Abstract: A snare drum attachment comprising a first and a second bar about the same length as the snare head diameter of a snare drum, a pair of bridges mounted between the bars, a plurality of snares stretched across the bridges and defining a snare surface, vibration-absorbing pads positioned between the bridges and the snares to cushion the snares thereby preventing the transfer of vibrations to the bridges and maintaining the snares in fixed straight lines, and a supporting bar and end plate arrangement fastened to the snare drum hoop for rigidly suspending the two bars directly below and independent of the snare head. Also provided are two separate strainers for separately adjusting the vertical drop of each bridge thereby allowing independent control of the contact pressure between the snares and the snare head adjacent each bridge and a spring-loaded screw and guide pin arrangement for adjusting the tension on the stretched snares.

Abstract: A two-part fastener intended for securing, e.g., a panel 41 to a frame member 42 comprises a tubular shell 11 and a pin 12. The shell bore contains a tubular insert or slug 14 of resilient nylon material. The exterior of the pin is formed with annular barbs 30. When the pin is inserted into the shell, the barbs 30 engage in the resilient slug 14 to secure the pin and shell together. The pin includes a removable pintail 33 which protrudes beyond the shell and assists in the pulling of the pin into the shell by means of a suitable pulling tool.

Abstract: A safety disk assembly is used in determining when a predetermined force is exerted in tightening a nut, bolt or similar fastening member to a base structure. The safety disk assembly is positioned between a fastening part, such as a nut, and the surface of the base structure. The safety disk assembly includes a first disk and a second disk with a shear pin interconnecting them. Additional shear elements can be used in the assembly. Preferably, a thin layer of Teflon is positioned between the disks. When a torque is applied to the fastening member, the shear pin breaks when a predetermined break point is reached. The friction coefficients of the disk surfaces and the effective radii of the disks are selected to provide the predetermined break point characteristics. When the shear pin breaks one of the disks can move relative to the other. An indicator is incorporated into the safety disk assembly to show when the predetermined break point has been exceeded.

Abstract: A cartridge magazine including a spiral channel having a tangential linear xit section, a plurality of spider arms dividing the cartridges into groups of cartridges and having a plurality of indentures in their radial faces, and a drive means mounted external to the magazine for driving said arms. The spiral is a perfect Archimedian spiral and the indentures on an arm number one less than the number of cartridges in a group and are displaced radially by the diameter of a cartridge.

Abstract: A method for making electrical circuits on a non-conductive plate is disclosed. The invention provides for duplication of a circuit pattern on an insulating plate having a continuous deposit of electrically conductive material thereon by a mechanical linkage between a milling device, which removes the conductive deposit, and a scanning device, which is moved in accordance with a master pattern. In preferred embodiment the movement of both devices is confined to one of two or sometimes three co-ordinates for a particular portion of the pattern. The method is swift and efficient, and the invention is equally applicable to small or large-scale manufacture, although it is of especial value where small numbers of circuit boards are to be produced.

Abstract: A deburring device has a fixed or pivotable head on a rod or shaft which projects into the tube, pipe or other hollow to be deburred. The head has an oblique bore in which sits a tube; a cutting edge is provided along and around one end of that tube. Turning of the edge permits easy use of a new cutting edge portion. The position of the cutting tube is adjusted by a hollow nut through which runs also the removed burr. Guide rolls on the shaft position the tool, whereby rolls on the opposite side of the cutter are resiliently journalled.

Abstract: Disclosed is a deburring apparatus having a tool holder mounted on a mechanism which moves the holder along a path corresponding to the nominal contour of the edge of a cut such as a groove or slot in the work piece to be deburred. A deburring tool is mounted in the tool holder for movement toward and away from the edge to be deburred and is resiliently biased toward the edge so that it automatically follows the cut and removes the burr therefrom despite variations of the edge being deburred from its nominal location.

Abstract: An internal grooving machine having a work holder arranged for supporting a workpiece on a frame adjacent a cutter arrangement which includes a ram assembly employing a grooved ram mounted for reciprocating movement relative to the workpiece in order to form one or more helical grooves on the workpiece. When a hollow bushing is used as the workpiece, internal grooves are cut so as to form lubricant grooves within the bushing and more equally distribute lubricant to a bearing assembly in which the bushing is employed.

