Abstract: An improved body implantable electrical stimulator assembly of the type having interconnected electrical components housed within a preformed enclosure. A cup is provided in which the components are finally assembled, the cup being configured to fit within the enclosure. Preferably, the enclosure is formed of a plurality of members at least one of which has a main wall and a side wall joined at a radius. The cup is similarly formed of a main wall and a side wall, the main wall being generally coextensive with at least a major portion of the enclosure member main wall. The cup engages the enclosure in a manner such that its movement within the enclosure is limited. Movement of the components within the cup is restrained.

Abstract: An apparatus for electrical stimulation of the mammae comprises a serial arrangement of a master oscillator, a stimulating pulse generator, an amplitude modulator, a stimulating pulse polarity changing unit, an output unit, and a distributing line with leads for respective points subject to electrical stimulation. In addition, the apparatus comprises modulating signal generator and a unit to form excitation and space periods, which connect each other and the frequency and amplitude modulators as well, and also comprises an automatic stimulating pulse polarity control unit coupled to the stimulating pulse generator, to the modulating signal generator, and to the stimulating pulse polarity changing unit. There is a stimulating pulse amplitude adjustment circuit for each of the points subject to electrical stimulation, coupled to a matching unit which connects surface-type electrodes.

Abstract: In signal measurement circuits which are referred to a floating ground and which derive their input signals from electrodes attached to a patient's body, the effects of common mode potentials on the patient's body are minimized without requiring any patient electrodes other than those acting as signal sources, by using a unity gain amplifier to drive the floating ground toward the common mode potential on the patient's body.This process is accomplished without significantly degrading the isolation impedance between the measurement circuits and true ground.The patient is protected from hazardous electrical shock by incorporating current limiting devices in the unity gain amplifier.

Abstract: In an exemplary embodiment, the interference signals can occur as a mixture consisting of narrow interference pulse peaks of high amplitude and interference hum. It is desirable that such interference peaks and interference hum in a useful signal be suppressed without mutual influencing. To this end, an occurring useful signal having possibly superimposed interference signals is supplied to an interference hum filter. The filtered-out interference hum component is opposingly superimposed on the original signal for the purpose of compensation of the interference hum. This applies only for such a length of time as there are no interference pulse peaks recognized by a recognition installation. If such an interference pulse peak is recognized, the filter is disconnected from the input signal and switched over to self-oscillation operation.

Abstract: An auxiliary rotary selector switch is provided, preferably conveniently near a standard single-channel ECG instrument. The V lead of the instrument is connected to one end of the center conductor of a coaxial cable, the opposite end of which is connected to the center contact of the auxiliary switch. Each of several stationary switch contacts is connected to a conductor of an auxiliary patient cable, the opposite ends of the conductor being attached to a corresponding number of V electrodes spaced across the chest of the patient. By oscillating the center contact, separate V readings, one for each of the chest electrodes may be recorded. The extender is actually connected to the ECG instrument when the selector switch of that instrument is turned to the V lead position, and the signals from the plural V electrodes are recorded serially on the chart as the auxiliary selector switch is turned.

Abstract: In combination with an instrument for taking tissue specimens which comprises a pair of movable jaws. One jaw is capable of being located within a cavity of the other jaw. The tissue specimen is to be located within the cavity. Also located within the cavity is a biasing means in the form of a leaf spring which is to exert a continuous bias upon the tissue specimen and, upon opening of the jaws, the tissue specimen is automatically moved to the upper end of the cavity to facilitate its removal therefrom.

Abstract: A biopsy device for obtaining tissue specimens, particularly from endocervical canal. A cutting anvil, typically of a non-metallic material such as plastic, is carried at one end of an elongated shaft. An annular cutting blade, typically of a metallic material, on the end of a hollow shaft is telescoped on the shaft carrying the cutting anvil. The device includes a locking arrangement to lock the cutting edge of the device in engagement with the anvil during insertion of the device to the selected site and during removal of same from the body so that during insertion there is no inadvertent damage to tissue and, most importantly, no inadvertent loss and spreading of possibly diseased tissue and cells during removal. Further, the device includes an adjustment means whereby the size of the specimen may be selected prior to insertion in the patient.

