US1257962A - Coating-machine. - Google Patents

Description

E. ARIVHTAGE.

=C'OATING MACHINE. APPLICATION FILED SEPT. 10. 1 9117.

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E. ARMITAGE. COATING MACHINE.

APPLICATION FILED SEPT-M1917.

Patented Mar. 5,1918.

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E. ARMITAGE.

COATING MACHINE.

APPLICATION mm SEPT. 10. 19:1.

Patented Man 5,1918.

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E. ABIVHTAGE.

CIOATINIG MACHINE.

APPLICATION FILED SEPT. 10. I917.

Patented Mar. 5, 1918.

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CI 01142 up EDWIN ARMITAGJE, F DETROIT, MICHIGAN.

GOATING-MACHINE menace.

Specification of Letters Patent.

Patented nan a. mi

Application filed September 10, 1917. Serial No. 190,t55.

v To all whom it may concern:

this improved coating machine.

Be it known that T, EDWIN ARMITAGE, a citizen of the United States, and residing at Detroit, in the county of Wayne and State of Michigan, have invented a new and Improved Coating Machine, of which the following is a specification.

This invention relates to mechanism for coating sheets or bands of cloth, paper or other fabrics with a surfacing compound embodying a volatile solvent or vehicle, and its object is to provide a machine of this kind which will spread a surfacing coat of even thickness over an indeterminate length of fabric and dry this coating before the fabric leaves the machine.

This invention consists in combination of the supporting frame and the rollers to feed the fabric through the machine, of a large heating drum around which the coated fabric passes so that the volatile materials in the coating compound may be evaporated.

It also consists in providing an endless, heavy, supporting belt for the fabric as it is being coated and a pair of guide rollers to laterally position the belt.

It further consists in a flat knife or spreader mounted on .a vertically movable horizontal shaft together with means for turning the shaft, the knife being formed with horizontal slots to receive the fastening devices for end pieces or guard-plates which prevent the coating compound from running out over the edges of the fabric, the guardplates being adjustable longitudinally of the slots to provide for fabrics of difi'erent widths.

It further consists in the details of construction illustrated in the accompanying drawings and. particularly pointed out in the claims.

In the drawings, Figure 1 is a plan of Fig. 2 is a side elevation thereof. Fig. 3 is an elevation of the operating end of the machine. Fig. 4 is a section 0 one end of a cooling roller. Fig. 5 is a section of a journal of the heatin drum. Fig. 6 is a plan of the support 0 one end of the spreader. Fig. 7 is a side elevation and Fig. 8 a rear elevation of a connection between a guard-plate and the spreader.

Similar reference characters refer to like parts throughout the several views.

This machine may be used singly to give the fabric one coat, or a series of these machines may be employed to apply a number ofcoats of proper materials to a sheet or band of fabric. The pedestals 1 and 2 support the side frames 3 and 4 which are properly positioned by means of the bolts 5 and tubular spacers 6. The pedestal 1 carries bearings for the idler roller 7 and the frames 3 and .4 carry bearings for the idler rollers 8, 9, 10 and 11, bearings 12 for the heating drum 13, and bearings 14: for the journals of the stationary roller 15 around which passes-the heavy supporting belt 16. These frames 3 and 4 carry screws 17 having hand-wheels 18 at their outer ends, which screws engage in nuts 19 on the slidable bearings 20 for the journals of the movable roller 21 for the belt 16. After the belt has been roperly tensioned by means of the screws 1 the bearings 20 may be secured in position by the bolts 22.

The countershaft 24 may be driven in any desired manner. It carries a pinion 25 which meshes with the bevel gear 26 on the shaft 27. A pulley 28 on this shaft connects to the pulley 29 on the shaft 30 of the 31. A gear 32 on the shaft 27 meshes with a gear 33 on a small shaft 34: which alsocarries a pinion 35 that meshes with the teeth 36 on the end of the heating drum 13. The proportions of the pulleys 28 and 29, roller 15, and gears 32, 33 and 35 are such that the surface speed of the drum 13 will not be less than that of the belt 16, and very little, if any, greater. Any driving mechanism may be employed so long as the proper proporstationary belt roller '15 by means of a belt than wide. to prevent the p down around the roller 11 and out of the machine. If another machine of similar construction is to apply another coat to the fabric, a second pedestal 38 will be provided with an idler roller 39, as shown in Fig. 2.

