US902198A - Wire-netting machine. - Google Patents

Description

'A. -BARLOW. WIRE NBTTING MACHINE. APPLICATION FILED Ill. 18, 1907.

902,198.- Patented Oct. 27,1908.

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A; E. BARLOWI WIRE NETTING MACHINE. APPLICATION I'IIIED MAR. 18, 1907.

Patented Oct.27, 1908.

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SSAGHUSETTS, ASSIGNOR TO WRIGHT WIRE TTS, A CORPORATION OF MASSACHUSETTS.

. a: WIRE-NETTING MACHINE.

Patented Oct. 2'7, 1908.

Application filed March 18, 1907. Serial No. 362,847.

To all whom it may concern.-

Be it known that I, ARTHUR E. BARLOW, a citizen of the United States, residing at \Vorcester, in the county of WVorcester and Commonwealth of Massachusetts, have invented certain new and useful Improvements in a VVire-Netting Machine, of which the following is a specification, accompanied by drawings forming a part of the same, in which- Figure l is an end view of the framework of a wire netting machine embodying my in vention, shown in section on the plane of one of the bobbin holders. Fig. 2 is a top View of a portion of the bars in which the upper twisting gears are journaled, at one extremity of their horizontal reciprocating motion.

Fig. 3 is a view of the same at the other extremity of their motion. Fig. 1 is a section on line 1 1, Fig. 2. Fig. 5 is a section 011 line 5-5, Fig. Fig. 6 represents a por tion of a fabric produced on the machine embodying my invention, and Figs. 7 and 8 represent front "iews of a portion of a wire netting machine embodying my invention.

Similar reference letters and figures refer to similar parts in the different views.

My invention relates to improvements in a wire netting machine for producing hexagonal meshed wire netting. By my improvements I am enabled to produce the completed fabric upon one machine, to improve the quality of the completed fabric and lessen the number of operations required for its production.

My invention comprises means in a single machine for twisting a multiplicity of wires alternately in opposite directions to form a selvage and incorporating said selvage at each alternate twist with the body of the fabric which is produced at the same time upon the machine, and it consists in the construction and arrangement of parts as hereinafter described and pointed out in the anneXed claims.

The wire netting machine to which my invention relates is provided with twisting gears made in halves, journaled in a stationary and a sliding bar and actuated by a reciprocating rack, in the well known manner in machines of this class, and therefore I have not shown in detail the construction and operation of the parts of a wire netting machine not directly concerned in my present invention, as these parts will be well understood by those familiar with wire netting machines.

Referring to the accompanying drawings 1 is one of the vertical sides of the frame work of the machine, 2 and 3 are the upper bars of the machine in which are journaled the upper twisting gears. As is usual in machines of this class the twisting gears are made in halves, one half being held in each of the bars 2 and 3; in the usual manner, also, the bar 2 is stationary and the bar 3 capable of a sliding motion, thus providing for the shifting of the halves of the twisting gears in the well known manner.

The upper twisting gears journaled in the bars 2 and 3 consist of half sections 4 and 5. The half section 1 is provided with a longitudinal hole 6 to receive a wire 7 from a cop or bobbin 8. The half gear section 5 is provided at its lower end with a horn 9 having a hole 10 extending through the horn 9 and the gear section 5, to receive a wire 7 brought through the lower twisting gears from a reel, not shown. The horn 9 stands obliquely to the axis of the rotating gear sections in order to carry the wire away from the cop 8. Sliding in the stationary rail 2 is a reciprocating rack 11 engaging the gear sections by which the latter are rotated alternately in opposite directions in order to twist the wires together which pass through the respective gear sections.

As the wires are twisted together to form the fabric, the latter is carried over a takeup roll 12 having a series of projections 13 engaging the meshes of the fabric.

The above described portions of the machine are constructed and operated like the similar portions in wire netting machines now in common use and will be readily understood by those conversant with wire netting machines.

By my present improvement I provide one of the half sections 14;, corresponding to the half sections 5 before mentioned, in the ma chine with a multiplicity of holes at the top thereof, in the present instance three in number, a, b, and 0, Figs. 2 and 3. Through each of the holes a, o, and 0 I conduct a wire 00, y, and a passing the three wires together through a single hole in both the lower gear section and the upper gear section 14, thereby bringing the three wires side by side be tween the lower and upper twisting gears as shown in Fig. 1. I11 the position shown in Figs 2 and a the half gear section 1% con-- taining the three wires, through the holes a, Z), and '0, is combined with a'half gear section 15 which is blank. As the half gear sections 14: and 15 are rotated by the movement of the rack 11 the wires :0, y, and .2 will be twisted together inone direction above the gear section M as shown at 16, Fig. 6,

the half gear sections 1 containing a single hole 6 .for one of the cop wires. Thls position is shown in Figs. 3 and 5. By the return movement of the rack 11 following the change in position of the bar 3, the already twisted strand 16 containing the three wires 41:, 2 and z is twisted with the single cop wire from the hole 62 as shown at 17 Fig. 7 but in the opposite direction from the twist already imparted to the wires 00, y, and 2. The immediate engagement of the cop wire 7 with the twisted strand 16 prevents all but a slight untwisting above the gear section 14, but the twist imparted to the three wires below the twisting gear is taken out by this operation. In this way I provide a reinforcement or selvage for the fabric which is twisted as it is inserted, and by reversal in the direction of the twisting gears as above described I obtain a twisted selvage which has not been exposed to a continuous twisting strain in one direction.

