Hoisting apparatus

Siding panels will be securely fastened before releasing the hoisting apparatus. ... 

One control for hoisting apparatus is proper semp. This can include placement on a level site, staying away from power... 

Another control is lift planning. That helps ensure a safe load and lift. In some cases, there is a need to complete precise load calculations that account for many factors. Hoisting apparatus should have load limits clearly marked. The ratings assume a static load. Jerked loads or loads dropped some distance create dynamic conditions. They place inertial loads on the rigging and structure and may overload them. Cranes, for example, should have a load chart affixed to the operator s cab and an operator s manual in the cab. The operator must know the weight of the load. That and other information allow the operator to use the load chart and ensure the capacity of the equipment is not exceeded. 

There are many design features that can reduce risks in the use of hoisting apparatus. Not all safety features in cranes are fail-safe devices. Each device has limitations. This discussion covers a few examples. 

Hebe-vorrichtung, /. lifting apparatus lever, -werk, -zeug, n. lifting apparatus, hoisting device, gin, whim, screw jack, etc. 

Fig. 246. Mixing house for nitrocellulose powder. Each day s output is hoisted to the upper floor where it passes through a mixing apparatus to form uniform batches of 10-50 tons (Bofors Nobelkrut Factory).

Fig. 21. Production diagram of silicon tetrachloride by ferrosilicon chlorination 1 - jaw crasher 2 - bucket elevator 3 - grate 4 - shaft hoist 5 -bin 6 - chlorinating furnace 7 - condenser 8 - scrubber 9 - boiler 10, 14 - condensers 11 - distillation tank 12 - rectification tower 13 - refluxer 15 -collector 16- apparatus for the destruction of solid chlorides 17- hydrolysis chamber 18- absorption column.

In one sense, the airless enclosed vapor degreaser is the perfect open-top vapor degreaser because (1) no tall freeboard is required to contain solvent vapors, allowing the apparatus be compact and easily located in a work area (2) a fresh supply of pristine distilled solvent is always available for cleaning and rinsing so there is no space consumed by a second liquid sump, and no outcome where the parts are rinsed before they are washed (Chapter 1.14) and (3) no programmable hoist is required as the solvent is... 

What Inspect All control mechanisms for adjustment, wear, and lubrication All chords and lacing Tension in guys Plumb of the mast Air or hydraulic systems for deterioration or leakage Hooks for deformation or cracks Electrical apparatus for malfunctioning and signs of excessive deterioration, dirt, and moisture accumulation Rope reeving for noncompliance with the manufacturer s recommendations Hoist brakes, clutches, and operating levers for proper function and All ropes for all types of deterioration. 

---