US283479A - Valve - Google Patents

Description

3 Sheets-Sheen 1.

(No Model.)

. T. 8: J. GALVIN.

VALVE.

Patented Aug. 2l, 1883.

(No'Model.) l 3`Sheetsh-Sheet 2. l

T. & J. GALVIN.

VALVE. l

Patented Aug. 21, 1883.

3 Sheets-Sheet 3.

(No Model.)

T. an J. GALVIN.

VALVE.'

N0. 283,479. Patented Aug. 21, 1883.

Jn ventana- Mw] 9412 12M! Umani)v STATES ATENT' riucn,

THADDEUS JrALVIX AND JOHN GALYIN,.OF DETROIT, MICHIGAN.

VALVE.

SPECIFICATION forming part of Letters Patent No. 283,479, dated August 21, 1883 Application filed May 21, 1883. (No model.)

Toy-all whom t may concern:

Be it known that we, THADDEUS GALVIN and JOHN GALvIN, oi' Detroit, inthe county of resents a longitudinal vertical section of a valve constructed in accordance with thisinvention;v

Y Fig. 2, a vertical transverse section of the same;

. rate seating of the disk or disks, while at the Fig. 3, a perspective view, `showing the working parts of the valve, one of the disks being removed; Fig. il, ahorizontal longitudinal section through the body of the valve; Fig. 5, a sectional view, showing certain details, and in which one disk only is employed; Fig. 6, a view of one of the wedges detached.

1 rEhe object of this invention is to construct a valve in which the disk or disks may be firmly forced against the seat or seats provided in the shell or case without theA sliding or grinding action common to most constructions where wedges are employed, and to effect the accusame time producing a cheap and simple valve. To this end the invention consists in constructing the valveas represented in the accompanying drawings, in which A represents a shell or case of substantially usual form, provided with a removable cap, B, a screw-stem, C, for raising and lowering the gates or disks, anda packing-gland or stuffing-box, D, applied to the cap B and encircling the screw-stem to prevent leakage, these parts being common to all valves of this class.

E represents a nut or yoke, through which t-he screw-stem G passes, said stem being provided with a collar, c, which, working between a flange or shoulder, b, in the cap B and the end of a thimble or sleeve, c, prevents longitudinal movement of thc screw stem, from which construction it will be seen that as the stem is rotated the yoke or nut E will be raised or lowered. 'As more plainly sh own in Fig. 8, this nut or yoke is formed with lateral shoulders or lugs d, upon which are hung the disks F, which forni the gate or cut-off of the valve, said disks being furnished with'ears e, having vertical. elongated eyes or openings f, through which the lugs d pass, the elongation ofthe eyes permitting a movement of the nut or yoke independently of the disks, as presently explained. The nut or yoke Eis further formed with arms q at right angles to the lugs d, the outer ends of which arms are arranged to work between guiding-ribs 71.-, formed in the body of the shell A at each side of the water-way, the arms g being turned inward to form hooks or hangers i, upon which are hung or suspended wedges G, which are forced inward toward each other by coming in Contact with beveled or inclined bearing-surfaces j, formed in the outer shell or case below the guiding-ribs h, the wedges Gt` being formed with perforated ears, as shown in Figs. 3 and 6, to fit upon the hooks or hangers i.

Thewedges G are arranged between the disks F, which disks are formed with inclines la on their inner faces, against which the wedges bear for the purpose of forcing .the disks apart. It will thus be seen that with the parts constructed and arranged as explained, if the screw-stem C be turned in the proper direction to cause the descent of the nut or yoke E, with its disks F and wedges G, the wedges, coming in contact with the inclines j, and being thereby forced inward toward each other against the inclined faces k' ofthe disks F, will force said disks apart, causing them to be firmly pressed against the bearing-facesl of the valve-case.

In order that the yoke may continue its downward movement after the disks F reach their lowest position, for the purpose of further crowding the wedges together, and thus spreading apart the disks F, the eyes in the ears c oi the disks F are vertically elongated, as above mentioned, and a spring, H, is interposed between the: block and 'lugs or` shoulders an, formed upon the inner faces of the disks F,

' said spring serving to normally press the disks downward in advance of the nut or yoke E and in advance ofthe wedges G, but yielding when the disks come in contact with stops u u at the bottoni of the case or shell, and permitting the yoke or nut E to continue its downward movement independently of the disks F. Thus it will be seen that after the disks F reach their iinal position (until which time no pressure is applied to force them apart) the wedging action takes place without any movement of the disks, except the separation or movement of the disks apart, duel to the spreading or wedging action mentioned. So, too, when the screw-stem is turned in the reverse direction for the purpose of opening the valve, the wedges G iirst rise independently of the disks F, which latter are urged or pressed downward by the spring-H until the wed ges have sufficiently withdrawn and swung back from the disks to relieve their faces of pressure and consequent friction, by which time the lugs d of the nut E will have reached the upper ends ofthe eyes or openings f, whereupon the disks will begin to rise with the block or nut E.

