US1784146A

US1784146A - Machine for babbitting sleeve bearings

Info

Publication number: US1784146A
Application number: US417134A
Authority: US
Inventors: Carl H Leis
Original assignee: Johnson Bronze Co
Current assignee: Johnson Bronze Co
Priority date: 1929-12-28
Filing date: 1929-12-28
Publication date: 1930-12-09
Anticipated expiration: 1947-12-09

Description

Dec- 9, 1930. c. H. LEIS 1,784,146

MACHINE FOR BABBITTING SLEEVE BEARINGS Filed Dec. 28 1929 5 Sheets-Sheet l INVENTOR. Car/h. 1. 6/3

ATTORNEY.

Dec. 9, 1930'. c. H. LEIS MACHINE FOR BABBITTING SLEEVE BEARINGS 5 Sheets-Sheer, 2

Filed Dec. 28, 1929 INVENTOR.

Car/hi1. BY

ATTORNEY Deb. 9, 1930; c. LE|$ 1,784,146

MACHINE FOR BAB BITTING SLEEVE BEARINGS Dec. 9, 1930. c. H. LEIS MACH INF FOR BABBITTING SLEEVE BEARINGS Filed Dec. 28, 1929 5 Sheets-Sheet 4 mm m N m mfi%m 5 fl AA m m 7 s fm B Dec. 9, 1930. c 515 1,784,146

MACHINE FOR BAB BITTING SLEEVE BEARINGS Filed Dec. 28, 1929 5 Sheets-Sheet 5 ATTORNEY Patented Dec. 9, 1930 UNITED STATES, PATENT OFFICE- CARL H. LEIS, OF NEW CASTLE, PENNSYLVANIA, ASSIGNOR- TO JOHNSON BRONZE COM- PANY, OF NEW CASTLE, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA MACHINE FOR BABIBITTING- SLEEVE BEARINGS Application filed December 28, 1 929. Serial No. 417,134.

7 My invention relates to machines for babbittiiig sleeve bearings, relating in particular to the class of machines wherein the molten babbitt is introduced within the sleeve under treatment while the same is being rotated.

Prior to my present invention, so far as I am aware, it has been the custom to employ a handle ladle of the desired capacity into which the molten metal is drawn and then poured into the sleeve to be treated the sleeve being rotated to distribute same therein by centrifugal action. This method is not only slow but permits introduction of dross or scum formed on the top of the metal to enter the bearing with the metal, thus providing a coating both inferior in quality and in density.

Another method heretofore employed is to force the desired quantity of metal up into the bearing, while being rotated, by means of a pump submerged in the molten metal. By this means considerable trouble has been experienced by the pump clogging, etc.

One of the objects of my present invention is, to provide a machine wherein the molten babbitt is fed from an opening in the "bottom of an elevated melting pot by the action of gravity to the interior of the sleeve bearing under treatment, thereby obtaining a supply of absolutely clean metal. j

Another object of my invention is, to pro vide means in the machine whereby an accurate measured quantity of babbitt may be gravitated to each like bearing sleeve in their order of treatment.

A further object is, to provide a machine wherein two separate sleeve bearings may be operated on at the same time. That is to say, that while one sleeve is being cooled off another may be charged with its supply of molten babbitt, thus speeding up production.

Still further objects are, to provide a machine of simple construction, of as few parts as possible and reduce to a minimum the possibility of becoming out of order.

Other objects and advantages will be obvious from the description and operation later set forth.

In the accompanying drawings I have illustrated an embodiment of, my invention, wherein like detail parts of the machine are indicated by like numerals 0t reference where they occur in the various views.

In. the following:

Figure 1 is a front elevation of the machine partly in section.

Fig. 2 is a side elevation of the same, also partly in section.

Fig. 3 is aside elevation of the upper portion of the machine, enlarged and in section.

Fig. 4 is a front elevation of the upper portion of the machine, enlarged.

Fig. 5 is a side elevation of a part of the machine constituting one of its chuck members and its operating mechanism, partly in section.

a Fig. 6 is an end elevation of the midway portion of the machine, partly in section. I Fig. 7 is a plan View of the babbitt conducting element, per se.

, Fig. 8 is a plan view of the babbitt pot.

Fig. 9 is a plan view of the pot base.

Fig. 10 is a plan view of'the pot supporting brackets, and

Fig. 11 is a plan view of the valve holder.