Abstract: A method of obtaining actual tumor cells from remote, previously inaccessible anatomical locations and apparatus for carrying out said method, which includes a miniature cell-scraping rasp of an extremely small size which was previously unavailable and which is particularly adapted to be passed into the far reaches of inaccessible anatomic organs. The method and the rasp are particularly adaptable to abrade the epithelium of ductal areas and produce exfoliation of cells and facilitate collections of the cells for cytologic diagnosis.

Abstract: An apparatus and related method for implanting pacemaker electrodes and similar devices within a patient include an introducer with a tapered end adapted to extend into the patient's body, and a hollow, tubular sleeve having a first portion with an inner dimension greater than the outer dimension of the introducer and a second portion at one end of the sleeve which extends parallel with the introducer and in close engagement therewith, with a gradual taper along the sleeve between the first and second portions. The sleeve has a longitudinal slit along the first portion and through the taper, but short of the forward extremity, to permit the sleeve to be peeled away from the pacemaker electrode after introduction. The introducer and sleeve include corresponding hub and flange arrangements which provide a means for locking the two elements together to prevent inadvertent motion of the sleeve with respect to the introducer as the two elements are being inserted into the patient.

Abstract: A disposable electrode includes a fabric backing and a conductive mesh layer laminated thereto. A conductive polymer adhesive interfaces the conductive mesh with the skin of the patient. In order to promote uniform current density, connection to external apparatus occurs by means of a stranded wire which meets the mesh at a point and extends laterally therefrom along the electrode, intermediate the mesh and the adhesive.

Abstract: A disposable electrode includes a fabric backing and a conductive mesh layer laminated thereto. A conductive polymer adhesive interfaces the conductive mesh with the skin of the patient. In order to promote uniform current density, connection to external apparatus occurs by means of a stranded wire which penetrates the mesh from the top and extends laterally in opposite directions along the electrode, intermediate the mesh and the adhesive.

Abstract: A filter cigar is provided having outer layers of cigar wrapper and binder material each spirally wrapped about a preformed cigar filter and tobacco filler charge. A reinforcement strip including layers of high wet strength reinforcing tape and bonded to the binder is circumferentially wrapped over the interface between the filter and the filler charge.

Abstract: A continuous stream of tobacco leaves is equalized on the endless belt of a weighing device which receives an unequalized stream from a carded conveyor forming part of a tobacco feeding device. The belt is pivotable with an arm of the weighing device in response to changes in the weight of successive increments of tobacco thereon. Such changes in weight are ascertained by a potentiometer and signals denoting the weight are transmitted to a function generator by way of an adding circuit as well as to a multiplying circuit which further receives signals denoting the speed of successive increments on the belt. Signals which are transmitted by the multiplying circuit are used to regulate the speed of the belt so that the product of signals denoting the weight and of corresponding signals denoting the speed of successive increments of tobacco on the belt remains constant.

Abstract: A method for mechanically wrapping closed tip cigars of the type in which the bunches are wound in the normal direction of the machine used when wrappers are to be employed which are cut out from a half-leaf corresponding to the "type" of the machine, i.e. "right-hand" or "left-hand", and said bunches are wound in the direction opposite said normal direction when wrappers are to be employed which are cut out from a half-leaf not corresponding to the type of the machine, wherein, in this latter case, a shaper is used for covering the tip of said bunches, which shaper has the characteristics of a shaper belonging to a machine of a type contrary to that of the machine used.

Abstract: A method for uniformly impregnating tobacco with additives, particularly flavoring agents, is disclosed. The method comprises contacting tobacco with liquid carbon dioxide having dispersed therein a flavoring agent or other additive; exposing the liquid carbon dioxide absorbed by the tobacco to conditions whereby it is converted to solid carbon dioxide; and thereafter allowing the solid carbon dioxide to evaporate. When the solid carbon dioxide is caused to vaporize rapidly, for example, by means of heat, the disclosed method will simultaneously impregnate tobacco with an additive and expand tobacco.

Abstract: A process for spreading out tobacco leaves for use in particular as cigar wrappers, comprising the steps of putting the leaves in contact with a liquid, preferably water, and bringing about a relative movement of the leaves and the liquid in contact with said leaves, said movement affecting the spreading out of the leaf.

