US1444258A - Apparatus for sizing and quenching cups and cones - Google Patents

Description

M. T. LOTHROP.

Feb. 6, 1923' APPARATUS FOR SIZING AND-QUENCHING CUPS AND CONES.

3 SHEETS-SHEET l.

FILED MAR. 22, 1920.

Feb; 1923. 11,444,258,

M. T. LOTHROP.

APPARATUS FOR SIZING AND QUEN CHING CUPS AND.CONES.

FILED MAR 22, 1920. 3 SHEETSSHEET 2.

Feb. 6,1923.

' M. T. LOTHROP.

APPARATUS FOR SIZING AND QUENCHING CUPS AND CONES.

3 SHEETS SHE ET 3.

HLED MAR. 22, I920.

I grinding the bearing surface.

mg operation;

s MARCUS T. LOTHROP, OF

'Patented Feb. 6, 11923.

BEARING COMPANY, OF CANTON,

OHIO,

ASSIGNOR TO THE TIMKEN ROLLER OHIO, A CORPORATION OF OHIO.

APPARATUS FOR SIZING AND QUENCHING CUPS AND COMES.

Application filed March 22,

of which the following is a specification.

My lnvention relates to devices and proand quenching cups and with operation of It consistsprincipally in means hereinafter described for preventing distortion during the quenchit also consists in supportcone during the quenching v maintain the proper concentricity thereof; italso consists in means for insuring the desired size and taper of the cup; and it also consists in t e process and in the parts and combinations and arrangements of parts hereinafter described and claimed.

In the accompanying drawing wherein like numerals refer to like parts wherever they occur,

Fig. l is an end elevation of a sizing and quenching machine embodying my invention;.

Fig. 2 is a front elevation of the machine;

Fig. 3 is an enlarged vertical section through the quenching and cup expanding device, one of the expanding plugs being shown in its lowermost position and in engagement with a cup and the other of said plugs being shown in its uppermost position and after-a cup has been stripped therefrom;

ig. 4: is a vertical section on the line 4-4 in Fig. 1, showing the mechanism for operating the clutch and the mechanism forlocking the cam shaft;

Fig. 5 is a fragmentary end View of the 1 parts shown in Fig.4;

Fig. 6 is an enlarged vertical section taken through the lower end portion of one of the expanding-plugs; and 'Fig. 7 is a view of the plug. The cup of a conical roller bearing is a lower end of the hollow ring or shell whose inner surface is 1920. Serial No; semen outer surface may be either conical or cylin- 1s concentric with the inner sur-' usual process of manufacturing..: these cups calls for careful machining, whlch they aresubmitted to the heat tre'atdrical but necessitates grinding" of the bearing surface, followed by a burnishing. The grinding operation only expensive but it is injurious to the is not prodor less of the hardened shell thereof. Besides, much of the 'product is distorted beyond redemption or 15 so inaccurate as to diameter or taper that it has to be scrapped.

umerous efforts have been made to overcome the tendency to as I know, the proposed devices have been quite inefficient for the purpose.

he sizing and quenching machine shown in the drawings comprise a table 1 supported on suitable standards 2.

g to my invention, made and handled in the usual way until the close of the heat treatment exceptthat it is bore of slightly less diameter than is required for the finished cup. The hotvcups 9, as they; come are placed on a circular supportin plate 10 Which is located b j in a central circuholder and the tabe 1 are all provided ishing operation such as 65 the cup is from the furnace,

spacing 1L check 17 the purpose of which will hereinsupply pipe holders.

upwardly in axial opened and closed by means of arranged in the pipes 19'. These valve rods with central vertical openings which are disposed in axial alinement.v

The quenching liquid is conducted to the cup holders from a main'supply pipe 13 provided with a control valve 14. The supply pipe 13 has oppositely extending horizontal branches15 whose outer ends extend alinementwith the central openings in the cup holders 4;. The upper end of each branch pipe 15 is provided with a valve 16 provided with a ballafter be described. Communication is established between the respective valves 16 by means of a horizontally disposed pipe 18. Communication is established between the cup holders 4 and their respective branch pipes 15 by means of vertically disposed. pipes 19. The pipes'19 extend through the alined openings in the table 1 and spacing blocks 12 and are threaded into the central openings in the bottom plates 7 of the holders, their upper ends terminating flush with the upper surface of the bottom plates. The lower ends of the pipes 19 are threaded in the upper ends of the valves 16, thus establishing communication between the main 13 and each of the holders. A nut 20 is threaded on the lower end of each ofthe pipes 19 and bears against the bottomsurface of the table to hold the pipes in position.

