US1763062A - Lubricating apparatus - Google Patents

Description

June 10, 1930., H. J. MURPHY 1,763,062

LUBRICATING APPARATUS Filed Feb. ll, 1925 V @ff/agi @y Ew,

irl/aras HOWARD J'. MURPHY, OF READING, MASSACHUSETTS,"ASSIGNOR, BY MESNE ASSIGN- MENTS, T ALEMITE CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE LUBRICATING APPARATUS Application filed February cross-section Fig. 3 is an enlarged section of the discharge end of theM gun shown fully engaged with the nipple through which the barrel of the gun is filled; v

Fig. 4 is a fragmentary section of the barrel of the gun. showing the piston being pushed forward by the stem; and'` Fig. 5 is a section on the line 5-5 of Fig. 3, showing the perforations through which the lubricant passes to the nozzle.-

Referring to the drawings, I .have shown a simpliied form of lubricant-eXpelling-gun. which may be easily assembled and disassembled and which may be lled with lubricant through the nozzle, withoutI disassembling any of the parts.

The apparatus for filling the gun illustrated in the drawings may be the same as that more fully illustrated andfdescribed in my co-pending application Serial No. 8,584, filed herewith. f

The preferred form of lubricant-expelling gun includes the -usual form of barrel 1 hav-- ing a rea'r head-2 into which is threaded .a stem' 3 having, outside the barrel, a handle 4 for feeding the stem relative to the head 2. Withinthe barrel, the stem carries a disk 5 which provides a guide for the stem. The plunger 6. which is of the usual form, is

separate from the stern. Thus the stem'is only used to move the plunger` 6 toward the discharge end ofthe gun to feed the lubricant thereto l(Fig. 4).

The discharge end of the barrel 1 is drawn out to a reduced portion 7, which is threaded internally and externally for engagement with the parts of the nozzle. A nozzle sleeve 8 is secured to the external threads as illus- 11, 1925. seriai No. 8,587.'

trated in Figs. 1 and 3, and presents female coupling threads 10 forfcoupling engagement with male threads of the lubricantreceiving nipple (not shown) and male threads 13 on the nipple 14 located on the head 15 of the supply tank 16 (Figs. 2

- and 3).

Al closure valve unit comprising a valve seat part 17, a valve 18, a disk 19 and spring 20, is threaded into the reduced end portion 7 The threads for the valve part may be eliminated, if desirable.` Thisl valve unit is completely-'assembled before assembly with p the rest of the gun, the disk forming a seat for one end of the spring 20 and being provided with holes or perforations 21 through which the lubricant may pass.

/ The usual hat-shaped sealing. Washerv 22 and centering part 23 are held between the outer end of the valve unit and a shoulder 24 back vof the female threads 10, as illustrated in Figs. 1 and ,3f If for any reason, the valve fails to work, the valve unit may be disassembled from the reduced end portion by first removing Lthe nozzle sleeve 8.

The valve unit may thenbe repaired or a new one inserted inits placeall lof which can be effected very easily and quickly Without the a'id of a skillful mechanic.

Assuming the gun barrel l to be empty, as illustrated in Fig. 1, the method ofgelling is as follows. First, the stem may b retracted by spinning the handle 4 in a. lockwise direction. `This may be accomplished by hand or by theusejof thedevice illustrated and described lin the above-mentioned application. The relation of parts of the gun will then be as illustrated in Fig. 1. Next, grasp the barrel 1 and engage the nozzle over the end of the nipple 14 presented by the supply tank as shown in Figi. 2. Further turning of the barrel will engage the coupling threads 10 and 13, thereby drawing the gun toward the nipple 14,-which engages theend of the closure valve 18 and moves it way from its seat. Before Afull coupling Vengagement has been accomplished, the valve 25 in the nipple 14 will be opened and lubricant may then flow through the passage 26 in the end of the valve 2 5 through the slot 27 in the end leo of the valve 18 past the valve seat and through the perforations 21 (Fig. 5) in the disk 19 to the barrel 1. The pressure. of the lubricant acts against the plunger 6 to move it toward the rear end of the barrel, thereby permitting the barrel to fill with lubricant. The air in the barrel 1 'behind the plunger may be forced out-through the threads on the stem with very little resistance, thereby requiring less pressure on the lubricant than when the air has to be forced by the plunger before the barrel may be filled asis the case When the plunger is secured to the stem.

The spring 28, which normally closes the Valve 25, is stronger than the spring 20, thus permitting the valve 18 to open before the valve 25 opens, and conversely closing the valve 25 to cut olf the supply of lubricant before the closure valve 18 closes.-

While I have shown and described a'preferred embodiment of my invention, it will be understood that changes involving omission, substitution, alteration and reversal of parts, and even changes in the mode of operation, may bemade without departing from the scope of my invention, which is best defined in the appended claims.

Claims.

1. A lubricant-expelling device comprising, in combination, a supply barrel presenting aA reduced front end portlon, a nozzle sleeve secured to said reduced end portion, said nozzle sleeve having means for .making a quick detachable connection with a lubricant receiving nipple and a closure valve unit enclosed by said reduced end portion and said sleeve, said valve unit removable completely assembled from said reduced end portion pursuant to the removal of said nozzle sleeve.

2. A lubricant-expelling device comprising, in combination,a supply barrel presenting an integral reduced front end portion, a nozzle sleeve having means for makingaquick detachable connection with a lubricant receiving nipple and secured externally to said relduced end portion and an inwardly opening closure valve unit comprising a valve seat lpart, a disk secured to one end of said valve seat part and a spring interposed between said disk and said valve normally to close said valve against its seat, said valve unit secured to said reduced end portion and removable therefrom pursuant to the removal of said nozzle sleeve from said reduced end portion. 3. .A lubricant-expelling device compris- 1ng, 1n combination, a lubricant supply barrel having at one end thereof a reduced end portion interiorly and eXteriorly threaded, a

coupling sleeve presenting internal threads Y engaging the external threads of said reduced end portion, and a -completely assembled closure valve unit presenting exterior threads engaging the interior threads of said reduced end portion, said valve unit being protected by said sleeve.

tion, a' valve seat part, an inwardly opening valve held against said seat by a spring, and a perforated disk rigidly secured to one end of said valve seat part to provide a seat for one end of the spring, and to hold said spring and valve in assembled relation with said valve seat part in such manner that the Valve unit. cannot be tampered with.

5. Lubricating apparatus comprising, in combination, a lubricant compressor having a barrel, an imperforate leather sealing plunger reciprocable in said barrel, a metal disc secured at one surface of said plunger having a ball socket formed therein, and a screw handle foradvancing said plunger having a ball formed on the end thereof fricbarrel, a metal disc securedl thereto having a spherical depression therein, and a handle provided with a ball on one end frictionally to engage the spherical depression in the metal disc to control the advance of the plunger thereby to cause the egressl of lubricant, said plunger being adapted to be automatically moved to the rear of said barrel by the ingress of lubricant when said handle is in a retractediposition.-

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

HoWAi-in J. MURPHY.

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