Abstract: A process for the recovery of petroleum from a subterranean formation by the injection of a micellar displacement system consisting of a micellar solution and aqueous phase including the ammonium or alkali metal salt of an aminopolycarboxylic acid as a chelating agent. The chelating agent is present in concentrations in excess of the stoichiometric amount required to chelate the multivalent ion of the aqueous phase.

Abstract: A process for reducing the waiting-on-cement (WOC) time associated with the cementing of a casing string in an oil well involving the specific improvement of pumping into the well a highly retarded cement slurry containing a dispersed encapsulated accelerator, such as calcium chloride or anhydrous sodium metasilicate, wherein the encapsulating material is specifically selected such that it will melt at a temperature above the bottom-hole circulating temperature but below the bottomhole static temperature of the well to be cemented. Petroleum-derived waxes and petroleum-derived waxes in combination with vinyl resins, such as wax-compatible copolymers of ethylene and vinyl acetate, are particularly suitable as the meltable encapsulating material exhibiting excellent strength and abrasion resistance as well as serving as a moisture barrier. The improved process is particularly useful in cementing deep hot wells.

Abstract: A horseshoe is applied to the hoof by means of elongated strands or laces which are adhesively secured to the shoe after being threaded through holes in the hoof. The laces have a breaking strength less than that of the strength of the horse's hoof. The horseshoe itself includes a pad having a barrier sheet with loops on one side thereof integrally secured to the body member of the shoe, while loops on the other side provide means to facilitate adhesive securement to the hoof.

Abstract: A soil-cultivating machine has an elongated frame that extends horizontally and transverse to the direction of travel. A row of adjacent soil-working members are mounted on corresponding upwardly extending shafts which are geared to a common drive shaft and the members are driven in relative opposite directions to work a broad path of soil. Alternate soil-working members are slideable along beams of the frame so that debris does not jam the drive connections. The drive to the soil-working members includes an imput shaft to a gear box, which can comprise a reduction gear, and an elongated drive shaft that extends parallel to the frame and along which the slideable members are displaceable. The corresponding gears to the working members includes a pinion transmission on the drive shaft which is slideable within limits defined by an elongated key arrangement. Compression springs bias each slideable working member to a normal central position.

Abstract: A self propelled apparatus providing a cultivator, planter units and fertilizer tanks. A traction wheel assembly composed of a plurality of wheels adapted to propel the entire apparatus forwardly by pushing. The plurality of traction wheels being mounted from a traction wheel assembly frame and the traction wheel assembly frame being formed in two sections which are pivoted together at the mid-point thereof. The plurality of traction wheels being arranged in pairs and adjacent pairs of traction wheels being connected together for co-action therebetween. Separate means are provided for driving the traction wheels and such wheels being balanced and mounted from the pivotal frame will impart substantially no compacting forces to the treated soil. The apparatus includes structure and mechanism whereby the sections of the traction wheel assembly frame may be separated to thereby reduce the width of the traction wheel assembly and traction wheel assembly frame for road transport.

Abstract: A plurality of plow units are mounted to a main frame of a plow system for rotation about their vertical axes. The plow units are spaced at equal lateral increments and at uniformly increased distances from a pivot connection between the main frame and a traction vehicle. The plow units are ganged together by means of a guide beam; and a power actuator controls the motion of the guide beam in rotating the plow units so that their cut lines take a predetermined position relative to the main frame. As the plow system is then used to plow ground, the main frame swings about its pivot connection to the tractor until the plow units line up with the direction of travel of the tractor, thereby adjusting the spacing between plow units automatically. The rear plow unit is mounted to a tail section which is pivotally mounted to the main frame and includes a rear wheel for supporting the distal end of the main frame and for steering the system as the tractor turns.