The machine, which in part includes two like sleeve chucking mechanisms, comprises in its structure supporting means including the base portion 1 adapted to be fixedly attached to a suitable foundation, and the housing 2 secured to the said base portion. The upper surface portion of the housing, at each end thereof, is provided with a key-way 3, and with elongated slots 4 for securing the adjustableportion of each sleeve chucking mechanism thereto, said housing being further provided with the inclined portions 6 located at each side of the central portion 7.

Each adjustable portion of the chucking mechanism includes a stock or bearing 8, ad-

justably secured in position upon the housing by bolts 9 extending through the \slots 4 formed therein and by key 3 carried by the stock engaging in key-way 3. The stock is provided with

sleeve bearings

10 and 10 within which is rotatably mounted a longitudinally' adjustable spindle 11 provided at its one end with a grooved head 12 having secured thereto a removable drive chuck plate or member 13 in the face of which is formed a depressed sleeve chucking surface portion 14. A pulley.15 is mounted on each spindle and is secured to one another by a suitable key 16 of the pulley engaging in a key-way 17 of the spindle, thus permitting the spindle to be adj usted longitudinally as well as to rotate with the pulley.

The spindle is actuated in either direction, longitudinally, as required, by an air actuating mechanism, comprising an air chamber 18 secured to the stock by rods 19 extending from lugs 20 on said stock to and connected to a plate 21 fixed to the chamber. The air chamber is provided with an air supply port 22 which extends from the one end thereof tothe air hose nipple 23 and another port 24 from the opposite end to the air hose nipple 25. The air piston 26 is operatively connected to the spindle by means of a coupling 26 carried thereby which rotatably engages in the companion coupling part 27 carried by the rod 28 of the piston 26, there being a thrust bearing 29 arranged between the two coupling parts.

For rotatively operating the adjustable spindle and its chuck of each stock an electric motor 30 is employed, being coupled to a shaft 31 engaging at its outer end in a bearing 32 secured to the base plate, said shaft carrying a pulley 33 over which, with the spindle 1 pulley 15, is applied a belt 34. An idler pulley 35 is suspended by a bifurcated member 36, attached to the housing, and engages the belt to keep same taut.

Upon the central portion 7 of the housing are secured the two like supporting members 37-37 which are further secured to the member 38 fixedly supporting the elevated bab bitt pot 39.

Each of the members 37 carries a driven chuck mechanism as a companion to that of the spindle chuck, and comprises a chuck member 40. rotatively fitted within a shouldered opening in said member 37 and in engagenient with a thrust bearing '41 therein. The member 40 has removably secured there to the chuck plate 42 having a chucking de-' pression 43 in the face thereof and also a tapered central opening 45 which inclines toward and registers with the opening 44 of the chuck plate, the purpose of which will later appear.

Secured upon the portions 46-46 of the members 37 is a bracket 47 having upstandin lugs 48 through which extends a pivotal pin 49 secured to an adjustablebabbitt conducting member 50.

The babbitt conducting member'comprises integral dual spouts having their inlets 51 spaced apart and terminating in oppositely disposed

spout tips

52 and 53 alining with the openings 44 of the chuck plates 42 and its pivotal pin 49. The conducting member is maintained at a temperature suitable for the flow of molten babbitt therethrough by suitable electric heating elements 54 arranged within insulated casings 55 secured in pockets 56. A handle 57 is secured to the conducting member for manually adj usting same upon its pivotal pin.

The babbitt pot support 38 is provided with a tapered basin like depression 58 converging toward and terminating in the secondary outlet 59 for directing the flow of molten babbitt to the spout. The support is further provided with an insulated electric heating element 60 of annular form, fitted within a recess in the lower surface thereof for the purpose of maintaining the proper temperature, said element being held in place byan annular plate 61. The melting pot 39 has a valve chamber 62'formed therein which communicates with the pot proper by the discharge or supply chamber 63 and has a valve 7 seat 64 at its lower edge and a similar valve seat 65 at the upper edge.

The pot is further provided with the two upright tubular portions 66 through each of which loosely extends a valve stem 67, each connected at its upper ends by a cross member 68 and at their lower ends by a valve holder 69 having ports 7 O therein. The holder carries a valve 71 to engage the seat 64 for the normal retention of liquid babbitt in the pot.

