US2489166A

US2489166A - Quenching machine

Info

Publication number: US2489166A
Application number: US480508A
Authority: US
Inventors: Frank M Timm; Robert D Gibney
Original assignee: American Steel Foundries
Current assignee: American Steel Foundries
Priority date: 1943-03-25
Filing date: 1943-03-25
Publication date: 1949-11-22
Anticipated expiration: 1966-11-22

Description

INVENTORS.

Nov. 22, 1949 F. M. 'rlMM ET AL QUENCHING MACHINE Filed March 25, l1943 2 Sheets-Sheet l Nov. 22, 1949 F. M. TIMM ErAl.

QUENCHING MACHINE Filed March 25, 1943 2 Sheets-Sheet 2 n! INVENTORS. @gm/f 7%. @fawn 05er @M Patented Nov. 22, 1949 QUENCHING MACHINE Frank M. Timm, Munster, Ind., and Robert D.

Gibney, Calumet City, Ill., assignors to American Steel Foundries, Chicago, Ill., a corporation of New Jersey Application March 25, 1945, Serial No. 480,508

4 Claims.

Our invention relates to a device for quenching springs and more particularly to such a device by which a plurality of volute coil spring may be simultaneously quenched. l

An object of our invention is to provide means for effecting turbulence of the quenching liquid.

A specific object of our invention is to design quenching apparatus comprising a receptacle filled with any suitable quenching liquid such as oil and a header pipe suspended therein, said pipe being provided with a plurality of ports therein, and spring seats disposed around respective ports, extensions being formed on said pipe at opposite sides thereof and disposed in alternate relationship with the spring seats, each of said extensions being provided with a plurality of ports, and additional liquid being pumped through the header pipe and through said ports to effect turbulence of the liquid within the receptacle.

A further object of our invention is to quench volute coil springs by immersing the same in a quenching liquid and pumping additional liquid therethrough while at the same time pumping additional liquid against the external surfaces of said springs.

In the drawings, Figure l is a side elevation of our novel quenchingv apparatus with portions of the liquid receptacle being shown in section to clarify the view, and Figure 2 is a top plan View of the structure shown in Figure 1.

Figure 3 is a sectional view taken in the vertical plane indicated by theline 3--3 of Figure 1, and Figure 4 is a fragmentary elevational View showing in detail the construction of the header pipe illustrated in Figures 1 to 3 inclusive; and

Figure 5 is a fragmentary view comparable to that of Figure 1 but showing a modification of our novel quenching apparatus.

In each of said figures certain details may be omitted where more clearly seen in other views.

Describing our invention in detail, an oil receptacle or tank 2 is filled with oil or other suitable quenching liquid designated 4. Suspended within the receptacle 2 is a header pipe 6 afforded connection at one end thereof by an elbow to a supply line Ill which is connected to a source of liquid such as a supply pump (not shown) The opposite end of the pipe E is closed and is provided with an arm I2 engaged as at I4 with the top of the tank 2 to afford convenient support for the pipe 6. s

A plurality of ports I6, I6 are formed in the top of the header pipe B, and a spring seat I8 is mounted around each port. On opposite sides of the header pipe 6 are formed a plurality of up- Wardly projecting extension tubes 20, 20, said tubes communicating with the pipe 6 and being closed at their lupper ends, and said tubes being formed with a plurality of ports or openings 22, 22 on the sides thereof adjacent the seats I8, I8. It may be noted that the tubes 20, 20 on each side 1of the header pipe 6 are alternately arranged with respect to the seats I8, I8, and the portions of the tubes above the level thereof are spaced from each other at a distance greater than the diameter of said seats in order to permit passage of a spring between the tubes in either a vertical or a horizontal direction, as may be clearly seen from a comparison of Figures 1 and 2.

Beneath the header pipe 6 is a conveyor comprising a conveyor belt 28 of conventionaly form and mounted on a wheel and axle assembly 3U, said belt being rotated in a counter-clockwise direction, as indicated by the arrow in Figure 3, by any convenient power means (not shown), said conveyor serving a purpose hereinafter more fully described.

The receptacle or tank 2 is provided with an overflow outlet 32 connected to any convenient means, such as a pump (not shown), for removing overflow liquid from said receptacle, and the outlet 32 is provided with a strainer 34.

In operation of our novel quenching apparatus,

a heated volute spring 3G (Figures 1 and 3) is ignated 38 to a position on one of the seats I8, I8

and above the associated port I6 in the header pipe, and thereafter additional quenchingfliquid is forced or pumped into the header pipe 5 at an adequate rate to cause the liquid to be urged upwardly through the interior of the spring from the port I5 and against the exterior of the spring from the ports 22, 22 in the adjacent extension tubes 20, 20. In this manner a turbulence is created in the quenching liquid which provides adequate quenching of both the inner and outer surfaces of the coils of the spring. The liquid is prevented from overflowing the receptacle 2 by pumping liquid from the overflow pipe 32 atapproximately the same rate asliquid is pumped into the header pipe 6. In this connection, it may be noted that a rate of eight hundred gallons per minute has produced vvery satisfactory results in actual practice.

After a predetermined period of time, th

spring may be moved in a horizontal direction from the seat I8 between the adjacent tubes 20, 2! and said spring may then be dropped on the conveyor belt 28, a baille 4l) being being provided to prevent the spring from falling behind the end of the conveyor, and it will be understood by It will be understood that; if desired: four;

springs may.` bef. quenched at theasameV time' in. the arrangement shown, although the header pipe 6 may be constructed to quench any desirediz number of springs at the same time.