Abstract: The plow system may carry as many as 10 or 14 individual plow units. All of the units are connected together by a tie rod and may be pivoted in unison relative to a main frame. By pivoting the units, they may be opened or closed to adjust the width of cut between adjacent units over a continuous, wide range. The main articulated frame includes a forward frame section with a main beam inclined relative to the direction of travel of the vehicle, and the rear frame section with a main beam in axial alignment with the main beam of the forward frame section. The forward frame section and rear frame sections are pivotally connected together for rotation about a horizontal axis to permit the system to follow the contour of the ground extending in the direction of travel. The system includes a forward furrow wheel, a rear furrow wheel, and a steerable intermediate support wheel which rides on unplowed ground ahead of the system and is steered as a function of the adjusted position of the plow units.

Abstract: A plough share made of metal having at least two spaced tongues pressed out of the metal and projecting rearwardly at an angle, the two tongues being adapted to engage in complementary holes formed in the frog of a plough. The plough share also has holes therein, these being formed by the tongues being pressed outwardly therefrom. These holes are covered by a reinforcement plate, which is attached to the side of the plough share opposite to the side to which the frog is to be attached.

Abstract: In the process and apparatus for removing the drillings from the drilling te of a drill described, removal is effected through a conduit, extending along the axis of a drill and possibly an adapter for a drilling machine, by a vacuum provided by a compressed-air stream traversing the removal conduit, said compressed air also serving to blow the drillings sucked into the conduit out of the conduit and away from the drilling site.

Abstract: A rock drill has a housing accommodating pistons defining working chambers. Rotary drive of a drill steel has an overrunning clutch and a screw pair. The screw pair is arranged between the pistons and is formed by outer and inner helical threads respectively provided on these pistons. One of the pistons is kinematically connected with the housing, and the other piston which cooperates, during the drilling, with a chuck receiving the drill steel shank is in force transmitting connection with the rotary drive of the drill steel.The invention is aimed at lowering vibration of the rock drill housing by arranging the screw pair of the rotary drive between the pistons.

Abstract: The removal of a lining, for example of wood, from a pile driving head is a very difficult and time-consuming operation. In order to remove the lining easily from the pile driving head, at least one armature is embedded in the lining to be used in the pile driving head, said armature being provided with fastening means, and a tool is connected with the armature by means of said fastening means for removing the lining. When the lining is stroke down during the pile driving operation, the armature with at least part of the lining is drawn from the pile driving head by means of said energized tool supporting on the driving head and/or a further part of the lining.

Abstract: A rod-shaped, manually operable or controllable handpiece is disclosed which e.g., comprises an annular actuating member positioned in a rod-shaped handle portion having actuatable means and a casing for enclosing the actuatable means with which the actuating member is in operative connection. The actuating member comprises at least one ring or disc movable between two positions substantially perpendicularly to the longitudinal axis of the casing, the largest diameter or corresponding external dimensions of said ring or disc being larger than the height or thickness hereof, the axis thereof in said central position being parallel to the longitudinal axis of the casing, and the external side thereof in the central position flushing with or extending equally outside the surface of the casing and whereby the axis of the ring in the outer position is displaced parallel to or forms an acute angle with the axis of the casing.

Abstract: A well jar is characterized by inner and outer telescoped members held from relative displacement by a latching member having an extending portion thereon. Imposition of an axially directed triggering force exceeding a predetermined magnitude is transmitted against the biasing force of a resilient member through a force transmitting arrangement to a latch release member provided with an opening therein sized to receive the extending portion of the latching member. The release member rotates in a predetermined angular direction to come into registry with the opening therein to receive the extending portion of the latching member as the latching member displaces radially outwardly to release the inner member. Upon release, the inner member responds to the axially directed force to drive impact surfaces disposed on the inner and outer members into an impact-producing engagement.

Abstract: A raise drill having a central drive stem to which a surrounding cutter mounting frame is attached, the cutter mounting frame supporting a plurality of rotary cutter units. One or more inboard cutter units each include a shaft and a rotary cutter journaled for rotation on the shaft. One end of the shaft is inserted in a bore extending into the side of the stem. A yoke member receives the outer end of the shaft. The yoke member is supported by a mounting block secured to the frame. The mounting block has first and second intersecting planar surfaces, the first surface extending substantially parallel to the axis of the bore and the second surface extending in an obtuse angle to the first surface facing the stem. The yoke member has a first surface which slidably engages the first surface of the mounting member, and a second surface spaced from the second surface of the mounting member, allowing axial movement of the cutter shaft into and out of the bore.

