US1818557A - Cover lining apparatus - Google Patents

Description

' Augqll, 1931- c. w. JOHNSON COVER LINING APPARATUS 4 Sheets-Sheet '1 Filed Oct. 12, 1928 Aug. 11, 1931. c. w. JOHNSON COVER LINING APPARATUS Filed Oct. 12, 1928 4 Sheets-Sheet 2 Jrgbjeazior 69% rlzefabasoz'a C. W. JOHNSON COVER LINING APPARATUS Aug. 11, 1931.

Filed Oct. 12; 1928 '4 Sheets-Sheet 3 Aug. 11, 1931'. c. w. JOHNSON COVER LINING APPARATUS Filed Oct. 12, 1928 4 Sheets-Sheet 4 w jweraior 69% mJohvason 4y a i Mm ezi'fly Patented Aug. 11, 1931 ,UNITED STATES PATENT OFFICE CLYDE W. JOHNSON, OF SAUGUS, MASSACHUSETTS, ASSIGNOR TO DEWEY AND ALMY CHEMICAL COMPANY, OF CAMBRIDGE, MASSACHUSETTS, A CORPORATION OF MAS- SACHUSETTS COVER LININ G APPARATUS Application filed October 12, 1928. Serial No. 312,190.

This invention pertains to cover or cap lining apparatus designed to apply a marginal band of lining compound to the inner surface of a receptacle cover or cap, and relates more particularly to means for mov ing a distributing nozzle or nozzles in a predetermined ath relatively to a cover or cap; to means or supporting and, in some lining compound rapidly and accurately to covers or caps of a wide range of sizes and in certain embodiments to covers of almost any contour, whether bounded by straight or curved lines or combinatlons thereof,

-and is preferably so designed as to apply the compound at a substantially uniform linear rate of speed regardless of the shape of the cover, thus ensuring the deposit of lining compound in a band of uniform width and depth. 5

In the accompanying drawings I have illustrated certain desirable embodiments of the invention by way of example but wish it to be understood that the invention, in so far as its broader principles are concerned, is not to be restricted to the specific mechanism here illustrated but is capable of embodiment in equivalent mechanism and without reference to the precise proportion of parts, the specific arrangement of parts, or the particular adjunctive elements to be employed therewith. 4

In the drawings Fig. 1 is a front elevation, with certain parts broken away, showing one desirable embodiment of the present invention for applying lining compound to circular covers;

Fig. 2 is a fragmentary vertical section to larger scale, substantially on the line 22 of Fig. 1;

Fig. 3 is a horizontal section substantially on the line 3'3 of Fig. 1, certain parts being omitted;

Fig. 4 is a fragmentary horizontal diagrammatic section, substantially on the same plane as Fig. 3, but illustrating a modified form of apparatus and omitting certain parts;

Fig. 5 is a diagrammatic fragmentary horizontal section illustrating means for rotating the chuck shaft in lining a rectangular cover;

Fig. 6 is a fragmentary diagrammatic plan showing other means for rotating the nozzle;

Fig. 7 is a diagrammatic plan view showa plurality of nozzles arranged to line in di erent portlons respectively-of the same cover; and

Fig. Sis a section on the line 8-8 of Fig.

Referring first to Figs. 1, 2 and 3, the invention is shown as embodied in a machine comprising a frame which consists of a ho1-.

low box-like base casting -1 mounted upon legs of convenient height, such casting being provided with bearings 2 and 3 on its opposite sides forming journals for the horizontal drive shaft S. This shaft projects out through the side of the frame andmay be provided with a pulley or other drive element, not shown.

The box-like frame member 1 is preferably provided with a substantially horizontal top member or table 4, and this top member supports a pair of spaced substantially vertical bearing brackets 5 and 6, integral if desired with the part 4, providing journal bearings for vertical shafts 7 and 8 respectively. These shafts are furnished at their lower ends with beveled gears 9 and 10 meshing with beveled gears 11 and 12 respectively fixed to the shaft S, the arrangement being such that the shafts 7 and 8 shafts 7 and 8 respectively. These disks (Fig. 3) are preferably provided with radial slots 15 and 16 respectively, the disks with their drive gears being so arranged that the slots 15 and 16 are always similarly oriented.

