Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – And means to apply stress to preform and uniting in stressed...
Patent
1996-10-21
1998-06-16
Mackey, James P.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
And means to apply stress to preform and uniting in stressed...
264228, 425 62, 425182, B28B 2306
Patent
active
057666482
ABSTRACT:
A road transportable concrete railroad long-line tie molding system is described in which a rigid horizontal metal stressing frame is assembled from transportable sub-frame segments. The sub-frame segments are releasably connected in axially aligned end-to-end relation, and include parallel longitudinal reaction members. In a preferred form, the sub-frame segments are convertible from inoperative transport conditions to extended operative conditions. Footings are provided along the stressing frame length to engage the sub-frame segments to releasably mount the sub-frame segments in axial alignment and stabilize the reaction members against lateral deflection during compressive loading. A plurality of conventional gang tie molds having upwardly open elongated mold cavities are releasably received in end-to-end alignment along the framework. A reinforcing wire anchor is provided on the sub-frame at the dead end of the framework and a tensioner is located at the live end of the framework. The tensioner and anchors are adapted to receive and position an array of longitudinal reinforcing wires within the mold cavities. The wires are placed in tension against the reaction members, which react in compression. Both tension and compression forces are isolated from the tie molds. The tensioning forces applied between the tensioner and anchors are distributed about a centroid. The reaction members are positioned in concentricity with the centroid to avoid eccentric loading of the reaction members.
REFERENCES:
patent: 4040775 (1977-08-01), Nordbak
patent: 4051216 (1977-09-01), Bratchell
patent: 4149306 (1979-04-01), Tice
patent: 4421710 (1983-12-01), Borcoman
patent: 4812113 (1989-03-01), Jantzen
"New Mobile Concrete Tie Plant," Aug. 1986, p. 38.
"Twin Mould Method," Costain Concrete Co., Ltd., Dec. 1980.
"Dutch Firm Introduces Portable Precast Plant," Concrete, May 1984, pp. 43 and 54.
Dywidag, Germany, Cycles, published prior to Oct. 1, 1995.
Otto-Verken, "Otto-Verken's other Activities," Sweden, published prior to Oct. 1, 1995.
The Concrete Alternative, "Background," Sweden, published prior to Oct. 1, 1995.
Bureau BBR Ltd., "BBR Prestressed Concrete Railway Sleepers," Switzerland, published prior to Oct. 1, 1995.
Dipl.-Ing Werner Bruckner, Thosti-BBRV, "Design, Manufacture and Use of Thosti-BBRV Prestressed Concrete Sleeper," with insert, published prior to Oct. 1, 1995.
Eriksson Anders L. U.
Firth Derek
Petersen Rick W.
White John G.
CXT Incorporated
Mackey James P.
LandOfFree
Road transportable segmental concrete railroad tie long-line pro does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Road transportable segmental concrete railroad tie long-line pro, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Road transportable segmental concrete railroad tie long-line pro will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1722310