US326806A

US326806A - Barb-wire machine

Info

Publication number: US326806A
Authority: US
Publication date: 1885-09-22
Anticipated expiration: 1902-09-22

Description

(No Model.) 7 Sheets-Sheet 1.

J. STUBBE.

BARB WIRE MACHINE. No. 326,806. 4 Patented Sept. 22, 1885.

MllllEBS E 5 T u. PETERS mnphar. Washington. D a

(No Model.) 7 Sheets-Sheet 2.

J. STUBBE.

BARB WIRE MACHINE.

Patented Sept. 22,1885.

MN? 6. 3 6. 3 m m E "m w 3. Q .N w R u U H PETERS, Phowulho n har. Washington, I10.

(No Model.) 7 Sheets-Sheet 3. J. STUBBE.

BARB WIRE MACHINE. I No. 326,806. Patented Sept. 22, 1885.

' Illllllll Illllllll i lllh minim M1119 55 E 5 W Y @Wwm (No Model.) 7 Sheets-Sheet 4.

- J. STUBBE.

BARB WIRE MACHINE. No. 326,806. Patented Sept. 22, 1885.

II/I M11112 5 5 E 5- W12 n. PETERS, Fhum-Lmlognphsr. wnmn mn, u. c.

(No Model.) 7 Sheets- Sheet 5. J. STUBBE.

BARB WIRE MACHINE.

Patented Sept. 22, 1885.

(No Model.) 7 Sheets-Sheet 6.

J-. STUBBE.

BARB WIRE MACHINE.

No. 326,806. Patented Sept. 22, 1885.

Fgaz.

M111]? 5 5 E S- Elllln 1'. X a. 73W,

N. PETERS, Pholwhlhogflpher. Wauhingion. D. c.

(No Model.) 7 Sheets-Sheet 7. J. STUBBE.

BARB WIRE MACHINE.

Patented Sept. 22, 1885.

N. PETERS. Pholvlithopiphor, Wlih'mmm D. C.

llnirsn STATES ATENT Fries.

JOHN STUBBE, OF PITTSBURG, ASSIGNOR TO THOMAS B. KERR, OF ALLE- GHENY CITY, PENNSYLVANIA.

BARB-WIRE MACHINE.

SPECEPICATZON forming part of Letters Patent No. 326,806, dated September 22, 1885.

Application filed June 3,1885. (No model.)

To all whom, it 'nuq concern.-

Be it known that I, JOHN STUBBE, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful 5 Improvement in Barb-\Vire Machines; and I do hereby declare the following to be a full, clear, and exact description thereof.

The object of my invention is to simplify, cheapen, and improve the manufacture of i barbed wire. I will describe it with reference to the accompanying drawings, in which Figure 1, Sheet 1, is a perspective view of my improved machine, partly in section, on the line .2 z of Fig. Fig. 2 is a detached 15 perspective view of a part of my machine which produces intermittent motion of parts of the mechanism. Fig. 3, Sheet 2, is a plan view of the machine. Fig. 4 is a sectional view of the intermittent gearing device on the 20 line x 00" of Fig. Fig. 5 is a sectional view on the line a m in a plane at right angles to the sectional plane of Fig. 4. Fig. 6 is a plan view, and Fig. 7 an edge view, of the slotted arms marked 8 S in Figs. 2 and 4. Fig. 8,

2 Sheet 3, is a side elevation; and Fig. 9, Sheet 4, a vertical cross-section of the machine on the line 50' x of Fig. 3. Fig. 10 is a similar section on the line ;2 y of Fig. 3. Fig. 11 is a perspective view of the bed-knife detached.

0 Fig. 12, Sheet 5, is a longitudinal axial sec tion of the strand-wi re guide and barb-twister, on the line 10 w of Fig. 3, and on the line 06 00 of Fig. 13. Fig. 13 is an end View of the same. Fig. 14 is a perspective view of the end of the 5 rotary wrapper shown in Figs. 12 and 13.

Figs. 15, 16, and 17 are end views of the barbwrapper when it has accomplished a oneseventh, a whole, and one and one-half revolutions, respectively. Fig. 18 is a vertical 4o crosssection on the line z z of Fig. 12, showing the position of the barb when it first enters the wrapper. Fig. 19 is alongitudinal vertical section of the moving knife which severs the barbs, showing its relation to the 5 barb-wrapper. Fig. 20 is a horizontal cross section on the line 1 y of Fig. 19. Fig. 21 is a side elevation of the barbwrapper shown partly in section. Fig. 22, Sheet 6, is a plan view of the machine shown in connection with a strand-wire twisting and reeling device. Fig. 23 is a side elevation of the same, some of the parts shown in Fig. 22 being omitted for the sake of clearness. Fig. 24, Sheet 7, is

a detached perspective view of the barb-eutting knives and wrapping-tube. Fig. 25 is a detached side view of the moving knife and the blade of the bedknife, showing their relative situations. Fig. 26 is an enlarged detached View of the part marked 0 in Fig. 12. Fig. 27 is a longitudinal section of the wrappingmandrel, omitting the part shown in Fig. 26.

Like letters ofreference indicate likcparts.

In all the figures of the drawings except Figs. 15, 16, and 17, the several parts of the machine are shown in the position which they occupy when the barb has been inserted between the strands and is being severed.