The coating material is applied to the fabric substantially midway between the belt rollers 15 and 20 where the fabric is supported by the belt 16, which is preferably either of rubber or leather and is pref erably about one half inch thick. The inclined scraper knife 41 is mounted on a horizontal shaft 42 journaled in the blocks 43 which are slidable on the uprights 45. Each of the blocks has a nut to receive an upright screw 47 provided with a bevel gear 48 at its upper end. In order to make sure that the supporting belt 16 will have no lateral movement at the point where the coating is applied to the fabric, a pair of frames 80 may be mounted on the side frames 3 and 4 to carry the shafts 81 of the vertical guide rollers 82 which en age the edges of the belt 16. A shaft 49 1s journaled in the uprights 45 and has gears 50 near its ends to mesh with the gears 48 in the screws. This shaft and the screws may be turned by the hand wheel 52 to move theshaft 42 and the scraper knife up and down. If desired, set screws 54 may be provided to lock the blocks 43 in desired position. The right hand block 43 has lugs 55 that constitute bearings for the worm shaft 56 having a hand wheel 57 on one end and carrying the worm 58 that meshes with the worm wheel 59 on the shaft 42.

To modify the angle between the scraper knife and the fabric in order to vary the effect upon the coating, the shaft 42 may be turned by means of the hand wheel 57 and may be raised and lowered by means of the hand wheel 52. By means of these adjustments, the angle and the distance between the scraper and the fabric may be varied indefinitely.

-The guard-plates 60 and 61 which confine the coatlng material and prevent it from flowing out laterally are adjustably mounted on the scraper 41 which has slots 62 into which the In s 63 on these plates may extend, t e lugs being onger ing and the nuts-64 and washers 65 holding the plates in position.

Fig. 4 shows how water may be forced into the roller 10 through a pi e 67 which extends into a journal 68 0 this roller. A gland 69 presses the packing 70 so tightly around the pipe as to prevent leakage. In

Fig. 5, the head 70 of the drum 13 is shown formed with a trunnion 71 and a gland 72 to press the packing 73 around the pipe 74 uardates from turnthrough which steam or hot water or other heating element is conducted to this drum. Similar constructions of the opposite ends of this roller and drum permit the escape of the cooling and heating fluids respectively.

Because of the fact that the knife 41 is positioned substantially midway between the rollers 15 and 21, and that the belt 16 will yield downwardly under unusual pressures, an irregularity in the thickness of the fabri being coated will not cause serious trouble. Where there is no possibility of the fabric moving down, a knot or other imperfection on the surface of the fabric may catch the scraper knife and cause the fabric to tear across.

The various details and proportions of construction of this machine may all be varied without departing from the spirit of my invention as set forth in the following claims.

I claim 1. In a coating machine, the combination of an endless belt for supporting a band of fabric passing through the machine and means to move the fabric, a scraper knife positioned above thefabric to control the thickness of the coating being placed thereon, a horizontal shaft to support the scraper knife, bearings for the ends of said shaft, a worm wheel connected to said shaft and a worm mounted on one of the bearings adj acent to said wheel, whereby said shaft may be turned to swing the scraper knife toward and from the fabric.

2. In a coating machine, the combination of a pair of rollers, an endless belt mounted on the rollers to support a fabric as it is being coated, means to drive said belt, a

scraper knife to control the thickness of the cOating being applied, said knife being positioned over the belt between the rollers, and guard-plates adjustably mounted on the scraper knife.

3. In a coating machine the combination of a pair of rollers, an endless belt mounted on the rollers to support a fabric as it is being coated, means to drive. said belt, a scraper knife to control the thickness of the coating and formed with horizontal slots, and uard-plates having projections extendin t rough said slots and thereby adjustab y mounted on said scraper knife, said knife and guard-plates being positioned over the belt between the rollers,

4. In a coating machine, the combination of a pair of. rollers, an endless belt mounted r arr nea 5. In a coa r h w e, the combination 5 of a pair of rollers, an endless belt mount-e61 on the rollers to support a fabric as it is being coated, me to drive said belt and therehy more saidl fabric on h the machine, a scraper mi 1 to eontro the thickness of the coating, saidl ite being posire tioned over the belt between the rollers, and means acting parallel to the travel of the material on the belt for tensioning said belt to control the upward pressure thereof and of the fabric thereon against said scraper 15 knife.

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