Abstract: A hydraulic foot assembly for supporting an object on a surface, the foot assembly comprising a cylinder defining an interior reservoir, a piston dividing the reservoir into two chambers in fluid communication with one another, the piston moveable within the reservoir, the position of the piston within the reservoir effecting the overall length of the foot assembly, a valve arrangement configured to limit movement of the piston within the reservoir.

Abstract: A marine knuckle boom crane includes a crane housing which is rotational relative to a pedestal about a vertical rotation axis and a knuckle boom assembly attached to the crane housing. The knuckle boom assembly includes a main boom, the inner end of which is connected pivotably about a first horizontal pivot axis to the crane housing; and a jib, the inner end of which is connected pivotably about a second horizontal pivot axis to the outer end of the main boom, wherein the jib is pivotable at least between an extended position in which the tip extends mainly forward from the main boom, and a folded position in which the jib is folded back, essentially parallel along the main boom. In order to position the jib with respect to the main boom, a tensioning member is provided extending between the crane housing and a curved extension guide connected to the jib.

Abstract: A fluid delivery system including an articulated fluid delivery unit (FDU) comprising, in preferred embodiments, first and second boom sections concatenated in articulated fashion to a turret. A stinger assembly is provided at a distal end of the FDU. The stinger assembly includes a fluid connection adapter for connection to a mating fluid connection housing assembly provided on a wellhead. Independent control of rotation at each of multiple axes on the FDU allows an operator to establish a measured directional bearing at each axis, such that a set of directional bearings values defines the FDU's current spatial position. In preferred embodiments, the FDU may “learn” a desired spatial position by storing the set of directional bearings values corresponding to that spatial position. The FDU may then return to that stored spatial position robotically when instructed to recall and take up again the corresponding set of directional bearings values.

Abstract: The present disclosure relates to a hydraulic system with at least two main control valves and with a hydraulic pilot control system for actuating the main control valves, wherein the hydraulic pilot control system and/or the main control valves are constructed such that the at least two main control valves open one after the other.

Abstract: A high speed, reduced clearance lift has a lift platform that is raised and lowered by operation of a telescoping hydraulic ram that has at least three telescoping sections, such that, the retracted height of the telescoping hydraulic ram is minimized while the deployed height of the telescoping hydraulic ram is such that the lift platform is lifted the height needed to, for example, lift a device out of the hull of a watercraft. To better stabilize the lift platform both in the retracted and deployed positions, locks, preferably in the form of actuated locking pins, interface with receivers mounted in a frame in which the lift platform travels. In such, when the locking pins are extended into the receivers, the lift platform and any payload resting on the lift platform are held steady without the need for hydraulic pressure.

Abstract: A base anchoring structure fixes a base 3 of an apparatus body 2 to a floor F in position. The base is at a lower part of the apparatus body and has casters C to move the apparatus body along the floor. The base anchoring structure includes linear actuators 4 fixed to the base, to downwardly bias, with a uniform pressure provided by air A supplied to the linear actuators, their respective pistons 5 until lower ends of the pistons reach the floor and stopper units (7, 8, 10) to engage with the downwardly pushed pistons and stably maintain the downwardly pushed state of the pistons. The engagement of the stopper units with the pistons stably maintains the anchored state of the base. The plurality of actuator is easily operated only by supplying air thereto.

Abstract: An operating table column has a column part a head part, and a plurality of actuating drives that each comprise a first element and a second element that can be linearly adjusted relative to this first element and that acts upon the head part. The first element of a first actuating drive is connected to the column part, while the head part is pivotably connected to the second element of the first actuating drive. The first element of a second actuating drive is pivotably connected to the column part, whereby, the head part is pivotably connected to the second element of the second actuating drive. The first element of a third actuating drive is connected at a distance from the head part to the second element of the first actuating drive and the second element of the third actuating drive is connected to the head part via respective universal joints.

