Abstract: In an electrical scale, the weight of the load when the scale is in equilibrium is represented by counting pulses summed up over predetermined time intervals. The sum is displayed digitally. For such a scale, a control apparatus is furnished which automatically decreases the predetermined time intervals and also the number of digits in the display in response to a signal indicating that the scale is operating in a transient condition.

Abstract: A hitch adapter connects a tractor drawbar to an implement hitch pin and includes a cast housing having top and bottom walls and a forwardly open chamber that receives the rearward end of the tractor drawbar. The housing has a pair of vertical openings elongated in a transverse direction and receiving vertical bolts having nuts at their lower ends which are tightenable to clamp the housing between the head of the bolt and the nut. The shanks of the bolts are disposed on opposite ends of the drawbar and are shiftable laterally in the openings to engage the opposite side of the drawbar to limit lateral movement of the housing relative to the drawbar, the nuts being tightened to clamp the bolts in the selected position. Serrated surfaces are provided on both the top and bottom of the housing around the openings, and each bolt is provided with a pair of washers having serrated surfaces that respectively engage the serrated surfaces on the top and bottom of the housing.

Abstract: In a transmission remote control assembly of a tilt-cab type vehicle a first link mechanism connected to a change lever, a second link mechanism connected to a transmission lever or levers and at least one connecting means comprising a pair of connecting members respectively connected to the first and second mechanisms are so arranged that when a cab body is in a horizontal stationary state, the pair of connecting members are in connecting engagement whereby the change and transmission levers may co-operate whereas when the cab body undergoes inclining movement, the pair of connecting members are disengaged so as to disconnect the first and second link mechanisms.

Abstract: A rapidly reversible air propeller shroud system is provided for operating an air cushion vehicle more efficiently both in forward and reverse direction travel and maneuvering modes. The shroud includes a sectionally rigid portion of aerodynamically efficient form for operating the vehicle in one direction of travel; and in combination therewith an otherwise inoperative inflatable collar which may be rapidly inflated to expand so as to modify the aerodynamic characteristics of the shroud for operation of the propeller efficiently in reverse direction thrust mode.

Abstract: A noise control device which produces behind it an enlarged sound reducing region is disclosed. The device comprises a hollow structural body composed of a plurality of elongate hollow passages which are different in length and constructed such that the passage length is made the longest at a substantially center part in a vertical direction and is made gradually shorter from the center part toward upper and lower edges of the hollow structural body. The upper and lower edges allow direct propagation sound emitted from a noise source to pass thereover and therethrough.

Abstract: A braking system including a sensing lever operated when the forward portion of a chain saw moves upwardly with a jerk due to a kickback phenomenon or the hand of an operator slips from a handle during operation, a brake device, and a direct-acting interlocking member connecting the sensing lever to the brake device. A force exerted on the sensing lever and a force of a spring locking the sensing lever are both transmitted to the brake device through the interlocking member.

Abstract: An electromagnetic friction brake whose components are held in assembled relationship by pins which are received with a press fit within holes in an electromagnet and an end plate and which are received with a loose fit within holes in an armature. By virtue of the pins, an assembly gage may be used to automatically establish an air gap of desired width between the armature and the electromagnet when the brake is assembled.

Abstract: A disc for a disc-brake used in a vehicle. The disc is, on the whole surface portion thereof where it contacts the pad, provided with a number of circular machined scores, or in some cases spiral scores which, having a small pitch, are almost circular the center of scores being at the rotation center of the disc. The scores are ground or cut having a surface roughness of 2 microns or more taken in ten point height, that is, in average height at randomly selected ten points, by ISO R 468.

Abstract: A piece of hand luggage having a frame including chamber means for carrying a jacket in a draped, unfolded mode, and a handle mounted on the frame so as to be engaged by a hand of a person carrying the luggage in such a manner as to permit the person to carry the frame with an arm associated with the hand engaging the handle disposed extending substantially vertically downwardly. The frame is formed from a pair of enclosure portions, the upper area of each of which is provided with a pair of substantially coplanar ledges jutting toward one another from associated side walls which are spaced when the two enclosure portions are in a position abutting one another along mating surfaces so as to provide a well in which the handle is disposed.

Abstract: A friction clutch comprising a driving and driven members to be operatively connected with or disconnected from each other by being axially pressed to or separated from each other, respectively.Both members are coupled through elastic damper means in engagement of the clutch to thereby provide cushioning service when the clutch is being engaged against an impulsive torque applied to the driven member particularly by a heavier weight of vehicles.

