Abstract: A training device for competitive swimmers in the form of a drag producing belt adapted to be worn over the swimmer's regular suit or trunks. The drag producing belt adds weight and increases the resistance (drag) to the swimmer's movement through the water and thus helps in the development of the swimming muscles. The increased drag is caused by normally open ended pockets that are secured to the belt in such a manner that they act as scoops as the swimmer moves through the water. Water entering the pockets is impeded in flowing through them whereby the drag is created. The pockets are located on the belt so that the drag is distributed evenly on the swimmer with no imbalance tending to cause the swimmer to roll or dip.

Abstract: A system for injecting foam insulation into a wall cavity or the like that includes a flow control section having a detecting means for automatically inhibiting the control section when the gun is placed in an inoperative or off condition.

Abstract: A conveyor system for transporting articles through a generally planar conveying zone. The system includes a coacting pair of endless drive chains that are moved in unison through the conveying zone. Rollers are equally spaced along the length of each chain with the rollers in one row being axially aligned with the rollers in the second row along common axes of rotation that are perpendicular to the direction of motion of the chains. Light weight hollow cylinders are seated on top of the chain with the cylinders resting in contact with two adjacent rollers in each row. A guide means extends along the chains's path of travel from the end of the conveying zone to the start thereof and serves to hold the cylinders in contact with the rollers as the chains are being returned to the start of the conveying zone. Actuating means are also provided to impart a prescribed motion to the cylinders while they are in the conveying zone for further controlling the speed of an article passing therethrough.

Abstract: An archery bow having a riser capable of being gripped by an archer from which is centilevered upper and lower spring members. Bow limbs are pivotably suspended from the free end of each spring member at the midsection thereof so that each limb hangs on the archer's side of the bow. A bow string is attached to upwardly extended tips of the limbs. Cams, which are rotatably supported from the top and bottom sections of the riser, are connected to the lower portion of each limb by means of a control cable that is reeved to the working profile of the cam. One end of the control cable is secured to the base of the associated limb while the opposite end is secured to the limb's midsection to hold the control cable taut against the working surface of the associated cam. Accordingly, as the bow is drawn, the pull weight delivered to the bow string is controlled by the cam system to provide maximum pull weight at an intermediate draw position.

Abstract: A safety release closure suitable for use in a mass transit vehicle which can be rapidly and efficiently removed either inwardly or outwardly in case of an emergency. The closure includes a removable sash that is mounted within a frame opening and secured in place by means of inside and outside deformable seals disposed between the frame and the inside and outside margins of the sash. The perimeter walls of the opening that face the sash are contoured so that the opening is wider across both edges than it is along the middepth region whereby the sash can be easily removed in both directions without it becoming wedged or otherwise jammed in the frame. Means for stripping the seals on both sides of the sash are provided for as are handle means which enable a person to pull the sash out of the frame after the seal has been removed.

Abstract: A pin registration system for use in lithography wherein a photonegative of the original information to be reproduced is laid out upon a strip sheet and a sensitized lithographic plate exposed through the strip sheet to record the information thereon in the form of a developable latent image. The system includes a layout board containing a pair of registration pins of a given diameter which are in registration with a set of holes pre-cut in the lithographic plate. The strip sheet is precisely fitted upon the board over the pins and the layout work developed in reference to the location of the pins. Upon completion of the layout work, the strip sheet is cut away about the imaged areas contained on the negative and the sheet aligned with the plate using the complimentary pair of holes provided in each element and the plate exposed through the sheet to record an image of the original thereon.

Abstract: A counter pressure system for use in a stringed instrument of the type played with a bow for improving the tone of the instrument in both volume and in quality. The system includes the main or melody producing strings and one or more counter pressure strings that are arranged to accept at least part of the pressure from the main strings and transfer it away from the main bridge. The relieved pressure is redistributed by the counter pressure system in a manner that extends the quality of sound produced by the instrument. In practice, part of the total string pressure is translated to the sound box via the main bridge while the remaining pressure is imparted to the box via an auxiliary bridge located forward of the main bridge. A sounding post is located under one foot of each bridge which, in the case of a violin, would be the foot on the E string side of the instrument.

Abstract: A reversible ratchet wrench handle in which the actuator for the direction reversing mechanism is located close to the portion of the handle that is grasped by the user. This permits the user to operate the actuator with the thumb of the hand holding the handle whereby changing the direction of operation of the wrench is a one handed rather than a two handed operation. Locating the actuator near the hand grip portion of the handle also removes it from the head of the handle, the usual location, and this allows the head to be made thinner for better access to narrow places. The actuator for the direction reversing mechanism is a switch button that is movable back and forth axially of the wrench handle and this kind of movement insures more positive action.

