DISKS. 



1515 



plaLk, and a iiin-socket iiiovably altaclicd to 

 the gang-plank, and iiroviileil with a spherical 

 knuckle seated m said sphi-rical socket, sub- 

 stantially as set forth. 



3. The combination, with the nnvin frame 

 and the disk-gang, of a pin scoured to the main 

 frame, a spherical socket secured to the dis);- 

 gaug, and a pi n-soeket adapted to receive the 

 pin of the main frame, and provided with a 

 spherical knuckle seated in said spherical 

 socket, substantially as set forth. 



4. The combination, with thcgang-plank.ol 

 the spherical socket 1), pin-socket IV, having 

 a spherical knuckle, il, hooks r, and link 10, 



substantially as set fortli. 



5. The combination, with the main frame, 

 of disk-gangs, ball-and-socket joints, whereby 

 the disk-gangs areattached to thcniaiu frame, 

 and hooks /,-, whereby the inner ends of the 

 disk -planks can be rigidly secured to the main 

 frame, substantially ius set forth- 



0. Thecouibinatiou,witli Ihemaiuframeand 

 disk-gangs, of an arm, F, having a gear-seg 

 mentiff, conneeting-rodsy , ana a worm-wheel, 

 O, substantially -.is set forth. 



7. The combination, with the main frame and 

 disk-gangs, of an arm, F, having a gcar-scg- 

 nient,/7,connocting-rods/',worm-wheclG, pro- 



vided with arm 1, and catch i, substantially a.'- 

 set forth. 



8. The combination, with the main frame, of 

 disk-gangs attached to the main frame by 

 swivcling connections, whereby each gang is 

 adapted to adjust itself independently to the 

 inequalities of the ground, and a drag or lev- 

 eler arranged in rear of the disk-gangs and at- 

 tached looselytothe mainframe, substantially 

 a-s set forth. 



9. The combination, with the disk-gang and 

 disk-plank, of bearings B', oil-cni>s K, having 

 bai-s .s', cover S, rod s, and spring T, substan- 

 ti.ally as set forth. 



