Abstract: Filing unit for the storage of recording tape cassettes in which one or more loose leaf pages or sheets are insertable in a loose leaf ring binder. Each sheet has a plurality of retainer clips affixed thereto. The clips are formed from a strip of resilient material with a base portion and upwardly extending post portions spaced apart a distance approximately equal to the reel spacing of the cassettes to be held thereby. Each post extends generally perpendicularly from the base and includes an upwardly opening slot defining two spring finger portions, each having an outwardly extending lug at its upper edge to snugly engage the wall within the reel opening of the cassette.

Abstract: Hitch for coupling together a self-propelled hauling vehicle or tractor and a separate earth moving rig or backhoe which includes hydraulic stabilizers for raising and lowering the coupling end portion of the backhoe. The tractor and backhoe are each provided with interengageable coupling elements and when the tractor and backhoe are to be hitched up they are positioned in contiguous end-to-end relationship and the coupling end of the backhoe is lowered for interengagement of respective coupling elements. The tractor has inclined laterally spaced guideways sloping downwardly one toward the other. The backhoe is provided with a guide member which extends outwardly from the coupling end of the backhoe so as to be at least partially coextensive longitudinally with the inclined guideways for engagement therewith when the tractor and backhoe are positioned in end-to-end contiguous relation. The backhoe is then lowered for coupling interengagement of their respective coupling elements.

Abstract: Sheet stacking apparatus having a variable speed conveyor on which sheets are carried in partially overlapped or "shingled" relation and deposited onto a second variable speed conveyor disposed in end-to-end relation to the first conveyor for receiving sheets therefrom and projecting onto a vertically movable stacking conveyor which lowers automatically as the stack builds up. Feed stop mechanism is disposed to stop and release selectively the flow of sheets from the first conveyor onto the second conveyor in response to the "full stack" position of the stacking conveyor. Control means is provided for changing the speed of the two conveyors in sequential relationship to the actuation of the stop mechanism whereby the speed of the first conveyor is substantially reduced, while the speed of the second conveyor is substantially increased to clear the latter preparatory to discharge of the stacking conveyor.

Abstract: A binder for filing microfiche cards together with a portable card viewer, said binder having a pair of hinged cover panels connected by a U-shaped assembly and a looseleaf binding mechanism mounted between the sides of said assembly above the back panel thereof thereby forming a compartment between said binding mechanism and said back panel. Said back panel being provided with an opening for receiving the barrel of the card viewer when said viewer is held against said back panel of said assembly by a releasable retainer flap.

Abstract: A breakerless condenser discharge ignition system for an internal combustion engine and excited by a rotating permanent magnet, consists of a single module, containing a number of windings and electrical components, mounted on one pole of a ferromagnetic core for producing high voltage output pulses for firing an associated spark plug.

Abstract: Tool holder having a row of spaced tool supporting sockets each adapted to receive and support in an upright position therein the shank portion of one of a series of drill bits of increasing diametrical size from one end to the other end of the row. The tool holder includes a second row of tool supporting sockets spaced from the first row and adapted to receive and support in an upright position therein the shank portion of one of a series of thread cutting taps of increasing diametrical size from one end to the other end of said second row. Indicia are provided which extend from each tap socket toward a predetermined correlative pair of spaced drill sockets. Each such pair of drill sockets is adapted to retain therein the proper tap drill and clearance drill for each corresponding tap.

Abstract: A reamer having an internal coolant passage therethrough and a fluid dispersing member slidingly disposed in said passage, said dispersing member having a lower portion which extends from a point within said reamer to a point outside of said reamer, whereby said dispersing member is displaceable into the coolant passage upon contact by said lower portion with the bottom of a hole being reamed.