Abstract: This earth boring drill apparatus has a cutter mounting leg extending from one side of a drive stem and a removable cutter assembly, including a fixed shaft and cutter journaled for rotation on the shaft supported between the drive stem and the mounting leg. The stem has a bore for slidably receiving the inner end of the shaft. The cutter mounting leg terminates in an end surface extending parallel to the axis of rotation of the bore and shaft. A shaft supporting lug projecting from the outer end of the shaft has a surface which is parallel to the end surface on the leg. The opposed surfaces respectively have a V-shaped projection and mating groove which provide lateral alignment and prevent shaft rotation while permitting the shaft to be movable in an axial direction by an amount sufficient to permit the shaft to be withdrawn from the bore.

Abstract: A weighing system for weighing a vehicle such as a torpedo car containing a body of molten metal where the center of gravity of the body of molten metal may shift in an uncontrollable manner within the vehicle and which vehicle has a first group of axles at the forward end thereof and a second group of axles at the rearward end thereof with each axle having at least two wheels thereon and wherein the axles of each group are symmetrically spaced about a center through which the load is applied to the axle group. The weighing system includes first and second weighing devices. The weighing devices are located so that the first weighing device engages the wheels of a fraction of the axles of the first group of axles and the second weighing device engages the wheels of a fraction of the axles of the second group of axles.

Abstract: Highly accurate and versatile computing scale which is particularly suitable for postal use. The platform of the scale is mounted on and supported by a single load cell in a system requiring no levers, pivots or other moving parts. Weight readings are averaged on a moving average basis, and in one preferred embodiment the scale has an accuracy on the order of 1/32 ounce over a range of 70 pounds. With no load on the scale, any drift is cancelled by increasing or decreasing the net weight reading in small increments during successive counting cycles to maintain an accurate zero reference. The scale includes a keyboard through which a postal clerk can enter information about the destination and type of service desired, and a zip code to postal zone converter is included for automatically determining the postal zone from the zip code. Digital displays indicate the weight and postage to both the clerk and customer.

Abstract: An apparatus for measuring loads with the use of a plurality of measuring points, for instance in motor vehicles, in which one load-supporting measuring element is placed at each measuring point and contains a resilient material, such as rubber, for taking up lateral forces acting upon the measuring element.

Abstract: This invention relates to shop scales with digital weight indication. The scales comprise a balance lever, knife edge supports, directional supports and a damper, the balance being carried by two pairs of knife edges lying in the same plane, a pick-up arm and means directly supporting the pick-up arm from the balance lever and with the pick-up arm being deflectable, the deflection of which is converted in a manner previously known in itself into a digital display with the aid of strain gauge strips.

Abstract: A shock absorber for a motor vehicle suspension includes a piston construction having flow control valving that becomes more restrictive during the life of the shock absorber to compensate for the reduction in friction damping in the suspension during usage. The piston valving includes a flow passage surrounded at one of its ends by an annular land that forms a valve seat. A valve element is urged to a closed position against the seat by the cumulative force of a primary spring and a secondary spring. The secondary spring provides a spring force countering the force of the primary spring but is constructed to progressively take a permanent set after repeated cycling whereby the cumulative force of the two springs urging the valve element to a seated condition will increase during the service life of the shock absorber.

Abstract: Device attachable to snowmobiles and other ice and snow vehicles which comprise an endless track or belt and a slide rail. The device engages ice, snow or water on the surface alongside the vehicle and throws or directs such aqueous material against the slide rail and portions of the belt adjacent the slide rail to lubricate the interface between the slide rail and belt.