Secured by its base portion 72 to the top of the pot is a bracket 73 the aforesaid valve rods being slidably fitted through the connecting base portion thereof. The upper portion of the bracket has movably fitted therethrough the vertically disposed tubular valve stem 74 provided with an elongated valve member 75 of sulficient weight for the purpose intended, said valve having a longitudinal opening 76 therein terminating in a chamber 77'at the valve end. The stem is provided at its upper end with a fixed stop collar 78 and adjusting out 7 9.

Movably fitted within the hollow stem 74 of the valve 75 is a stem 80 havin a piston 81 at its lower end and movably tted in the aforesaid chamber 77 of the valve. The upper end of the piston rod is threadably fitted into the adjusting nut 79 and is itself provided with a jamb nut 82 to engage the said adjusting nut 79.

Fitted through the upright portion of the bracket 7 3 is a pivotal shaft 83 having secured thereto a valve lifting bifurcated rock arm 84 which straddles the valve stem 75 and en-' gages beneath the fixed collar 85 thereof. To

7 valve 75.

The bracket 73 has also a-pivotal pin 87 mounted therein upon which is fixed another bifurcated valve lifting member 88 also straddling the valve stem and engaging the cross member 68 of the other valve 75.

The stem 89 of the valve lifter is providedwith an adjustable counter wei ht 90 for maintaining operative contactwo the valve lifter with the said valve cross member 68,

The melting pot has disposed therein a pair 'of spaced electrical heating units 91,

which rest upon elevated portions 92 of the be readily understood, to be properly con-' nected to a suitable source of electrical ener with proper control devices included in t e circuit, none of which are here shown. Also i there will be a two way valve employed on the air lines, not shown.

The melting pot is provided thereabout by insulating

material

93 and 94 to prevent the escape of and confine the heat thereto. The insulating is held in place by sheet metal covering v94'.

I have shown a sheet metal guard 95 fixed to the rear of the supports 37 and upon each spindle is mounted an adjustable sector 96" carrying a fixed sheet metal guard 97 and operating handle 98. These guards are mere- 1y a precaution a ainst injury to the operator by possible splas ing 9f metal.

The machine is shown as having one set of chucking members as spaced farther a art than the other set (see left side Fig. 1 so as to illustrate that two bearing sleeves of different lengths, instead of like lengths, may be treated with babbitt onthe one machine.

Operation Assuming that the electriccurrent has been turned on to the heating elements and the babbitt metal is in a molten state of the dement with 'theother end of the bearing, as'

shown by dotand dash lines in Fig. 4, canspasses through the ing the bearing and chuck plate 42 to be rotated in unison therewith. The operator then forces the hand crank rearwardly, causing the bifurcated member 84 to permit lowering the valve 75 to its seat in the base of the pot. As the valve is being seated the piston 81, which has previously been adjusted to a definite position, as in this instance a certain distance below the valve, displaces a portion ofthe metal in the supply chamber (53 leaving tity-of metal therein. s the hand crank is forced further to the rear, the bifurcated member 84 comes into engagement with the cross member 68 of the valve holder 69 forcing the same downward sufficient. to unseat the valve 71. As this valve is unseated the charge of metal in said supply chamber ports 70 in the valve holder into the tapered basin 58 and out through the opening 59. In passing through said openin the metal is directed into the spout 51 an is discharged through the spout tip 53 and chuck plate opening 44 to the interior of the sleeve bearing being rotated. The babbitt being in a molten state as it enters the bearing, the interior thereof becomes evenly coated with said metal to a measured thickness by centrifugal action. When the bearing is sufliciently cooled, requiring but a briefperiod of time, air is cut off from the a charge of predetermined quanrear end of the air chamber and supplied to the forward end thereof, causing the piston to recede and withdraw the chuck plate 13 so that the now babbitted bearing is readily removed.

As will be apparent, when metal is placed in the bearing sleeve it cannot escape therefrom as the one end is entirely closed by the chuck plate 13, and the other end, where the metal enters, is also closed except for the small central opening 43 where the metal enters.

As the machine is constructed to operate 11 on another hearing at the leftend thereof, w 1ile the bearing in the right end is being further rotated for cooling, the hand crank 86 at that side is brought forward to cause the valves 7-1 and 77 and piston 81 to return to normal position and again permit the supply chamber 63 to refill. Another bearing being then chucked at that side of the machine the spout member 50 is adjusted upon its pivot to cause the spout 51 to be moved out of registration with the opening 59 and the spout 52 brought into registering position with the said opening'59. The hand crank is then pushed rearward, as heretofore set forth for operating the valves and piston, delivering a charge of like amount to the bearing chucked at that side.

