USRE2898E - Joseph j - Google Patents

Description

stitch tetra gaunt JOSEPH J. FRENCH also REUBEN Maoist Thor, or BALTIMORE. M'Anr- LAND, ASSIGNEES or JOSEPH J; FRENCH.

Letters Patent No. 66,318, dated July 2, 1867-, reissue No. 2,898, dated March 17, 1868.

IMPROVEMENT IN GLOBE- VALVES.

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TO ALL WHOM IT MAY CONCERN:

Be it known that JOSEPH J. FRENCH, of the city of Baltimore, in tho county-of Baltimore, in the State ofMarylsnd, inventeda new and improved Mode of Making Globe-Valves, for use with stcanf, water, and gaspipes; and we do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, in .rehich The nature of the invention consists in a globe-valve with a solid a'rch or casting, carrying at its apex a hollow screw, and having at its lower end, which screws into the bonnet of the valve, a packing-box and bearing for the valve-stem. The stem of the valve is smooth, and works-through the packing-box and hollow screw, and terminates in a square prqjection'abovc the hollow screw and lever-wheel, for thepu'rpose of being enabled to place thereon a brace or lever to grind the valve to its seat in the globe.

To enable others skilled in the art to make this invention, we will proceed to describe the' par ts thereof. A is the body of the valve. H is a solid arch or casting, which-screws into the bonnet of the valve. 13

is a hollow screw, to which is attached the lever-wheel A. C is a valve, to which the stem or shaft D is attached.

a is a shoulder onthe eternal), on which the hollow screwB rests. is a pin, which holds the shaft D in its place in the hollow screw B,' and isso placed that the shaft D willhe suificiently loose to turn in the hollow screw B, and the screw B to turn independently of the shaft D..J is a square projection of tho shaft 1). F is a plug, having a screw-thread on it, and holcsffin its upper edge to allow ofa lever being inserted in them for g H the purpose of screwing the plug up or down. G is a box or receptacle, in the base of the support to thc 'holl ow screw, to receive the packing, which is kept implaoe by the plug F. The partH carrying the hollow screw at its apex, and which screws into the bonnet of the valve, being made of a solid casting, forms a firm support,

both at its apex and its base, for the valve'stcm, to keep it in line. The opening and closing of thvalve are effected by the wheel A" and hollow screw B, which carries the shaft D up and presses it down, accordingly as 'the screw B is turned. I

To grind the valve 0 to its seat, upscrew the arch H, apd put the grinding-material on .the valve; then replace the arch, andby means of a brace or levorrot atc the valve until the parts are ground to fit. When the valve is sufficiently ground, take out the arch, clear the ports from sand and grit, then replace the arch, and a perfectifitting joint will be secured. The valve-stem, which passcsthrou gh the packing-box, being straight and smooth, will work the packing without twisting or dragging it out. p A globe-valve made as hereinbcfore described, will contain the following-described qualities:

First, 'the arch or support to the hollow screw being cast in one piece, and thereby being rigid, will retain the hearings to the valve-stem perfectly in line.

Secoifd, tho valvebeing ground to its seat in the globe, with its stem in its permanent bearings, can be ground with great facility and ease, and a perfcct-iitting joint secured thereby.

Third, the valve-stem being kept in perfect line by the bearings, the valve-will always come fair'on its seat, and therefore avoid abrasion of the valve or its scat. l v I Fourth, the valve being set tight upon its seat by means of the hollow screw turning upon the smooth shoulder of the valve-stem, the valve will close uponits seat without turning, and is thereby relieved from friction or abrasion from the turning of the screw.

Fifth, the hollow screw being removed some distance from contact with steampand being at all times exposed, it thereby avoids all liability of becoming heated and chafed, and can be lubricated and kept in order with case. Y

Sixth, the valve-stem being smooth, and working through, the packing without turning or twisting, all liability of the packing being dragged out is avoided. T

Having thus described the invention, we cl-.iim-

A globe-valve composed of the body A, solid snpport'H, carrying at its apex the hollow screw B, and lever A, with plug to stuiling-box F, the parts all made and arranged substantially as shown and described.

-' JOSEPH J. FRENCH,-

REUBEN A. McOAULEY. Witnesses:

JAMES C. LYON, GEO. E. Sanesron.

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