US1609629A

US1609629A - Lubbicant-expellikrg device

Info

Publication number: US1609629A
Authority: US
Publication date: 1926-12-07
Anticipated expiration: 1943-12-07

Description

. Dec. 7 1926.

H. J. MURPHY LUBRICANT EXPELLING DEVICE Filed Feb. 11,

Bee. '7, 1926.

i r iTiET @FFECE.

HOWARD J. MURPHY, OF READING, MASSACHUSETTS.

LUBRICANT-EXPELLING DEVICE.

This invention aims to provide an improved high pressure lubricant-expelling device.

In the drawings, which illustrate a prei'erred embodiment of my invention Figure 1 is a longitudinal section through alubricant-expelling gun, being partly in elevation;

Fig. 2 is a longitudinal section through the discharge end of the gun, being partly in elevation and showing the relation of the parts thereofwhen lubricant is being expelled to a lubricant-receiving nipple shown in elevation; and

Fig. 3 is a irontend elevation of the lubricant-expelling device.

Referring to the drawings, I have shown a lubricant-expelling gun which includes means for expelling lubricant under pressure in substantiall the same manner and for the same purposes as more fully illustratet and described in my co-pending applfcation Serial No. 8,582, filed herewith, in

which copending application the invention is more broadly claimed.

The drawings show an improved and simplified arrangement of parts within the discharge end of the gun. These parts may be assembled and disassembled very easily and quickly and are arranged so that they are held together by a single sleeve. The parts are also arranged, as illustrated, so as to withstand the high pressure exerted upon them when lubricant is being expelled from the nozzle to a lubricant-receiving nipple, as illustrated in Fig. 2.

Referring to Fig. 1, I have shown the usual barrel 1, having a rear head 2 into which is threaded a plunger stem 3 carrying the usual plunger 1 and handle 5 at the respective ends thereof. At the iront or discharge end oi the gun, I have shown a reduced end portion 6, formed integral with the barrel 1 and exteriorly threaded for engagement with the interior threads of a nozzle sleeve 7.

The coupling part or nozzle sleeve 7 presents interiorly thereof, adjacent its outer end, relatively steep pitched threads 8 for engagement with the threads 9 of a lubricant-receiving nipple 10. Beyond the threads 8, I have provided a shoulder 11 against which is seated a centering washer 12, which supports a suitable hat-shaped sealing washer 13 and also centers and limits the movement of the nozzle of the gun over the lubricant-receiving nipple 10. The coupling threads, nipple, centering washer and hat washer are substantially as shown and more fully described in my co-pending application, Serial No. 616,302, filed Febru ary 1, 1923.

Within the nozzle, I have provided a valve-carrying part let having a chamber 15 therein of relatively smaller cross-sectional area than the barrel 1. This valve-carrying part fits partly within the reduced end portion 6 of the barrel and is provided with a tapered shoulder 16 seated against the end of the reduced end portion 6. A hollow valve seat part 17 fits between the outer end of the valve-carrying part 14 and centering part 12 and receives the hat washer 13. The part 17 has a tapered end portion 19 seated against the end of the valve-carrying part 14 and a shouldered end portion holding the base 18 of the sealing washer 13 be tween it and the centering washer 12.

The valve seat part 17 presents a valve seat 21 against which a relatively large closure valve 22 is seated (Fig. 1) to prevent passage of lubricant out of the nozzle except when the closure valve is displaced by the end of the nipple.

At the inner end of the valve-carrying part 14, I have provided a ball check valve 23 and between both valves is a spring 24 normally closing them. The valve seat part 17 is a relatively small part and, when worn to an extent that the closure valve does not prevent leakage, it may be easily and inexpensively replaced, whereas the valve seat part shown in my first-mentioned copending application filed herewith, would be a more expensive replacement part and could not be as easily and quickly replaced.

Heretofore some trouble has been experienced in holding the hat-washer sealing part in place. If the parts that hold the sealin washer are drawn together too tightly, the base portion 18 is apt to be severed from the rest of the washer. To remedy this, I have provided a shoulder 25 at the outer end of the valve seat part against which the base of the washer rests and a relatively thin annular flange portion 26 which surrounds the peripher of the base portion 18 and seats against t e centering washer 12 i oration, may

and

to limit the amount wiich the base of he washer may be conn ssed. Thus the base 18 of the sealing w ier 13 can never be squeezed enough 101 it to be cut away from the remainder thereof.