Abstract: This invention is directed to fluid actuated apparatus for automatically restricting the flow of fluid in conduits leading to and/or from fluid actuated cylinder means for causing pivotal movement of a member, such as the turret carrying the boom and bucket of a backhoe, so that the speed of pivotal movement of the member is rapid during one portion of its pivotal movement but is automatically reduced during a predetermined portion of its subsequent pivotal movement, thereby minimizing failures of the components of the member and the fluid system and improving the braking action for reducing the speed of pivotal movement of the member. In one embodiment, both the flow of fluid to the operative fluid actuated cylinder and the flow of fluid from the inoperative fluid actuated cylinder are restricted substantially simultaneously by fluid restricting means so that the linear velocities of the rods of both cylinders are reduced substantially simultaneously by the fluid restricting means.

Abstract: A pressure responsive check valve permits fluid flow therethrough in a first direction and blocks fluid flow therethrough in the reverse direction until the fluid pressure at the blocked side exceeds a preselected pressure level at which time the check valve is controllably opened for reverse flow therethrough.

Abstract: A piston and cylinder machine of the kind in which there is a wobble mechanism for reciprocating the piston in the cylinder or an arrangement in which a piston assembly and a cylinder assembly rotate about respective inclined axes so that such rotation is accompanied by relative reciprocation of the piston and cylinder, is provided with a piston having a part which has a surface exposed inside the cylinder to define at least a part of one end of a chamber therein and which, to provide sealing of the chamber, has a peripheral surface forming a sphere. Improved torque transmitting or reacting means for maintaining the correct relative orientation of the piston and cylinder are provided.

Abstract: A hydraulic pump is provided which includes a plurality of housings, each of which has an upright cylindrical cavity formed therein, and a plurality of plungers, one for each cavity. The housings are removably mounted on a common support and the plungers are removably mounted on a common actuating member which is adapted to move in a linear path relative to the support and simultaneously move the plungers relative to the housing cavities.

Abstract: A method is provided for producing a reclosable plastic bag formed of heat sealable material. A web of the material is fed to a main folding station. A continuous length of a closure strip, capable of being bent manually and retaining its bent shape, is provided. The closure strip overlies the web adjacent one longitudinal side thereof but inwardly a sufficient distance to permit a portion of the web to be folded over the closure strip. The overfolded web portion is heat sealed to the web to form a pocket receiving the closure strip. Thereafter, the web is folded longitudinally at the folding station and the folded product is conveyed to a heat sealing and cutting station.The resulting product comprises a reclosable plastic bag having a front wall, a back wall, a closed bottom and heat sealed side edges. The closure strip extends transverse the width of the bag substantially from one side of the bag to the other side.

Abstract: A transfer cylinder is rotatably mounted in a machine frame and is positioned in spaced parallel relation with a rotatable delivery cylinder. A side fold cylinder is positioned intermediate the transfer and delivery cylinders. The transfer cylinder conveys the envelope blank onto the periphery of the side fold cylinder. Rotation of the side fold cylinder with the envelope blank retained thereon folds the side flap and advances the folded envelope into engagement with the delivery cylinder. A gumming cylinder having an adhesive applicator portion is positioned adjacent the delivery cylinder and is operable to apply a strip of adhesive to the exposed bottom flap of the envelope blank as the blank is transferred from the delivery cylinder to the gumming cylinder. A selected amount of the adhesive is transferred from a reservoir by a roller to the surface of the adhesive applicator. The gumming cylinder rotates in timed relation to the delivery cylinder and in an opposite direction.

Abstract: An assembly is provided of a known high speed envelope blank cutting unit with a known envelope folding unit and an envelope conveyor to transport a continuous stream of envelope blanks from the blank cutting unit to the folding unit in a predetermined timed sequence and in position for proper entry into the folding unit. The conveyor includes predetermined transport segments positioned, relative to one another, to accommodate necessary path direction changes, and a stacking or shingler segment. Opposed belt systems in each transport segment maintain the blanks in a desired relative relation. The belts are driven from the blank cutting unit, with each transport segment driven by or driving adjacent segments. The timing between the blank cutting unit, the folding unit, and the envelope conveyor is selected and adjusted through an adjustable drive shaft arrangement interconnecting the two units.

Abstract: A ventilator for use with sheet metal roofing.The sheet metal panels covering the roof are lap-joined at the ridge of the roof and a ventilator opening is cut in the overlapped end portions of the sheet metal panels and in the underlying roof structure on either side of the ridge of the roof. The ventilator consists of a base member which is secured to the roof and a cover member which fits over the base member, both members being formed from sheet metal panels. The sheet metal panel from which the base member is formed has a centrally located cut-out conforming to the size of the opening in the roof structure and has its side edge portions folded upwards and inwards upon themselves to form flanges, and are further folded upwards at right angles to the flanges to form upstanding side walls.