Abstract: An electrical machine in which a frame supporting the rotor windings is coupled to the machine shaft through a planetary gear system housed within the rotor structure. The internal ring gear of the planetary system forms a part of the motor rotor structure. Further locking devices are provided to lock the various movable components making up the drive system together or to the motor casing so that a variety of speeds can be selectively attained at the output shaft or shafts of the motor without changing the motor speed.

Abstract: A coupler for rapidly joining a snowplow unit to a prime mover. A horizontally extended tongue is affixed to the push frame of the plow unit which is insertable into a receiving slot contained in the coupler. The tongue is provided with a pair of contoured camming surfaces that are arranged to translate a prescribed motion to a pair of jaw elements contained in a locking mechanism carried by the coupler. The jaw elements are biased to move in contact with the camming surfaces to first move to a fully opened position to allow the tongue to pass into the coupler and then into closed or locked position wherein the push frame of the plow unit is securely drawn into seated contact against the front wall of the coupler.

Abstract: A color endoscope having a compact viewing head that is easily inserted into a relatively small opening or cavity and an electrical section that is capable of producing a readout signal containing full color image information that is compatible with standard format television for storing, displaying or otherwise processing the color information.

Abstract: An improved brassiere for a person who has had a mastectomy operation. The brassiere may comprise a conventional garment in which at least one of the bust cups is adapted to receive and hold an artificial bust form. The cup in which the bust form is received is provided with an inside liner member that coacts with the cup to form a pocket enclosure for the form. The liner member is a unitary piece of bias cut soft material that extends continuously from a point adjacent the center of the brassiere, across the bust form receiving cup and out to the end of the adjacent side strap. The liner member is dimensioned so that its peripheral edges extend beyond the peripheral edges of the cup and strap thereby preventing the edges of the latter from contacting the wearer.

Abstract: A blood pressure measuring and recording device that utilizes a piezoelectric crystal transducer for sensing the pressure of the blood in the brachial artery. The transducer is positioned in the cuff in an unrestricted manner whereby it in effect "floats". The cuff pressure and blood pressure coact to cause the crystal transducer to produce a waveform in which the relationship of the amplitudes of the positive and negative pulses indicate the systolic and diastolic pressures. Means are provided in the circuitry of the device for accurately distinguishing blood pressure pulses from spurious signals.

Abstract: A hand held sighting device for golfers, particularly for use in determining correct putting directions on sloping putting greens. The device is a box-like, transparent receptacle in which a pointer is pivotally mounted. The lower end of the pointer is weighted so that it operates in the manner of a plumb bob. One of the sides of the receptacle has a central longitudinal line that passes through the pivot axis of the pointer and a plurality of transverse lines one of which also passes through the pivot axis of the pointer. In use, the golfer stands or kneels directly behind the ball facing the cup and sights through the device with his dominant eye. The eye of the golfer, the ball, the longitudinal line of the device and the cup must be brought into line, and one of the lower transverse lines must pass through the cup.

Abstract: Method and apparatus for automatically assembling and banding together the component parts of an expansion shell of the type typically used in a mine bolt assembly. The parts are loaded into a die position in a first work station wherein a tapered wedge is supported within a central hole passing through the die and two shell sections are seated on inclined sides located on opposite sides of the hole. A thin metal U-shaped strap is placed between die mounted guides so that the legs of the strap are positioned between raised ears carried by the shell segments and the base of the strap passes over the wedge. The die is advanced into a second work station where the ears are coined against the strap.

Abstract: A quick-acting closure unit for temporarily sealing the open end of a line used to convey a fluid under pressure. A cylindrical sleeve having a lower section that is tapered inwardly is passed over the open end of the line which contains a collapsible jaw means slidably mounted within the lower section that encircles the line. A cup-like member, which is also slidably mounted in the sleeve, is passed over the open end of the line and contains a sealing assembly that, when compressed, produces a fluid-tight seal between the cup and the line. A camming lever is arranged to act between the sleeve and the cup to force the cup downwardly into driving contact with the jaw means. The downward movement of the cup initially causes the seal to be compressed thereby closing off the line and then forces the jaws into holding contact with the line to secure the unit in a sealing posture thereon.