The intermediate plates 6 of the holders are provided with a series of radially spaced horizontally disposed ports 21 whose inner ends communicate with the upper ends of the pipes 19 and whose outer ends communicate with a circular series ofivertical ports 22, which are formed by in the intermediate plates 6 and the annular top plates5 of the holders. The flow of the quenching liquid from the-ports 21 and 22 into the central openings in the annular top plates 5 of the holders is accomplishedby means of a series of horizontally disposed jet openings 23, which lead from. the vertical ports 22 to the central openings in .the

The valves 16 in the branch pipes 15 are valve rods 24 are arranged for vertical movement in the pipes'19 and provided with oppositely projecting pins or lugs 25, which engage the inner walls of the pipes 19 and thus center the valve rods therein. The lower ends of the valve rods are provided with beveled head portions 26 which seat againstbeveled valve seats formed in the valves 16. The beveled heads of the valve rods are normally retained against the valve seats by the pressure of the quenching liquid on the under sides of the head portions of the valve rods, thus stopping the flow of the quenching liquid from the main supply pipe to the cup cups.

' tions.

being provided with oppositely drain pipe 28 extends upwardly through the table 1 and pan 3, its upper edge terminating flush with the bottom of said pan. The horizontal pipe 18 which connects the two valves 16 of the branch pipes 15, is also connected to the waste pipe 28 by means of a pipe 29. The purpose of this connection will be hereinafter described.

The hot cups 9, after being placed on the plates 10 of the holders, are engaged by vertically movable tapered plugs 30, wh ch are with a located above the holders in axial alinement therewith and are adapted-to expand said I lower ends of vertically movable slide rods 31 and have conical lower end portions 30 of the same taper as that desired for the inner surfaces of the finished cups. The slide in bearings 32 secured to the horizontal member'o an open frame 33, which projects mounted on the upwardly from the table, and are alter-' nately actuated 1n a manner hereinafter described. The expanding plugs have threaded upper end portions 34 which are screwed into the slide bars'31, and are provided with These expanding plugs are adjustablyf rods 31 are slidably mounted lock-nuts 35 for locking them in the desired 0 posltions of adjustment. Accordngly, the j stroke of the plugs can be so adjusted or limited that the portion thereof of the size desired for thecup shall be in contact with the cups atfthe lower limit of the stroke of each of said plugs.

Devices for stripping the cups from the tapered ends of the expanding plugs 30 when the plugs are intheir uppermost positions are mounted on their lower end por- These devices comprise cylindricalsleeves 36 which are loosely sleeved on the lower ends of the plugs and are held threon by means of pins 37 These pins extend through horizontal holes in the expanding plugs, fitting tightl therein. The opposite ends of the pins 3 extend into elongated vertical slots 38 formed in the stripping sleeves 36. The stripping sleeves have nuts the nuts disposed locking-them to the stripper sleeves in any desired. position of adjust: ment. With this arrangement, when the plugs reach their uppermost positions, the adjusting nuts 39 on the upper ends of the stripping sleeves 36 strike the lower ends 39 threaded on their upper ends,

set-screws for of the bearings 32of the slide rods 31 and are held stationary. whereupon, further inclined from the vertical.

movement of the plugs causes the cups to engage the stripper sleeves and be forced ofl the tapered ends of the plugs.

The lower ends of the expandingplugs 30 have central bores which extend upwardly from their bottom faces and form cylindrical chambers '40 therein. Studs 41 are threaded into the upper ends of the chambers 40, the studs belngof smaller diameter 'th than that of the chambers to leavea space between the studs and the walls of said chambers. The head vportions of the studs are adapted to engage the upper ends of thevalve rods 24 for actuating the same and said studs are provided with lock-nuts 2 for clamping them in the desired adjuste position.