Abstract: A hydraulic fluid actuated equipment leveling assembly incorporating a plenum having adjustment ports; an input channel opening the plenum; a disk valve operable for opening and closing the adjustment ports; telescoping and hydraulic ram actuated equipment support pedestals; hydraulic lines spanning between the plenum's adjustment ports, and the pedestal's hydraulic rams; and fluid displacing plungers connected operatively to the hydraulic lines for adjusting the hydraulic line's interior volumes.

Abstract: A beam (16) such as a spray bar of an agricultural sprayer (10) is pivotable about an axis (22) into an operating position. In the operating position, the bar is in contact with a stop (28) located on a two-legged lever (30), one leg (42) of which is acted upon by the beam (16) and the other leg (44) of which is acted upon by a energy storing mechanism (34).

Abstract: A variable rate suspension system for a boom sprayer including a lift assembly and chassis. The suspension system includes a needle valve fluidly connected to a hydraulic accumulator and a first and second lift arm cylinder. A control block provides hydraulic fluid to the system and lift arm cylinders. Dampening of vertical accelerations encountered by the chassis and transmitted to the boom sprayer through the lift assembly is controlled by adjusting the rate hydraulic fluid flows from the cylinders into the accumulator using the needle valve.

Abstract: A telescoping support strut configured to support a conveyor assembly of a portable conveyor system includes a first strut section and a second strut section configured to telescopically receive and substantially surround beams of the first strut section. The first strut section includes a first beam, an opposing generally parallel second beam, and a plurality of braces coupled between the first and second beams. The second strut section includes a first channel beam, an opposing generally parallel second channel beam, and a plurality of braces coupled between the first and second channel beams. Each channel beam comprises a perimeter wall configured to telescopically receive and substantially surround a respective beam of the first strut section. Each channel beam further configured to define a slot in the perimeter wall adjacent to facing surfaces of the respective beams of the first strut section.

Abstract: It is necessary to support components while machining is performed. In such circumstances work supports are now provided, whilst previously there was a dedicated arrangement for each component to be supported. By achieving a modularity in terms of adjustment through creating mountings comprising rings, arcs or bars secured upon posts a rigidity of presentation of support ends is achieved. By providing spacers for location about the posts on the mountings variability with regard to the positioning of the support ends is achieved such that similar geometry but different sized components and articles can be supported by the support arrangements. Furthermore, the spacers may be readily removed if C shaped, and the rings, arcs or bars can be shifted.

Abstract: A stable platform supports a cell, the stable platform comprises a lower mainframe, an upper mainframe, and a dampener system. The upper mainframe includes a plurality of recesses. Each recess is configured to receive a cell. The dampener system connects the lower mainframe to the upper mainframe. In one embodiment, the dampener system comprises a dampener element, such as sand, to dampen vibrations between the lower mainframe and the lower mainframe.

Abstract: The invention is a device, such as a chute or a conveyor belt, for receiving and transferring work pieces in a factory, mounted on a set of legs with lockable wheels at the bottom of each leg. Each leg is equipped with an hydraulic extension unit that is operated by air pressure. The air pressure is provided, for instance, from a machine, such as a press, that performs work on the work piece. Each leg is individually adjustable by the pneumatic extension unit, allowing the device atop the legs to be adjusted in height from the support surface, and maintained level or tilted from side to side or front to back. The wheels on the leg bottoms allow the device supported on the legs to easily move from one location to another on the factory floor. The legs may optionally be designed to fold up against the bottom of the supported device for ease of storage of the device.

Abstract: A support assembly supporting a spray boom assembly from a liquid supply assembly. Spaced support arms have opposite ends pivotably mounted on frames of the liquid supply assembly and the boom assembly to afford movement of the spray boom assembly between raised and lowered positions by a changeable length assembly such as a hydraulic piston, and shocks or bouncing action transmitted from the liquid supply assembly are damped by an assembly comprising an elongate shaft, an elongate tube around the shaft, resiliently elastic shock absorbing strips disposed between the shaft and the tube that with surfaces of the shaft and tube are shaped to restrict rotation of the tube around the shaft without resilient compression of the shock absorbing strips. Either the shaft or tube is fixed to the frame or the support arms, the other has an activating arm fixed to and projecting from it, which activating arm is pivotably attached to one end of the changeable length means.

