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Publication numberUS2533704 A
Publication typeGrant
Publication dateDec 12, 1950
Filing dateApr 2, 1949
Priority dateApr 2, 1949
Publication numberUS 2533704 A, US 2533704A, US-A-2533704, US2533704 A, US2533704A
InventorsZanetti Andrew D
Original AssigneeZanetti Andrew D
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Liquid applicator for gluing machines
US 2533704 A
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Description  (OCR text may contain errors)

Dec. 12, 1950 A. D. ZANETTI LIQUID APPLICATOR FOR GLUING MACHINES Filed A ril 2, 1949 m m w w.

' ANDREW n. ZA/VETT/ BY 1 ATTORNEY Patented Dec. 12, 195O UNITED STATES PATENT OFFICE LIQUID APPLICATOR FOR GLUING MACHINES 4 Claims.

This invention relates to improvements in gluing machines.

In manufacturing certain types of cardboard cartons or paper baskets an adhesive material is applied at timely intervals to a moving sheet preparatory to its being formed into receptacles. It is of considerable importance that the adhesive material be applied in adequate quantities and at definite intervals to the moving sheet, otherwise the subsequently formed cartons or baskets will not hold firmly together. Adhesives ordinarily flow quite slowly, and it is necessary to employ suitable pressure means to insure the delivery of an adequate amount of an adhesive to the exposed surface of a moving sheet at timely intervals.

The present invention provides a novel glue applicator which functions in synchronized relation with respect to a moving sheet so that definite amounts of an adhesive are applied to the sheet at timely intervals.

In the accompanying drawings:

Fig. 1 is a side elevation partly in sectionof a gluing machine embodying the preferred principles of my invention, showing the glue applicator in operative engagement with a sheet;

Fig. 2 is a similar view showing the relative positions of the parts of the device when the applicator is not in engagement with a sheet;

Fig. 3 is an end view of the machine; and

Fig. 4 is a sectional view taken on the line 4-4 of Fig. 1;

Referring to the drawings, a vertical wall member l is shown positioned in backing relationship with respect to a slowly moving sheet 2 to which an adhesive material such as glue is to be applied at definite intervals in accordance with certain requirements incident to the manufacture of cartons, boxes or the like.

Mounted for movement toward and away from the sheet 2 is an applicator body 3 having a longitudinal bore or chamber 4, the sides of which are formed with an annular groove 5. Secured to the body 3 is a vertical tubular member 6 which is connected to a conduit 1 leading to a source of supply for liquid glue. The central opening through the tubular member 6 communicates with the annular groove 5.

Mounted for reciprocating movement in the chamber 4 is a closely fitting tubular piston 8 having an elongated tubular extension 9 extending forwardly through an axial opening in the body 3. The rear end of the piston 8 is slotted as at Ill to provide openings communicating with glue to flow into the interior of the said piston.

Seated against an inwardly protruding flange formed at the extreme forward end of the tubular extension 9 of the piston 3 is a metal ball valve H which is urged in a forward direction by a helical compression spring [2. There is suitable clearance provided between the ball valve and the tubular extension 9 to allow glue to flow forwardly past the said ball. The forward end of the tubular extension 9 is slotted or cut away as at It to allow the liquid glue to be expelled from the tubular extension when the ball is unseated. The rear end portion of the compression spring 12 extends through a tubular extension i4 forming a part of an adjustable plunger E5. The rear end of the com& pression spring abuts the plunger l5, and the outer peripheral edges of the latter slidably engage with the side walls of the chamber 4. An end cap l6 screwed on the rear end of the body 3 encloses the chamber 4. A set screw l1 adjustably extendingthrough a threaded axial opening in the end cap It provides means for adjusting the position of the plunger 15 in the chamber thereby making it possible for the tubular extension I 4 thereof to be selectively positioned so the slotted openings In of the piston 8 are increased or decreased in size to permit a larger or smaller amount of liquid glue to flow into the interior of the piston. The forward end of the extension. I l of the plungerl5 slidably fits in the axial bore of the piston 8'.

The applicator body 3 is formed with a rigid arm l8 which is pivotally mounted between its ends as at is on a support 20. An actuating member 2 arranged for synchronized movement withv the sheet advancing mechanism (not shown) moves the applicator body toward and away from the moving sheet 2 at timely intervals.