As illustrated in Fig. 6, the tapered surfaces 30 of the expanding plugs 30 are fluted as at 43, the flutes being preferably The plugs are provided with a series of horizontally disposed radially spaced ports 44, which lead from the bottom of the flutes to the chambers 40 in the lowerends of said plugs. These chambers, in turn, communicate with the branch pipes 15 through circular openings in the cup supporting plates 10, and the intermediate plate 6 of thecup holders. Thus, with this arrangement, whenone or the other of the plugs is forced axially into a hot cup, the taper of the inner surface of the cup is maintained or becomes the same as the taper ofthe plug and the inside/die ameter of the cup will be increased more or less according is forced into the cup. The action of forcing the plugs into thecups causes the stud screws 41 on their lower ends of the plugs to engage the upper ends of the valve rods 24, thus forcing the engaged valve rods downwardly and forcing their taperedhead portions off the beveled valve seats in the valve 16. Thisopening of the' valves permits the quenching. liquid to flow from the branch pipes through the valves and "thence upwardly through the pipes 19 into the circular openings in the intermediate plate 6 of the holders. Part of the quenching liquid flows through the horizontal ports 21 in the intermediate plate 6 in the holdr and enters the vertical ports 22- which connect therewith, and openings 23 against the outer surface of the cup. Thellquid is also forced upwardly through the central opening in the interme- The-liquid is then forced through thediate plate 6 and the central opening in the cup supporting plate 10 into chamber 40 in th plug.

horizontal ports 44, which lead from the hollow chamber 40 of the plug to the bottom of the flutes 43' formed in the outer surface theree lower. end of the of,-and is directed against the inner surface carried away After the valves 16 to the distance the plug forces the ball-checks 17 is forced through the jet the hollow 3 111g and straightenin of the cup. The annular flangell of each cup supporting plate 10 is provided wlth a,

series of vertical notches which perniit the quenching liquid to drain off the cup supporting plate into the circular opening in the top of the holder. Whenithe expanding plugs are raised, the .cups cling to their. tapered ends and are stripped therefrom in the previously described manner. When e valves are opened, and the liquid is be ing directed against the inner and outer surfaces 'of the cup, the liquid which accumulates in the central opening in the holders drains into the pan 3 through the series of drain openings 27' in the top members 5 of said holders. The liquid in the pan is then by means of a waste pipe 28. This raising of-the plungers or plugs 30 also releases the valve rods 24 and the pressure of the liquid on the lower ends-of the valve rods forces the beveled heads of the valve rods againsttheir tapered valve seats, thus closing the valves fiow of liquid to the quenching devices 4. quenching liquid standing in the cup holders and in the pipes horizontal pipe '18, which connects the valves andthence through the pipe 29 into the waste pipe 28. The pressure of the waste water is so slight that the liquid passes around the ball-checks 17 without forcing the same against its seat to close the pipe 18..- When the valves 16 are open, to permit the liquid to enter the cup holders, the flow of liquid through the valves against their seats,

have been closed, the

16 and stopping the I thus closing the pipe 18 and preventing flow drain pipe 28., It is noted t at the liquid supply system will operate successfully without: the use of ball-checks but with a greater waste of quenching liquid.

The slide bars'31, to which the expanding plugs 30 are secured, are simultaneously raised and. lowered by means of a duplex toggle so that one bar is in it's uppermost position and the other most position at the end This toggle comprises a 46 and a pair of lower cent ends of the upper and lower lirks of each toggle being. pivot a'lly secured together; and the lower ends of the lowermost links-are pivota-lly connected with the upper ends of the slide I '0ds'31; The upper ends ofthe upper links 46 of each toggleare pivotally secured to across-bar of the frame 3 by means of anchor brackets 46. The upper and lower links ofeach toggle are connected at their point of means of a connecting link 48; Power is applied to the points ofjunction for bendthe toggle links by y. moving yoke. This of their movement. pair of upper links links 47, the adjameans of a horizontal of liquid from the supply pi e 13 into the I bar is in its lowerjunction by the yokes are slidably mounted in bearings site horizontal yoke comprises horizontally disposed spaced parallel slide rods 49 Whose opposite ends are connected by means of vertically disposed cross-arms 50. The slide bars 49 of 51, which are bolted'or otherwisesecured to the open frame 33.

This yoke is alternately shifted in oppodirections by means of a cam 52 which is fixed to the outer end of a horizontally disposed cam shaft 53. This camshaft 53 is journaled iin bearings 54: formed therefor in the. open frame. The cross-bar 50 of the, yoke located nearest the double toggle is connected to one end of a horizontally disposed slide bar 55 which 55 secured to the side works in the bearing The other end of this of the open frame.

slide bar is connected to the links of the nately sliding the nearest toggle at their point of junction by means of a link 56. The cam 52 on the cam shaft 53 is located between the cross-bars 50 0f the yoke. Each of these cross-bars has a cam roller 57 journaled therein. One of the cam rollers is engaged by the peripheral edge of the cam plate 52 during each half revolution of the cam shaft, thus alteryoke' in two opposite horizontaldirections during each revolution of the cam shaft- This movement of the yoke,

by reason ofits connection with the duplex in vertical alinement therewith.

