US 990179 A
Description (OCR text may contain errors)
J. M. & J. A. WILSON.
NOZZLB FOB DELIVERING VISGOUS LIQUDS, AS PAINT REMGVERS. APPLIUATION FILED 11ov.24, 190s.
Patented Apr. 18, 1911.
wit/mme cio Il l l W 3513- HozM-egs surfaces of the respective elements .in tricktional engagement with each other carefully machined and thereby t-he binding'fof the packing or washers," which often occurs, is entirely eliminated and any irregular oper- -ation of the valve-mechanism is prevented.
Theoset 4" is preferably of substantially4 tubular configuration at its rear 'endg the said. oset being flattened at its lforward end to reduce the .amount .of metal which is re'-l quired' in the. construction of the same, obviously said offset .being cast and not hammeredout from an elliptical tube, and the tubular portion of the offset is adapted to receive la pin-12, actuatedl by a coil spring 11 which embraces saidpin and is positioned within the recess aforesaid. The upper-end of said pin-'preferably is provided with a copilhead 1,2 which serves as an abutment 20- et' one `and of'sa-id coil spring, the opposite efdofsaid Spring obviously being in enga ge' ment with'the'bottomof'said recess 11 'when said lever is .depressed by' grippingthe handle end 3 and exerting vpressure thereon.
The construction herein described, owing to the fact that the cut-off piston is adapted to .alternately project from-the lowerinost lend of the, valre-casingto the uppermost Y end of: the ;fsame,'thereby completely illing the same periodically and affecting the ejection ofany, liquid which may tend to escape.v
beneath' the lowermost end, and also,- al-` though it is less likely to occur, above the "upper-end of the said cut-off piston. It is evident that-'the provision of such a cut-olf piston requires that the elastic element actu-"- ating the same be positioned externally of thevalve-casing, and not only does the construction shown, wherein the coil spring is positioned externally of the valre-casing and intermediate the handle-end of the lever and its 'fulcrum, permit of the more effective actuation of said lever, owing to the elimina.-
- wax containing,
posed pliedcan then be suitably spread' thereon tion. of all possibility of clogging \clue to dried or semi-dried films ofpaint removers containing wax, collodion, & cf,1, \but,also the renewal Yof said rspring eleinentgjor the adjustment ofi the same, can be accomplished Without opening the valve-casing and there l`by. permitting 'access of `the .atmosphere Within the same.
" Thisno'zzle can be advantageously @niiveringa .solid stream of av or collodion containing, remover, or'a liquid paint, -to anexsurfa'ce andthe said mixture soapp'loyed for del paint I byfmeans of zin-ordinary paint'bruslr. Preferably-the injection of the mixture employed, Ais accomplishedgby means of pneumatic pressure l accordingfto the method describedin ythisynoz'zle may; beadvantageously substii the paten-tto-lllilsonabove mentioned, and I 'tuted in llieiijaofgthe-fnozzle therein described,
aspray-tip may be employed, according as a solid stream of the liquid, ora linesprav. of the same, majy be desired.
Owingto the 4fact that immediately qllowingthe release of the handle 3 from the pressure applied thereto,lthe coil spring 11,` which normally exerts .jgiiessure` upon said pin l2. will eect instartly the closure of the inlet p'ort'l and the said piston'containing occluded liquid in the water-way Swill'be projected into the lower end of the 'valvecasing 5,-all the volatile or oxidizable ingredientsotl theV liquid mixture lemployed will be ettectually sealedV against atmospheric influence, thus permitting of the repeated actuation or reciprocation of the cut-off piston, without permitting the same tol be clogged with pas'ty or semi-dried residues of the liquid employed. jIn'order. to permit the said .valve to be"'i'1iterchangeably employed for the application 'of viscous, film- Jforming remoiiers, as well as volatile and extremely lig-lit, non-lfm-forming removers,
commonly known as Washes, it-is essential that the valve mechanism be constructed so as to eliminate the necessity .tor employing rubber gaskets or packing-rings, either around the movable element or at the joints,
as the solventscontainedin said removers are extremely activfe in their action onrubber and readily dissolve the sanie'. The censtruction preferably employed consists Aof a biturcated cut-ott piston 7, which is pro vided with an adjusting screw-.16 'adaptedl to optionally increase'theldiameter of said piston in a'direction parallelto the longi:
`tudinal axis of the liquid-way 8. A channel or slot 17, positioned to one side'ot the longif tudinal axis of said piston'etfects the division y of vthe\said piston 'into two distinct legs, the one as shown-being substantially smaller than the otheitfandfbeiiig, accordinglyreadily adjustable with 'respect to' the larger one,
bvlmeans-pf said adjusting screw' 16, which is threa led enga ement' with an aperture extending complete through the smaller leg, thus penmitting'the inner-end ofsa-id screw-,to abut, against the inner face of the larger". leg. By slightly turning said screw it is evident that the "smaller 'leg will bey sprung outwardly, provided the end of said screw is caused to exert pressure upon the. inner face of saida-larger leg, and vice versa when' the screw isreYerSedthe pressure will. be relieved and the two legs of the piston will assume their no rinal position with respect to each other. .t
The bifurcated piston described,` admitsl of the machining of the opposing faces ot the piston independently in orderll that an exact` fit between -the Vwalls of said valve: -casing and the-faces of-said'piston may be secured, asv by the mere .revolution v of the adjusting screw the opposing `faces of-said piston, which are adjacent theinlet and ol'ltletporta1A of said valve-casing, may be brought intoj intimate @engagement with vthe 'walls of said` valve-casing, which 'are both above and below said inlet and outlet ports. Thus, Aentirely irrespective of whether a tight fitting-piston can belcon'structed without' the emplo ent of flexible packing-rings i when solidlplstns are employed, it is poswhatsoever.' 1
sible vby the yemployment Yof the aforesaid bifurcated piston to procure .a li uid-tight fit without any packing-rings on t e piston At the upper end of the valve-casing a shoulder Iv15l isl provided which is adaplted 1 5'- tly,
. The central openings through said washers and gasket are of a size to snugly receive the piston rod 6 and said elastic felt' gasket is sutlicientl thick so that when the cap 10l is screwe down tight it will be lcompressed by the leather washer 13 and thereby an ext-remely intimate fit will be secured between the piston'rod 6 and said feltythereby en.-
tirely yeliminating any possibilit!y of the es- ,capeA of the liquid' while adfmi ing of the ready reciprocation of the piston'rod.
