Abstract: An indicating device for repeatedly indicating variation in the load on a part such as a polish rod of a pump is disclosed. The indicating device includes an indicator for providing an indication when current flows through the indicator, a switch for moving between an opened and a closed position and for permitting current to flow through the indicator when the switch is in one of the open and closed positions, and reciprocating moving means for reciprocally moving in response to reciprocating movement of the part and for moving the switch to the one of the open and closed positions once during each cycle of the reciprocating movement of the reciprocating moving means. The indicator thus provides the indication once during each cycle of the reciprocating movement of the part and thus repeatedly indicates reciprocating movement of the part.

Abstract: A method is disclosed for determining a component of the response of a reservoir to tidal forces (such as the amplitude of variation or delay time) in a hydrocarbons reservoir. That method comprises measuring a variable responsive to tidal forces within the reservoir over a measurement time period, determining a theoretical earth-tide for the reservoir over that measurement time period, and determining the component of the response to tidal forces by comparing the variable measurements and the theoretical earth-tide determinations. Examples of variables that are responsive to the tidal forces are fluid level in a borehole, pressure, and borehole stress. The measurement time period should be sufficiently long so that both a maximum and a minimum variable measurement are achieved during that time period (e.g., fourteen or twenty-four hours).

Abstract: The optoelectronic interface and refractive index display device has a light-emitting diode the light from which is fed through an optical waveguide to a sensing element. A planoconvex lens collimates the light which then passes through a regular cylindrical element to a circular cone. Total reflection occurs at the laterial conical surface thereof when the circular cone is in a gaseous atmosphere. The reflected light is fed through the regular cylindrical element, the planoconvex lens, and then through a common waveguide and receiving waveguide to a photodiode. When the circular cone is immersed wholly or partially in liquid, the light coupled into the sensing element experiences no significant total reflection. The signal generated by photodiode decreases accordingly. The planoconvex lens reduces signal loss.

Abstract: A method and apparatus for testing the operating condition of a check valve directs sound waves into the valve chamber of a check valve assembly and utilizes the collected signals of the reflected sound waves to generate various time lapse data corresponding to the valve disk position and movement, such time lapse data providing an analysis of the condition of the valve assembly.

Abstract: A process and device for monitoring the chip-removing treatment of a workce by analyzing the sound emission detectable on the tool which is transformed into an electrical signal, filtered, and compared with respect to its amplitude determined over a predetermined period of time with a predetermined adaptable threshold value. The constituents contained in the sound emission signal of the continuous basic noise signal resulting from the cutting and friction noise, and of the pulse-type chip-break signals superposed with respect to this with a higher amplitude, are separated and separately analyzed and evaluated.

Abstract: An ultrasonic wave type obstacle sensor which comprises a first ultrasonic microphone for transmitting intermittently ultrasonic waves to a road surface obliquely and forwardly at predetermined timing, a second ultrasonic microphone for receiving the ultrasonic waves reflected from the road surface side, a comparator for providing an obstacle detecting signal when a signal from the second ultrasonic microphone exceeds a predetermined level of judgement, and an obstacle discriminating device for generating an obstacle discriminating signal when the pulse width of the obstacle discriminating signal is a predetermined width or larger.

Abstract: Methods and apparatus for ultrasonically measuring selected physical parameters of a test material or structure are achieved by selecting and configuring waveguides for transmitting extensional, longitudinal, shear, Rayleigh and Lamb waves into media in a marginally dispersive manner. Marginally dispersive transmission is defined by specific criteria of velocity and waveguide diameter. Methods and apparatus for acoustically isolating the waveguides to permit leakage are included, as well as a method of extension to flexural mode conversion to launch flexural waves into a medium.

Abstract: Apparatus for gauging high pressure gas in particular for the supply of oxygen gas on board on aircraft, the apparatus being associated with a gas tank or with a plurality of gas tanks having their outlets interconnected, the apparatus being wherein each individual tank is provided both with a pressure regulator connected to a common outlet duct, and with a pressure sensor producing a signal proportional to the pressure in the, or each, tank, with the or each, pressure sensor being connected to a calculation and storage unit suitable for determining the content of each individual tank on the basis of the signal associated therewith and taking account of the coefficient of compressibility of the gas contained in each individual tank on the basis of data stored in the storage unit for different values of pressure, and consequently deducing the overall available content, the calculation unit further including a readout for displaying the overall available content.