Brackets 18 and 19 are adjustably mounted within the slots 15 and 16 respectively, said brackets being secured in adjusted position by means of bolts 20 and 21 respectively (Fig. 1). The brackets 18 and 19 carry upstanding crank pins 22 and 23 respectively, said pins being received in journal openings in the opposite ends of an elongate nozzlesupporting bar 24. This bar is preferably provided at a point substantially midway between its ends with an elongate slot permitting adjustment of a nozzle 25 which is mounted therein. While the slot and the central arrangement of the nozzle is preferable, this precise arrangement is not necessary, since the simultaneous rotation of the crank pins 22 and 23 by the gearing above described causes a bodily movement of the bar 24 in which every element of the bar describes a circle of a radius equal to the distance of the crank pins from their centers of revolution, it being understood that the crank pins are adjusted to equal distances from their centers.

mally closed valve for controlling the delivery of the lining compound and this valve is actuated as hereinafter described by means of a flexible wire or other suitable connec' tion 28.

The tank 27 may, if desired, be mounted upon an elevated shelf 29 supported upon posts 30 and 31 rising from the base portion of the frame. The shelf 29 also supports a pair of bearing brackets 32 and 33. respectively, providing journal bearings for asub stantially horizontal shaft 34. This shaft is furnished at one end with a sprocket wheel 36 which is driven by means of a chain 37 engaging a sprocket wheel 38 fixed to the shaft S. Preferably the sprocket wheel 36 is loose on the shaft 34 but may be connected thereto by means of aclutch 39 (preferably of one revolution type) operated by means of a lever 40 and a rod 41 leading downwardly to a suitable handle or treadle, not shown, for convenient actuation by the operator.

The shaft 34 carries a cam 42 (Figs. 1 and 2) engaging a cam follower roll 43 mounted on a lever 44 fulcrumed at 45 in a bracket 46 mounted on the shelf 29. Preferably the rear end of the lever 44 rests upon a spring actuated plunger 47 tending constantly to hold the roll 43 in engagement with the cam 42. The forward end of the lever 44 is preferably forked at 48 and engages between fixed collars on a rod 49 vertically movable in a suitable guide member 50 at the front edge of the shelf 29. The valve actuating wire '28 above referred to is attached at its upper end to the lower end of the rod 49 so that, whenever the cam follower roll 43 is depressed by direction of the cam 42, the wire 28 is pulled to open the valve in the nozzle 25.

The shaft 34 also carries a cam 51 engaging a follower roll on a lever 52 fulcrumed at 53 on the bracket 46, and the rear end of the lever 52 is connected, by means of a link 54, to the rear arm 55 of a lever fixed upon a shaft 56 turning in bearings in brackets 57 and 58 projecting downwardly from the under side of the table 4. The forward arm 59 of this lever preferably is forked as indicated at 59*, 59 (Fig. 1) and supports a ball bearing collar 60 embracing a shaft 61 journaled in a bearing 62 carried by a bracket 62 depending from table 4. *The upper part of shaft 61 is housed in a sleeve 61 arranged to rotate and to slide vertically in a bearing 61 carried by the table 4. The sleeve 61 telescopes over shaft 61 and is splined to the latter. The lower end of the sleeve 61 rests upon the ball bearing collar 60 and the sleeve is furnished with a collar or flange 62 supporting the lower end of a spring 63, whose upper end engages a shoulder on the bearing 61 the spring thus normally tending to depress the sleeve 61* and at the same time to hold the roll on lever 52 in operative engagement with the cam 51.

