Abstract: A method by which many identical wooden necks for solid-body electric guitars are manufactured, these being of the conventional type wherein the inner neck ends are connected to the solid bodies by screws. Edge regions of the undersides of at least some of the necks are then routed-out to form a tongue on each routed neck, the tongue extending longitudinally of the neck. Solid wooden bodies are provided for the routed necks, and there are formed in such bodies tongue pockets that correspond generally to the tongues and are shaped to receive them. The tongues are then mounted in the respective tongue pockets and adhesively secured there.

Abstract: A safe has, in addition to its strong body and door and its combination lock knob and dial, a security mask that is strongly and fixedly secured to the upper side of the door over major portions of the dial, for the purpose of preventing a burglar from hammering on the dial and then driving the spindle and actuating the relockers of the safe. In accordance with another aspect of the invention, an anti auto-dialer is fixedly connected to the security mask over the knob of the combination lock mechanism, to prevent operative engagement between the knob and an auto-dialer mechanism while at the same time permitting manual operation of the knob to work the combination.

Abstract: A tree root-control barrier system formed by a plurality of panels having vertical ridges thereon. Then panels are embedded in the earth between a sidewalk and a tree whose roots are to be controlled. Upper and lower cross-members are provided on the panels at their upper edges, and perform various functions including sun protection, protection against lawn trimmers, protection against the growing of tree roots above the ground, and others.

Abstract: The film-type electrical power resistor includes a flat ceramic chip on the upper surface of which is screen-printed a resistive film. Terminals (leads) are mechanically and electrically connected to the upper chip surface, the terminals being such that the chip may be positioned by the terminals in a predetermined position in a mold cavity during manufacture of the resistor--prior to introduction of synthetic resin. The synthetic resin forms a molded electrically insulating body that embeds the portions of the terminals that are relatively near the chip, and also embeds the upper portion of the chip, but does not embed the bottom surface of the chip. The relationships are such that the lower chip surface may be engaged flatwise with a flat region of a chassis or heatsink. Accordingly, the chip is a substrate for the film, a heatsink for the film, an insulator maintaining the film electrically insulated from the chassis, and a spacer maintaining the terminals spaced from the chassis.

Abstract: The power resistor has a metal housing and heatsink, the bottom wall of which is planar and has a bolt hole therethrough for tight securing of the resistor to a chassis. A planar film-type power resistor is mounted in the housing and encapsulated therein, being held close to the bottom wall of the housing. Heat from the film-type resistor passes through the bottom wall into the chassis, the result being that the power rating of the resistor is high. The metal housing is die-cast of a zinc alloy, at extremely low cost yet with substantially the same heat-transmission characteristic as that of conventional die-castable aluminum alloys.

Abstract: A film-type resistor having a high power rating and a relatively low manufacturing cost. The structural strength of the resistor is derived primarily from a molded body that covers both a film-coated substrate and a heatsink. The heatsink, to which the substrate is bonded in high thermal-conductivity relationship, has an exposed flat bottom surface of relatively large area.

Abstract: A combination noise suppressor and air filter fits closely around a pressure regulator for milking machines, in such tight-fitting sealed relationship that little or no air or dirt can enter except through a relatively large diameter washable air filter which can be removed and cleaned even while the milking machine is running. The air passing inwardly through such filter also passes through the bars of a cage which support the filter against collapse. A noise suppressor, formed of a laminate of rigid and soft synthetic resin, is provided, and has apertures therethrough through which air passes downwardly after entering through the air filter. After thus passing downwardly, the air is in a chamber that contains the inlet ports of the pressure regulator portion of the combination, the upper wall of the chamber having convolutions which cooperate with sound-absorbing side and bottom walls of the chamber to absorb sound that is generated when air enters into the regulator.

Abstract: A synthetic resin frame, having a single foot extending laterally from it, has a roller mounted for rotation about a bearing element that extends into holes in the sides of the frame. A combination line guard and bearing-retaining element is snapped over the frame. The ends of the line guard and bearing-retaining element hold the bearing in position, while openings in the line guard guide the line and substantially prevent it from contacting the synthetic resin. The line guard and bearing retainer is formed of material more wear resistant than that of the frame.

Abstract: Disclosed is a mounting structure incorporating an exposed micro-sample of a particulate dry solid of interest, including a discrete adhesive covered circular plastic disc having a uniform exposed mono-layer of the particulate solid adhered to the surface of the adhesive and a handle mounted to the opposite side of the disc to facilitate exposure and retrieval of the micro-sample to and from various reactive media. The disc, adhesive and handle portion mounting the disc are of transparent generally inert, polypropylene plastic and acrylic adhesive materials, which are chemically dissimiliar to and non-reactive with the particulate solid.

Abstract: An adjustable saddle mechanism for a guitar string comprises upper and lower saddle elements. A compound lever system is provided to lock the saddle elements in any one of an infinite number of positions.

