Abstract: A document file is disclosed having a quick release clamping mechanism. The mechanism includes a tube of resilient and flexible plastic having a central portion anchored in the file and two end portions onto which documents with punched holes can be threaded. The mechanism includes a clamping plate also to be threaded onto the two end portions and having clamping tongues under which the free end portions of the tube can be wedged after passing through holes in the clamping plate. Each clamping tongue has a cam surface to improve the wedging action it imparts to the end portions of the tube.

Abstract: Presenting a plurality of characteristics by presenting each characteristic using a symbol which per se identifies the characteristic by three concurrent visual impressions (quantity, tone, and extent) and is adaptable for use with any desired grey or tone scale.

Abstract: A battery handle for an electrically illuminated diagnostic instrument, the handle being able to accommodate either non-rechargeable or rechargeable cells. The handle is constructed so that rechargeable cells can be recharged without removing the cells from the handle. Non-rechargeable cells are insulated from the recharging circuit so that if the handle is inadvertently placed in a recharging unit with non-rechargeable cells in it, the latter will not be damaged. The handle includes a neck portion to which different diagnostic instruments can be releasably connected, and with no instruments attached the neck portion can be used as a general illuminator with particular utility as a throat illuminator.

Abstract: The spirometer comprises a housing having walls defining a turbine chamber, an antechamber having a blow-in opening and having an annular portion around it and a plurality of passages extending from the annular portion tangentially into the turbine chamber. A shaft extends through the turbine chamber and an air wing rotor is secured to the shaft and is located in the turbine chamber for rotation by the blowing air directed in through the blowing opening and the antechamber and through the passages into the turbine chamber. The housing has a portion with a dial having indications thereon and a pointer and a drag pointer rotatably mounted in the housing over the dial and is movable over the dial to indicate the blowing rate. A reduction gearing is connected between the shaft and the pointer and the drag pointer to rotate the pointer and the drag pointer upon rotation of the shaft. A manually operable, disconnectable coupling is connected between the shaft and the pointer for disengaging the pointer.

Abstract: The invention relates to loose leaf binders for holding periodicals and the object of the invention is to provide a loose leaf binder having a curved back and no rivets visible from the back.For this purpose, the paper-retaining means are fitted to an inner flat spine which is connected to the covers by means of welds extending along the hinge lines between the covers and the outer spine. The covers consist of boards enclosed in flexible polyvinyl chloride sheeting and the outer spine is reinforced with a semi-rigid polyvinyl chloride strip. The inner spine consists of a strip of board enclosed in flexible polyvinyl chloride sheeting, the width of the sheeting being greater than the width of the board strip so that flexible hinges are produced on each side of the strip. When the inner spine is assembled with the covers and outer spine, the welds are produced along the hinge lines so that there is no tendency to tear out the inner spine when the covers are opened and closed.

Abstract: Method and means for reversible sterilization of females in which caps are placed over the fimbriated ends of the Fallopian tubes and sutured to the serosa thereof. The caps block passage of sperm and ova to prevent pregnancy. The caps can be sutured to and removed from the ends of the Fallopian tubes without damage to the transport mechanism of the tubes.

Abstract: A holder for sheets such as sheets of paper with at least a pair of holes along one edge portion for receiving a pair of flexible locking tongues, which are made integral with a plastic strip having slits corresponding to the shape of the tongues for allowing the formation of the tongues, the latter being intended for bending up to a position substantially at right angles to the strip for introduction into the holes of the sheet, and into the appropriate openings of a locking strip having a bottom wall and side walls, for thereafter bending down over the bottom wall. A pair of riders are displaceable along the locking strip subsequently being moved into a position one over either tongue, for retaining it in a downwardly bent position. On its underside intended to be facing towards the bottom wall of the locking strip, each locking tongue is provided with locking teeth intended to engage with complementary locking teeth formed in the bottom wall of the locking strip.

Abstract: An inexpensive polymeric device for releasably retaining a stack of perforated paper, including a pair of rake-like members each comprising a rail supporting projecting studs. The rake-like members are assemblable by inserting studs on each through the paper perforations from opposite sides of the stack and into sockets formed on the other rail to form a ladder-like assembly engaged with the paper. The rails on the ladder-like assembly are slid into close fitting channels defined on a backing strip which extends around the spine edge of the stack to keep the rake-like members in engagement, and are retained therein by end portions of the rails adapted to engage over the ends of the channels. Subsequently a user can squeeze together on cam surfaces on the end portions of the strips to simultaneously disengage them from the ends of the channels and move them into the channels so that the ladder-like assembly can be slid out of the backing strip and disassembled.

Abstract: A method of producing a form suitable for airline ticketing which includes as one exterior ply a web wider than intermediate plies and wherein the overlapping portion is equipped with control openings.

Abstract: Apparatus for use in making entries on a plurality of superimposed sheets with duplication media therebetween and includes a writing board and a smaller movable carriage plate mounted in a guideway of the board, guideway having stops therein to prevent dislodgement of the plate from the board. Indexing projections are attached to the plate for selectively fixing the position of the plate which cooperate with indentations of the guideway. A pair of pins extend upwardly from the board for releasably connecting a record sheet thereto with such sheets at least partially overlying the plate and board. A shield is disposed in at least partially overlying relation to the plate and a record sheet is positionable between the shield and plate. The shield has an elongated horizontal opening for transferring information from pertinent data areas on an entry sheet or check to the record sheet.

