US207365A - Improvement in stop-valves - Google Patents

Description

APatrierrr OFFICE.

JAMES OTIS MORSE, OE ENGLEWOOD, NEW JERSEY.

IM PROVEM ET IN STOP-VALVES.

i" Specification forming part of Letters Patent No. 207,365, A December 31, 1877.

To all whom t may concern i Beit known thatl, JAMES Oris MORSE, of

Englewood, in the county of Essex and State of New Jersey, have made an invention of certain new and usefulmprovements in Stop- Gatesor Stop-Valves and that the following is a full, clear, and exact description and specication of the same. l

This invention relates to that class of stopgates or stop-valves generally known as throughway or straightway gates, in which the water-way extends in a straightline directly through the gateway, and in which the water-way is closed by means of a gate or valve constructed to move crosswise` of the water-way. So far as my knowledge extends all v such stop-gates have hitherto been constructed with the ease composed of two parts or pieces, which are secured together by bolts, so that the case may be opened to permit the valve or gate, the valve or gate seat, and other parts to be introduced into thecase, the common construction being the division of the ease into two parts crosswiseof the direction of liftof the valve or gate, so that the upper part constitutes what is commonly known as a removable bonnet. y

The principal objects of. the invention which constitutes the subject-matter of this application are to obviate the above defect of preceding stop-gates; and to these ends the invention consists of certain combinations of mechanical devices, which are set forth at the close of this specification. v

In order that they may be fully understood,

I have represented in the accompanying drawing, and willproceed to describe, a stop-gate embodying my improvements in thebest mode in which I have embodied them up to the prescnt date.

Figure 1 of said drawing represents `a central longitudinal section of the stop-gate. Fig.

2 represents a transverse section of the same.` Fig. 3 represents a horizontal section of the.

same. Fig. 4 represents the gate orvalve of the sam'eremoved fromthe case.` v 1 V The case A of thestop-gate represented in the said 'drawings `is east in one piece,` and contains the valve-seat B, the movable gate or valve O, the mechanism for opening and shut- -ting the same, and the appliances for making dated August 27', 1878 application iled the joint of the valve with its seat tight when the valve is shut. `In order that the stop-gate may always be in working condition, the valveseat B and the gate-face d should be of incorrodible metal, and in the present example they are made of brass. 4

The valve-seat B is tubular in form, and is v 4screwed into one of vtleenozzles f of thecase, this nozzle being tapped from its exterior for that purpose, 'and the screw-thread being followed Ly an enlargement of the bore of the nozzle, so that a narrow rim, e, is' formed, against which a corresponding shoulder .of the valve-seat is screwed up solidly.`

The gate or valve Gis made of two partsviz: the disk or face d and the disk-carrier gthe former being secured to the disk-carrier g by screws. In orderv that 'such disk may be readily introduced into the case A, the nozzle h of the case (back of the valve) is made of sufticient size'to admitthe disk, thus obviat- ,ing the necessity of making they body of the case of two parts. l

In order that the gate or valve may be raised, the screw-spindle I is provided with reversed threads j lc. The screw-thread j at the upper part'of the screw-spindle is righthanded, and' is screwed into a xed nut, m, at the head of the valve-case. The screw-thread la at the lower part ofthe screw-spindle is lefthanded, and screws into a nut, ZK, inserted in a socket inthe disk-carrier. Hence, when the screw-spindle I is turned in one direction thel valve is raised by the simultaneous action of the two screw-threads, the right-hand screwthread ,raisin g the screw-spindle and valve,

and the-left-hand screw-thread raising the valve additionally upon the screw-spindle,"

so that, if the reversed screw-threads are of the samepitch,the valve is raised' twice as far Aby the same angular Vmovement of the valve-spindle as it would be with either of the old modes of construction. On the other hand,v

as half of the 'movement of the valve takes place upon the inner or lower'en'd ofthe valvelspindle, the upper end of the latter need ronly rise half as lfar above the valve-case in"` order .te open the valve to its full 'ezctent,andthe` valve-spindletakes up less spacewh'en" open; and is lessyliable to accidental injury. The

fact the ,valve-spindle is .raised by\open"j 2 y l 207,365 v ing the valve, and is consequently screwed intothe valve-case when the valve is closed,

. enables a person to know whether the valve is opened or closed from a glance at theposition of the valve-.screw relatively to the valve case.

The operation of the valveby a right and left handed screw, although advantageous, does not constitute a part of my present invention. g

The joint of the gate 0r valve is made tight when it is depressed by means of two inclined lugs, yfr a, cast on the sides of cavity of the case, upon which lugs two wedge-formed arms,

s s, ofthe disk-'carrier`slide, so the depression of the valve-carrier wedges the valve-disk home against the faceeof the valve-seat. The

portion o of the disk -earrier on which the valve-disk rests and the corresponding portion w of the rea-r of the disk are ring-formed.

.- These portions abutting on eachother furnish an even continuons ring bearing around the disk, and insure that it shall,y be thrust fairly and squarely` against the valve-seat at the final closing of the gate;

1' In order that the stop-gate may be readily connected with wrought-iron pipes with the capacity of ready removal, the nozzles of the valve-case are provided with au ges Gr G', and a screwed flange, H H', is applied to each nozzle of the valve-case. The ends ofthe pipes arer screwed into thesescrewed" flanges EL H.

The removal of the bolts which s'e'curefthe screwed flanges to the valve-case; permits the .latter to 'be readily removed and replaced.l

The flange H also performs another function,

v because if itis made as represented-in the draw ing, with its screwed opening of less diameter thanthe exterior of the'tubular valve-seat B,

and'if the tubular valve-seat be ofthe length represented, the butt of said valve-seat abuts against the face ofthe screwed iiange,1,which thus'su'stains the valve-seat securely'against` the thrust'of the valve and relieves thefscrewed thread on the exterior of the valve-'seat (or .such other fastening thereof as maybe used) t l ofexcessive strain. p y f One important practical result attending the construction of the s top-valvc, as abovel described, is that the whole of the tting may be done by means of a turning-lathe, so that the costy is low. The valve face or disk may alsobe readily ground to fit the seat, because there are no projections toy prevent the disk from rotating when it is ground..

.f The invention is not restricted to the means of tightening the joint of the valve which are represented'in the drawing, or to any particullar form of disk or valve face, because there ,are many modes known of tightening-the joint,

and dierent forms of disk, which might be used in embodying my invention.

'lhe portlon of my invention which relatesl tothe application of the valve-seat from the exterior also is not'restricted to the use of an undivided valve-case, because it is clear that in opening and closing the valve, also that even it' the valve-case be `divided into parts,

the valve-seat may, if preferred, be entered' yinto one of the nozzles thereof from its outer end.

I cla-im as my invention- 1. 'The combination, substantially as before set forth', of the undivided valve case, the valve, and the valve-seat, the last two of less diameter than the interior of one of the nozzles of the vvalve-case. v 2. -The combination, substantially as before set forth, of -the undivided valve-case, the

valve-seat inserted into one of lthe nozzles thereof, and the removable flange, which forms l a bearing-which sustains saidvvalve-seat.

3.' The combination, substantially as before set forth, of thedisk-carrier and disk or valve face, both constructed` with ring bearings, which abut against one another. y

Witnessmy hand this 26th day of December, A. D. 1877. 'i

g J'Aivins oris Monsn.

l Witnesses: v l

GARDNER D. HIscox, y -MoRsE BURrIs.

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