Abstract: A suspension system for a boom of an agricultural particulate material distribution system comprises an inclined strut extending from the boom upwardly and inwardly to a suspension element at the tank. The suspension element comprises a plate attached to the rear wall of the tank and projecting outwardly to the side of the tank on which is mounted a pivot lever having a lower end attached to the plate and an upper end carrying a swivel for attachment to the strut. A gas bag spring is located in a hole in the plate so as to accommodate shock loads applied to the lever from the boom. A self leveling switch increases and decreases pressure in the gas bag spring to maintain a required orientation of the boom and to move the boom to a raised position for avoiding obstacles and for folding.

Abstract: A three-axis machine control structure includes a support structure and a machine component to which a workpiece or tool can be attached. Three control arms are connected between the machine component and the support structure. Preferably, each control arm is pivotably connected to the support structure and to the machine component and includes a pair of four-bar linkages connected in series. The control arms are oriented to permit rapid movement of the machine component along any or all of the three linear axes, while restricting movement of the machine component along the rotational axes.

Abstract: A structure having dimensions for transportation on an airplane, and which when assembled into a module has sufficient headroom for an average height person. The structure includes two portions, a top portion and a bottom portion. The top portion fits over and envelopes the bottom portion prior to assembly. The pre-assembly structure is thus easily transportable. To form the module, the top portion is raised to a higher level using pneumatic compressors. Folding walls are also provided in the structure, which when unfolded form the walls for the module. The folding walls may further include doors also provided in a folded form. The pre-assembled structure is designed for ease of construction to form the corresponding module. Several such modules may be combined to form a building.

Abstract: An improved power tool torque and weight balancing apparatus for use in in-line assembly processes that require power tools, such as in the assembly of automotive engines. The power tool and weight balancing apparatus consists of a pivoting mounting frame, either suspended from a rail or fixedly mounted on a four-roller trolley, attached to a balancer frame that holds an air or spring powered balancer mechanism. The balancer mechanism has a cable with a swivel connector attachment which travels inside a set of telescoping tube members and attaches to a mechanism for holding a power tool. The mechanism for holding a power tool may hold a horizontally or vertically mounted power tool and is pivotable 360 degrees for operator convenience.

Abstract: A multi-axis machine is disclosed. The machine includes an adjustable external framework having a pair of support structures connected by a plurality of servostruts. A multi-axis manipulator is attached to one support structure and may be designed to carry a tool. A workpiece may be attached to the other support structure for interaction with the tool as the tool is moved by the multi-axis manipulator. The controlled extension and retraction of both the framework struts and manipulator struts provide the multi-axis machine with increased versatility of operation.

Abstract: A machine tool isolation system is disclosed. The preferred system includes a pair of platforms connected by a plurality of legs. A tool is typically connected to one platform, and a workpiece to the other. The legs are able to move one platform with respect to the other which can create vibrations. A base, typically formed by a plurality of legs, is mounted to one of the platforms to support the two platforms and legs connected therebetween. A vibration isolator is disposed between the base legs and the floor or other support on which the entire system is mounted.

Abstract: A support device of a laying vehicle such as a track laying vehicle includes a vehicle pan providing a support surface, the support surface having a central plane, a support shield for engaging the ground, a first guide element hingedly connected between the support shield and the vehicle pan, a first bearing connecting the first guide element to the support shield, a second guide element hingedly connected between the support shield and the vehicle pan, a second bearing connecting the second guide element to the support shield, a first piston-and-cylinder unit connected between the support shield and the vehicle pan, a first piston-and-cylinder unit bearing connecting the first piston-and-cylinder unit to the support shield, a second piston-and-cylinder unit connected between the support shield and the vehicle pan, a second piston-and-cylinder unit bearing connecting the second piston-and-cylinder unit to the support shield, the first bearing, the second bearing, the first piston-and-cylinder unit bearing an