Abstract: An automatic drip coffeemaker includes a removable, top mounted reservoir which delivers water in accurately controlled quantities to a small water tank. From the tank, the water flows through a tube to a heater well in which it is heated to boiling, thereby causing it to overflow the well. The hot water then flows a short distance to a spout located above a basket and spreader assembly through which it passes prior to entering a carafe which is heated by a warming plate. A control circuit serves to control the brewing and heating cycle. The water heating system also finds application for other purposes such as heating liquids for tea or soup.

Abstract: A corn popper for popping of popcorn by the wet or cooking oil process having a cooking pot with a heating element and stirring means therein with a floating lid structure for the pot to permit buildup of popped corn prior to discharge thereof from the pot and a surrounding bin for collection of the popped corn and a sifter-server unit. The pot and bin are separable for access to the popped corn and with the pot being detachably mounted on a base having drive means for the stirring means in the pot and electrical connections for the heating element.

Abstract: A method of forming a soft plate-like baked piece into a three-dimensional cracker and an apparatus therefor. A plate-like cracker is placed immediately after baking onto two spaced, substantially parallel to each other plates and formed into a three-dimensional shape by two claws movable along a specified path.

Abstract: A vegetable steamer has a perforated base plate to which a plurality of overlapping hingedly movable leaves are attached. Base legs are self-riveted to the base plate. A pair of parallel straps are provided slightly above the base plate, and having ends integral therewith. A detachable resilient handle has an upper circular portion, a pair of depending handle legs extending from the arcuate portion, and a lifting tab extending outwardly from the lower end of each handle leg and passing through a strap.

Abstract: Several pairs of slender rolls having metal core shafts and resiliently soft outer coverings are disposed parallelly to each other and with an inclination in their longitudinal direction relative to the horizontal direction and submerged in water in a tank, into which berries with adhering calyxes are fed, guided toward the tank bottom, and released to float upward and along the lower surfaces of the rolls, each pair of which is pressed against each other and driven to rotate in opposite directions such that their surfaces in contact move upward. The calyxes of the berries, which are easily dispersed and rotated in the water, are caught between the pairs of rolls and are completely clamped thereby and finally plucked off from the pericarps of their berries.

Abstract: The continuous can printer and transfer apparatus is provided with infeed means devoid of moving parts, whereby cans move in a guided path by gravity through an inclined chute to stationary pockets on a rotatable pocket mandrel wheel where they are drawn from the pockets and seated by vacuum on mandrels which carry the cans to a printing blanket cylinder. Before contacting the rotating printing blanket, the surface speeds of the mandrel and printing cylinder are precisely matched by a pre-spin belt on the printing cylinder and rollers. Decorated cans are transferred to suction cups on a transfer wheel and discharged to a pin chain conveyor by a transfer assembly wherein all motions of the transfer cups are controlled in a radial and axial direction by a single cam motion.

Abstract: The present device is a means for printing multi-lines of characters simultaneously on a continuously moving print receiving medium or form and in a manner eliminating the need for indexing the form line by line and column by column. Multiple type fonts are arranged in helical paths around a continuously rotating drum, the axis of which is positioned at an angle to the path of movement of the form whereby each font is effective to print an individual line of character on the form as it progresses along its path of movement.

Abstract: A screen printing machine wherein a hollow cylindrical stencil rotates about a stationary but adjustable horizontal header which supplies a liquid and is welded to a carrier for a reciprocable or pivotable holder supporting a blade-like or rod-like squeegee. The latter is biased against the internal surface of the stencil by a deformable tubular cushion which is received in a U-shaped portion of the carrier and is deformed by an elongated extension of the holder which imparts to the cushion a kidney-shaped cross-sectional outline. The cushion can be bonded to the carrier and comprises an elastic hose which is reinforced by one or more textile or metallic layers or a non-elastic hose which is reinforced by one or more layers of elastomeric material.

Abstract: A printing press for use in printing a continuous paper web having a fountain section and a plate section each pivotally mounted to a main frame. The fountain section includes a removable ink fountain and rotatably mounted fountain and transfer rolls, and the plate section includes a rotatably mounted plate cylinder. An impression cylinder is rotatably mounted in the main frame. The fountain section is pivotal for selective engagement and separation of the transfer roll with the plate cylinder, and the plate section is pivotal for selective engagement and separation of the plate cylinder with the transfer roll and the web supporting impression cylinder. The pivotal sections are actuated by hydro-pneumatic cylinders and are adjusted against mechanical stops which maintain the adjustment of the contacts between the respective cylinders and rolls. The fountain section also has adjustment and mechanical stop devices for selectively engaging and separating the fountain roll with the transfer roll.

