US909740A - Pneumatic-tool lubricator. - Google Patents

Description

J. C. BBGKPIELD.

PNBUMATIG TOOL LUBBIGATOR.

rrLroA'rIoN runnin. as, 190s. nmsmwnn nso. 1s, 1907.

909,740. Patented Jan. 12, 1909.'

3 BREWER-SHEET 1.

J. C. BBCKFIELD. PNEUMATIG TOOL LUBRIGATOR. Arrmcu'ron FILED MAB. 2s, 190e, nmmwxm DB Patented Jan. 12, 1909 3 SHEETS-SHEET Z Wifwksses: WU

J. C. BBGKFIELD. PNEUMATIG TOOL LUBRIGATOR. APYLIUATION FILED Mums, 1903. BBNEWBD DBO. 16, 1907.

909,740. Patented Jan. 12, 1909.

3 SHEETS-SHEET 3.

W/ifzesses.' @10622250 UNITED STATES PATENT OFFICE.

JOHN C. BECKFIELD, OF PlVPSB'URG, PENNSYLVANIA..

PNEUMATIC-TOOL LUBRICATOR.

Application led larok 26, 1903, Serial No. 149,633.

To all whom 'it may concern:

Be it known that I, JOHN C. BECKFIELD, a citizen of the United States, residing at i Pittsburg, in the county of Allegheny and j Sta-te oi Pennsylvania, have invented a new and useful Improvement in Pneumaticflool Lubricators, ot which improvement the following is a specification.

My invention'relates to degices for oiling l or' lubricating pneumatic tools.,

Tin object of my invention is to produce an iler which is adapted to be arranged bei tween a source of air supply and a pneuniatically operated tool, or 1n the air circuit of a pneumatic topl, in such manner that a modi'cum of the lubricant is taken up and carriedrby the air to' the operative parte of i the tool. In one form of my device, air is i to be passed into the'lubricant reservoir and 3 returned-to the main supply pipe, in its rei turn passage car in to the operative parts of the tool a regu ate quantity of lubricant. i In another form of my device the lubricant is fed by capillary attraction to the air condliit at a point approximutin the median i line of volume of the vessel, an then carried by the air to the operative parts of the tool. i

, To accomplish these objects my invention consiste 1n then novel constructions` and arrangements of parts hereinafter `more specifically described, reference being had to the accompanying drawings, forming part hereof, in Which- Figure 1 indicates a central longitudinal 1 section oflny improved automatic oiler. Fig. l 2 is a transverse section through the center l thereof. Fig. 3 is an end view of the thimble. l Fig. 4 is a plan view of a modified form of diaphragm, one section ofthe lubricant vessel being removed. Fig. 5 is a longitudinal seoj tion of the saine. Fig. 6 is a section through i the valve on line eea/.- ot Fig. 5. Fig. 7 is* an enlarged sectional detail of modified forni of feeder. F ig. 8 is an elevation of oiler and pneumatic tool connected. Fi 9 is a secj tional View of modified form ci; reservoir.

l Like reference characters indicate like parts 5 wherever they occur. i Referring to said drawings, A is a pneuj matic tool; B is :1 section of hose connecting l the same with' the automatic luhricutor C, and D is a port-ion of the airsupply pipe. g, It will be observed that the oiler is in the air i circuit of the tool', and that the oil` or other i lubricant is charged therein to a point below l the median line of the vessel so that in what- Specifxcation of Letters Patent.

Patented J'an. 12, 1909.

Renewed December 16, 1907. Serial No. 406,766.

ever position the tool may be placed, or the oiler relatively thereto, the oil or other lubricant is prevented from oozing or leaking into [he air passage or tube but is conveyed or carried hy the air to the working or operative parts of the tool A, in regulated quantities as hereafter specified. The said lubricater comprises a vessel or reservoir, of any suitable form, preferably formed in two sections, 1, 2, and arranged or disposed in the air circuit of the tool at a suitable distance therefrom. Section l is provided with an outwardly projecting threaded flange 3, which is adapted to be screwed into the annular threaded groove 4, formed in the outwardly projecting flange 5 of section 2. The edge of said flange 3, adjacent to the corresponding edge of flange 5, is provided with a recess o to receive the edges of the perforated plate 7, which divides the interior of the vessel.