Abstract: A vessel unheading device and method especially suited to handle shot coke produced in a delayed coker unit of a petroleum refining process. The device includes a car having mounted thereon one or more bottom head retracting support members which can be laterally positioned below the head assembly. The support member includes a vertically retractable member suitable for elevating a bearing plate mounted at an upper end thereof into pivotable load bearing engagement with the head, and a horizontally retractable member having one end attached to the bearing plate and another end attached to the vertically retractable member for applying a pivot force. Shot coke or other debris is captured from the opened vessel by a mobile chute wheeled into position adjacent the unheading car. Following complete retraction, the head is transported to a remote location for maintenance.

Abstract: The present invention relates generally to a metrology framework for determining the position of a first object, such as an operator, relative to a second object when the first object is moved relative to the second object. The metrology framework comprises a plurality of extensible instrument arms that are operatively connected in proximity to the first object and the second object. A sensor is in communication with each extensible instrument arm to provide a signal indicative of the extension of the instrument arm. The combination of the signals can be used to determine the position of the first object relative to the second object in all six degrees of freedom.

Abstract: A machine such as a machine tool includes a pair of spaced platforms. One platform (11, 31, 185, 72, 159, 142) may mount an operator such as a tool in a spindle and the other platforms (10, 20, 180, 170, 144, 163) may mount an object such as a workpiece. The spaced platforms are joined by six powered and extensible legs (20-25, 40-45, 64-69, 145-150, 166, 182-84, 187-89) joined to the respective platforms by universal joints. The length of the legs is individually manipulated to vary the position of the platforms and, therefore, the object and operator relative to each other in six axes. The powered legs may be hydraulic cylinders (20-25) or recirculating ball screw driven (195, 197, 198). The distance between the spaced platforms may be measured by separate extensible instrument arms (130, 131, 171) which join the platforms. The instrument arms may use a digital position device (238, 240) to measure the extension and contraction of the instrument arms or may use a laser interferometer (267) for that purpose.

Abstract: An outrigger device is provided for automatically controlling outriggers on a fishing boat. The device comprises three strut members connected to a side surface on a fishing boat at given points. Two of the strut members will be of variable length, while the third strut member is of a fixed length. The first variable strut member serves as a base for the main outrigger pole. The second variable strut member and the fixed strut member serve as supporting and controlling struts for the outrigger pole. Variable strut members will be varied, either independently or together, to change the position of the outrigger device to correspond to several different situations.

Abstract: Apparatus for guiding a drawn agricultural implement of the type which has a transverse tool bar and a pull hitch. The apparatus controls the horizontal angular orientation of the tool bar relative to the pull hitch to guide the implement.

Abstract: A robotic structure having a low mass, capable of providing seven degrees of freedom, and movable in a hemispherical workspace. The robotic structure includes several platforms connected by actuatable longitudinal members and movable joints made of intersecting or interwoven wire members.

Abstract: This invention relates to a six-axis machine for locating an operator with respect to an object, and more particularly to a versatile machine tool in which the tool can be moved in three lineal directions and three rotational directions in relation to the surface of a workpiece.

Abstract: A machine includes a pair of spaced supports, one of which may mount an operator such as a tool in a spindle and the other of which may mount an object such as a workpiece. The spaced platforms are joined by six powered and extensible legs joined to the respective platforms by universal joints. The length of the legs is individually manipulated to vary the position of the platforms and therefore the object and operator relative to each other in six axes. The powered legs may be hydraulic cylinders or recirculating ball screw driven. The distance between the spaced platforms may be measured by separate instrument arms which join the platforms. The instrument arms may use a digital position device to measure the extension and contraction of the instrument arms or may use a laser interferometer for that purpose. The changes in the instrument arm's lengths may be used to generate signals which are used to control the extension and contraction of the powered legs.