' As commonly practiced, the method of making the selvage or reinforcing strand for wire netting of the class described is to twist the multiple strands in a separate operation, and to introduce the twisted strand into the netting machine as a single wire. By this method the strand is twisted continuously throughout its entire length in the same direction which requires the annealing of the wire to prevent crystallization. Two operations, therefore, at present required, are dispensed with by my improvement, to wit, annealing the wires comprising the selvage orreinforcing strand and twisting the strand by a separate operation upon a separate machine.

The selvage of annealed wire retains all bends which it may acquire, thereby warping and distorting the fabric, and the selvage twisted in one direction throughout its length also tends to curl and thereby prevent the fabric from remaining fiat even if noadditional bends are acquired by the selvage strand. The twist imparted to the three wires a, Z), and 0 below thegear section lt by my improvement subjects the wires to little torsional strain owing to the length of the wires between the upper and lower gears and in addition the twist is entirely removed at each alternate rotation of the twisting gears. I find, therefore, no necessity of annealing "the xvii-es comprising the selvage strand, and I am enabled to use hard wires possessing a considerable amount of elasticity, which allows them to recover in the case of accidental bends received by the edge of the fabric. As the selvage strand is not twisted throughout its length continuously in the same direction it possesses no tendency to curl and thereby distort the fabric. I thus, by my invention, not only largely reduce the cost 'of manufacture by providing the fabric with a twisted multiple wireselvage strand having the twists formed simultanously with the twisting operations required to form the fabric itself without lessening the production of the machine, but also form a fabric of improved character and appearance.

In the accompanying drawings I have shown the gear sections provided with steel bushings 18 to resist the abrasion of the wire, and the bushing 18 of the half gear section 1% is provided with the three holes a, b, and 0, the remainder of the section 1% being provided with a single passage. The bushings 18 are screwed into the gear sections and can be replaced when worn. I have also shown the half gear section 1% provided with the multiple holes placed at the edge of the fabric which brings the multiple wires into position to form a selvage, but the section 1e if placed in other positions would introduce into the fabric a twisted cable in lieu of a single wire, thereby providing a reinforcement which would add strength and stifiness to the fabric.

- I claim,

1. In a wire netting machine of the class described, the combination with a wire twisting section provided with a single hole for the passage of a wire, of a second wire twisting section provided with a number of holes, each hole arranged for the passage of a wire, means for rotating said section carrying more than one wire, separately and in combination with said single wire twisting section, alternately.

2. In a wire netting machine of the class described, the combination with a wire twisting section provided with a single hole for the passage of a wire, of a second wire twisting section provided with a number of holes, each hole arranged for the passage of a wire, means for rotating alternately said section carrying more than one wire separately in one direction, and in combination with said single wire twisting section in the opposite direction.

3. In a wire netting machine, of the class described, the combination with a series of wire twisting gear sections, each having a hole for the passage of wires to form the body of the fabric, of a selvage gear section the body of the fabric,

having a multiplicity/of adjacent holes, and means for carrying "said selvage gear section into and out of engagement with one of the gear sections having a single hole.

4. In a wire netting machine of the class described, the combination with a series of wire twisting gear sections, each having a hole for the passage of single wires forming of a selvage gear section having a multiplicity of adjacent holes, means for carrying said selvage gear section into and out of engagement with a gear section having a single hole, and means for alternately rotating said gear sections in opp0 site directions.

5. A wire netting machine of the class described, comprising a single wire twisting section provided with a multiplicity of holes, each hole arranged for the passage of a wire,

and means for rotating said twisting section alternately in opposite directions.

6. In a wire netting machine of the class described, the combination with a wire twisting section provided with a number of holes, each hole arranged for the passage of a wire, of a blank section without holes, and means for carrying said twisting section into and out of'engagement with said blank section.

7 In a Wire netting machine of the class described, the combination with a Wire twisting section provided with a number of holes, each hole arranged for the passage of awire, of a blank section without holes, means for carrying said twisting section into and out of engagement with said blank section, and means for rotating said twisting section in one direction while in engagement with said blank section, and in the other direction while out of such engagement.

Dated the ninth day of March 1907.

ARTHUR E. BARLOW. Witnesses:

RUFUS B. FOWLER, HENRY WM. FOWLER.

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