Abstract: Jewelry smoking devices are described which are in the form of ornamental pipe members suitable for being worn as items of jewelry. Each smoking device has a tobacco receiving portion for receiving smoking tobacco for the purpose of burning the same, and conduit means for carrying smoke from the tobacco receiving portion to a mouthpiece. The devices are in the general forms of pipe rings, pipe bracelets, and the like, and are decorative as well as being functional pipes which can be smoked as normal pipes are or while worn as items of jewelry.

Abstract: In order to determine the homogeneity of a magnetic dispersion, part of the dispersion is conducted through a measuring cell prior to its application to a base, the size, number and type of those regions of the magnetic dispersion which interfere with the homogeneity being determined with the aid of magnetic measurements. The measuring cell contains a magnetic head, a magnetic dispersion is made to flow in a stream of constant cross section past the air gap of the magnetic head, and a magnetic field at least partially penetrating the magnetic dispersion is produced. From the characteristics of the amplified output voltage of the magnetic head the various parameters of the inhomogeneities in the magnetic dispersion can then be ascertained.

Abstract: A fluid control valve is provided for use in conjunction with a fluid device and a source of fluid pressure wherein the fluid device includes an expansible fluid chamber which, upon connection to the fluid pressure source, actuates the fluid device while exhaustion of the fluid pressure from the expansible chamber deactuates the fluid device. The fluid control valve, according to the present invention, comprises a valve member and a housing axially slidably disposed over the valve member. The housing further includes a first fluid port adapted for connection with the fluid pressure source, a second fluid port adapted for connection with the expansible chamber of the fluid device and a third fluid port adapted for connection with a source of low fluid pressure. Resilient means are provided within the housing to retain the housing in a central or neutral position relative to the valve member.

Abstract: A hair curling and waving device is provided having a plurality of elongated waving members disposed in two groups with the groups being secured at one end to a handle and relatively rotatable as groups into and out of intermeshing engagement, with several of the members being provided with heating and/or steaming means for permanently setting hair wrapped about the members. A plurality of comb-like wave guides are also secured to the handle and extend parallel to the waving members and adjacent thereto for engaging the hair as it is wrapped around adjacent waving members. Some of the wave guides are preferably movable longitudinally so as to move portions of the hair which are engaged with the comb-like teeth of the wave guides in order to produce a further wavy appearance in the hair.

Abstract: A water or other fluid containing system is protected by a thermostatically controlled drain valve having input, output, drain and control ports. A slideable barrier within the valve selectively directs the flow within the valve between the ports. A small coupling orifice through the barrier allows equal static pressures to develop on opposite sides of the barrier, and a thermosensitive relief mechanism at the control port relieves the pressure on one side of the barrier when ambient temperature drops below a predetermined level. Unequal pressures upon the barrier shift the barrier, redirecting the flow within the valve.

Abstract: An illustrative embodiment of the invention provides a valve seat that has hot, cold and discharge water apertures. A plate, relatively rotatable with respect to the valve seat, is pressed against the valve seat surface. A cavity formed in the plate adjacent to the surface in contact has a pair of axisymmetric lobes which are asymmetric with respect to an axis that is perpendicular to the axis of symmetry. This configuration permits cold water flow first through the valve with counterclockwise motion of the plate in spite of the relative sources of hot- and cold-water through simple inversion of the plate, as appropriate. Hot- and cold-water pressure loss and surge protection, moreover, is provided through a pressure balancing valve.

Abstract: A bypass valve with a tubular housing having an inlet at one end, a main outlet at the other end and a bypass outlet between the ends. A larger-diameter valving element controls the flow of fluid from the inlet to the main outlet, and a smaller-diameter valving element which is coaxial with the larger-diameter valving element controls the flow of fluid from the interior of the housing to the bypass outlet. The valving elements are mounted on a rod which confines them to movement in and counter to the direction of fluid flow from the inlet to the main outlet. Each valving element is movable by the fluid to an infinite number of positions in each of which they permit the fluid to flow to the respective outlets at a different rate. The smaller-diameter valving element is movable against an annular seat to seal the bypass outlet from the interior of the housing.

