US1498290A - Galvanizing machine - Google Patents

Description

June 17 1924. 1,498,290

H. D. PENNINGTON GALVANIZING MACHINE Filed March 9 1923 v 6 Sheets-Sheet 1 June 27 1924. 1,498,290

H. D. PENNINGTON GALVANIZI'VNG MACHINE Filed March 9. 1923 6 sheets-sheet 2 June 17, 1924. 1,498,290

, H. D. PENNINGTON GALVANIZ ING MACHINE Filed March 9, 1923 6 Sheets-Sheetfi June 17, 1924. 1,498,290

IH.D.PENNHNGTON GALVANI Z ING MACHINE Filed March 9, 1923 Sheets$heet 4 INVENTOR 6 Sheets-Sheet 5 Jil n-ii- Ll-And H. D. PENNINGTON GALVANIZING MACHINE Filed March ,9.

June 17, 1924.

W MK; 7726 June I7 -I9Z4.

' H.D.PENNHNGTON GALVANIZING MACHINE Filed March 9 1923 6 Sheets-Sheet 6 Mvm HARLEY D. PENNINGTbN, OF PITTSBURGH, PENNSYLVANIA, ASSIGNUR TO UNITED ENGINEERING AND FOUNDRY COMPANY, OF PITTSBURGH, YENNSYLVANIA, A

CORPORATION OF PENNSYLVANIA.

eatvamzme M15101 ;r s

I Application filed March 9, 1928. Serial No. 623,947.

and State of Pennsylvania, have invented a new and useful Improvement in Galvanizing Machines, of which the following is a full, clear, and exact description.

The present invention relates to the act of coating sheet material, and more particularly to an improved galvanizing machine, the present application being a continuation in part of my copending application'Serial No.

' 530,505, filed January 20, 1922.

in a galvanizing machine, it is necessary, at frequent intervals, to raise the supporting frame in order to lift the parts carried thereby out of the vat for cleaning. it has he 'etofore been the practice to mount the in tor and the driving connections intermediatethe motor and gearing on the various rolls on a sliding base adapted to be moved towards and away from the rolls by means of a screw. With this arrangement, whenever it was desired to raise the frame, it was necessary to back oil the motor and driving connections by means of the screw. This was not only a laborious operation, but one which required considerable time. Nowin a ma- 3 chine of this character, it is-desi'rable to be able to disconnect the driving means from the rolls quickly, in order to enable raising of the frame. and separation of the rolls and other parts therefrom for cleaning before the hot coating material has had time, to

cool and harden on the parts. An important object of the present invention, therefore, is to provide a machine wherein the driving means can be quickly disconnected from the 40 rolls without the necessity for backing 0d the motor. a

It has also heretofore been the practice to mount the intakerolls directly over the flux box. A serious objection to this arrangement 4 is that the flux splashes up on to the periph- 'through the pot sticks in the quently, another object of the invention is to provide an arran ement of flux box and intake rolls wherein this objection is overcome.

It has further been the practice heretofore to drive one of the exit rolls through the other by means of a gear-mounted on one end of one of said rolls meshing with the gear on the correspondin end of the other roll, said gears being of so stantially the same diameter as the rolls. Now the exit rolls, due to wear and frequent dressings, become gradually smaller and smaller in diameter, and, as their diameters become less, they must be moved relatively towards each other, but where the rolls are directly geared together in this manner, they cannot be moved towards each other, exceptto a very limited extent, and, hence, it isnecessary to chan e the gears on the rolls at frequent interva s, or to replace the rolls frequently, Either rocedure involves great loss of time and arge expense. A- further object of thepresent invention is, therefore, to provide an arrangement for driving the, exit rolls which permits the rolls to move towards each other without the necessity of changing the gears during the life of the rolls.

ltsometimes happens that a sheet passing ides. In such cases, if another sheet is to in behind this sheet, damage to the machine, as well as to the sheets, is likely to occur. Still another object of the present invention is to provide means whereby a workman can instantaneously disconnect the driving connecthe intermediate or bottom rolls may be swung awa from said rolls to facilitate re-' moval of tie latter, and whereby the said worm may be worm shaft.

