A sheet feeder comprises a pair of guide rails (4) one at either side of the feeder and a pair of feed boards (1,2) each having at either side thereof a pair of vertically aligned rollers (7 and 8) and a third roller (9) retractable by means of a lever (10) to allow the roller (9) to pass through a notch (4b) in a flange (4a) of the feed board guide rail (4). The feed board (1) is lifted by means ...

APPARATUS FOR ASSEMBLING STORAGE BATTERY PLATES AND SEPARATORS A machine for forming elements for storage batteries consisting of alternating layers of positive and negative plates and separators. A plurality of homogeneous feed stacks of negative and positive battery plates and separators are supported on a loading platform located above a moving conveyor. Each individual feed stack is supporte...

An electrical system for controlling the number of positive and negative battery plates contained in a battery element produced by a conventional stacking apparatus. The system includes a detector coupled to a first counter for determining the number of cycles of the apparatus and for activating a dispensing apparatus to provide an additional negative battery plate on the battery element. A second...

Electromagnetic Fuel Injector Having Improved Response Rate An electromagnetically operated fuel injector includes a disk-type armature and a ball-type valve joined to the armature. The response characteristics and speed of the injector's ball-valve are improved by modifying the surface structure of the valve ball to reduce its mass. Preferably a plurality of plunge-ground "flats" are formed on th...

An apparatus for alternately stacking finite numbers of n positive battery plates and n +l negative battery plates wherein a neqative battery plate is provided at both the top and bottom ends of the stack. The apparatus includes a moving conveyor belt on which the positive plates are deposited having a spacing interval greater than the length of two negative plates. negative plate is dropped onto ...

Safety ski binding for use in both downhill and cross-country skiing. A conventional 3-pin 75 mm. toe binding is mounted on a front base plate which is rotatable during downhill skiing, but is locked against rotation for cross-country skiing. The rear binding assembly employs a reversed Cubco toe binding used as a heel binding, which is locked to a heel latch assembly during downhill skiing, the h...

A microprocessor-based burner control apparatus includes an input stage adapted for controllably generating an input signal which is repetitively transitional between a first logic state and a second logic state. A synchronously controlled output stage includes a capacitor, a rectified source of alternating voltage and a microprocessor-switched transistor for controllably charging the capacitor du...

A porous aromatic imide polymer membrane usable as a gas or liquid separator or concentrator is prepared by a process comprising the steps of: (1) dissolving 3 to 30% by weight of an aromatic imide polymer which comprises at least 80 molar % of a recurring unit selected from those of the formulae (I) and (II): (I) and (II) wherein R represents a divalent aromatic or heteroc...

Process for treating liquid waste compositions which contain copper ions and a complexing agent for the copper which includes reducing the concentration of copper ions in the waste composition to less than about 8 ppm and contacting the composition with H2O2; and then contacting the waste composition with an ozone-containing gas and irradiating with ultraviolet light.