USRE19589E - Lubricating installation - Google Patents

Description

May 28, 1935.v J,. BIJR LUBRICATING INSTALLATION original Filed Jan. 31,' 1921s To sTEzRmcGEAn 'T0 SHACKLE T0 REAR WHEEL T0 BRAKE SHAFT 1U KING P'N ATTORNEYS May 29,1935.-V y f J UUR R.19,5s9

LUBRICATING `INSTALLATION origin-a1 Filed Jan. s1, 1923 2 sheets-sheet 2 ATTORN EYS Reisslied May 28, 1935 LUBRICATING INSTALLATION Joseph Bijur, deceased, late of New York, N. Y.,

by Auto Research Corporation, Dover, Del., as-

signee Original No. 1,797,203,

dated March 17, 1931,

Serial No. 616,016, January 31, 1923. Application'for reissue September 14, 1932, Serial No.

21 Claims.

The present invention relates to the lubrication of mechanical apparatus, by the use of a separate implement such as a lubricant gun, and the inventmn has its preferred application to motor vehicle. lubrication.

It is an object of the invention to provide an installation for rendering convenient and expeditious the lubrication of many or all of the bearings on the chassis by the use of a lubricant gun, and more speciflcally,to eliminate the need for separate and distinct application and operation of the. gun for each bearing.

It is -another object to lubricate the bearings reliably from an oil gun without soiling the hands, without likelihood of inadvertently omitting the lubrication of some of the multiplicity f bearings. and without substantial physical 'discomfort in lubricating the more inaccessible bearings.

Another object is to provide a lubricating lnstallation, the use of which shall not require the exercise of selective discretion, but in which, as the-remlt of a simple manipulation, lubrication is effected at each of a group ofy bearings, and which is dependable regardless of the tightness or looseness of any of the bearings.

Another object is to provide an installation of tbe above type which will not be deranged by the entry of dust or dirt and the operation of which will not require much manual effort.

Another object is to provide a system of the type mentioned, the elements of which are of simple and inexpensive construction, the assembly or installation of which shall be particularly easy and shall not require substantial modification in the structure of the vehicle, and which avoids theuse of parts protruding substantially from the vehicle:

Another object is to provide a chassis lubricating system ailording convenience in lubrication while dispensing with the need for flexible conduits to bridge between the relatively moving parts of the vehicle.

Another object is to provide an installation which, 11i.' injured as in an accident, will not be disabled beyond the vicinity of the damage, and in which repair or replacement may be readily en'ected According to one preferred feature of the invention, the apparatus, the bearings of which are to be lubricated, is provided with an appropriate inlet fitting for application thereto of a lubricant gun, preferably an oil gun, said fitting communicating with a plurality of the bearings, "through corresponding outlets in suitable piping installed upon the apparatus. To avoid relief of the pressure from the gun and discharge of excess lubricant at the nearest or loosest of the bearings with consequent deficiency at the remaining bearings, the line is provided with special control means which will respond automatically to the pressure applied at the gun to assure delivery of lubricant in desired predetermined proportions to the various bearings. The control means in one preferred embodiment, comprises highly restricted ducts in the various branches of the piping to the various bearings,l said ducts offering a resistance to now which is high relative to the resistance of the `conduit or line or of the bearings, so that the rate of delivery at each of the bearings, while pressure is applied, will be substantially controlled by the resistance in the ducts and not by the length oi' the line or the tightness or looseness of the bearings. In another embodiment, the delivery to substantially each of the bearings is controlled by a distinct measuring valve in the line, which opens under pressure transmitted from the lubricant gun, to Dass oil and is automatically reclosed when a predetermined or measured quantity of oil has `passed therebeyond.

vThe outlet restriction ducts or the valve control means are preferably in the form of pipe fittings connected directly to bearings in lieu of oil cups. Means is provided in the line, preferably valves, embodied in the outlet fittings to prevent leakage or escape of lubricant from the pipe line except when pressure is applied thereto from theexterior.

