Apparatus for intermittently applying deposits of adhesive onto a moving web of material

Claim 2

Apparatus for intermittently applying deposits of adhesive at predetermined locations on a face of a moving web of material; said apparatus comprising: adhesive extruding head means positioned adjacent the face of the moving web of material for receiving therein and extruding therefrom adhesive onto the face of the moving web of material in a predetermined pattern; adhesive supply and conduit means connected with said extruding head means for containing a supply of adhesive under pressure and for conveying the adhesive to said extruding head means; selectively operable, metering pump means positioned in said adhesive conduit means for selectively pumping metered amounts of adhesive from said supply means through said conduit means to said extruding head means; and control and drive means connected with said pump means for selectively operating said pump means intermittently for predetermined time periods for timed, intermittent, metered pumping of adhesive to said extruding head means for timed, intermittent application of predetermined amounts of adhesive onto the face of the moving web of material at predetermined intervals.

Claim 3

Apparatus, as set forth in claim 1, in which said adhesive extruding head means comprises a generally flat plate member having a forward, straight, longitudinally-extending edge positioned adjacent and transversely across the face of the moving web, said plate member being connected with said adhesive conduit means and including internally thereof a plurality of interconnected channels leading from the connection with said conduit means and a plurality of extruding port means spaced along the length of said forward edge and connected with said channels for receiving adhesive therefrom and extruding adhesive onto the face of the moving web in transversely spaced-apart, longitudinally-extending sets of lines of predetermined length and in which said sets are longitudinally spaced-apart at predetermined intervals.

Claim 4

Apparatus, as set forth in claim 1, in which said control and drive means comprises motor means, first mechanical drive means connected with and driven by said motor means, cam means connected with said first mechanical drive means for being rotated thereby, cam follower means in engagement with said cam means for being linearly reciprocated back and forth thereby, rack and pinion gear means in which said rack is connected with said cam follower means for reciprocating back and forth linear movement therewith and for rotating said pinion back and forth thereby, second mechanical drive means connected with said metering pump means for driving said pump means during operation thereof, and one-way clutch means connected between said pinion of said rack and pinion means and said second mechanical drive means for operating said second mechanical drive means during rotation of said pinion means in one direction and for not operating said second mechanical drive means during rotation of said pinion means in the other direction, whereby said pump means is intermittently driven for predetermined time periods in relation to the profile of said cam means.

Claim 5

Apparatus, as set forth in claim 3, in which said first mechanical drive means comprises a first endless chain and pair of sprockets carrying said chain in which one of said sprockets is connected to said motor means and the other of said sprockets is connected to said cam means; said second mechanical drive means comprises a second endless chain and pair of sprockets carrying said chain in which one of said sprockets is connected with said one-way clutch means and the other of said sprockets is mechanically connected with said pump means, and said control land drive means further includes a linearly reciprocating slide member carrying said cam follower and said rack of said rack and pinion means.

Claim 6

Apparatus, as set forth in claim 1, in which said apparatus further includes valve means positioned in said adhesive conduit means between said pump means and said extruding had means for being opened to allow the passage of adhesive therethrough during operation of said pump means and for closing to stop the flow of adhesive through said conduit means when said pump control and drive means is inoperable, and control means connected with said adhesive valve means and with said pump control and drive means for closing said valve means upon said pump control and drive means becoming inoperable.

Claim 7

Apparatus, as set forth in claim 5, in which said pump control and drive means includes a motor means and in which said adhesive valve control means comprises electrical circuit means connected with said motor means and including a solenoid actuated, normally closed switch means which is in the closed position to complete the circuit through said circuit means during operation of said motor means and which will open to break the circuit through said circuit means upon stopping of said motor means, pressurized fluid supply and conduit means connected with said adhesive valve means for supplying fluid under pressure thereto for operating said valve means between the open and closed positions thereof, and solenoid operated, two position valve means located in said fluid conduit means and connected with said electrical circuit means and being maintained in a first position thereof when the electrical circuit is completed through said circuit means by operation of said motor means to provide the flow of fluid under pressure through said fluid conduit means to said adhesive valve means for opening said adhesive valve means, and for moving to a second position thereof upon breaking of the circuit through said circuit means by stopping the operation of said motor means to provide the flow of fluid under pressure through said fluid conduit means for closing said adhesive valve means and preventing the flow of adhesive through said adhesive conduit means to prevent leaking of adhesive from said extruding head means when said apparatus is inoperative.