Abstract: The invention resides in firstly conveying tiles edgeways, while "on flat", in a conveyor which terminates in a discharge station which is vertical or nearly vertical, and transferring the tiles to a further conveyor which conveys them at reduced speed, while they are supported on edge, so that the tiles stack in face to face juxtaposition. The tiles can then be removed as a stack from the further conveyor.

Abstract: A cup comprising a bottom and sidewall, the cup being shaped so that it can be assembled into a stack between other identical cups, in upright attitude, into a condition in which:(a) the upper of two adjacent cups is supported by the cup below, without jamming,(b) the two adjacent cups define between them a space,(c) the two adjacent cups are restrained from axial displacement away from each other unless predetermined axial separating forces are applied to the two cups,(d) the space is cut off from atmosphere by a seal, or near-seal, provided by cooperation between a circumferential surface on one of the two adjacent cups and a circumferential line or surface on the other of the two cups,(e) the support is provided in conjunction with the seal or near-seal, or by separate cooperating portions of the two cups,(f) and the restraint is provided by the seal or near-seal, or by separate cooperating portions of the two cups,The cup being distinguished by the features that:(g) the cup is of integral construction, of

Abstract: A disposable, self-stabilizing tray, which is shipped in a flat condition and which forms a stable, non-collapsible structure as it is being erected, is disclosed. The tray includes a transverse downwardly directed panel partition which extends between the top and bottom panel members, and which, as the tray is being erected, cams a longitudinal panel into a downwardly directed direction. A protrusion or projection from the longitudinal panel is thus cammed into a locking notch which is formed by a recessed shoulder of an opening in the bottom member of the tray. An integral blank useful for constructing the tray is also disclosed.

Abstract: A vortex cleaner for separating a gaseous or liquid suspension, as for instance a paper pulp suspension, into fractions comprises an elongate vortex chamber which has a circular cross-section and tapers gradually, over at least part of its axial length, towards one axial end of the chamber. The larger end of the vortex chamber is provided with a tangential inlet for the suspension to be treated and an axial outlet for a lighter fraction of the treated suspension. The smaller end of the vortex chamber is provided with an axial outlet for a heavier fraction of the treated suspension. The tapering portion of the vortex chamber consists of a plurality of chamber sections, which are disposed one after the other in axial direction and are in direct communication with each other.

Abstract: The food material to be processed is alternately transferred from two sources to an elongated treating chamber. The apparatus for carrying out the method includes rotary valve means employing two pocket areas, each pocket area including a plurality of pockets with each pair of diametrically located pockets having an interconnecting passage. The pockets of one area are angularly displaced or out-of-phase with the pockets of the other area. Owing to the out-of-phase relationship, the food material to be processed is alternately received by one pocket of one area, then by the next pocket of the other area and so on through each revolution of the valve means in which the pockets are contained, the material being discharged in the same out-of-phase relationship through the interconnecting passages and diametrically disposed pockets into the inlet of a pressurized elongated treating chamber.

Abstract: A high density polyethylene molding frames an opening in a casting through which hydraulic hoses must pass to protect the hoses from abrasion in contacting the edges and sides of the casting opening. The molding is flexible and resilient to enable it to be snapped in and out of the opening in the casting while providing a generally frictionless surface against which the hoses may be guided in their normal movement through the opening under operating conditions.

Abstract: A cross support assembly is provided which is useful, for example, in earthworking equipment. Such an assembly can be mounted to extend between two lateral supports. A bracket extends laterally from the assembly and can serve as a supportive pivot for a bucket or the like. The assembly is generally hollow and acts as a torsion member. A bulkhead is welded in the cross support assembly and is positioned to directly receive forces exerted on the bracket. Usually the bracket and bulkhead are of unitary construction. The bulkhead extends within a generally tubular cross-member which also forms a part of the assembly and is attached between the lateral supports and into contact with the interior of the tubular member. Forces exerted on the assembly are thus generally compressively applied to the bulkhead welds adding to the overall strength of the assembly.

Abstract: A cap and container are incorporated in a combination having apparatus to provide a convertible feature such that a selection can be made between, on the one hand, a precautionary arrangement to prevent children from obtaining access into the container and, on the other hand, an easy open arrangement.