' toggle,

causes the toggle links to alternately bendand straighten and the expanding plugs to be alternately raised and lowered. 'The, cam shaft 53 is driven from a horizontally disposed drive shaft 58 journaled in bearings 59 secured to the table 1 of the machine. This drive shaft is provided at its outer end with a has a drive pinion 61 secured thereto. Thisdrive pinion meshes with a gear 62 which is rotatably mounted on a parallel counter shaft 63 located-beneath the cam shaft 53 One end of this counter shaft is journaled in ja bearing. 64 secured to the table and'its opposite 4 end portion is journaled in spacedupright drive shaft 58, but no movement is imparted which action slides the clutch a side members 33 of the open frame 33.

small gear 65 is keyed to the counter shaft 63 and is located between the side members 33 of the frame. This gear meshes eonstantly with a large gear 66 fixed to the cam. shaft 53. The large gear 62 of the counter shaft is constantly driven by the drive pinion 61 on the consta'ntlyrotating to .the counter shaft 63 by reason of the is provided at one end with clutch jaws 67 7 adapted to be engaged by smaller clutch jaws 68 formed on the .adjacent end of a I This clutch member is splined on the counter shaft 63 to rotate with the same when the clutch is drive pulley 60 and thrown into engagement with the constantly rotating gear 62. This forms a double reduction drive gearing for the cam shaft.

The sliding clutch member 69 on the frame 33. This lock rod is located directly above the sliding clutch 69 and is provided at its upper end with a weight 72 which normally holds its lower end incontact with, the cylindrical surface of said clutch. The lower end of the lock rod 70 has a cam roller 73 journaled thereon whose cylindrical surface is adapted to be engaged by the adjacent beveled side edge of a cam lug 74. formed on the cylindrical surface of the clutch 69. The end of the clutch, adjacent to one of the upright members 33 0f the frame 33 is provided with a series of cylindrical bores in which are mounted's'tuds 75. The inner end portions of these studs are reduced and have springs 7 6' sleeved thereon, the opposite ends of said springs bearing against the respective inner ends of the bores and the shoulders formed by the reduced portions ofthe studs 75,. These studs bear against a hardened circular disk 77 located between the adjacent upright frame member 33 and the adjacent end of the clutch 69. Thus, the studs mounted in the clutch member are pressed against the disk ment with the gear! 62 and couple said clutch and said gear together. The clutch I is held out of engagement" with the gear 62 by the lock rod 70, the cam lug 74 of the clutch bearing against the cam roller 73 on the lower end of said lock rod. When the lock rod 70 is lifted from its position in front of the cam lug 74, this action; permits the spring pressed studs 75 to force the clutch into engagement with the gear 62. This causes the cam lug 74 to move into a v position beneath the lower end of the look A rod and, during the rotation of the, clutch,

the cam lug travels beyond'the lower end of the lock rod and thus permits the lower end of the rod to engage the cylindrical surface of the clutch. Continued rotation of the clutch causes the cam lug to rotate with the clutch and to be brought around into a position which permits its beveled edge to on the lock rod,

distance along the shaft to uncouple said clutch from the constantly rotating gear 62. The clutch 69 is uncoupled from the rotating gear 62 during every complete revolution thereof and is always stopped with its cam lug in position behind the lock rod 70 by means of a spring pressed stop pawl 78 and a stop disk 79. The stop disk 79 is engage the cam roller rod 81.

latch rod to edge is provided with two oppositely disgosed notches 80 which are spaced apart 180 egrees. The stop pawl 78 is pivoted to the frame 33 and is provided with a catch at one end which normally engages one of the notches and prevents, rotation of the cam shaft in its direction of rotation. The notches 80 formed in the stop plate 79 are shaped-after the manner of ratchet teeth whereby when the latch endof the pawl 78 is lifted outof one of the notches, the cam shaft is permitted to rotate 180 degrees be fore it is again stopped by the action ofthe pawl engaging the other notch when said f notchreaches a end of the pawl. v

The pawl 78 is withdrawn fromv engagement with the notches in the stop disk to permit the cam shaft to rotate, and the stop position beneath the latch rod 701's lifted 'from'its position in front t of the cam lug 74 on the clutch 69 to mit the clutch tobe coupled with the 62, by means of perg r a vertically disposed latch This latch rod is made in twot'ions, the upper section being connected to the pawl 78, upper and lower sections of the latch'rod have a slot arm of a horizontally disposed yoke lever 82.