In assembling the nozzle of the gun with the barrel, the c-' washer 12, sealing washer 13, the valve seat part 17, the valves and 23 and valve-carrying part 1%: are assembled within the nozzle sleeve 7. The end of the valvecarrying part is then in serted within the reduced end portion 6 of the barrel 1 and the sleeve is screwed over the end portion until the p rts are gripped tigl'itly between the end of the reduced end portion 6 and the shoulder 11. The tapered shoulders and 19 provide E-EQillS between the parts of" the nozzle to prevent 'hiloricant from 'le lrin past the parts where they seat against each other.

Strain upon the parts off the nozzle, due to the pressure of the lubricant, exerted inainly span the threats between the slee e 7 and the reduced end 3 t the barrel 1. As there a relauiv 1y large area of engage-- nient the threads on these parts, there can be no great dai'igcr of lestroying the nozzle or any parts thereof, by pressure of the lubricant. V

Lubricant may be or killed from the chamber 15' to the lubricant-receiving nipple 10 under a relatively high potential pressure or low potential pressure in the same manner as fully described in my first-mentioned co-pending application filed herewith.

"While I have shown and described a pre ferred en'ibodiinent of my invention, it will be understood that changes involving omission, alteration, substitution and reversal of parts, and even changes in the mode 01" opbe made without departing from the scope of my invention, which is best defined in the appended claims.

Claims? 1. A lubricant-expelling device including a barrel having a reduced end portion fornicd integral with said barrel, a valve cia rrying partliaving a shoulder abutting the end of said aced portion, a valve seat part abutting the end of said valvecarrying part, a valve or said valve-carrying part coacting with the salve seat for said valve 1 seat part, a sealing washer and a metal washer beyond said valve part and a coupling part presenting a sleeve secured to the edu ced e 'd p'o on of said barrel for lol'l' all of said parts in assembled leist I; v. h said. barrel, I

2. A;lubricant enp elling device including a barrel having a reduced end portion fdrmeid integral with said barrel, a nozzle sleevejtln adeoy secured to said reduced end portion, c ing an adjacent the ofsaid sleeve, a shoulder presented by said sleeve inwardly of said coupling means;

washer, a valve seat part and a valve-carrying part all. held in assembled relation with said barrel, between the end of said reduced portion and said shoulder, by said nozzle sleeve, and a valve for said valve-carrying part coacting with said valve seat.

A lubricant-expelling device including a barrel having a reduced end portion formed integral with said barrel, a valvecarrying part having a tapered shoulder seated against the end ol said reduced portion, a valve seat part having a tapered shoulder seated against the end of said valve carrying part, a valve for said valve-carrying part coacting with. said valve seat, and a nozzle sleeve secured to said reduced end portion and holding said tapered shoulders ti htly against their seats to provide seals a ainst escape of lubricant between darts.

l. A lubricant-expelling device including a nozzle having a nozzle sleeve presenting a metal washer, a flexible seali coupling means at the outer end thereof for V engage :rent with a ltllJTlCittlt-I'QCGlVlDg nipple, means forming a shoulder on said sleeve inwardly of said coupling means, a flexible hat washer for engagement with the lubricant-receiving nipple to provide a ight seal between the nipple and said nozzle, a valve seat part presenting a recessed end having a shoulder squeezed against the base of said hat washer for holding the latter in place, said recessed end of said valve seat part providing means to prevent said valve seat 1 art llOlll severing the base of said hat washer from the remainder thereof when squeezed there-against, and a valve coacting with said valve seat part.

5. i; lubricant-e xpelling device including a nozzle having a nozzle sleeve presenting coupling means at the outer eid thereof; a centering part, a flexible sealing a valve seat part within said sl of said coupling means; said sealing w c presenting a flat base portion held between said centering part and the outer end of said val seat part, means presented at the outer end of saio. valve it part to pr "ent cutting oil? tie base portion of said iv v he V sq..e d between the eni'l of said va' part and u cent ""ng and enacting i th said. valveseat part,

l Rant-expelling device l a having a 110.2 coup" g means at the o a a; u t said sealing washer pree portion held betv d 7 -t and the outer ondofsc seat pv an annular nzrt'surron the peri ery of the base of said so; Washer to li a;

:t the amount which the base of said sealing part may be compressed between said centering part and the end of said valve seat part.

7. i-L high pressure lubricant-expelling device comprising, in combination, a barrel presenting a reduced end portion, means for expelling lubricant from said barrel, a valve carrying part partly located within the reduced end portion of said barrel, a valve seat part seated against the end of said valve carrying part, a coupling sleeve secured to the reduced end of said barrel for holding said valve seat part and said valve carrying partin assembled relation with said barrel, a relatively large closure valve seated against said valve seat part adjacent the outor end of said valve carrying part, a check valve located at the inner end of said valve carrying part, a spring interposed between said valves, and means forming a chamber be ween the seats for said valves, from which lubricant may be expelled under a relatively higher pressure than the lubricant may be expell d from said barrel.