In some cases, for the purpose of giving a quicker action to the valve, the wedges are made of a gradual taper from end to end, as shown in Figs. 5 and 6, so that after the disks come to rest the downward movement of the wedges, as well as the inward movement, shall operate to spread the disks apart.

It is desirable in this class of valves to discharge the water and sediment which may collect in the space behind the gate or between the disks when two are used, and to accomplish this result there is provided a valve, r, the stem s of which is encircled by a spring, t, one end of which bears against the valve case or shell and the opposite end against a head, u, on the lower end of the valve-stem s, as shown in Fig. 5. d

rlhe stem works through an opening of larger diameter in the lower side of the shell or case, which is closed by the valve r whenever the water-way of the main valve is opened, the valve 1' being raised, however, in the act of closing said water-way, by reasonof one, of the disks F coming into contact with the end of a pivoted lever or yoke, c, the opposite end of which carries the valve o, as shown.

The spring t serves to close the valve i'.

The details of construction may ofcourse be varied, though'this form will be found etlicient.

It will be seen that all the parts of the valve are extremely simple and strong in construc-y tion, and require but little nishing to iit them kfor use, that the use of pivot-pins and the connection with a valve having a single disk, a

suitable skeleton frame being provided for the wedges to act against, or inclines or bearing the same as shown in the other figures, except that one disk is omitted, and the beveled bearing-faces 7c for one side of the wedges G to bear against are formed upon arms fr, projecting inward from the sides of the shell. rIhe parts act in 'precisely the same manner as under the construction before described.

Having thus described the invention, what is claimed isl. In a valve substantially such as shown, the combination of a shell or case, a sliding gate, a stem for moving said gate, and two swing# ing wedges arranged to swing laterally toward each other in a plane parallell with the face of the gate and behind the same, and to crowd the gate to its seat, substantially as explained.

2. In a valve substantially such as shown, the combination of a shell or case, a disk or gate, means, substantially such as described, for moving the gate, wedges tapered both in the direc- 75 5, in which the construction is in all respects tion of their length and in cross-section, and

arranged lto be moved behind the gate in a direction at right angles to the movement of the disk or gate, whereby the benefits of their taper in both directions is utilized for crowding the gate to its seat. d

. 3. lIhe herein-described valve, consisting of shell or case A, a rotating 'screw-stem, C, a yoke or nut, E, fitting upon said stem and carrying a disk, F, and wedges G, arrangedin rear of said disk, adapted to move in a plane parallel therewith, but at right angles to the.

line of movement ofthe gates, and arranged to bear against the rear face ofthe disk as the yoke or nut E descends, substantially as explained.

4'. The herein-described valve, 4consisting of shell A, cap B, threaded stem C, yoke E, provided with lugs d and arms g, disks F, and wedges G, all arranged and operating substantially as shown and described.

5. In a valve, the combination of a shell or case, A, provided with guides h and inclines j, cap B, stem C, nut or yoke E, provided with lugs d and arms g, disks F, and wedges G, carried by the nut or yoke E, all substantially as shown.

6. In a valve substantially such as shown and described, the combination, with a shell, A, of a movable block or yoke, E, provided with lugs d, disks F, having elongated eyes to receive said lugs, and formed withlugs m, wedges G, and spring H, interposed between the block and the lugs m', substantially as shown, and for the purpose explained.

7 In a valve substantially such as described, the combination of a shell or case and a verticallymoving nut or yoke, E, provided with IOS IIO

lateral studs or lugs cl and arms g, disks F, having perforated ears e, and suspended from the lugs d., and Wedges G, suspended from the arms g, all substantially as shown.

S. In a valve, the Combination of n shell or case, e vertieallymoving yoke, E, provided with arms g, and hooks i', Wedges G, suspended from said hooks, and a disk or disks, F, erranged,substantial1y as shown, to receive the pressure of the Wedges G.

- 9. In combination with shell or cese A and disks F F, having beveled faces k, swinging wedges located between thedisks, and liz-wing pose explained. f

' THADDEUS GALVIN. JOHN GALVTN. XVI' tne's'ses J. EDWIN PLAMoNDoN, GEO. F. BEASLEY.

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