US3777556A - Air squeeze ware tester - Google Patents

Air squeeze ware tester Download PDF

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Publication number
US3777556A
US3777556A US00126543A US3777556DA US3777556A US 3777556 A US3777556 A US 3777556A US 00126543 A US00126543 A US 00126543A US 3777556D A US3777556D A US 3777556DA US 3777556 A US3777556 A US 3777556A
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conveyor
tester
platform
ware
pieces
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Expired - Lifetime
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US00126543A
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A Zappia
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N33/0081—

Definitions

  • the active face of the presser head is formed of syn- 73/9 X thetic material, that portion thereof below a level at least equal to the transaxial dimension of a piece of 73/37 X ware above the platform having a coefficient of fric- Powers, .Ir.
  • Hollow glassware and certain other ware made from frangible material, must be capable of withstanding transaxial pressures up to specified minimums in order to be commercially acceptable; and itis therefore customary for manufacturers to subject such ware to calibrated pressure, whereby substandard wareis shattered and discarded, before delivering the ware.
  • devices for so testing the ware have relied upon spring means for applying the pressure, whereby accurate calibration for containers of various sizes has been impossible.
  • previously known devices for so testing ware have been relatively complicated and expensive and have been of such construction that fragments of shattered pieces have sometimes entered unbroken containers or have clogged the machinery.
  • the primary object of the present invention is to provide simple, inexpensive mechanism, readily introduced into a conventional conveyor line, for applying accurately calibrated transaxial pressure to each one of an advancing series of substantially identical articles of frangible ware.
  • a further object of the invention is to provide such a device which is readily shiftable into a position in which the ware will by-pass the pressureapplying means.
  • Still another object of the invention is to provide such a device which includes means for shifting the ware, as it approaches the pressure-applying means, to an unstable position upon the conveyor means whereby, if any article is broken, all of its fragments will fall away from the mechanism and the conveyor.
  • Another object of the invention is to provide, in connection with such shifting means, guide means cooperative with the upper ends of the pieces to restrain unbroken pieces against falling laterally from the conveyor.
  • Still another object of the invention is to provide, in connection with such apparatus, means whereby a piece of ware which has fallen into a prostrate position aligned with the direction of movement of the conveyor, will continue to move freely past the squeezing station without clogging the machinery, and will then be discarded from the line.
  • FIG. 1 is a plan view of an air squeeze ware tester constructed in accordance with the present invention, parts being broken away for clarity of illustration;
  • FIG. 2 is an end elevation of the same as viewed from the bottom of FIG. 1;
  • FIG. 3 is a side elevation taken from the right of FIG.
  • FIG. 4 is an enlarged, fragmentary sectional view taken substantially on the line 4-4 of FIG. 1;
  • FIG. 5 is an enlarged, fragmentary, sectional view, taken substantially on the line 5 of FIG. 1;
  • FIG. 6 is a fragmentary view illustrating means for facilitating travel of a ware piece in prostrate position past the prcsser head;
  • FIG. 7 is a fragmentary view illustrating means whereby such a prostrate piece will be discarded from the travelling line of ware;
  • FIG. 8 is a view similar to FIG. 5but showing a modified form of pressure head associated with a bottle of fancy configuration
  • FIG. 9 is an elevation taken from the right of FIG. 8.
  • FIG. 10 is a top plan view of the presser head of FIG. 9, shown partly in horizontal section.
  • the illustrated embodiment of my tester includes a base frame indicated generally by the reference numeral 10 comprising four upstanding legs, three of which, 11, 12 and 13 are illustrated in FIGS. 2 and 3.
  • Beams l6 and 17 may be joined as by spanners 73.
  • the tester comprises further an auxiliary frame indicated generally by the reference numeral 19.
  • Four upstanding legs, three of which are illustrated at 20, 21 and 22, are adapted to register substantially with legs 11, 12 and 13, and the unillustrated leg, of the base frame 10.
  • the legs 20 and 21 are supported from a slide rail 23, slidably mounted on the surface 18 of the beam 16, while the leg 22 and the unillustrated leg are supported from a similar slide rail 24 mounted to slide on the surface 18 of the beam 17.
  • the legs 21 and 22 constitute a first laterally 'spaced pair while the leg 20 and the unillustrated leg constitute a second laterally spaced pair.
  • a horizontal table 25 is supported from the leg pair 21-22 and a separate but coplanar table 26 is supported from the second leg pair.
