US1170383A

US1170383A - Spreading-machine for coating fabric with rubber or other like plastic materials.

Info

Publication number: US1170383A
Application number: US83417714A
Authority: US
Inventors: Alfred Wood
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-04-24
Filing date: 1914-04-24
Publication date: 1916-02-01
Anticipated expiration: 1933-02-01

Description

A. WOOD." v SPREADING MACHINE FOR COATING FABRIC WITH RUBBER OR OTHER LIKE PLASTIC MATERIALS.

APPLICATION FILED APR. 24, 1914. v

Patented Feb. 1, 1916.

2 SHEETS-SHEET I F E 1 (NR- way? @666 as A. WOOD. f

SPREADING MACHINE FOR COATING FABRIC'WITH RUBBER OR OTHER LIKE PLASTIC MATERIALS. APPLICATION FILED APR. 24. I914.

2 SHEETSSHEET 2.

1,179,33. I Patented Feb.1,1916.

4 V I 1700'67L Zl/Zizmsae all Z/faoal F The fabric i to the tail end of a special piece,

UNITED SPREADING-MACHINE FOR COATING Specification of Letters Patent.

ALFRED WOOD, OF UXBRIDGE, ENGLAND.

FABRIC WITH RUBBER OR OTHER LIKE ELASTIC MATEBIALS.

Patented Feb, 1, 1916..

Application filed April 24, 1914. Serial No. 884,177.

To all whom it 1n ay concern:

Be it known that I, ALFRED VVooD, a subject of His Majesty the King of England, residing at lVestbury, Cowley Road, UX- bridge, in the county of Middlesex, Kingdom of England, have invented'certain new and useful Improvements in or Relating to Spreading-Machines for Coating Fabric with Rubber or other like Plastic Materials, of which the following is a specification.

This invention relates to improvements in spreading machines for coating fabric with rubber or other like plastic materials.

The invention is hereinafter illustrated in, and described with reference to the accompanying drawings in which Figure 1 is a sectional side elevation of part of a spreading machine; Fig. 2 is a detail front elevation also of a part of such a machine; and'Fig. 3 is a detail view of the principal parts of the present. invention drawn to an enlarged scale.

Such machines as commonly used for treating canvas for use in the manufacture of pneumatic tires and for waterproofing fabrics usually comprise as also does the present machine, a roller a over which the material b to be treated is passed and in line with this roller is a vertically adjustable gage 0 to which the doctor or blade at is attached. This gage 0 is carried at its ends in suitable bearings so as to be controlled by suitable hand wheels and screws e by means of which the gage c is raised or lowered to adjust the thickness of material to be applied to the fabric.

V b to be so covered is first wound upon a wooden roller or box 7 as it is commonly calledv and this box has as shown a square hole f through the center, which enables it to be placed upon a shaft or center 9 which is of square section, with round section ends, for the purpose of being carried in brackets. In operation the front or outer end of the fabric not shown in the drawings to be so proofed is sewn, or pasted or'leii 'h, of canvas called a leader, and 't is t en placed over the aforesaid roller a. The gage 0 is then adjusted, and the proofing material, having been made plastic, is placed in front of said gage. The proofing material is kept from flowing over the sides of the fabric, by means of a pair of side plates or cheeks h which in the machines now forementioned plate or check commonly used are bolted to angle brackets which latter are adj ustably bolted to the face of the gage c, by a bolt and sliding block which fits in a slot such as 0' but of rectangular section which extends along the front of the gage c. In all such machines as the operation proceeds and the fabric I) does not run in a straight line, to the roller a' and the gage d, it is imperative that the attendant shall constantly so adjust the angle brackets carrying the side plates as to keep the proofing material from flowing over the edges of the fabric.

Now the principal object of my invention is to provide means for automatically effecting this adjustment determine the width being treated in accordance with the variations in the feed of the fabric.

In carrying out my present invention I provide in place of the previously described angle brackets, a pair of sliding or traveling carriages i i which are attached to the front of the gage in a suitable manner as by a feather key j running in the slot or groove 0 and by studs and nuts Z and fiat spring washers (not shown) to enable just the required amount of tightness to be iven to the carriages, as is necessary to withstand the pressure of the proofing material only when it is placed in position between the side plates or cheeks it carried thereby. To a horizontal or table part m of each carriage z is attached an adjustable angle bracket n to which is bolted the betains the proofing material in place, the said adjustment being controlled by the knurled wheel 0 and screw p which passes through a fixing bolt 9 and is secured by a nut r on the latter. Through a tubular pait s of each sliding carriage i is passed a rocker shaft 25 which carries a crank u attached, and close to the other end of same is attached a pawl o with two horns 'v' 0 one of which is bent or offset out of line with the other one.

of the side plates which.

h which -re- A hole may be drilled through the tubularpart 8 of'the carriage i and penetrating through the rocker shaft t into which hole a stop-pin to may be placed to keep the apparatus in a neutral position when so required.

