A sled for training football players in the art of blocking and tackling including any selected number of individual, indentical blocking sections each having a cantileverly supported blocking pad thereon adapted to be struck by a football player; each of the blocking sections is provided with a longitudinal runner having an upwardly extending support member for supporting the cantilever blocking pad support above the runner; the blocking sections are also adapted to be releasably coupled to an ...

A blocking sled for use in training football players includes runners which the player straddles to train him to keep his feet apart. The coach rides on a platform behind the athlete watching the athlete move forward and push the dummy at the front while keeping his body low and below chute bars above him. Outriggers outside the runners give the sled stability.

A blocking-type valve for isolating or closing a fluid path comprises a housing body forming a throughgoing fluid passage and, at an intermediate location along this passage, a valve seat inclined to the general direction in which the passage extends. A valve-closure member is axially shiftable into engagement with the seat and is provided on a sliding rod. The valve body also contains a tubular member or sleeve concentric with the end of the rod carrying the valve-closure member and of a length...

A molded filler material filling the voids between the nodes of dimples in a sheet of inner core double dimpled material having face sheets attached to the nodes of the dimples to form a high strength lightweight panel. This filler material forms pads having a plane surface abutting the undersurface of the face sheets and a contoured configuration abutting the core surfaces to provide a solid sandwich filler reinforcement between the face sheets at selected positions. These blocking material pad...

Loose hay or the like is delivered into a progressively narrowing axial space between two rows of identical teeth which project towards each other from side locations on a pair of obliquely related wheels. The hay or other material is simultaneously compressed and advanced by the teeth as they come together. The teeth form axial boundaries for pockets or chambers in which the hay or other material is compressed into blocks. The radial boundaries of such pockets or chambers are formed by an annul...

A blocking oscillator having a two stage amplifier feeding a two terminal ductive load. The blocking oscillator has a positive feedback, operative during the active period of the circuit, through a diode connected between the first and second amplifier stages. A load coil or inductance is connected to the output of the second stage. The circuit is initiated by the input pulse and is terminated by the maximum current increase in the load coil which inhibits the positive feedback and therefore tur...

A composite foil for imparting a decorative effect to a substrate comprises a carrier film, a decorating layer secured thereto either directly or by way of a release layer, and an adhesive coating secured on the decorating layer either directly or by way of an adhesion-facilitating layer, said decorating layer comprising at least one layer of glass or glass-like material deposited by high vacuum vaporization.

A toggle linkage (70) is provided to interact between a pair of levers (50,52) located between a pair of input functions, i.e. a pair of depressible foot treadles (22,24), and a pair of output functions, i.e. control linkages for operating a variable displacement hydraulic machine (31). Each lever (50,52) of the pair of levers is fixed either to a sleeve (58) or to a shaft (63). The toggle linkage (70) includes a bellcrank (72) pivoted about an axis parallel to the axis of the sleeve (58) and sh...

The invention concerns a device with a mobile part comprising two crowns (1 and 13) rigidly coupled with rods passing through the hub (7) outside the bearings (6). The springs (20) press that frame against the fixed ring (10) such that the pins (21) are engaged in the holes (22). The lever (15) is provided with cam-branches (18) supported by the ring (23). When the lever (15) pivots about the spindles (19) the wheel is blocked or released.

A lens blocking system in which a button is bonded to a lens surface. The button includes a capsule (2) of flowable substance with a flexible portion (3) that is brought into contact with and bonded to the lens surface. The flowable substance allows the flexible portion to conform to the shape of the lens surface, subsequent to which flow is then inhibited. The flowable substance may be a substance that is molten and then subsequently cooled to solidifying temperature after the button has been b...