US1828219A - Lateral packing for weirs - Google Patents

Description

Oct. 20, 1931. T.'BECHER 4 LATERAL PACKING FOR WEIRS Filed Feb. 17, 1928 Fig.1

Inventor) Patented Oct. 20, 1931 THEODOR BECKER, OF GUSTAVSIBURG,

GERMANY, ASSIGNOR T INLASCHINENFABRIK AUGSBURG-N'fi'RNBEBGA. G., 01 NUR-IEIMBERG, BAVARIA, GERMANY, A CORPORA- TION OF GERMANY LATERAL PACKING FOR WEIRS Application filed February 17, 1928, Serial No. 255,068, and in Germany August. 5, 1927.

Y My invention relates to a movable lateral packing for weirs especially roller weirs, said 1. packing being provided to avoid leakage of the weir in case of variation in the dimensions .5] of the gate or roller, which may be due to changes of temperature, or to a deformation of the gate or roller either caused by bending stresses imposed thereon or during the operating motion of the roller or gate on its track. 1: In larger weirs the lateral packing is frequently constructed in such a manner that on either side of the gate or roller body of the weir there is provided a sheet metal plate which is riveted onto the gate or roller body. and directed up stream. This "sheet metal plate furthermore carries a packing beam which is pressed against the outer surface of the wall pillar. Further down, that is towards the floor of the weir, the lateral sheet 90 metal plates become gradually narrower so that the gate or roller in the closed condition of the weir will rest upon the packing beam provided at the floor of the weir.

The width of the lateral packing members comprising said sheet metal plates being downwardly reduced, their, resiliency will also be gradually diminished. While-the water-pressure, therefore, will always be suflicient to press the upper wider and, therefore, more resilient portion against the mar" sonry work of the weir, it will not suflice to press also the lower portion of small resiliency against the masonry work, if this lower portion as is usual is rigidly connected with the closing body, i. e. the gate or roller. Moreover during the operation ofthe weir,, it will not be possible to always keep the gate or roller in the same longitudinal position which had been givento it. during the installationof the weir. Thus, for instance, in case of changes in temperature the longitudinal dimension of the closing body, if made of iron, will be changed. In case the longitudinal dimension of said closing body is inor less permanent set. Consequently, if the creased, the packing plates of sheet metal will I the downwardly temperature then is lowered and the gate contracts, the water pressure may not sufiic'e to overcome the set or deformation in the plate and the latter may not be flexed sufliciently in an outward direction to eifect a seal between the beam and the masonry. At this place, therefore,

work. Also in case of large dimensional changes of the closing body which changes may be due to bending stresses occurring in the direction of especially with closing bodies of great length and small height, which may yield at their middle portion in the direction of the flow-of the watercourse, the relatively narrow lower portions of the packing plates may be dethere will be a gap intermediate the packing beam and the masonry the floor of the watercourse I flected inwardly to such an extent as to prevent the water pressure from holding the lower portion of the beam in engagement with the masonry. Furthermore it is known that gate sluices as well as roller sluices must be given a certain play in their lateral guides and that they partake of more or less lateral movement when being moved vertically. In this case the lateral forces may be so great that the laterally provided sheet metal plate which serves as a packing maybe bent inwards at its under part on the side towards which the motion takes place, while on the other side said plate will be moved away from the lateral masonry work, the water-pressure being not sufiicient to prevent such motion. since these lateral motions take place towards both sides of the weir, this maycause also a deformation of the gate or roller so that a gap will be formed on either end thereof.

The present invention has for its ob]ect to do away with these disadvantages. Essentially this I accomplish by connecting the lateral sheet metal plates which serve as a packing on the lower less resilient portion of the gate or roller in a non-rigid way, so

plates can move on an arched support. In that case, the packing is efi'ected by a packing strip of leather orthe like, fastened both to the closing body and the sheet metal plate. This construction, however, is not an eflicient packing for weirs of large width, as it is not always possible to prevent the formation of air spaces under the action of strong lateral pressures, the said packing strip becoming more or less stretched and there being a limit to the deviation of the sheet metal plates. Consequently, there may occur a space be: tween the closing body and the masonry.