Abstract: A drilling boom has an articulated arm 12 which carries a drill feed beam 28 on its outer end. Apart from the articulation 36, 38 provided by the joint at the outer end of the arm, the feed beam can rotate about two mutually perpendicular axes at the end of the arm. One of these axes is defined by the so-called rollover unit 44 and the other axis 92 is at right angles to the length of a drill rod on the feed beam and allows at least 180 degrees of rotation so that parallel holes can be drilled in all parts of the roof, floor and side walls of a heading.

Abstract: An expandable and contractable robot arm is vertically provided on a machine base through a first universal joint, with X and Y horizontal axes being defined passing through the center of rotation of the joint crossing each other at right angles and a vertical Z axes being defined as a longitudinal axis of the arm passing through the center of rotation of the joint. A pair of driving sources are provided on the machine base and connected to the arm for causing the arm to incline in the X axis direction along an X-Z plane define by the X and Z axes and in the Y axis direction along a Y-Z plane defined by the Y and Z axes. A tool attaching plate is mounted on the upper end of the arm through a second universal joint having its center of rotation positioned on the Z axis. A parallel ruler mechanism is provided between the attaching plate and the machine base so as to keep the posture of the attaching plate constant.

Abstract: A resilient mounting of a centrifuge that is a pneumatic one is made in a stand between the subsurface and supporting frame of the centrifuge by means of at least three vibration insulating units, each of which is provided with at least one pneumatic spring connected to a source of pressurized air through an automatic controller of a constant static height and having at least three vibration dampers. In a preferred embodiment, the resilient mounting of a centrifuge has three controllers of constant static height and vibration dampers which are seated obliquely.

Abstract: The invention is a system to counterbalance the static torque produced by a weight mounted to a beam member which in turn is rotatably mounted to a frame member, the beam member rotatable about the axis of rotation which is substantially aligned with the longitudinal axis of the frame member. The system comprises a support member rotatively mounted to the frame member and coupled to the beam member for simultaneously rotation about the axis of rotation. A pressurizable power actuator having a first end pivotally mounted to the frame member and a second end having an output shaft for producing an output force proportional to the pressure level within the actuator. A coupling device is included connecting the output shaft to the support member. A pressure level control system is provided for maintaining the pressure level within the actuator to produce a torque sufficient to counterbalance the torque produced by the weight.

Abstract: A patient trolley has a tiltable upper body support which is hydraulically lifted to a raised "heart" position and which is immediately lowered by a quick release valve so that a patient may be quickly treated in a horizontal position. Two cylinders are mounted on trunnions with distal ends of pistons interconnected to upper body supports so that the cylinders extend downward and toward a head end of the trolley from the trunnions. As the upper body support is lifted the cylinders rotate on the trunnions toward the head end of the trolley. In the down position of the upper body support the cylinders and trunnions may be lifted and held in an inactive position for clearance of hospital equipment. Levers and linear bearings enable the upper body support to be raised to substantially perpendicular position and to be quickly lowered.

Abstract: Disclosed herein is a method and means for replacing upper and lower corrugated rolls in a single facer having a cassette frame for rotatably supporting the upper and lower rolls and a main frame to which the cassette frame is detachably connected. The method comprises the steps of suspending and moving away the cassette frame apart from a predetermined mounting position in the single facer, keeping a spare cassette rotatably supporting other upper and lower rolls waiting in a suspended condition and fixing the spare cassette frame to the predetermined mounting position in the single facer in place of the cassette frame removed. Means for performing the method is disclosed which comprises a cassette frame rotatably supporting the upper and lower rolls; and a main frame carrying a pressure roll and a gluing unit. The cassette frame is detachably connected to the main frame.