Abstract: An apparatus for measuring the quantity of fiber tufts during flight thereof, having an impact element provided with an impact face arranged in the flow path of the fiber tuft stream and being exposed for collision with the fiber tufts. The impact face is situated at an oblique angle to the flow direction of the fiber tufts. There is further provided a measuring element operatively connected to the impact element for generating signals representing stresses or excursions of the impact element derived from the collision of fiber tufts with the impact face. An electronic evaluating device is connected to the measuring element for receiving signals therefrom.

Abstract: A web tension sensing device supports the end of a rotating roll by means of a housing. A bearing within the housing transmits forces to a beam which carries a strain gage. The beam is mounted within a cylindrical body which can be secured to a fixed structure in a variety of ways. The beam has a flat middle portion of reduced thickness, where the strain gage is located, and the forward end of the beam is fitted within the bearing, which is a spherical self-aligning bearing.

Abstract: There are disclosed pipette tips having a wettable exterior surface shaped to force liquid that wets it to not fall under the influence of gravity to the terminal surface at which the dispensing aperture is located. For this, the radius R.sub.o of that wettable surface at the terminal surface satisfies the equation (I) R.sub.o <(.sigma./.rho.g).sup.1/2 and the slope of the wettable surface satisfies the equation (II) dz/dr<(.sigma..sup.2 /(.rho.gr.sup.2).sup.2 -1).sup.1/2 where dz/dr is the rate of change in the height per the rate of change of distance from the axis of symmetry of the tip.

Abstract: Density measurements can be made in a gas contained in a flow through enclosure by measuring the sound pressure level at a receiver or microphone located near a dipole sound source which is driven at constant velocity amplitude at low frequencies. Analytical results, which are provided in terms of geometrical parameters, wave numbers and sound source type for systems of this invention, agree well with published data. The relatively simple designs feature a transmitter transducer at the closed end of a small tube and a receiver transducer on the circumference of the small tube located a small distance away from the transmitter. The transmitter should be a dipole operated at low frequency with the kL value preferably less than about 0.3.

Abstract: The positioning and/or configuration of the fixtures used in the various machines or stations of a production line are checked by an automatic checking device including a coordinate-checking unit which moves automatically along the line and stops at each machine or station in order to carry out the necessary checks. A stationary electronic control unit near each machine or station is connected to electronically-controlled actuator means on the checking unit in order to control the movement of a feeler head of the checking unit according to a predetermined program adapted to the specific station at which the checking unit has stopped.

Abstract: In an engine used for a portable working apparatus such as a brush cutter, there are arranged a drive gear rotated by a starter motor, and a driven gear engaging with the drive gear and connected to a crankshaft through a nonreturn clutch. The driven gear is fixed to the crankshaft until the starter motor starts the engine and released from the crankshaft after the start of the engine and after a rotational speed of the crankshaft exceeds that of the starter motor.

Abstract: An apparatus for rotatably moving and positioning an indexing table is disclosed. The apparatus of the present invention allows an indexing table to be quickly rotated between a plurality of index positions to within an accuracy of less than 0.001 inches on a repeated basis. Further, the apparatus has no looseness or physical separation between motion transmission elements while at or near each index position that would otherwise allow for externally induced movement of the indexing table. While at or near each index position, a first side of the cogs of a first planetary gear is kept in continual contact with the first side of the cogs of a main gear, and the second side of the cogs of a second gear is kept in continual contact with the second side of the cogs of a main gear.

Abstract: A shift apparatus for shifting a transfer case between a High-Range operating mode and a Low-Range operating mode. The shift apparatus includes a sector plate supported within the transfer case for rotation about an axis. A range pin member extends into a range slot formed in the sector plate. The range pin member is adapted to move a first shift fork in response to selective rotation of the sector plate between first and second positions corresponding to the High-Range operating mode and the Low-Range operating mode of the transfer case. The range slot has a first camming edge provided for moving the range pin and first shift fork toward the first position upon rotation of the sector plate in a first direction, and a second camming edge for moving the range pin and first shift fork toward the second position in response to rotation of the sector plate in a second direction.

Abstract: This invention is a self-adjusting motor mount for holding a driving gear mounted on the shaft of a motor in engagement with a driven gear carried by a back plate disposed in a vertical plane and is particularly useful in a pen plotter. There is a mounting plate carrying the motor and the driving gear. A pivotal mounting carried by the back plate attaches the mounting plate to the back plate at a point above the motor for pivotal movement so as to have the motor pivotally hang from the point. There is a bias spring for resiliently urging the mounting plate to carry the driving gear into engagement with the driven gear. Finally, there is a shock absorber carried by the back plate for absorbing pivotal gear disengaging movement of the mounting plate.