In the preferred application to motor vehicles. independent pipe lines are provided for each set of related bearings, each provided with an appropriate inlet fitting for application of the lubricant gun. Preferably one pipe line is provided on the chassis frame to supply the spring shackles and. bolts, a second pipe line is on the front axle to lubricate the various bearings thereat, such as the king pins, tie rod bearings, the steering gear and front brakes, and a third line is on the rear axle, from which are lubricated the rear brake mechanism, the rear wheel bearings and the like.

To prevent the possibility of interference with the operation of the restriction ducts or the measuring valves of the outlet fittings by intercepvtion thereat of any particles of dirt introduced at the inlet fitting and carried with the oil, appropriete filter means is provided near each inlet fitting. To intercept any chips or other solids .picked up in the length of the line beyond the -operating handle I5.

'interior-ly threaded as at 45 for coaction with external thread 46 on collar 38, and said nozzle has a spherical seating portion 41 to engagelthe spherical head 33 on the inlet fitting. To apply the gun, it is brought, as best indicated in Fig. '7 into correct juxtaposition with respect to the inlet fitting and the knurled flange 3l is turned 'to thread the nozzle 44 inward, so as to press the ball 3-nrmly between the spherical seat 40 on the collar 38 and the spherical seat 41 on the gun nozzle 44. By the construction set forth, a tight leuk-proof ball and socket connection is effected between the gun and the inlet fitting, which perlmits `limited angular displacement of the gun,

should the operating force'upon the gun not be applied strictly along the axial line thereof.

` A preferred embodiment of lubricating gun is shown in Fig. 'I and includes a cylinder 43 having an integral conical end 43 within which is secured a measuring or discharge tube 50, to the vend of which the nozzle 44 heretofore described is amxed. The gun includes a plunger i snugly fitting within the tube 53 and normally closing the lateral oil inlet 52 thereof. The plunger has an integral reduced stem 33 extending axially through the cylinder 48 and projecting therefrom through a stuffing box 34 and having an integral A coil spring 56 encircles stem 63 and presses against the collar 31 at the end of the pllmger Si, to urge the latter against the annular seat 63 provided in the nozzle 44. The end of the piston is provided with a yielding seating portion 53 having an oil-proof facing to assure liquid-tight seating, in order. to prevent escape of oil left in the gun after or preparatory to use. The gun plunger seat may be similar in construction to the relief valve in the fitting of Fig. 8 heretofore described. 'Ihe oil gun casing has a removable plug B0 through which it is charged, said plug being provided with a valve 6I therein spring-pressed against its seat to close a. venting duct 32 through which air enters as oil is elected from the gun in operation. The plug 30 is preferably diametricaily opposite the lateral oil inlet 52 of the charging cylinder :and .said inlet extends close to the wall of the gum as shown, for a purpose appearing in the description of operation below.

It will be understood that the specific inlet fitting and the specific oil gun described, are largely illustrative, and that many of the beneficial results of the invention may be achieved by the use of other types of lubricant gun and with different connecting means therefor. To intercept any solid particles of dirt which may be admitted to the line from the oil gun, and which, if allowed to be carried with the oil, might rapidly clog the small strainers 30 in the outlet ttinga there is provided special lter boxes B suitably mounted near the inlet fittings oi thel lines. As shown in Fig. 3, the lter box B2 for the front axle is riveted or bolted as at 36 within the. channel at the rear side of said axle; the filter box B3 for the rear axle is similarly attached at the rear top or bottom of the latter, and lter box B' for the chassis frame line is secured as shown in Fig. 6 to the inside of the channel frame of the vehicle.