Section l. is provided with an inwardly projecting threaded tube 8, the opening in which is in alinenient with the air supply opening t), formed in the boss 10 projecting from the side of section Q. Immediately opposite said boss a similar boss 11 is formed on section 1, and section 2 is likewise provided with an inwardly projecting tube 12 provided with a passage 13 in alinement with both the air supply and dischargeV openings 9 and 14. The said sections when assembled constitute a single chamber, the opposite sides of which are provided with contracted bores or orifices for the attachnicht of the adjacent ends ot' air supply pipe l) and pipe or conduit B, respectively, with said chamber, the tube 15, the ends of which are located in said contracted bores,

1 constituting, in conjunction with said bores,

the continuous pipe or conduit leadin:y through said chamber. The inner ends oi' the tubes n' and 1Q are enlarged forming!I a shoulder in the passage, and a scat for ine connecting. adjusting and regulating tube l5, which projects therein, said tube being adapted for regulation of the air supplied to the vessel C and the oil carried from the vessel to the air pipe, one end of said tube l5 being screw threaded und screwed into the threaded portion of tube S. The said tube l5 is cylindrical in cross section; the threaded end and a portion of its regulating end are cut to leave spaces o, b and c between the outer Wall of said tube 15 and the inner'wall of the tube 8, in which said tube 15 projects; said tube 15 is made smaller in the inner diameter than the inner diameter of tubes 8 and 12 for the purpose hereinafter specified. The other end is cut to foi-m taper passages for the admission of air to the oil reservoir. 1G and 17 are thimbles mounted on the tubes 8 and 12 and are of slightly greater diame ter than said tubes and 12 so as to form a space d d between the inner walls of said t imbles and the outer surfaces of the tubes, for the purpose of better regulatin the introduction of lubricant to the flui motive passage, also of preventing the possible introduction of any organic substance to the passages into the motive iuid or air passage. The inner ends of the thimbles are provided with inwardly projecting flanges which snugly fit upon the cylindrical part of tube 15 at the point where the tubes 8 and 12 approximately meet, and their outer ends with notches 18 and 19 to enable oil or other lubricant to enter the space d d, between the outer surfaces of the tubes and the inner walls of the thimhles. Section 1 is provided with a boss or projection 20 in which a socket 21 is formed, a assage 22 from said socket to the interior o the vessel being provided to charge or fill the same, and a similar passage 23 to exhaust the air from said vessel. The socket is adapted to be closed by a. plug, and the passages, particularl the oil charging passage, are arranged elow and angularly disposed with relation to the median line of the vessel, when the same is held iii chariging position, so as to prevent zhe filling o said vessel up to said median ine.

In Fi s. 4, 5, and 6 I show a modified form of my eviee, in which the vessel or reservoir is formed of two sections A' and B-, which are secured together by screws or bolts. Each of said sections is provided with internally projecting tubes 8', 12', which are connected by an internally disposed thimble or tube 15'; the inner ends of said tubes 8' and 12', res eetively, being enlarged to receive the en s of said tube 15 whereby a continuous passage is formed between the supply and discharge openings 9' and 1v1', respectively. An internal centrally disposed diaphragm 7', having a central opening or orifice, which surrounds the connecting tubes 15', divides the interior of the vessel into two compartments, and is perforated so as to permlt the contents of the vessel to more or less freely pass from one compartment to the other. The tubes S' and 12', respectively, have loosely mounted thereon thimbles 16' and 17'. The s upply opening of said vessel is controlled by a. two-way valve, 24, which contains a port to admit air through the continuous passage of the tubes or conduit, and also a port to replenish the vessel with oil or other lubricant. Normally the air port of said valve is open and the port to replenish vthe vessel closed. i

In Fig. 7 I show a modified form of the lubricant feeding apparatus, in which, between tlie loosely mounted thiinbles 16" and 70 17", I insert the absorbent material, desigi nated by the reference character 21', which covers t e inwardly rejecting air tubes 8"' and 12" and said a sorbent material feeds or conveys the oil or other lubricant to the i interior of the air passage in the manner `similar to a wick.

ln Fig. 9 I show a modified form of lubricant reservoir, which, instead of being spherical in form, is oblon or substantially o long` and is subdivided y interiorly disposed funnel shaped cups, 22', 22', the sides of which are perforated. This form` of reservoir is formed in two sections A2, B2, and the interiorly disposed tubes 8" and 12", respectively, approximatel coincide in depth with either section, an when said sections are secured together form a continuous passage through the interior of the vessel. The supply opening is controlled by a valve similar to that shown in Fig. 5, and. the funnels subdividing the vessel interiorly are perforated so that more or less free communication is obtained between the different com artinents.

