US2118451A - Nozzle - Google Patents

Description

May 24, 1938.

F. E. HANSEN NOZZLE vFiled Aug. 50, 1955 ATTORNEY5 mmR Patented May 24, 1938 NOZZLE Fred E. Hansen, Lakewood, Ohio Applicationl August 30, 1935, Serial No. 38,597

7 Claims.

This invention relates to lubricating devices and, more particularly, to oilers having a force pump therein for discharging the oil, under pressure, in the form of spray or a stream.

In devices of this kind, it is customary to have a nozzle that is provided with a relatively small orifice through which the oil is discharged, and trouble is had with these devices on account 01' the orifice becoming clogged with sediment or other material. It has been customary to free the orifice, when it has become clogged, by forcing therethrough, from the exterior, a wire or pin, but the objection to this is that it merely pushes the clogging material back into the nozzle and it soon gets into the orice again and stops the flow of cil. To overcome this diculty, have provided a nozzle having a device therein which forces the clogging material outwardly and which is always available to do this by simply giving the oiler a quick snap or throwing motion.

A further object is to provide an oiler that is adapted to discharge the oil in the form of spray or a stream. f

A further object of theinvention is to provide an improved form of pump that will be simple in construction and relatively inexpensive so that the whole device may be sold atV a moderate price. v

Other objects of .the invention and the features of novelty will be apparent from the following description, taken in connection with the accompanying drawing, of which Fig. lis a composite view, partly in elevation and partly in section, of an oiler embodying the features of my invention;

Fig. 2 is an enlarged longitudinal section of the discharge end of the nozzle showing my orice-cleaning device in operative position;

Fig. 3 is a detail section on theline r3 3 of Fig. 1;

Fig. 4 is an enlarged longitudinal section of a modied form of the nozzle shown in Fig. 1;

Fig. 5 is a side elevation of the nozzle head shown in Fig. 4; and

Fig. 6 is an end elevation thereof.

Referring to the drawing, I3 indicates a reservoir in the form of a can having a threaded neck II at its upper end to which a pump barrel I2 is secured, a gasket I3 being provided to prevent leakage. The pump barrel I2 has a pistol-grip handle I4 on one side and an `extension I5, opposite to the handle.

A piston I5 is arranged in the bore I'I of the pump barrel and a screw plug I8 closes the upper end of the bore il'. A piston rod I9 is secured to the piston I5 by the screw threads 2IJ, and is provided with a button 2i at its upper end which may be conveniently engaged by the thumb of the operator., and the piston thereby depressed, as will be described hereinafter.

The pump barrel I2 is provided with the internal threads 22 at its lower end and a suction K tube 23, having an enlarged upper end 24, is secured to the threads 22. A gasket 25 is arranged between the enlarged upper end 24 of the suction tube and the shoulder 26 in the pump barrel. The lower end of the suction tube 23 is enlarged as at 27 and provided with a cap 28 which has a screw threaded connection therewith, the cap carrying a screen 29 which is located close to the bottom of the can II).

The enlarged upper end of the suction tube, is provided with an internal shoulder 30 on which an inverted cuplike member 3I rests, this member being provided with an opening 3| at its upper end and a flange 32. A coil spring 33 is arranged between the piston I6 and the flange 32, the lower end of this spring surrounding the member SI, as shown. 'I'he spring 33 serves to return the piston I6 to the upper end of the bore I1, after it has been released by the operator. There is a valve seat 34 at the upper end of the suction tube 23 and a ball valve 35 cooperates with this seat and is held thereagainst by the spring 36 Within the member 3|. A discharge port 31 extends longitudinally of the pump barrel I2 and, at its upper end, turns at right angles in the extension I5, as shown at 38.

The extension I5 has a bore 39 at the inner end of which there is a valve seat 4I) for the ball valve 4I, which is held against the seat by a spring 42, the outer end of this spring being engaged by the hollow nut 43. The outer end of the extension I5 is provided with the external threads 44 to receive the nut 45 by means of which the nozzle 4S is secured to the eXtension. A gasket 4l is provided between the end of the nozzle 46 and the end of the extension I5 to prevent leakage at this point.