A cover-supporting chuck 64 (Fig. 3) is mounted on the upper end of the sleeve 61 above the upper surface of the table 4. This chuck 64 may be of any suitablecontour and is provided with 'a plurality of dogs 65 adapted to engage the edge of the cover or cap C to be lined. Preferably the chuck 64 is provided with divergent channels or slots 66 in which the dogs 65 are adjustably mounted so as to permit the chuck to be used for holding covers of a wide range of sizes and to permit accurate centering of the cover with respect to the path of the nozzle.

The lower end of the shaft 61 carries a beveled gear G which is always in mesh with a beveled gear G fixed on shaft S. Preferably the gears G and G are so arranged as to turn the shaft 61 oppositely to the shafts 7 and 8. Preferably the gear G is normally loose on the shaft but may be connected thereto for driving by means of a clutch K which is actuated by means of a cam on the end of an arm K connected to plished by permanently disconnecting the clutch K, or by omission of the gears G and G as may be preferred.

In the modified arrangement shown in Fig. 4 it is assumed that the machine is of the general construction above described exmeans of a swivel roller or ball cept for the specific means for moving the nozzle or nozzles in the desired path. In this arrangement the table 4" is provided with parallel rails 70 forming a rectilinear guideway for a carriage 71. This carriage is furnished with a pin (2 projecting down wardly through a slot in the table into en-- gagement with an actuating groove 74 in a rotating cam drum 73. v

The table 4 is also provided with a second pair of spaced parallel rails 75 arranged at right angles to the rails 70 and furnishing a guideway for a secondary carriage 76. This carriage is also rovided with a downwardly projecting pin 7 engaging a slot 78 in a cam 79. The cams 73 and 79 are here shown as cylindrical drum cams, but it is to be understood that cams of other type may be These cams are gearing, not shown, but preferably comprising intermeshing beveled'gears of a type c common in the arts. And the cam paths are preferably so designed as to ensure uniform linear speed of the nozzle or nozzles relativeto the surface of the cover, including the corners of angular covers, so that a uniform band of lining compound will be .=.deposite d at all parts of the margin of the cover. The carriage 76 supports a pair of spaced parallel rails 80 forming a guideway substantially at right angles to the path of,

.movement of the carriage 76. T1115 guideway. receives a pin 81 projecting downwardly from a carria e82 sliding in a rectilinear guideway de ned by spaced rails I 83 mounted on. the primary carriage 71. The guideway defined by rails 83 is at right angles to the path of movement of the primary carriage 71, and the carriage 82 supports an elongatebar 84 also extending at rightangles to. the path of movement of the carriage '82 and preferably provided with an elongate slot or slots 85for the reception of the nozzle or nozzles 86. The outer end portion 87 of the bar 84 may be supported 1n any desired manner, for example by upon the upper surface of the table 4.

In lining covers of non-circular shape, for example rectangular, it may also be de sirable, although not always necessary, to

rotate-them during the hning operation,

88 resting and this may be accomplished by means i tour similar to that of the cover to be lined.

This gear meshes with a spur pinion Gr carried by an arm G pivoted to swing about a shaft Gr as'a center. A sprocket chain G transmits movement from the shaft G to the pinion G". A spring G keeps the pinion G constantly in mesh with the gear G The shaft G is driven in timed relation to the cams 73 and 79 by means of any suitable mechanism, not shown. The gear G is preferably removable from the shaft 61 to permit its replacement by gears of other shapes and sizes (including circular gears) according to the shape of the cover v to be lined.

The operation of the device shown in Figs. 1 to 3 inclusive is substantially as follows, it being assumed that normally the shaft 34 is stationary, the valve in the nozzle 25 is closed, the cover supporting chuck 64 is in its lowermost or inoperative position as shown in Fig 1, and that the shaft S is continuously operating to turn the cranks 22 and 23 in synchronism, thus bodily moving the bar 24 and causing the nozzle 25 to describe the circular path whose radius is equal to the distance of one of the cranks from its center of rotation.