Abstract: An apparatus for removing gas from a liquid such as sewage comprises a siphon having a rising leg 2 arranged coaxially within a falling leg 3. Depending into the siphon from a closure member 4 is a skirt 5. A gas extraction pump 6 is in communication with the siphon by means of a tube 7 which extends through closure member 4 at a location outside the skirt 5. Any foam drawn through with gas in the liquid when the pump 6 is operated will have to pass through liquid since the vacuum is drawn from the pump 6 at a location outside the skirt 5.

Abstract: A valve incorporates a float chamber containing a float, and an air chamber above the float chamber containing a valve element movable vertically between a port in the bottom of the air chamber communicating with the top of the float chamber and an air vent in the top of the air chamber the float and the valve element being connected by a push rod passing through the port. The push rod has a cross section presenting several lobes. A plain tubular guide forms at least part of a passage between the float chamber and the air chamber terminating at the top end in the port. The push rod passes through the tubular guide, the lobes being a sliding fit therein. The valve element may rest in a cup-shaped cage within the air chamber. The upper end of the push rod may be slotted to permit it to straddle the bars of the cage and enter the cage so as to engage the valve element.

Abstract: A check valve which has top and bottom flanges and a valve body thereinbetween. The flanges have aligned holes therethrough which serve as an inlet (bottom flange) and an outlet (top flange) for fluid flowing through the valve. A spherical ball is contained within the valve body and rests on a ball seat surrounding the inlet. A top plate is positioned adjacent to the top flange and has an opening therethrough which diverges concentrically toward the outlet opening, and a ring shaped ball stop which receives the ball when it is forced away from the ball seat by the fluid is positioned between the top plate and the top of the ball. Also, the inlet may have a restricted portion so that a diverging portion of the inlet opens into the valve body.

Abstract: Chimney for joining a lower main sewer line having a vertical nipple to an upper branch sewer line, the chimney consisting of a pre-cast concrete bridge assembly straddling the main line and having a bore through which the nipple extends, the bridge being joined by intermediate sections to a Y-branch section having passages and openings for joining it to the branch line, there being a fluid-tight seal between the bore and the nipple to permit relative movement therebetween without leakage.

Abstract: A precision fluid flow regulator for liquid and gaseous applications necessitating reduction of high inlet pressures and requiring precise control of outlet flow rates and pressures. The device includes a large pressure port and a cooperating pressure port closure means having a large pressure sensing area. Embodied internally of the unit is a novel sensing means for accurately sensing outlet flow rates and pressures and for providing instantaneous response to flow rate changes.

Abstract: A back pressure valve employing a spring loaded diaphragm normally closing a discharge port or orifice combined with a push rod extending externally of the valve for coupling with a control actuator with the inner end of the push rod being operatively associated with the diaphragm for using an external control system for varying or regulating the back pressure in a fluid flow line. In one embodiment of the invention, the push rod is engaged directly with the diaphragm assembly, whereas in a second embodiment of the invention, the push rod is engaged with the spring which in turn is engaged with the diaphragm assembly. In both embodiments of the invention, a weak spring is associated with the diaphragm to bias the diaphragm to a closed position to prevent passage of air to a pump intake in the event the system is shutdown with the control actuator and push rod in a position to leave the diaphragm open or to relieve pressure on the heavier main diaphragm spring.

Abstract: A sample injection valve using a member having four ports as a fluid system inlet, a sample injection inlet, a fluid system outlet, and a vent. The valve also uses a fluid sample reservoir and includes a controller for simultaneously connecting the fluid system inlet and outlet and interposing the fluid reservoir between the sample injection inlet and the vent. A switch changes the position of the fluid reservoir to one of interposition between the fluid system inlet and the fluid system outlet.

Abstract: A valve selectively supplies air pressure to two pneumatic devices on the transmission housing of a motor vehicle. The selector valve includes a stationary base mounted on the top of the gearshift lever of the vehicle. First and second valve plates are mounted for individual movement between two positions relative to the base to selectively connect and disconnect an air pressure source with the two pneumatic devices. Cooperating engaging surfaces on the first and second valve plates insure proper sequencing of the selector valve by the operator.