A light rod :2 is pivotally attached by a screw 1 to each adjustable bracket 11 and at one end each, rod 00 is provided with an eye a tends to move the crank pin 4 and the top left hand side.

end of the light rod 0 in an outward direction as regards the fabric Z), and the bottom end of the rod and plate in an inward direction, until the plate comes into contact with the edge of the said fabric one plate 5 being on the right hand sideand the other on the Immediately above the beforementioned pawls are placed tWo toothed racks 7 and 8 one behind the other, and both fastened together. These racks extend along the top front of the gage, and are plain at the center and ends to provide supports or bearings. The teeth on these racks are formed in two groups those on the front rack 7 pointing toward the ends and those of the other one 8 pointing toward the center.

Suitable means are provided to enable the racks to be vibrated or reciprocated and for this purpose I provide a drag link 9 which is jointly attached to their ends. To give motion to the drag link 9 I provide a suitably driven gear wheel 10 which has an eccentrically arranged boss Which is surrounded by a strap or sheaves 11 the motion from which is conveyed to the aforesaid drag link 9 by means of a bell crank lever 12 or other side of the machine.

In operation the fabric passes from the box f and is passed over the rollers 13 and a and under the gage 0 which is adjusted to intermediate gear suitably arranged on the 'the required depth, the sliding carriages i are then brought into position, and the cheeks and plates h are adjusted to receive a supply of proofing material which is placed across the fabric. The machine now being started, it will be seen that by the springs 6 keeping a suitable pressure under the pawls 'v on the sliding carriages i the plates 5 on the pendant rods 00 are lightly pressed against the edges of the fabric 6 and that if the fabric moves away at one end it allows the horn o on the pawl to be lifted into mesh with the vibrating rack 8. In this position it remains until the sliding carriage has been moved by the reciprocating rack after the fabric 6 until the plate 5 on the 1 pendant rod a; is again in contact with the edge of the fabric which thus brings thesaid pendant rod 5 and the pawl o to their thus moving sidewise the opposite edge of thefabric will have simultaneously engaged the pendant plate 5 on the other sliding carriage i on the other side of the fabric 1) and it will have moved it outwardly thus compressing the spring 6 under the pawl and causing the pawl o to be tilted in an opposite direction to that of the first described carriage thus bringing the inner. born '0' into the front rack 7 and thereby causing the sliding carriage i to move outwardly until both the side plates 5 in their normal position just make light contact with the two edges of the fabric 6. Thus the side cheeks 5 will be automatically. kept accurately to the edge of the fabric at all times.

In order to improve the feed of the fabric instead of making the boxes on which the fabric is wound of plain wood I may as shown on the one 7 in Fig. 1 cover the surface with partially perforated thin steel rib bon 14 which presents a rough surface to the fabric 12 and thus prevents it from sliding along the surface of the boxes while the operation of spreading is in progress.

What I claim as my invention and desire to secure by Letters Patent of the United States is 1. In a spreading machine for coating fabric with rubber or other like plastic materials, the combination with side plates for retaining the plastic material, of means for feeding fabric past said side plates, and means for automatically controlling or adjusting the side plates in accordance with variations in the lateral feed of the fabric.

2. In a spreading machine of the kind described for coating fabric or other like plastic materials, the combination with a plurality of side plates for retaining the plastic material, a slidable support for each of said .side plates, said supports being automatiadapted to operate each of said slidable members, and means controlled by variation .in the feed of the fabric adapted to operate said racks.

5. In a spreading machine of the character set'forth, the combination with a plural; 12j5 ity of side plates, of a slidable mounting for each of said plates, a rack bar adapted to operate each of said slidable members, a pivotally mounted arm on each slidable mem her, a plate on said arm adapted to engage 13 the edge of the fabric being fed to the machine, springs adapted to hold said plates in position, and means carried by each of said arms adapted to engage said rack bars, whereby the variation in the width of the fabric feed will free .the position of said slidable members.

6. In a spreading machine of the character-set forth, the combination with a plurality of side plates, of a slidable mounting for each of said plates, a rack bar adapted to independently operate each of said slidable members, a pivotally mounted arm on each slidable member, a plate on said arm adapted to engage the edge of the fabric being fed to the machine, springs adapted to hold said plates in position, and means carried by each of said arms adapted to engage said rack bars, whereby the variation in the width of the fabric feed will free the position of said slidable members.

7. In a spreading machine for coating fabric with plastic materials, side plates for retaining the plastic material, and means for automatically controlling or adjusting the side plates in accordance with the lateral variations in the feed of the fabric.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

ALFRED WOOD.

Witnesses:

J. S; Wiinnns, FRANK BLAKEY.