US1874166A - Apparatus for printing - Google Patents

Description

g- 30, 1932- w. P. BRINTON v 1,874,166

APPARATUS FOR PRINTING Filed May 7, 1950 2 Sheets-Sheet l Aug. 30, 1932. w BRlNTON 1,874,166

APPARATUS FOR PRINTING 2 Sheets-Sh et 2 Filed May 7, 1950 INVENTOR a N ma,

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Patented Aug. 30, 1932 warren stars ems? @FFEQE Y WILLIAM PENN BRINTON, 0F LANCASTER, PENNSYLVANIA, ASSIGNOB TO ARMSTRONG CORK COMPANY, LANCASTER, PENNSYLVANIA, CORPGRATION 0F EENNSYL-" VANIA AI PPARATUS FOR PRINTING Application filed May '7, 1930. Serial No..450,434.

This invention relates to apparatus for printing and is herein particularly described as applied to the manufacture of printed floor coverings.

In the printing of floor coverings by thewell-known block-printing machine, the printing medium employed is a fluid paint which is supplied to blocks on the printing heads by means of a roll lying in a paint trough or color box, which color box is moved back and forth under the printing head between the downward printing movements thereof.

It is frequently desirable, where certain patterns are being printed, to provide on a single printing head a number of relatively movable printing blocks, which blocks may be separately employed for printing different parts of the design. Also, in certain cases it may be desirable to print with two or more of the blocks together at one point of the design and to move one or more of such blocks to a non-printing position at another part of the design. A mechanism for doing this is described and claimed in lPatent No. 1,737,817 to Harry A. Webster, dated December 3, 1929.

When using sectional blocks difficulty is some times encountered in that on occasion a line of demarcation between the various printing areas, as determined by difierent block sections, is noticeable. This is objectionable because it allows the base material to show through in a distinct line which some times runs the entire length of the pattern. This is so because it is generally necessary to space the blocks apart slightly to permit reciprocation thereof independently of one another.

I have found that this difliculty can be ditions, leaving concentrated bodies of paint tween it and the material, despite whichfact it is possible to obtain the desired amount of brushmg. in other cases it is important that the brush always be in motion relative to the material, and this invention is the subject matter of the copending application of Fred Ct, Rottmund, Serial No. 442,140, filed April 7, 1930.

For the purposes of the present invention I. have found that the brush or brushes employed may very well be carried by the color box- Preferably the brush is adjustably mounted on such color box so that the degree of pressure with which it bears on the material may be closely adjusted. Despite the fact that the color box moves back and forth,

it is possible, by properly adjusting the brush,.to prevent thebri'stles thereof from snapping from one angular-position to a reverse position and depositing pools of paint on the material. A v

In the accompanying drawings, illustrating the present preferred embodiment of invention,

Figure 1 is a partial side elevation of a block printing machine showing two heads thereon and one color box with carrying brushes; V

Figure 2 is a diagrammatic view illustrating sectional blocks such as may be employed on the printing heads of Figure 1; I

Figure 3 is a top plan view of one of the color boxes having brushes applied thereto; Figure 4 is a side elevation of one of the brushes; and Y Figure 5 is a front elevation thereof. The block printing machine illustrated in Figure 1 comprises a bed 2 over which the sectional blocks as described in said Webster patent above referred to. The heads are re ciprocated by cams 7 whereby the printlng blocks, indicated in Figure 2 as 8a to 8f in clusive, are moved up and down to receive paint and print on the material going through the machine.

As described in I atent1,737,817, above referred to, the sectional block actuating mechanism is such. as to lower desired sections into paint receiving and printing position. As shown in Figure 2, a slight clearance is allowed between the blocks so as to permit of this movement. 1

Color boxes 9 of the usual type are employed, the several colorboxes being connected' by links 10 so. that they may all be reciprocated in the usual fashion. The color box9 runs on fiangedwheels 11 having gear teeth 12 operating in racks 13 on the bed 2. As the color box is reciprocatedthe paint roll 14 is turned through gearing 15 making operative connection with the rack 13, so that a film of paint is laid over the printing surface of such blocks as are in lowered position when the color box printing head.

When the head 6 is lowered to printon the material, two adjacent blocks, 'for ex ample, the blocks 80 and 8d, may be in printingposition. They will apply the paint tothe material but by reason of the clearance,

shown in Figure 2, there will bea clear lineof division between the two printed areas. The, two areas are merged orblended by means of brushes 16 carried on the color box 9., Each brush is secured by a bolt '17 to a bracket 18 whereby the vertical position of the brush may be adjusted. It will be understood that the paint employed is fluid in character and may therefore be blended together without the application of marked pressure by'the brushes. It is preferred that the brushes touch the paint very lightly, thus insuring that the bristles will extend substantially perpendicularly at all times.

This eliminates any tendency to brush away 7 the paint and collect it into pools.

The invention has been specifically described as applied to the manufacture of floor coverings by a block printing machine where in sectional heads are employed. It will be understood, however, that the invention in .its broader aspects is not thus limited, but

may be otherwise embodied or practiced within the scope of the following claims.

I claim: I

1. In combination with a block printing .machinehaving a movable paint carriage, a

passes under its I brush attached to the paint carriage and adapted to engage the printed surface of the material. V

2. In combination with a block printing machine having a movable paint carriage, a brush attached to the paint carriage and adapted to engage theprinted surface of the material, the brush being adjustable.

3. In combination with a printing machine, means forprinting over adjacent areas lying side by side and means effective only along the line of junction for brushing the printed areas so as to join the same.

4. In combination with a printing machine, means for supplying a wet paint or V the like to ad'j'acent areas, and means effectivealong the line of junction only for brush ing the wet surface so: as to join the areas.

In testimony whereof I havehereunto set my hand. i 7

WILLIAM PENN'BRINTON-

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