The dogs having been adjusted so as to center a cover with reference to the path of rotation of the nozzle, a cover is (either manually or by appropriate mechanical means) placed upon the chuck with its edges in engagement with dogs 65. The operator then moves the rod 41 to clutch the sprocket wheel 36' to the shaft 34 thereby causing the cams 42 and 51 to rotate. These cams are so timed that the lever arm .69 is first elevated to raise the cover holding ,chuck into operative position with the cover disposed in a plane immediately below the dehvery end of the nozzle 25 and simultaneously clutching gear G to shaft 4,

thereby rotating the chuck and the cover,

and While the chuck is held in this elevated of a continuous band of the lining compound to the marginal portion of the cover, the rotation of the cover causing the lining compound to flow centrifugally into close contact with the cover rim. When lining covers of certain types the rotation of the chuck may not be necessary and by removing gears G, G, or permanently disengaging clutch K such rotation may be stopped. At the end of a suflicient and predetermined number of revolutions of the nozzle the valve is closed b further movement of the cam 42 and the c uck 64 is permitted to return to its inoperative position by the action of the cam 61. The clutch 39* is now disengaged automatically or manually, and thecover is removed from the chuck by hand or appropriate mechanical means. A new cover is now embodied and the above sequence of operations is repeated.

With the arrangement shown in Fig. 4, which is particularly intended for use in lining covers of other than circular contour, although capable of lining circular covers as well, the cam grooves 74 and 78 are so designed as to impart the desired coordinates of motion to the carriages 71 and 82 where.- by to cause the nozzle-supporting member 84 to move bodily in such manner that every element of said nozzle-supporting member describes a path corresponding to the shape of the cover to be lined. Thus by the .provision of appropriate dwells in the cams the member 84 may be caused to move in a rectilinear path, eitherhorizontally or ver-' tically as viewed in Fig. 4, during which but one of the cams 73 or 79 is active, or by an appropriate combination of active portions of the two cams the member 84 with its nozzle may be caused to describe circular or other curved paths of movement. It is thus readily possible to line a cover of a contour such as indicated at C (Fig. 4) having substantially straight sides united by curves or arcuate portions, the cover being rotated if desired by the mechanism of Fig. '5.

As shown in Fig. 4 the member 84 is arranged to support a plurality of nozzles 86 so that several covers may be lined at once, it being understood that in the same way the nozzle-supporting bar 24 of Figs. 1 to 3 inclusive may carry a plurality of nozzles with provision of appropriately formed chucks in each instance adapted to support a similar number of covers.

In place of the mechanism shown in Fig. 4 I may guide the nozzle (or nozzles), if desired by means of a fixed cam of desired contour with which a nozzle carrier is directly engaged. Thus as shown in Fig. 6 I may provide a cam plate 90, supported in a plane parallel to or coincident with the plane of the cover C (when the latter is in compound receiving position) and the nozzle 25 is mounted on a carrier 91 having follower rolls 92 engaging the cam path 93 provided in the cam plate. The carriage is provided with a drivingarm preferably resiliently extensible (as for example consisting of telescoping spring pressed parts) carrier 91 to permit it to follow covers of different sizes.

In Fig. 7 I have indicated diagrammatically an arrangement in which nozzles C and C are caused to travel first in one direction and then in the other a distance less than the entire distance around the cover. For example, each nozzle may move half way around the cover and then back again. This is readily accomplished, as in Fig. 4, by the provision of a set of cams for each nozzle.

\Vhile I have herein disclosed certain desirable arrangements for moving the nozzle in closed paths of predetermined contour I contemplate that other and equivalent means may be designed for the purpose and I wish it to be understood that all *such means are to be considered as falling within the scope of the invention and defined by the appended claims.

I claim:

1. Apparatus for moving a distributing nozzle whereby to apply a lining compound to the marginal portion of a cover or cap, said apparatus comprisinga nozzle-supporting means movable in a plane, a nozzle on the nozzle-supporting means, and means for imparting to said nozzle-supporting means a movement in an orbit substantially coincident with the contour of the cover to be lined.

