Abstract: Means for dressing a work piece in a lathe having a rotary driven shaft includes a work holder assembly adapted to hold a drum or disc in position for dressing a cylindrical face or a circular end face. The work holder assembly includes adapter members having conical faces for engaging a drum therebetween or for engaging in a central hole of a disc. A rigid circular plate has spaced threaded adjustable bolts bearing on the disc or an end wall of the drum. Spacer members bear against the circular plate. Another bolt seats in an end of the rotary driven shaft while the adapter members, plate, and spacer members are disposed in axial alignment on the shaft. The rigid plate and adjustment bolts hold the work piece in axial alignment with the shaft, and correct distortion in the disc or end wall of the drum. They also prevent vibration of the work piece during dressing.

Abstract: An intravascular loop probe includes two lenticular, compressible, resilient, and expansible wire loops disposed in planes substantially mutually perpendicular to each other for operation in a conduit traversed by a magnetic field externally applied. The loops are insulatively joined at the point of maximum curvature. The wires at the open ends of the loops continue as a wire bundle beyond a ground electrode and are cemented together to form a stem for inserting the probe into the conduit via a catheter. Central portions of loop wires are bared to serve as electrodes. The loop terminal wires which form the stem of the probe are connected to external circuitry so that each of the two orthagonal loops is serviced by a separate circuit.

Abstract: A ventilator system for controlling, assisting, and monitoring a patient's breathing comprising a breathing circuit having hoses for delivering breathing gas to a patient and receiving exhaled gas from the patient. Bellows which are axially compressed and expanded by a detachably coupled gas driven piston, pass fresh breathing gas to the patient via an inhalation hose. A pneumatic assist circuit can be set to initiate and maintain inhalation automatically, or under manual control.

Abstract: A tool holder assembly mountable on a lathe housing for dressing cylindrical and flat walls of drums and disc shaped work pieces respectively, has a mounting plate formed with two mutually perpendicular walls each carrying a short drive shaft. The assembly may be disposed in one position with one wall at the lathe housing so that one shaft is driven by a lathe motor in dressing a drum. The assembly may be disposed in another position with the other wall at the lathe housing so that the other shaft is driven by the lathe motor in dressing a disc.

Abstract: A child carrier comprises an enveloping structure defining a pocket with open top, closed sides and partially closed bottom. A long suspension strap is secured to the enveloping structure at the bottom of the pocket. The strap may be partially padded and has two free end sections for engagement upon an external support. The enveloping structure includes a generally rectangular body which forms sides and back of the pocket, an elongated crotch piece, and a rectangular body piece which forms the front of the pocket. A cross member on the rectangular body has laterally spaced passageways to guide the free end sections of the strap which are then passed around a support and through a loop secured to the bottom of the enveloping structure.

Abstract: A method and system for measuring and monitoring the dynamics of left ventricular contraction by analyzing the signals from an electrocardiogram and signals corresponding to either an invasive aortic pressure pulse (obtained during catherization) or a non-invasive carotid arterial pulse (measured with a piezoelectric crystal). The pressure pulses are differentiated and amplified to produce data indicative of systolic blood flow. This blood flow data is then integrated during the ejection period in synchronism with pulses derived from the electrocardiogram to produce data indicative of the ejected stroke volume. This per beat volumetric data is further integrated over a uniform one minute time interval to yield cardiac output information. The differentiated pressure pulses are further differentiated and amplified to obtain data indicative of the left ventricular forces inparted to the blood flow during systole.

Abstract: A mechanism for automatically engaging a slider upon a pair of slide fastener chains having teeth, includes a curved track which is supplied with sliders from a hopper. One slider at a time moves to a position in front of a carrier on which is mounted a pivotable lever. The first slider from the hopper is held in position by a horizontal retractable pin extending to the track. The lever has a foot which clamps the end slider from the hopper. Jaws carrying a pair of slide fastener chains move to the clamped slider which is moved by the carrier toward the jaws. The adjacent end of each chain is inserted into the body of the clamped slider as the carrier moves forwardly. The carrier continues to move forwardly with the lever and clamped slider causing the teeth of the chains to close. The jaws and lever then release the new assembly of slider and two engaged chains, and other jaws grasp the new slide fastener assembly and move it to another processing station.

