US2684047A - Shingle painting and a machine therefor - Google Patents

Description

y 1954 M. M. WALKER SHINGLE PAINTING AND A MACHINE THEREFOR Filed May 11, 1953 INVENTOR MAURICE M. WALKER A TTORNE Y Patented July 20, 1954 SHINGLE PAINTING AND A MACHINE- THEREFOR Maurice M. Walker, South Burnaby, British Columbia, Canada Application May 11, 1953, Serial No. 354,125

or. 118-421) v 6 Claims. 1

My invention relates to improvements in shingle painting and a machine therefor.

The demand for shingles having a grooved or striated weather surface which are painted before delivery to the job has made it necessary to develop means and a method of applying the paint to the shingle in sufficient quantity to properly coat the entire grooved surface without waste of paint or applying more than enough to cause the paint to be tacky and require too long a drying time.

The present machine is designed to accomplish these desirable objects and also to provide means whereby the quantity of paint to be applied can be varied to suit the various types of shingle or other short length material to be painted. A still further object is to provide that the weather side of the shingle will pass through the machine face upwards, so that adequate inspection can be made and defects, if any, can be run through the machine a second time without delay, for correction.

Referring to the accompanying drawings:

Figure l is a longitudinal sectional View of the preferred modification of the invention.

Figure 2 is a diagrammatic view showing the manner in which a desired amount of paint is picked up by the work piece.

Figure 3 is a longitudinal sectional view of a modification.

In the drawings like characters of reference indicate corresponding parts in each figure.

The numeral 5, see Figure 1, indicates a base having supports 2 upon which longitudinal frame members 3 are mounted. A bed generally indicated by the numeral 5 having a feed section 1 and a delivery section 3 is mounted upon the frame members 3. Mounted in suitable bearings, not shown, are two vertically disposed pairs of suitably driven rolls respectively indicated by the numerals 9 and It which are spaced apart. All the rolls are provided with a metal core it having an outer shell or sleeve 52 of resilient Ina-- terial such as rubber, plastic or other non-absorbent material capable of gripping and conveying shingles or other short articles having a variation in thickness between their ends. All the rolls 9 and it may be of identical diameter, but it is preferable that the lower roll it should be slightly less in diameter than the others or that it should be driven at a slightly lower speed so that a shingle passing between the rolls it should be urged downwardly into firm contact with the adjacent edge of the delivery section 8.

The upper rolls 9 and Ill are operatively connected by an endless belt it which is preferably carpet or other material having a pile outer surface and capable of carrying suificient paint. The bight of the pairs of rolls is in alignment with the delivery section 8 of the bed 5 and interposed in the interspace between the pairs of 2 rolls is a flap l6 hingedly mounted upon a transverse shaft I'l adjacent the rolls 9. The free end of the flap I6 is adjusted as to elevation by means of a vertical screw l 9 fitted at its lower end with a hand wheel 20. Suitably supported above the feed section 1 of the bed 5 is a transverse brush 22 which is adapted to sweep the upper face or" the work pieces as they are fed into the bight of,

the roll 9. The discharge section 6 of the bed is provided adjacent the rolls [6 with a slot 23 through which a transversely mounted inverted brush 24 is adapted to extend to a point slightly above said section. A second brush 25 is mounted with its bristles 26 extending downwardly and slightly in the direction of the feed along the bed to engage the upper surface of shingles or other work pieces travelling along the bed.

One or more heating plates 23 of any desired type are mounted in close proximity to the belt 15 to heat it and the paint being carried thereby.

A paint vat 29 is mounted under the lower roll Ill in which paint is adapted to be fed to a suitable level so that as said roll is turned in the direction of the arrow shown thereon paint will be carried up to the bight between said rolls. In Figure 2 a shingle is shown contacting the lower roll [3 slightly below the bight between the lower and upper rolls, where it will intersect the usual accumulated paint body carried up by the rotation of the roll. That portion of the paint which is marked X is separated from the paint below and is spread by the belt I5 on the upper face of the shingle and is pressed downwardly into the grooved surface by the pile of the belt as the shingle passes outwardly to discharge over the delivery section 8. If a heavy volume of paint is desired to be applied the flap i6 is lowered to pick up a greater amount of the paint accumulated at the bight of the rolls It.

In the modification shown in Figure 3, the machine is made of shorter length than that above described, one pair of vertically disposed driven rolls 40 consisting of lower and upper rolls each having a resilient covering. Mounted parallel to and above the rolls 40 is an idler ii and an endless belt 42 extends around the upper r011 til and the idler 41. The belt 42 extends past pairs of heating plates 43. A feed section 44 and a delivery section 45 are provided respectively in front of and behind the rolls 41), the feed section being preferably slightly below the bight between said rolls and the delivery section being level therewith. A hinged flap it is provided adjacent the feed section, which flap extends into close proximity with the lower roll 48 and is adjustable vertically by means of a screw t! to dispose its free end at a desired height level with or below the bight between the rolls to to meter the paint delivered onto the upper surface of a work piece passing between said rolls.

' A presser foot 50 consisting of a frame 5! having 3 a transverse member 52 is hinged from a pair of spaced standards 54, one only shown. The presser foot is urged into contact with the hinged flap 45 by a spring 55. A pair of brushes 55 extend transversely of the delivery section 45 and are angularly disposed to each other in order to facilitate the entry of a work piece between them.