Abstract: Disclosed is an improved surge stabilizer for reducing and controlling pressure surges and vibrations which cause destructive wear to pumps. The stabilizer includes a cylindrical case which is placed in pressure communication with the pump working fluid, and an internal pressurizable cylindrical cartridge having a flexible sidewall and end caps, one of which is attached to one end of the case. A control rod is slidingly fitted in bores in the caps, thereby eliminating the tendency of the cartridge to "piston" longitudinally. Further control of the compression characteristics of the cartridge is obtained by providing multiple plies of equal length in the sidewall of the cartridge, and by utilizing reinforcing cords in the plies wrapped at a selected bias or angle.

Abstract: Disclosed is a multi-layer tubular packaging material having two or more layers, comprising at least one first layer of a polymer comprising a linear polyamide and at least one second layer of a polymer comprising a linear polyamide containing from about 2 to 40 percent by weight of a hydrophilic substance compatible with the polyamide, e.g., polyvinyl alcohol.

Abstract: A composite reinforced plastic pipe and method of making the same are disclosed wherein a resin impregnated surfacing mat is formed into a tubular inner liner on a mandrel or the like, a plurality of resin impregnated continuous fiberglass strands are helically wound upon the inner liner to form an inner layer, a sand-resin composition is applied onto the inner layer to form a tubular core, and an outer layer of resin impregnated continuous fiberglass strands are helically wound upon the tubular core whereafter the composite pipe is cured to provide a pipe having high resistance to internal and external pressures.

Abstract: Drive mechanism for a rapier-type loom, including a timing belt to which the rapiers are attached and an operating means, including a dwell device, for reciprocating the belt.

Abstract: A package strapping tool of the fluid pressure operating type embodying tensioning means for tightening a loop of strapping around a package and joining means for securing together overlapped portions of the loop. The tensioning means and the joining means are operated by hydraulic or pneumatic means wherein the initiation of the joining operation is controlled through a time delay device the timing cycle of which is started by the application of fluid pressure to the tensioning means. The time delay device is preferably of a pneumatic or hydraulic type which uses for its own operation the fluid which is suppled under pressure to operate the tool. The time delay device is preferably adjustable whereby the cycle of the tool may be varied dependent upon circumstances and the timing cycle may be started by the supply of fluid pressure to the tensioning means.

Abstract: A method and an apparatus for manufacturing nuclear fuel rods by introducing elongated fuel pellets into cladding tubes. The pellets are arranged in end-to-end relationship on a support and are pushed axially from the support over a well defined break point and onto a downwardly inclined guide. The guide is disposed at a sufficient angle to cause the pellets to slide therealong under the influence of gravity. The cladding tube is disposed at the lower end of the guide in alignment therewith and in a position for receiving the sliding pellets.

Abstract: Apparatus for and method of the in situ application of a controlled or known quantity of lubricating oil to the wick lubrication system of a fractional horsepower electric motor or the like.

Abstract: A system for storing a dry powdered drug component and a liquid in separate containers and mixing them immediately prior to injection. The system has a hypodermic syringe with an axially slidable stopper, and the syringe is coupled to a rigid tubular housing with a low friction vacuum movable piston. Simple reciprocation of the syringe stopper with an attached plunger having a laterally extending thumb pad or other graspable slip resistant surface automatically reciprocates the housing's low friction piston and causes quick and complete turbulent mixing. There is no need to turn the device over and over in the operator's hands to alternately squeeze or push opposite ends of the device.

Abstract: Disclosed herein is an automatic apparatus for machining panels or similar articles and, particularly, for drilling and milling them in accordance with the "Folding" system. With this apparatus, the panel to be machined is carried by conveyor means, in a direction parallel to its longitudinal axis, towards drilling and milling devices placed one after the other, the latter being able to mill the panel transversely with respect to the direction in which it moves forward. The operation of the drilling and milling devices takes place contemporaneously in unison, controlled by a feeler device located after the milling devices, which is able to perceive the presence of milling in the panel and to consequently cause the panel to halt and to be in the exact position necessary for the aforementioned drilling and milling devices.

Abstract: A machine for cutting one or two slots in the sides of a log intended for use as a roofing rafter, the machine including a pair of dado saws, means for moving the saws up and down past the sides of a log, and supports for the saws which are adjustable to coordinate the angle of the cuts with the angle of a previously made notch.

