US1366152A - Dipping and quenching arrangement for metal bars or other metal articles - Google Patents

Description

I. R. C. AUGUST.

DIFPING AND QUENCHING ARRANGEMENT FOR METAL BARS 0R OTHER METAL ARTICLES.

1. R. c. AUGUST.

DIPPING AND QUENCHING ARRANGEMENT FOR METAL BARS 0R OTHER METAL ARTICLES.

APPLICATION FILED MAY 8.1920,

1,366, 152.- Patented Jan. 18, 1921.

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MMM/MW 1. R. C. AUGUST.

DIPPING AND QUENCHING ARRANGEMENT FOR METAL BARS 0R OTHER METAL ARTICLES.

APPLICATION FILED MAYA |920.

1,366,152. L Patented Jan. 18,1921.

4 4 sHfETs'sHEeTa J. n. c. AUGUST. l DIPPING AND QUENCHING ARRANGEMENTFOR METAL BARS 0R OTHER METAL'ARTICLES.

APPLICATIUN FILED MAY B. 1920. I

A 1,366,152. Patented Jan. 18,1921.

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ARTICLES.

Specification of Letters Patent. Patentgd J 1L 1S" 1921.

applicati@ filed nay s, 192e. sei-iai No. erases.

Toallan/Lovettmay concern.' i .i y y lle it known that l, ,foiiiiniiis Bonnin @aan iincns'r, a subject ofthe -King of lnlreat Britain, residing in Halifax,` Yorkshire, in the Kingdom of England, `haveinfvented certain new and useful Dipping and tdiienching ^irrangements for Metal Bars or other Metal-Articles, of `Which the folloiving is a specification.

llhis invention relates to iniprovel'nents in apparatus for annealing, tempering or i otherwise modifying the physical characters One of the objects ofthe contrivance to enable long thin bars to be handled separately instead of in bundles, thereby giving uniform results in the heat treatment and keeping the bars asst aight as possible. .Y

My improved dipping arrangement is cxtreniely convenient in handling heavy sec-` 'tion bars, and the bars are notreleased by carriage with itsplatfformor trough; y

` the dipping arrangement until just clear of the oil, thus avoiding exiressive splash. By the bars becoming submerged perfectly level in the oil, warping is reduced to a minimum, also excessive Waste and combustion of the oil is prevented by the bars being quickly covered, thus showing` a large sav* ing `in oil. rllhe` dipping arrangement is combined With a shaking gear inthe oil tank, whereby the `articles are kept iii-motion iii the oiland insuring a uniforin cool` ing ofi. Y u

The invention is characterized by the combination with a furnace or fiiriiaces` in `which the heating of the metal bars or other or trough into alineinent With` the furnace so that the heated y `bars can `be directly charged thereonto, andbe then conducted into a position directly above the .dipping tank to drop the bars into it. The platform ortrough is longitudinally divided into two `portions, pivoted to the carriage, the two ialves` being ar 1anged so asto be maintained horizontal. or approximately so, With then' meeting edges in contact or iieailyso,

ivhenfiii position to receive the `hot bars,

etc., but adapted to tilt or dip down on their pivots 4so as to open andassuine an inclined position when releasing hot bars into the quenching tank. In combination with'the interior of" the quenching tank,` a dipping -`tray is `provided onto which the bars are discharged from the platform `or trough, 3 such dipping device being given by suitable gear, an up and down inotion in the tank,

y or raised up clear ofthe liquid in the tank so as to drain and allow tliebars to be removed. y

`The invention will be understood froin the following description,.reference being had tothe acconilfianying drawings in whichliigure l is asideelevation of the apparatus;

. 2 is an end elevation ofthe dipping tray in the tank together With the apparatus l tor giving it an up and down motion inthe tank or holding it clear of the liquid.

Fig. 3 is an end elevation of the traveling `lig'. fl is an end vievv of the platform or .trough on` a larger scale show-ing the two parts 11i their iilosed and openposition;

`my apparatus applied thereto.

Referring to? these drawings Il is the `fuinace or furnaces in `which the heating of the metal bars "or other articles can be carried out, Qis the oil tank or tanks in convenient proximity to the said furnaces "in'wliich the dipping orouenching of such heated bars takes .plafce,`3,'4e, is the platform ,ortrough supported bya suitable carriage 5,. 6, adapted to travel along track such as 7, and arranged to bring an empty platform vor trongli into alinement `with the furnaceso ico` that the heatedbars can be directly charged thereunto and bethen conducted into a `position directly above the dipping tank.` "The platform ortrough is longitudinally divided into tivo portions .3, et pivoted to the carriage 5, (S, at `8, `9, the two halves ben 'position to receive the hot` bars etc., but

