An upgraded railway freight car brake control valve device comprises a novel emergency valve portion that embodies therein a minimum number of simple and inexpensive poppet valves, one of which is a double seated valve, that replaces yet performs the same functions heretofore performed by more expensive slide type valves which slide valves, and the flat seats upon which they slide as they are shifted from one position to another, in their manufacture require a considerable amount of accurate mac...

A mailer type business form having four parts is produced from two sheets, to define a mailer having top and bottom plies formed from one sheet, and first and second intermediate plies formed from another sheet. The top and first intermediate plies have aligned die cut windows in them, and the second intermediate ply forms a return envelope with the bottom ply. A combination outgoing address for the mailer, and return address for the return envelope, are printed on a portion of the second interm...

A release mechanism for indirectly acting air brakes of a railway vehicle has a valve device which is actuated by the pressure in the main air line and upon actuation lowers the pressure in the control chamber of the brake control valve which connects the brake cylinder to the atmosphere. The valve device is connected to an air tank. A manually operated release valve is provided to actuate the pressure releasing function of the valve device. The valve device has a valve member which is subjected...

Apparatus for the release of railroad air brakes, which consists of a pressure sensitive control valve which supplies air to a piston to bleed the air brake reservoir, and thus release set brakes, together with valving sensitive to the position of the air brakes which controls the air supply to the said pressure sensitive control valve so that said valve is inoperative when brakes are in the released state.

An analog input circuit may include a pair of differential transconductance input stages having input nodes connected in parallel and which are fed the analog input signal. One of the differential transconductance stages may have common mode compatibility toward the supply node at the highest potential, and the other stage may have common mode compatibility toward the supply node at the lowest potential. Furthermore, differential output currents of the transconductance input stages may be summed...

In a cassette for dispensing flexible tubing, the tubing is packed in a tightly layered mass between a tubular core and the vertical wall of a casing. Subsequently a cap is mounted in an expanded portion of the casing. The cap has a vertical part fitting the portion and a flange partially overlapping the pack. The cap is secured against rising by punching tongues out of the portion that engage in a groove in the part. The inner surface of part aligns with surface of casing. The junction beneath ...

A valve has a direct flow passage extending therethrough. A flexible diaphragm (170) is positioned between a main valve seat (156) and an exhaust seat (172). Flow of pressurized air into the valve (110) through the inlet port (142) deflects the diaphragm (170) away from the main seat (156) and seals it against the exhaust seat (172). Higher pressure at the delivery port (144) than the inlet port (142) move the diaphragm (170) away from the exhaust seat (172) and against the main seat (156). A sh...

A polyolefin, such as polyethylene or polypropylene, is modified by grafting onto the polyolefin backbone from 5 weight percent to about 30 weight percent of 2-hydroxyethyl methacrylate. Suitable polyethylene compositions for grafting include ultra high molecular weight polyethylene, high density polyethylene, ultra low density polyethylene, low density polyethylene, linear low density polyethylene and polypropylene.

An image forming apparatus of the present invention includes image carriers arranged side by side in a preselected direction, developing means each for forming a toner image on one of the image carriers, a drive mechanism for driving in the preselected direction a member to which toner images are to be sequentially transferred from the image carriers one above the other, and image transferring devices each for transferring a toner image from one of the image carriers to the above member. At leas...

The present invention concerns automatic fluid brake devices in which the fill and discharge of the brake cylinder or cylinders of the equipment are controlled by a device functioning as a distributing valve in relation to pressure variations in the brake pipe. In the aforementioned automatic braking devices generally used for rail vehicles, and commonly known as distributors, the brake cylinder pressure obtained during the braking process is a function of the pressure in the brake pipe. The pre...