US1592206A - Method of coating wire fabric - Google Patents

Description

July 13 1926. 1,592,206

- N. s. HARTER METHOD 0F'` COATING WIRE FABRIC Filed Sept. 29, 1923 2 Sheets-Sheet 1 July 13,1926.

1,592,206 N. s. HAR'rx-:R METHOD o-FfcoATING WIRE FABRIC C 4 Filed sept. 29, 1925 sheets-shea 2- Y necting them. l

, 'Patented "Jilf'y 13.1926'.

` UNITED "PATENT- OFFICE.

Nona s. marsa or' WAUKEGAN, ILLINoIs, Assmann?. ro cYcLoNn FENCE con# ILLINOIS, A conromTIoNor ILLINOIS.

PANY, or WAIIKEGAN,

Martien 'or comme wmE'ra-Bnrc.

Application f ledfSptember 29, 1923. ASerial-No.y 666,606.

This vinvention relates to'.` a. method of V'coating wire fabric. A y

One of the 'objects of the invention is to improve means 'and mode of Vprocedure to uniformly and to. 'smoothly coat wire fence l fabric in'which transversely extending members or pickets thereof are loosely joined tof gether and which-may be moved out -of actual contact with eachother. without disconprovide means for` Another4r object is to removlng excessive coating jmaterlal from f thefabric 'as it leaves the bath and castingsaid excess material back into the bath. Another object is to provide a new mode vof .procedure v.for separating the links of the adjacent pickets, by changing their rel'- ative speed of movement, after they leave the bath, to separate the contacting parts 2 0 of the pickets.

)Another object is to provide means for moving the fabric -at a uniformly lower speed after it leavesthe bath suflicient to separate the parts and not sulicient to bring them again into contact before the covering or coating is set by drying or cooling.

Other objects and advantages will here` inafter appear from a consideration of the following description, when taken in 'conjunction with the drawings, wherein :e-

" Fig. 1 is a schematic plan view of a machine. l f

Fig. 2 is a side elevation thereof. Fig.- isan enlarged plan view.. of a frag ment of a fabric as it appears immediately after receiving the coating. Fig. lis an enlarged section taken on line 4-'-4 of Fig. 1.

In all of the views the same reference 60 characters are employed to indicate correspending parts. i

' rIhe invention will be explained with respect to its use for coating fencing of the type known as chain fabric in which a sea ries kof transversely extending picket memi 4bers are loosely joined together by interconnection of their mesh wires.

f These picket members are loosely con` l2 nected and independently movable, to a limted extent, but not disconnected.. When japan or a galvanizing vcoating withpaint, coating it is desirable to maintain them out of contact to insure a smooth and uniform coating. Y

invention may In my copending application Ser. No. led June 22, 1923,' now Patent Number 1,489,076,l I have disclosed aineans whereby the pickets of the fabric are positivelyheld lout'of contact with each other until the coating sets or dries. In the presentapplication the pickets are separated by change of speed of movement at the time when thechange takes place.

In any event the sheet or strip of reticulate fabric is submerged in a suitable bath of coating material, such as heated spelter, for galvanizing, a paintlike coating, or a suitable varnish or paint while vcontinuously movin and after being submerged it is suitab y vibrated to shake o' the excess of coating into the bath fand allowed to cool and harden before being rewoundinto a ro'll for storage or shipment.

' In the drawings I have illustrated scheor a japanning solution for 'roV matically a machine by means of which my be carried into effect. The machine is generally indicated by 10 in which a roll llof uncoated fabric, to be coated, is mounted on a serles of rollers 12 and 13 supported on a-suitable 4pedestal 14. A tub or kettlel contains the coating material, which maybe molten spelter when the fabric is to'be galvanized. The spelter '16er other coating material may be heated in the'kettle by any suitable means.

Located in the kettle and secured to an angle bar 17 are a vseries of J-shape fabric guide bars 18 and secured to an angle bar 19 is a dividing plate 20.