A'preferred embodiment of the invention is illustrated in the accompanying drawings, in which: v

Figure l is a plan view of the machine,

quickly removed from said 55 by a weighted lever 17 pivoted to t tional view of the machine,

Figure 3 is a vertical sectional View taken on the line III-71H of Figure 1, and lookin in the direction of the arrows;

igure 4 is a fragmentary view, partly in section and partly in elevation, illustratingythe means for driving the intermediate or ottom rolls, i

I Fi' re 5 is a view taken on the line VV of F igure 4,

Figure 6 is a vertical sectional view taken on the line VIVI of Figure 1, and lookin in the direction. of the arrows,

i re 7 is a sectional view taken on the line FTP-VII of Figure 6,

Figure 8 is a view similar'to Figure 7 illustrating the manner in which the exit rolls are permitted to approach each otherv by the gearing arrangement shown,

F igure 9 is a plan view of the driving means and of the driving connections be- .tween the driving means'and the rolls,

Figure 10is a side elevation correspondingi to Figure 9 with the motor removed, an

Fi ure 11 is a view takenon the line XI- I of FigurelO. Y

Referrin to the drawings, the reference numeral 2 indicates the masonry foundation upon which the machine is supported, and 3 the pot or vat forholding the coating bath. I Overlying the pot 3 and resting at its ends upon the foundation' 2 is a rectangular supporting frame 4 comprising parallel side beams 5 and 6 and transverse hollow tie members 7 and 8. The supporting frame 4 is constructed and arrangedto be wholly above the level of the bath in order that the same may not be subjected to the corrosive action of the coating material.

Detachably connected to the side members 5 and 6 and depending into the pot 3 are a pair of oppositely arranged U-shaped roll ousings 9'and 10 for a pair of intermediate or bottom rolls 11 and 12. These rolls are journaled at their ends in upper and lower bearing blocks 13 and 14 slidably mounted in the roll housings. Resting upon the upper face of each upper bearing block 13 is Y a separator plate 15. Each of the separator plates is engaged by the lower. end of a vertically slidable rod 16 suitably guided in the frame 4' and engaged at its upper end e frame at 18, the weightedlevers 17, through the rods 16, separator plates 15 and bearing blocks 13, maintain a suitable pressure between the rolls 11 and 12.

Fixed to one end of. the lower roll 12 is a worm ear 19, and fixed to the other end of the re 1 is a ear 20 meshing with a similar gear 21 on t e end of the up or roll 11. Journaled in a bushing 22, the etter journaled in a bracket 23 secured to the side beam 5, is a short driven shaft 24 having fixed to its inner end a bevel gear 25 in mesh with a similar bevel ear 26 secured to the upper-end of a vertica worm shaft 27. The lower end portion 28 ofthe shaft 27 is reduced in cross section and slidably mounted a wedge member 33 is inserted between the flanges 31 and the bearing member 32, the wedge being secured to the lower end of a rod 34. The rod 34 has a threaded upper end extending throu h an opening in the frame 4, and mounted on its threaded upper end are nuts 35, by means of which the rod is moved longitudinally toadjust the position. of the wed e 33.

Referring to igure 4, it will be seen that gears 25 and 26 and the upper end of the worm shaft 27, is formed integral with the bushin 22. Due to this construction, when the wedge 33 is removed from between the bearing 32'and the flanges 31, and the bear ing 32 removed, the shaft 27 can be swung away from the rolls, as indicated in chain lines 'in Fi re 5. When the. shaft 27 is in this position, the worm 29 can-be removed therefrom for cleaning, merely by striking the same a blow with a hammer, whereupon the worm will slide from the lower end 28 of the shaft. Then,'to remove the rolls 11 and 12 and their bearings from the housings 9 and 10, all that is necessary is to swingthe weighted levers 17 out of engage-- ment with the rods 16, raise or remove the latter, insert a bar under the upper bearings 13 and raise them until they clear the upper *roll 11, whereupon they can he pushed inwardly to disengage them from the housings, then remove the upper roll 11 throu h the window in the housing 10, then lift t e lower roll 12 to clear the bearings 14 and remove it through the window in the housing 10, and finally remove the bearings 14 from the housings, Thus it will be seen thatI have provided means for driving the intermediate or bottom rolls 11 and 12 which greatly facilitates removalof the rolls and their bearings, and also removal of the worm 29. 5

the lower half of the housing 36 for the a 50 and 51.

' eeaaeo flux box, but with this arrangement, the molten material in the flux box splashes up on the rolls and causes their surfaces to become rough and pitted, so that the sheets passing between the rolls are damaged. To avoid this difficulty, I mount the intake rolls 38 and 39 at a considerable distance in front of, as well as above, the flux box 37 and provide guiding means 40 between the rolls and box. With this arrangement, danger of the flux s lashing up over the rolls is practically ellminated.