A modication of our novel quenching' appa'- ratus is shown in Figure wherein; thefreceptacle |82 may be filled with: ai quenchingiiquid` |04, and a header pipe |06' may-"be suspended within said liquid, said pipe being provided with ports |88, |88 and spring seats I IIJ, III) mounted therearound. On each spring seat is a cone member II2 adapted to project within the-assoI ciated spring when the same is positioned upon the;seat H0, said cone member: being'provided with a. plurality of openings; |I.4 |:I 4 through which additionalliquid maybezforcedlby meansV offzthea port I 88 against. the; internal; surfaces: offV ther associated spring;` One-Y each' sidev of; the headerv pipe I |16V andI arranged alternatinglywith theispringsseats` I'I, |:|.0', are a plurality of ex'- tension tubes H6, I I6 serving thek same purposes asfthe corresponding tubes 20, 2010i theprevious: modification.y modification of." our invention shown in Figure 5.' is substantially identical with that disclosed in: Figures 1 to 4 inclusive exceptv for the provision ofthe cone member II'2, saidl cone member serving as a means of' creating turbulencel in the.i quenching: liquid which is urged through the= ports |08, |88 ofthe header pipe'- |06..

It will also be understood'that.although-.a conveyor mechanism is not shownl inLFigure 5, such: af mechanism may readily be.y utilized as` in the modification shown in Figures 1 to 3.

It is to be understood thatwe'do not'4 wish. to be limited bytheeexact embodimentsof thefdevice shown which are merely byway.'r ofv illusL tration and not limitation as variousl and other forms of the device will, of"cours :-;l be' apparent" t-o those skilled' in the -art withoutY departingffrom the spirit'of the" invention or thefscopeoffthe'l claims.

We'claim':

1'. A device for quenchingAw coil springs com.-A prising a receptacle adapted' tov beY filled' with liquid, a headerpipe suspended-therein, saidpipef beingclosed` at'one end thereof, an outlet inl the'y t'op ofsaid pipe, a spring seat mounted onA said pipe aroundsaid'outlet, a plurality of extensionl tubes projecting upwardly from said pipe andspaced about said'seat, said tubes communicating with said pipe and being closed at theirendsf remote therefrom, openings inl eachl extension tube on the side thereof adjacent said'seat, said4 pipebeing adaptedto convey said liquidunder` pressure, and'm'eans' for conveying overflowliqeuidfrom said receptacle, the ltubesl on each-iside? of' the pipey being'spaced a dista1'1ce1from.eachv other greaterv than thediameter of saidA seat; whereby an associated spring mounted' on" said-, seat may be moved laterally of said'pipe'betvveen`- theA tub-es aty either side thereof and: may be dropped toward the bottom of' said receptacle.

2. Ina' device for quenching-volute coil springs;`

Itv will be understood that the a receptacle for containing a fluid quenching medium, a substantially horizontal header pipe suspended therein and comprising a plurality of ports in the top thereof, a spring seat on said header pipe around each port, spaced upstanding extension tubes on each side of said pipe alternate-ly arranged with. said; seats,K ports in saidz. tubes: on thelfzsidesv thereof' adjacent said seats, said pipe being adapted to convey said I: medium under pressure to said receptacle, and

meansior. conveying overflow medium from' said receptacle, the space between the tubes on each side'fofsaidypipe beingggreater than the diameter oflsaidiseat'siwhereby associated springs mounted onsaidseats1may=be=removed therefrom laterally of said pipe between the associated tubes and dropped in said receptacle.

3. In a device for quenching hollow members, a receptacle adapted to contain a fluid quenching medium, a conduit in said receptacle adapted to convey. said :mediumaand comprising a.; port, substantially horizontal seat meansf-around.saidy port; for supporting a member` tube quenched, -and exa tension tubes upstanding; from saidv conduitz around said: seat means; said tubesl comprising ports r in theirsides adj acentfsaid se'atvrneans andi beingrarranged` sopthaty al pairotubesfis5disposed aty each side of said conduit, the-distance between:A thetubes of each pairz;being1.greater thanthe widthof said seati means wherebysaidgmember may be removed therefrom' laterallyfofi said con@ duit between theA associated pairlv of." tubes? and? maybe droppdin saidrecepta'cle'.

4; In a device for.y quenching?hollowi'members;4

ing medium, a conduit in: said,-:receptaclei` adaptedf toconvey said medium'4 and comprising a: port,v substantially horizontal?v seat means; aroundsaidi port forv supporting a member. to be quenched,A and aV plurality' of extension tubes" upstanding from said conduit around" said' seat'means; saidi tubes comprising ports in theirfsides adiacenti said seat means; thef distance@ between'. the tubes atA eacliside-ofthez conduit' beingf greater than-1 the width of said seat means wherebyfsaid'mem'-N ber mayy be" removed therefronr laterally off said conduit between theassociated"tubes' andi may be dropped in said"receptacle:-

FRANK.' TIMM.

ROBERT D. GIBNEY.`

REFERENCESl CITED The followingVA references: are of'frecord.' in'. the; le of' this patent:

UNITEDI STATES PATENTS-- Number Name Date 643,278 Sponsel Feb. 13, 1900 950,885 Wood Mar.v 1, 1910 1,256,482 Foreman Feb. 12, 1918i 1,276,106 Peaseietal'; ,Aug. 20, 1918 1,614,069 Keser'A Jan'. 1'1', 1927 1,730,918' Davis O'ct.' 8, 1929" 1,856,734 Shriver" May'3', 1932 1,858,431 Braddocl'i'et` all May"17, 1932`` 2,061,864v Wells'v Nov. 24',- 1936 2,096,105; Griflith Oct: 19, 1937l 2,228,684' Barnum" J'an. 14, 1941 2,262,811 McDanielsetal. Nov. 18, 1941' 2,305,811 'Oeckl Dec: 22, 19421j