As. the applicator body 3 is moved forwardly the ball valve. Hengages with the sheet 2 and becomes unseated, thereby allowing glue to pass through the slots l3. Directly after the unseating of the valve ll the tubular extension 9 also engages with the sheet 2 and is thereby stopped in its forward movement as the body 3 continues to move forwardly toward the said sheet. The piston 8, being rigidly secured to the tubular extension 9 also moves rearwardly in the chamber 4 as the body 3 moves forwardly. Since the tubular extension 14 of the adjustable plunger 15 is fixed to the body 3 and is carried forwardly therewith, the piston 8 changes its position with respect to said tubular extension as the body the annular groove 5, thereby allowing the liquid 55 moves forwardly, thereby causing the slotted openings to close and temporarily discontinue the flow of glue into the piston. With the closing of the said openings I0 there is a pressure applied to the glue inside the piston and the tubular extension 9 as the said piston changes its position as aforesaid in the chamber 4. The glue is thereby forced past the unseated ball valve H and out through the slots [3 in the forward end of the tubular extension 9. The ejected glue is thereupon applied to the moving sheet 2 since the ball and also the forward end of the tubular extension 9 are in contact with the sheet 2.

When the body 3 moves away from the sheet 2 the spring I2 returns the ball valve ll toward and into engagement with its seat, thereby pre-,

venting the glue from being further discharged from the tubular extension 9. The spring i2 also moves the piston 8 forwardly inside the body 3 to a position wherein the slotted openings 10 register with the annular groove 5, thereby allowing glue to be fed by gravity to the interior of the said piston.

It is to be understood that the present invention may be used to apply various liquid materials other than glue to surfaces.

What I claim is:

1. In a liquid applicator, a tubular body having a liquid inlet opening in its side, a tubular reciprocating piston mounted in the body and having a tubular extension at one end, the said extension projecting from one end of the body and having an inlet at its inner end communicating with the hollow piston and an outlet at its opposite end, the said piston having liquid inlet means at its opposite end, a valvemember p0- sitioned in the outlet of the said extension and arranged to close and open the outlet of the tubular extension, the said valve member when in its closed position being arranged to project beyond the outlet end of the tubular extension, a helical spring positioned inside the tubular extension for yieldably urging the valve member toward its closed position, an adjustable member secured within the tubular body and extending into the tubular piston, the said adjustable member being arranged to close the inlet means of the piston when the body is moved to a position wherein the valve member and the tubular member engages with a surface to which the liquid is to be applied.

2. In a liquid applicator, a tubular body having an inlet opening at its side, a tubular piston mounted for reciprocating movement in the body and having inlet means at one end in communication with the inlet opening of the body. a tubular extension carried by the piston, the said extension having an outer end projecting through an opening in an end of the body and having an inlet opening in communication with the interior of the piston, a valve member mounted in the tubular extension and arranged to normally project beyond the outer end thereof, the said valve member normally closing the outer end of the tubular extension, an adjustable member secured within the body and slidably fitting in the piston and arranged to close the inlet means thereof when the piston is in one extreme of its reciprocatory movement, and spring means interposed between the valve member and the adjustable member for closing the valve member and for returning the piston to a position wherein its inlet means is open.

3. In a liquid applicator, a hollow body having liquid inlet means, a hollow reciprocating piston mounted in the body, inlet openings in the piston for the passage of liquid from the body to the interior of the piston, a tubular extension carried by the piston, the said extension projecting through one end of the body and having a liquid discharge opening at its said projecting end and an inlet opening in its opposite end communicating with the interior of the piston, a valve member mounted in the tubular extension for normally closing the discharge opening, the said valve member being normally positioned with a portion projecting beyond the tubular extension, whereby when a pressure is applied to the valve member in a direction toward the piston it will open the discharge opening in the extension, a projecting member socured within the opposite end of the body and arranged to control the inlet openings of the piston as the piston is reciprocated, and a compression spring interposed between the valve member and the projecting member for yieldably holding the valve member in a closed position and the piston in a position wherein its inlet openings are open, the said projecting member and the piston being arranged so the inlet openings are closed when the tubular extension and the piston are moved in one direction of their reciprocatory movement.

4. In a liquid applicator, a .hollow body having an inlet opening for liquid in its side, a hollow reciprocatory piston mounted in the body and having inlet means communication with the interior of the body, the said piston having a tubular extension projecting through an end of the body, the said tubular extension having an inlet at its inner end in communication with the interior of the piston and an outlet at its outer end, a valve mounted in the tubular member and arranged with a portion thereof project ing beyond the outer end of the tubular extension, the said valve being arranged to normally close the outlet end of the tubular extension and to be displaced to an open position upon pressure being applied thereto in a direction toward the piston, a projecting member extending into the piston and arranged to close the inlet means thereof when the piston is reciprocated in one direction coincident with the valve being moved to an open position, and a helical compression spring interposed between the valve and the projecting member.