Abstract: A telescoping mast assembly for floodlighting equipment or other apparatus is arranged to be raised by admitting pressurized fluid to the interior of the assembly and lowered by releasing the fluid. The assembly is constructed of light metal, such as aluminum alloy, and includes a plurality of telescoping hollow members, or tubes, each inner member having a pair of substantially spaced wear rings near its lower end for maintaining the spaced positions of the members and a fitting at its outer end carrying an internally mounted wear ring for maintaining the spacing at the outer end. The telescoping members do not engage one another but are spaced by the wear rings. The fitting is readily detachable and facilitates the use of straight lengths of standard aluminum tube stock for the mast sections. The fittings include keys slidably engaging longitudinal slots in the members for preventing rotation of the members with respect to one another. Seals are provided for preventing leakage of fluid between the members.

Abstract: A method is set forth for controlling the orientation of an articulated boom of the type having a first portion and a second feed arm portion such that the first portion remains parallel to a predetermined position during movement of the articulated boom. The method utilizes a computer which senses the angular position of the various parts of the boom in a total of five directions and computes the required angular position of the feed arm to maintain it parallel to a set position as the boom is moved in any direction. Various hydraulic servovalves are utilized to control the flow of hydraulic fluid in a manner to maintain parallelism within 1/2.degree. with the referenced position.

Abstract: A massive crane luffing jib is held and loaded under compression atop the main crane boom such as a hydraulically extensible and retractable telescopic boom whose sections may be locked for safety. The luffing jib is pivoted to an adapter atop the boom to enable swinging the jib to a stowed position close to and along the front side of the boom. First, second and third masts are pivotally attached to the jib base section. The second and third masts are connected by foldable tension links. An upper foldable ladder in the pendant line between the point of the jib and bridle assembly forms a hard connection between the first and second masts. A lower foldable ladder including a gooseneck forms a hard connection between the second and third masts following automatic coupling of the gooseneck with the third mast after the tension link becomes fully extended.

Abstract: A heavy and elongate recumbent load, such as a missile, is floatingly supported by two pairs of hydraulic pistons engaging it forwardly and rearwardly of its center of gravity, the pistons of each pair being oppositely inclined at 45.degree. to the horizontal. Each piston is part of a single-acting jack whose cylinder has its bottom end connected via a pair of antiparallel check valves to a source of hydraulic fluid, such as a pump in parallel with an accumulator, whose pressure substantially balances the component of the load bearing upon the respective piston. Each check valve has a bising spring so adjusted that it allows the valve to open in response to a manual force applied to the load near the point of attack of the associated piston whereby the load can be reoriented by hand, e.g. for alignment with a launching tube into which a missile is to be inserted with the aid of a carriage equipped with the four hydraulic jacks.

Abstract: Tool support apparatus having a frame mounted on wheels and motors for driving the wheels to move the frame. A ram tube carrying different tools at its lower end supported in a cylinder mounted on an oscillator bracket which cooperates with an oscillator slide carriage slidably mounted on shafts supported on the frame and a hydraulic cylinder mounted on the frame for moving the oscillator slide carriage along the shafts. An electric motor for moving the lower end of the ram tube in a first arcuate direction and another electric motor for moving the lower end of the ram tube in a second arcuate direction in a plane perpendicular to the plane of movement in the first arcuate direction. A hydraulic cylinder attached to the ram tube for moving it vertically.

Abstract: A mining drill comprising a rail along which a mining drill head is slidably rectilinear, this rail being carried by a hydraulic motor pivotally connected to a rotary head at the end of an arm swingable about a pivot axis which is generally horizontal and is formed by a column or post. A first hydraulic motor is provided to rotate the post about a generally upright axis and hydraulic cylinders can be provided to swing the post about a pivot close to its pedestal. The device is designed to support the rail so that substantially parallel holes can be drilled in a subterranean structure in practically any direction, e.g. with any inclination to the axis of the main gallery, but especially parallel thereto.

Abstract: An apparatus for mounting a device defining a mounting plane so as to be ectively rotatable about mutually perpendicular axis with respect to a base member defining a base plane. The first axis is defined by a transverse pin fitted to the gimbal and rotatably secured to the base plane. The mounting plane is tilted about either axis by driving an associated, diagonally opposite pair of support arm members linearly so as to foreshorten one support arm member to the extent that the other is lengthened.