Abstract: An attachment kit is disclosed for converting a standard radial arm saw to a horizontal drill press. The kit includes a drill holder that attaches to the arbor of the radial arm saw's motor, a drill, a work support platform for holding a workpiece at a correct height and a work holder assembly for holding the workpiece to the upper surface of the work support platform.

Abstract: Starting from a loading position, a door carriage moves a door sideways between a pair of saws to trim the ends of the door. Then the carriage remains stationary while a pair of planer heads move across the carriage to trim the side edges of the door. Finally, in a lower path of travel, the carriage returns to its loading position for unloading the door, with the door passing with clearance under the saws. During these operations the door is secured by a vacuum table on the carriage.

Abstract: This disclosure relates to a planer provided with means for reducing the noise emitted by the blade-retaining shaft. The blades have a cutting edge projecting from the rotary surface of the shaft. Ahead of each blade with respect to the shaft direction of rotation there is arranged a deflecting surface which deflects the air flow over the cutting edge and has a free edge whose distance from the axis of rotation of the blade-retaining shaft is smaller than that of the cutting edge.

Abstract: A clamp-like, slip-on nut for fitting on the edge of a support having a perforation therethrough, the nut being formed by bending a piece of sheet metal into a planar lower leg having a passageway therethrough and an upper leg having a structure forming a threaded aperture for receiving a screw inserted through the passageway, the perforation and the aperture, and a device for centering the aperture with the perforation including a substantially annular strip enclosing the passageway cut from the central portion of the lower leg, the strip being surrounded by a cutaway portion except for an integral connection between the strip and the leading edge portion of the lower leg, the strip rising slightly in its trailing edge portion toward the upper leg.

Abstract: A self-adjusting easy on tire chain for use on automotive or similar vehicle tires consists of a chain having a spacing and alignment bar with a fastener for securing the chain in the proper position on a tire.

Abstract: Means for improving the traction of wheeled equipment used in the logging industry comprising an improved skidder ring with clevises to which the connecting tag chains are fastened by a pin preferably secured in place by a spot of welding material. When a tag chain breaks and must be replaced, the pin is severed by a torch permitting the remaining two pin parts to be removed from the clevis. The end link of the replacement or repaired tag chain is secured by a new pin placed in the clevis. A spot of welding material is applied to the pin to hold it in place.

Abstract: A repair plug comprises an elongate body having a head and a tail made of rubber compositions having different moduli of extension. The head has a higher modulus of extension than the tail and is adapted for engagement by a repair tool. The head may have a hole adjacent the free end thereof in which a member of a repair tool is received to allow insertion of the plug in a puncture hole without folding back on itself.Preferably the head is tapered in the direction leading towards the free end thereof and is made of a rubber composition the hardness of which exceeds that of the tail thereby further facilitating insertion.

Abstract: A burglar proof fire safe window covering is disclosed. The device comprises: a plurality of vertical bars slidingly supported at an upper and a lower end by a pair of spaced apart tracks; a plurality of pin engaging apertures at the upper and lower ends of the bars; an upper and lower plurality of vertically movable pins releasably biased into engagement with the apertures; and means for releasably engaging the pins in the apertures. A device is provided for aligning the apertures with the pins when the bars are deployed in an extended position. The window is designed so that it can be quickly and easily opened from the inside for escape of the buildings occupants in the event of a fire.

Abstract: A structure for mounting and apparatus for opening, closing, and locking a large, overhead door is adapted for buildings constructed on terrain which is not level and having floor and overhead structures that conform to the terrain. A sloping overhead truss spans a door opening and includes a widened faceplate along the length of its span to accomodate mounting a large overhead opening door along a horizontal line between vertical columns. A combination manual and automatic electrically powered door opening apparatus includes a counterweight, a coil chain and sheave for manual operation which is interchangeable with an electrically powered motor for automatic operation, all connected to a common lift cable which applies substantially vertical lifting force to the lower edge of the door for opening. Bias means for causing initial folding of door sections for opening, and locking apparatus for resisting folding of the door sections to prevent opening are also provided.