Hook connector

Receiver adapters or connectors. Various forms of receiver adapters are shown in Figs. 11, 56, 26-29. The simplest form. Fig. 11, 56, 26, carries a glass hook for securing it to the condenser by means of a rubber band from the side tube to the hook an improved form, incorporating two ground glass joints is shown in Fig. 11, 56, 27. A useful adapter is illustrated in Fig. 11, 56, 28 when employed at atmospheric pressure, a drying tube may be attached to the side tube, if desired in a distillation under reduced pressure, the side tube is connected to the pump. Fig. 11, 56, 29 depicts a receiver adapter with an additional socket connection. 

A simple way to appreciate the shape of fullerene is to construct a physical model in which rigid planar trivalent nodal connectors represent the atoms and flexible plastic bars (tubes) of circular cross-section represent the bonds. From a mechanical point of view the model may be considered as a polyhedron-like space frame whose equilibrium shape is due to self-stress caused by deformation of bars. We suppose that the bars are equal and straight in the rest position and that they are inclined relative to each other at every node with angle of 120°. The material of the bars is assumed to be perfectly elastic and that Hooke s law is valid. All the external loads and influences are neglected and only self-stress is taken into account. Then we pose the question What is the shape of the model subject to these conditions To answer this question we apply the idea used for coated vesicles by Tarnai Gaspar (1989). 

Reliable series firings can be achieved if these considerations are taken into account. The advantages of series firings are that circuit current is lower than in parallel firing. This means that switches, voltage dividers, reference diodes, etc., can all be at lower current ratings, hence, smaller and probably less expensive. Also electrical cable and other conductors can be smaller, and usually hook-up is simpler and fewer connectors can be used. 

After installing an NIC, you must hook the card up to the network using the cable supplied by your network administrator. You will need to attach this patch cable to the connector on the NIC and to a port in the wall, thus connecting your PC to the rest of the network. 

In cases where the Parr 4740 autoclave is used as the pressure containment device, multiple quartz reaction ampoules can be used in each run. These autoclaves have the advantage that up to eight quartz ampoules can be run at once. In this case, pressurization can be most conveniently accomplished by hooking up the autoclave directly to a new cylinder of inert gas. Most commercial gas suppliers supply gases in cylinders which are pressurized to 150-170 bar and the Parr autoclave can easily contain these pressures. Direct inlet adapters can be purchased from standard compressed gas dealers. Swage type and NPT connectors are suitable for these connections but any tubing must be medium walled copper or steel. 

Snaphook means a connector comprised of a hook-shaped member with a normally closed keeper, or similar arrangement, which may be opened to permit the hook to receive an object and, when released, automatically closes to retain the object. Snaphooks are generally one of two types ... 

A word sometimes used in electronics catalogs, when describing various alternative types of cables for attaching instruments. A hook is an adjustable connector at the end of a wire, often used with oscilloscopes, which can be squeezed by hand. When this is done, a metal barb comes out, and it can be hooked onto a wire that is being tested. Releasing it allows a spring to ensure good contact. 

Are snap-hooks unless the locking type not attached to a dee-ring to which another snap-hook or other connector is already attached ... 

Connectors (Dee-rings and snap-hooks) shall have been proof-tested to 1600 kg and have a minimum tensile strength of 2,250 kg. 

Snap hooks connect the harness to one end of lanyards or lifelines. Effective January 1, 1998, only double-locking snap hooks can be used. Traditional single locking snap hooks cannot be connected to each other because of the possibility of an employee roll-out. A lanyard is a flexible line of rope, wire rope, or strap that has a connector at each end. Lifelines use a flexible line that connects to an anchorage point in the fall arrest system. 

Keyed connectors eliminate the possibility of hooking up a battery to the wrong vehicle or charger. Different plugs and connectors along with color keys can help to assure correct connections. 

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