Abstract: A full cone spray nozzle, particularly for liquids bearing fibrous particles and the like, having a pair of swirl imparting vanes within the bore of the nozzle. Transversely of the bore, the vanes are approximately semi-circular segments, each having a central recess to provide an opening for liquid flow in axial alignment with the outlet orifice of the nozzle. The vanes overlap circumferentially on diametrically opposite sides of the opening. In the direction of liquid flow, each semi-circular segment is generally sinusoidal, having a convex loop in one quadrant of the passage facing upstream and a concave loop also facing upstream in an adjacent quadrant of the passage. The curved loop portions of each vane are interconnected by an axially extending leg which cross at about the center of the bore and being recessed define the central opening.

Abstract: Two main speaker enclosures when latched to each other at their open faces for transport purposes, enclose chambers that are of an internal configuration and dimension to respectively receive and hold two abutting auxiliary speakers in assembled relationship provided the two auxiliary speakers are inserted in a predetermined orientation. The chambers are formed by forwardly diverging walls of the speaker enclosures.

Abstract: Mobile shoring rig to be used during excavation of trenches for laying underground pipe of varying diameter, includes a self-propelled carrier movable at ground level straddling the margins of the trench. A shoring frame supported within the carrier is vertically movable relative to the carrier for raising and lowering the frame into the trench being straddled by the carrier. The shoring frame includes a plurality of individual sheets or plates carried by a frame which are vertically movable with and relative to the frame on a plurality of longitudinally spaced guideways. The plates are of varying width to span one or more of the longitudinally spaced guideways and are slidable thereon for vertical movement together with and independently of the shoring frame.

Abstract: The lighted sign enclosure has a transparent, or translucent hollow body, reaching down from the ceiling, and inside the body a U-shaped fluorescent light tube, extending essentially as far down as the hollow body and back up. The body has a top rim, held on a grid of T-bars or similar bars of the ceiling. It is normally used as a sign, and offers a unique way of displaying symbols, especially pictures.

Abstract: Case for accommodating cigarette packages of three different lengths. Two supports of right-angled L-shape are pivoted on the bottom wall of the case for selectively swinging into and out of an operative position and holding each package of lesser length in a desired position relative to the open end of the case.

Abstract: A method for producing extruded blown laminated film, wherein a plurality of layers of a molten thermplastic material are rotated about a common axis and combined during continuing rotation to form said film.

Abstract: A method of removing high temperature brazing alloys from a stainless steel base wherein the brazing alloy is treated with an aqueous solution of an alkali cyanide and a nitro-substituted aromatic compound and also with an acid solution containing a minor amount of a base metal attack inhibitor.

Abstract: A firing mechanism for a gun having a safety movable to a position which blocks the firing movement of the sear. The elements of the mechanism are generally coplanar and include a hammer pivotable in one direction to fire the gun and in the opposite direction for interengagement with the sear which holds the hammer in a cocked position. The hammer is also rectilinearly movable relative to its pivot point whereby the hammer may be moved into cocked interengagement with the sear while movement of the sear is blocked by the safety.

Abstract: An octagonal dispenser carton for packaging coils of band saw blade stock in bulk lengths is formed from a flat corrugated cardboard blank having a main octagonal center section, rectangular side wall flap sections foldably joined to each edge thereof, and polygonal end wall flaps extending from said side wall sections, said end wall flaps combining when in folded position to securely hold the side walls and without reinforcement to contain a coil of blade stock.

Abstract: A device for driving loads on a horizontal roller conveyor support between pick-up and delivery stations including a carriage mounted to travel back and forth below the conveyor level. The lower end of an upstanding lever arm is pivoted on the carriage and at the upper end of the arm a load engaging cylinder or roll is mounted with its axis forwardly (i.e. in a downstream direction) adjacent the vertical center line of the arm which is yieldably urged to remain at right angles to the plane of conveyor support. In the latter position the top of the roll is slightly elevated by a fraction of an inch above said load support plane. In operation at the pick-up station near the upstream end of carriage travel the roll can freely rotate under a load and the lever is thereby angularly set at an acute angle in the load driving direction.