At the opposite end of the frame 4 are located the exit rolls 41 and 42 and the large roll 48, the latter being journaled in open bearings 44. Arranged in the pot 3 and supported by the frame 4 are the usual guides 45, and suspended in front of'the exit rolls is a plate 46 for protecting these roll}? from the dross floating on top of the bat The means for driving the exit rolls is illustrated in Figures 6, 7 and 8, and comprises a driven shaft 47 extending through the side beam 5 and journaled in suitable bearings. Fixed to the inner end of the shaft 47 is a gear 48 meshing with a gear 49 journaled in the frame 4, and with a gear 50 on the exit roll 41. The gear 49 meshes with a gear 51 on the exit roll 42. It will be noted, by reference to Figure 6, that the gears 50 and 51 are in different parallel vertical planes, and that the gears .48 and 49 are considerably wider than the gears It will be evident that this arrangement permits the rolls 41 and 42 to move towards each other, as their diameters become less, until the reduced end 52 of the roll 42 comes in contact with the gear 50 on the roll 41. The relative positions of the gears when the rolls 41, and 42 are new are illustrated in Figure 7, and-their relative positions after the rolls have become reduced in diameter are illustrated in Figure .8. For urging the rolls 41 and 42 relativelg towards each other, the usual weighte levers 53 are provided, these levers being pivoted intermediate; their ends to the frame at 54 and bearing at one end against the bearing portions 55 of roll 42. The advantages of the gearing arrangement described over the usual arrangement in which the exit rolls are geared directly together, will be apparent, as the described arrangement obviates the necessity for changing the gears on the rolls during their useful life.

The means for driving the various sets of rolls is illustrated in Figures 9, 10 and 11, and comprises a motor 56 which drives a worm shaft 57 through suitable changespeed gearings 58 and 59 arranged in the housing 60. The worm shaft 57 carries worms 61, 62 and 63, which engage worm gears 64, 65 and 66 on shafts 67, 68 and 69.

The shaft67 has secured to an end thereof a. sleeve 70 having a bore 71 of non-circular cross section, and secured therein by means of a set screw 72 is the end of a bar 73, also of non-circular cross section. J ournaled on the end of the shaft of the intake roll 39 is aclutch member 74 having a bore of non-circular cross section receiving the opposite end of the bar 73. Slidably mounted upon the shaft 75 for rotation therewith and for cooperation with the clutch member 74 is a clutch member 76. Extending throughthe hollow tie rod 7 is a rod 77 operatively connected at one end to the clutch member 76 and at its other end to an operating lever 78. The shaft 75 is arranged to drive the usual wringer rolls 79 and 80 through the sprocket Wheels 81 and 82 on shaft 75 and shaft'83 of roll 80 and the connecting sprocket chain 84.

The described driving connection between the shafts 67 and 75 provides means where by a Workman, standing at the opposite side of the supporting frame 4 from the driving means, can instantly render inopera-' tive the driving connection between the shaft 75 and bar 73, and thereby stop rotation of the intake and wringer rolls. It is of great advantage to be able to do this when a sheet becomes stuck in passing through the machine, as has already been pointed out.

The shaft 68 is operatively connected to the shaft 24 by means of a sleeve 85 and bar 86, these parts corresponding to the parts 70 and 73. One end of the bar 86 is secured in the bore 71 of sleeve .85 by a set screw 72, and the other end engages in a bore of non-circular cross section in the end of the shaft 24, but is not secured therein.

The shaft 69 drives a shaft 87 through speed-change gearing arranged in the housing 88. This speed-change gearing comprises a plurality of gears 89 of different sizes mounted on the shaft 87 and a gear 90 on shaft 69 meshing with a gear 91 journaled in a supporting member 92. The supporting member 92 is bifurcated to straddle the gears 90 and 91 and is journaled at one end upon the shaft 69. At its' other end the supporting member 92 carries a spring-actuated pin 93 adapted to engage any one of a plurality of holes 94 in the housing 88 to hold the gear 91 in mesh with the desired one of the gears 89.

The shaft 87 has secured thereto a sleeve 95 and a bar 96, similar to the bars 73 and 86, operatively connects the sleeve 95 with shaft 47 said bar 96 being secured at one end in the bore 71 of sleeve 95 by a set screw 72, and having its other end projecting into a bore of non-circular cross section in the end of shaft 47, but not secured there in. The shaft 97 of roll 43 is driven through sprockets 98 and 99 on shafts 47 and 97 and sprocket chain 100.

56 and shafts 67, 68 and 87, is mounted upon a stationary base spaced from the supporting frame 4. The bars 7 3, 86 and'96 consti-' tute a readily detachable driving connection between the driving means and the rolls. It will be seen that the bar 7 3 can be disconnected from the shaft 7 5 merely by loosening the set screw 72 and moving the bar 73 longitudinally away from the supporting frame. In like manner, the bar 86 can be disconnected from the shaft 24 and the bar 96 from the shaft 47. By reason of the fact that the bars 73 86 and 96 are secured only at their ends remote from the frame 4, these bars can be manipulated at their cooler portions for disonnecting the driving means from the rolls,'and this is obviously an advantageous feature. The particular advantage, however, of this construction and arrangement of the driving means and driving connections between the driving means and rolls, arises from the fact that it obviates the necessity for backing the driving means away from the supporting frame in order to disconnect the driving means from the rolls, it only being necessary to move the 'bars 73, 86 and 96 for this purpose.

