Abstract: A printer for printing an image on an image receiving material provided on a backing material, the backing material having regularly spaced markings provided on the back thereof, said printer including a detector for detecting said markings, and a device for determining at least one of a spacing between two markings and a width of a marking, comparing the determined marking width and/or spacing with a respective reference value and for causing printing to be stopped if at least one of the determined spacing and/or width differs from the respective reference value by more than a predetermined amount.

Abstract: This invention concerns the drilling of boreholes in the earth. It concerns a rotary drilling system having a particular bottom hole assembly (BHA) for use in increasing or decreasing the angle of deviation from the vertical of a borehole. It also teaches a method whereby the angle of deviation can be calculated for each assembly. There is one assembly disclosed for increasing the angle of deviation and another assembly disclosed for decreasing the angle of deviation. Also disclosed is a novel "universal stabilizer" for use in the bottom hole assembly.

Abstract: This invention concerns the drilling of boreholes in the earth. It concerns a rotary drilling system having a particular bottom hole assembly (BHA) for use in increasing or decreasing the angle of deviation from the vertical of a borehole. It also teaches a method whereby the angle of deviation can be calculated for each assembly. There is one assembly disclosed for increasing the angle of deviation and another assembly disclosed for decreasing the angle of deviation. Also disclosed is a novel "universal stabilizer" for use in the bottom hole assembly.

Abstract: A power shift transmission having a fluid pressure control system having an intake screen and level control located centrally in the bottom of the sump and a pump and regulator valve supplying pressure to the shift control system and to a sump oil level control. The sump oil level control has a small float controlling a relay valve to control an oil level control valve connecting an elevated oil reservoir for gravity feed to fill the sump and pressure return to the reservoir to dump the sump. When the transmission input and pump is not driven, there is no pressure in the chambers at opposite ends of the differential land area level valve and balanced springs hold the level valve in a central closed position blocking flow to and from the reservoir, to the sump and from the pressure line so the oil level control is inoperative. When the transmission input is driven, a small flow of line pressure is supplied through an inlet restriction to each chamber.