US1040952A

US1040952A - Can-head-seaming mechanism.

Info

Publication number: US1040952A
Application number: US59560910A
Authority: US
Inventors: Axel Johnson
Original assignee: American Can Co
Current assignee: Primerica Inc
Priority date: 1910-12-05
Filing date: 1910-12-05
Publication date: 1912-10-08
Anticipated expiration: 1929-10-08

Description

A. JOHNSON.

CAN HEAD SEAMING MECHANISM.

APPLICATION FILED DEC. 5,1910. 1,040,952. Patented Oct. 8, 1912.

2 SHEBTSSHEIJT l.

5. v if A. JOHNSGN. CAN HEAD SEAMING MECHANISM. APPLICATION rum) D1105, 1910.

I Patented Oct. 8. 1912.

2 SHEETSSHEET 2.

UNITED STATES PATENT AXEL JOHNSON, 0F OAKLAND, CALIFORNIA,

FFICE.

ASSIGNOR TO AMERICAN CAN COMPANY,

A CORPORATION OF NEW JERSEY.

CAN -HEAD-SEAMING MECHANISM.

Specification of Letters Patent.

Application filed December 5, 1910. Serial No. 595,609.

Patented Oct. 8,1912.

Seaming Mechanism, of which the following is a specification.

The inventlon relates more partlcularly to an improved machine for seaming heads or covers to open ended cans containing paint or other liquid preparations, wherein the filled can is required to be held against rotation during the operation of seaming or applying the head or cover to the openend thereof.

The object of the invention is to provide a simple, effective and durable machine for the described purpose, by means of which the filled can to be headed may be properly adjusted and the head or cover positioned end thereof by hand relative to the open prior to the seaming and properly clamped mechanism being thrown into action for antomatically seaming the head to the end thereof, the filled can during the seaming operation being held clamped against r0tation.

The machine comprises in cooperative combination a pair of vertically movable can holder chucks, means for raising one of said chucks to properly position the filled can and clamp a can head onto'the open end thereof, a pair of seaming rollers, and means for automatically placing into. opera tion the said rollers for seaming a can head or cover onto the open end ofthe clamped filled can.

To comprehend the invention reference should be had to the accompanying sheets of drawings, wherein Figure 1 is a view in elevation partly sectioned of the improved machine, illustrating the upper can chuck in raised locked position" and the companion can chuck in adjusted position, and the actuating connection for the spinning head carrying the seaming rollers disconnected from the drive mechanism for impartingrotation thereto. Fig. 2 is a detail elevation of the slide lock clutch and the slide lever for act ating the same, the lock clutch and the drive shaft on-which it is mounted being in section.

- Fig.3 is an enlarged detail broken elevation of the structure disclosed by Fig. 1 of the drawings, the upper portionof the frame and certain of the operative parts being in section, said view illustrating the upper can chuck as released from its raised locked posit-ion.

In the drawings, the numeral 1 is used to' designate any suitable form of a support ing frame structure, which in the present case, pal-takes of the nature of a hollow standard carrying at its upper end an inclosing housing 2 for the drive' mechanism, from said housing being extended a bracket 3 which supports a vertically extended shell 4 carrying a housing 5. Through the housing 2 is extended ahorizontally disposed drive shaft 6 driven by a belt pulley 7, and on said shaft is loosely mounted a worm 8 carrying a clutch head 9, which is engaged by the slide clutch l0 feathered to the drive shaft 6. The drive shaft 6 is extended within the housin 5 and on such end is secured a gear 11, which, as hereinafter explained, transmits the mo tion of the driveshaft 6 to the spinning head carrying the seaming rollers. The worm 8 meshes with the worm gear 12 mounted within the housing 2. In one face of the said 13, Within which works an anti-friction roller 14- secured to the inner end of a fulcrumed lever 15 extended within the said housing. From the opposite face of the gear 12 projects a pin or short stud 16 which acts'against an arm 17 pivoted to lever 18 slidably mounted on a cross rod 19' and normally held inwardly pressed by the action of a coiled spring :20. The upper end of the slide lever 18 is forked to straddle the grooved hub of the slide clutch 10, for forcing or placing the same into locked engagement with-the clutch he 1d 9 of the worm 8 in order to transmit thereto for driving the worm gear 12 the motiorrof the drive shaft 6, when the pivoted arm 17 is moved out of engagement with the locking stud 16.

From the arm 17 depends a connecting rod 21, which is normally held downwardly pressed by the action of the coiled spring 22 surrounding the same and which bears against a'collar 23 thereon and the under face of the head of the frame standard 1. To the lower end of the rod 21 is pivoted the end of the angle extension 24: of the fulgear is formed a cam groove ing roller levers 80 and 30 crumed hand operated lever 25, which is pivoted within the frame 1 and extended-oeyond the same.