. The fabric 11 is locatedin the kettleibetween the sides and bottom thereof 'and the f' guide bars 18. The guide bars prevent the fabric from rising inthe bath out of'conn tact with the coating material.

Any suitable means may be employed for driving the machine. The power may be applied to the driving pulley 21 which is secured to `shaft 23. A sprocketwheel 24 on shaft 23 drives shaft 26 thru the sprocket chain 27 and the sprocket wheel 28 on shaft A shaft 29 mounted above the outer-edge of the kettle is driven at the same speed as shaft 26 from a sprocket wheel on shaft 26 Ly chain 30, which passes about sprocket wheel 31 on shaft 29.

A series of fabric-moving sprocket wheels 32 are mounted on shaft 29. These sprocket wheels have sprockets properly spaced to engage mesh openings of the fabric to move it into the tub.

-Similar sprocket wheels 33 are mounted on shaft 26 to pull the fabric out of the bath at the same speed at which it was moved into the bath by sprocket wheels 32.

The fabric after leaving sprocket wheels 33 is received on a smooth inclined table 34, the inclination of which may beadjusted by hand wheel 35 which is mounted on shaft 43G and which carries a miter gear pinion 37 that is in mesh with the miter gear 38. The gear 38 has a central threaded bore to raise and lower the screw threaded shaft 39, pivotally connected to the table 34 and 39. By this means the inclination of the table 34 may conveniently be adjusted.

lVhen the fabric is being raised from the bath, an excessive amount of the coating liquid is liable to adhere to it and form stalactites or whiskers which is objectionable. To avoid this effect I provide means for automatically striking the fabric a smart blow at regular intervals.

To this end I provide a rod 44 extending across the fabric and sup orted on swingingr arms 45, pivoted to the rame46 at 47. three-arm bracket 48 is pivoted to the frame 46 at 49. Arm 50 is connected to the rod 44. Arm 5l is connected to a coil spring 52 which is secured to the frame 46, at 53, and yieldingly holdsthe bracket in position shown in full lines in ,5. Arm 54 is normally in the path of the projections 55 carried by the wheel 56 and which is fixed on the shaft 26.

lVhen a lug 55 strikes the arm 49 it moves the bracketA into dotted line position against the'stress of the spring 52 with the rod 44 retracted. lVhen the lug 55 releases the arm 54 the spring causes the rod 44 to move forward at high speed and strike the fabric l1 a sharp blow, moving the fabric temporarily as shown by dotted lines at 57. The impact of the rod with the fabric causes the excess of coating material to become dislodged from the fabric and fall back into the kettle.

The means for jarring the fabric to remove the excessive coating material is carried by the same support which carries thc front end of the table and its sudden movement also jars the table 34 and causes the fabric to move slowly down the table at a slower speed than that at which it was being moved in the passage thru thel coating bath. The result is that the pickets 40 become separated to an irregular degree, as shown in F ig. 1.

The inclination of the table 34 may be adjusted in the manner disclosed to any suitable degree to vary the effect of gravity upon the fabric in its movement down the table.

Any suitable artificial means may be employed for drying the fabric, as it slides gown thevtable, or after it leaves the coating ati.

Having described my invention what I claim as new and desire to secure by Letters Patent, is

1. The method of coating metal fabric having loosely connected .independently movable members which includes moving theI fabric through a coating bath; delivering the fabric on an inclined support, the inclination of the support being such as to cause the fabric to move therefrom by effect of gravity at a speed to Separate said members.

2. The method of coating metal fabric having loosely connected independently movable members which includes moving the fabric through a coating bath; delivering the fabric on an inclined su port; jarring the fabric and support an adjusting the inclination of the support to cause. the fabric to move therefrom at a speed to separate said members.

In testimony whereof I hereunto subscribed my name.

NOAH S. HARTER.

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