- Wicket Girders and Machinery of Emergency Dam, Gatun, Panama Canal
- Physical Description:
- Angrick, Bill ( donor )
- Keystone View Company
- Place of Publication:
- Meadville, PA
- Copyright Date:
- Subjects / Keywords:
- Dams ( fast )
Girders ( fast )
Machinery ( fast )
Engineering ( fast )
- Spatial Coverage:
- Panama -- Central America -- Panama Canal Zone
- Man standing and viewing the girders and machinery of an emergency dam at Gatun in the Panama Canal.
- Scope and Content:
- B. L. Singley founded The Keystone View Company in 1892 in Meadville, Pennsylvania. The company quickly became the world's largest view company, having at least 250,000 negatives (of which some 50,000 were available as numbered views) by the 1930s. These images were meant to bring international experiences into the palm of the average person's hand, to be revisted in private or during social gatherings. It has been said that the ability of the stereograph to bring vicarious experiences to faraway people makes this medium parallel to the internet or television today. The Keystone View Company also focused on the educational value of their products, employing teams of people to write explanatory texts that were printed on the backs of the stereograph cards. This text, along with the imagery, presents the dominant vision of American ideals and interests during the late nineteenth and early twentieth centuries.
Source 1: http://www.oac.cdlib.org/findaid/ark:/13030/ft1q2n999m/
Source 2: http://www.yellowstonestereoviews.com/publishers/keystone.html
- Gifted on behalf of William P. and Barbara L. Angrick
- Source Institution:
- University of Florida
- Holding Location:
- Panama Canal Museum Collection at the University of Florida
- Rights Management:
- Public Domain Presumed (e.g. expiry of copyright term): This item is presumed to be in the public domain. The University of Florida George A. Smathers Libraries respect the intellectual property rights of others and do not claim any copyright interest in this item. Users of this work have responsibility for determining copyright status prior to reusing, publishing or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
- Resource Identifier:
- accession number - 2013.2.123
- System ID:
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21730-Wicket Girders and Machinery of Emergency Dam, Gatun, Panama Canal.
The wicket girders of the emergency dam, 'vessel fails to stop before entering the lock,
described in views 21726, 21727, 21728, can the chain will be stretched from wall to
be seen here to great advantage. At the wall. W-hen the vessel comes in contact
rear end are seen the gates to be run down with it, the chain will be let out automat-
along the girders when the latter are p't ically at its ends, exerting a resistance in-
in a vertical position along the width of the ci casing as its length increases. A ten thou-
canal. and-ton vessel running four miles per hour
It is estimated that, in case of damage to can be I opped within 73 feet. In case the
the gates by the ramming of a ship, the chain breaks and fails to stop the vessel
water would flow with a velocity of j2 f-ct and the vessel rams the first gate, a second
per second and a discharge of O0,000 cubic gate will be put in operation. If the vessel
feet per second, constituting a force suffi- breaks thru the chain and the two gates,
cient to tear up the floor of the lock. To the emergency dam can then be used to
prevent ramming of the gates by a vessel, check the flow of water until repairs a. r
a second protective device has been in- made.
stalled, the protective chain.T In cae the
.Copyright 19g3, by The Keystone View Company.