Through the vertical shell 41 is extended a'rotary sleeve 26, which at its upper end carries a gear 26 in mesh with the driving gear 11 of the drive shaft (3, and to the lower end of said sleeve is secured the seaming head 27, which head is furnished with a set of seaming rollers, consisting of a forming roller 28 and a seam closing roller 28. .Qhe said rollers are ournaled directly 1 1 'J to tea slides 29-woru1ng within the seammg head 27, and the seaming roller slides are moved in and out to operate the seaming rollers by means or" the seamfijilcrumed by pins 30 on the seaming roller head 27 furni hed with anti-friction rollers 31 for engagement with the came 32 or on the cam collar 33 which surrounds and is slidably mounted on the lower end portion of the sleeve 26. The said cam collar is reciprocated required to successively operate the

seaming rollers

28 and 28 by means of the fulcrumed lever 15, having a forked or yoked end which engages the circumferentially grooved portion 83 of the cam collar 33.

Through the seaming head 27 and sleeve 26 is extended the vertically movable plunger rod 34%, normally held downwardly pressed by the spring 34. To the lower end of the said plunger rod is secured the can chuck 35, which cooperates with the opposing or lower can chuck 35 for the clamping of a filled can with a loosely applied head thereloetween.

The stem 36 of the chuck 35 extends through a guide 86 of a bracket 87, and the lower end thereof is connected by the rod 38 to a foot-treadle 39, the normal position of said rod and treadle being indicated by dotted lines in Fig. 1 of the drawings.

The plunger rod 34; is held locked in its raisedposition by means of the look-rod. 4:0, which works through the housing 5 and moves into engagement with the seat 10 in the upper end portion of the rod 3%, the said lock rod 10 being pivoted to the upper end of a short fulcrumed lever 41, pivoted at its lower end to the upper end of the slide lever 18.

The filled can 42 is placed on the chuck 35 and the cover 'or head 12 loosely aplied thereto, the operator depressing the foot treadle 39 to slowly raise thechuck 35 and gradually forcing the can with its loosely applied head against the chuck 35, ample time being thus given the operator in which to properly position the can head or cover. As'the pressure on the foot treadle is continued the plunger rod 3 1 is forced upwardly its full distance and so held by the operator, when the handle or lever 25 israised to lower the connecting rod 21 and depress the arm 17 from within the sphere or the stud 16, which movement of the arm llshii'ts the position of the slide lever 18 p to force the lock rod 10 into engagement with the plunger 3% and to throw the clutch 10 into ei'xgagement with the clutch head 9. It will he noticed that the clutch head 10 is not shifted for engagement with the clutch head 9 until the lock-rod 10 has moved into engagement with the seat 10 of the plunger 341-. The moment the clutch 10 moves into locked engagement with the clutch head 9, the rotary motion of the drive shaft 6 is imparted to the worm 8 and by the same transmitted to the gear 12, During the first portion of: its revolution, the roller 14 of the lever 15 moves into such portion of the cam groove 18 as to throw upwardly the outer end of the lever 15 lifting the cam collar 83, which carrying therewith the cam 32 actuates the roll 31 to throw the lever 30 for forcing inwardly the hanging roller 28 of the spinning or seaming head 27, after which the roller 14-- is carried intosuch portion of the cam groove 13 as to force downwardly the said cam collar 33, causing the roll 31 to ride on the cam surface 32 and through its connection with roller 28 force the same inwardly to scam the flanged can head or cover onto the flanged end of the clamped can It will be understood that the lever 25 is released the moment the arm 17 has been thrown, when the pressure of the spring 22 exerts itseli and draws downwardly the rod 21 ind places the arm 17 within the path of the stud 16, which as the gear 12 complates its revolution hears againstthe end of arm iorces it outwardly, the movement of which forces over the slide lever 18 to withdraw the clutch 10 from on gagement with the clutch head 9 andat the same time shifting the fulcrumecl lever 11 to withdraw the lock rod 10 vfrom engagement with the plunger rod 34:. By this time the lever 15 will have been actuated to raise the cam collar 33 for placing the seaming roller 28 out of engagement with the flange of the can head or cover, when foot pressure being released .from the treadle 39 the pressure of the retained spring 34 forces downwardly the can chucks 35 and 35, taking the headed can from within. the sphere of the seaming rollers.

It will be understood that the 6 is a continuously rota-ting hue and that the seaming head 27, through its direct con-. nection therewithfis likewise a continuously rotating one.

thus is claim as new and desired to protected Letters Patent is- In a machine for the described purpose, the combination with'a seaming head prodrive shaft described the invention what i Yided with axially movable l'orming andt seaming rollers, of a spring actuated can, chuck normally held below the rollers ol the seaming head, a second can chuck spaced a distance below the upper can chuck tor supporting a can to ha re a head seamed thereto, means for raising the lower check to clamp a can between the chucks, and raise the upper spring held chuck, drive means for imparting continuous rotation to the scaming head, a Slidable cam collar acting against the rollers of the sean'ung head, actuating mechanism for raising and lowering saitl collar for successively placing the forming roller and the seaming roller into and out i l l l l l l i head tohe seamed onto the clamped can,

and a lock device for holding the upper canehuck in raised ponition during the seaming operation and the actuating mechanism for the cam collar against movement, until the said can chuck is properly positioned.

1n testimony whereof I have signed my name to this sptmitication in the presence of two subscribing Witnesses.

AXEL JOHNSON.

Witnesses N. A. Acnnn, D. B. RICHARDS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.