US1668355A - Pickling apparatus - Google Patents

Description

May 1, 1928.

w. J. COOK PICKLING APPARATUS Filed Sept. 22. 1927 2 Sheets-Sheet 1 INVENTOR i? TTOR Y l, I w. J. c oK PICKLING KPPARATQS Filease t. 2'2. 192'? 2' Sheets-Sheet 2 INVENTOR QTTORNEY PatentedMay 1, 192 8. 1

UNITED STATES PATENT OFFICE.

WILLIAM J. COOK, OI WHEELING, WEST VIRGINIA.

PIQKLING APPARATUS.

Application fled September-'28, 1927. Serial No. 221,240.

' rack-support removably mounted on said rockers and means associated with said support whereby the extent of rocking movements of the latter may be regulated.

A further object of the invention is to provide, in apparatus of the character mentioned, means whereby the rocking movements of the rack-support may be controlled for regulating the extent of lateral travel of the rack within the pickling bath.

With these and other objects in view, the invention resides in the features of construction, arrangement of parts and combinations of elements which will hereinafter be fully described, reference being had to the accompanyingdrawings, inwh1cl 1-- Figure 1 is atop plan new of a pickling mechanism embodyin my invention;

Figure 2 is a sectional elevation of the same taken on line 2'2., Fig. 1;

Fi re 3 is an enlarged side elevation of a mo support or spreader;

Figure 4: is an enlarged frontelevation of a fra entary portion of a rocker with the sprea er mounted thereon; and- Figure 5 is an enlarged end elevation of the same.

Referring'to said drawings, 1 designates an oscillatory shaft journaled in suitable bearings 2 and occupying a position above the level of, between and in parallel relation to two companion pickling tanks 3 which constitute containers for the pickling flllld, or baths. Rigidly carried by each end of the shaft 1 so as to oscillate with the latter is a rocker 4 which, in the embodiment herein shown, is of skeleton-frame form and comprises opposite horizontally ahned arms 4 and a centrally located depending arm a. Said arm 4 has 'pivotally connected thereto an end of a pitman 5 through which oscillating movements mav be imparted to the rocker. The alined arms 4* are preferably so located that, disposed in the normal rocker-balanced osition thereof, their upper edges throng out the major portions of their is s, lie substantially in the plane of the top edges of the tanks, as shown. The opposits ends of said alined arms are upturned and each thereof is provided with an upwardly facing recess .6 in which is removably fitted a bearing block 7 havingtherein a seat 8 for the reception of a trunnion 9 formed upon an end of the beam portion 10 of a spider-like spreader 11.

The spreaders l1 constitute'supports from which may be suspended the usual racks 12 bearing the sheets to be treated in the pickling baths of the tanks 3. Each of said spreaders comprises the said beam 10 which, as herein shown, is of heavy cast metal construction and which has formed thereon at each of its opposite sides a pair of horizontal outwardly directed arms 13 adapted to receive thereon hooks or eyes 14 formed upon the upper ends of suspension rods 15 which have their lower ends attached to opposite sides of the racks 12.

The spreader 11 is designed to be transferred by means of a traveling crane to and from its operative position whereinits trunnions 9 seat upon the bearing blocks 7 of the rockers 4, an eye 16, or its equivalent, for receiving the carrying hook of the crane being provided in or on the beam 10 midway between the ends of the latter.

Carried rigidly by each end of the beam 10 in spaced overhanging relation to each trunnion 9 is a cross-arm portion 17 of a horizontally disposed bracket 17. Mounted vertically 111 the opposite end portions of said cross arm portion 17 of said bracket are pins or bolts 18 which are longitudinally movablethrough said bracket. Each of said pins has a fixed head 18 on its lower end and has a nut 19 threaded upon its upper end. A compression spring 20 is carried by each of said pins between its head 18 and the under side of said bracket, as shown.

Also carried by each end portion of the cross arm 17" of each of the brackets 17 is a vertically adjustable stop 21 which consists of a threaded bolt, said stops being designed for a purpose which will hereinafter be explained.-

In practice, the loose bundles or batches of sheets to be pickled are deposited edgewise upon the racks 12, following which a spreader, carried by a traveling crane is lowered over one of the loaded racks. The racksuspension rods 15 are then attached to the arms 13 of the spreader, following which the spreader and the suspended rack are transported to a position over one of the pickling tanks and are then lowered to dispose the trunnions 9 on the seats 8 of the bearing blocks 7 borne by the adjacent ends of the rockers 4:.

Osci'llatory movements of the rockers produced through the medium of the pitman 5 effect alternate lowering and elevating movements of the two suspended racks whereby the sheets are alternately plunged into and partially elevated from the acid baths of the tanks.