Abstract: A container such as a soft-drink bottle, provided with a narrower upper neck portion threaded in one direction and a wider lower neck portion threaded in the opposite direction, is hermetically sealed with a cap divided by a frangible zone into top and bottom parts having threads complementary to those of the corresponding neck portions. The cap is placed on the container neck with a rotary screw motion which matingly interfits the upper threads while the lower threads are interengaged with a snap fit as the bottom part of the cap elastically expands.

Abstract: A base is securable to the lid of a conventional container assembly which also includes a vessel. The base includes an inwardly directed flange which abuts the top panel of the lid and a downwardly directed flange which encircles the skirt of the lid. Upstanding from the base are lugs which provide diametrically opposed shoulders for receiving a leverage tool for the purpose of rotating the lid relative the vessel.

Abstract: A container support apparatus for a container having an outer vessel and an inner vessel within. A first support fixed to the inner vessel projects towards the outer vessel. A second support fixed to the outer vessel projects towards the inner vessel. A third support contacts the first and second supports to form a support unit which substantially prevents contact or touching between the inner and outer vessels. Means for heat insulating the first vessel from the second vessel through the support unit is included.

Abstract: A recloseable dispenser packet is disclosed wherein articles, such as moisture impregnated towelettes, are readily accessible to the user. Both semi-rigid and flexible embodiments of the invention are described, and each embodiment employs a resealable closure whereby the packet may be opened for dispensing of individual towelettes and thereafter closed to maintain the packet in a hermetically sealed condition.

Abstract: Disclosed is a housing providing a cylindrical chamber vertically oriented, which accommodates a mass of randomly entwined coil springs. An impact member is rotated within the member closely adjacent the bottom end wall of the chamber. As the mass of springs is moved in the chamber by the impact member, individual springs disengaged from the mass by impact move through a discharge opening adjacent the top of the curved side wall of the chamber and through a tangential discharge chute to automatic assembly apparatus or the like.

Abstract: A method for pelletizing liquid and viscous products. A body of the liquid or viscous material is enclosed within a chamber having discharge orifices or nozzles at the bottom of the body of liquid. There is a body of gas above the liquid which is subjected alternately to increased and decreased gas pressures so that the pressure on the body of liquid is first above and then below atmospheric pressure. That causes the product to be discharged from the orifices in droplets. The droplets are then solidified to form pellets. A predetermined liquid level is maintained within the chamber. The changes in gas pressure are produced by operating a valve which connects the body of gas in the chamber alternately to a suction line and supply line for gas under pressure.

Abstract: A bow-mounted arrow quiver includes an elongated frame, a shaft holder and support, and an arrowhead-receiving housing and shield. A compartmentalized member of resilient material having a plurality of openings or recesses therein is disposed within the housing for engaging and retaining the arrowheads in a snug and secure manner to prevent the arrows from slipping out of place or falling from the quiver, and also to prevent damage to the arrowheads while at the same time preventing any rattling or other such sounds. A mounting plate adapted for permanent securement to a bow handle or other surface cooperates with a mounting pad and latch means on the frame to releasably but positively mount the quiver to the bow. A forward stabilizing clip assembly may be included to further stabilize the mounting of the quiver. A special compartment is preferably included in the arrowhead-receiving member and contains a scent-retaining element for any of a variety of hunter's scented liquids.

Abstract: An article carrier mounted on a generally flat exterior surface of an automotive vehicle and consisting of plurality of spaced parallel slat assemblies which are fabricated, for example, of roll-formed sheet metal and are provided with fastening elements, such as tie-down members, having a body that is located at least in part within the interior of the slats; the slats being formed with openings which provide access to the fastening elements in order that containers, ropes, straps, or similar article securing devices may be cooperable with the elements in securing articles to the article carrier.

Abstract: A knockdown carrier for a plurality of juxtaposed rectangular frames supporting canvas paintings and similar artwork, to bind and maintain them in spaced relation by means of pairs of rigid bars at longitudinally displaced points along said frames. Each pair of bars is provided with adjustably fixed spacer members which extend inwardly between the frames, with the respective members at the top and bottom being in alignment with each other to accommodate frames of different thicknesses. A flexible band encompasses the outer portions of the superposed rigid bars and the frames therebetween to bind and integrate the assembly for storage or transport, and in the latter case, a balanced handle device is detachably connected between the longitudinally displaced binding and spacing units. Stretcher rods between the bottom rigid bars and stabilizer buses connected between the top rigid bars may be used as accessory devices to insure the tightness of the individual and groups of frame assemblies.

