Abstract: Apparatus for injecting thermoplastic material including means to form a tubular stream of plastic with a central stream containing a foaming agent.

Abstract: Stapler having a staple track locked in the base by means of a resilient plastic latch.

Abstract: Chemical distribution system having a pressurized tank for causing flow of chemical to a plurality of appliances and having an apparatus for introducing a chemical into the tank from bulk storage and maintaining the pressure at a constant, predetermined value.

Abstract: Picker stick formed of a carbon fiber reinforced plastic with a hollow center containing a vibration damping substance.

Abstract: Boat attachment having a main body permanently attached to one end of the boat, having a bracket removably mounted on the main body which carries an elongated cylindrical roller, and having means to hold the bracket on the main body.

Abstract: Curvette of generally circular form having apertures adjacent the outer periphery and having a plurality of compartment elements formed of an optically-clear plastic snugly locked in the apertures.

Abstract: New polythiols-polyesters and corresponding polysulphides in the --SH group wherein sulphur is contained in the alcohol residue after the formation of esters. These polyesters are derived from aliphatic polyacids, saturated or not, wherein the molecule contains a minimum of 15 atoms of carbon. They are formulated by the action of a mercapto-alcanol on the corresponding polyacid, in a liquid which gives an azeotropic mixture with water. These products are useful as additives to asphalts, bituminous products, coatings, mastics and cements.

Abstract: A grinding machine in which sparkout grinding is carried out for a period of time that is selected from workpiece to workpiece by a power meter means which terminates grinding when the power consumed by the wheel reaches a predetermined value, which value is varied from new wheel conditions to worn wheel conditions.

Abstract: Vehicle for receiving, transporting and discharging solid materials, which is provided with a swingable bin. The bin is capable of being withdrawn into an upper position which leaves the discharge opening completely free when discharging is to be carried out. The withdrawal is obtained by releasing the pivoting shaft of the bin and engaging a second shaft, situated at the rear of the bin, in bearings provided on the vehicle, in an upper position. This considerably lightens the vehicle, by dispensing with the conventional gate frame. A particularly advantageous use is for bins for the removal of solid domestic and industrial waste material.

Abstract: A stapler having a frame formed in two parts of high density polymer, wherein the major support and guide elements of the stapler are integrally formed with the two parts.

Abstract: Sewer form consisting of two telescoping sheet metal tubes whose outer ends are provided with conical portions adapted to engage pipe openings in a manhole, the form permitting the formation of an invert of concrete.

Abstract: A particle and method for dispersing additives in a thermoplastic resin. The particle consists of a high concentration of additive material, a thermoplastic rubber, a resin, and modifiers. The method involves forming the particle with a high concentration of additive and adding the particle to a mass of thermoplastic resin.

Abstract: Portable office stapler, having a flat box-like configuration with an approximately constant cross-section in the shape of a flattened cake of soap, having mechanical and covering functions, and comprising two parts, including a body containing all of the other moving members and a lid-button pivoted at the front and comprising most of the back for the box-like member, the latter transmitting between said lid-button and an anvil integral with the body all of the forces and reactions required for staple closing. At the front slit is provided for introducing sheets or layers to be stapled with the cooperation thereat of said anvil, a staple-carrying magazine, a feeder, a push-load plate, a hammer, and a staple closing plate. The drive for all of these members is produced by a button acting through a roller on the hammer at a contact location between one pin and the button-pressing zone and between a second pin and the hammer head.

Abstract: Grinding machine having annular dressing wheel whose inner surface is used for dressing.

Abstract: Ratchet wrench having a main body consisting of two body elements formed of stamped metal plate having handle portions that are riveted together and having head portions which are offset from the handle portion so as to lie in spaced, parallel relationship, the head portions supporting a ratchet and a pawl between them.

Abstract: Mount for film elements consisting of two panels having generally matching apertures, the apertures of one being provided with notches to expose the coating of a visually-evident nature provided on the inner surface of the other to assist in the insertion of the film elements.

Abstract: Drive mechanism for a rapier-type loom, including a timing belt to which the rapiers are attached and an operating means, including a dwell device, for reciprocating the belt.

Abstract: Camera shutter having at least two hinged iris leaves, each leaf having a control lever, a push rod joining the control levers, a magnetic actuator operating on the push rod.

Abstract: Hub cap in the form of a cup-like cap having laterally notched fingers extending from the skirt for engagement with the spokes of a wheel and having a transversely-slidable internal locking plate for engagement with a notched axle to assemble axle, cap, and wheel together.

Abstract: Blow-molding apparatus for the fabrication of hollow bodies from thermoplastic material, wherein a pre-cast element positioned on a blow pipe receives its finished shape in a hollow mold by blowing compressed air through the pipe.