Obviously, in each reciprocating movement, each of the sheet-bearing racks is caused to travel in the arc of a circle and, consequently, in addition to the vertical travel thereof, the sheets have a slight lateral travel within the bath. The resistance offered by the fluid of the bath to such lateral travel resolves itself into a force which tends to separate the sheets of the pack, allowing prompt access of the fluid to the surfaces of the va'- rious sheets. It is to be noted, however, that this resistance tends to retard the lateral travel of the sheets through the bath,

resulting in the maintenance of the rack and the supporting spreader in substantially horizontal position at the lowermost limit of travel, particularl when the load borne by rack is substantia ly balanced and also when the load borne by the inner side of the rack exceeds that borne by the outerside. This condition is illustrated as existing in Fig. 4 of the drawings wherein, with the end of the rocker 4 occupying its lowermost limit and presenting the top surface of its upwardly turned arm in downwardly and outwardly inclined position, the spreader is shown as occupying its substantially horizontal position. As a means for overcoming the effect of the aforesaid resistance and for imparting to the rack a continued lateral movement, or side-swish, of a pronounced character, at or adjacent to such lowermost limit of travel, the inner of the compression sprin s 20 and its supporting pin 18 are provided. As the lowermost limit of travel is approached, said in 18 seats upon the top face of the under ying rocker arm and is thrust upward, compressing said spring and imparting through the latter a yielding force which acts to rock said spreader to a position in which its arms are inclined downwardly and outwardly, thereby imparting to the suspended rack a lateral swinging movement or travel.

Substantially the same result is effected at the end of the upward movement of the rocker by the provision of the outer of the compression springs 20, such springs being compressed, as shown in broken lines in Fig. 4, as the limit of upward movement is approached, so that the spreader is rocked inward slightly for imparting to the rack 21. final outward kick in which the sheets are moved laterally in the bath.

The stops 21 are designed to be adjusted to limit the lateral travel of the suspended rack to the extent that the rack-carried sheets will not be allowed to upset. This limiting means is particularly advantageous in cases where an unbalanced load is carried by the rack. For example, when a. great preponderance of load is borne by the outer side of the suspended rack, there exists a tendency for therack to be carried inwardl too great a distance at the lowermost limit of travel; or, following the application of force exerted by the inner'of the springs, and such is counteracted by the provision of the outer stop 21 which has previously been adjusted to seat upon the underlying face of the rocker at the desired limit of inward travel of the rack.

What is claimed is- 1. In a picklin apparatus, the combination with a pair 0 pic ling tanks and members arranged for oscillatory movements adjacent to the opposite ends of said tanks and having bearings in their ends, of a spreader for mounting over eachtank, said spreader having trunnions for seating on said bearings, members carried in fixedoverhanging relation to each trunnion, and means associated with each of the last mentioned members whereby the rocking movement of said spreader on its bearings may be controlled.

2. In a pickling ap aratus, the combination with a pair of pie ing tanks and members arranged for oscillatory movements adacent to the opposite ends of said tanks and having bearings in their ends, of a spreader for mounting over each'tank, said spreader having trunnions for seating on said bearings, bracket members carried by each spreader in overhanging relation to its trun- IllOIlS, and means associated with said bracket members whereby the extent of rotary movement of the spreader on its bearings may be regulated.

3. In a pickling ap aratus, the combination with a pair of pickling tanks and members arranged for oscillatory movements ad- 'acent to the opposite ends of said tanks and aving hearings in their ends, of a spreader ada teclto be removably mounted over each tan said spreader having trunnions for seating upon said bearings, and means interposed between said spreaders and said mem- 1,ees,su

tank, said spreader having trunnions for seating upon said bearings, and resilient means interposed between said Spreaders and said members for controlling the rotary movements of the former.

5. In a pickling apparatus, the combination with a pair of pickling tanks and members arranged for oscillatory movements adjacent to-the opposite ends of said tanks and having bearings in their ends, of a spreader adapted to be removably mounted over each tank, .said spreader having trunnions for seating upon said bearings, and resilient means interposed between said Spreaders and said members whereby a final rocking movement is imparted to the spider adjacent to the limits of the oscillatory movements of the members.

6. In a pickling apparatus, the combination with a pair of pickling tanks and members arranged for oscillatory movements adja cent to the opposite ends of said tanks and having'bearings in their ends, of a spreader adapted to be removably mounted over each tank, said spreader having trunnions for seating upon said bearings, brackets carried by said spreaders in fixed overhanging relation to the bearing-carrylng portions of said members, and compresslon springs interposed between each of said, portions of themembers and the overhanging bracket.

7. In a pickling apparatus, the combina tion with a pair of pickling tanks and members arranged for oscillatorymovements ad- 'aoent to the opposite ends of said tanks and aving hearings in their ends, of a spreader adapted to be removably mounted over each tank, said spreader having trunnions for seating upon said bearings, brackets carried by said spreaders in fixed overhanging relation to the bearing-carrying portions of said members, compression sprlngs carried bybers arranged for oscillatory movements ad- U jacent to the opposite ends of said tanks and having bearings in their ends, of a spreader adapted to be removablymounted over each tank, said spreader having trunnions for seating upon said bearings, bracketsof cross arm form carried by each spreader in overhanging relation to the trunnions and to the adjacent faces of its members, headed bolts carried vertically by and longitudinally movable through the opposite ends of said bracket, compression springs interposed between the bracket and the lower headed ends of said bolts, said headed ends of the bolts .being ada ted alternately to seat upon the adjacent aces of the. members adjacent to the limits of travel of the latter.

9. In a pickling apparatus, the combination with oscillatory supports, of rack-supporting sp'readers adapted to be removably mounted upon said supports, each spreader having trunnions on its ends and having cross-arms disposed in overhanging relat1on to said trunnions, an adjustable stop carried by each end portion of each cross-arm, and a compression s rin interposed between each end portion 0 sai 'cross arm and an under- '7 lying portion of the adg'acent support.

In testimony whereo I afiix m signature.

WILLIAM 000K.

Images