Abstract: A compact tacker for driving fasteners into a workpiece includes a housing defining a handle and a nose portion. A driver is reciprocally mounted within a drive track defined within the nose portion. The tacker also includes a magazine assembly slideably mounted within the housing including a forward end that is positioned adjacent the drive track such that the driver reciprocates between the nose and the forward end of the magazine assembly. A bistable biasing member is mounted within the housing and in a first stable position, biases the magazine toward the nose and in a second stable position biases the magazine assembly away from the nose. In the second position there is defined an open area around the drive track to allow removal of jammed fasteners.

Abstract: A method of producing a copper clad steel wire, which comprises the steps of preparing a 5 to 15 mm diameter steel rod and a 21 to 66.7 mm width copper tape; continuously supplying the steel rod and the copper tape separately and cleaning the surfaces thereof; forming the copper tape in tubular form such that the copper tape can cover the steel rod while supplying the steel rod and the copper tape in parallel, and welding the edges of the copper tape in a non-oxidizing atmosphere; sinking the tubular copper tape sufficiently for the copper tape to substantially come into contact with the steel rod to form a copper clad steel rod; cold-drawing the copper clad steel rod and/or hot working the clad rod at a temperature of 400.degree. to 800.degree. C. to reduce its cross-sectional area by more than 20%; and then annealing the copper clad steel rod at a temperature of 300.degree. to 1050.degree. C.

Abstract: A cylindrical money box assembly that is received in a housing through a generally circular opening thereof and has a locking mechanism with a plate that is rotatable to position projecting portions in relation to a set of parts of the housing. In one position of the plate, corresponding to an unlocked state, the projecting portions are located to clear the set of housing parts allowing insertion of the money box assembly into the housing, and removal therefrom. In another position of the plate, corresponding to a locked state, the projecting portions engage and interfere with the set of housing parts to securely lock the money box assembly to the housing.

Abstract: The efficiency of an environmental control system such as a heating, ventilating and air conditioning system is enhanced and energy is conserved by starting and stopping the heating or air conditioning modes of operation at variable times at the beginning and end of an occupancy period, which times are a function of an environmental condition, such as outside temperature in the case of heating and inside temperature in the case of air conditioning. To this end a control system is provided which generates an output for initiating and terminating the operation of the conditioner. Separate intervals during which the generation of the variable output for initiating the operation of the conditioner and for terminating the operation thereof are established as by means of an arrangement of cams driven by a timer motor which runs during these intervals.

Abstract: A method and a device for swivelling a spray nozzle, especially for spraying concrete, over a sector between two turning positions. The speed of the swivelling movement is kept constant, regardless of the nozzle attitude. By overriding an automatic swivel control unit, the turning positions can be replaced, and once the override ceases, automatic swivelling resumes between the new turning positions.

Abstract: Improved apparatus for flushing particulate matter from the pipeline of a center pivot irrigation system. The improved apparatus provides a length of downwardly extending pipe interposed in the pipeline in the immediate vicinity of or contiguous to the outermost mobile tower assembly of a plurality of such assemblies transporting the pipeline, permitting an operator standing on the ground to open the pipe during flushing. The downwardly extending pipe includes a restrictive opening for limiting the rate at which water is released from the pipeline during flushing.

Abstract: Foam is produced when a reservoir is deformed by squeezing. When pressure is applied to the reservoir, a vent passage is sealed by a flexible washer, while liquid is forced up a tube and through a passage in a cylindrical member to a region at the top of that member. Air is forced through another passage and swirls into the same region to mix with the liquid. As the pressure of the mixture increases, a ball valve located above the region, is caused to open which allows discharge of the mixture. When the pressure is released, the valve is sealed and suction pulls the washer away from the vent to allow air back into the reservoir.

Abstract: A fuel injection nozzle unit includes a plate in which is formed an orifice through which fuel can flow to be mixed with air flowing to the engine. The plate defines a surface for engagement by a disc-like valve member formed from magnetizable material and which is urged into contact with the surface by fuel under pressure which may be assisted by a spring. A core member has a face presented to the aforesaid disc and in which is formed a plurality of grooves extending about the aforesaid outlet. The grooves accommodate electrical windings which are connected in such a manner that the current flow in the windings in adjacent grooves, so that the face of the core presented to the disc forms a series of pole pieces of opposite magnetic polarity. The magnetic field moves the disc away from the aforesaid surface to permit flow of fuel through the outlet.