Communication between the upper end of the valve-casing, namely the chamber 5', and the lower end of said valve-casing, is affordd by means of a vertical peripheral groove b vhch communicates with the said slot 17 y ands-this permits of the escape of air or l, liqliid'vrom above said piston. The lower end of said piston is cut away as shown at `a to reduce the amount of surface in contact with casing. Having thus described our we claim is:
invention what 1. In a nozzle, the combination compris.
. let port in communication therewith and opposltely disposed with `respect-thereto, an expansible cut-ofi' valve adapted to snugly fit within said casing and capable of periodically engaging with the opposing ends u said casing,
unseated respectively and means external ofof said casing, andmeansdisposcd externally of said casing capable of actuating saidpiston andadapte .to normally sea said inlet and outlet ports againstV communication. 4
3. Ln a nozzle, the ing a valve-casing, an inlet portand antojitlet port in alinement with each other,y an expansible cut-oil:` valve disposed intermediate `said ports, and `arranged tonormally seal the same against 'communicatiompsaid y/valve bein adapted to snu l Vjitwithinsaid g g Y casing and being capable o periodically and alternately en said valve is seated and englaging the opposingl ende' of v. ,y v7o combination comprissaidbasing adapted tonormally affect the i sealing against communication of said inle Fand outlet ports.y
4.111 a nozzle, the combinationcomprising a body ortion provided with communicating longitudinal and transverse bores, an expansible cut-olf valve arranged to reciprocate withinl said transverse bore, an offset on said body provided with a recess adapted vto receive a s ring-'pin and a lever secured to saidcut-o valve andfulcrumedon said offset, said lever being normally depressed with respect to the end connected to said valve by said sprin 4 v .5. In a nozz e, tle combination comprisl ing a, body portion provided with a valvecasing and an oi'set distinct from said valvecasing, an expansible cut-oli valve. adapted to reciprocate within said valve-Casin and lca able of engaging the lower end o? said va ve-casing, a lever fulcrumed on said oilset and secured to said valve, a spring element positioned in a recess in said offset and adapted to normally depress one,end of said lever and maintain the lower end of said valve in contact with the lower end of said valve-casing. i
G. In a nozzle, the combination'comprisling a body portion provided with a valve casing and an offset distinct from said valvecasing, a cut-.0H valve adapted to reciprocate gaging the lower end of said Valve-casing, a lever pivotally connected with said oset, said lever being providedwith a curved face adapted tol relieve the pivot element from excessive pressure during oscillation of said lever, a spring-pin having a conical up er cndpostioned within a recess in said oiipset and adapted to normally maintain the end of said lever with which'it permanently con` tacts in an elevated position.
7. A cut-off valve',l comprising a valvecasing, transverse inlet and outlet ports, a bifurcated piston provided with a liquidway therethrough adapted to optionally afford communication between said inlet and outlet ports and means for voptionally effecting the separation of the lower ends of said 'within said valve-casing and capable of eniso bifurcted piston in `excess of the normal separation thereof,"means for limiting the 'upward movement of said cut-ofi' piston.
When said liquid-Way is in register with said to limit the upward movement of said plston, said packing means being arev 'ranged to entirelyenvelop aVpiston-rod in tegrally connected 'with'salid piston, :1 cap. ifW'itnesses:v aclpted toseal one end of said casing and. provided with an opening adaptedtosnugly' l w receive said piston rod and packing means adapted to seal the jointbetween said cap and said casing'.
Signed at New York in the county of'NeW York and. State of New York, this 31st day Y o f July JLD. 1908.
' JOHN M; WLSON.
JAMES-A. WILSON I CHARLES T.. CARLL,- J.' KEMPE.