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other, when pushing power is applied at one 'end and-consequently wedge the wheels on the` track. This carriageV is composed of twoy opposite depending hangers 5, 6 more orv less converging toward each other below. These hangers and 6 are suitably stayed together with cross stays l2. The

tWo halves 3, 4, 'of the platform are pivoted atv each side to the respective hangers by thepivotal` rods 8, 9, and counter weights aregprovided to maintain the platform in thefclosed position. Theplatform members '1 are arranged towork in any suitable way,

as for,instancemounting bell crank levers '14 on lpivot pins 15 also secured to the hangers at the ends thereof, and by mounting other bell crank levers 16 on pivot pins 1T also secured to the yhangers at the end thereof, and connecting one arm ofthe bell crank levers 14, 16 together by connecting rods 18 .and*connecting` the other arm of the 'said 'bell crank levers to crank arms 19 proyecting from the respective longitudinal ypivotal shafts 8,-9. The pivotal shaft 8 is provided with a crank handle 2O and the sha i't 9Y is 'provided'with asimilar handle, and by operating either handle, the platform inem- ` bers 3, 4 are arranged 'to'work in unison vthrough being connected by the connecting links and cranks aforesaid. Counter weights 4'? are provided to maintain the platform members in the closed position, and 'fast-ening devices mayalso be provided to keep them closed.' Each Vhahe ofthe pivoted divvided platform consists of a plate or ' plates 3 and 4 and aseries otngers 21,

'V22 extending'beyond the meeting or adja- .cent-edges ofY the plates, the lingers 2l of lone platform portion alternating with and beingxoppositely directed to the` fingers 22 Aof the4 other platform portion, so that when the twov portions Vare horizontal or approxi- `fmately s0, theyl forni a trough the plates Y of which form the'floor for the bars to rest on, whilewhen the two halves are turned into an inclined position, the lingers as well @as the plates Aform inclined planes down y which the hot bars slide into the oil in the quenching tank, the wedgev formation assuined by the intermeshing lingers in their l inclined position, having a tendency to straighten thebars as they are released and yinsure vtheir entering the oil perfectly level, so that warping isreduced to a. minimum.

Means are provided to keep the articles in motion in the oil to insure uni-term cooling olie. For this purpose e., dipping` 'irai' 25 is given an oscillai'oiy or shaking more nient in the tank. The tray 2.3 is sliepen-1led at each end from vertical rod QC `vhieh may be actuated by a crunk, cam, or in any other suitable manner. For enannrile, the vertical rods 2G are connected above. 'to vertical bclts or orde E27 runnino over guide rollers or pulleys QS and pu: ed over pulleys 29 mounted on crank pins on di: ks llll keyed to a shaft 31 and driven by an overhead belt pulley 32, the other end oli lhese.

belts or cords being secured at the points il?. Suitable clutch gear ll is provided for throwing the said shalt ll into and out oiI operation. This clutch gear can be operated from the iloor level through the inediuin oi" a chain the three armed rocking.' lever 35 and roi. 2l lly these means the dipping tray may be rapidly raised and lowered, say about thirty times per miuute, thus insuring the hot bars being uniformly cooled. Any suitable. means may he provided to allow the dipping tray to be suspended in its top position without lhilling back owing to its weight and the weight of the material on it. For this purpose each crank disk may be provided with a ratchet tooth or teeth 38 ivhivh euu be engaged by a pawl 39. lhc crank diskseould be made with ratchet teeth all around their periphery, or at one portion thereof. or the periphery of the crank disks 'would be filled at a suitable position with a :-top. sui-l1 as a set screw cham'fercd on one side. or made with a notch in which the paul is adapted to engage in order to hold the tray in its raised position. @ne end of the belts '2T or the like is connected at 3? to an fuif/hor lever 40 iointed to :1 long depending arm 41 which can be locked by suitable means in any desired position. lllhen the cooling is iiHiShed, the tray is stopped in il. rai-ed position and held there by the pawl und ratchet or other locking device. lli' loosening the anchor lever andy pulling.,Y u down to the required extent into say the por-.ition shown by the dotted lines the (liiuiirfitray can be raised above the quenchingianli clear of the oil, and the tray is thru le': there to drain. The anchor levers are pre erably weighted so as to balance the tray when empty.

The depth of immersion of the tray in the dipping tank can be regulated by the saine device namely by taking up more or less oi' the belt 27.