The nozzle 26 comprises a head 48 which has a screw threaded connection with the nozzle tube, as indicated at 49, and the end Wall of this head has a central orice 50.

At the outer end of the nozzle tube there is a head 5I which has a screw threaded connection 52 therewith, and this head is provided with a restricted discharge orice 53 the opposite ends of which are preferably flared, as indicated at 54. and 55.

Arranged within the nozzle tube is a rod 55 having a needle-like extension 51 on its outer end which is surrounded by a tapered coil spring 58, as shown. The outer end convolutions of the spring 58 lit loosely within the nozzle tube but serve to hold the extension 51 in alignment with the orifice 53. The inner end of the rod 55 is also, by preference, provided with a coil spring 59 which is adapted to engage the end wall of the head i8 to cushion the blow of the rod against the end wall when the rod moves inwardly in the nozzle tube. It will be noted that the rod 56 is considerably shorter than the distance between the opposite ends of the nozzle so that it will be capable of considerable longitudinal movement therein.

In using the device, the operator presses downwardly on the button 2l and this movement forces the oil, in the pump barrel, out through the port 31, .past the check valve 4l, and through thel nozzle, from whence it is discharged through the orifice 53. If the orice 53 becomes clogged, the operator simply tilts the device to point the nozzle upwardly and then, by a quick, downward, snapping movement, causes the rod 56 to be thrown to the outer end of the nozzle where the spring 58 engages the head 5|, the inertia of the rod causing the spring to be compressed and permitting the extension 51 to pass through the orice 53, as shown in Fig. 2. The spring 58 will then expand and withdraw the extension 51 from the orifice. From Fig. 1 it will be noted that the free length of the spring 58 is such that the extension 51 is normally held out of the orifice 53.

When the operator releases the button 2 l, after having depressed the piston I6, the spring 33 will move the piston to the upper end of its suction stroke and cause the oil to be drawn upwardl7 through the suction tube 23, past the check valve 35, and into the bore l1. The piston l5 may then be again depressed and the oil forced out of the bore l1 through the nozzle, as previously described.

It is necessary to provide a vent for the reservoir i8 so that air will be admitted thereto as the oil is Withdrawn and such a vent is shown in detail in Fig. 3. A lug 50 is provided on the side of the pump barrel i2 and has a bore 81 and a vent opening 62, a valve seat 53 being provided at the inner end of the vent opening 52. A ball valve Bil is normally held against the seat 53 by the spring S5 which is backed up by the plug 85, and this plug has a longitudinal opening therethrough, as shown. The spring 65 is very light but sufiiciently strong to hold the ball 84 normally against its seat. However, when there is va slight vacuum within the reservoir l0, due to the withdrawal of oil therefrom, the ball valve E@ will open and admit air.

In the form of the invention illustrated in Figs. 4, 5, and 6, the extension 61, which corresponds with the extension l5 of the construction illustrated in Fig. 1, is internally threaded as at 58, to receive the hollow nut 43 and the nozzle tube 59. A hea-d 18 is secured on the outer end of the tube 69 by means of the screw threads 1l and is externally screw threaded as indicated at 12 to provide means formounting the rotatable cap 13 thereon. The cap 13 has a restricted discharge orifice 14 at its outer end and a conical passage 15 leading thereto. The outer end of the head 18 is reduced in diameter, as indicated at 18, and has a conical surface 11 which cooperates with a complementary surface 18, on the interior of the cap 13, to form a valve.

The head 18 has a small opening 19 in alignment with the orifice 14 and the passage 88 leading thereto. 'Iransversely extending ports 8l establish communication between the passage and the annular chamber 82 that is provided between the head 18 and the cap 13. One of the surfaces 11 or 18, preferably the surface 11, for convenience of manufacture, is provided with small tangentially extending grooves 83, for a purpose to be later described.