A preferred form of filter element is best shown im the sectiomi view or Fig. 4. This device comprises a stamped metal rectangular casing 61 havingvathreaded inlet nipple 63 to which the length of pipe 33 from the corresponding inlet fitting is ysecured as by a suitable union 10. Within the ,15 il is an appropriate felt or other absorbent lter pad 1I held in position by a rectangular cover 12 telescoped into the casing base, the rim of the latter being crimped as at 13 over the rim of the cover. The cover element has an outlet bushing 14 also threaded as at 15 for connection by means of a union 16 to a T fitting 11 which connects to the length of the line as illustratively shown in Figs. 3 and 6. To prevent contact by bowing of any substantial portion of the i'llter element under oil pressure against the enclosing casing wall, which might interfere with the effectiveness of the filter, there is superposed over the faces of the filter element, sheets of metal gauze 18 and 19 contacted by ribs B0 and 8i pressed inward respectively from the casing and cover, the filter being clamped in position merely around its rim as at 32. Lugs 63 by which the filter casing is secured to the apparatus are preferably brazed or riveted as at 33 to the edge of the filter box.

In operation, after the gun is charged with oil and the illling plug 60 is secured, the operator applies the gun say to the inlet fitting F2 on thc front axle, by juxtaposing the nozzle 44 with respect to the ball 36 and rotating the knurledcollar 33 until a firm connection is established. Thereupon the operator grasps the handle 55 and pulls it outward once against the resistance of-spring 56, whereby lubricant within the gun cylinder 4,8 is forced through the lateral inlet 52 to fill.the interior of the discharge tube 50. Valve 33 in the inlet tting acts as a check valve during this operation to prevent sucking of lubricant from the pipe line. If the pull is not directly inline with the axis of the gun, no material strain will be exerted upon the parts since the ball and socket joint between the gun and fitting permits of limited relative angular displacement for alignment with the direction of the pull. When the handle is now let go-assuming that the filter box is omitted from the line and the weather is warm and the oil correspondingly fluid-the expansion of the spring 56 causes the plunger 5| to move inward quickly toward the nozzle to eject or discharge the measured charge of lubricant in the tube 50, through the duct 31. opening inlet valve` 33 againstthe opposition of spring 34 and transmitting the substantial pressure exerted by spring 56 through the oil filling the length of the lineto the outlet fittings at the bearings. The pressure thus transmitted opens the valves 26 of the outof the outlets O to flow, it might, particularly in cold weather when the oil has become viscous,-

take an appreciable interval for the spring 56 to discharge the gun, unless of strength greater than could be conveniently overcome by manual force.

If the source of oil pressure is a permanent l part of the installation, it would be substantially a matter of indifference how long the automatic discharge may take. The use of a separate oil gun, however, to be applied to various inlets successively would be inconvenient were the discharge to take longer than a few seconds. Accordingly at a suitable location on each of the lines, preferably between the inlet tting and the filter box, thereof, there is preferably provided a small pressure bell which may comprise a T-iitsomewhat in excess of the sum of the charges of the-various measuring valves on the line, thereby assuring transmission of ample pressure through the line to etlectively seal each of the measuring valveein its discharged position.

It is; of course, understood that, if desired, the restriction duct ilttings of Fig. 8, and the measuring valve fittings of Fig. 9 may be used concurrently, on one and the same line, the former at' the bearings where slow drip feed is desirable and the latter at any bearings at which a slug of oi may be preferred.

Although, as heretofore noted, the invention has its preferred application to the lubrication of the bearings on the chassis of a motor vehicle, many of the features thereof are applicable to thelubrication of bearings on other mechanisms.

No claimis made in this application to the construction 'ufl the individual elements per se. The

` drip plugf'for instance, shown at Fig. 8 is separately" claimed in the co-pending application Ser. No. 282,958.' led June 5, 1928, and'slnce patend under No. 1,732,828 of Oct. 22, 1929. The measuring valve shown in Fig. 9 is separately claimed in oni-pending application Ser. No. 596,858, tiled October 25, 1922, and the lter of Fig. 4 ii separately claimed in co-pending application 8er. No. 662,195, filed Sept. 12, 1923.

` By seamless or solid tubing or piping is meant that such tubing or piping is free of'open seams which would permit leakage of lubricant.

