US806420A - Cutting mechanism for wire-fabric machines. - Google Patents

Description

N0. 806,420. PATENTED DEC. 5, 1905.

' Q- S. MARSHALL. CUTTING MECHANISM FORWIRB-FABRIC-MAGHINES.

APPLICATION IILE'D m3. 11. 1905.

4 SHEETS-SHEET 1.

' [we 'r" C. r5. m m

Wifmses PATENTED DEC. 5, 1905.

4 SEEETSSHEET 3.

0. vs. MARSHALL. v v GUTTING- MECHANISM FOR WIRE FABRIC MACHINES."

1 APPLICIATION FILED MAR.17| 1905.

- STATES PATENT orries. v

CLINTON S. ARSHALL, or woRoEsTfER. MAS AC USETTS, ASSIGNOR T AMERICAN STEEL & WIRE COMPANY or NEW JERSEY, or wo cES VTIER, MASSACHUSETTS, ACOBPORATION OFINEW JERSEY.

'ouT'fi iNe; MECHANISM F on? wlRE -FABR lC MACHINES.

rid-806,420.

' acitizen ofthe United States,re'siding in the city and county of Worcester,-IState of Massachusetts, have invented certain newand useful" Improvements 1 in "Cutting Mechanism for Wire- Fabric Machines; and I'do hereby declare thefollowingto be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Theinve'ntion relates in general to the machi-neoriginally covered in the patents to A. J. Bates, February 23,11897,No. 57 7 ,639, and

provements on which were patented-to said Bates and'J. A. Oocker, jointly, June 30,

1903, No. 732,1 55; and'the present-invention relates specifically to that part of the machine covered'by the Bates and'Oockerpate nt where a drum 'is employed with vertically-reciprocating crimping-bars which grip the longitudinal wiresand pull the fencing through-the machine, passing it on to the drum, on which it is wound ready for the market.

The object of the invention is to provide for automatically and simultaneouslycutting all the longitudinal wires, thus saving the time and labor required to cut them separately by" 3 hand, ashas heretofore been necessary whenever it was desiredto separate the-fencing already wound on the winding-drum from that passingthrough the machine.

In orderto effect the above object, :I pro vide the feeding-drum of the before-mew, tioned-Bates and Oocker patent with a knife baror bars sliding vertically in grooves in the shell of the drum alongside of the stationary plates of the crimping mechanism, and 1 provide for operating this knife or knives, au-

tomatically by simply throwing into the path ofthe lower projectingendthereof a cam roller, so that as the feeding-drum revolves the knife is operated by'the roller and'the whole line of wires carried bythe. drum is severed at one operation. The knife-bar is notched to receive each-.strand-wire, and the notches, correspond in number and positionwith those in the crimping-bar and plates carried by the drum. Normally the notches in the knife-bar register with those in the stationary crimper-plates; but when-the camroller engages the .lower end of thebarit Specification of Letters Patent. Applioation'filed March 17. 1905., Serial no. 260,608.

Patented. Dec. 5, 1905.

slides itupward and shears'ofl' thewires which lie in the grooves of the plates and bar. The fencing passes through the machine in the same way as described in the former patent ,to Bates and Cocker, and all the strand-wires are gripped by the crimper-bars of the feeding-drum at the same period as in the patent,

so as topull the fencing through the machine and pass it onto the winding -drum. The present inventionisconcerned, however, only with the cutting of the strand-wires, and so far as the crimping of the wires and-the-pulling-of the fence are concerned the construction v i is or may be-the same as in the formerpatent." October 19, 1897, No. 591,996, certain .im-

The present improvement is illustrated vin the accompanying drawings, wherein- V Figure 1..is a horizontal section through the ;rear end ofthe machine, showing the crimping and feeding drumand other parts. Figs.

tively, on Fig. 1.

bar-operating ism.

patent, with' stationary crimping-bars 0 seated in longitudinal grooves inthe shell of the drum at suitable intervals apart. 1 These bars are arranged in pairs, as shown, and between themslide similar bars 0Z,that are provided with notches corresponding in shape and position with those in the stationary bars. The movable bars project'beyond the heads of the drum. at both ends and carry each asmall roller e at the lower end, which rides 'on a cam-trackf, which is inclined, so that as the roller travels over its upper surface each movable crimper-bar is given asufiicient IOngitu-j .dinal movement between thestationary barsto grip the strand-wires and enable the drum ,to pull the fencing through the machine and put an additional crimp in these so, also, as to wires;

- The presentinventioniis not limited to any particular number oficutters but as here ho wn. the, crimpin'gwoller *is provided with two cutters at diametrically opposite points.