Abstract: A method for printing and embossing thermoplastic man-made fabrics, non-wovens and other deformable materials wherein in a heat transfer printing process embossing and/or surface texturing means are introduced simultaneously with the printing means and material to be printed.

Abstract: An ignition or firing voltage generator adapted to be actuated only proximate the peak of an inertial force and, in its equilibrium position will not emit a voltage even when subjected to hard shocks. A piezoceramic cell, as well as a solid body which is arranged axially adjacent thereto, are located within a preferably cylindrical support member which is axially displaceably guided within a tubularly-shaped component of an igniter housing, but in the initial position thereof is so restrained through the utilization of a securing element in the configuration of a shear element, spring fastener or the like, that its base is located at a defined spacing opposite a base plate of the igniter or detonator housing. A securing element of that type, without difficulty, may be so dimensioned that it will only first release the support member, when it is influenced by approximately the maximum inertial force.

Abstract: Sound/noise barriers are shown that are useful along a noise source such as a rail or other right of way or next to a utility substation. The barriers have a profile characterized generally by an upwardly extending noise barrier wall and an upper, sideways projecting element. The wall reflects the noise to an advantageous point for absorption while the sideways projecting element performs a number of simultaneous functions. In various embodiments it serves as a barrier for upwardly reflected noise; as a protector, against the weather for sound absorptive devices, in particular sound absorptive materials that lie below it; as an emergency or safety walkway; as a beam strength structural element; as a support for another barrier placed above it; as a base in cases where the barrier is reversed for operation in a different mode; and as a cooperative element with noise baffles such as may be attached to rail cars and other noise sources.

Abstract: A side dump railway hopper car with outwardly movable discharge doors includes a door operating mechanism including pivoted keeper engaging members adapted to be rotated between lock an open positions. The pivoted keeper engaging members are actuated by linkage mechanism transversely movable by a longitudinally extending movable cam adapted to be supported on the underframe of the hopper car.

Abstract: A sleeping berth movable between stored and use positions includes an elongated pan having a central substantially deep portion and at opposite ends substantially narrower portions which contain a suitably shaped mattress. The shallow portions in the use position of the bed increase the head room for passengers seated on the compartment seats. The pan or shell of the berth also includes at one side thereof a tubular beam construction which houses a linkage mechanism for releasably locking the berth in use and non-use positions.

Abstract: Load binder chain attachment points are provided by anchor point assemblies carried on the stepped side sill of a flat bed vehicle. The anchor point assemblies are selectably positionable along the length of the vehicle. The stepped side sill allows the use of conventional removable side panels without interference with the anchor points or binder chains.

Abstract: An open-ended tubular pedestal member has front and rear walls joined by opposite side walls. The front and rear walls have an inward recessed configuration to provide reinforcement as well as to form foot spaces. Such walls in one embodiment are held in recessed configuration by a connector strip removably attached between the front and rear walls. A top wall has depending side tabs which project into the tubular pedestal member adjacent respective side walls or if desired the top can be secured at one side to the pedestal and at the other side have the depending tab. The recessed configuration of the front and rear walls extends fully to the side walls to form acute angular portions at the juncture therebetween and the depending tab or tabs on the top wall have a fitted engagement in such acute angular portions. The pedestal member and the top wall have bend lines so as to be foldable into a compact, flat package for shipment and storage.

Abstract: In a collapsible tea table combination wherein a foldable X-legged stand provides level and lengthwise parallel crossbars, and supports the improved tray system, maximum usable planar spread of crossbars can be selectively spanned and detained by rails rigidly attached along two parallel sides of the tray-bed to provide a minimum usable tray elevation. Minimum usable planar spread of crossbars can be selectively spanned and detained by means of deformable hangbuttons inserted into apertures formed in the tray-bed near the rails to provide a maximum usable tray elevation. The tray can be rendered invertible by using reversible tray-bed material, by using rails which juts both above and below the tray-bed, and by using hangbuttons which are symmetrically contoured for vertical displacement and rotation. Inasmuch as hangbuttons rotate within their apertures, they serve as rotary locks for stabilizing a table erected from any one of the choice of practical tray settings.