Abstract: A control for selectively controlling operation of left and right side drives for providing a selective steering drive of a vehicle. The control includes a single manually operable control lever and mounting structure for transmitting selective movement of the control lever through suitable push-pull linkages to the vehicle drives. The control is arranged to effect a change in the gain of output lever portions thereof in effecting the desired controlled steering operation of the drives. The change in gain is controlled by the engagement of rollers associated with the control lever against output levers associated one each with the push-pull linkages and left and right side vehicle drives.

Abstract: An automatic braking safety belt retractor reel includes a reel provided with a first ratchet reel rotatable with a shaft and spring biased in a belt retracting direction. A braking pawl is movable into engagement with the ratchet reel by a rockable second ratchet wheel which is advanced by a second pawl pivoted on an inertial wheel and urged into engagement with the ratchet wheel by a cam on the shaft when the inertial wheel lags the rotation of the cam as a result of the rapid shaft acceleration. An armature of magnetic material is mounted on a second pawl and an electromagnet having an annular core, when excited, attracts the armature to prevent the engagement of the second ratchet wheel by the second pawl and the braking of the reel. The electromagnet is excited upon occupation of the seat or closing of the vehicle door and is de-excited upon buckling of the belt.

Abstract: An apparatus to automatically regulate the speed of a motor driven vehicle. An actuating member movable between an operative and an inoperative position, preferably into or out of cooperative engagement with the accelerator, is in turn operated by a connecting device. A speed control arrangement drivingly engages the connecting device when the actuating member is in its actuating position to in turn operate that part of the vehicle which controls its speed. A control circuit receives actual and ideal speed signals and emits a difference signal which in turn operates the speed control arrangement to in turn operate the connecting device.

Abstract: The noise from gas and oil burners can be reduced by using a burner quarl comprising a ceramic tube which is permeable or which has at least one permeable zone along its length, and which is surrounded along the permeable part by parts of the length of the tube by at least one sound absorbing chamber.

Abstract: The rung assembly is made of two piece construction and of metal while the siderail is made of a reinforced plastics material. The rung assembly includes a rung having a hollow end and a flanged fitting which is secured over the hollow end of the rung by swaging of the hollow end and fitting under a longitudinally applied compressive force. The compression force forms peripheral beads on the rung and fitting which interlock with each other. The rung assembly is secured to the siderail by any suitable fastening means such as rivets, bolts and the like which pass through the flange of the fitting and siderail.

Abstract: A lubricating oil pump comprising a distributor rotatably fitted in a cylinder chamber of a pump body, a plunger fitted to said distributor for the purpose of forming a pump chamber between said distributor and said plunger, said plunger being rotatable integrally with said distributor in rotational direction but being capable of performing relative movement in thrust direction in respect to said distributor, a cam and protuberance formed on one end face of said plunger, and a cam shaft comprising a cylindrical guide-column portion and control cam portion respectively engageable with said cam and protuberance for the purpose of controlling the stroke of said plunger, said lubricating oil pump thereby making it possible to manufacture at a low cost, being capable of maintaining high pumping efficiency and making it possible to control the delivery.

Abstract: An air line lubricator with safety device for automatically actuating an air actuatable member located outside of the lubricator. The air actuatable member may be a valve which controls a tool, or a signal which indicates that the oil level in the lubricator bowl has fallen below a predetermined level. The lubricator bowl contains oil and pressurized air and an air tube which receives pressurized air from the bowl when the oil level is below a predetermined level. The air tube has a relatively small intake end opening and a relatively wider internal diameter. An oil level controlled member may be a float or a float controlled piston which is movable relatively to said tube opening and is supported by the oil when the oil level is above a predetermined level. The face of the oil level controlled member has mounted thereon a tiltable member for engagement by the air tube open end.