  • An upper shelf 27 supports the driving motor 28 which, through a speed varying device 29 of any kind is connected to drive a vertical shaft 30 which carries and directly drives a pulley or sprocket 31.
  • a similar pulley or sprocket 32 is supported, in a common horizontal plane with the sprocket 31, upon a shaft 33 whose axis is parallel with the shaft 30; and a continuous belt conveyor 34 is trained about 0 the sprockets 31 and 32.
  • the conveyor comprises a pair of endless roller chains 35 and a series of blocks 37 each of which is formed, on its inner surface, with a pair of transverse sockets 36 receiving the chains 35 and secured thereto on the axes of the chain rollers.
  • the outer surface of each block 37 carries a pad 38 of rubberoid or other frictional material.
  • FIGS. 1 and 2 I have illustrated a rectilinear fragment of a conventional, continuous belt conveyor 40.
  • a conventional guideway 41 cooperative with the base portions of a continuous series of pieces of ware '45 movable on the conveyor 40 extends from a supply location (not shown) to a point near the entry side of the tester, while a similar guideway 42 extends from a point near the exit side of the tester to a delivery point.
  • An S-shaped section 43 of similar guide means extends from the terminus of the section 41 to a point near the active run of the conveyor 34; and a similar S-shaped section 44 extends from a point near the exit end of the conveyor 34 into registry with the guideway section 42. It will be seen, upon inspection of FIGS.
  • a second guide means 46 adapted to cooperate with the upper ends of the pieces of ware 45 moving between the guideway sections 43 and 44.
  • Said guide means 46 comprises a pair of screws 47 threadedly mounted in a frame element 48 for vertical adjustment and supporting, through swivel connections 49, a plate or bar 50 which closely overlies the open upper ends of ware pieces 45 as they pass between the adjacent ends of the guideway sections 43 and 44.
  • the lips 51 which straddle the upper regions (for instance, the finish 52 of a bottle) of the articles 45 to hold them against lateral tilting.
  • a plate 53 is adjustably supported from the lower surface of the table 25. As is most clearly to be seen in FIGS. 1 and 4, each end of the plate 53 is formed with a pair of aligned, elongated slots 54. For each such slot, the table 25 is penetrated by a screw 55 whose shank receives a headed nut 56, the shank of said nut being guidingly received in the corresponding slot and the head thereof spanning its associated slot, whereby said plate is supported. It will be clear that the threaded engagcment between the screw 55 and its nut 56 will clamp the plate 53 in any selected position of adjustment and that, upon loosening such threaded connection, the plate 53 may be adjusted toward and away from the active run of the conveyor 40.
  • a flange 57 depends from the terminal edge of the table 25 and a similar flange 58 depends from the adjacent end of the plate 53.
  • Two parallel screws 59 are operatively engaged between the flanges 57 and 58 for shifting the plate 53. As shown, the screws are threaded through the flange 57 and have swivel connections with the flange 58; and lock nuts 60 may be threaded on the screws 59 for clamping engagement on opposite sides of the flange 57 to maintain any selected position of adjustment of said screws.
  • Each such motor includes a cylinder and a piston 74 reciprocable therein.
  • Piston rods 62 project through corresponding ends of the motors 61 to support a presser head 63.
  • each piston rod carries a clevis 64 (FIGS. 1 and constructed and arranged to straddle a flange 65 of a base member 67, the clevises being secured to said flange by pivot pins 66 disposed upon axes parallel with the working surface of the active run of the conveyor 34.
  • a block 68 is suitably carried on that face of the base 67 remote from the flange 65, and a pad 69 of synthetic material is fixed to said block and presents a friction surface 70 toward the friction pads 38 of the blocks 37 of the conveyor 34, said surface 70 being generally parallel to the friction surfaces of the pads 38.
  • the opposite end regions of the pad surface 70 will retreat from the plane of the pads 38 as is clearly shown in FIG. 1, to facilitate entry of ware pieces between the pads 38 and 69, and departure therefrom.
  • the lower region of the pad 69 shall have a coefficient of friction significantly less than that of the upper, major region of the pad.
  • sheet urethane is a highly satisfactory material for the major portion of the pad 69, but that the lower region 71 should preferably be formed of a low-friction material such as Teflon.
  • the upward extent of the region 71 should be at least equal to the radius of the maximum transverse section of the ware pieces 45 being tested.
  • a ware piece should fall on the conveyor, so that it lies prostrate with its axis extending in the direction of travel of the conveyor 40, as suggested in FIG. 6, it will continue to travel freely with said conveyor with minimum frictional resistance to such travel.
  • the ware pieces will be urged to rotate upon their axes, not only by the force exerted against their sides by the traveling pads 38, but also by the frictional drag exerted upon them by the major areas of the pad 69.
