. Brake tests; a report of a series of road tests of brakes on passenger equipment cars made at Absecon, New Jersey, in 1913 . pneumatically theengineer has available for use in any emergency that may arise a quickacting and fully effective emergency brake, no matter what manipu-lation he may have made previously. The additional safety factorinsured by this means as compared with the absence of any such safetyfactor with the PM equipment is proportional to the difference in thestopping distance already discussed. (Par. 186.) Emergency Equipment. 189. Fig. 53 shows characteristic
. Brake tests; a report of a series of road tests of brakes on passenger equipment cars made at Absecon, New Jersey, in 1913 . pneumatically theengineer has available for use in any emergency that may arise a quickacting and fully effective emergency brake, no matter what manipu-lation he may have made previously. The additional safety factorinsured by this means as compared with the absence of any such safetyfactor with the PM equipment is proportional to the difference in thestopping distance already discussed. (Par. 186.) Emergency Equipment. 189. Fig. 53 shows characteristic brake cylinder indicator cards forPM equipment emergency applications. The rate of rise of brakecylinder pressure is slightly faster and the maximum pressure obtainedslightly higher than would ordinarily be the case on account of thelarger size of auxiliary reservoirs used. 190. The characteristic blow-down action of the high-speedreducing valve is clearly shown by the shape of the curves. The cyl-inder pressiu-e is reduced from an average of about 78 pounds at thebeginning to nearly 60 pounds at the end of the stop. 86. Fig. 51. BRAKE CYLINDER PRESSURE, UC ELECTRO-PNEUMATIC EQUIPMENT. An emergency application following a full service application is shown on this diagram. The uniformity of action due to the electric control is apparent 87
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