ANDREW D. ZANETTI.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,046,408 Voges Dec. 3, 1912 1,250,851 Goldner Dec. 18, 1917 1,936,906 Green Nov. 28, 1933 2,062,900 Nagy Dec. 1, 1936 2,290,363 Sirton l July 2-1, 1942 2,309,285 Wentworth Jan. 26, 1-943

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1046408 *Apr 25, 1910Dec 3, 1912Antiseptol Liquid Soap CompanyLiquid-vender.
US1250851 *May 8, 1917Dec 18, 1917Myer GoldnerPlunger-oiler for watches and clocks.
US1936906 *Jan 19, 1932Nov 28, 1933Green Harry AGlue gun
US2062900 *Sep 21, 1934Dec 1, 1936Nagy BertholdAdhesive feeder
US2290363 *Oct 14, 1940Jul 21, 1942Stirton James WDispensing device
US2309286 *Jul 26, 1939Jan 26, 1943Wentworth Pearl JosephInk applying apparatus
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2652751 *Jan 6, 1951Sep 22, 1953Remington Arms Co IncTube sizing lubricator
US2710031 *May 8, 1953Jun 7, 1955Bruce E L CoSaw marker for flooring strips
US2724364 *Jun 11, 1954Nov 22, 1955E L Bivans IncGlue applicator for box making machine
US2800871 *Feb 16, 1954Jul 30, 1957United States Steel CorpApparatus for helically striping an elongated cylindrical article
US2806443 *Jul 29, 1954Sep 17, 1957Horn Carl AApparatus for applying adhesive in spots to sheets of paper
US2811943 *Jan 19, 1954Nov 5, 1957J L Ferguson CompanyApparatus for applying adhesive to the flaps of cases or cartons
US2828553 *Dec 14, 1953Apr 1, 1958Harry J JaroszApparatus for conditioning webs
US2846214 *Jan 24, 1955Aug 5, 1958Didde Carl WSheet detector for paper gathering apparatus
US2859727 *Jul 31, 1953Nov 11, 1958Sidney R PhinGluing device for box forming machines
US2896569 *May 7, 1957Jul 28, 1959J L Ferguson CompanyApparatus for applying adhesive to the flaps of cases or cartons
US2933061 *Mar 29, 1957Apr 19, 1960Time IncCoating device
US3034476 *May 5, 1958May 15, 1962Didde Carl WApparatus for applying adhesive to sheet material
US3088433 *Feb 16, 1960May 7, 1963Emhart Mfg CoGluing mechanism for a carton closing machine
US3302365 *Sep 23, 1963Feb 7, 1967Viking CorpPackaging machine and method
US3750503 *May 4, 1971Aug 7, 1973Mcmillan JMethod and means of gang saw lubrication and cooling
US4301698 *Jun 18, 1980Nov 24, 1981Intrama S.A.Device for depositing a pasty substance on a surface automatically and automatic machine therefor
US4803124 *Aug 14, 1987Feb 7, 1989Alphasem CorporationBonding semiconductor chips to a mounting surface utilizing adhesive applied in starfish patterns
US5752358 *Jan 7, 1997May 19, 1998Chadwick Engineering LimitedStretch wrap dispenser head with coating applicator
DE926340C *Jan 17, 1952Apr 14, 1955Prakma Maschinenfabrik G M B HMaschine zum Herstellen von Schuppenformularsaetzen
DE1062617B *Oct 9, 1957Jul 30, 1959Hesser Ag MaschfVorrichtung zum Auftragen von Leim bei Verpackungen
DE1063447B *Apr 4, 1957Aug 13, 1959Nackenheim Ver KapselfabVerfahren und Vorrichtung zum unterbrochenen Auftragen eines zum Fadenspinnen neigenden Klebstoffes
DE1108057B *Dec 13, 1957May 31, 1961Willy HesselmannVerfahren und Vorrichtung zum Auftragen fluessiger oder pasteuser Substanzen, z. B. Klebstoff, auf endliche oder endlose Stoffbahnen, z. B. Papier
Classifications
U.S. Classification118/711, 53/383.1, 118/410, 493/336
International ClassificationB05C1/02
Cooperative ClassificationB05C1/02
European ClassificationB05C1/02