US930025A - Vacuum sealing apparatus. - Google Patents

Description

Patented Aug. 3, 1909.

VACUUM SEALING APPARATUS.

APPLICATION FILED JAN. 11, 1909.

G. A, BEARDSLEY & D. WARDELL.

G. A. BEARDSLEY & D. WABDELL. VAGUUM SEALING APPARATUS.

APPLICATION FILED JAN.11,1.909.

930,025. Patented Aug. 3, 1909.

2 SHEET$-SEBBT 2.

EAST ORANGE, NEW JERSEY, ND DANKEL W'AHDEL OF NEXV TO HERMETIC CLOSURE COMl'ANY, OF CHICAGO, ILLINOIS, A

VEAQUUH SEALING APIAZMUEU'S.

Soecifieation of .I. atezited Aug.

i-lp glieation filed January 31, 19%. Serial No. 171' of the entire inschine, with the door closed;

our. A ni-imm- F 1g. 2 a side elevation, showing the door I ;l States, residing o en, and showing the hose partly broken .ity of Essex and i sway; 3 a detail, showing the clutch ARIEL W RDELL, 5 mechanism,- Fig. 4. an enlarged side eleve- I es, residing at 1 tion of the friction broke; Fig. an enlarged 6O t oi New York and l detail of the clutch set-doting cum on the 1, have irwented certs-in door; and Fig. 6 a cross sectional detail, p overnents in Vacuum showing the sealing chamber and the door. 1- us, of which the iollowing is The various operating devices are supported or built into an upright frame or tion relates to apparatus of the shown in lFeten't No. 842,320,

" '19, 1967. in vacuum sealing e-roll type the sealing is re :2. vacuum 3' and cover 11 the meuum chamber, and his door and establishing a the chamber. The final opstundard 7 which, as shown, is in the form of a. hollow column of semi-cylindrical shape and open in front, and carries, at its upper end, a sealing chamber 8, which is open at the front and adapted to he closed by means of a door 9. The door is provided, at its lower edge. with tongues 10 which register with brackets 11 r'gidly formed on the front i to see. s perfected consists upper edge of the stzmdardfsnd the door is suie vietu'eeh the cop andthe pivoted by means of a. shaft 12, whieh outder to ii iii fix'the one onto wardly projects beyond the tongues and is encircled by means of coil springs, the inner ends of which entered into the outer tongues on the door, and the outer ends of which are entered into adjustable nuts 33. The arrangement is one which puts the door under a slight spring tension when it is closed and at the some time prevents the door from falling back beyond predetermined position. 1 These fe:.'tures relating to the general er- 8* or e. vs, "dun u in eh we referred to, 6 fOl'Zi'18d by means of a foot sewes to apply the eonipresthe door after the sealing operations of the foot heavy strain on the attendter the o erstiohs have eo11- e, that frequently the "toward the end of a. days i l f i l l l ,mtisfeetorv. Furthermore. rsngemen-t of the ooor and standard are ssure applied and thetime identical With the patent shove referred to, to .11 operation will greatly vary, and further description is deemed not neeesmg to the stre gth and condition of sorry. I

"out, all of which factors render the Within the sealing chamber is a plunger Foot actuated :i 'ipsrstus ohjeetion- 14 having a stem 15, which is entered 31 through stuihng hex lo and has its lower t the present invention is to end entered into n hollow coupling 37. The he (l iiieulties above noted, by 1 coupling connects the stem with s reoiproml operations automatic, eating rod 18, the upper end of which is euthe attendant of all onerous tered into the coupling, and the lower end of ohysi on in operating the machine. which is provided with s bifurcated head 15) in the present invention, the time accorded which mounts a roller 20. The'reeiproeat- 45 for each opersiionu'ill he uniform, the degree 3 ingrod is slidably mounted Within hearings o ressure ag iplisd wi l be uniform, and the 1 21, holted to cross plates which extend 10o riousoperations will take place outmnotiefrom side to side of the standard. The up .iid in proper sequence. g per hearing serves as on abutment for a coil or objects will appear -from a despring 23, which encircles the reciprocating er tioi2 of the invention, which rod and is held in position by moons of e l l I I construction and collar 24. clamped onto the rodv The plunleroinsl" er deserihed gel stein, shove the coupling,

means oi s. coil spri' y 25, the tension of by moons o sdjursb I Wl one he edjuste actuating rod.