Abstract: The rotor of a disc brake apparatus for bicycles comprises a spider that flatwise overlies the outer face of one spoke flange on a wheel hub and is secured by spokes that have their hook portions extending through it and that spoke flange. A flat annular disc has radially inwardly projecting tabs that are secured to the spider and hold the disc in axially spaced relation to the spokes. A U-shaped caliper body straddles an edge portion of the disc. On a shorter leg the body has a fixed brake pad; on its longer leg it carries a movable brake pad that has a compound motion for self-energization. The body is movable in directions parallel to the wheel axis and is carried, in part, by a cup-shaped adapter coaxial to the wheel shaft and confined between a bearing cone for the wheel and an adjacent frame portion. Portions of the body straddle an elongated frame member to confine the body against rotation around the adapter.

Abstract: A disc brake including a pair of cams which contact a pair of cam followers rotatably mounted to pistons slidably carried in apertures provided to one leg of a floating caliper. The cams are secured to a shaft rotatably carried by the caliper. The cams are rotated by the shaft to move the rotary cam followers and pistons in the apertures. The pistons move one brake pad into friction contact with one side of a brake disc. A second brake pad carried by the other leg of the caliper is moved into friction contact with the other side of the disc by the reaction force through the cam shaft and caliper.

Abstract: A caliper type disc brake actuated by threaded members of a screw and nut assembly in which one of the members is axially movable but held against rotation and the other threaded member is rotatble relative to the caliper. The rotatable member is mounted for the application of force against the caliper during braking. Clamping force is applied to a friction lining carrier upon rotation of the rotatable threaded member in one direction. The threads of the threaded member have a helix angle and shape to cause overhauling rotation of the rotatable threaded member in the opposite direction upon release of the clamping force on the friction lining carrier for automatic return of the brake parts from a braking position to a position away from the disc.

Abstract: A vehicle anti-skid brake control mechanism consisting solely of mechanical components, particularly for use in two-wheel vehicles comprising a first brake device for primarily absorbing vehicle travelling energy and a second brake device for secondarily absorbing a vehicle travelling energy when the braking force applied by the first brake exceeds a critical level of the braking force corresponding to wheel speeds. The apparatus further comprises a rotation overdrive device adapted to overdrive a rotative inertial body and centrifugal weights in the same direction as that of a wheel hub so as to minimize the shock produced when the braking force transmission means is actuated. A sliding rod is provided with an outer end portion thereof outwardly extended from the axle shaft and has marks indented thereon to visibly sense wear of clutch plates.

Abstract: A brake adjuster mechanism is of the type operable by a piston moving a threaded spindle axially during braking with a threaded nut thereon adjusting the spindle position. Two control members movable with the spindle are held apart by a spring between shoulder stops on the nut and they serve to position the nut between two opposed clutch surfaces to permit nut rotation until a predetermined slack setting is achieved.

Abstract: A brake for bicycles and the like, comprising a finned shoe having a pad of friction material thermally bonded thereto. The fins provide improved heat dissipation from the brake shoe, and the bonding provides improved heat transfer to the shoe. The pad is free on at least three sides so that heat is transferred away from the braking interface efficiently.

Abstract: A rotatable braking member, for example a disc or a drum, for a vehicle brake is provided with a separate plurality of spaced cooling fins having a co-efficient of thermal conductivity higher than that of the braking member to dissipate heat to a flowable working medium within passages between adjacent fins, and at least some of the passages are substantially uninterrupted circumferentially with respect to the direction of rotation of the braking member.

Abstract: A shock absorber, in an exemplary embodiment, especially suited for motorcycles and the like characterized as being fabricated of a minimum number of components assembled in a manner which permits rebuilding of worn components and wherein selected variable dampening is obtained through the provision of external adjustment device for varying the degree of dampening. The adjustability features allow for variable jounce and rebound factors to accommodate both normal and severe driving conditions and to permit compensation thereof, all without dismantling or demounting of the shock absorber from the vehicle with which it is associated. Adjustment in one instance comprises metering the hydraulic fluid and in the other instance varying the disposition of the main compression spring. Structure on the body of the shock absorber is provided to dissipate heat thereby increasing the quality of performance of the shock absorber during jounce and rebound conditions.