The opposite end of the yoke lever 82 is bifurcated to embrace the lock rod and is located beneath the weight 72 on the upper end of said lock rod. This yoke lever is fulcrumed on a pin mounted in spaced lugs 83 which progect'upwardly from the bearing 71 in which the lock rod is slidably mounted. The adjacent ends of the upper and lower sections of the latch rod are secured togetherby means of a pin 84 which extends through a slot 85 inthe adjacent end cf the yoke lever 82. Thus, when the latch rod is raised, the slot 85 permits the be raised and liftthe pawl 78 out of the notches of the stop disk 79 before the yoke is actuated to lift the lock rod 70. The latch rod is normally held in its upperto hold the clutch 69 in its uncoupled posi tion by means of a coil spring 86. This spring islsleeved on the lower section of the latch rod. The lower end portion of the rod extends-through a hole in the table latch against the underside of a collar .87, which is secured to'the latch rod, thus normally holding the latch rod "n elevated position.

3 The latch rod is depressed to'release the cam shaft 53 and the clutch 69 by means of a horizontally disposed foot lever 88. Themiddle portion of this lever is pivoted to the middle one of the standards 2 which support the table 1. The forward end of the foot lever 88 is provided with a foot pedal por- .the latch rod lifts the latch en sec-- and-the adjacent ends of the and p1n connection with one' the cam shaft 53 andeter.

toggle link whose tions of rest, the operation of the machine is as follows: The hot cup as it comes from the hardening furnace is placed in one of the cup holding and quenching devices 4: beneath a raised expanding plug 30. The operator then depresses the forward end ofthe cotv lever 88, thus raising its rear end, which is connected to the inner end of the lever 89 y .means-of the link 90. This forces the inner ann of the lever 89 upwardly and causes'its outer arm; which is connected 'to the lower end of the latch rod,

0 swing downwardly and pull down the latch rod 81. This downward movement of 78 from out of engagement with the notch in the stop disk 79,"thus unlockin the cam shaft 53. Further movement 0 the latch rod actuates the yoke lever 82, caus-- ing its bifurcated end portion to engage the weight 72 on'the lock rod 70," thus raising the same from its position in front of the camlug 74 of the clutch member 69. This unlocking of the clutch permits the spring pressed pins 7 5 to slide the clutch along the counter shaft 63 and force said clutch into engagement with the constantly driven gear 62 on said counter shaft.

This gear 62 is driven from the drive shaft 58 at a reduced speed by means of the smaller drive gear 61, preferably at the ratio of 2 to l. he pinion gear 65 on the counter shaft drives the larger gear 66 on the cam shaft at a reduced speed, the ratio also being 2 to 1. The rotation of the cam shaft causes the cam 52 fixed to its forward end to engage the cam rollers 57 of the yoke, thus sliding-the same in a horizontal direction. This sliding of the yoke in either direction, by reason of its connection. with the double toggle links, stra-ightensfone set and breaks the other. This action causes the expanding plug 30 of the straightened toggle link to move downwardly and engage the cup mounted on the holder located below, thus expanding the cup to the desired diam- This-downward movement of the ex panding plug also depresses the valve rod 24, thus opening the valve 16 and permitting a stream of quenching liqu1d to be directed against the exterior and interior surfaces of the engaged cup. Thus, whilethe parts are thus assembled, and preferably while the pressure on the inner plug is still maintained, they are submerged in the quenching liquid. During this action, the joint has been broken,

d of the pawl,

, raises the other of the releasing the valve rod 24 operated thereby expanding plugs, thus and cutting off theflow of quenching liquid to the quenching device in which said plug works. This upward movement of the expanding plug causes the stripper sleeve 36 to strike the under side of the cross-arm of the frame, thus causing the cup to engage the lower-end of the stripper and be forced off the tapered end of said plug. On account ofthe taper of the plug, the quenched cup can bestripped therefrom without injuring the inner surface thereof. The cup is then removed and the new cup is placed in position beneath the raised plug and the foot lever actuated and the hereinbefore described operation is repeated.