ing nuts 26. This arrangement of springs screw wheel 59 entered through a stu'lfing is shown in the patent referred to, and furbox 60. These features are fully illustrated ther description is deemed unnecessary. The roller is held under spring tension against a plunger cam 27 which is fixedly mounted upon a driving shaft 28 extending horizontally and journaled through bearings 29 in the side walls of the standard near the base thereof. The shaft has loosely mounted thereon, at one end, a driving pulley 30 provided with a clutch face 31, which is adapted tocoact with a slidable clutch member 32, splined or otherwise slidably secured to the shaft. The slidable clutch member is rovided with a beveled inner face 33 which is adapted to co-act with a beveled cam roller 34, which works on a vertical axis and at right angles to the axis of the clutch member. The cam. roller is carried by an L bracket 35, the vertical arm 36 of which is slidably mounted within a bracket 37 and is provided, at its upper end, with a socket head 38 which receives an operating rod 39 provided, at its-upper end, with a bifurcated head 40 which journals a roller 41. A spring 42 is interposed between the head of the L rod and the bracket through which it is entered, which spring is adapted to be compressed by a lowering of the clutch The roller 41 is held in. en,- gagement with a cam plate 43, the shape of which is shown inFig. 5, which cam plate is rigidly secured to and movable with one of the tongues 10 which-serve to hinge the door, so that as the door is thrown into vertical position in closing, the cam will act to de press the rod, thereby bringing the cam surfaces into engagement with one another and throwing the clutch member into position to engage the loose pulley. In order to throw the clutch. out of engagement, after a complete revolution of the shaft, the clutch member is provided, on its periphery, with a beveled tooth 44. The beveled outer face of this tooth, when the clutch member is thrown into engagement, will swing into engagement with the projecting end of an adjustable pin 45 carried by a bracket arm 46 outwardly projecting from the side of the standard. I he opposite end of the shaft has from a rod 51, the upper end of which is pivoted to the forward end of the pivoted lever 52, the rear end 53' of which is slotted to connect with a valve rod 54. which is pivoted to a valve arm 55 controlling a valve 56 located in an exhaust or vacuum pipe 57, the inner'end of which communicates; with thcr interior of the vacuum chamber. Withinthe chamber is located a presser head 58, which is loosely hung from an adjusting in the patent previously referred to. The pressure head heated electrically iii-the usual way, by circuit wires 6]., which are connected to any suitable source of electrical power and are led into the chamber through a stuffing box 62 and are terminally con.- nected to the pressure head. The lever 52 acts against the tension of a coil spring 63, the upper end of which is suitably secured to the standard.

in order to prevent turning of the shalt, save when clutched to the driving pulley, a band brake 64 is provided, comprising a disk 65, mounted on the shaft and encircled by means of a split strap 66, the tension of which is adapted to be regulated by .means of a thumb nut 67 on the end or" tie bolt which is encircled by a coil springfii). Que end of the strap is extended and is provided with sleeve 70 which embraces a bracket pin 71 which inwardly extends from the side wall of the standard.v In use, when it 18 desired to seal a can, the