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I provide suitable means .lor circulating;

tanks. 'In `such an arrangement, for exain `ing tanks, and any desired number ot such tanks may be used, whichmay b e connected together in series. The hotoil` which is taken from the upper part of the dipping tanks Qiby a pipe such as 42,is pumped b y a suitable pump to the top of the -tirst cooling tank 43 and passes through acoil or worm in the said cooling tank to the bottom thereof, and then by a straight pipe up the center of thetank to a second tank 44 and is then forced down the coil in that tank and up the center oil the tank through a pipe to the next tank 45 in the series and so on and then back to the lower part of the. dipping tank by pipe 46. The cooling tanks are preferably arranged at a higher elevation than the quenching tanks 2, and where the plant comprises a series of dipping or quenching tanks 2 as in Fig. 5 the respective dipping tanks 2 are connected by `branch pipes to main `pipes carrying the hot and cold oil. The pump may be inserted at any suitable `point in the pipe system, preferably in the hot oil pipe between the quenching tanks and the cooling tanks.

In action a carriaoe is caused tobring an empty platform or trough into alinement with a furnace so that heated bars can be directly charged thereunto. The carriage with its loaded platform is now moved by rollers on the over-head track so as to bring the loaded trough into a position directly above the dipping tank. The platform `is then opened, and the bars slidedown the inclined support into the quenching tank so as to enter the oil therein. The bars are not released until just clear of thefoil, and thus excessive splash is avoided. The tendency of the inclined fingers is to straighten the bars as they are released, and the bars being preferred perfectly level in the oil, warping is reduced to a minimum.

AThe features oi? construction, advantages, and operation of the apparatus will now be apparent. It is to be understood tliatI do not consider my self limited to the details of construction herein described, as various changes could be readily suggested which, while they might materially` change the appearance ot' the apparatus, would not involve a departure from the scope of the invention herein set forth. Accordingly the relative positions of the various parts may be varied, and instead oit arranging the carriage to run on an overhead track, it can be arranged to run on a track onthe ground level or on i a level with the top of the tanks. Furthermore the apparatus for giving an up and `down finotion to the dipiiiiig carriage can be i modiiech It is to be understood that my inventionhas to underco a certain amount ol' constructional modification to suit thelparticular i local i conditions ot' each place at Whichfitis to he erected/ `1 i I declare that what I `claim is:-..

l. The combination with a furnace or :furnaces in which the heating of metal bars or other articles can be carried out, and fan' oil tank or tanks in i immediate proximity to `the said :turnaces in which thedipping or .quencliingaot such heated `bars takes place,.ot a platform` ortrough supported by a suitable carriage adaptedto travel upon a track and arranged `to bring the empty platform or trough intoalinement `with the `furnace so that the heated bars can be directly chail'ged thereonto, and be then conducted` into a position directly above the quenching tank to drop the bars into it.`

2. A. dipping or quenching arrangement tor metal bars and other articles, comprising a traveling carriage adapted to run on wheels along a track, a quenching tank or tanks for holdingl oil or other liquids, a

platform or trough longitudinally divided into two portions pivoted to the carriage, the two halves being arranged so as to be maintained horizontal or approximately so with their meeting edges in contact or nearly so when in position to receive the hot bars etc. but adapted to tilt up or dip down on their pivotsso as to open and assumefan inclined position when releasing hot bars into the quenching tank.

` 3. A dipping or quenching arrangement for metal bars, comprising a pivoted divided platform made of a i'iat plate or plates, and a series of supporting fingers extending beyond the meeting edges of the plate the bars of one platform alternating with and being wedge `formation assumed by the intermeshin g fingers in their inclined position having a tendency to straighten the bars as they are released `and insure their entering the `oil perfectly level so` that warping `is reduced to a minimum.

4. In a dipping or punching arrangement Stor metal `bars, the combination with the pivoted divided platform of `a link and crank arrangement so arranged that when the two part platform is turned on its pivots it will` work in unison, and a handle in connection `with each part ofthe platform.

5. In a dipping or quenching arrangement 15V Ahave a narrow wheel base'bywhich carriage tank or tanks and a platform supported by a suitablecarriage adapted to `travel along ay track, ofV adipping tray von to `which the bars are discharged fromthe platformv or trough such Vdipping deviceV being given by suitable gear an upV and down motion in the tank, for raised up clear ofthe liquid in the tank so as to drain and allow the bars to be removed.

6. In a dipping or'quenching arrangement ,for metal bars, the combination with an oil tankV ortanks of a platform longitudinally divided into two portionsand a traveling carriage made in braced arch form so as to the two part platform is suspended.

7. In a dipping or quenching arrangement quenching tank or tanks, of a platform longitudinally divided into two portions for bringing the bars to the tanks, and a carriage for supporting the two part platform, such carriage consisting of two opposite depending hangersmore or less converging toward each other below and suitably stayed together.

In witness whereof, I have hereunto signed my name this 19th day of April 1920,

in the presence of two subscribing witnesses.

JOHANNES ROBERT CARL AUGUST.

lVitnesses AUGUSTUS E. INGRAM, R. DE B. NIoHoLLs.

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