B reason of' the arrangement of the camlug 74 and the lock rod 70, the clutch is disengaged from the constantly rotating gear 62 on the counter shaft 63 after each complete revolution.- Thus, for each complete revolution of the counter shaft 63, the cam shaft 53, by reason of the reduction gears 65 and 66, is rotated one-half revolution. This permits the pawl 78 to engage a notch 80 of the locking disk 79, thus locking the cam shaft 5'3 after each 180 degree rotation and holding .the

its stroke. This locking of the cam shaft also looks the'counter shaft and holds the k lug 7 4 of the clutch 69 in position behind the weighted stop. rod 70. I

It is noted that the mechanical expansion of the wall ofthe cup has a tendency to produce' true circularity. It is also noted that,

. whether the hot cup is mechanically expanded by the plug or not, the tendency of the cup to shrink 1n quenching causes said cup to conform to the accurately finished surface of the plug and maintain the proper concentrfcity and taper of the inner or bean ingsurface of the cup.

he outer surface ,of the cup may be also restrained during the quenching operation if desired. 'In case it is desired to grind the .outer surface after the cup has been hard ened, it is. preferable. to quench ,the inner surface before submerging the entire cup. The margin of theblock is fluted in a manner similar to the flutes 43 in the tapered ends of the. plugs 30' and the bottoms of the flutes have ports that open into a hollow chamber in the middle of the block, which ficiently small" to not materially chamber in turn communicates with a suitable source of quenching liquid and means for'forcing' it through such ports at will. By'this arrangement, the inner surface of the cup is subjected to the action of streams of quenching liquid throughout its entire surface except for the intervals between adjacent'flutes; and these intervals are sufchange the concentricty of the surface. After this'initial hardening of the inner Surface,

tained throughout yoke 82 at the end of hardening furnace, is

the whole cup is submerged in quenching fluid as above described. p

In the case of cones, the outer surface is the bearing surface and is the one that requires hardening. For the treatment of cones, it is preferable to form the cone with a slightly tapered bore, must be subsequently reduced or eliminated to suit the requirements of the finished cone. When the cone is ready for quenching, it is placed over a slightly tapered plug adapted to fit its bore. A die block with conical ribs of the proper taper to bear against the outer surface of the cone is then placed over the cone and maintained in contact therewith during the quenching operation. This die block has a number of ports opening radially in the flutes between ribs,

ing liquid. Means similar to that shown in the accompanying drawings may be used for controlling the flow of quenching liquid. In operation, the heated cone is mounted on the tapered plug and the outer conical die block is placed over the cone and in contact therewith, and pressure (which may be only the weight of the heavy die block) is main the quenching operation. The source of liquid supply isthen manipulated so that streams of quenching liquid are sprayed. on to .the outer surface of the cone except for the narrow spaces covered by the ribs of the die. block. hen the entire device is submerged in quenching liquid. On account of the taper of the plug, the cone can be easily removed therefrom, just as it is an easy matter to strip the quenching cup which ports communicate with a suitable source of supply of quencheven if the taper from the tapered block on which it shrinks,

In some instances it maybe desirable to form the cups with tapered outer'surfaces as well as with tapered inner surfaces. In such ease, the hot cup, as it comes from the dropped into a tapered die block, preferably of the same tape-r as i the exterior surface of the cup ,and otherwise adapted for the cupto fit. A conical metal plug of the same taper as that desired for the inner surface of the cup is then forced axially into said-cup, whereby the taper of the inner surfaces of the cups is maintained or becomes the same as the taper of the plug, and the inside diameter of-the cup will'be increased more or less according to the distance the plug is forced through the rings. During the quenching operation. the outer surface of the cup is preferably restrained by its fitting in the taper of the die block, this fit being itself maintained by the tendency of the cup and plug to slip downward in the die block (under pressure or even by their own weight) and thus automatically compensate the metal incident to quenching. By the arrangement described, the outer .surface 0 the cup conforms to the taper of the die forany shrinkage of tapered bore conforming to the for a ring and cup, and means for block and takes the diametepthereof; but it is obvious that the die block may be dispensed with and the tapered plug used alone to give the inner surfa-ce of the cup the desired taper and size.

What I claim is:

l. A device for quenching metal rings, said device comprising a. stationary holder a movable plug adapted to enter the bore thereof and enlarge the saine to size, said holder and said movable plug having ports communicating with a source of quenching liquid, and means actuated by said plug for controlling the flow of the liquid to said holder and said plug during the engagement of said plug with the ring, whereby said plug actuates said controlling means and permits the quenching liquid to be directed against the exterior and interior surfaces of'the ring through the ports of the respective holder. and plug.