As best shown in Figs. 2 and 4, at these points one of the stationary crimper-plates d is made stationary member of the cutting mechanism against which slides the movable knife-bar g, before referred to. This bar 9 also projects below the head of the drum and has at its lower end a shoe it, and on the base-plate of the machine at any suitable point, but pref'-' erably inside of the frame or plate on which the cam-track f is mounted, a cam-roller z' is located in such position from the center of the drum that as the latter revolves the shoe will strike the roller when the latter is thrown into operative position and cause the movable knife-bar to be operated, shearing off all the longitudinal wires simultaneously and making a clean cut clear across the fencing.

The cam-roller z is mounted in one arm of a bell-crank lever k, that is pivoted at its angle in a stand or bracket Z, bolted to the baseplate of the machine, so that when the lever is rocked the roller is thrown into and out of position to engage the shoe it on the'end of the knife-bar. The normal position of the cam-roller is shown in dotted lines in Fig. 5, in which position it is held by the tension of a spring on, that is connected at its upper end to a standard 92. and has its lower end fastened to a bar 0, one end of which is pivoted to the bell-crank lever and the other end of which passes loosely through a perforation or bearing 0, rising from the base-plate of the machine. As best shown in Fig. 1, this mechanism for operating the knife-bar is preferably located inside of and near the end of the cam-trackf, which operates the crimper-bars, so that the parts are in convenient position for the operator and so, also, that the crimper-' bars will release the strand-wires at or immediately after they are cut. The cam-roller being normally in the position indicated in dotted lines in Fig. 5 and the operator seeing that sufficient fencing is wound upon the winding-drum a and desiring to cut off the wound roll without discontinuing the operation of the machine simply presses his foot upon the lever 0 and depresses it against the tension of the spring m until the bell-crank lever brings the cam-roller i into the position shown in full lines in Fig. 5, in which position the shoe it of the knife-bar g, traveling in the direction of the arrow in Fig. 5, will strike the roller and cause the bar to slide in its groove in the feeding-drum sufficiently to shear off all the longitudinal wires between the edge of said bar and the edge of the corresponding fixed bar d. There may be as many of these knife-bars as desired. It will be found, however, that two are suflicient, and one may be all that is necessary.

Any suitable means may be employed for returning the knife-bar to position after having been actuated by the cam-roller. In Fig. 2 I show the same means which is illustrated and described in the Bates and Cooker patent for returning the movable crimper-barsviz., a roller o positioned so as to engage the upper ends of the bars and depress them the roller in the present improvement acting also on the upper end of the knife-bar to return it to the normal position, with its notches tregistering with the notches s in the crimperbars, as shown in Fig. 3, so that the wires are received in the notches of said crimper and knife bars in precisely the same way that they are received in the bars of the feeding-drum of the former patent.

It is to be noted in respect of the above-described improvement that the operation of cutting the wires is entirely distinct and separate from that of the crimping-bars and that the cutter may be employed or not, as desired, and that when employed it may be thrown into action whenever desired and immediately resumes its normal position after the shoe of the knife-bar has passed off the cam-roller.

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

1. In a machine for making wire fencing having a plurality of strand-wires, the combination of a rotary drum, a knife-bar carried thereby for severing all the wires simultaneously, and means independent of the drum for operating the knife-bar, said means being normally out of action but adapted to be thrown into operative position by the operator whenever desired.

. 2. In a machine for making wire fencing having a plurality of strand-wires, the combination of a drum having means for gripping the wires and pulling the fencing through the machine, a knife-bar carried by the drum for severing all the wires simultaneously, and a cam-roller independent of the drum for operating the knife-bar, said roller being normally inoperative but adapted to be thrown into operative position by the operator.

3. In a machine for making wire fencing having a plurality of strand-wires, the combination of a drum having means for crimping the wires and pulling the fencing through the machine, a knife-bar carried by the drum for severing all the wires simultaneously, a shoe or projection on one end of the bar, a bell-crank lever pivoted independently of the drum, a cam-roller carried by one arm of the lever in position to be engaged by the shoe of having a plurality of strand-wires, the cornpiece connected to the lever by means of which bination of a drum having means for gripping the operator may rock the lever against the vand pulling the fencing through the machine, a spring and lift the cam-roller into position to knifebar carried'by the drum for severing all. be struck by the knife-bar shoe to operate the 1 5 5' the Wires simultaneously, a shoe or projection knife as'the drum revolves.

on the end of the knife-bar extending below i In testimony whereof I affix my signature in the drumhead, a "bell-crank lever pivotedunpresence of two witnesses.

der the drumhead and carrying a cam-roller CLINTON S. MARSHALL. on. one arm, a spring connected to the other Witnesses: 10 arm of the lever' for holding the cam-roller in f Trios. MAGDU'FF,

, a normally depressed position, and a foot- WM. A. BACON.

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