  • any frictional drag exerted by the presser head 63 would tend to resist movement of the piece under the influence of the conveyor 34; and the provision of the low-friction strip 71 obviates that tendency.
  • a control panel or box for the mechanism is suggested at 72 in FIG. 3.
  • the legs 21 and 22 are removed, carrying with them the table 25 and the presser head assembly including the plate 53 and the motors 61.
  • the machine is brought to a selected rectilinear portion of the conveyor 40 and is moved, from left to right as viewed in FIG. 1, into a position in which the conveyor 34 largely overlies the conveyor 40 with the active, vertical surface of the conveyor 34 disposed just above the upper surface of the conveyor 40 and close to the inner edge of the latter.
  • the legs 21 and 22 and their supported mechanism will be replaced.
  • Guide sections 41 and 42 sized for supporting and guiding association with the lower regions of the ware to be processed are associated with the conveyor 40 and suitable guide sections 43 and 44 are also installed.
  • the lips 51 of guide means 46 will be adjusted so that they will barely clear the upper regions of the ware to be processed, and screws 47 are adjusted to bring the plate or bar 50 to a level which will barely clear the upper extremities of the ware to be processed.
  • the plate 53 will be adjusted by manipulation of the screws 59 to bring the surface 70 into a postion spaced from the pads 38 by a little less (perhaps oneeighth inch) than the diameter of the ware pieces when the pistons 74 are fully advanced, and the plate 53 is suitably locked or clamped in that position.
  • the driving motors for the conveyors 40 and 34 are energized, and the speed varying means 29 is adjusted so that the longitudinal speed of the conveyor 34 is preferably slightly greater than that of the conveyor 40; and ware pieces 45 are fed to the conveyor 40 at the above-mentioned remote source of supply.
  • Ware pieces will travel, substantially centrally located, upon the conveyor .40 until they encounter the guide means section 43 whereby, as they advance, they will be shifted laterally until they overhang the inner edge of the conveyor 40, at which time their upper ends attain cooperative association with the lips 51 of the guide means 46. At about this point, each ware piece will come into contact with the pads 38 of the active run of the conveyor 34. Thus, the conveyor 40 and the conveyor 34 cooperate to introduce the ware pieces successively to the inclined surface at the end of the presser head pad 69. It will be understood, of course, that gas (preferably air) under pressure of preselected value will have been introduced into the proximal ends of the cylinders 61 to press the pistons 74 into their limiting positions of projection of the head 63.
  • gas preferably air
  • the presser head 63 is disposed in opposing registration with the active run of the conveyor 34 and that the back-up shoe 39 sustains the pressure which will be exerted by the presser head against the ware pieces 45 as they pass the testing station.
  • the degree of pressure soexerted upon the ware will depend directly upon the pressure at which air, for instance, is supplied to the right hand ends of the cylinders 61, since the plate 53 is adjusted to conform to the diameter of the ware pieces being tested in such fashion that, when at least one piece of ware is disposed between the active run of the conveyor 34 and the presser head 63, the pistons 74will be backed away from the adjacent ends of their cylinders.
  • a stiff-bristled brush (not shown) may be mounted upon the auxiliary frame 19 with its bristles bearing upon the outer surface of the return run 77 of the conveyor 34 to remove any fragments which may adhere to the blocks 38.
  • the guideway sections 43 and 44 may be removed, the legs 21 and 22 with the table 25 and its suspended parts may be removed, and the auxiliary frame 19 may be bodily shifted to the position illustrated in broken lines in FIG. 2.
  • the conveyor 34 will be removed from its overlying relationship to the conveyor 40, a straight section (not shown) of guideway may be inserted to connect sections 41 and 42, the guideway 46 may be elevated to inoperative position and thereafter,
  • ware may be moved along the conveyor 40 without being subjected to the squeeze test and without interference by the parts of the ware tester disclosed herein.
  • Suitable means of any desired character may, if desired, be provided for shifting the frame 19 relative to frame 12 and/or for retaining the same in any position of adjustment, such a means being indicated by the reference numeral 78 in FIG. 2.
  • FIGS. 8 to 10 I have illustrated a modified form of presser head designed to facilitate adaptation of the tester to bottles or other containers of unconventional contour.
  • the reference numeral 80 indicates a base which is functionally similar to the base 67 of FIG. 5. However, the base is formed, adjacent its opposite ends, with vertically elongated slots 83, 83 which receive screws 81, 81 projecting from the rearward face of a block 82 and nuts 84 threaded onto the screwsSl are effective to retain the block 82 in any selected position of vertical adjustment relative to the base 80.