Abstract: A shelving assembly with rectangular, formed sheet metal shelves horizontally supported by tubular corner posts has molded snythetic plastic corner block members operative to releasably grip any one of a plurality of peripheral zones spaced along the support posts for selective shelf height adjustment. Each sheet metal shelf is formed with a peripheral skirt terminating in a horizontally inwardly-extending flange portion and vertical corner cut-out portions defining together recesses for receiving the individual corner blocks in close-fitting embracing, relation, the corner blocks also being formed, at outside corners thereof, with vertically-extending, rounded projections receivable in the said skirt cut-out portions to define with said peripheral skirt, flush, rounded corner surfaces.

Abstract: A device for simultaneously hemming one edge of a curtain or drapery panel, while sewing a strip of buckram or other stiffening material along an oppositely disposed edge. The device includes a pair of parallel elongated panel supporting and transporting units, each having moving belts which engage an edge of the panel therebetween, and transport the panel to a sewing station. The belts are synchronized with respect to linear speed, so that opposed edges of the panel are maintained in the same relative position. One sewing station includes edge-folding means located ahead of a sewing needle. The other sewing station includes means for positioning a strip of buckram against the area of the panel adjacent an edge thereof. Photosensitive means controls thread and buckram strip severing operations at the completion of each finished panel.

Abstract: An electronic sewing machine with pattern selecting means is provided with control circuitry operable to increase stitch lengths in the work feeding direction by a predetermined integral multiple in a selected pattern by providing for pattern data retention and the discontinuance of endwise needle reciprocation during work feed operations corresponding in number to the said predetermined integral multiple.

Abstract: A tufting machine needle module having a body member attachable to the needle bar of the tufting machine. The module has a plurality of longitudinally spaced needles formed integrally with the body member and depending therefrom in parallel relationship. The body member includes co-operable male and female formations on respective front and rear faces thereof spaced at equal distances longitudinally on the respective face with those of one face offset longitudinally relative to those of the other face by a distance equal to an odd number multiple of one-half the pitch of the needles carried by the body member. The modules are arranged in two rows one behind the other with the male and female formations of modules in respective rows cooperating with those of the other row so that the modules in a row are offset from the modules in the other row by one-half the pitch of the needles on each module.

Abstract: A cutter for severing work pieces chained together and for removing thread in close proximity to the work piece, such as on leading and trailing edges. The cutter of the invention permits close proximity of adjacent work pieces during the process of sewing but is still able to cut and remove free thread without necessitating undue slack as normally required with a shear type cutter (unlike a guillotine type cutter), or similarly can remove trailing thread between the work piece and the sewing machine.

Abstract: A driving mechanism for actuating an underbed thread trimmer in a post-type sewing machine. The unit is selectively controlled by a solenoid and actuated by two cams located on the hook shaft of the feeding post. Rotary motion of the shaft and cams is converted into translational motion for the trimmer by a pivoting swivel lever and cam follower combination.

Abstract: Apparatus for making a container for example a frusto-conical container from a blank having an end panel and side panels, the apparatus having a cavity tool and a core between the blank can be clamped in the form which it takes in the finished article, and a blank positioning member movable relative to the tools which, as the tools move toward a closed condition to clamp the blank will engage a free edge of the blank already in its final axial position in the cavity tool to correctly position that edge before the tools reach the closed condition.

Abstract: A sailboat of the positive displacement type having a novel construction including transverse and longitudinal interior tubular structural frames for absorbing the loads from the mast including the rigging system and the fore and aft stays as well as the loads from the keel. The structural support frames may be prefabricated and are inserted in and attach to, a hull shell which because of the strength and load-absorbing capacity of the frames, may be made from a thin lightweight construction, for example, a balsa core sandwiched by Fiberglas skins. The hull shell is formed separately from the frames and its strength need only be sufficient for absorbing the forces of the sea since the stresses and strains from the aforementioned loads are absorbed substantially entirely by the internal support frames. The transverse support frame supports the mast with the shrouds being fastened through chain plates to opposite sides of this frame. In addition, the keel is fixed to the transverse frame.

Abstract: A vessel for carrying steel slabs or like cargoes, comprising a hull having a stern and a bow, an upper weather deck at least one cargo hold, an opening predominantly through the weather deck and communicating with the interior of the hull of the vessel, loading apparatus to transfer slabs to, and from, a wharf through the opening, at least one conveyor extending longitudinally of the vessel and past the cargo hold, the loading apparatus being adapted to deliver slabs to, and from, the conveyor, and a load transport crane within the vessel for transferring the slabs between the conveyor and the cargo hold. In a variation the weather deck has openings which are aligned with the openings to the cargo holds to allow a bulk commodity to be carried by the vessel.