Abstract: An improvement in the swimming apparatus shown in U.S. Pat. No. 3,512,416 wherein a waistband in the form of a pair of members is fastened around the waist of a swimmer, the outer member being pivotably connected to a slidable telescopic member which is mounted on the side of a pool; associated with the apparatus are a shock absorber to restrain the telescopic movement and an effort meter to register the movement by the swimmer. In the improvement, an endless belt is attached to a support structure extending over the water. The endless belt is attached to an adjustable pulley member on the support structure and adapted to be double-looped around the swimmer's waist. A belt guide is positioned between the pulley member and the swimmer to hold the endless belt in position.

Abstract: A fastener for detachably interconnecting punched documents is formed as a flat strip of plastics material, which has at its ends oppositely angled projecting tongues to be inserted into the holes in the documents.

Abstract: An assembly for preparing imprinted inserts for hospital identification bracelets includes severable base strips of card stock divided into an identification section and a handle section, and overlaying carbon strips which are retained in position during separation of the strips and imprinting, while being readily removable after the patient information has been imprinted on the identification section by a roller or platten.

Abstract: A starting block assembly for locating at a starting position of a running track. An elongated, ground-anchorable central bar is formed with a pair of back-to-back T-shape lengthwise slide tracks, each opening to a respective side of the bar and receiving therethrough an L-shaped runner which extends from the side of a respective starting block having a spring-tensioned anchor pin receivable in a series of positioning sockets located along the bar. Each triangular shaped block has concave front and rear, transverse contact faces, one with a resilient surface and the other spike-receiving openings to accommodate the shoes of a user. Use of a chosen surface depends on the directional positioning of the assembly. The T-track is self-cleaning of grit which might otherwise jam movement of the L-runner along the track, due to possibility of transversely rocking the block on the longitudinal axis of the runner when the anchor pin is disengaged.

Abstract: A flexible paper fastener of the type having a flexible plastic tubular member flattened at its midportion, a stiff keeper having friction locks engaging opposite end portions of the tubular member, and a stiff U-shaped bridge releasably engaged in the ends of the tubular member is heat sealed along its midportion to a plastic laminated pressure sensitive adhesive sheet for mounting on a support.

Abstract: An improved toe board for athletic events is disclosed wherein the board has an elongate internal channel which forms a track extending substantially along the longitudinal axis thereof. A retractable tape measure is received within the track for movement therealong and an access opening is provided in the front face of the board in communication with the track so that the end tape is accessible and may be pulled out therefrom. Another access opening is provided along the top surface of the board so that a handle may be employed to move the tape measure along the track for measuring purposes.

Abstract: An enlarged print book is produced by microfilming the front and back pages of each sheet of an original book, printing each of such pages from the microfilm at a desired page size, severing each printed page approximately in half, arranging the bottom half of one page above the top half of a succeeding page with the severed upper end or trim line of the bottom half a predetermined distance above the severed lower end or trim line of the top of the succeeding page, microfilming such arrangement on a single film frame, enlarging the single frame to a predetermined extent to produce a single enlarged sheet having the bottom half at its top and top half at its bottom, trimming the top and bottom halves at exactly their respective upper and lower trim lines, folding each enlarged sheet precisely midway between their trim lines with the printed sides of the bottom and top halves exposed, producing each succeeding enlarged sheet from the original book in the above manner, and binding successive enlarged sheets toge

Abstract: A loose leaf binder having a pair of separable front and back cover members respectively hinged to relatively rigid interconnecting numbers of L-shaped cross-section adatped to be interfitted in overlapped relation to provide an expansible back for the binder. The L-shaped back-forming members are respectively provided with a lock post and a lock mechanism adapted to be interengaged by rectilinear insertion of the post into the lock mechanism, which latter is provided with a pair of coacting cylindrical rollers designed to frictionally engage and wedge therebetween opposite sides of the post inserted into the lock mechanism. One of said rollers is held rotatably captive in an axially fixed position while the other roller is movable into and out of wedging engagement with said lock post.

Abstract: A protective barrier for surrounding the upright posts used to support the horizontal bar in a pole-vaulting or high jump pit is disclosed. The device comprises a pair of foam members enclosed within a fabric covering positionable on top of the standard used to support the upright posts. The foam elements are connected together by strap members so that, with the release of one strap, one of the foam members may be hinged away from the other to permit adjustment of the position of the standards and posts.

Abstract: A stiff plastic sheet is heat-scored on spaced parallel lines to form front and rear binder covers hinged at the score lines to a wide backbone. Two post-mounting units formed of similar plastic sheet material have a base strip along one edge and a post-supporting strip along the other edge, connected by a web which is heat-scored so as to flex at two-spaced flex lines and which is cut away at spaced areas to leave a series of straps between the strips so that together they are more flexible than the cover hinges. The base strips are ultrasonically welded to the covers along the inner edges of the covers so as to hold the post-supporting strips for swinging movement about the flex lines which are spaced outward from the hinge lines between the covers and the backbone.