Abstract: A suitcase having rolling means at the bottom is provided with a retractable handle including a pair of longitudinally extendable tubes connected to a sidewall of the suitcase at their proximal ends and connected at their distal ends to a cross-member forming a grip, said tubes received in retracted position within said sidewall. In extended position, said tubes in combination with the top of the suitcase providing a luggage supporting surface for additional pieces of luggage. The suitcase further having a pair of pivotal support arms attached to the bottom of the suitcase which in extended position provide an additional luggage supporting surface.

Abstract: A roller for the continuous electrolytic processing of metallic or metallized strip materials which is a good electrical conductor is provided with a circuit for cooling fluid. It has two forged flanges each defining a hollow half shaft along a common longitudinal axis. The two flanges are made fast to the respective ends of a hollow cylindrical body. Proceding from the outer cylindrical surface of the assembly of the flanges and of the body there are provided successively radially outwards from said surface: a continuous layer of uniform thickness of a corrosion-resistant metal, a continuous layer of a metal which is a good conductor of electricity with constant cross-section for the passage of electric current, the zone of the face of the roller being also provided with an outer coating of a hard metal. The flanges may have an internal cup shape. A cooling liquid can flow through the hollow shafts.

Abstract: A sealed oil-contaning clutch having a novel release mechanism. Instead of having the usual externally located bearing, the release mechanism employs a thrust bearing located inside the sealed clutch enclosure. This results in a saving in space and cost, and since the bearing is exposed to the oil, its life expectancy is increased. The clutch also has but a single cover member which serves as both a structural and a sealing member.

Abstract: A noise is generated unavoidably owing to hunting phenomenon that appears in process of increasing or decreasing torque to be transmitted by a hydraulic coupling in a hitherto known type, when it is subjected to change of the ambient temperature.A purpose of this invention is to provide a new and unique hydraulic coupling which enables hydraulic connection to be effected very quickly in such a way that engagement or disengagement between ferrite and magnet is applied to transfer mechanism in hydraulic coupling, depending on the ambient temperature.The above purpose of the invetion has been accomplished as follows.Magnetical attractive force between ferrite and magnet is predetermined to overcome spring force in a normal temperature, and working temperature for this new mechanism according to the invention is selected around at Curie temperature of said ferrite material.

Abstract: A commercial vehicle driven by an injection internal combustion engine with a transmission including a hydrodynamic coupling or hydrodynamic torque converter having a by-pass clutch and with an engine brake actuatable by way of a switch; an adjusting mechanism which is operatively connected with the controller of the injection pump includes an actuating cylinder containing an actuating piston adapted to be acted upon by a pressure medium and controllable in dependence on the engine brake; means which are provided for influencing the adjusting mechanism during the operation of the internal combustion engine, are interconnected between the engine brake switch and the adjusting mechanism and, upon disengagement of the by-pass clutch shortly prior to reaching the idling rotational speed of the internal combustion engine, effect an automatic adjustment of the controller of the injection pump from the zero fuel feed position to the idling position.

Abstract: A clutch disk for motor vehicle main clutches which is equipped with a disk member carrying the friction linings and torsionally elastically arranged with respect to a hub member, whereby for a multistage torsional elasticity, several springs or spring sets with different characteristics are arranged in windows of one of a hub flange or of the disk member and of a lateral sheet metal member rigidly connected thereto, which cooperate with correspondingly larger windows in the respective other part; friction damping devices are thereby coordinated to the springs, whereby one of the friction damping devices is operable in the idling range and the others are operable in the operating range and the start of operation thereof are determined by control means engaging in the corresponding windows or cooperating with the corresponding spring ends; at least three spring stages of continuously harder characteristics, one friction device for the idling range and two separate main friction devices with control members for

Abstract: A pressure limiting arrangement is disclosed for automatically reestablishing full clutch engagement pressure to a hydraulic pressure actuated clutch of a vehicle whenever the operator, by the manipulation of an inching valve, attempts to slip the clutch above a predetermined partial engagement pressure and includes a mechanical biasing device connected to the inching valve and effective in overriding the manual control thereof to shift the valve to its full clutch engaging position, an actuator connected for effecting the disengagement of the biasing device to allow normal operation of the valve, and a control system to effect the selective operation of the actuator and including a first device responsive to a predetermined application of the manual control member of the valve to effect the initial disengagement of the biasing device and a second device responsive to the predetermined partial clutch engagement pressure to effect the reengagement of the mechanical biasing device.