Abstract: A serpentine tube inspection positioning spine formed from a plurality of identical links. Each link has a convex first end and concave second end spaced along the longitudinal axis of the link whereby adjacent links may be mated together. An axially extending bore in each link receives a continuous cable maintained under tension by a spring attached to one end of the cable. This places pressure on the links that serves to maintain the mated links in a rigid straight configuration while under compressive forces during insertion into a tube to be inspected. The resilience of the spring also allows pivoting of adjacent links for travelling through a bend in the tube.

Abstract: A parking-brake operating device comprises a braking-force holding mechanism including a plate-like bracket having a ratchet wheel and mounted at a location adjacent a seat on a body floor, a swing arm mounted to the bracket for angular movement, and a ratchet pawl supported on the swing arm for angular movement and engageable with and disengageable from the ratchet wheel so as to hold the swing arm onto the bracket; an operating lever supported by the bracket coaxially with the swing arm and for angular movement, and having at least one opening; a support shaft mounted on the swing arm and loosely fitted in the opening so as to permit a predetermined quantity of relative movement between the swing arm and the operating lever; a link mechanism including a bell crank supported on the operating lever for angular movement, and a link element having its both ends which are connected respectively to one end of the bell crank and the ratchet pawl for angular movement; a release element mounted to the operating leve

Abstract: Disclosed is a brake grip 10 including a body member 12 and a lever arm section 14. The brake grip 10 has an ergonomically shaped exterior surface which supports and distributes proportionately the weight and pressure experienced by a hand grasping the grip during bicycling. The body member 12 includes a palm saddle 20, a rocker ridge 32 along an outer rear edge of the palm saddle, and a thumb ledge 22 on an inner side of the body member. An outwardly projecting wedge element 46 is at the front end of the palm saddle 20. The wedge element 46 terminates at an outer end in a semi-rounded tip 46a, and it has a base 46b which merges at a lower, inner side portion with the curved surface 30 of the thumb ledge 22, and at a lower, rear portion with a front end of the palm saddle 20. The merging portions form a smooth, rounded, enlarged load bearing surface. The lever arm section 14 has grooves 50-52 for fingers and it covers the exterior of a lever arm 48 of a conventional brake lever.

Abstract: The present invention is directed to a roller follower for use with an engine. The roller follower incorporates a roller having a surface formed with minute recesses arranged at random so that the average value of the SK value is less than zero. Also, the ratio of the total area of the minute recesses to the entire area should be 10 to 40%.

Abstract: A bicycle pedal has two opposed bilaterally symmetric tracks which are substantially identical. Each track is bounded by an axially disposed central concave surface and two substantially parallel apposed side surfaces. Each side surface extends inward, in equidistant juxtaposition with the central convex surface. Each track is slightly wider at the free end of the pedal than the end fixed to the crank arm. A shoe cleat has a bottom with a longitudinally disposed central concave surface and adjacent flat lateral surfaces as well as upper bilateral cleat side surfaces. The bottom central concave and two upper bilateral surfaces mate with the corresponding pedal track surfaces in an engagement parallel to the pedal axis. Attached to the free end of the pedal is a lead which has an exterior flush with the central convex surfaces of both pedal tracks. The lead tapers bilaterally into fins lying in front of the area between the two opposed pedal tracks.

Abstract: A gear drive unit of the type including a twin-shaft selective output mechanism is disclosed wherein first and second overrunning clutch mechanisms constituting the twin-shaft selective output mechanism are each composed of a spring-receiving chamber, a coiled spring and a driven gear. The first overrunning clutch mechanism, in response to rotation of a worm wheel in a forward direction, radially expands a first coiled spring to connect the worm wheel and a first driven gear, thereby connecting the worm wheel and a first driven gear to transmit the forward rotation of the worm wheel to the driven gear. Similarly, the second overrunning clutch mechanism is responsive to rotation of the worm wheel in the reverse direction to enlarge the diameter of a second coiled spring, thereby connecting the worm wheel and a second driven gear to transmit the reverse rotation of the worm wheel to the second driven gear.

Abstract: The invention concerns a continuously variable driving unit motor vehicles having a controllable internal combustion engine and a hydrostatic-mechanical power split transmission with continuously variable reduction ratio, wherein the transmission is set to the lowest possible resistance when the driving unit is started and when the vehicle is stationary with the internal combustion engine running or during a warm-up period, the motor vehicle does not move unintentionally.

