction and pitch about axes normal to travel direction in order to follow the contours of undulating ground. The couplings include fore and aft links with one end of the fore link hinged to the one section which pulls the other for pivotal movement about an axis parallel to travel direction and with the other end connected to the adjacent pulled section for limited universal and swivelling movement. Preferably the fore link is of triangular configuration in plan view with the apex at the latter connection and the side opposite the apex arranged parallel to the hinge axis.
Abstract: A tractor control system has a work implement, an actuator for the work implement, an electronic circuit utilizing an analog/digital technique and including an analog/digital control unit and a device for measuring a factor dominating the performance of the actuator and providing a first signal representing the actual value of the control system, a second signal representing a set point value, and a third signal in analog form representing the difference between the values of the first and second signals. The difference constitutes the control deviation for governing the analog/digital control unit which controls the actuator. A converter converts the third signal to digital form by a sampling device for sampling at a sampling frequency f.sub.o to establish a dead range in a time dimension. The sampling device provides pulses. A comparator circuit processes the digital signal and includes comparators having limit values defining the dead range set therein.
Abstract: A toy vehicle disk launching apparatus for launching small disks in spinning fashion into a surface for accelerated travel therealong. A chassis supported by wheels includes a housing having a track for loading disks with spindle portions on the axis thereof to a disk launching station. At the disk launching station is an arc shaped catapult lever pivotally mounted for contacting a spindle position of the disk for imparting spinning motion thereto thereby launching the disk onto the surface.
September 27, 1985
Date of Patent:
April 21, 1987
Hubert A. Rich, Miva A. Filoseta, Eric C. Ostendorff
Abstract: In a particular species of the preferred embodiment, the invention contemplates a land traveller such as a farm tractor pulling a passive load such as a plough, disc or the like. A control device for directing or controlling the path of travel of the vehicle over a field, and also regulating or controlling the depth of penetration of the plough or disc into the surface of the ground according to a predetermined depth irrespective of the terrain profile. The path control system consists of locating in a predetermined way, a track whose position is sensed by an electromagnet, and the relative position of the magnet is sensed by appropriate devices such as resistence measuring devices (strain gauges or variable resistors or reostats), photoelectric devices whose values are decoded through a microprocessor whereby steering of the prime mover along the predetermined path is maintained.
Abstract: A harness for infants afflicted with gastroesophageal reflux which secures the infant in position on an inclined surface safely, conveniently and comfortably. This is desirable because positional treatment of this nature is indicated for gastroesophageal reflux.
Abstract: A large coulter is laterally rigidly connected to a tractor. The coulter prevents lateral shifts and jerks of the tractor, thereby eliminating the tractor as a source of lateral shifts of drafted earthworking equipment. When also laterally rigidly connected to the drafted implement, the coulter practically eliminates lateral shifts of the implement as well. On a first pass, such as when plowing furrows to form beds for row crops, the coulter cuts a slot in the ground. During subsequent passes, driving the tractor over the same pairs of furrows, the coulter tracks this slot, causing the drafted earthworking implement to follow a path matching that of the implements used on the first pass. A draft member and the coulter frame also connect the drafting force exerted by the implement at a point on the tractor forward of the tractor rear axles, thus enhancing draft capabilities and fuel efficiency of the tractor while retaining the conventional rear hitch, and stabilizing the tractor as described above.
July 12, 1985
Date of Patent:
April 7, 1987
Ronny R. Barnes, David A. Gary
Billy R. Barnes, Ronny L. Barnes, David A. Gary
Abstract: A farming implement is disclosed having a series of wheel subassemblies supporting a towed frame. Each subassembly has a front wheel, preferably a castor wheel, and a rear wheel arrangement. According to the invention, the rear wheel arrangement is secured to a trailing arm which is connected by a connecting rod with a front arm. The connecting rod, the pivot point of the rear and the front arms and the point at which the rear and the front wheels are secured to the respective arms form, in the preferred embodiment, identical right-angled triangles. The rear arm is operatively associated with a hydraulic cylinder for raising or lifting the trailing arm as the need arises. The movement of the trailing arm is transmitted through the linkage to the front wheel whereby the frame of the implement is maintained at a generally horizontal position at all times.
August 15, 1985
Date of Patent:
April 7, 1987
F. P. Bourgault Industries, Ltd.
Francois P. Bourgault, Joseph L. Bourgault
Abstract: A ball pitching machine including a mainframe, a subframe pivotally attached to and selectively tiltable with respect to said mainframe, and a bracket pivotally attached to and selectively pivotable with respect to said subframe. The subframe supports a drive and attached drive wheel while the bracket supports a radially aligned pressure wheel. The bracket includes an A-frame member and the pressure wheel is rotatably supported at its apex. A guide tube having a discharge end disposed intermediate the drive wheel and the pressure wheel directs a ball in contact with the rotating drive wheel. The machine can pitch balls of various diameters such as baseballs and softballs since the spacing between the drive wheel and the pressure wheel is selectively adjustable by pivoting the bracket with respect to the subframe. Also, the amount of pressure applied by the pressure wheel determines the speed at which the ball is ejected from the machine.
Abstract: A farming implement, particularly for row cultivation, wherein the operator device comprises a mill or harrow having substantially vertical axes or slightly inclined to the vertical, and connected to the tractor by the interposition of an automatic device for transverse movement relative to the tractor, transversely displacing the implement and securing it at any intermediate position.