In the modification of Figure 3 the lower roll lll is preferably driven at a slightly less peripheral speed than the upper roll to urge the lead ing edge of the work piece downwardly onto the delivery section 45.

The operation of the machine shown in Figure 1 is as follows: The flap i6 is adjusted as to elevation of its free end to cause the shingle tip to pick up upon its upper surface the desired amount of paint. The shingle in passing between the rolls is engaged on its upper or grooved surface with the carpet belt !5, the pile oi which forces the paint down into the base of the grooves and evenly disperses the paint over its entire surface. The lower surface is also obi iously covered with paint but this coating while sufficient may not be as perfect as that applied to the upper surface owing to irregular indentation due to saw marks. As the shingle passes between the brushes 2d and 25 any particles of wood which may have adhered to the surfaces will be dislodged from the surfaces and the paint will be brushed to give the desired finish thereto. Subsequent shingles being fed through the machine will first the brush 22 then be fed through the rolls 9, coming into contact with the belt where an initial coat of paint will be applied to the upper surface and will be carried by said belt and the rolls 9 through the point of paint pick up and into the bight of the rolls iii.

If the paint being used is of relatively slow drying characteristic, heat will be applied to the belt 15 by the heating elements 28, so as to warm it and produce evaporation of volatiles therein, so that the initial paint application by the rolls 9 will be slightly tacky and will assist the paint picked up from the lower roll it in drying when applied to the shingle.

In the modification shown in Figure 3 all the painting is done by one pair of rolls e. g. the rolls 25, in one operation and the paint exposed to drying action in the belt is combined with the paint picked up and applied at the same moment.

It is conceivable that the hinged flap shown in the preferred modification of the invention may be dispensed with and the paint applying rolls be made vertically adjustable to dispose their bight the required distance above the plane of the bed. For this purpose a vertical screw 50 would be mounted beneath the bearings which journal the rolls it.

What I claim as my invention is:

1. A machine for painting shingles and the like comprising a pair of vertically disposed rolls, a bed substantially aligned with the bight formed between the pair of rolls, said bed having a discharge section on one side of the rolls, a substantially horizontal member at the opposite side of said rolls upon which shingles are adapted to be fed into the bight of said rolls, means for applying paint to one of the rolls, an endless belt trained around the upper of said rolls, said belt being substantially longer than the periphery of said roll, means for supporting the belt in extended position, and means for adjusting the substantally horizontal member relatively to the level of the bight of the rolls.

2. A machine for painting shingles and the like comprising a pair of vertically disposed rolls, a bed substantially aligned with the bight formed between the pair of rolls, said bed having a discharge section on one side of the rolls, a substantially horizontal member at the opposite side of said rolls upon which shingles are adapted to be fed into the bight of said rolls, means for applying paint to one of the rolls, an edless belt trained around the upper of said rolls, said belt being substantlaly longer than the periphery of the said roll, means for supporting the belt in extended position, means for adjusting the substantially horizontal member relatively to the level of the bight of the rollers, and means for heating the belt.

3. A machine for painting shingles and the like comprising two pairs of vertically disposed rolls arranged in spaced relation, one pair of rolls serving to feed shingles to be painted and the other pair serving to apply paint to said shingles, a bed extending in substantial alignment with the bight of each pair of rolls, and endless belt surrounding the upper roll of each of said pairs, a paint tank disposed under the lower of the paint applying rolls to supply paint thereto, means for guiding a shingle from the feed rolls to the paint applying rolls, and means for adjustably varying the elevation at which said shingle is brought into contact with the lower of said paint applying rolls.

l. A machine for painting shingles and the like comprising two pairs of vertically disposed rolls arranged in spaced relation, one pair of rolls serving to feed shingles to be painted and the other pair serving to apply paint to said shingles, a bed extending in substantial alignment with the bight of each pair of rolls, and endless belt surrounding the upper roll of each of said pairs, a paint tank disposed under the lower of the paint applying rolls to supply paint thereto, means for guiding a shingle from the feed rolls to the paint applying rolls, means for adjustably varying the elevation at which said shingle is brought into contact with the lower of said paint applying rolls, and means for heating the belt.

5. A machine for painting shingles and the like comprising two pairs of vertically disposed rolls arranged in spaced relation, one pair of rolls serving to feed shingles to be painted and the other pair serving to apply paint to said shingles, a bed extending in substantial alignment with the bight of each pair of rolls, an endless belt surrounding the upper roll of each of said pairs, a paint tank disposed under the lower of the paint applying rolls to supply paint thereto, a hinged fiap mounted between the pairs of rolls substantially aligned with the bed, the free end of said flap being adjacent to the paint applying rolls, and means for adjusting the elevation of the free end of said flap.

6. A machine for painting shingles and the like as claimed in claim 3, and a pair of brushes extending transversely of the bed beyond the paint applying rolls to engage the upper and lower faces of the shingle.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 677,343 Delaney July 2, 1901 778,709 Robertson Dec. 27, 1904 1,325,110 Robinson Dec. 16, 1919 1,345,719 Vavra July 6', 1920 1,693,172 Bergstein Nov. 27, 1928 2,354,777 Schwartz Aug. 1, 1944

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