Abstract: An automatic transmission line pressure control system controls line pressure in an automatic transmission equipped with a torque convertor for hydraulically coupling and uncoupling friction coupling elements of the automatic transmission. The automatic transmission line pressure control system regulates line pressure for selectively coupling and uncoupling the friction coupling elements so as to shift the automatic transmission into desired speed gears. The line pressure is forcibly dropped to a level lower than a level present before an occurrence of a manual shift-down operation when a shift-down sensor detects the occurrence of a manual shift-down. The line pressure is then raised as a speed sensor detects an increase in rotational speed transmitted the automatic transmission, thereby shifting the automatic transmission into desired speed gears.

Abstract: In an improved single piece earth boring bit of the type having a body including a solid bit face on one end and a shank on the opposite end for connection in a drill string, an improved cutting structure having diamond filled compacts used as a wear resistant inserts. The improved compacts have hard metal jackets and integrally formed diamond cores. The improved compacts are advantageously used as wear resistant inserts in the gage and heel rows of the bit.

Abstract: A framing hammer construction in which a conventional hammer head is provided with a boss permanently secured to one side of the hammer head, this boss containing double tapered grooves for releasably holding laterally projecting nails, together with a flattened boss on the side of the hammer head opposite to the grooved boss for driving nails with sideways blows of the hammer head.

Abstract: A tool is provided for lifting and rolling for removal ordinary roofing shingles which have been nailed on roofs. The tool comprises an articulated, elongated handle having upper and lower sections joined at an intermediate pivot, the lower section angled forwardly, out of alignment with respect to the upper section. The pivot permits relative pivotal movement of the lower section with respect to the upper section to vary the angle it makes therewith. Means are provided to secure the lower section at an angle within a range of angles with respect to the upper section. A flat blade is secured to the free end of the lower section for slipping beneath shingles, for lifting and rolling thereof. The blade comprises a plurality of spaced tines extending in a direction parallel to the longitudinal axis of the lower section. The tool according to the present invention provides a construction of shingle lifting tool which will facilitate the lifting and rolling of ordinary roofing shingles.

Abstract: A rotary for a power tong which, in one aspect, has a master piston and cylinder which, when actuated, delivers hydraulic fluid to one or more slave hydraulic piston and cylinders which apply one or more active jaws against a pipe. The master piston and cylinder can be depressed by a plunger mounted on top of the tong housing and the active jaws can be released by opening one or both valves mounted on the rotary and actuable by depressing a ring mounted on the top of the tong housing.

Abstract: A lockable wire guide control handle for grasping and manipulating a wire guide. The control handle includes an elongated member and a thumb slide positioned in a retention channel formed in the distal portion of the elongated member. The proximal portion of the elongated member is cylindrical having an enclosed passageway extending longitudinally therethrough, which is offset for passage of the wire guide therethrough. The distal portion of the elongated member includes a dovetail-shaped retention channel, the bottom surface includng an inclined slot for positioning the wire guide therein. The thumb slide includes a mating dovetail-shaped tenon positioned in the retention channel. Extending from the flat surface of the dovetail-shaped tenon is an inclined projection for fixedly positioning the wire guide in the inclined slot. The inclined slot and projection have a variable, uniform spacing therebetween for fixedly positioning various diameter wire guides therein.

Abstract: A method and apparatus for machining the inside surface of the two halves of the hollow casing of a machine or the like with the two halves positioned and mated together to form the closed hollow casing thereby providing machined areas on the inside surface of the two halves which are symmetrical and in line. The apparatus comprises a support structure in the form of a boring bar extending through the closed housing. A pair of spaced bearings in the closed hollow casing rotatably support the boring bar. Positioning apparatus is operatively attached to the boring bar for rotating and axially positioning the boring bar within the closed hollow casing. Support assemblies are positioned within the closed hollow casing and are attached to the boring bar to move with the boring bar. Cutter devices are attached to the support assemblies and are movable in a radial direction with respect to the boring bar to machine the inside surface of the closed hollow casing.

Abstract: This invention relates to an adjustable face grooving tool holder adaptable for holding a cutting insert for cutting circular face grooves having widely differing diameters in the end face of a workpiece without interchanging tool parts.

Abstract: An improved slot device for use with a table saw is provided. A throat plate having an enlarged central opening straddled by a dove-tailed groove into which a wood insert slidingly fits presents a slot through which the table saw blade may project with minimal clearance when the blade is raised for operation with the throat plate mounted in place.