Abstract: Apparatus for removing samples from a stream of materials and for producing analytical samples therefrom comprising conveying a stream of granular material on a conveyor and discharging the material from the end of the conveyor through a hopper located in the path of the stream. The hopper occupies only a small portion of the width of the stream and the hopper is fixed to a plate which undergoes horizontal reciprocating motion transversely across the stream to vary the location at which the material enters the hopper. The height of the inlet of the hopper is at least as great as the thickness of the stream. The material separated by the hopper is conveyed through a chute to a crushing stage wherefrom an analytical sample of the desired size is obtained.

Abstract: There is disclosed herein a mobile material shearing apparatus for receiving solid waste material and reducing said material to a comparatively small size. The apparatus includes an elongated movable truck bed on which is mounted a rotary shear into which the solid waste material is fed for size reduction. The smaller solid waste material exits the rotary shear and is received on a conveyor which delivers the material either to a predetermined location for disposal without further processing or to a rotary classificaton mechanism for further processing. The classifier receives the sheared solid waste material and separates particles which are above and below a predetermined size. A discharge is provided for receiving the smaller particles (fines) and means are provided for returning the larger particles (overs) to the shear for further size reduction.

Abstract: A spooler arranged for leading wire to a rotating spool through a wire tension controller and winding it onto the spool while distributing it in alternating directions along the spool between flanges thereof has means for varying the length of the distribution in either direction, arranged to be so controlled by means responsive to changes in the length of the wire in the wire tension controller in a period adjacent the moment of change to the other distribution direction as at least to reduce wound wire profile deficits or excesses adjacent the spool flanges.

Abstract: The disclosure relates to an improvement in closed face type spinning reels, in particular the design and construction of such reels to provide for a high degree of miniaturization and lightness in weight, without sacrifice of operational features. A reel is disclosed which includes a generally cylindrical reel housing containing the working mechanism. A central frame, of generally cylindrical form, mounts substantially all of the working parts, and cylindrically shaped front and back reel casings are removably mounted on the central frame to completely enclose the mechanism. The rear casing mounts a thumb lever for actuating the reel mechanism during casting. An offset, hypoid type gearing arrangement is provided for the winding handle, enabling the main drive gear to be offset within the reel housing, in order to accommodate the presence, in a convenient position, of an adjustable drag control element of conventional but advantageous form.

Abstract: A cartridge with an interior chamber to house a spool, the cartridge comprising a first part and a second part, each part including a panel of resilient material so as to be flexible along one panel edge, alignment means to align the first and second parts and align coupling means to releasably couple the first and second parts together, said coupling means comprising engageable complementarily toothed lug and surface means respectively on the cartridge parts and rigid legs on the panel having said lug means with shoulder means on each of said legs to engage the edges of apertures in tongues on the other cartridge part when said flexible panel edges are flexed to take up convex and concave configurations to make the legs convergent in a direction extending away from the panel having the legs and the tongues divergent in a direction extending away from the panel having the tongues, and an opening in one panel to permit driving engagement of driving means with a spool when housed in said chamber.

Abstract: Equipment for use with hand-held motion picture and video cameras comprises a pair of interconnected spring loaded arms, one end of which is pivotally supported by a carrying brace worn by a cameraman and the other end of which is connected to a handle positioned to mount the camera equipment at approximately the center of the moment of inertia. The camera and its associated equipment are mounted in exploded, balanced relation about the handle. The weight of the camera equipment is substantially counterbalanced by the action of the spring loaded arms without employing counterweights. A camera viewed is provided with an extended, flexible cord to facilitate viewing from a position remote from the camera itself and not necessarily governed by the camera orientation.

Abstract: This invention is for an improved print-out reader rack for use in the computer industry or the like for supporting a binder having print-out sheets contained therein. This rack consists of a carbon steel rod framework having two parallel spaced sides inclined upwardly and terminating in vertical legs for positioning the sides at an angle to the horizontal. Cross filler members are positioned between the sides to give rigidity to the framework. The front of the rack is formed angularly upwardly to receive the back of the binder. A weighted arm is pivotally mounted to one side of the rack to hold sheets of a binder in operative position.