8. A high pressure lu ricant-expelling d,- vice comprising, in combination, a barrel liesenting a reduced end portion, means for expelling lubricant from said barrel, a valve carrying part partly located within the reduced end portion or" said barrel, a valve seat part seated against the end of said valve carrying part, a coupling sleeve secured to the reduced end of said barrel and holding said valve seatpart and said valve carrying part in assembled relation with said barrel, a chamber within said valve carrying part having a relatively smaller cross-sectional area than said barrel, a check valve located between said chamber and said barrel to permit flow of lubricant only from said barrel to said chamber, and a closure valve and means associated therewith for holding the same normally seated against said valve seat part adapted to be opened by the end of a lubricant receiving nipple to permit passage of lubricant from said chamber to the nipple.

9. A high pressure lubricant expelling device comprising, in combination, a barrel presenting a reduced end portion, means for expelling lubricant from said barrel, a valve carrying part partly located within the reduced endL portion of said barrel, a valve seat part seated against the end of said valve carrying part, a coupling sleeve s cured to the reduced end of said barrel and holding said valve seat part and said valve carrying part in assembled relation with said barrel, a chamber within said valve carrying parthaving a relatively smaller cross-sectional area than said barrel, a check valve located between said chamher and said barrel to permit flow of lubricant only from said barrel to said chamber, a closure valve and means associated therepotential pressure, and sealing means ca' with for holding the same normally seated against said valve seat part adapted to be opened by the end of a lubricant-receiv' nipple to permit the nipple to force cant from said chamber at a relatively hi ried by said sleeve effective to seal d oint between said sleeve and nipple prior to opening of said valve.

10. A lubricant-expelling gun having a barrel provided with manual i operated tasplacement means for iorc' 1g lubricant therefrom, a coupling means 1' ronnecting said barrel to a nipple, conduit means connecting said barrel and coupling means, spaced valve seats for said conduit means, valves for said seats, and a single spring for ur ing said valves toward their seats, one e permitting flow of lubricant only from said barrel toward said coupling means and the other being opened by the nipple when operatively engaged by said coupling means.

11. A lubricant-expellin gun having a barrel provided with manually operated dis-- placement means -tor forcing lubricanttherefrom, a coupling means for connecting said barrel to a nipple, conduit means connecting said barrel and coupling means, spaced valve seats for said conduit means, valves for said seats, and a single spring for urging said valves toward their seats, one valve permitting fiow o1 lubricant only from said barrel toward said coupling means and the other being opened by the nipple when operatively engaged by said 7 coupling means, and sealing means for the joint between said coupling means and nipple, said sealing means effective to seal said joint prior to opening or said valve by the nipple.

12. A lubricant-expelling gun having a barrel provided with manually operated displacement means for forcing lubricant "from said barrel, a cup shaped member the bottom wall of which is perforated to receive the lubricant expelled from said barrel, a part having a perforation closing the opposite end of said member, a pair of valves in said member, a spring engaging said valves for urging them to seat respectively on said bottom wall and on said part for normally closing the perforations in said bottom wall and part, a coupling for connection to a nipple, said nipple when operatively engaged by said coupling opening said valve normally seated. on said. part.

13. A lubricant-expelling gun having a barrel provided with manually operated displacement mean for forcing lubricant from said barrel, means forming a chamber having a port at one end for receiving the lubricant expelled from said barrel and a port at the opposite end for exit or" lubricant from said chamber, means torming valve at associated. ith sai ports, a pair of gnu i 1 said chamber, a single compresn spring engaging said valves and urging rlieni toward said for normally closing; said ports, a coupling means forwardly 0% said chamber for connection to a nipple, said nipple when operatively engaged by said coupling means opening the valve n01- inally closing; the exit port of Sfllfl chamber.

14. A lubricant-expelling gun having Jamel pi'ovielecl with manually operated displacement means for forcing lubricant from said barrel, means forming a ClELlE'llJlJ having at opposite ends a valve controlled inlet port for receiving the lubricant eX- pellecl from said barrel and a valve controlled exit port for the lubricant expelled from said chamber, relatively movable valves for saicl ports, a Sll 9,.l6 compression spring in said chamber urging said valves 1 rel closed position, coupling means forwardly of said clian'zlics For connection to a nipple, said nipple when queraiively received by saicl coupling); means positively opening the valve controlling said exit port.

In testimony whereof, I have signed my name to this specification.

HOVIARD J. MURPHY