Tie funnel shaped cups 22' 22' serve to feed the lubricant to the openings which are shown approximately on the median line of the vessel; and when the a paratus is shifted into any other position t ian that shown in Fig. 9, the oil by gravity will ,be fed down the inclined cups 22', 22', to said o enin and as a matter of course the oil wou d shi correspondingly with the position in Ywhich the apparatus was held. The agitation of 105 the apparatus when in actual use also causes a small quantity of the lubricant to be fed or carried by the inclined cups, as shown in F ig. 9, to the median line of the vessel and from thence to the operative parts of 110 the neiimatic tool.

T ie operation of my device is as followsz-The reservoir or vessel bein char ed with any suitable lubricant, to a point be ow the median line of the vessel, and the oiler 115 being inserted or placed in the air circuit of a pneumatic tool or similar device, or between a source of supply of air and the tool to be lubricated as shown in Fig. 8, air is admitted to the air supply opening 9, assum- 120 ing that the air is traveling 1n that direction, and passing through the passage 13 im pinges against the shoulders formed at the jnjiction of said passage 13 with the end of tube 15, and passing therearound enters the 125 s ace passages (1.', enters the space between tlie thimble 17 and the tube 12, and thence through the notches 19 in said thimble'17 into the reservoir. On its return passage to 4the motive Huid passage, the air enters the 130 space between the thimblc 16 and the tube 8 through the notches 18 into the taper. passages c, l, c, into the motive fluid passage, .vliere it is taken up by the continuous flow of air to the tool being lubricated, the air which entered they reservoir carrying with it on its exit. passage. a portion of the lubricant contained therein,

It may be observed that the tube 15 is of smaller interior diameter than that of the inner diameter of the tubes 8 and l2 thus causing u more or less throttling action or slight interruption ot' the air at the entering ond ot tube iii causing a portion of the air lo be directed into the oil coi'npartment of the` vessel, while the action of the air as it .discharges from the tube at the exit end thereot' 'is that of n siphon, causing a suction on the ports at that portion and consequently drawingfroui the vessel the air previously forced into it by the pressure consequent on the throttliug` fiction at the entering end of tube It` will be ol'iserved that the point of inglress and egress ol the portion ol air diverted into 'the reservoir is preferably located at the point coincident with the median or near the median line of the vessel, and coincident with the level of the lubricant that may be contained therein when the oiler is heid in a position that would throw the motive fluid passages in a vertical plane. This is for the purpose of preventing oil escaping into the motive fluid passages when the air is shut oil' and the vessel accidentally held in the position indicated.

il claim as my invention and desire to secure by Letters Patent:

l. An oiler comprising a vessel adapted to contain lubricant having an uninterrupted centrally disposed passageway therethrough for the passage of air, ducts located at a point slightly above the maximum level of the lubricant when the passage is vertically disposed, communicating between the receiver and said motive fluid passage for the ingress of air to said reservoir and its egress there from, whereby the passage of air through said reservoir feeds a portion of the lubricant contained in said reservior to the motive fluid passage. and means to prevent the dis charge of lubricant from said reservoir except when carried therefrom by the passage of air therethrough.

2. An oiler comprising a vessel adapted to contain a lubricant and having an uninter rupted passage centrally disposed there through for the passage of motive fluid, means to luy-pass or divert a portion of said fluid into the body portion of said vessel, andfmeans to enable the return of said di verted motive fluid to said motive fluid passage, whereby a portion of the lubricant is constantly carried by the diverted motive fluid into the said motive fluid passage and from thence to the operativo parts ol u motor connected to said oiler.

