File:The street railway review (1891) (14575034617).jpg

Identifier: streetrailwayrev14amer (find matches)
Title: The street railway review
Year: 1891 (1890s)
Authors: American Street Railway Association Street Railway Accountants' Association of America American Railway, Mechanical, and Electrical Association
Subjects: Street-railroads
Publisher: Chicago : Street Railway Review Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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lower has a vertical travel of 4 ft. 9 in., so that the floor of theplatform is at a height of 16 ft. above the track level when it is inits highest position. The clearance height above the rail when thetower is lowered is 12 ft. 3 in. The working platform is 12 ft. 7 in. long .x 4 ft. 6 in. wide, andwhen swung out extends 10 ft. 3 in. from the center line of track.Its construction is light and strong, consisting of three 4-in. x ij^-in.longitudinal pieces with cross pieces of the same size at the endsand a J^-in. truss rod on each side resting on a 12-in. king-post. Railings 2 ft. high, hinged to fold down when not in use, areprovided on the sides. Eight small rollers on the bottom of theplatform run on a fifth wheel of 2V2 x J/j-in. steel on top of the towerand take the weight, while a center pin prevents lateral displace-ment and a stout clamp on a timber placed transversely on top of the i 13 iiit5 1 r PI I, ■ ITS rA?/*P ¥^0( — - 33i;^ • 1 1 • I i ^A TSTS^ ™ te \\ ;_ il
Text Appearing After Image:
u- ~tn-- ELBVATION OF IFRAMINQ OF BROOKLYN HKIOHTS TOWER CAR. lower, a valuable feature seldom, if ever, found in tower cars.Strength, however, is not sacrificed to gain this advantage as thechannels hold the tower legs securely against transverse motionand knee braces between the lower caps and legs prevent racking.Four timbers 4 x 6 in. framed together, rest on the lower legs andare knee-braced to them in all directions. This square of limbersfupports at eight points the swivelling platform and a forging atthe intersection of two lighter cross timljers holds the center pin.The tower is hoisted by hand from the outside of the car, using floor at the rear end grips the fifth wheel tightly and prevents tilt-ing or accidental rotation. No mechanical means are provided forrotating the platform as one man can move it easily by hand. Thesecars, which have been in successful operation for a few months weredesigned jointly by the line and mechanical departnienis of theBrooklyn Heights Railro

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