  • a pad 90 of synthetic material similar to that of the, pads 69 is bonded to the forward face of the block 82 and is suitably contoured to bear upon a selected surface, such as the waist 91, of the bottle 89 illustrated in FIG. 8 to exert test pressure upon that selected portion of the articles surface.
  • the lower edge of the base 80 may be provided with tapped holes 85 to receive screws 86 passing through holes 87 in a Teflon pad 88, constructed and designed to bear upon another surface of the bottle 89 and to serve the purpose of the strip 71 of FIG. 5.
  • the adjustable mounting of the block 82 on the base 80 inherently affords flexibility in the use of the presser head assembly with various shapes of ware.
  • a manufacturer may maintain a supply of block-and-pad elements which may be selectively used with a base 80 for cooperation with various stock sizes and shapes of ware to be tested.
  • the taper or retreat, at the opposite ends of the presser head may be achieved by curving the face 92 of the cast base 80 and bending,
  • An air squeeze ware tester comprising an elongated, substantially horizontal platform for supporting, during transit, a succession of pieces of frangible ware in a substantially upright attitude, endless belt conveyor means with one run having a surface arranged to parallel the length of said platform and disposed substantially in a vertical plane and closely above the plane of said platform, a presser head having a surface disposed in registering opposition to said conveyor run, pneumatic means for urging said presser head toward said conveyor run, and means for driving said conveyor to move such pieces successively between and past said surfaces.
  • the tester of claim 1 including guide means cooperative with such pieces to move them laterally, as they advance, to overhang a lateral edge of said platform in an unbalanced condition when they are located between said surfaces.
  • said pneumatic means comprises a cylinder supported near said platform on an axis transverse relative to the longitudinal dimension of said platform, a piston reciprocable in said cylinder and having a rod penetrating an end of said cylinder and extending toward said conveyor run, means operatively connecting said piston rod to said presser head, and means for supplying gas under controlled pressure to that end of said cylinder remote from said conveyor run.
  • the tester of claim 3 including means operable to shift said cylinder bodily toward and away from said conveyor run.
  • said presser head is elongated in the direction of length of said platform
  • said pneumatic means comprising a pair of cylinders, spaced apart in the direction of length of said platform and supported near said platform on parallel axes transverse relative to the longitudinal dimension of said platform, a piston reciprocable in each cylinder and having a rod penetrating an end of its cylinder and extending toward said conveyor run, pivot means for each piston rod, said pivot means being disposed on substantially vertical axes and connecting said piston rods respectively to said presser head adjacent opposite ends of said presser head, and means for supplying gas under substantially the same pressure to those ends of said cylinders remote from said conveyor run.
  • the tester of claim 10 including guide means paralleling said second conveyor beyond both ends of said first-named conveyor and cooperating with the lower portions of such pieces moving on said second conveyor to hold them'near the longitudinal center line of said second conveyor, second guide means between said first-named guide means and each end of said presser head and cooperating with the lower portions of moving pieces to move them laterally relative to said second conveyor to an unstable position overhanging one edge of said second conveyor before they encounter said first-named conveyor and then back substantially to the center line of said second conveyor after they depart from said first-named conveyor, and third guide means cooperating with the upper portions of such pieces while they are between said surfaces to restrain them against lateral tilting.
  • said presser head comprises a base, a block secured to said base, and pad means of synthetic material secured to said block to define said presser head surface, the upper portion of said pad having a coefficient of friction significantly higher than that of the lower portion thereof.
  • a base frame including a pair of beams supported from legs and formed to provide parallel, horizontal, upwardly presented surfaces elongated in a direction transverse to the direction of movement of such pieces of ware, said beam surfaces being disposed below the level of said platform, and an auxiliary frame comprising rail means longitudinally slidably disposed on each such beam surface, and leg means upstandingly supported on said rail means and supporting said conveyor means, said presser head, said pneumatic means and said conveyor driving means above the level of said platform.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Disintegrating Or Milling (AREA)
US00126543A 1971-03-22 1971-03-22 Air squeeze ware tester Expired - Lifetime US3777556A (en)