3. An oiler comprising a vessel having' a chamber adapted to contain a lubricant, a motive fluid conduit extending through the vessel and surrounded by the lubricant' chamber, and means adapted to ily-pass or divert a portion of the motive fluid from` the conduit into the chamber and hack into the motive tluid conduit` whereby the diverted portion ot the motive tluid continuously introduces a portion ot the lubricant into the motive fluid conduit to he carried along b v the motive tluid.

4. An oiler comprising a vessel having i chamber adapted to contain :i lubricant, :i motive tin-"d conduit extending through the vessel and surrounded by the lubricant cham ber, means to cause a portion of the air to pass through said air passage to said reservoir, means to cause the air to return to said passage from said reservoir, and means to prevent the discharge of oil from said reservoir except by the passage of said air.

5. An oiler comprising a vessel having a chamber adapted to contain a lubricant, in-

ternally projecting inlet and outlet tubes within the vessel, and an independent tube connecting the inlet and outlet tubes and adapted to admit the lubricant thereto.

t). An oiler comprising a vessel having a chamber adapted to contain a lubricant, internally projecting inlet and outlet tubes Within the vessel, and an independent tube telesco Jing with the inlet and outlet tubes and adapted to admit the lubricant thereto.

i'. An oiler comprising a vessel having a chamber adapted to contain a lubricant, internally projecting inlet and outlet tubes Within the vessel, and an in ependent` connecting tube inserted in the ends of the inlet and outlet tubes and adapted to admit the lubricant thereto.

8. An oiler comprising a vessel having a chamber adapted to contain a" lubricant, 1nternally p'rogecting inlet and outlet tubes Within the vessel and having their inner ends located contiguous to euch other, and a perforated partition dividing the vessel into compartments which has a portion l0- cated between the contiguous ends of said inlet and outlet tubes. i

9u An oiler comprising a vessel having a chamber adapted to contain a lubricant, internally proJecting inlet and outlet tubes Within the vessel, thimbles surrounding said tubes, and another tube connecting the inlet and outlet tubes.

10. An oiler for meumatic tools comprising a vessel provided with internally projectirtg inlet and outlet tubes, and an adjustable tube connecting saidinlet and outlet tubes and adapted to regulate the quantity of lubricant admitted thereto.

11. An automatic oiler for an air feed pipe comprising a reservoir having its chaniber provided with contracted bores for the attachment of adjacent ends of air-feed pipe scctiona, a tube leading through the chamber having its ends located in Said contracted bores and ducts for opening communication from the chamber to the air feed pipe sections at the opposite ends of the said pipe.

12. An automatic oiter for an air feed pipe comprising a reServoir having its chamber provided with contracted bores for the attachmeiit of the adjacent ends of air-feedpipe sections, a tube leadingithrough the chamber having its ends located in said contracted botessA and ducts in the exterior walls of the ends of the tube for opening communication from the chamber to the air-feedpipe sections for permitting the escape of oil at one end of the tube and the admission of air at the other end of the tube.

13. An automatic oiler for an air feed pipe comprising a reservoir having its chamber t provided with contracted bores for the attachment of the adjacent ends of the airfeed-pipe sections, a tube leading through the chamber having its ends fitted to the said bores, there being ducts for opening commiuiication between the chamber and the air-feedpipe sectioiia at the opposite ends o1"- the tube for permitting the.escape of oil in smal] quantities at the other end of the tube and an air-tight Filling-cup for the Said chamber.

14. An automatic oiler for an air-feed pipe coinprisii'ig a reservoir having its chamber provided with contracted bores for the attachineut oi the adjacent ends of the airfeed-pipe sections, a tube leading through the chamber having` its ende fitted to the bores and ducts at the opposite ends of the tube for permitting the escape of oil from the chamber at the one or the other end of the tube according to the direction of `ioiv ot air through the air-feed pipe and the admission ot air 'ti-oni the pipe to the chamber at the opposite end ot the tube from the end where the oi] ie permitted to escape.

In testimoniv whereof I have hereunto Signed in v naine in the presence of two subscribing witnesses.

JOHN C. BECKFELD. 1n the presence of- CLARENCE A. UTILLIAMS, JOHN H. Romair.

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