ALTO CTC machine right

Union Switch & Signal (US&S) was a primary supplier of control systems to the Pennsylvania Railroad. Their compact, desktop series of CTC machines were labeled the 500 series. What follows is a discussion of what is seen on these machines and how they differed from location to location.

Our first subject is the machine that was installed in ALTO tower (Altoona) to remotely control WORKS, ROSE, HOMER, and ANTIS. It features 30 vertical spaces. Above is the right half of the machine.

 HOParagon3BrassHybridPRRS2Turbine3of16

This table cross references Pennsy steam locomotives by class, type, sub class, sub class designator, year of introduction, and availability of HO models.

Eventually, clicking on minor class number will link to a class-specific page which will include prototype builder data, specifications, unit rosters, and unit photos.

Models in bold are in my personal collection. 

Corrections and additions to this page are welcome.

 56302

INTERIOR PAINT

Buff from c. 1916 until 1960, then light green (except N8's were Buff and Cream until 1960 -- then light green).

EXTERIOR PAINT

FEBRUARY 20, 1914

"Date" on tracing for the new all-steel N5 cabins. "Issued" one month later (3/20/1914), "Made Standard" (12/30/1915). Although not present on tracing (may have been changed) original color may have been bright red (this assumption is made because of the following item added to tracing 7/9/1915).

Centralia Car Shops products are distributed through InterMountain Railway Company.

Part NumberDescription/PhotoComment
InterMountain
HO Scale #CCS4530
P85b Coach, PENNSYLVANIA Letterboard
INTER CCS4530
Correct.
InterMountain
HO Scale #CCS4531
P85b Coach, Keystone Livery
INTER CCS4531
Correct.

 AMB 141 2 09543.1504129027

Station Location HO Scale Model  
Centre Hall, Pa. Branchline centre hall
New Freedom, Pa. American Model Builders #AMB-141  newfreedom
North Philadelphia, Pa. DESIGNDYNE on Shapeways  
Perryville, Md. DESIGNDYNE on Shapeways perryville
Spring City, Pa. Scientific Models #60482 spring city
Wilmington, De. Trainstuff (defunct)
DESIGNDYNE on Shapeways
 

 60388ab9 58ee 4d72 9e5a 53e3bd3f43cb

The paint scheme on the Pennsy's passenger diesels changed over time. Bob Johnson, Chairman of the PRRT&HS Archive Committee, provided the following summary from documents found within the archives of the PRRT&HS:

Before 8-11-1952 - Dark Green with Gold Leaf lettering and striping. Five stripes. (photo above)

10059 75948 full 1

From a Westerfield kit...

HISTORY

The X23 camp cars were created in the early 1940's. Holes were cut in each side for four standard camp car windows. This required the removal of the horizontal ribs where the windows would be placed. Unlike the X23B revision which unbolted these ribs, the camp car conversion merely cut them off, leaving a visible flange. Full grab irons were bolted to the door and a large bar-stock step placed underneath it. The end braces were cut for the placement of a standard camp car door. Grabs were bolted to the jams and the end grabs revised. A standard platform that could be hinged up when not in use was bolted to the end sill.

Part NumberDescription/PhotoComment
HO Scale #_____ 1920s Heavyweights: Duplex Sleeper Correct.

Cars Eventide and Nocturneonly.
HO Scale #_____ 1930s Streamliners: RPO
rivarossi30combine
Correct.

Class BM70nb.
HO Scale #_____ 1930s Streamliners: 12-5 Duplex Sleeper Correct.

8020-8036 Brook-Series.
HO Scale #_____ 1930s Streamliners: ACF 10-6 Roomette Sleeper Correct.

Rapids-Series 8339-8342, 8444-8446.
River-Series.
HO Scale #_____ 1930s Streamliners: Pullman-Standard Observation Correct.

View-Series 8419-8420.
HO Scale All Others Incorrect.

299x132 2D F8

 

Interpretation of Truck Classification
SymbolRefers to
First Number of axles per truck
Second A.A.R. Class letter for journal dia. only (see below)
Third Dash-for standard A.A.R. axle
number-for numerical deviation from A.A.R. standard
Fourth Service of truck. F=Freight, P=Passenger, T=Tender
Fifth Consecutive design of truck for class
Sixth Modification to truck design
A.A.R. ClassABCDEF
Journal size (in.) 3-3/4x7 4-1/4x8 5x9 5-1/2x10 6x11 6-1/2x12
Capy. per axle 15000 24000 32000 40000 50000 60000

 

 

 ES6 8566

This table cross references Pennsy diesel classes with manufacturer model numbers and first year of use on the PRR system. Table is organized by class prefix and number. 

mo tower

The following table lists HO scale models of Pennsylvania Railroad towers that have been produced. Not all models indicated are readily available.

Subcategories

The Track Segment series documents track segments as indicated in the CT1000 of 1945 in conjunction with the Employee Timetables of 1954. Where available, locations indicated may link to a corresponding On Location series article for more detailed information.

The On Location series takes a deep dive into a Pennsylvania Railroad location as indicated within the CT1000 - List of Stations and Sidings.

The Interchange series contains articles about railroads that interchanged with the Pennsy, including fleet statistics and paint schemes with era-appropriateness guidance.