Claim 8

Apparatus for intermittently applying deposits of adhesive at predetermined locations on a face of a moving web of material; said apparatus comprising: adhesive extruding head means comprising a generally flat plate member having a forward, straight, longitudinally-extending edge positioned adjacent and transversely across the face of the moving web, said plate member including internally thereof a plurality of interconnected channels for receiving and conveying adhesive therethrough, and a plurality of extruding port means spaced along the length of said forward edge and connected with said channel for receiving adhesive therefrom and for extruding adhesive onto the face of the moving web of material in a predetermined pattern of spaced-apart longitudinally-extending sets of lines; adhesive supply and conduit means connected with said channels of said extruding head means for containing a supply of adhesive under pressure and for conveying the adhesive to said extruding head means; selectively operable, metering pump means positioned in said adhesive conduit means for selectively pumping metered amounts of adhesive from said supply means through said conduit means to said extruding head means; and control and drive means connected with said pump means for selectively operating said pump means intermittently for predetermined time periods for timed, intermittent, metered pumping action of adhesive to said extruding head means for timed intermittent application of adhesive onto the face of the moving web of material at predetermined iNtervals to form longitudinally spaced-apart sets of lines of predetermined length at predetermined intervals, said control and drive means comprising motor means, first mechanical drive means connected with and driven by said motor means, cam means connected with said first mechanical drive means for being rotated thereby, cam follower means in engagement with said cam means for being linearly reciprocated back and forth thereby, rack and pinion gear means in which said rack means is connected with said cam follower means for reciprocating back and forth linear movement therewith and for rotating said pinion back and forth thereby, second mechanical drive means connected with said pump means for driving said pump means during operation thereof, and oneway clutch means connected between said pinion and said second mechanical drive means for operating said second mechanical drive means during rotation of said pinion means in one direction and for not operating said second mechanical drive means during rotation of said pinion means in the other direction, whereby said pump means is intermittently driven for predetermined time periods in relation to the profile of said cam means.

Claim 9

Apparatus for intermittently applying deposits of adhesive at predetermined locations on a face of a moving web of material; said apparatus comprising: adhesive extruding head means comprising a generally flat plate member having a forward, straight, longitudinally-extending edge positioned adjacent and transversely across the face of the moving web, said plate member including internally thereof a plurality of interconnected channels for receiving and conveying adhesive therethrough, and a plurality of extruding port means spaced along the length of said forward edge and connected with said channel for receiving adhesive therefrom and for extruding adhesive onto the face of the moving web of material in a predetermined pattern of spaced-apart longitudinally-extending sets of lines; adhesive supply and conduit means connected with said channels of said extruding head means for containing a supply of adhesive under pressure and for conveying the adhesive to said extruding head means; selectively operable, metering pump means positioned in said adhesive conduit means for selectively pumping metered amounts of adhesive from said supply means through said conduit means to said extruding head means; and control and drive means connected with said pump means for selectively operating said pump means intermittently for predetermined time periods for timed, intermittent, metered pumping action of adhesive to said extruding head means for timed intermittent application of adhesive onto the face of the moving web of material at predetermined iNtervals to form longitudinally spaced-apart sets of lines of predetermined length at predetermined intervals, said control and drive means comprising motor means, first mechanical drive means connected with and driven by said motor means, cam means connected with said first mechanical drive means for being rotated thereby, cam follower means in engagement with said cam means for being linearly reciprocated back and forth thereby, rack and pinion gear means in which said rack means is connected with said cam follower means for reciprocating back and forth linear movement therewith and for rotating said pinion back and forth thereby, second mechanical drive means connected with said pump means for driving said pump means during operation thereof, and oneway clutch means connected between said pinion and said second mechanical drive means for operating said second mechanical drive means during rotation of said pinion means in one direction and for not operating said second mechanical drive means during rotation of said pinion means in the other direction, whereby said pump means is intermittently driven for predetermined time periods in relation to the profile of said cam means.

Claim 10

Apparatus, as set forth in claim 7, in which said apparatus further includes valve means positioned in said adhesive conduit means between said pump means and said extruding head means for being operated to allow the passage of adhesive therethrough during operation of said pump means and for closing to stop the flow of adhesive through said adhesive conduit means when said pump control and drive means is inoperable, and control means connected with said adhesive valve means and with said motor means for closing said adhesive valve means upon stopping of said motor means, said adhesive valve control means comprising electrical circuit means connected with said motor means and including a solenoid actuated, normally closed switch means which is in the closed position to complete the circuit through said circuit means during operation of said motor means and which will open to break the circuit through said circuit means upon stopping of said motor means, pressurized fluid supply and conduit means connected with said adhesive valve means for supplying fluid under pressure thereto for operating said adhesive valve means between the open and closed positions thereof, and solenoid operated two position valve means located in said fluid conduit means and connected with said electrical circuit means and being maintained in a first position thereof when the electrical circuit is completed through said circuit means by operation of said motor means to provide the flow of fluid under pressure through said fluid conduit means to said adhesive valve means for opening said adhesive valve means, and for moving to a second position thereof upon breaking of the circuit through said circuit means by stopping the operation of said motor means to provide the flow of fluid under pressure through said fluid conduit means for closing said adhesive valve means and preventing the flow of adhesive through said adhesive conduit means to prevent leaking of adhesive from said extruding head means when said apparatus is inoperative.