Abstract: The assembly releasably holds a hollow cylinder, or the like, from an overhead support in a stable condition, even during and after the hanging cylinder has expanded lengthwise. The preferred embodiment of the assembly includes: a first half-ring shaped member of sheet metal attached to the overhead support; a second half-ring shaped member of sheet metal disposed along, and in abutting contact with, the upper external surface of, the cylinder; a band clamp encircling and clamping the second half-ring member to the cylinder; and, a wire rope cable that is connected alternately, and recurringly, to the first and second half-ring members. The assembly is simple in structure, light in weight, and inexpensive to fabricate and to install.

Abstract: A wall bracket for the support of a shelf, a table or a bench is fastened to a lipped box channel that is vertically positioned with its open slit towards the shelf; it is held in the channel by friction forces only and can be readily moved up and down and held at any desired height of the channel. The bracket end which is inserted into the channel through its slit has a horizontal rectangular top portion smaller than the channel inside, but wider than the slit, and is connected to the bracket body outside the channel by a neck portion of a width narrower than the slit, while the bottom portion is in the shape of a horizontal spike passing into the channel through the said slit and pressed against the channel rear by the load acting on the bracket. The bracket is inserted into, or withdrawn from the channel by turning it until its top portion is vertical and parallel with the slit and can be pushed through it.

Abstract: A reusable mold for shaping moldable material comprising a flexible freestanding wall capable of being formed in any desired shape to form the contour of the material to be molded, and a method for assembling and using the mold. The mold may include several interconnecting sections and means to hold the mold tightly against a base section to prevent leakage of the moldable material. Preprinted designs may be provided for shaping the mold to follow a desired design outline.

Abstract: Block-forming means or shuttering apparatus for precast units of especially long dimension along one axis, a horizontal basic frame and two block-forming or shuttering walls of which are means for at least one is guided slidably being selectively adjustable along the basic frame to change the mutual distance between the two shuttering walls, piston and cylinder assemblies 16 for driving of said sliding guided means, and clamping means 19 for clamping together one of the slidable shuttering walls and the basic frame.

Abstract: An electric vacuum valve comprising a body including a chamber having a first passage adapted to be connected to a source of vacuum, a valve seat in the chamber, a bi-metallic disc associated with the valve seat and operable to close the first passage and a second passage to the exterior of said body. A PTC disc is positioned in the chamber adjacent the bi-metallic disc and includes a first terminal connected to one side thereof and extending exteriorly of the body and a second terminal connected to the other side thereof and extending externally of the body such that heat from the PTC disc functions to radiate toward the bi-metallic disc when power is applied to said terminals to cause the bi-metallic disc to seat against the valve seat and when power is terminated, the bi-metallic disc cools and moves away from the valve seat.

Abstract: A valve assembly is provided for use in controlling the maximum flow of a pressurized fluid through a hollow body. The hollow body includes a fluid inlet and a fluid outlet separated from one another by a partition having an aperture formed therein. The valve assembly includes a sleeve member which is disposed within the hollow body so that one end of the sleeve member is disposed adjacent to and in substantial alignment with the partition aperture. The sleeve member is provided with a discharge port which is spaced from the one end and is in communication with the fluid outlet. Sealingly engaging the portion of the partition defining the aperture is an adjustable seating piece. An elongated valve stem is mounted within the sleeve member for axial movement between open and closed positions.

Abstract: A channel-shaped housing has an enclosed rectilinear passageway longitudinally therethrough for guiding a roller chain therealong when the latter is moved by the rotation of a sprocket wheel positioned above the chain, the teeth of the sprocket wheel engaging from above certain rollers of the links of the chain. The rearward end of the floor of the housing is shaped to provide a rigid stationary pawl adapted to enter the interspace of an associated chain link for holding the chain against movement in one direction. Another pawl, spring biased and pivotally movable, is adapted to engage a tooth of the sprocket wheel, the pawls being so related to the chain that the stress on the chain is divided between the pawls. A simpler modified embodiment omits the pivoted pawl, utilizing only rigid stationary pawls, or alternately, the device may be used without any of the stationary pawls.

Abstract: A hoist of the type including a Weston-type load brake actuated by relative rotary movement between a pair of input drive members and having a control mechanism actuated by plunger carried within the hoist to allow or prevent axial movement of the input drive members from the position wherein their relative rotary movement actuates the load brake.