String type adhesive dispensing system
AssigneeH. B. Fuller Company
InventorsVictor H. Clausen, Charles E. Asbury, Jr.
Life of this patent
Estimating the term…
Abstract
Apparatus for dispensing a plurality of string members, in particular thread or filaments coated with hot melt adhesives, to a machine wherein the string members are applied to a moving web. The apparatus includes a device for simultaneously regulating the tension on each of the string members. In the preferred embodiment, the tension regulating device includes a pair of cylindrical rollers disposed transverse to the direction of string member travel and about which the string members are wrapped. A braking mechanism is included to provide controlled resistance to the rotation of the cylindrical rollers and thereby regulate the tension on the string members.
Claims21
Apparatus for dispensing a plurality of string members from associated supply spools to a machine wherein string members are applied to a moving web, said machine acting to pull or draw the string members from said dispensing apparatus, comprising:
- (a) a dispensing rack on which may be mounted a plurality of supply spools of string members;
- (b) means on said dispensing rack for applying drag on the string members in resistance to pull on said string members by said machine;
- (c) means for simultaneously regulating the tension on each of said string members, said regulating means disposed on said dispensing rack to receive said string members from said drag means;
- (d) guide means connected to said machine for guiding said string members from said tension regulating means to the moving web;
- and
- (e) means on said dispensing rack for guiding said string members from said supply spool to said drag means.
Apparatus for dispensing a plurality of string members from supply spools to a machine wherein the string members are applied to a moving web, said machine acting to pull the string members from said dispensing apparatus, comprising:
- (a) a dispensing rack on which may be mounted a plurality of supply spools of string;
- (b) a string tension device connected to said dispensing rack and through which said string members are threaded from said dispensing rack, said tension device comprising:
- (i) a housing having oppositely disposed sides each with a plurality of aligned spaced apertures to guide said string members into and out of said housing;
- (ii) means disposed within said housing for adjustably regulating the tension on said string members and maintaining the tension on each of said string members equal;
- (c) means connected to said machine for guiding said string members from said tension device to said machine.
Apparatus for dispensing a plurality of string members from associated supply spools to a machine wherein the string members are applied to a moving web, said machine acting to pull the string members from said dispensing apparatus, comprising:
- (a) a dispensing rack on which may be mounted a plurality of supply spools;
- (b) means connected to said rack and to the machine for guiding said string members from said spools to the moving web;
- and
- (c) means mounted on said rack and interposed in the path of said string members from said supply spools to said machine for regulating the tension on said string members and maintaining equal tension on each of said string members, said tension regulating means comprising:
- (i) first and second roller members rotatably mounted to said rack, said roller members having substantially horizontally disposed rotational axes transverse to the path of said string members, said rotational axes vertically offset with respect to each other and said string members wrapped about said first and said second roller members;
- (ii) means for providing adjustable resistance to the rotation of said rollers to thereby regulate tension on said string members.
In an apparatus wherein a plurlity of strings are pulled from supply spools, apparatus for maintaining tension equally distributed over said strings and adjusting the tension on said strings, comprising:
- (a) a housing having oppositely disposed first and second end walls, each end wall having a plurality of apertures therein, said housing also having a pair of oppositely disposed side walls;
- (b) roller means rotatably mounted to said side walls and having a rotational axis disposed generally transverse to the path of said string through said apparatus for frictionally engaging said string members to resist the pull of said string members and thereby apply tension to said string members, said string members being threaded through the apertures in said first wall, wrapped about said roller means, and threaded through the apertures in said second end wall;
- (c) brake means for providing controlled adjustable resistance to the rotation of said roller means.
Dependencies are inferred from the claim text.