Abstract: A portable hand-cutting tool having a pair of perpendicularly arranged handles which is used for separating the trailing edge of bonded elevator or rudder skin panels following removal from an aircraft for repair. The tool features an electrically heated knife blade in combination with pneumatic controls for linearly vibrating the knife to achieve the cutting. The blade is fabricated from spring steel, has a leading edge sharpened with a full width taper, and is directly heated by way of electrical currents passing through the blade electrodes connected to the blade.

Abstract: A saw guide system having a high pressure gas lubricated bearing surface, an elastic bearing block support, a contoured bearing surface, and sonic regulated flow. The velocity of the gas gradually increases as it traverses the bearing surface. At the exterior edge of the bearing surface, where the gas exits, the velocity of the flow is Mach one, sonic velocity.

Abstract: A core collecting tray for a core blowing machine is provided which forms part of a slide which can reciprocally move longitudinally on tracks through sheaves, be lifted by a hydraulic cylinder that acts on a deck and with the assistance of vertical guides. The tray is adapted to cross travel by a further hydraulic cylinder and is fitted with a clipping template which can in turn travel upwards on additional guides and with the assistance of a third hydraulic cylinder.

Abstract: A knife cylinder for processing weblike material has at least one slot in its cylindrical surface for receiving a web cutting/perforating knife retained in place by a plurality of pressure medium cylinders distributed over the length of the knife. A rigid wall within the slot limits the extent of the pressure cylinders, and push rods extending through the wall may be provided for transferring pressure from the pressure cylinders to the knife.

Abstract: A cutting station comprising a bed; a work surface supported on the bed; a carriage traveling along the longitudinal axis of the bed by virtue of a first motor; two cutting members connected to two second motors; and a structure supporting the cutting members and second motors, and designed to travel, by virtue of actuators, along vertical slideways supported on the carriage, and to be carried by the carriage during traversing of the same. The bed comprises two fixed parallel beams supporting the work surface, and a first of which also supports two horizontal slideways for supporting and guiding the carriage. The center of gravity of the second motors lies within the space defined between the horizontal slideways.

Abstract: A portable electric cutting and scoring saw for use on laminated or veneer products is disclosed. The scoring saw is disposed in front of the cutting saw and turns in the opposite direction. The saw is designed primarily for an on-the-job cabinet maker where the use of large industrial bench saws are not feasible. The scoring saw cuts at a fixed depth and the cutting saw depth of cut can be varied by changing the blade with a different diameter. The laminate or veneer to be cut is bonded to the workpiece and the scoring saw eliminates chipping of the laminate or veneer. The scoring saw and the cutting saw lie in the same plane.

Abstract: A cylinder-piston unit including a central valve having a valve shaft, on which two spring plates with a pre-stressed restoring spring are disposed. One of the spring plates is engaged from behind by a cross-sectional enlargement of the valve shaft which has a valve closing element. The cross-sectional enlargement is formed by a collar of the valve shaft. Another cross-sectional enlargement comprises a sleeve, which is longitudinally displaceably guided on the valve shaft. On the side remote from the restoring spring, the sleeve has an enlarged inner bore, with which the enlarged inner bore complementarily fits over a snap ring that engages the valve shaft. As a result, a form-locking connection is attained between the sleeve and the valve shaft that assumes that a preassembled valve component unit will be held together even if the snap ring breaks.

Abstract: A valve block in a mine hydraulic system contains a non-return valve which is opened when a hydraulic control signal occurs to connect a pressure fluid feed or return line to a working chamber of an appliance such as a prop. A auxiliary valve is mounted in the block and is operated manually to relieve the working chamber even if the non-return valve remains closed.

Abstract: A beverage producing device which can be connected to and transported in the passenger compartment of a vehicle and more particularly, in the cab of a truck. The beverage producing device is operable from the power source of the truck or other vehicle. This beverage producing device comprises a canister having an interior reservoir or compartment for receiving hot water with a heating core located within the reservoir. A second compartment is located in vertically spaced relationship to the first compartment. A filter may be located at one of the compartments and contains a substance capable of producing the beverage such as for example, coffee grounds, tea leaves or the like. Water passing through the substance produces a beverage which can then be introduced into a cup capable of being disposed immediately beneath an outlet on the device.