In the drawings, the pair of chucks atthe left side are illustrated as being farther apart than those at the right, showing the possibility oftreating two bearings of different dimensions, by adjusting one stock upon the housing, through the medium of the bolts 9. It will, however, be readily apparent that both stocks may be adjusted equidistant when the bearings to be treated are all of one dimension.

It will be noted that the capacity of the outlet chamberof the pot may readily be changed to deliver a charge of any capacity within the limits thereof, by adjusting the piston.

While I have shown and described a specific embodiment of my invention I desire that said embodiment be regarded as illustrative only, and that the appended claims shall be accorded the broadest construction consistent with the prior art. I i

What I claim is I 1. In a machine of the class set forth, the combination of a support, duplicate pairs of rotatable chucking members thereon for chucking and rotating a sleeve bearing when placed therebetween for internally babbitted,

' vmember for chucking and unchu'cking said one member of each set being rotatively secured in a fixed position on said support and the other member being longitudinally adjustable toward the other member, anstock secured to said support and carrying the longitudinally adjustable member, means for adjusting said member toward the other member for chucking and unchucking said sleeve bearing therebetween for treatment, an elevated babbitt melting pot having a discharge opening located in the base thereof, a valve for controlling the lower end of the discharge opening of the pot, means for separating agiven quantity of the metal from the pot and to supply it to the discharge opening. a dual spout member pivotally mounted on the support the pivot and outlet of each being in axial alinement with one of each pair of the chucking members and terminating therein, said dual spout member adapted to be adjusted uponits pivot to cause the inlet of one to come into position to receive a charge and convey same to a sleeve chucked by one of said sets and adjusted in an opposite direction for the other to receive a charge and direct same to a sleeve chucked. in the other set, and means for rotating the chucking sets and sleeves being operated on.

2. In a machine of the class described, the combination of a support, duplicate pairs of rotatable chucking members thereon for chucking and rotating a sleeve bearing when placed therebetween for internally babbitting, one member of each set being rot-atively secured in a fixed position on said support and the other member being longitudinally adjustable toward the other member, a stock secured to said support and carrying the longitudinally adjustable member, means for adjusting said member toward the other sleeve, an elevated babbitt melting pot havthe metal from the pot and to supply it to the discharge opening, means for operating said valve and the adjustable separating means, in their respective order of operation, a dual spout member pivotally mounted on the support the pivot and outlets of each being in axial alinement with one of each pair of chucking members and terminating there in, said dual spout member adapted to be adjusted upon its pivot to cause the inlet of one to come into position to receive and convey a charge to a sleeve chucked by one of said sets and adjusted in an opposite direction for the other to receive and conduct a charge to a sleeve chucked in the other set, and means to rotate the chucks and sleeve of each set as a unit.

3. In-a machine for babbitting sleeve bearings, the combination of ababbitt melting pot having a discharge chamber in the base thereof, a valve for closing the outlet end of said chamber, means for operating said valve, a second valve for closing the upper end of said chamber to separate a definite charge of babbitt therein from that in the pot, and means for operating said second valve.

4. In a machine for babbitting sleeve bearings, the combination of a babbitt melting pot having a discharge chamber in the base thereof, means for melting babbitt in said pot, a valve for controlling the outlet end of the discharge chamber, and a valve for controlling the upper end of said chamber,

means for operating the upper valve to separate a given charge of babbitt within said chamber from the main body, means also definite charge therein from the main body of metal, actuating means for said valves, said means adapted to close the inlet valve and when further actuated open the outlet valve, adjustable means for reducing or increasing the charge capacity of said chamber, and means for heating the babbitt in the pot.

6. In a machine for babbitting sleeve bearings, a babbitt melting pothaving a discharge chamber in the base thereof, heating means forthe pot, a valve for closing the outlet end of the chamber, a valve for controlling the inlet end thereof, means for actuating said valves, a support for said pot provided witha"secqndary discharge opening, and'heating a means for maintaining said support at the desired temperature.

