US1577088A - Feed-water strainer for locomotives - Google Patents

Description

March 16,1926. 1,577,088

B. T. WILLISTON FEED WATER STRAINER FOR LOCOMOTIVES- Original Filed July 25, 1924 m 7 6&1 v 4 ,I W' e uuuu' a WEEEWBMEEUW J Zhve nZ-Or tention.

Patented Mar. 16, 1925.

UNI-IT so STATES?" LSYMSS- PM EN-T OFFE 'EfE.

BELVIN T. wInLIsToN; or solvtnnvius; MAssA'oHUsmiTs; AssIsNon' T01 MANNING, MAXWELL ecmoonn, mo, OF NEW Yam; N:=Y.,';&CQEPQBATION 0F JERSEY.

' Application newt-1y 25,1924, seri rnmfieagme." Re eweanovember 7, 1925;

Z 0 (HZ whom it may concern:

Be it known, that I; BELYILN T. \YiLLIsjToNI, a citizen of the United Statesof Al1'16llC2l,.,

end resident otSomerville in the county of Middlesex and State of Massachusetts,have invented; nen and" nsefnl Improx 'ements in Feed-Water Strainers for Loeomotix'es, of which the following is a SPBC'ifiOdtiOIL v This invention relates to'strainers snch as are used to strain the feed water injected into locomotive boilers, such strainers being interposed in the pipe leading from the tender'tiink to the injector and commonly comprising a housing having sepnrah'le parts enclosing a foraininous or perforated screen orgrid.

monly held together by meansoi'eseries of bolts and nutsjwhich must he. removed to gsin e'ccessto'the screenfffor cleaning it' As the strainer is locateddireetlyo'verthe' roadhed it frequently happens: that the connect ing bolts and nnts,g after removal droppedor mislaid andilost, \vhile'tl'ie time and ti onble involved in the removal and replacement of so many parts often induces neglect of the oieaningopemtion. I

One of the ho'usingisectiolfis is common-1y secured to ,thejen d of wflBXiblB hose'leadiiig from the tender tank and when the. housing sections are uncoupled this flexibly sup ported section is ns ieil'y pefmitted to drop onto the groiindi As itssniittoe'sfa re Wet it again united tends-t0 produce an impel-test joint with consequent leakage.

Moreover it the screen; is positioned merely by being: clamped hji the ogno'sed feces oi the housing;sections italso is liable to be dropped out onto the road-bee, when the. sections are nn eouple d, sometimes re stiltingfin darn-age or loss, find its proper; replacement re'qnires considerebie care 2th.;

Principal Ohjectsoi the inventio 7 provide strainer of this type havi g: separable housingvsections enolosingga screen or grid in which the housing sections are clamped together by means ofa'singlefpre jsurev applying device which is per-manentiy secured to one of the housing se-otions so thatitoannot readily be misplaced or lost,

The parts of the strainer honsingnre Comand by means of which the parts qi nchlyi be clamped firmly together or. with the same facility loosened" for separation; to

providemeans' for temporarily supporting. the hQsttfiaiflled section of the housing,- such supporting means, howeverg being tion relative to; one; of the sections" of the housing jei en' after removal of the other sect1o1ibiit which permit-stile ready removal end re j lic'eme nt (it the screen and to embody'the above features in adev-ice of simple and sturdy; character containing a minimum number of parts; o

In the accompanying drawings & preferred embodiment of the invention is sli-own by Why of exempts,

F '1 being a plan View of the improved st' ainer certaiii, pertsheing'. shown in section;ja nd FiggQ bei'ng: e'vei tie'z l section subs-tan! In the' drawingtheletter A de i iniet section oi the strziiner housing. 01'; cosing; while B indioates' the ontiet'section of such lions-Inger casing-These sections are hollow tind coinple'nientnry to each-other, the. tion'A he?" lpiov-id edjvith an externally fortugnted tuairlei: jortionl to which the end' of thehose idf leading. from the tender tank is zitteehet l The seetion B is pfovided with aninte naily screw threadedopening Zffqr nastiest t to the pipe, not shown; 1c" inglto' thelocomotiveinjector; The sec tYon BK shapportedin the usual manner by s f a rigidhrecket i 'depending iroih ti'ieloc nioti've frame. i I

Theopposedlsiiiftaoes of the sections A end B: see preferably provjdet with intei fitting m'i'ts the section B hitting a flange 3' nd'iich'fit-s within a groove +t..in the opposed acme the section A. .Ti'iisigroove preferahly holds L1 pecking ring 50-1 any suitable nint'eriei adzipted to make a tight jdint-hetween'the parts. 1 V

For cian'ipi'ng the parts together in operative. relationship a baiI Iike ni -ember 6 is provided; This member comprises spaced -legs 6 and SIh'atning aligned openings near theirends,'Whieh'reeeive thetrunnions 7 projecting frontdiametrically opposite sides of hates the to form the head ti which is provided with an internally screw threaded bore for the reception of the clamping bolt 8. The rear part of the section A. is furnished with a thickened portion or boss 9 preferably provided with a recess 9 in which a wear resistant plate 9 seated. A curved horn or hook 10 projects upwardly from the edge of the section. A for supporting the section temporarily when unclan'lped from section 13, as hereinafter described.