Abstract: A method and apparatus for aligning and transporting workpieces from a pickup location to a seaming location on a worksurface. Workpieces are rotated through a user-determinable seaming angle so as to re-position the workpiece for sewing a pure straight/angled seam at the seaming location. The device includes a self-compensation system wherein seaming of the workpiece will commence at the leading edge thereof regardless of the initial position of the workpiece at the pickup location.

Abstract: The stacking cart includes a frame having a base, sidewalls extending from the base, a rear wall adjoining the side walls and a front portion that is substantially open and unobstructed. Channels are formed in the base in criss-cross fashion permit a stack of newspapers supported on the base to be tied in place in the cart. Wheels are provided at the base to permit wheeled movement of the cart from one location to another. A stand portion is also provided at the base to permit pivoting of the cart toward the ground to unload newspapers stacked in the cart. The newspapers are unloaded through a front opening of the cart. The cart thus permits stacking of newspapers, tying of the stacked newspapers in place in the cart, movement of the stacked newspapers from one location to another, and unloading of the stacked newspapers by tilting the cart to dump the stacked newspapers out of the front of the cart. Under this arrangement, there is no need to lift or otherwise manually handle the newspapers.

Abstract: The present invention provides a bale bumper for use on a machine capable of forming cylindrical bales of crop stock. The invention comprises a pair of swingable legs pivoted off each side of the machine and actuated by the tractor hydraulic system to engage a cylindrical bale during the bale discharge sequence and to push it rearwardly of the bale forming machine, thereby reducing the danger of machine damage from engagement with the bale following discharge and increasing baling efficiency by reducing the number of maneuvers normally associated with a bale discharge.

Abstract: A rotor arrangement for a bagging machine includes a tooth configuration providing both uniform power requirements and well directed compaction forces for uniform distribution of compacted crop material within a storage bag. The rotor arrangement includes right lead and left lead tooth groups wherein members of each right lead and left lead tooth groups sequentially enter a slot of a stripping comb beginning with the right and left, respectively, member of the group. The right lead groups occupy the same length portion of the rotor arrangement as corresponding left lead groups, but are angularly offset whereby rightward compaction forces of one group are followed by leftward compaction forces of the other group. The right and left tooth groups may be organized according to double-helix mounting patterns upon a mounting member. The net compaction force is substantially straight away from the rotor arrangement and has substantially uniform power requirements for uniform compaction within the storage bag.

Abstract: An offset lithographic printing unit (10) in a multi-unit printing press (35) includes a first register adjusting mechanism (80) and a second register adjusting mechanism (84). The first register adjusting mechanism (80) changes the surface speed of the plate cylinder (12) relative to the surface speed of the blanket cylinder (14) when the cylinders (12, 14) are being rotated in a printing operation. The second register adjusting mechanism (84) moves the plate cylinder (12) axially relative to the blanket cylinder (14) when the cylinders (12, 14) are being rotated in a printing operation. A controller (300) operates the first and second register adjusting mechanisms (80, 84) simultaneously when the cylinders (12, 14) are being rotated in a printing operation.

Abstract: A process of correcting a dry lithographic printing plate which comprises applying to an unwanted area of an ink-accepting area in the dry lithographic printing plate consisting of ink-repellent areas comprising a silicone rubber layer and ink-accepting area, a correcting solution comprising the following components:______________________________________ amount (parts by weight) ______________________________________ (a) Linear organopolysiloxane having three 100 alkoxy groups at both terminal ends (b) Titanium based condensation catalyst 0.1 to 5 (c) Organic solvent. 100 to 5,000 ______________________________________The plate surface retouching solution provides a coating which has a good adhesion to a light-sensitive layer and a good resistance to printing.

Abstract: In the by-pass zone of a car transfer track, in a terminal station of a detachable gondola lift or chairlift, the cars are driven by tired wheels. Transmission between two successive wheels comprises two toothed bevel pinions, wedged onto the wheel spindles, which engage with an inverter bevel pinion inserted between adjacent toothed benel pinions.

Abstract: A damping system for calming the motions of elements of railway vehicles, having a pulsating character such as the bodies or the axles, by damping devices includes an accelerometer (14) responsive to the direction of the motion to be damped, a circuit (18) for processing the signal issuing from the accelerometer and a hydraulic double-acting cylinder (12) interposed between the body and rolling element, a reservoir of oil under pressure (26) in selective communication with one or the other of the chambers of the cylinder (12) in response to signals delivered by the processing circuit (18), and a device for automatically regenerating at least a part of the energy or pressure in the oil reservoir by the relative motions between the body and rolling element.