US2326794A - Transfer valve - Google Patents

Description

17, 1943- R. E. J. NORDQUIST 2,326,794

TRANSFER VALVE Filed Dec. 10, 1941 l 7f INVENTOR.

Mz% MM A T To e/v s Patented Aug. 121943 V The i present .mvmtron closing containers or can and h s particulari erencetoa novelrn t I a transfer valve offa, acuu g i i a In .vacuumclosing roeir -s and many can making machines; p p p I I bodies with one end attachediandwithgacancn'd orcover, are conveyed throng-n the' machinej'by turrets andtra-nsfer"valves having pockets in which the can parts are located While moving from one place to anotherl The present invention contemplates more posie,

tive holding of the can parts in suchiturrets and transfer valves by means of a magnetic force so that the can parts will be prevented from shifting in their pockets While being advanced.

7 An object, therefore. or" the invention is rovision in a turret or transfer valve of a can closing machine of holding devices which operate to retain a can part in a pocket of the turretor valve by magnetic attraction sothat the can part will be maintained in a definite predetermined position within the pocketgduringiits advance ment through the machine.

Another object is the provision of such holding devices which may beadjustedto a predeter-" mined elevationin the turret or valve pockets to v maintain thecan part in a' clesired position.

Numerous other objects and advantages or" the invention will be apparent as better under-' stood from the following description, which, taken in connection with: the accompanying drawing, discloses a preferred embodiment thereof.

Referring to the drawing:

Figure 1 is a plan view partly in horizontal section taken through a portion of "a transfer valve embodying the instant invention, with parts broken away; and v 1 Fig. 2 is a fragmentary front elevation of the valve, with partsv broken back and shown in section.

, As a preferred embodiment of the invention the drawing illustrates principal parts of a transfer or turret valve for a vacuum closing machine of the character disclosed in United States Patent 2,039,338; issued May-5, 1936," to Ronald E. J.

. ber i i having al pl urality ofipockets" "around its periphery construction; 7 V v V a I 1 Each valve pocket 12 contains a spacerblock f "The transfer valveincludes-a eyl-i rrdjical me mounted on: a shait which is -'1fota t edin-'- n'v suitable manner in ime with the ather mov ng parts of the machine. The" valve memberidi -'f r s t rrwed w frame {-5 vv fch ma boa-part i l for m In the instant ma chi-ne tl'ie-valve H andthe valve seat is seal the entrance. to a. vacuum chamber iii in which the cover A is. seamed onto .7 a can in the usual manner. ,The valve seat is formed with an inletior entrance opening, I 1. and

F a similar outlet or discharge opening is disposed] opposite the inlet vopening to'permit of inserting and discharging the can covers A into and from the valve pockets,

2],- a plur'ality of shims '22, and a cover guide blcck'ZS which are held together'against the'ceiling ofithe pocket by bolts z l secured to the valve Y member: H The bottom of thecover guide block i 23 is formed with a depending ledge-2615c re-"w ceive and to guide into a centralized position a coverA inserted in thepocket. The bottom of the cover guide block isva-ls'o formed With a radial-. I

ly disposed channel Elfin which'there is located an inverted U-shaped permanent'bar magnet 28. v This magnet isVse'cure-d in place by a .pair of cap" screws 29 and is suitably insulated from the guide bio-ch23.

Thuswhen a cover is inserted into the guide block 23 Within thevalve-pocket, the cover is attracted to the magnet and is held against di'splacement from the pocket duringrbtation of th valve. from those in place in the pocket, the level of;

By augmenting or-subtracting shims-'22 confined cover A may be altered or adjusted to correspond with other cooperating working parts Nordquist et al. The valve'shown in the drawing is utilized for transferring can covers or ends A into and out of a vacuum chamber of the'ma .chine although the invention is equally well adapted to valves, turrets; or starwheels in other than vacuum macl'n'nes for advancing cans, can

bodies, and cans with superimposed covers,' or" cans in which the covers are held in spaced relation thereto.

in themachinei If such .an adjustment-cannot v be accomplished: by adjusting the shims, the

spacer block 21 may be removed and a different block ofjthe irequired thickness inserted in its place. i, v v m Provision is also made for ejecting the-cover A i Y from its position within a valve'poc ket l2 at the;

proper or desired time. For' th'is purpose each pocket l2'contains an ejecting finger 3| which" is disposed adjacent theinner end of the pocket. The finger is mounted on afrock shaft 32 which is carried in bearings formedv in the valve member l l.- These rock shafts are oscillated by cam actionas disclosed'in the above mentionedNord;

. v i. :Pwi This-waive -member =is j This led usual transfer valve net 28 in the pocket.

quist patent. This is a usual valve ejecting finger construction. When a valve pocketlZ confininga'cover reaches the discharge o-utletinthe valve seat ",the cam actuated ejecting finger 3! within the pocket rocks outwardly against the cover and pushes it outof the valv pocket against the resistanceor'magnetic pull of the holding mag- An opening'35 lS'fOrmed in the bottom of the guide block 23 to permit pocket for holding areceived can part against radial displacement relative thereto, andejector means also disposed in a said pocket and operable v to eject the can part from said pocket against the holding pull of said magnetic element.

2. In a can closing machine, the combination 7 of a rotatable transfer member having pockets this movement of the ejecting finger. The cover thus removed from its pocket is discharged, through the outlet opening in thevalves'eat 14, into the vacuum chamber for a subsequent'oper-T ation.

It is thought that the invention and many of its attendant advantages willbe understood from the foregoing description, and it will be apparent L that various changes may be made in theform,

construction and arrangement of the parts without departingfrom the spirit and scope of the invention orsacrificing allot its material advantages, the form hereinbefore described 'being merely a preferred embodiment thereof. v I i i f ;1. In a can closing-machine, the combination of arotatable transfer member havi g peripheral 1 pockets for receiving a can part, a permanently energized magnetic element disposed in a said transfer member.

for receiving a can part, a guide block within said pockets for confining a received can part in a predetermined position in its pocket, and a permanently energized magnet secured to said guide block for retaining th confined can part against radial displacement during rotation of said 3. In a can closing machine, the combination --of a" rotatable transfer member having pockets for receiving a can part, a guide block within said pockets for confining a received can part in a predetermined position in its pocket, removable and. replaceabl spacer elements adjacent .said

" guide blocks in said pocket for locating said guideblocks andthe can parts confined therein I at a predetermined elevation in said pockets, and

a permanently energized magnet secured to said guide block for retaining the confined can part against radial displacement during rotation of said'transfer member. Y i V g RONALD E, J NORDQUIS'I;'

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