Abstract: A mechanism for automatically engaging a slider upon a pair of slide fastener chains having teeth, includes a curved track which is supplied with sliders from a hopper. One slider at a time moves to a position in front of a carrier on which is mounted a pivotable lever. The first slider from the hopper is held in position by a horizontal retractable pin extending to the track. The lever has a foot which clamps the end slider from the hopper. Jaws carrying a pair of slide fastener chains move to the clamped slider which is moved by the carrier toward the jaws. The adjacent end of each chain is inserted into the body of the clamped slider as the carrier moves forwardly. The carrier continues to move forwardly with the lever and clamped slider causing the teeth of the chains to close. The jaws and lever then release the new assembly of slider and two engaged chains, and other jaws grasp the new slide fastener assembly and move it to another processing station.

Abstract: A variable character display device includes a base plate on which is a multiplicity of variable segment display mechanisms. Each mechanism comprises a substantially flat display segment carried by a rotatable arm. A magnet secured to the arm is magnetically rotated by an electrically energized coil which creates a magnetic circuit through two magnetizable poles respectively disposed adjacent to opposite sides of the magnet. The mechanism is housed in a casing which is trapezoidal in axial section so that the display face of the segment is wholly concealed when the display segment is in retracted position. Abutments on a frame are used to stop rotation of the arm in a retracted position, and in a display position. The device dispenses with the usual face plate and mask so that the entire display faces of the segments are exposed when a character is displayed.

Abstract: A parabolic reflector is made of sheet material from a flat pliable elongated blank bent to form a parabolically curved shield shaped member. Both blank and member have continuously varying transverse widths from end to end thereof and terminate in a pointed lobe at one end or in two pointed lobes at opposite ends. Opposite lateral edges of the blank and member are oppositely curved. The blank and member are symmetrical on opposite sides of a central longitudinal line. The member is parabolically curved longitudinally from end to end and is straight transversely from end to end. The member can be formed by applying a force to the pointed end of single lobed blank while clamping the other end, or by applying equal forces to the pointed ends of a double lobed member. A plurality of parabolically curved members may be disposed side-by-side to increase the area of reflection. A plurality of double lobed members may be attached together at their centers and spread angularly apart to define a parabolic bowl.

Abstract: Optical apparatus for displaying enlargements of graphic copy includes a platform carrying a television camera having an optical pickup lens. The platform is rotatable on a horizontal axis. An arm is secured to the platform and extends downwardly toward the copy. A frame is pivotably secured to the arm to bear on the copy and outline an image scanning field. A mirror is pivotably secured to the platform and is adjustable in an optical path including the lens and frame. The platform has depending legs carrying wheels or casters. A handle on the arm facilitates lifting the frame off the copy and moving the apparatus in a horizontal plane.

Abstract: A grinding tool for the inside of cylinder has a motor driven stem carrying a hub on which is a notched hub member detachably securing ends of three flexible legs. A shoe having a fixed grindstone is pivotally attached to each of the legs and is releasably held by a spring clip. A sleeve surrounds the hub member to help hold the legs in place. A nut secures the sleeve on the hub member. An annular flange is loosely fitted on the hub and is held by the nut to serve as a stationary hand grip while the remainder of the tool rotates.

Abstract: A hypodermic jet injection device has a reciprocatable piston for discharging fluid from a chamber. A reciprocatable hollow plunger connected to the piston is hydraulically retracted against a spring bias to compress a coil spring. The plunger is hydraulically released to cause discharge of the fluid with maximum initial force and minimum final force determined by characteristics of the spring. An adjustment knob may be rotated to determine precompression of the spring. A first adapter assembly quickly mountable and dismountable on the adjustment knob includes a shaft adjustably positioned axially inside the plunger to limit retraction of the plunger and compression of the spring so that the maximum initial force of fluid discharge is reduced. Another adapter assembly may be used in place of the first adapter assembly and is also quickly mountable and dismountable on the adjustment knob and includes a housing carrying another shaft insertable into the plunger to abut one end thereof.