Report for Horseshoe Range West Group Lower Front (white) (Pennsylvania) - 1911

General
District: 4th
Inspector: Thos. J. Rout, Jr., Supt.
Location: On bank of Fort Mifflin Naval Reservation, PA.
Date of Report: 03/12/1911
Latitude: 39° 52' 59"
Longitude: 75° 12' 13"
Premises
Site: Naval Reservation
Date of Reservation:
Date of Deed:
Date of Permission: 11/07/1880
Date of Lease:
Area of the Entire Site: About 8 acres
Area Inclosed: About 6 acres
Character of Soil:
Distance of tower from Nearest High-Water Mark: About 3'
Inclosures to Premises / Type of Fence: Board & wire fence
Wharf or Landing on Premises: None
Road to Land or Wharf Chararacter of and Distance:
Means to Reach Light Station: By boat or trolley from Phila. to Penrose Ferry Bridge, thence walk to station.
Distance to Nearest Road:
Distance to Post Office: Paschallville, 3.5 miles
Distance to Village:
Facilities for Public Conveyance:
Facilities for Private Conveyance:
Means Used for Support of Lantern: Tower
Number of Separate Lights: 1 light on tower, but there are 3 in this group
First Built or Established: 1881
Last Rebuilt, Repaired, or Renovated: 1911
Condition at This Date:
Shape of Tower in Plan:
Form of Tower:
Height from Base to Ventilator Ball:
Height of Focal Plane Above Mean High Water: 40'
Background of Lighthouse as Seen from Sea: Bldgs & trees
Color of Tower: White
Color of Tower/ How Produced: Paint
Tower Connection: Detached
Object of Navigation: Channel & range - general navigation
Building Materials: Structural steel
General Description:
Wall Thickness at Base:
Wall Thickness at Parapet:
Diameter at Base:
Diameter at Parapet:
Kind of Stairway and Steps: Iron ladder
Number of Landings:
Size of Glass: No windows
Number of Windows and Size of Sash: No windows
Number of Doors: None in tower; concrete base has 2 - 2' 8" x 6' 8" doors.
Kind of Foundation and Depth Below Surface:
Character of Soil Surrounding the Lighthouse:
Soil Susceptibility:
Miscellaneous Remarks: Tower is 23' high & rests on concrete base in which gas tanks are housed. Tower is of skeleton steel construction, slatted on channel face.
Lantern and Fixtures
Order of Lantern: Similar to locomotive headlight lantern
Shape of Lantern: Cylindrical
Diameter to Glass: 14"
Diameter in the Clear:
Number of Sides:
Type of Bars: None
Thickness of Bars:
Height Glazed:
Number of Plates in Height:
Number of Plates Each Side:
Thickness of Plates:
Size of Plates:
Number of Storm Panes:
Unglazed Side of Lantern: Only 1 side of lantern is glazed, this faces down range.
What Bearings:
Construction Material Lantern: Metal & glass
Construction Material Roof / Cowl:
Ventilator / Cowl: None
Lightning Spindle: None
Description of Lightning Rod:
Balustrade: Steel platform & railing around lantern.
Lantern Doors: Hung on hinges & provided with latch.
Floor of Lantern: Metal
Watchroom Doors: None
Parapet Diameter:
Illuminating Apparatus
Kind of Apparatus:
Intensity in Candles: 3700
Name of Maker: American Gas Accumulator Co.
Year Made: 1911
Marks and Number: None
Order of Apparatus: Reflector light
Inside Diameter: No central drum
Light Characteristic:
Time of Revolution: Not revolving
Flash Interval:
Duration of Flash:
Arc of Each Fixed Part:
Number of Panels: No lens
Number of Flash Panels:
Arc of Each:
Number of Elements in Central Drum:
Number of Prisms Above Center Drum:
Number of Prisms Below Center Drum:
Does Apparatus Revolve?: False
Is There a Revolving Belt?: False
Revolving Panels:
How Flash is Produced:
Number of Vertical Elements Panel:
Fixed Lens Covered:
Pedestal:
Service Table:
Draft Tube Description:
Revolving Machinery:
Standby and Description:
Chariot Float or Balls:
Chariot Description:
Length of Drop Tube:
Clock Weight:
Length of Winding Time:
Drive During Rewind:
Machinery Protection:
Regulated:
Lens Protection:
How Color is Produced:
Red Sectors Description:
Where Color Attached:
Form of Colored Glass:
Lamp Description:
Type of Illuminant: Acetylene
Number of Spare Lamps:
Number of Spare Burners:
Candle Power: Burner is 30 cp; apparatus is 3700 cp


Compressed Gas
Gas Container: 3- A50 tanks (9" x 6') are in service at 1 time.
Compressed Gas Capacity: 177 cu. ft.
Compressed Gas Charge: 160 lbs
How Supply Renewed: By having tanks recharged.
At What Intervals: About 4 months
Spare Containers: 3


Gas Light
Gas Light Kind: Acetylene gas
Gas Light Number of Burners: 1 burner
Kind of Burner: 3/4 cu ft.
Candlepower Per Burner: 30
Total Candlepower:
Consumption Gas Burner Per Hour: 3/10 cu ft.
Total Consumption Per Hour:
How Gas Obtained: From 4 A-50 AGA tanks


Occulting Light
Characteristic: White 4/10 sec; eclipse 6/10 sec
Time Limit: Any desired characteristic may be obtained.
Eclipse Type: Valve
Size and Amplitude:
Axis Rotation:
Axis Relation:
Screen Revolution:
Screen Number:
Screen Time:
Screen Form:
Screen Mounting:
Screen Order:
Screen Date:
Valve Maker: AGA Co
Valve Pattern: Standard pattern
Reliability: Yes


Parabolic Mirror
Parabolic Opening:
Parabolic Mirror Depth:
Parabolic Focal Length:
Parabolic Material: Apparatus is a Mougin mirror, glass.
Closets and Store Rooms
Tower Closet Use:
Oil House Description: When base was constructed, a compartment was set aside to serve as oil room. It has a hinged door.
Oil House Inside Dimension: About 3' x 10'
Oil House Construction Material: Concrete
Oil House Capacity: 40 cases - 200 gal.
Other (Describe):
Suitability: