[PRCo] Brakes on Pittsburgh PCCs

[Fred Schneider]

I found a rather unique document in my files that lists brake  
apparatus on Pittsburgh PCCs as of 6 December 1955.   It is copied in  
its entirety below.
Jim Holland and Boris Cefer will have a field day!!!

BCC to Hamley, Wells, King, Skrbin,Lybarger,  and Orient.  Yins may  
want to file this in the shop for the day when you have to work on  
1138 or 14whatever or 1799 ex 1613 or whatever it was.   Judging from  
this, our 1400 is a stock 1400 with B2 trucks and more or less  
regular braking but I notice that a lot of the 1400s were rewired for  
EDB.
____________________________________________________________________

                                                                         
                                            12-6-55
Cars with Special Equipment, Types of Brake Valves and Lock Out Relays
on P. C. C. Cars

M-11       1500 type trucks, 1000 type Westinghouse Motors.

1230       1500 type trucks, 1500 type Westinghouse Motors.   Exended  
dynamic braking
                  and motor mounted drum brakes.   Wiring changes see  
Drwg. No. 7D-7490.

1224 to 1274 incl.   Extended dynamic braking and Westingthouse Air  
Brake Co., pinion
                  mounted drum brakes.   (except car 1230).   For  
wiring changes see Drwg. 77-7720
                  except cars 1225 and 1250   see Drwg. 7D-7445.

1278        1600 type trucks, 1600 type G. E motors.  Extended  
dynamic braking to 2 M/hr.

1401        Accelerator cam switch sequence is different than other  
1400 cars.  Wiring changes -
                  see Dwrg. 7D - 7199.

1410        Westinghouse Air Brake Co., pinion mounted drum brakes.    
Extended dynamic
                  braking.   For wiring changes see Drwg. No. 7B-7453.

1429        Westinghouse Air Brake Co., pinion mounted drum brakes.    
Extended dynamic
                   braking.

1430         Westinghouse Air Brake Co., pinion mounted drum  
brakes.   Extended dynamic
                   braking.

1431         1400 Type trucks with 1600 type Westinghouse motors.   
Clark Equipment Co.
                   motor mounted drum brakes and extended dynamic  
braking.

1444         Westinghouse Air Brake Co., pinion mounted drum  
brakes.   Extended dynamic
                   braking.

1445         Westinghouse Air Brake Co., pinion mounted drum  
brakes.   Extended dynamic
                   braking.

1446         Westinghouse Air Brake Co., pinion mounted drum  
brakes.   Extended dynamic
                   braking.   For wiring changes see Drwg. No. 7D-7386.

1447        1600 type trucks with Westinghouse motors.    Extended  
dymamic braking and
                   Clark Equipment Co., motor mounted drum brakes.    
For wiring changes see
                   Drwg 7Dj-7318

1475-1499   Increase speed of MG set from 1700 to 2200 RPM., See  
Drwg. 7A-8059.

1480         W. A. B. Co., pinion mounted drum brakes.  Extended  
dynamic braking.
                   Increased speed of MG set from 1700 to 2200 RPM.

1483        Extended dynamic braking and wiring changes. - see Drwg.  
No. 7D- 7064.
                  Increased speed of MG set from 1700 to 2200 RPM.    
Motor Generator
                  control connection diagram, see Drwg. 7B-7724.    
1600 Clark trucks, 1600
                  GE motors and Clark Equipment Company motor mounted  
drum brakes.

1484       Westinghouse Air Brake Co., pinion mounted drum brakes.    
Extended
                 dynamic braking and increased speed of MG set from  
17600 to 2200 RPM.

1485       Westinghouse Air Brake Co., pinion mounted drum brakes.    
Extended
                 dynamic  and increased speed of MG set from 17600 to  
2200 RPM.


                                                                      
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1500       Clark Motor Mounted 1600 type.  Extended Dynamic Braking.

1501       Westinghouse Air Brake Co., pinion mounted drum brakes,  
1400 type
                 Westinghouse motors, Extended Dynamic Braking.

1502       Westinghouse Air Brake Co., pinion mounted drum brakes,  
1400 type
                 Westinghouse motors, Extended Dynamic Braking.

1503       Westinghouse Air Brake Co., pinion mounted drum brakes,  
1400 type
                 Westinghouse motors, Extended Dynamic Braking.

1504       1600 type trucks, 1600 type Westinghouse motors.   Extended
                  dynamic braking and Clark motor mounted drum brakes.

1505       1600 type trucks, 1600 type Westinghouse motors.   Extended
                  dynamic braking and Clark motor mounted drum brakes.

1550 to 1564 incl.  Increase speed of MG set from 1700 to 2200 RPM.   
See drwg.
                 7A-8059,

1615 to 1619 incl., 1645-46 and 47 have St. Louis B-3 trucks.  W. A.  
B. motor mounted drum brakes.
(Note 1648 may have also be so equipped but it was lost in the Oct.  
1955 Home-
wood fire.)

1630       Electric controlled ventilating system.   See Drwg. No.  
7B-7799.

1683.      Modified wiring - see Drwg. No. 7D-7578.

                  Brake Valves - W.A.Brake Co.
R-8    on  1000-1100-1400 and 1500 series PCC cars
R-10 on 1200
R-12 on 1600 except 1615-19-17-18-19-45-46 and 47.
Modified R12 on 1615,16-17-18-19-45-46 and 47 (see Drwg. 7B-7654)

                  Lock Out Magnet Valve - G. E. Corp.
                     (Non Extended Dynamic Braking)
Car Nos.
1000-1100 (West & GE)                         17 MV 15 A1
1200  (West. & GE)                                  17 MV 22 A5
1400  (West  & GE)                                  17 MV 15 A2
1500  (West & GE)                                   17 MV 15 C6

                  Lock Out Magnetgnet Valve - G. E. Corp.
                    ( Extended Dynamic Brake Cars)
Car Series:
1200, 1400, 1500, 1600 (West, GE)     17 MV 15 C11
Except cars 1615, 16, 17, 18, 19, 46 and 17   17 MV 22 A

                 Lock Out Relay - Westinghouse Corp.
Car Series
1700 (Westinghouse only)                         URA-12

(S) A. J. Marshall                      (S) Jos. J. Naegelen

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