It will be noted that according to the system ofthe .present application the inlet iittings F', 1'* and l"a aiotd quick detachable means in conjunction with the portable lubricant glm of Fig. 'l for coupling said gun to the conduit systems feedbearings. l

Iorexample, by a quick detachable coupling of the glm to the inlet iltting or nipple F', it is possible to simultaneously supply the branched conduit system leading to four spring shackle bearings and the four spring hinge bearings. 'Ihe branch conduits of these branched conduit systems each lead to an individual bearing or bearing structure, and are associated with valved llttin`g means, such as and F' to prevent return now. These branched conduits are connected to a single main conduit having an inlet F' so that it is possible by a single application of the lubricant gun of Fig. 7 to the inlet to simultaneously supply lubricant to all of the bearings. The lubricant rgun and the metering fittings in the branched'conduits respectively measure the total amount of lubricant and proportion this amount of lubricant among the bearings. The subsidiai-y .system just described is supported upon the chassis frame, and the operation and construction F oti'ltting means ln so that it is possible to supply all ofif'these bearings simultaneously with the proper-quantity of lubricant by la single detachable-connection of the lubricant gun of Fig. 7. In tlle'case of the rear axle the branched conduits"'to the rear wheel and to the rear brakev are connected to a common inlet conduit provided with the inlet arrangement F3.

is claimed is:

11. rn acnassu lubricating installation, in combination, a plurality of independent lubricant conduits, one for each of thesubstantially distinct structural units of the chassis, said conduits including readily accessible inlet ttings for the nozzle of a lubricant gun and 'each including a plurality of outlets to corresponding bearings, and control elements in the lines, one near each of the outlets, the elements on each line responding automatically to pressure applied by the gun at the corresponding inlet fitting to deliver lubricant in predetermined proportions from the conduit to'the bearings supplied from the branches thereof;

2. In a lubricating installation for motor vehicles, in combination, a chassis frame line and a front axle line, each having outlets respectively to corresponding bearings on the chassis frame and on the front axle, each said vline comprising independent seamless metal piping xed upon the corresponding vehicle structure, said lines having substantially identical inlet ttings for application oi' a lubricant gun, and control means in the lines responding automatically to pressure applied by the gun to deliver lubricant in prede- Asubstantially identical inlet ttings for application vof a lubricant gun, and control means in the lines responding automatically to pressure applied by the gun to deliver lubricant in predetermined proportions to the bearings.

4. The combination set'forth in claim 3 in which each of the control means comprises a highly restricted duct to absorb pressure transmitted from the lubricant gun and in which a resilient bell serves to store the pump discharge for subsequent slow delivery.

5. Inl a lubricatingv installation, in combination, a system of piping having branches and having an'inlet ttingfor application of a lubricant gun, said branches of high resistance to flow, and each having ran outlet to corresponding bearings, means maintaining' the line normally illled with oil, an air chamber communicating with the line, and a check valve near said inlet fitting, whereby upon application 'vof oil pressure to the line through the oil gun, said air chamber will be charged, said check valve will close and said air chamber will apply pressure toA expel lubricant through the outlet fittings to the bearings.

6. In a lubricating installation, in combination, a system of piping, having branches, bearings, outlet ilttlngs connecting said branches to said bearings-each of said fittings having a highly restricted passage therethrough to control the delivery to the bearing, an inlet tting connected to said piping, valve means normally maintaining said inlet fitting closed, said inlet tting having means for application -of an oil gun thereto, and an air chamberv comprising a T tting in said line having an arm projecting from said line and closed at its outer end.

'7. In a lubricating installation, in combination, a system of piping having branches and having an inlet for application of a lubricant gun, said branches of high resistance to ow, and each hav--` ing an outlet to a corresponding bearing, a pressure bell in the line, and near said inlet to store the charge from the gun and subsequently force the lubricant through the line and a check valve a relatively movable element line, each having outlets to corresponding bearings, each said line comprising independent seamless metal piping llxed upon the corresponding structure, said lines having substantially identical inlet fittings for application of a lubricant gun, and control checkvalved means in the lines responding automatically to pressure applied by the gun to deliver lubricant in predetermined proportions to the bearings.