I claim:

I 1. In a coating machine, a roll, stationary driving means spaced-from said roll, and an elongated member operatively connected at one end to said driving means and at its other end to said roll, said member being adapted to be moved longitudinally to dis? connect it from said roll, substantially as described.

2. In a coating machine, a supporting frame, a plurality of rolls journaled therein, stationary drivingmeans spaced from said frame, and an elongated member operatively connecting each of said rolls with said drivving means, said members being movable side of said frame for rendering said drivlongitudinally to disconnect them from said rolls, substantially as described.

l 3. In a coating machine, a plurality of sets of rolls,.drivin means, means operatively connecting said driving means with each set of rolls, and a clutch in the driving connection between said driving meansand one set of rolls whereby to render said drivingconnection inoperative at will, substantially as described.

4. In a coating machine, a supporting frame, a roll journaled in said frame, driving means onone side of said frame, a driving connection between said roll and driving means, and means operable from the other ing connection inoperative, substantially as described.

5. In a coating machine, a" supporting frame, a roll journaled in said frame, stationary driving means spaced from said frame, an elongated member operatively con- 1,4aaaco necting said driving means with said roll and adapted to be moved longitudinally away from said frame for disconnecting it from said roll, and releasable means engaging the end of said member connectedto said driving means for normally preventing longitudinal movement thereof, substantially as described.

6. In a coating machine, a roll, stationary driving'means spaced from said roll and ineluding a shaft, a sleeve mounted on said shaft, a shaft for rotating said roll, a sleeve- 7. In a coating machine, a roll, stationary driving means spaced from said roll, a shaft fer operating said roll, an elongated member operatively connected at one end to said shaft and at its other end to. said driving means, said member bein adapted to be moved longitudinally to disconnect it from said shaft, a clutch in the connection between said member and shaft, and means for operating said clutch, substantially as described.

8. In a coating machine, a supporting frame, a plurality of rolls journaled therein, stationary driving means spaced from said frame, and driving connections between said driving means and rolls bodily movable in the direction of said driving means for disconnecting said driving means from said rolls, substantially as described.

v9. In a coating machine, supporting means, a roll journaled therein, stationary driving means spaced from one side of said supporting means, a shaft for rotating said roll, an elongated member operatively connected at one end to said shaft and at its other end to said driving means, said member being adapted to be movedlongitudinally to disconnect it from said shaft, a clutch in the connection between said member and shaft, and means operable from the side of said supporting means opposite from said driving means for operating said clutch, substantially as described.

10. In a coating machine, a pair of exit rolls, a gear fixed to one end of one of said rolls, a gear fixed to the corresponding end of the other roll but arranged out of the plane of said first gear, a shaft parallel to roll, and means for driving said shaft, substantially as described.

11. In a coating machine, a pair of exit rolls, a gear fixed'to an end of one of said rolls, a gear fixed to the corresponding end of the other of said rolls but arranged out of the plane of the first gear, and means for driving said gears, substantially as -de-' scribed.

12. In a coating machine, a pair of exit rolls, one of said rolls having a reduced end, a gear fixed on said reduced end, the other of said rolls having a reduced end extending beyond the reduced end of the first roll and having a gear fixed thereon but arranged out of the plane of the first ear, and means for driving said gears, su stantially as describe 13. In a coating machine, supporting means, a roll journaled therein, a shaft, means for driving said shaft, a driving connection between 'said shaft and said roll, a bearing for said shaft arranged to permit said shaft to be swung about an axis, and releasable means for normally holding said shaft in position. to maintain said driving connection between said shaft and roll, whereby said shaft may be swung about said axis to disconnect said driving connection when released from said holding means, substantially as described.

14. In a coating machine, supporting means, a roll ,journaled therein, a shaft having a reduced end portion, means'for driving said shaft, a gear fixed to an end ofsaid roll, a gear slidably mounted on said reduced end of said shaft, a bearing for said shaft arranged to ermit said shaft to be swung about an axis, and releasable means the gear on said roll and'to permit said gear on said shaft to slide off 'of said reduced end, substantially as described.

15. 'In a coating machine, a supporting.

frame," a roll journaled therein and having a gear fixed to one end thereof, a shaft having a gear on one end thereof adapted to operatively engage the gear on said roll, a second shaftjournaled in said frame and having its axisat right angles to saidfirst shaft, a

ear on one end of said second shaftmeshing with 'a gear on the other end of said first shaft, a bearing for said first shaft arranged to permit the same to be swung about said second shaft as an axis, and releasable means for normally holding said first shaft in position to maintain the gear connection between the same and said roll, whereby said' first shaft may be swung about said axis 'to release said gear connection between the same and said roll when released from said holding means, substantially as described.

In testimony whereof I have hereunto set my hand.

' HARLEY D. PENNINGTON.

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