At the inner end of the cap 13 there is a stufling box comprising the washer 811, the packing 85, and the gland 86, and this stuiing box prevents leakage along the surface of the tube 69.

Within the outer end of the tube 88 there is a slidable cup-shaped member 81 which carries the needle-like member 88, this member being surrounded by the coil spring 83, of which the member 19 may be an axially arranged integral extension. The outer end of the spring is seated in the passage 88 and the member 81 is normally held against the shoulder 98, in the tube 69, which acts as a stop to limit the inward movement of the member 81. An orifice 9| is provided in the end wall of the member 81 for the passage of uid from the tube 59. A rod 92 having the cushion springs S3 at its opposite ends, is slidably arranged in the tube 39 between the nut 43 and the member 81.

The needle-like member 88 closely nts the opening 19 so that there will be very little flow of fluid through the opening but, at the same time, the member 88 is free to move axially in this opening. The member 88 acts as a cleaner for the orice 14 and, when the oriiice becomes clogged, the operator gives the oiler a quick snapping movement which will throw the rod 92 against the member 81 and drive the latter outwardly, and thus force the member 88 through the orice 1li. The spring 89 then returns the member 81 to the position shown in Fig. 4:.

When the surfaces 11 and 18 are in engagement, as shown in Fig. 4, the fluid will be forced through the tangential grooves 83 and thus give a whirling motion which will cause the iuid to issue from the orifice 14 in the form of a spray. By turning the cap 13 a partial revolution, the surfaces 11 and 18 may be separated, thereby opening the valve formed by these surfaces, and then the fluid will issue from the orifice 14 in the form of a fine stream, so that the nozzle may be conveniently used whenever desired for producing a spray or a stream as the operator desires.

While I have illustrated and described what I now consider to be the preferred form of my invention, it is apparent that modifications may be made in the details of construction that have been illustrated and described, without departing from the spirit of the invention as dened in the appended claims.

I-Iaving thus described my invention, I claim:

1. In a device of the class described, a nozzle having a restricted discharge orice, an element loosely arranged in said nozzle and normally free to slide longitudinally therein in either direction, said element having an end portion adapted to enter said orifice and free the latter of any obstructions therein, and said element also having a compressible member attached thereto and surrounding said portion which normally prevents said portion frorn entering said orifice but which upon being compressed permits said portion to slide through the orifice. 4

2. In a device of the class described, a nozzle to slide in said nozzle and having a needle-like extension at one end adapted to pass through said orifice, and springs attached to the opposite ends of said rod with one of said springs surrounding said extension.

4. In a device of the class described, a nozzle having a restricted discharge orice, a rod free to slide in said nozzle and having a needle-like extension at one end adapted to pass through said orifice, and springs attached to the opposite ends of said rod with one of said springs surrounding said extension and said springs being of such size as to slidably t within said nozzle and maintain said extension in alignment with said orifice.

5. In a device of the class described, a nozzle having a restricted discharge orifice, a rod loosely arranged in said nozzle and normally free to slide longitudinally thereof in either direction, said rod having a needle-like extension adapted to pass through said orice, and spring means Which normally maintains said extension away from said orifice but adapted to be compressed by said rod to force said extension through the oriiice to remove an obstruction therefrom.

6.. In a device of the class described, a nozzle having a restricted discharge orice, a member slidable in said nozzle and carrying a needle-like element adapted to be projected through said orice, means for normally holding said member in a retracted position with said element free from said orice, and a member freely and inde-v pendently slidable in said nozzle and adapted to strike the first mentioned member to actuate the latter and force said element through said orifice.

7. In a device of the class described, a nozzle having a restricted discharge orice, a needle-like element positioned in said nozzle in alignment with said orifice, a spring which normally holds said element in retracted position away from said orifice, and a member loosely arranged in and freely slidable longitudinally of said nozzle in either direction and adapted, upon a quick snapping movement of said nozzle, to be projected toward said orifice and effect the compression of said spring and force said element through said orice.

FRED E. HANSEN.

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