17. The combination set forth in claim 16 in which each of the control means comprises a highly restricted duct to absorb pressure transmitted from the lubricant gun and in which a resilient bell serves to store the pump discharge for subsequent slow delivery.

18. In a lubricating installation for a machine structure carrying bearings to be lubricated, the combination of a distributing pipe system afilxed upon the structure, said system including outlet branches leading respectively to corresponding bearings, pressure responsive flow control checkvalved means at said bearings, said branch system having a single inlet readily accessible from the exterior of the machine, said inlet comprising a tting constructed and arranged for removable application thereto of a supply of lubricant under pressure by means of which lubricant may be injected into the pipe system, said system including a single means in advance of all the branches to eil'ect emission through the control means after Y the source of pressure has been withdrawn from the inlet fitting.

19. In a lubricating installation for a machine structure carrying bearings to be lubricated, the combination of a distributing pipe system afllxed upon the structure, said system including branches with flow rate restricting outlets provided with spring-seated check valve means and leading respectively to corresponding bearings, said branch system having a single inlet readily accessible from the exterior of the machine, said inlet comprising a tting constructed and arranged for removable application thereto o! a supply of lubricant under pressure by means of which lubricant may be injected into the pipe system, said system including a single lubricant storage means in advance of all the branches to eil'ect emission through the outlets after the source of pressure has been withdrawn from the inlet fitting. 20. In a lubricating installation for a machine structure having a plurality of relatively movable structural elements connected to each other, in combination, lubricating piping distributing systems on said elements, said systems having a plurality of outlets to bearings on said respective elements to be lubricated, each said system further comprising a plurality of metal piping sections iixed upon the corresponding element, said systems being provided with substantially identical inlet iittings for the application of a lubricant gun, said inlet fittings consisting of nipples provided with spring seated check valves and said gun being provided with detachable female nipple means to be received upon and embrace said inlet fitting nipples, said installation being provided with control means to deliver the lubricant in predetermined proportions to the bearings to be lubricated, said gun being adapted to be manually attached to said inlet nipples by a quick detachable connection and each of said systems being adapted to be successively supplied with lubricant by said gun by manually making detachable connections therewith and actuating said gun to supply lubricant to the system to feed the bearings, said outlets of said piping distributing systems being also provided with springseated check valves cooperating with the springseated check valves in the inlet iittings to maintain the piping distributing systems substantially filled with lubricant.

21. In a 1ubricating instauation for a machine structure having a plurality of relatively movable structural elements connected to each other, in combination, piping systems attached to the said elements, each being independent of the others and consisting oi a plurality of sections of metal piping fixed upon the corresponding element, and having outlets to the bearings to be lubricated on said elements, said systems having independent readily detachable inlet connections respectively carried upon the elements, in a position readily accessible for the application of a lubrican gun from the exterior of the structure said inlet connections consisting of male nipples each provided with spring-seated check valves and said gun being provided with a single pressure applying piston member enclosed in a cylinder and provided at one end with manually detachable female nipple means to be received upon and embrace said male nipple, said systems being successively supplied with lubricant pressure from said gun by successive manual detachable connections between the female nipple means of said gun and the male nipples of said systems, said installation being alsovprovided with means to predetermine the proportion of lubricant among said bearings, said last mentioned means including fittings serving to connect the outlets of said sections of metal piping to the bearings to be lubricated and each including a ller member to cause metering of the lubricant, a strainer member to protect said filler member and a springseated check valve member to cooperate with the spring-seated check valves in said inlet connections and maintain said piping systems substantially lled with lubricant at all times.

AUTO RESEARCH CORPORATION.

Assignee of Joseph Biy'ur, deceased, By EDWARD H. KOCHER,

Presiden' t.

Images