Abstract: A rock drill boom structure comprises a support means, an elongated boom swingably carried by the support means and a feed beam on which a rock drill is mountable so as to be power displaceable therealong, the feed beam being carried by one end of the boom. The support means includes an elongated hollow guide means of substantially less longitudinal length than the boom and in which the boom is slidably received to project through both ends of the guide means, the boom being arrestable in the guide means, a rotatable member on which the guide means is pivotably mounted for pivotable movement about an axis transverse to the axis of rotation of the rotatable member, first power means for pivoting the guide means and second power means for rotating the rotatable member. The rotatable member 19 is preferably disc-shaped and has an aperture therein through which the power lines of the rock drill are drawn.

Abstract: A skinning apparatus includes a suspension device and a skinning device suspended by the suspension device for easy manipulation by an operator in removing the skin from the ham area of a hog carcass which is suspended from an overhead support. The skinning device includes a revolvable tooth roller and blade which cooperate with each other and which are dimensioned to progressively remove the skin from both ham areas of a hog carcass in a single pass. The suspension device permits easy manipulation of the heavy skinning device in following the contours of the ham areas of the suspended hog carcass during the skinning operation. Control means on the hand grips of the skinning device control operation of both the skinning and suspension device.

Abstract: A tool positioner has a main support defining a pair of main pivot axes and ncluding a guide. Respective main cranks have inner ends pivoted at the main pivot axes on a support and outer ends pivoted to ends of respective links whose other ends are pivoted on a tool holder. This holder has an elongated stem longitudinally displaceable in the guide and carries a tool which can pivot about the axis of the stem and about another axis perpendicular thereto. The two cranks can be displaced independently of each other for swinging of the tool holder about either of the main pivot axes or for displacing it along the axis of the stem.

Abstract: A mining vehicle has a body with a center boom extending forwardly from the body. A temporary roof support is mounted on the outer end of the center boom. The roof support has a base, a telescopic column, and a cross beam on top of the column with auxiliary beams pivotally connected to the cross beam to engage the roof. Hydraulic jacks are connected between the base and the outer ends of the beams, respectively. A pedestal is pivotally mounted on the front end of the body, on each side of the center boom, to support a drill boom. A drill head is pivotally mounted at the outer end of the drill boom and is vertically movable by the drill boom for roof drilling. Each drill boom has the end opposite the drill head received in a track on the pedestal which serves to maintain the drill head on a vertical axis in any position of the drill boom. Each pedestal, at its inner end, has a laterally extending arm, the outer end of which is pivotally connected to the body at a pivot joint.

Abstract: A working pit with an articulated tool arm assembly is provided for an automobile assembly line. A tool carried by the arm assembly is used to perform assembly operations in an automobile moving either longitudinally or transversely along the line. The articulated arm is mounted on a trolley which is movable longitudinally of the working pit along tracks adjacent a side wall of the pit. The tool arm can pivot horizontally toward and away from the pit wall and can pivot vertically to enable a tool holder at the end of the arm to move from a position at or below floor level to a position in the path of an automobile body moving along the assembly line above the pit. The tool holder enables the tool to rotate through a path of 360.degree. and to tilt. The articulated arm is especially designed for use with a nut runner to tighten nuts and bolts underneath the automobile body, but can also be used with other tools.

Abstract: Drilling equipment comprises a single boom supporting a plurality of drilling masts each provided with a drilling machine, adjustment means being provided to simultaneously adjust the relative positions of the drilling masts.

Abstract: An improved cleaning apparatus for the removal of carbonaceous deposits from the inner surfaces of the ascension pipe elbows and ascension pipe employed on coke ovens. The cleaning apparatus is comprised of a base support, a movable support and a cleaning element. The base support is mounted on a larry car and the movable support is superimposed upon and connected to the base support. The cleaning element is pivotally attached to the movable support and is equipped with a cleaning head mounted on the end of an arm and means for moving the arm in and out of the pipe which is to be cleaned.