7. In a machine for babbitting sleevebearings, a babbitt melting pot having a discharge chamber in the base thereof, heating means for the pot, avalve for closing the outlet end of the chamber, a valve for controlling the inlet end thereof, means for actuating said valves, a support for said pot and provided with a secondary discharge opening, heating means for maintaining said support at the desired temperature, and a dual conductor spout member pivotally supported beneath said support and adapted to be adjusted to conduct a discharge of metal through either of the spouts. i

8. In a machine for the purpose set forth, the combination of an elevated babbitt melting pot having a direct outlet chamber in the bottom thereof, a valve for closing the lower end of said chamber, a member adaptedto enter the upper end of said chamber a predetermined distance to cut off a charge of metal from that in the pot, an operating member, and means for operating said valve and chamber entering-member by actuating said operating member.

9. In a machine for the purpose set forth, the combination of an elevated babbitt melting pot having a direct outlet chamber in the bottom thereof, a valve for closing the lower end thereof, a valve for closing the upper end thereof, a member associated with the upper valve and adaptedto enter said chamber a predetermined distance in advance of theassociated valve and provide a charge therein,- a manually operated member, and means actuated by said manually operated member to operate said valve and associated member and 'said lower valve in their respective order.

' 10. In a machine for the purpose set forth, the combination of an elevated babbitt melting pot havinga direct outlet chamber in the bottom thereof, a valve for closing the lower end of said chamber, a piston adapted to'enter the upper end of said chamber a predetermined distance to provide a charge in said chamber of a given quantity of metal, means to adjust said piston to increase or decrease the capacity of the chamber, .a valve associated with said piston and adapted to seat upon the upper end'of the chamber about the piston, an operating member mechanism for operating said valves and piston in their respective order by actuating said operating member, and a secondary discharge chamber disposed beneath the lower valve.

' .11. In a sleeve babbitting machine, a babbitt discharge spout member, a support upon which said member is ivoted at its discharge end, said member incliiding dual spouts the outlet ends of which extend in opposite directions and in axial alinement with the pivotal center and the inlet ends spaced apart from the ivotal axis, means for operating said mem er to receive a charge in either spout, and means carried by said member for heating each spout.- I 2 12. In asleeve babbitting machine, a babbitt heating pot provided at its bottom with a measuring chamber communicating therewith, a valve for closing the lower end of said chamber, a valve for closing the upper end, a piston carried by and movable with said upper valve and adapted to-enter the measuring chamber a predetermined distance for a measured charge of metal, means to adjust said piston to cause same to enter a greater or less distance within the chamber for greater or less charges, a manually operated member, and mechanism cooperating with the valves and said member and adapted to operate the valves in their respective orders b actuating said manual member.

13. n a machine for the purpose set forth, an oscillatable babbitt conducting member comprising an upstanding body adapted to be pivoted at its lower end and provided with two spouts the outlet ends of which project in opposite directions from the sides of t e body and in line with the pivotal axis, the inlet ends being spaced apart and disposed transversely to that of the outlet spacings,,the spout openings'being radially disposed in the direction of operation with respect to the pivotal axis, said member being oscillatablc to bring the upper intake end of either spout into conducting position.

14. In a machine such as set forth, the combination with an elevated babbitt melting pot having a discharge chamber communicating therewith atthe bottom, of a valve for closing and opening the lower end of said chamber and having vertically disposed actuating means, a valve for closing the upper end of ,said chamber and having vertically disposed actuating means, a chamber capacity piston operated with the upper valve and adapted to be adjusted to enter the chamber to such distance as will give the desired capacity, and a manually operated mechanism o'peratin in one direction to lower the upper valve and piston to their closed positions and open the lower valve for discharging the contents of the chamber, and close the lower q valve and elevate the upper valve and piston when operated in the opposite direction.

15.- In amachine such as set forth, the combination with an elevated babbitt melting pot having a discharge chamber communicating therewith at the bottom, of a valve for closing and opening the lower end of said chamber and having vertically disposed actuating means, a gravity balanced valve for closing the upper end of said chamber and having vertically disposed actuating means, a chamher capacity piston operated with the upper valve and adapted to be adjusted to enter the chamber to such distance as will give the de- III sired capacity, and a manually operated mechanism operating in one direction from either side of the pot to lower the upper valve and piston to their closed positions and open the lower valve for discharging the contents of the chamber, and close the lower valve and elevate the upper valve and piston When 0perated in the opposite direction.

In testimony whereof I aflix my signature.

CARL H. LEIS.