US955043A - Valve. - Google Patents

Description

H. E. BARR & C. WAINWRIGHT.

. VALVE. APPLICATION FILED AUG. 1a, 190s.

. 955,043. v Patented Apr.12,1910.

vente@ @Minuut Y To all 'who/rn valve of the automatic lift ty closing operation Y which has passed beyond 5 designates the mirri-1D srirrns PATENT orricn.

HARRY EDSIL BARR AND CHARLES WAINWRIGHT, F ERIE, PENNSYLVANIA.

VALVE.

speciaeanon of Letters Patent. Patented Apr. 12, k1910.

Application led `August 18, 1908. Serial No. 449,100.

with a snug sliding t in a valve ide 6 of cylindrical form corresponding with the form of the valve, said valve being provided with a main conicalworking .face 7 while on the side next to the compression cylinder, said valve is provided with a shallow or narpreclosure face 8 just sufit may concern."

Be it known that we, HARRY EDsrL BARR and CHARLES WAiNwRiGn'r, citizens of the United States, residin at Erie,inthe county of Erie and State of ennsylvania, have invented new and usef ul Improvements in Valves, of which the following is a specification.

This invention relates to valves, the obj ect of the invention being to produce a discharge e for air compressors andthe like, which is so cushioned in operation that a considerable degree of lift may be imparted thereto thus securing the full area of thevalve opening, while the ered positive operation of the valve is rend on account of the cushioning] effect obtained a cushion -chamber and piston or head and a .preclosure face, which combined, act to' overcome an tend of the valve to dance or chatter on the valve seat during the also preventing the air the valve .from

row cylindrical cient to fill the p immediately before 7 comes in contact with which is also cone-shaped to agree withthe working face of' the valve. The air passing through the port 2 and getting by the valve 5 finds its exit through one or more openings 10 in the guide 6 into the chamber or discharge space width Sufficient to close the ports 10 which lead into an-air discharge space 4 between the cylinder wall l and the outer` wall 3 of said space.

'portion thereo iowing back into the'compressin cylinder, wall 3. The cap 11 is screwed upon the the result being avalve prticulary adapted outer end' of the valve guide 6 and has a to quite. high speed wor hollow cylindrical central portion 12 which A further ob]ect of the invention is to proextends well into the valve guide 6, the exvide a construction whereby the operation o tremev inner portion thereof being reduced the valve will not be effected or impaire by as shown at 13. The valve 5 is provided any dirt finding its'way under the valve cap with a stem 14 upon the outer end of which ion chamber is of less diameter than the portingenc so that the valve may readily actions 12 and 13 above described so as to leave comino ateitself to the valve seat and work 16 to adjust itsel f to the valve stem 14: re-` ardless of the position of the cap the nature of which will more fully appear 11 as to as the description procee s, the invention consists in the novel construction, combinawhether the latter is exactly centered or not. tion and arrangement of arts as hereinafter The outer en ofthe cushion chamber is described, illustrated an claimed. closed by means of aiplug 19 which screws The accompanying draw'ng represents a into the cap 11 and seals the outer end o chamber. Air is admitted from into the space 20 beneath the piston 15 by means of ports formedv respectivel the cushion the space 4 cushionhead or 21, 22, and 23, guide 6 the part 12 of the 'cap' and the cushion chamber 24 designates sectional view o present invention.

In the accompanying drawings, nates the wall of a valve embodying the 1 desigthe cylinder in which the air compressin piston operates, said wallbeingrovided with a port 2 leading to the valve of this invention, and 3 designates the the valve closing spring which is interposed between outer wall of the compressed air chamber the valve 5 and the cap 11. l

I which leads to a suitable storage tank 4 des- By means of the construction just deignating such compressed air passage which scribed, the inner cushion chamber is adaptp surrounds the valve and its guide. ed to adjust itself tothe valve 5 and center valve which is mounted itself with stem of said valve relation to the is screwed into the outer with perfect freedom. anintervening annular space as shown at 17 With the above and'other objects in view, 'and 18 thereby adapting the inner mem The cylindrical face of the valve is of al bbeted v or by reason o the wabbling of the walls is secured a cushion head or piston 15 which of the valve cap, the construction hereinafter has a snug sliding fit in a self-adjusting cap described makin allowance for such con- 16 forming the cushion chamber. This cus f thus insuring the easy working of the cushion head or piston connected with said valve.

` e claim:

A valve comprising a valve guide, a 5 valve embodying a cylindrical body mounted to slide within the fvalve ide 'and also provided with a frusta-conica workinfg face ace a ed yto slide within the valve ide and also provided with a frusto-conicarll a cushion head or piston carried by said vided with a central hollow cylindrical or# 25 the head or piston works, an a plug removr ably fitted in the outer end of the cap and 30 serving to hold .the cushion chamber in place, substantiall as described.I In testimony whereof we ax our signa- 10 a cap fitted to said guide and provided with a central hollow cylindrical portion which `extends into' the valve guide, a cup-shaped cushion chamber removably tted`in said cap, in which cushion chamber the head or turcs 1n presence of two witnesses.

15 piston works 'and a plug removably tted in' H: EDS-IL BARR.

the outer endmof the cap and serving to hold t e cushion chamber 1n place, substantially I CHARLES WAINWRIGHT' as described. p Witnesses: 2. A valve comprising a valve guide, a FRED J. CARNEY, 20 valve embodying a cylindrical body mount- F. R. GILL, Jr.'

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