US2762072A

US2762072A - Roller applicator for adhesive

Info

Publication number: US2762072A
Application number: US322050A
Authority: US
Inventors: Madalinski Eugene
Original assignee: LE MADDEN CORP
Current assignee: LE MADDEN Corp
Priority date: 1952-11-22
Filing date: 1952-11-22
Publication date: 1956-09-11
Anticipated expiration: 1973-09-11

Description

P 1956 E. MADALINSKI 2,762,072

ROLLER APPLICATOR FOR ADHESIVE Filed Nov. 22, 1952 6 gezze 7/[ @269 75 United States Patent O ROLLER APPLICATOR FOR ADHESIVE Eugene Madalinski, Chicago, 11]., assignor to Le Madden My invention relates generally to roller applicators for liquid adhesives and more particularly to an arrangement for preventing sticking of the adhesive applying roller during protracted periods of non-use.

Adhesive spreaders employing a reservoir or magazine for supplying adhesive to an applying roller have heretofore been open to the objection that the roller becomes stuck by dried films of adhesive forming between the sides of the roller and the jaws supporting the roller.

I have found that if the sides of the roller are kept supplied with a film of a suitable liquid preventing the formation of a dried film of adhesive, the applying roller will turn readily even after long periods of non-use. In carrying out the invention I provide a reservoir on each side of the applying roller and connect the reservoir to a pad of absorbent material contacting the side of the roller, so that the pad will cause a film of oil or other suitable liquid to come into contact with the sides of the roller. In a preferred aspect of the invention the pads of absorbent material are held in position by members which also serve to meter a proper thickness of adhesive material along the serrated cylindrical surface of the roller.

It is a principal object of the invention, therefore, to provide an improved liquid adhesive applicator characterized by a novel construction for preventing sticking of the roller after periods of non-use.

Other objects and important features of my invention will become apparent from a study of the following specification taken with the drawing which together show a preferred embodiment of the invention and what is now considered to be the best mode of practicing the principles thereof. Other embodiments may be suggested to those having the benefit of the teachings herein and I therefore intend that the scope of the invention not be limited by the precise embodiment herein shown, and only by the scope of the claim subjoined.

In the drawing:

Fig. 1 is a perspective view showing an adhesive applicator having embodied therein the improvements according to my invention;

Fig. 2 is a substantially full scale fragmentary front elevation view thereof, certain parts being shown in longitudinal cross section;

Fig. 3 is a top view thereof;

Fig. 4 is a side elevation view thereof;

Fig. 5 is a longitudinal sectional view taken along the line 5-5 of Fig. 4, to a larger scale than that shown in Fig. 4;

Fig. 6 is a sectional view taken along the line 6-6 of Fig. 5 looking in the direction of the arrows;

Fig. 7 is a sectional view taken along the line 77 of Fig. 4 but to the same scale as that shown in Fig. 6; and

Fig. 8 is a view taken substantially along the line 8-8 of Fig. 2 and looking in the direction of the arrows.

Referring now particularly to Fig. 1 of the drawing, my improved adhesive applicator is referred to generally by the reference numeral 10 and comprises a generally cylindrical tube 11 having threaded thereto an end closure 12 and an adhesive applying structure referred'to generally by the reference numeral 13 and also threaded to the tube 12. The structure 13 and the end closure 12 thus define a reservoir for a supply of liquid adhesive which is metered to an applying roller 14 mounted in the structure 13. The roller 14 is thus adapted to roll a film 16 of the adhesive on to any desired surface 17.

Referring now to the remaining figures of the drawing, the structure 13 is generally of a frustro-conical shape and has a cylindrical flange 18 which is threaded at 19 to the cylindrical tube 11. The structure 13 is milled with a slot 15 to provide a pair of spaced jaws 21 and is bored at 22 to receive a pin 23 supporting the applying roller 14 which is serrated in the manner shown as at 16.

The structure 13 is bored at 24 along the axis thereof and connects with a rectangular shaped passage 26 intersecting the milled slot 15. It will be seen that the supply of liquid adhesive is brought against the roller 16 upon inverting of the dispenser 10. The juncture of passage 26 with the milled slot 15 provides shoulders 27 spaced a slight distance from the periphery of the wheel 14 so as to regulate in part the amount of adhesive carried thereby as it rotates upon the pin 23.

The pin 23 is held in proper position in the jaws 21 by socket heat set screws 28, one of said set screws 28 being provided in each jaw. In practice, the distance between the jaws 21 and the thickness of the wheel 14 are so related that a minimum clearance is alforded consistent with freedom of turning of the wheel, so that any escape of liquid adhesive along the sides of the wheel 14 and between the jaws 21 is held to a minimum.

In order to provide proper alignment for the roller 14 within the jaws 21 so that free turning is had, the pin 23 supporting the roller 14 is aligned by adjusting the pressure exerted by the set screws 23.

I provide means for applying a thin film of a suitable liquid for breaking the bond between the jaws 21 and the sides of the roller 14 caused by the presence of an unwanted dried film of adhesive therebetween and formed during periods of non-use. To this end, the inner faces of each jaw 21 is provided with a slotted recess 29 for a pad of absorbent material 31 contacting the side of the roller 14. The pad 31 is kept supplied with a suitable fluid breaking the aforesaid bond by means of a reservoir 32 disposed on each side of the pin 23 and in the jaw 21. The reservoir 32 is closed by a screw plug 33 which may be of the socket head type.

In the usual case, each reservoir 32 is kept supplied with a light hydrocarbon oil which has been found suitable to break the bond of the adhesive material.

I also provide means for holding the absorbent pads 31 in position against endwise movement in their recesses 29. The base of the milled slot 15 accordingly forms a support for keeper members 34 provided with slots 36 to receive screws 37 tapped into the base of the slot 15. The keeper members 34 may be adjusted in their position with respect to the periphery of the serrated roller 14 effectively to meter the thickness of the adhesive film carried thereby, at the same time preventing shifting of the absorbent pad 31 in its recess 29.

While the invention has been described in terms of a preferred embodiment thereof, I do not intend that the scope be limited by the within embodiment nor otherwise than by the terms of the claim here appended.

I claim:

An applicator for liquid adhesives comprising a supply chamber, a pair of spaced jaws supporting an adhesive applying roller having a portion of its periphery adapted to be in contact with adhesive held in said supply chamber, means for preventing sticking of said roller occasioned by Patented Sept. 11, 1956 the unwanted presence of a film of adhesive between the sides of said roller and said jaws comprising a pad of absorbent material held in each jaw and contacting a side of said roller, a reservoir disposed in each jaw for a supply of a liquid capable of proyiding a .filrn of such liquidbetween said roller and said jaws to prevent the presence of such of said adhesive, each of said reservoirs being in communication with its adjacent pad of absorbent material so that .said absorbent material will maintain a film of such last named liquid against the side of said roller, and keeper members disposed between said jaws and spaced from the periphery of said roller, said keeper members being adjustable in position according to the desired thickness of adhesive along the periphery of said pads of absorbent material in position in said jaws.

References Cited in the file of this patent I UNITED STATES PATENTS 267,000 Kennedy Nov. 7,1882 555,763 Fessenden Mar. 3, 1896 r 1,212,440 Becker Jan. 16, 1917 2,176,418 Daley Oct; 17., 1939 2,581,848 Ettl Jan. 8, 1952 2,613,382 Patterson Oct. 14, 1952 FOREIGN PATENTS 456,927 Germany Mar. 6,1928