Applications Claiming Priority (1)

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US12654371A 1971-03-22 1971-03-22

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US3777556A true US3777556A (en) 1973-12-11

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US00126543A Expired - Lifetime US3777556A (en) 1971-03-22 1971-03-22 Air squeeze ware tester

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US (1) US3777556A (de)
JP (1) JPS5214991B1 (de)
BE (1) BE781090A (de)
CA (1) CA965258A (de)
CH (1) CH547491A (de)
DE (1) DE2213940C3 (de)
ES (1) ES401002A1 (de)
FR (1) FR2131542A5 (de)
GB (1) GB1333689A (de)
IT (1) IT960367B (de)
SE (1) SE376078B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885421A (en) * 1973-12-20 1975-05-27 Nittoku Metal Industry Co Ltd Glass container testing apparatus
US4768372A (en) * 1985-04-09 1988-09-06 Martin Lehmann Test device, in particular for bottle-shaped containers as well as procedure for testing same
US5351552A (en) * 1993-11-10 1994-10-04 Emhart Glass Machinery Investments Inc. Machine for squeeze testing glass containers
FR2834790A1 (fr) * 2002-05-16 2003-07-18 Nestle Waters Man & Technology Dispositif de controle de rigidite d'un contenant en polyester
US20180265301A1 (en) * 2017-03-15 2018-09-20 Owens-Brockway Glass Container Inc. Container Conveyor Apparatus with an Adjustable Railing

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54167394U (de) * 1978-05-17 1979-11-26
DE2922535C2 (de) * 1979-06-01 1980-10-23 Berolina Kunststoff-Gesellschaft Mbh & Co Verarbeitungs- U. Vertriebs Kg, 1000 Berlin Verfahren und Vorrichtung zur Bestimmung der Festigkeit von Kunststofflaschenkästen
CN107402159A (zh) * 2017-08-11 2017-11-28 安徽优乐亿乳业有限公司 用于瓶装奶茶强度检测装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2058805A (en) * 1933-08-26 1936-10-27 Wingfoot Corp Apparatus for demonstrating nonskid properties of rubber tires
US2937749A (en) * 1956-12-19 1960-05-24 Owens Illinois Glass Co Article gauging and selecting apparatus
US3410402A (en) * 1966-05-26 1968-11-12 Armstrong Cork Co Glassware inspection device
US3489275A (en) * 1968-01-29 1970-01-13 Power Mfg Inc Pressure prover for frangible containers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5144677A (de) * 1974-10-08 1976-04-16 Hirotoshi Higuchi

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2058805A (en) * 1933-08-26 1936-10-27 Wingfoot Corp Apparatus for demonstrating nonskid properties of rubber tires
US2937749A (en) * 1956-12-19 1960-05-24 Owens Illinois Glass Co Article gauging and selecting apparatus
US3410402A (en) * 1966-05-26 1968-11-12 Armstrong Cork Co Glassware inspection device
US3489275A (en) * 1968-01-29 1970-01-13 Power Mfg Inc Pressure prover for frangible containers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885421A (en) * 1973-12-20 1975-05-27 Nittoku Metal Industry Co Ltd Glass container testing apparatus
US4768372A (en) * 1985-04-09 1988-09-06 Martin Lehmann Test device, in particular for bottle-shaped containers as well as procedure for testing same
US5351552A (en) * 1993-11-10 1994-10-04 Emhart Glass Machinery Investments Inc. Machine for squeeze testing glass containers
FR2834790A1 (fr) * 2002-05-16 2003-07-18 Nestle Waters Man & Technology Dispositif de controle de rigidite d'un contenant en polyester
US20180265301A1 (en) * 2017-03-15 2018-09-20 Owens-Brockway Glass Container Inc. Container Conveyor Apparatus with an Adjustable Railing
US10099862B2 (en) * 2017-03-15 2018-10-16 Owens-Brockway Glass Container Inc. Container conveyor apparatus with an adjustable railing

Also Published As

Publication number Publication date
DE2213940B2 (de) 1977-08-18
CH547491A (fr) 1974-03-29
ES401002A1 (es) 1975-09-16
SE376078B (de) 1975-05-05
FR2131542A5 (de) 1972-11-10
CA965258A (en) 1975-04-01
DE2213940C3 (de) 1978-04-13
DE2213940A1 (de) 1972-10-12
GB1333689A (en) 1973-10-10
IT960367B (it) 1973-11-20
JPS5214991B1 (de) 1977-04-26
BE781090A (fr) 1972-07-17

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