The accompanying drawings show an embodiment of a weir made according to my invention. Fig. 1 is a cross section through the roller body of a weir showing the lateral packing in elevation, Figs. 2 and 3 drawn to a larger scale are sections through the lateral packing and through the fastening means along lines AA and BB of Fig. 1 respectively. Fig. 4 is a section along line DD in Fig. 3.

As shown in the drawings, the roller body a is provided as usual with the retaining plate I) which carries the packing beam 0. The movable fastening means for the lateral sheet-metal packing plates 45 commence about at the height of said plate .7) at the broken line C shown in Fig. 1, however, said fastening means may also extend in vertical direction over the entire lateral packing.

For this purpose the angle irons e of the lateral packing plates d carrying the lateral packing beams instead of being riveted onto the plate 6 or onto the wall of the roller body, as has been done heretofore, are connected therewith by means of the screw bolts 7, which may slide within the slots 9 or the plate I) of the wall of the roller body. As shown in Fig. 3, the lateral edges of plate 5 engage in grooves n in the packing beams 70 so as to permit lateral movement of the packing beams I". and their supporting plates (1.

The packing between the angle iron 6 and the plate b or the roller body consists of an intermediate layer h of yielding material it, such as rubber or leather, which is kept in proper position by means of a cover plate i.

In order to prevent a gap from being formed between the packing beam k of the lateral packing device and the packing beam 0, an angle iron l is secured to the packing beam k, as shown in Fig. 3, by bolts 7* where the beams is and c abut against each other said angle iron Z being adapted to slide within a groove m provided in the packing beam 0. A tight ]oint will thus always be maintained between the packing beams 70 and 0, while permitting them to move away from each other.

The herein described packing may also be used in connection with sluice-gates and the like in which case the packing-will be suit,- ably modlfied to meet the special requirementS.

I claim:

1. In a weir construction, in combination with the closing member and a packing beam for the bottom of the weir carried by said closing member, a sheet-metal plate extend-- ing upstream from said closing member, a packing beam carried by said sheet-metal plate, and means connecting said sheet-metal plate to said closing member so as to permlt lateral movement of said sheet-metal plate and the beam carried thereby with respect to the closing member under the influence of the water pressure and an angle-piece secured to said packing beam and adapted to slide in grooves provided in said bottom packing beam.

2. A roller weir comprising a roller body, a sheet metal damming shield extending downwardly from the upstream side of the roller body, a sheet metal plate extending laterally with respect to and upstream from the roller body and shield, the upper portion of said plate'being relatively wlde and flexible and attached rigidly at its downstream edge to the roller body, said plate being of decreasing width from the said upper portion toward its lower end, the lower portion of said plate being substantially inflexible, a packing beam mounted along the upstream edge of said plate, and a connection between the lower portion of said plate and said damming shield permitting lateral sliding movement of said lower plate portion relative to said shield under the influence of the water pressure.

3. A roller wircomprising a roller body, a sheet metal damming shield extending downwardly from the upstream side of the roller body, a sheet metal plate extending laterally with respect to and upstream from the roller bod and shield, the upper portion of said plate being relatively wide and flexible and attached rigidly at its downstream edge to the roller body, said plate being of decreasing width from the said upper portion toward its lower end, the lower portion of said plate being substantially inflexible, a packing beam mounted along the upstream edge of said plate, a pin and slot connection between the lower portion of said plate and said damming shield permitting lateral sliding movement of said lower plate portion relative .to said shield under the influence of the water pressure, andmeans sealing said connection against the passage of water through the slot thereof.

4. In a weir construction, a damming member, a sheet metal member extending laterally from said damming member, a packing beam carried by said sheet metal member, a bolt connecting said members together, one of said members having a slot-through which said bolt extends whereby the sheet metal member is permitted to slide relative to the damming member under the influence of the water pressure thereagainst, and a sealin member carried by the damming member an overlying the slot to prevent the passage of water therethrough.

5. In a weir construction, a damming memher, a, sheefmetal member extending laterally from said damming member, a packing beam carried by said sheet metal member, a bolt connecting said members together, one of said members having a slot through which said bolt extends whereby the sheet metal,

member is permitted to slide relative to the damming member under the influence of the water pressure thereagainst,,and means to seal said slot against passage of water therethrough comprising a gasket member overlying the slot of the slotted member, and a retaining plate for said gasket member overlyin the latter and fastened to the damming 99 mem uer.

In testimony whereof I aflix-m signature. THEQDOR BCHER.

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