Abstract An improved arrangement for holding a stowable ''tween deck in service position. The ''tween deck is moveable between a substantially vertical stored position and a substantially horizontal service position. A guide path is provided at the side of the ship for guiding the ''tween deck for motion between its stored and service positions. The ''tween deck includes a trunnion member extending outwardly into the guide path from that portion of the ''tween deck which is lowermost when the ''tween deck is in its stored position. The improved holding arrangement according to the invention is located at the upper end of the guide path and includes a pocket formed by an enlargement of the guide path at the upper end thereof, a pawl member positioned between the pocket and the guide path. The pawl member pivotally mounted for motion between a first position blocking the pocket to guide the trunnion member in the guide path, and a second position blocking the guide path to guide the trunnion member from the top of the guide path into the pocket. A readjustment arm is coaxially mounted with the pawl member for pivotal movement in position between the pocket and the guide path between a first position in which a portion of the arm extends into the guide path and in which the arm is undisturbed by motion of the trunnion from the upper portion of the guide path to the pocket and a second position in which a portion of the arm extends into the pocket and in which the arm is undistrubed by motion of the trunnion in the guide path. The arrangement also includes means for releasably securing the readjustment arm in the first and second positions, and spring means connected to the readjustment arm and the pawl member for biassing the pawl member to its first position when the arm is in the first position and for biassing the pawl member to the second poisition when the arm is in the second position.
Inventors
👤 T Eide
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-25 22:58
CPC Classifications
B; B63; B63B; B63B25/00; B63B25/18
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
322 words
In a ship having a ''tween deck moveable between a substantially vertical stored position and a substantially horizontal service position, guide means including a substantially vertical guide path located at a side of the ship for guiding said ''tween deck for motion between said stored and service positions, holding means at the upper end of said guide path for supporting said ''tween deck in said service position, and a trunnion member extending outwardly from the end of said ''tween deck which is lowermost when in said stored position extending into said guide path, the improvement wherein said holding means comprises a pocket formed by an enlargement of said guide path at the upper end thereof, a pawl member positioned between said pocket and said guide path and pivotally mounted for motion between a first position blocking said pocket to guide said trunnion member in said guide path, and a second position blocking said guide path to guide said trunnion member from the top of said guide path into said pocket, a readjustment arm coaxially mounted with said pawl member for pivotal movement in position between said pocket and said guide path between a first position in which a portion of said arm extends into said guide path and in which said arm is undisturbed by motion of said trunnion from the upper portion of said guide path to said pocket and a second position in which a portion of said arm extends into said pocket and in which said arm is undisturbed by motion of said trunnion in said guide path, means for releasably securing said readjustment arm in said first and second positions, and spring means connected to said readjustment arm and said pawl member for biassing said pawl member to its said first position when said arm is in said first position and for biassing said pawl member to said second position when said arm is in said second position.
Claim 2
Dependent Claim
322 words
In a ship having a ''tween deck moveable between a substantially vertical stored position and a substantially horizontal service position, guide means including a substantially vertical guide path located at a side of the ship for guiding said ''tween deck for motion between said stored and service positions, holding means at the upper end of said guide path for supporting said ''tween deck in said service position, and a trunnion member extending outwardly from the end of said ''tween deck which is lowermost when in said stored position extending into said guide path, the improvement wherein said holding means comprises a pocket formed by an enlargement of said guide path at the upper end thereof, a pawl member positioned between said pocket and said guide path and pivotally mounted for motion between a first position blocking said pocket to guide said trunnion member in said guide path, and a second position blocking said guide path to guide said trunnion member from the top of said guide path into said pocket, a readjustment arm coaxially mounted with said pawl member for pivotal movement in position between said pocket and said guide path between a first position in which a portion of said arm extends into said guide path and in which said arm is undisturbed by motion of said trunnion from the upper portion of said guide path to said pocket and a second position in which a portion of said arm extends into said pocket and in which said arm is undisturbed by motion of said trunnion in said guide path, means for releasably securing said readjustment arm in said first and second positions, and spring means connected to said readjustment arm and said pawl member for biassing said pawl member to its said first position when said arm is in said first position and for biassing said pawl member to said second position when said arm is in said second position.
Claim 3
Dependent Claim
38 words
An improved ''tween deck arrangement according to claim 1 wherein said releasable securing means comprises a member fixed with respect to said guide path including first and second notches releasably engageable by a cam on said readjustment arm.