Abstract: An anti-wrap apparatus and method for high speed printing press involves detecting the start of web wrap after web break to deactivate the press motors and apply the press brakes. In addition the detection mechanism which senses a change in the web path, can sever the already printed web being drawn backwards by the start of web wrap, to limit the availability of web material, for web wrap. In the case of difficult to sever web materials, severing action can be enhanced by forcing the web being drawn backwards, against the severing detection mechanism.
Abstract: A bearing construction interposes the coils of one or more coil springs between bearing surfaces. In one embodiment a bearing coil spring is wrapped around a shaft several times. The bearing coil spring may be freely mounted on a more substantial race coil retainer centered on the shaft. In another embodiment toroidal coil springs separated by disc races extend circularly about the shaft. In linear bearing construction, the bearing coils are in planes parallel to the line of shaft movement. Other embodiments of the invention involve disengageable shafts having complementary centering end-faces accommodating misalignment through the yield able action of the bearing spring coils, shafts and housings having non-circular cross-sections, and shafts and housings not having completely complementary surfaces to enable interference fit and positional control.
Type:
Grant
Filed:
November 28, 1989
Date of Patent:
September 24, 1991
Inventors:
Robert H. Cadwallader, Charles P. Coughlin, Thomas J. Walsh
Abstract: A screw adjustment mechanism with pre-set backlash for an ink fountain blade, includes the adjusting screw threadedly mounting two bushings separated by a compression spring which biases the threads of the respective bushings into engagement with opposite sides of the screw thread a desired amount. The biased bushings are each fixed to the fountain blade. The bushings' thread contact with opposite sides of the screw thread effectively eliminates backlash (lost motion), but the contact can be adjusted to provide a desired resistance to screw adjustment.
Abstract: The upper and lower ends of a hollow plastic corner post for a corner structure are each closed off with a device molded of a cuttable plastic whether or not the corner structure continues past the end of the post. The device includes a base having along the sides of one corner risers adapted to be received within the hollow plastic corner post. The other corner is marked with lines indicating distances from the edge near the ridge parallel to the lines. The distances from the outer edges of the corner post to interfering corner structure are measured, and material beyond the lines indicating these distances are cut from the base to form an indented corner. The trimmed device is then seated on the end of the corner post and fastened in position. The device for an end terminating flush with the surface of the structure may need no trimming.
Abstract: An electrically illuminated artificial Christmas tree, eliminating the need for a transformer while providing all of the advantages of low voltage distribution and isolated light failure, connects groups of seed lights in parallel across sets of two wires which are respectively connected in series to wires of different sets, enabling use of an inexpensive power source for establishing suitable levels of low voltage operation.