The section 1) is furnished with an annular groove 11 just inside the flange 8 and this groove receives a screen or grid 12. This screen or grid. is of circular contour and preferably at a diameter slightly less than that ot the groove it. The outer wall ll" oi the groove cut away to permit the introduction or the screen or grid when disposed coaxially with the groove, while the rear wall ll of the groove is of such depth as to prevent escape of the screen. The screen is provided with finger pieces 13 by which it may be picked up and advanced axially into the groove. After entering the groove the screen may be dropped into the lower part of the groove where it remains securely held until again lifted for removal.

\Vhen in use the parts normally occupy the position shown in Fig. 2, wherein the screen 1'2 is seated in the groove 11 and sections A and B aresecurely clamped together by engagement of the inner end of the bolt 8 with the wear plate 9". The bolt 8 may, if desired, be provided with a lock nut 8 for securing it in adjusted nosition.

hen the screen isto e removed for cleaning the bolt 8 is retracted and the bail t) isswung upwardly to permit the section A to be dropped away from the section B to the dotted line position indicated in Fi As soon as the parts are free the bail is permitted to swing downwardly and when in this position forms a support for section A, the horn 1O resting upon the inner face of the head 6 of the bail. lVhile the horn rests upon the surface of the bail and thus supports the section A and normally revents it from dropping onto the roaded, the engagement of the parts is not positive so that if the tender be uncoupled from the engine and moved away, the born 10 will automatically release itself lrom the bail and the hose section will not be broken.

After separation of the sections of the llOrlSlllg' the screen may readily be removed and cleaned and then dropped back into position where it is securely held while the section A is being replaced. For clamping the parts together the bail is replaced in the position shown in Fig. 2 and the bolt 8 is set: up against the wear plate 9 until the desired clamping pressure is obtained.

With this simple construction the objects of the invention are attained in a highly etlicient manner while the construction is such that many ot the parts may be standard type and the device in general is relatively cheap to construct.

I claim:

1. A strainer comprising a casing having separable sections, a member on one section movable to engage the other section for se curing said sections together, one of said sections being provided with an internal groove, and a screen or grid loosely mounted in said groove and removable therefron'i after said sections have been separated by suec ...sive dian'ietral and axial movements.

1 A. strainer comprising a casing having separable sections, means tor securing said sections together in tluiddight relation, one of said sectitms being provided with an annular recess, and a screen or grid ot a smaller diameter than the diameter of said recess normally arranged in. said recess, the grid being 10l'l'lOVtilJlG from the casing after said sections have been separated by movement transversely to clear the outer wall of the recess and subsequent axial movement.

23. A strainer con'iprising a casing having separable sections, means for securing said sections together in fluid-tight relation, an annular groove in the inner surface of one of said sections adjacent to the joint be tween the sections and a circular screen or grid of smaller diameter than the diameter of said recess arranged in said recess, said screen or grid being removable from the casing after the sections have been separated by lifting it into concentric relation to the re cess and by subsequent axial movement relatively to the plane of the recess.

t. A strainer of the class described comprising a rigidly supported outlet section, an inlet section having a tubular portion adapted to receive the end of a hose, 9. screen,

and means normally holding the inlet and outlet sections in cooperating engaged relation and for supporting the inlet section when temporarily disengaged :trom the outlet section.

5. A strainer oi the class described comprising an outlet section, an inlet sect-ion havlng a tubular portion to receive the end 01 a flexible feed pipe, releasable means nor mally clamping the inlet section to the out let section, said inlet section having a curved normally inoperative book, a screen accessible for cleaning when the inlet and outlet sections are separated, and clamping means including a part with which the book of the inlet section may be engaged, when the sections are separated, for supporting the inlet section, said hook being so shaped as to slip from said part of the clamping means it longitudinal tension is applied to the hose.

(3. A strainer oi the class described comprising a housing or casing having an inlet section, an outlet section and a removableill] ble of disengaging its supporting means if subjected to longitudinal drag of the hose.

Y. [L strainer comprising a housing or casing having an inlet section and an outlet section, a screen normally held in fixed position between said sections, a rigid support for the outlet section, the inlet section having a tubular portion for the reception of the end of a hose, a clamping device -for connecting the sections, and a hook carried by the inlet section and engageable with a. partcarried by the outlet section temporarily to support the inlet section when the sections are uncoupled, the hook and the part with which it engages being so shaped as to permit the inlet section freely to drop when subjected to pull in a direction away from the outlet section.

8. A strainer comprising a housing or casing having an inlet section and an outlet S8Cl1lO11,lI1Ci a screen, a rigid support for the outlet section, the inlet section being provided with a hose attaching portion, a bail pivotally attached to the outlet section and provided with a clamping bolt engageable with the inlet section normally to connect the sections, and a curved horn projecting from the inlet sectlonengageable with the bail when the sections are uncoupled tem porarily to support theinlet section.

9, A strainer comprising a housing or casing having an inlet sect-ion and an outlet section, and a removable screen, the inlet section having an externally corrugated tubular part for the reception of a flexible hose, a rigid support -for the outlet section,

bail pivotally attached to the outlet sec: tion, sald bail carrying a pressure applying bolt, the inlet section having a recess and a wear plate within the recess for engagement with the end of the bolt when the parts are assembled, and a hook member carried by the inlet member andengageable with the bail when the inlet and outlet are discon nected whereby temporarily to support the inlet section and the hose connected thereto.

Signed by me at Boston, Massachusetts this 24th day of July 1924:.

BELVIN T. VVILLISTON,

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