2.- Apparatus for moving a distributing nozzle whereby to apply a lining compound to the marginal portion of a cover or cap, said apparatus comprising nozzle-supporting means movable in a plane, a nozzle on the nozzle-supporting means, and means including two elements rotating in timed relation for "imparting to'said nozzle-supporting means a bodily movement in an orbit substantially following the contour of the cover to be lined.

3. Apparatus for moving a distributing nozzle whereby to apply lining compound to the marginal portion of a cover or cap disposed in a substantially horizontal plane, said apparatus comprisinga nozzle-supporting member movable in a substantially horizontal plane, a nozzle carried by the nozzlesupporting member, and means for supporting and moving said nozzle-supporting member in an orbit so that all points therein describe closed paths corresponding to the contour of'the cover or cap to be lined.

. nozzle whereby to apply lining compound to the marginal portion of a cover or cap disposed in a substantially horizontal plane, said apparatus comprising an elongate nozzle-supporting bar disposed in a substantially horizontal plane a nozzle carried by said bar and a pair of synchronously moving actuating members cooperating to impart bodily movement to the bar in a horizontal plane, said actuating members imparting such coordinates of motion to the bar as to cause the nozzle carried thereby to follow the contour of the cap or cover.

5. Apparatus for moving a distributing nozzle whereby to apply lining compound to the marginal portion of a cover or cap, said apparatus comprising a nozzle-supporting member having provision for adjustably mounting a nozzle thereon, a nozzle carried thereby and a plurality of synchronously rotating actuating members arranged to impart such coordinates of motion to the nozzle-support-ing member as to cause the nozzle substantially to follow the contour of the cover.

6. Apparatus for moving a distributing nozzle whereby to apply lining compound to the marginal portion of a cover or cap, said apparatus comprising a nozzle-supporting member, a nozzle carried thereby, a pair of rotating cranks for moving said member, and means for simultaneously rotating said cranks whereby to impart bodily movement to the supporting member in such a path as to cause the nozzle carried thereby substantially to follow the contour of the cover.

7. Apparatus for moving a distributing nozzle whereby to apply lining compound to the marginal portion of a cover or cap, said apparatus comprising a nozzle-supporting member, a nozzle carried thereby, a pair of rotary cranks engaging said member, said cranks always being similarly oriented, and means for rotating said cranks synchronously at the same speed. V

8. Apparatus for moving a distributing nozzle whereby to apply lining compound to the marginal portion of a cover or cap,said

apparatus comprising a nozzle-supporting member, a nozzle carried thereby, a pair of rotary cranks engaging said member, means providing for adjustment of the radialdistance of said cranks from their respective centers of rotation, and means for rotating said cranks synchronously at the same speed.

9. Apparatus for moving a distributing nozzle whereby to apply lining compound to the marginal portion of a cover or cap, said apparatus comprising a bar having provision for mounting the nozzlethereon intermediate its ends, a nozzle carried there by a pair of cranks engaging opposite ends respectively of the bar, said cranks being similarly oriented and at substantially equal distances from their centers of rotation, and means for rotating the cranks synchronously at the same speed whereby to move the nozzle mounted on the bar in a circular path of predetermined diameter. 7

10. Apparatus for inoving a distributing nozzle whereby to apply lining compound to the marginal portion of a coveror cap, said apparatus comprising spaced crank disks turning in a horizontal plane, each disk having a radial slot therein, a crank pin adjustably secured in each slot, gearing for driving the crank disks synchronously at the same speed in the same direction, and an elongate bar whose opposite ends have journal openings receiving the respective crank pins, said bar having provision for mounting a distributing'nozzle thereon.

11-. Apparatus for moving a distributing nozzle whereby to apply lining compound to the marginal portion of a cover or cap, said apparatus comprising a chuck for holding the cover or cap, and means for moving the distributing nozzle bodily in an orbit conforming to the contour of the cover.

12. Apparatus for moving a distributin nozzle whereby to apply lining compoun to the marginal portion of a cover or cap, said apparatus comprising a chuck plate having slots therein, ogs adjustably mounted to the slots for positioning a cover on the chuck, a distributing nozzle disposed above the plane of the chuck, and means for moving the nozzle in a path substantially similar to the contour of the cover.