latter is placed in position on the plunger, in the usual manner, with the scaling cap over the top of the jar. lt hen in position, the operator closes the door against the tension ol the hinge springs. The door, being air tight, will be held shut as soon as the vacuum conditions are sufiiciently established. he closing of the door moves the clutch earl-n into position to depress the clutch rod, watch operation throws down the beveled roller into eiigagement with the beveled inner face of the slidable clutch member; and this movemcnt ol' the parts throws such slidable mc1nher into clutch with the constantly revolving loose oulleyand starts the shaft revolving.- The snait, being provided with two cams, one for establishing a vacuum and the other for operating the plunger, will commence its revolution, and the vacuum valve will be immediately operated by a movement of the rod 51, which shifts the lever 52 and draws down the rod 54, thereby turning the valve and establishing vacuum. Immediately therealter the plunger will be lifted by the movement of its cam, thereby forcing the capped and sealed jar into engagement with the presser head, the position of which can be adjusted. The presser head, being heated electrically, will serve to soften or mold such sealing substance may be employed in the form of a ring between the and its cap, so that the sealing will be performed in cacao and under conditions of pressure and heat. The revolution of the shaft will continue until the tooth 44 is brought into engagement with the forward end of the trip pin 45, which serves to disen age the clutch and stop the revolution of the shaft. This stopping will be immediate, by reason of the iristion of the handbrake, and will occur at a strong or skilled attendant, since the latter time when the cams have returned the vacuumvalve and the plunger to their normal positions. The valve is adapted, when in normal position, to establish atmospheric pressure'within the sealingchamber, so that, after the sealing operation has been completely performed, the vacuumwithin the chamber will be relieved by the ad1nission of air, and the door will fly open under 1 said clutch and operable by the movement of spring tension and assume its normal posiapply a sealing pressure to a can, a door. for 5 the vacuum chamber, a driving shaft, a constantly rotating pulley loosely 'rnounted thereon, a clutch on the shaft for engaging said pulley, cams on such shaft for operating 1 the valve and throwi n the plunger, a cam tion with respect to the tension of the springs described. which control it. i

The construction is one-which is entirely door ada ted to close the same, a cam on the door, a p un valve contro lled pipe for establishing vacuum conditions within the chamber, a power shaft, a constantly rotating pulley loosely mounted thereon,,a clutch for engaging sai shaft to said pulley, connections actuated by heat and vacuum, and theproper period of the closin of the door for throwing said time accorded to each operation. In the use I clutch, and cams on such shaft for actuating of a foot treadle machine, it is impossible to the plunger and the vacuum valve, substansecure uniformity in the several operations, tially as described. 7 a but the present apparatus secures this uniformitywithout any severe physical exertion on the art of the operator, Whose sole 3 office is to lace the capped .jars in position 3 and close the door, after which the vacuum sealing will be performed and the door auto matically thrown open in preparation for the inductionof another-capped jar.

' The inventiom is one Whichpermits the operations to be performed rapidly, uniformly, and Without the supervision of a by the initial closin of the-door. The pulley, being constant y revolved at a given speed, will revolvethe'shal't uniformly when E the clutch is thrown, so that the sealing 0 )er ations will be uniform and each jar will be l subjected to the same degree of pressure, I

combination of a sealing c iamber, a hinged door adapted to close the same, a cam on the door, a p valve contro led pipe fo r establishing vacuum conditions within the chamber, a power shaft, a constantly rotating pulley loosely mounted thereon, a clutch for engaging said the door cam-for throwing said clutch, cams on such shaft for actuating the plunger and the vacuum valve, and means for disengagexercises no discretion as regards the amount ing said clutch from said pulley after a preof pressure, nor the periods of time during which the sealing should be continued.

What We regard as new and desire to secure by Letters Patent is: I

1. In a vacuum sealing apparatus, a vacuum chamber, a valve for establishing vacuum conditions therein, a plunger having its tially as described.

GEORGE A. BEARDSLEY. DANIEL WARDELL. Witnesses:

JACOB J. Sonnrn'r, HARRISON M. SCHRADER.

i headwithin the chamber and in position to said cam in closing the door, substantially as- 2. In a vacuum sealin apparatus, the

. combination of a sealing c amber, a hinged automatic after the clutch has been thrown 'er within the sealing chamber, a i

3. In a'vacuuni sealin apparatus, theun er within the sealing chamber, a'

' shaft to said pulley, connections actuated by determined degree of revolution, substani on the door, and a mem er adapted to throw

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