Abstract: A device for controlling the swinging of the boom of a sailboat, comprises a line fixed at its opposite ends to opposite gunwales of the boat and passing intermediate its ends about a sheave carried by the boom. The sheave can be non-rotatable, in which case braking effect is achieved by providing at least one dead turn of the line about the sheave. In this case, guides carried by the sheave are preferably provided for preventing overlapping of the turns of the line. Alternatively, the sheave can be rotatable, in which case braking can be provided by brake shoes progressively applicable upon rising movement of the boom, which is the condition characteristic of greater wind pressure against the sail and hence greater tendency for the boom to swing quickly.

Abstract: A boat includes a longitudinal water channel along the bottom thereof. A motor driven propeller in the channel circulates water from a forward inlet end thereof to a rear outlet end thereof to advance the boat through the water. Passages are provided which communicate with the channel and which are adapted to discharge water through front and rear openings on the port and starboard sides. Gates are provided for opening these passages. A gate actuating mechanism is provided for opening the front port and rear starboard passages to rotate the boat in one direction about its own vertical axis. Another gate actuating mechanism is provided for opening the front starboard and rear port passages to rotate the boat in the opposite direction about its own vertical axis. Upon being opened, each set of gates serves to block travel of water to the outlet of the channel, and thereby divert all water through the passages.

Abstract: An automobile service and inspection time indicating device wherein the members for performing the resetting operation are recessed from the surface of the outer plate of the meter case to avoid inadvertent operation of the resetting mechanism. The indicating elements can be positively seen during the daytime or at night.

Abstract: Apparatus for delivering metered amounts of varnish to the surface of a metal can, or the like. Varnish is delivered to a metering roll having recesses in its surface and a doctor blade to scrape off excessage. The varnish in the recesses of the metering roll is delivered to a varnishing roll in continuously metered amounts, and it is delivered by the varnishing roll to the surface of a can, or the like. Remaining varnish is removed from the varnishing roll by a second doctor blade so that substantially no varnish is present on the varnishing roll at the points of delivery of metered varnish to such varnishing roll.

Abstract: This installation comprises at least one follower means moved and guided to follow the path of the racetrack at a variable speed which can correspond to a selected gait, such as the trot. Each follower means bears a directing device connected by a harness to one of the horses to be trained, so that the training of each horse, at the chosen gait, is done without the help of any rider. A drive means moves the follower means or the group of follower means. Each follower means may be a carriage traversing a guide. The guide means may be a fork whose branches are connected by a tie to the harness of the horse.

Abstract: A water supply and control device for animals in which a predetermined amount of water in a water reservoir must be removed before the reservoir is refilled.The device consists of a water reservoir having a water supply pipe extending into the reservoir with a valve positioned within the pipe and controlling the flow of water through the supply pipe. An upper float assembly has a movable float within the reservoir and is mechanically linked to the valve to open and close it. A lower float assembly has a lower float connected to an arm which is pivotally connected to a fixed location in the reservoir. There is a brace member having one end connected to the arm and the opposite end engaging in restraining relationship the upper float assembly. The brace remains in the restraining relationship with the upper float assembly until the water within the reservoir falls to a predetermined level, with the lower float following the lowering water level until the predetermined level is reached.

Abstract: An automatic sorting device for livestock comprises a chute through which animals are urged, and includes a first, open end, and a second end with two passageways therein. Each of the passageways leads to a separate livestock pen area. A pair of gates are operably connected with the device, and each selectively closes and opens one of the passageways. A weight sensitive mechanism is operably connected with the chute, whereby one of the gates is opened in response to an underweight animal walking through the chute, and the other gate is opened in response to a marketweight animal walking through the chute, thereby automatically inducing sorting the livestock by weight into the separate pens.

Abstract: A heat exchanger with a housing defining a main fluid flow passage therethrough and a tube bundle access opening to the fluid flow passage, a tube bundle unit removably positioned in the housing in the fluid flow passage through the access opening, and a cover for removably closing the access opening so that heat exchange fluid flowing through the tube bundle unit is in a heat exchange relation with the fluid flowing through the housing main fluid flow passage around the tube bundle unit. Also shown is an economizer for a stream boiler incorporating a heat exchanger.