US689771A - Sluice-gate for waterways. - Google Patents

Description

Patented Dec. 24, |90I. J'. E. WHITING. SLUICE GATE FORWATEBWAYS.

(Application lgdJune 24, 1901.)

No. 689,77l.

(No Model.)

TH: nomas PETERS eo.. naw-umu.. WASHINGTON. n.12;

f v UNITED STATES PATENT QFFTCE.

JAMES EDWARD WHI'IING, OF. BOMBAY, INDIA.

, lsLLi-ieEeA-ra FOR'WATERWAYS.

i SPECIFICATION forming part of Letters Patent N o. 689,771, dated December 24, 1901.

Y Application tiled J'une24-,1901l Serial No. 65,874. (No model):

To all whom it may concern."

Be it known that I, J AMES EDWARD WHIT- ING, a subject of the King of Great Britain, residing and having my post-office address at general post-pollice, Bombay, India, have invented a certain new and useful Improvement in Sluice-Gates for Waterways, of-which the following is a specification. v

This invention relates to sluice-gates for Waterways; and it consists in an arrangement or combinationof sluice-gates such that the Water-pressures on them nearly but do not quite neutralize each other, so that the resultant excess of pressure is independent of the superficial area of the system and not proportional thereto, but to the difference of gate-surfaces and to the head of Water, and is capable of independent variation. This excess of pressure is utilized to make close joints at one or more of the sluice-gates, and its independentvariability permits of adj ustment suitable for that purpose Without irnposing large frictional resistance to the open# ing and shutting of the gates.

In the annexed drawings, Figure l is a plan View, and Fig. 2 an elevation, showing a pair of gates in which both the gates are held in close contact with their respective frames by the resultant excess ot pressure.

M represents a tower. P P2 are the two inlet-ports, and P3 is the free outlet-port. The inlet-ports are placed opposite to each other, and the gates thereto A and B are parallel and opposite to each other but the gate A is somewhat larger than the gate B andl the inlet-port P larger than P2, so that there will be a resultant -pressure proportional to the head of water and to the difference in area of exposed surfaces of A B tending to press the gates on their frames.

G is one of the guides, through which'the regulating-rod R moves. The flanges of. the frames will guide the gates.

The gates A and B illustrated in the drawings are cast separately, and they are to be attached to a central open frame 0,'Whichis also of cast-iron. n The gates A and B are attached by bolts D and lugs E to the central frame C and can manifestly loe adjusted by filing their meeting surfaces and insertion of packing, so-as to be exactly parallel to one another and to the central lifting-rod R. The

tween it Aand the rest of the frame.

frames H I, against which the gates A B will move, are also of cast-iron of suitable sections.A The frame of the larger gate A Will haveits upper bar 'or lintel H placedsufficiently forward toallow the gate to move be- This bar or lintel H' canA be attached to the softit L of the inlet-port by Lewis bolts J and also loe Aconnected by cast-iron arms H2at each side ofthe frame II. to which it is bolted. The

gate A for this opening has a projecting liange A', which rests on the top ofthe lintel H when the opening is closed,'and the flange will project also sidewise, so as to rest on the arms H2, connectingv t-he lintel H with the gate-frame H. In this way a complete joint Will be effected, since the sides of the'gate A will, as already specified, press against and work on the gate-trame H. The smaller frame I may be of the usual type and will loe xed to the quoins K of the smaller inlet-port. The two frames H I are 'fixed in position exactly parallel to each other and at the approximate distance proposed for the faces of the two gates. When the frames H I are erected, the

gates A B will be fastened to their frame C and adjusted and then let down intoposition and then the masonry tower M built to full height. The larger gate may, ifvdesired, move in its frame like a piston, the joints between its sides and thatrof its` traine` being made as Vclose and true as may be possible with suitable ro'ller orother packing without causing too much friction. In this case there may be no doubt some slight leakage at the sides of the larger gate; but the top and bottom Will close on the projecting lintel and on the loottom of the gateway, which will loe flat. The advantages of this plan are that the adjustment of the two gates will be simplied, for the whole system will be free to move in the direction of the excess pressu re, and the whole of this will be available to press the smaller gate against its frame.

The form and materials to be adopted for .these'sluice-gates and the-arrangements and IOO at each end-or, in other words, making its sill at a lower level and its top or lintel at a higher level than those of the inneror smaller gate.

The regulating apparatus must be sufficiently strong to overcome the upward pressures on the bottoms of the two gates and on the projecting flange of the outer gate, as well as the resistanoes due to friction between the gates and the frames. The weight of the gate will assist closure.

In cases where arrangements are to be made at outlet instead of inlet ports of towers or metal pipes it will be easily understood that the larger gate will be placed on the inside of its frame and the smaller one on the outside or will work within its frame like a piston.

I claiml. In a sluice-gate, the combination, with a tower or casing having two waterways arranged opposite each other, of two slidable gates secured together and controlling the said waterways, one of the said gates having an effective area slightly in excess of that of the other gate,whereby both gates are pressed gently upon their seats by the water, and

means for sliding the said gates connected with them at a point between them and operatin g to slide them transversely of the direction o f the currents of water passing through the said waterways, substantially as set forth.

2. In a sluice-gate, the combination, with a tower or casing, and two gate-frames secured thereto and provided with seats which are arranged opposite to each other and provided with waterways of unequal area; of two slidable gates secured together and controlling the said Waterways, the said gates being arranged upon the same sides of their respective seats and pressed gently upon them simultaneously by the water-pressure, and means for sliding the said gates connected with them at a point between them and operatin g to slide them transverselyof the direction of the currents of water passing through the said waterways, su bstantially as set forth.

In witness whereof I have signed this speciiication in the presence of two witnesses.

JAMES EDWARD WHITING. Witnesses:

EMILY EDITH ADA WIIITING, SHAIK EBRAHIM BABUN.

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