US692619A - Flood-gate dam or weir. - Google Patents

Description

No. 992,6l9. l Patented F994, 1992..

M.cA9sTAN.|EN. FLOOD GATE DAM 0R WEIR.

(Applicacio med sept. 27, 1900.)

No Model.)

Awb/mns.

UNITEDY vSTATES PATENT OFFICE.

MAX OARSTANJEN, OF NUREMBERG, GERMANY, ASSIGNOR TO FIRM OF VEREINIGTE MASOHINENFABRIK AUGSBURG UND MASCHINENBAU- GESELLSCHAFT NRNBERG, A.G., OF NUREMBERG, GERMANY.

FLOOD-GATE DAM OR WEIR.

SPECIFICATION forming part of Letters Patent No. 692,619, dated February 4, 1902.

Application iiled September 27,1900'l Serial. No. 31,292. (No model.)

To all whom t may concern: o

Be it known that LMAX CARSTANJEN, a subject of the German Emperor, residing at Nuremberg, Germany, have invented Improvements in Flood-Gate Dams or Weirs, of which the following is a specification.

In streams or rivers liable to strong flows of ice alluvium and having a considerable head of water the arrangement of movable dams or barriers offers peculiar difficulties, as itis impossible to arrange bearings, hinges, or other mechanical parts in the bed of the river. Roller or spar barriers with frames or supportsca'pable of being rotated, movable flood-gate posts, the lower ends of which must be let into foot-steps fixed in the bed of the river, and other like arrangements are thus rendered useless. The local circumstances do not in most cases allow of the division of the total width of such a barrier or flood-gate into a number of smaller openings, and thus necessitate the use of very large and heavy closing devices, which are correspondingly cumbrous to move. In addition to their own weight other important resistances, as a rule, oppose the movement of these closing-bodies, which resistances in the apparatus at present employed consist of sliding friction or trunnion friction, as well as the friction'of ice and solid bodies on the walls of the closing-body.

This invention has for its object a dam or flood-gate the closing-body of which is movable and so formed that even when of extraordinary dimensions t-he resistances to movement are reduced to a minimum and further. hinges or other mechanical devices on the bed of the river are entirely avoided. The closing device for this object consists of a roller the diameter of which is about equalvto twice the height of the water-levelabove the top of the Weir at the point in which it is opened more particularly for the passage of ice and other solid matters. When the weir is closed,

against'it the friction of ice on the Walls'is entirely obviated.

This improved Weir is shown in the accompanying drawings.

Figure I is a sectional side view; Fig. II, a plan view ot the arrangement with an inclined plane for the Vroller-track, While Fig. III is aside View of the arrangement where the water-level below the Weir is considerably lower than that above the Weir.

A roller a extends over the vwhole width of the watercourse and is constructed, preferably, of strong iron plates, after the mannerof a boiler; but in some circumstances it may be constructed of any other suitable material-for instance, of cast-iron, cast-steel, or the like-having a diameter of almost double the height of vthe water-level b above. the solid Weir-face c and capable of being opened when required for the passage of ice. At the highstpo'int of the Weir-face av beam d is arranged, which eXtends across the entire width of the Weir-flow, on which the lower face 0f .the -rollervrests to form a tight joint along this line.

In order to open the weir, the roller a is rolled away Valong a track e e, which in the present instance is inclined. In order to obtain the rolling movement, the circular rolling-surface f at each end of the roller rests on the rolling-track e, while at the same time a toothed ring g, mounted beside the rollingsurfaces f, engages with a rack bar h, arranged along the rolling-track in order to guide the roller. The roller is consequently forced to 'roll up the inclined track c without slipping when it is caused to rotate. This rotation of the roller is produced in the following manner:

A chain-wheel 't' is mounted on each end of the roller a. beside the toothed ring g, over which chain-wheel a chain 7c is wound, anchored in the ground at both ends. The chain 7a has been led at first downward from the upper place t near the machine-house n, where it is fastened with grappling-irons parallel to the rolling-path e, and is then wound around the left half of the circumference of cylinder a. Thereupon it is guided again obliqnely upward and around the cylinder m, thence obliqnely downward and around the cylinder Z, to be wound around the right halt' of the circumference of cylinder ct. The lower end t of the chain has been iinally fastened with grappling-irons in the solid back of the dam. This chainisalso carried around two pulleys Z and fm, arranged at the ends of the rolling-track, the latter of which pulleys is rotated by a driving apparatus provided with a very strong transmission-gear arranged in an engine-house 1t. Such an engine-house with suitable driving apparatus is arranged on each of the two ends of the Weir, the driving apparatus of both houses being capable of being operated from a motor q, arranged in the center of the watercourse on a crosspicce p, which motor drives a cross-shaft fr, running right across the watercourse to each engine-house. This rotation is, as already stated, converted into a slow one by means of suitable gearing to the chain-pulley m, and from this by the intermediary of the chain 7a to the roller ct, so that the latter is forced to roll up the track e. The roller ct may thus be rolled up the track to the highest position a', corresponding to the highest water-level b', in which position no resistance is opposed to the passage of the water. In order to again close the Weir, the chain is operated in the reverse direction. IVhen the roller has become immersed to a certain depth, the water penetrates into the interior of the roller through openings formed in both ends, and thus forms a ballast which prevents the roller from floating and through which the Water can flow in and out whenever the dam is opened or closed. It then lies firmly in its lowest position on the solid weirface,while by further straining the chain the rolleris firmly pressed against quadrant-shaped washering-surfaces in the side niches. By means of suitable locking devices it may be retained in this position and the strain may then be slackened.

The water runs away from the interior of the roller after the weir is closed, so that there is no danger of its freezing. On the reopening of the sluice in similar manner the water Will again temporarily fill the roller and again run out of same automatically when the roller is raised out of the water.

In the form of construction shown in Fig. III, where the level `sof the Water behind the weir is considerably lower than the waterlevel b above it, the rolling-track c for the roller may run in a horizontal direction, the advantage of which is that when the roller is moved its own weight has not to be overcome, and thus the resistance to the movement is reduced to a minimum.

I declare that what I claim isl. In combination a iood-gate, a Weir, a roller a, a track extending away from the said weir and upon which the roller is adapted to move, and by which itis supported, and means for positively moving the roller along' the track, substantially as described.

2. In combination in a Hood-gate, a wcir, a roller a, a track extending away from the said weir and uponwhich the roller is adapted to move, and by which itis supported, and means for positively moving the roller. along the track, said means consisting of the chain 7textending aronnd a part of the roller having its ends anchored and its intermediate portion passing around rollersland m, substantially as described.

3. In combination, the Weir, a roller, the tracks e extending away from the Weir, and upon which the roller is supported, a rack alongside the track, a gear on the roller meshing with the rack and means for moving the roller along the track, substantially as described.

In witness whereof I have hereunto" set my hand in presence of two witnesses.

MAX CARSTANJEN.

Witnesses:

ANREAs Strien, OscAn BooK.

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