Abstract: A valve is provided which includes a valve body having a passageway from an inlet end to an outlet end and a tapered annular valve seat intermediate the ends, a plastic poppet being provided with a disc portion and a tapered portion which can engage the valve seat, the tapered part being stepped to provide a deflectable outer edge portion, the poppet including three beams which extend toward the inlet end of the body and are bent outwardly to enter a groove in the valve body, thereby providing resilient means to bias the poppet to a closed position. The valve body includes a transverse wall adjacent the valve seat, the wall having openings for allowing flow through the passageway and also including an opening that receives a post projecting from the poppet toward the outlet end and beyond the wall for engagement by a mating connector to displace the poppet to its open position.

Abstract: A method of determining populations of live, whole bacteria electrochemically. The bacteria are filtered, and the filtrate is employed in association with an electrochemical measuring unit to determine the bacteria density. In accordance with a flow-through method, the average signal over the predetermined time period of the test is employed, in conjunction with a constant, to determine the population. In accordance with the bypass method, reagent is passed through a bypass line to the electrochemical measuring unit, and the resulting signal is subtracted from the signal resulting from the filtrate, a constant being employed to correlate the resulting remainder with bacteria count. A changing-concentration method employs a changing concentration of bacteria in the same fluid to determine populations of bacteria. A saved-sample method employs a second test of the same filtrate, after a predetermined time period, to compensate for any contaminants that may be present.

Abstract: An apparatus and method by which a flat film-type resistor is intentionally caused to thermal-shock fracture in response to a predetermined high-voltage overload condition. A stressed spring wire is mounted on such film-type resistor and connected in circuit with it. A predetermined solder and temperature gradient are employed to hold the spring wire in bent condition until the solder melts, whereupon the spring flexes and the circuit breaks. Heatsink portions are provided in the circuit board for such resistor, and receive terminal pins thereof.

Abstract: The film-type electrical power resistor includes a flat chip of aluminum oxide, having a resistive film screen-printed onto one of its sides. Leads are bonded to that side and electrically connected to the film, the leads being such that the chip may be cantilevered by the leads in a mold cavity before introduction of synthetic resin into the cavity, and with the lower chip surface spaced above the bottom cavity wall. A molded body is molded in the cavity to fully encapsulate the chip, film, and inner ends of the leads, there being no mold cup around the molded body. The molded body is formed of high thermal-conductivity thermosetting synthetic resin. Provided through the body is a bolthole for clamping of the resistor to an external chassis or heatsink. The space between the bottom surface of the chip and the flat bottom surface of the molded body is a heat-sinking volume formed of the high thermal-conductivity resin; and the bottom surface of such volume of resin is the bottom surface of the resistor.

Abstract: A method of bathing and soaking the perineum of women, including postpartum women, by standing in the shower and directing water from the shown head into an open-topped vessel held between the upper-inner thighs. The related apparatus incorporates dam means to assure that excessive water velocities do not occur.

Abstract: A method of making a compact high-voltage, high-power, thick-film screen-printed cylindrical resistor. A V-serpentine pattern is formed and adapted to fit on a cylindrical substrate having a diameter range of about 1/10 inch to about 1/2 inch. Such pattern is caused to have adjacent sections at a small acute angle to each other. Furthermore, the pattern is caused to have gaps at the open ends of the loops that are substantially wider than the gaps at the closed ends of the loops. In addition, the pattern is caused to have a sufficient number of undulations, and sufficient gap size, to achieve a predetermined voltage rating. Thereafter, the height of the pattern is changed to achieve a voltage coefficient substantially corresponding to the desired voltage coefficient. Furthermore, the resistive film material is altered to cause it to have a different resistivity, said latter resistivity being such that the same resistance value is achieved.

Abstract: The apparatus comprises reciprocating footpads to which are coupled a D.C. electric motor. A D.C. power supply and control means are assocated with the motor to vary the voltage delivered to it. A load sensor and isolator sense the voltage supplied by the power supply, and also sense the voltage present at the motor terminals during periods when no power is being supplied to the motor by the power supply. The sensor and isolator also isolate the motor from the power supply during certain periods, namely when the power supplied to the motor by the exerciser is greater than that supplied by the power supply. An electrical load circuit and load set vary the motor load.

Abstract: An arrangement for driving a rotary tool is provided in which the tool shank is engaged and frictionally driven by the engagement of three or more drive rollers. Axial movement of the tool is accomplished by tilting the axes of the rollers as permitted by flexible portions of the shafts which drive the rollers. The tool is released by moving one roller away from the other two. A pressure foot is provided at the bottom of the assembly reciprocated by a cam arrangement to engage the workpiece when the tool is in operation. A position pick-off senses the axial position of the tool so that the tilt angle of the rollers can be controlled by a dual feedback path servo loop having an improved preconditioning circuit for its feedback position counter.