13. Apparatus for moving a distributing nozzle whereby to apply lining compound to the marginal portion of a cover or cap, said apparatus comprising a vertically movable but normally stationary chuck for holding the cover or cap, a distributing 'nozzle, means for moving the nozzle in a horizontal plane to describe. a path similar to the contour of the cover, and means for raising the chuck from normal cover-receiving position to a plane immediately below the plane of movement of the nozzle.

14:. Apparatus for moving a distributing nozzle whereby to apply lining compound to the marginal portion of a cover or cap, said apparatus comprising a distributing nozzlemovable in a substantially horizontal plane,

means for moving the nozzle bodily in an or- 15. Apparatus for moving a distributingnozzle whereby to apply lining compound to the marginal portion of a cap or cover,'said apparatus comprising a distributing nozzle movable in asubstantially horizontal plane,

means for moving the nozzle in a closed path corresponding in outline to the contour of the cover, a cover-supporting chuck normally disposed in a plane substantially below the plane of movement of the nozzle, and cam actuated means for determining the delivery of lining compound fromthe nozzle.

16. Apparatus for moving a distributing nozzle whereby to apply lining compound -to the marginal portion of a cap or cover disposed in a substantially horizontal plane, said apparatus comprising a distributing nozzle movable in a substantially horizontal plane means for moving the nozzle in a closed path corresponding in outline to the contour of the cover, a cover-supporting chuck normally disposed in a plane substantially below the plane of movement of the nozzle, and means operating in timed relation with the means for moving the distributing nozzle for raising the chuck to position the cover mounted thereon in operative relation to the nozzle and for determining the delivery of lining compound from the nozzle.

17. Apparatus for moving a distributing nozzle whereby to apply lining compound to the marginal portion of a cover or cap disposed in a substantially horizontal plane, said apparatus comprising a distributing nozzle movable in a substantially horizontal plane, means for moving the nozzle in a closed path corresponding in contour to that of the cover, a cover-supporting chuck normally disposed in a plane substantially below the plane of movement of the nozzle, a

rotary cam shaft turning in synchronism.

with the means for moving the nozzle, cam means mounted on the shaft for lifting the chuck to operative position and for initiating the delivery of lining compound from the nozzle,-and a one revolution clutch for driving the came shaft.

18. Apparatus for moving a distributing nozzle whereby to apply lining compound to the marginal portion of a cap or cover, said apparatus comprising nozzle-supporting means movable in a plane, means for imparting to said nozzle-supporting means'a movement such that the nozzle describes a ath substantially similar to the contour o the cover to be lined, and means for turnin the cover in its own plane at a velocity di fering from that of the nozzle-supporting means.

19. Apparatus for moving a distributing nozzle whereby to apply lining compound to the marginal portion of a cap or cover,

said apparatus comprising nozzle-supporting means movable in a plane, means for imparting to said nozzle-supporting means a movement such that the nozzle describes a path substantially similar to the contour of the cover to be lined, and means for rotating the cover in a direction opposite to the coated.

8th day of Oct., 1928.

the cover, for rotating the cover.

21. A machine for coating irregular shaped can ends comprising a coating nozzle, a-can end chuck for presenting a can end to said nozzle for coating and for holding said end stationary during coating, means for supporting said nozzle and for moving the same in a path conforming to the channel in the end to be coated, and a control valve for, said nozzle.

22. A machine for coating irregular shaped can ends comprising a coating nozzle, a can end chuck for presenting a can end to said nozzle for coating and for holding said end stationary during coating, means for supporting said nozzle and for moving the same in a path conforming to the channel in the end to be coated, a control valve for said nozzle, a cam and devices operated thereby for opening the valve when the end is properly presented for coating and for closing the valve after the end has been Signed by me at Cambridge, Mass. this CLYDE W. JOHNSON.

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