2. A device for use in sizing and quenching conical cups which consists of a tapered plug, means forproducing relative movement of said plug axially with respect to the cup under treatment, said plug having .a portion of its outer surface of the size and taper desired for the inner surface of said the plug into contact with the inner wall of said cup and keeping them in contact dur ing the quenching operation.

3. A device for use in sizing and quenching cups for conical roller bearings comprising a support for an unfinished cup, a tapered plug movable axially with relation to said cup, and means for limiting the movement of said plug, saidplug having a portion in contact with the inner wall of said cup whenthe plug is at the end of its effective stroke and said portionbeing of approximately The size and taper desired for said cup. i 4. A device for use in quenching hollow conical bearing parts consisting of a tapered inner member and an outer member with a inner and outer peripheral surfacesrespectively ofthe bearing part to "be produced and means for pressing said members towards each other to a predetermined extent for sizing the bearing part between them and for maintainin therelation of such members during the quenching operation.

5. A device for use in quenching cups for conical roller bearings consisting of a conical taper die block adapted to fit the outer surface of the cup and a tapered block adapted to fit the inner surface of the cup,"a-nd means for pressing one of. said members axially relatively to the other and means for predetermining the relative movement of .said members so as to size a cup between them. 7

6. A device for use in sizing and-quenchbringing said portion of ing cups for conical roller bearings comprising an outer member having a conical socket of approximately the size and taper desired for the outer surface of the cup and an inner member concentric with said outer member and relatively axially movable with relation thereto, said inner member having the portion of its outer surface that is in contact with the cup at the end of its efi'ective stroke of approximately the size and taper required for the inner surface of said cup.

use in quenching cups for conical roller bearings consisting of a conical taper die block adapted to fit the outer surface of the cup, and a tapered .block havinglongitudinally disposed ribs adapted to fit theinner surface of the cup and inclined with relation to axial planes passing through them respectively. 1

device for use in quenching cups for conical roller bearings consisting of a conical taper die block adapted to fit the outer surface of the cup, and a tapered block having ribs adapted to fit the inner surface of said cup and having portsin the spaces between ribs communicating with a source of quenching liquid.

. device for use in quenching cups for roller bearings consisting of a conical taper die block adapted to fit the outer surface of the cup, and a ta ered block hav ing ribs adapted to fit the inner surface of said cup and having ports in the spaces between ribs communicating with a source of 1 quenching liquid, and means for submerging said device in quenching liquid.

10. A device for sizing and quenching metal rings and the like, said device comprising a holder for a ring having ports communicating with a source of quenching liquid, the flow of of quenchln liquid to said holder when gal p ug completes the expansion of said ore.

means arranged to be actuated by said plug ile in engagement with the ring for permitting the flow'of liquid to the ports of said holder and. said plugs, whereby the quenching liquid is directed against the intenor and exterior surfaces of the ring. 12. A device for quenching hollow metal articles, said device comprising a support for an article and a power actuated plug adapted to enlarge the bore of such article,

35 cally operated plug adapted to enter the .bore thereof and enlarge the same to size plug.

such enlargement of the bore and the flow of liquid is stopped when said plug 1s withdrawn from engagement with said article.

13. A device for quenching metal rings, said device comprising a holder for a ring, a movable plug adapted to enter and size the ring, said holder and said plug having ports communicating with .a' source of quenching liquid, and means operated by said plug for controlling the flow of the quenching liquid to said holder and said '14. A device for quenching metal rings, saiddevice comprising a stationary holder fora ring and a movable plug adapted to enter the bore thereof and enlarge the same to size, said holder and said movable plug having ports communicating with a source of quenching liquid, and means actuated by said plug for cont-rolling the flow of the liquid to said holder and said plug during the engagement of said plug with the ring, whereby said plug actuates said controlling means and permits the quenching liquid to be directed against the exterior and in- 'terior surfaces of the, ring through the ports of the respective holder and plug and, when said plug is out of engagement with said ring, the flow of liquid to said holder and said plug is stopped.

' 15. A device forquenching metal rings comprising a holder for a ring and a vertithe ring, said holder and said plug having ports formed therein adapted to communicate with a supply of quenching liquid, and control means for normally stopping the flow of quenching liquid to the ports of said holder and saidplug, said control means being adapted to be actuated by said plug when in engagement'with the ring to per-,

mit the quenching liquid to flow through the ports of said holder and said plug and be directed against'the exterior and interior surfaces-of the ring.