Abstract: The press brake safety device includes a vertically movable guard for moving in advance of the press brake ram, a lightweight protector bar movably positioned on the lower edge of the guard for vertical upward movement and means operably connecting an actuation means for the ram to the ram drive means to control ram actuation. Air operated means connect to these ram drive means to render the same inoperable, and air operated control means connect the protector bar and the air operated means to actuate such last named means when the protector bar is moved upwardly in relation to the guard as the guard is being moved downwardly by actuation of the press brake for work engaging action.

Abstract: A low loss, multiple element wet clutch mechanism for connecting two mechanical members to each other wherein the two members are concentric about a common axis and either or both are supported for rotation about the common axis. The connection is made by clutch elements which are forced together by an actuator. Clutch elements on one side of the interface are keyed to one member to limit rotational movement about the axis to that of the member while clutch elements on the other side of the interface are keyed to a rotating annular carrier element carried by the second member. A second annular element mounted on the same member as the carrier is keyed to the member for rotational movement about the axis but is free to translate axially of the member to engage the rotating annular carrier element to key the clutch elements carried by it to that member. A clutch engaging actuator when actuated first causes the two annular elements to engage and thereafter the clutch elements.

Abstract: A platform conveyor device for transporting loads, comprising a plurality of spaced apart elongate members alternate ones of which carry rotatable bearing members and are reciprocatable vertically by compressed air hoses so that in an uppermost position loads can be transported over a load bearing surface formed by remaining ones of the members and in a lowermost position loads rest on the load bearing surface.

Abstract: This invention is a coin operated vacuum apparatus including a housing means mounted on basic support means; a vacuum power means enclosed by the housing means; a coin control means connected to the vacuum power means to control operation thereof; and a hose assembly connected to the vacuum power means. The housing means is constructed of fiberglass material having a cover head assembly and a removable receptacle assembly to receive refuse material therein. The vacuum power means includes a filter and motor assembly having a pair of vacuum motor members mounted on a motor head support assembly with the entire unit easily removable for maintenance purposes. The filter and motor assembly includes a filter assembly associated with each vacuum motor member to provide efficient filtration. The coin control means includes a time meter assembly to be actuated by a coin for a predetermined time period to energize the vacuum power means.

Abstract: A coin totalizer having a strip wire operable by nickels, dimes and quarters to step a ratchet member forward from a zero position one step for a nickel, two for a dime, and five for a quarter, having a return spring for the trip wire and a return spring for the ratchet member, and having a range up to a total of $1.30, adapted to handle vending at three different prices with the capability of a differential of up to 70 cents between the lowest and highest prices.

Abstract: A fixing device for a type-carrier disk in which the selection shaft includes a selection shaft, a flange defining a rotation plane and a conical end. The type-carrier disk comprises a central part cooperating with the flange and a conical seat for housing the conical end of the shaft. The central part of the disk has two apertures disposed symmetrically with respect to the conical seat for housing fixing members pivotally mounted on the flange. Resilient elements cooperate with the fixing members for holding the central part of the disk tight against the flange and the conical seat tight against the conical end of the shaft. A knob of the central part is adapted to remove the disk from the selection shaft against the action of the resilient elements.

Abstract: A combined mechanism for impacting a print member and advancing a printing ribbon of a high speed printer wherein an electromagnet, located near and on a yoke mechanism containing the print stem shaft of the print head, operate together with a linkage mechanism which is attached to the yoke mechanism, to impact the print head upon a platen and advance a printing ribbon one increment, the linking mechanism including several linking members and a stop which allows free movement to a first linking member and a cable which during energization is drawn taut but goes slack during de-energization and remains slack after the print head impacts and rebounds to a neutral position.