Abstract: The invention relates to a transmission for driving a movable element, particularly a component in a machine tool, at high speed or creep speed, in the form of a divided drive having one branch for the transmission of high speed and one branch for the transmission of creep speed and at least one member in one of the two branches being locked when creep speed is selected. The invention provides that for high speed and creep speed a pulse motor is provided and that for compensating the error in the actual position of the movable element from its required position an adjusting clutch is provided.

Abstract: An arrangement in a motor vehicle safety harness permitting said harness to be fastened in various positions of adjustment and comprising a slide to which one end of the harness is attached, said slide running along a guide member and provided both with a locking pin moving freely in a bore in said slide, and also with a clamping bolt, said bolt arranged, when turned in one direction, to press said locking pin into engagement with said guide member, thus fastening the harness in the desired position along the guide member.

Abstract: A system which will provide emergency lighting as desired when the normal power supply such as the utility power is interrupted or otherwise not available. The system provides the emergency power by means of the same wiring that is used to provide the utility power to the lights. In addition, the "on-off" switch or switches used to control the turning on and off of the lights when the utility power is available also provides control of the lights when the emergency supply is being utilized.

Abstract: Filtration apparatus that is very versatile is disclosed. The apparatus includes a porous filter disc that can be readily interchanged with other filter discs having the same or different porosity. In addition, a membrane filter can be used in conjunction with the porous filter disc. The porous filter disc serves as a support for the membrane filter. The porous filter disc and membrane when provided are designed to interfit with the balance of the filtration apparatus in such a manner that the filtration unit is simple in construction and highly versatile in use.

Abstract: A portable folding crib housed in a suitcase or similar piece of luggage is disclosed. In the basic embodiment, the crib-suitcase combination is so constructed that a majority of the total volume of the suitcase is preserved as two compartments for storing the crib mattress, clothing, and the like. Each of the two compartments is covered by a separate hinged door, the two doors forming the floor of the crib when the crib is erected. The crib structure when folded fits around the storage compartments which are covered by the hinged doors. When folded and closed, the structure has the appearance of an ordinary suitcase and is as readily transportable as the average packed suitcase. To utilize the crib, one fully opens the suitcase and unfolds the crib into its erected position. No mechanical skill or special tools are necessary to unfold or refold the crib. In addition to the basic embodiment, several additional embodiments of the invention are disclosed.

Abstract: A combination vent and shut off valve for use in conjunction with a vessel having pressurized fluid therein, comprising a stem having a hollow cylindrical body portion with its inner end connected to an opening in the vessel. A stem head portion extends from the outer end of the stem body, and has a hole extending therethrough in alignment with the hollow body, the head portion having an outer diameter greater than that of the hollow body so that a shoulder is formed where the stem body and stem head meet. The outer end of the head terminates in an annular guide member having a diameter greater than the head. The head is provided with a fluid feed slot connecting the head hole with the outside of the head. A resilient cap is assembled onto the stem for reciprocation thereon and comprises a cylindrical hollow body sized to slidably fit over the stem head guide, said cap body having a closed end and an open end.

Abstract: Protective plates for protecting against two common methods of breaking and entering an automobile trunk are disclosed. One plate is mounted on the outside of the trunk lid and the other plate is mounted on the inside of the trunk lid. The plate mounted on the outside of the trunk lid protects the trunk lid in the immediate area of the trunk lock. The plate mounted on the inside of the trunk lid protects against forceable removal of the lock cylinder. The plate that is mounted on the outside of the trunk lid surrounds the trunk lock and has a central opening to permit access to the trunk lock. Two threaded studs secured to this outside plate pass through holes drilled in the trunk lid and through holes provided in the plate that is mounted on the inside of the trunk lid. The plate mounted on the inside of the trunk lid has a central opening and is slipped over the trunk lock cylinder and over the two studs of the outside mounted plate.

Abstract: This invention relates to push rod apparatus for propelling wheel chairs. Several different embodiments of the invention are disclosed. All the embodiments include a plurality of push rod mechanisms that provide the occupant with a means to propel a wheel chair in a forward and reverse direction. In addition, the push rod mechanisms of the various embodiments all include means to move the push rods away from and toward the center of the rear wheels of the wheel chair to which the push rods have been added. The push rods are extended away from the rear wheels of the wheel chair when in their uppermost position to place the push rods in a better position to be engaged by the occupant of the wheel chair and retract toward the center of the rear wheels in their lowermost position so that the push rods will not contact the surface on which the wheel chair is moving.

Abstract: A hypodermic injection device comprising a cartridge holder having a cylindrical body open at one end and closed at the other end, the closed end being provided with an aperture, a cartridge with the holder, the cartridge including an ampoule having a cylindrical sleeve open at one end and having a necked portion at the other end to receive a hub mounting a cannula, the cannula facing the apertured end of the cylindrical body, a piston slidably carried within the sleeve adjacent the open end thereof to define a medicament chamber between the piston and cannula, fluid medicament in the medicament chamber, the piston having a concave face on the side forming one end of the medicament chamber, a spring power assembly adjacent the open end of the ampoule sleeve for moving the cartridge forward and for injecting the fluid medicament, spacer means positionable between the outer face of the piston and the adjacent spring power means to vary the position of the piston within the ampoule sleeve and thereby control the

Abstract: An I.V. injector having a cylindrical barrel open at one end and closed at the other end by sealing means, a cannula mounted on the closed end outwardly from the sealing means, a plunger slidably carried in the open end of the barrel, a chamber formed in the barrel between the plunger and the sealing means, said chamber being adapted to receive a high concentrate I.V. medicament, and a safety member on the closed end of the barrel to render the injector impractical for use in intravenous injection of the I.V. medicament into a patient.

Abstract: Electrochemical energy cells are disclosed. The energy cells are basically reserve-type batteries in which the electrolyte is separated from the electrodes until the battery is ready for use. In a first embodiment, the battery is a cylindrical battery in which the electrolyte is stored in a frangible envelope inside the battery case and above the electrode structure. Means are provided to break the envelope holding the electrolyte to permit the electrolyte to flow into the electrode cavity. The anode and cathode are designed to permit free flow of the electrolyte. In a second embodiment, the battery is also cylindrically shaped but is formed in a very thin or short cylinder. In this second embodiment the electrolyte is stored in a frangible envelope in the center of the battery casing. Again, means are provided to break the frangible envelope so that the electrolyte can flow into the electrode cavity and activate the battery.

Abstract: Ground fault detection circuitry for sensing ground fault currents is dissed. If ground fault occurs in a line conductor(s) in a distribution system supplying AC power to a load, the circuitry senses this ground fault and provides a signal in response to the sensing of the ground fault. The circuitry also senses the grounding of a neutral conductor, or in some systems the shorting of a line conductor by a parallel conductive path and provides a signal in response to the grounding of the neutral or the parallel conductive shorting path. The signals provided by the circuitry in response to these sensed conditions may be used to provide a visual or audible alarm, or may be used to remove power from the load.

Abstract: This invention relates to apparatus adaptable for use on a double acting press for producing high reduction metallic cups of high quality. The double acting press is provided with a crankshaft having a pair of offset cranks for attachment to the outer punch holder and the redraw horn assembly to produce a time lag between the operation of the outer punch holder and the redraw horn assembly.

Abstract: An electrode shield for protecting the fragile part or parts of a measuring electrode when said electrode is being utilized is disclosed. The shield is so designed that it provides protection to the fragile electrode without interfering with the functioning of the electrode.