16. Adevice for quenching'metalarticles comprising a pair of supports for an article and a pair of movably mounted members adapted to engage said articles in one posi- -tion of their movement, and spraying devices-for directing quenching liquid against the articles on each of said supports, said spraying devices communicating with a source of quenching liquid, and normally closed means for controlling the flow of the quenching liquid from said supply source to sald spraying devices, said means being actuated by said movable members when said members are in engagement with the article to permit the flow of liquid to said spraying dev1ces.

v alternately raised adapted to receive a ring and a pair of vertically movable plugs adapted to fit within rings, said holders and said plugs having ports adapted to communicate with a source of quenching liquid, ,and normally closed control means-for controlling the flow of the liquid to each of said said plugs, said plugs being adapted to be and lowered and 'each being adapted to actuate the control means when in engagement with a ring to permit the flow of liquid -'to saidholders and said plugs, whereby liquid is directed against the exterior. and interior surfaces of said rings. 18. A device for quenching metal rings and the like comprising a pair of holders adaptedto receive a ring and a pair of vertically movable plugs adapted to fit within rings, said holders and said plugs having ports adapted. to communicate with a source holders and each of from said plugs during the 19. A device for quenching metal rings and the like comprising a pair of holders adapted to receive a ring and a pair of vertically movable plugs adapted to fit within rings, said holders and said plugs having ports adapted to communicate with a source of quenching liquid, and normallyclosed control means for controlling the flow of the liquid to each of said holders and each of said plugs, said plugs being adapted to be alternately raised and lowered and each being adapted to *actuate the control means when in engagement liquid to said holders and said plugs, whereby liquid is directed against the exterior and interior surfaces of said rings, means for with a ring to permit the flow of to said quenching control means for controlling thefiow of liquid to said quenching device, said control means'being adapted to be actuated by said plunger when said plunger is in engagement With the article to permit the flow of liquid device.

21. A machine for sizing and quenching metal'rings and the like comprising a table, a quenching device mounted on said table and communicating with a source of quenching liquid, a vertically movable plunger adapted tobe forced axially into a ring, a

toggle operatively connected to said plunger or raising and lowering the same, a yoke operatively connected to said, toggle for actuating the same, a cam for actuating said yoke, means for rotating said cam, and" means for automatically locking said cam when the plungeris in raised and lowered positions. respectively.

22. A machine for sizing and quenching metal rings and the like comprising a table,

- a quenching device mounted on said table 25 and communicating with a source of quenching liquid a normally closed control device lling the flow of the liquid to said quenching device, a vertically movable plunger adapted to be forced axially into a ring, said plunger being adapted to actuate the control device when in engagement with said ring to permit the flow of liquid to said quenching device, a toggle operatively connected'to said plunger for raising and lowering the same, a slidably' mounted yoke opera'tively connected to said toggle for actuating the same to raise and lower said plunger, a rotatable cam for actuating said toggle, continuously operating drive gearing, a clutch device for operatively connecting said rqtatable cam with said drive gearmeans for automatically disengaging clutch from said drive gearing when the plug is in its uppermost and lowermost positions respectively, and means for automaticallylocking said cam'and said clutch when the plunger is in eitherits raised or its lowered position.

23. A machine for sizing and quenching metal rings and the like comprising a table, -a pair of quenching devices mounted on said table and communicating with a source of quenching liquid, a normally closed'control device for controlling the flow of the quenching liquid to each of said quenching devices, vertically operating plugs located above each of said quenching devices and adapted to be forced axially into the ring on the respective quenching devices, said plugs being adapted to actuate the control device of the respective holders when in engagement with the rings to permit the flow of liquid thereto, devices on said plugs for automatically stripping the rings therefrom, a' double toggle operatively connected to each of said plugs for, simultaneously raising one and ing, said lowering the other, a slidably mounted yoke operatively connected to said double toggle foractuating the same, a rotatable cam for actuating said yoke, continuously rotating drive gearing for rotating said cam, a normally disengaged clutch member for connecting said drive gearing to said cam, and means for automatically diengaging the clutch means from the drive gearing when the plugs reach their uppermost and lowermost positions, and means for automatically locking said camand said clutch to hold the plungers in said positions respectively.

Signed at Canton, Ohio this 18th day of March, 1920.

MARCUS 'll. LOTHROP.

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