Referring to the drawings, A A, Figs. 3, 22, and 8, represent the rotatory spools, of ordi- 7o nary construction, from which the two strandwires a a are fed into the machine by means of feed-rollers a to", situate in front of the spools.

Between the feed-rollers and the spools A 7 5 is a guide-box, (6, having a cylindrical bore and an outwardly-flaring month. In passing through this box the wires are brought into adjacent alignment before passing between the rollers. Thelowerfeed-roller, a", is driven by a transverse shaft, a, to which it is keyed, and the axis of the upper feed-roller, a, is driven by a gear-wheel, of, which meshes into a pinion, a, on the shaft a, the rotation of the two rollers being such as to draw the wire strands from the spools and to feed them to the other parts of the machine. (See Figs. 3 and 9.) The gear-wheels a a are preferably made integral with their respective feed-rollers, as shown in the drawings. (See Fig. 10.) The axes of the feed-rollers are in the same vertical plane, and in order to regulate their pressure upon the interposed strand the upper roller is journaled in bearings B, provided with collars b, movably mounted in upright 5 posts or standards If. A crossbar, 1), connects the upper ends of two vertical standards which form part of the journalboxes B, and on another cross-bar, 12 which connects the ends of the posts I), is mounted a cam, b, 109 which engages the cross-bar b By depressing a handle, I), of this cam from an upright to a horizontal position the eccentricity thereof will act on the crosshead b forcingit and the upper feed-roll on its sliding bearings down against the face of the lower one. The fixed posts b are provided with suitable inclosing coiled springs, 1), bearing against the under side of the collars b, which oppose a resistance to the action of the cam, and, when the press ure of the latter is released, raise the upper roller with its bearings away from the lower roller. The cross-head b is preferably made in form of a bow-spring, as shown in thedrawings, so that as strand-wires of unequal gage or any other obstruction pass between the feed-rollers they may cause the rollers to yield somewhat. This device for moving the feedroller, an edge view of which is shown in Fig. 8, is more clearly illustrated by a rear view in Fig. 9, and by a side view of a similar device for regulating the barb-wire feedrollers,'F, shown in Fig. 8. From the feedrollers the wire is drawn through a guide tube or box, a, Fig. 3, into a larger guidetube, 0, which is in the same axial line. The guidetube is fixed to the bed-plate of the machine by means of a set-screw, 0 or otherwise, and on its forward part is a rotatory shell, 0, which forms the barb-wrapping mechanism. This shell is loosely mounted on the guidetube, so as to be rotatory thereon, and

is provided with a circumferential toothed pinion, 6-, which gears into and is driven by rotation of a cog-wheel, c. The wrapping shell or mandrel c is held ,in place upon the stationary tube 0 by means of an arm or arms, 6,which bear against the outer end ofthe pinion a, and hold it against a stationary collar, 0, which abuts against a part of the box or drum 5,hereinafter to be described. Thepinion c is either made integral with the barb-wrapping tube 0, or is affixed to it by a set-screw, 0. (See Fig. 12.) The latter tube extends somewhat forward of its axial guide-tube c, and at its end is provided with longitudinal open slots 0, which are diametrically opposite each other, and are made through the shell of the tube parallel with its axis. At the end of each of these slots is a circumferential slot or recess, 0 communicating with its longitudi-- nal slot, and made at right angles therefrom. These recesses are opposite and extend in the same direction, the inner and outer ends of one being diametrically opposite the inner and outer ends of the other, respectively. The length of each recess is about one-seventh of the circumference of the wrapping-tube 0. At the end of the inner fixed guide-tube, c, is a transverse partition, 0 which extends diametrically across the tube and tapers backward, thus dividing the latter into two parts, through which the strand-wires pass, and they are thus kept separate and prevented from being twisted together back to this point. The preferable mode of. constituting this socalled partition c is by use of the device shown in Fig. 26,which is a small core or plug, 0', of the same diameter as the internal diameter of the wrapping-tube, and capable of fitting stationarily therein. The plug is perforated longitudinally with parallel holes m m, which taper from their rear to their forward ends, so that the several strand-wires may be easily inserted into them. For the same purpose the rear'end of the plug is beveled. As shown in Fig. 12 of the drawings, the forward ends of the stationary guide-tube c and the rotatory wrapping-tube are made in detachable pieces, since these parts should be easily adjustable, and may be needed to be removed for repairs. The inner ends of thelongitudinal slots 0 are preferably in the same transverse plane with the end of the guide-tube c and with the outer end of its partition 0 so that the strand-wires opposite to this point are always separated and ready for the insertion of a barbblauk.

The barb-wire is fed from a spool, F, Figs. 3 and 9, into the transverse slot-s a of the wrapper, between the separated strands, by feed-rollers f F, similar in construction and operation to the strand feed-rollers a a". The upper barb feed-roller, F, rotates in movable bearings which are so provided with collars f, mounted upon fixed vertical posts f, as to be capable of being raised or lowered thereon. The postsf have a cross-head, f and a cam, f, pivoted thereto, and provided with a leverhandle, f, by raising or lowering which the cam is made to act on a transverse spring, f which is connected with the movable collars f, thus depressing the latter against the coiled springs f", or raising them therewith. The

upper feedroll, F, is thereby made adjustable relatively to the lower roll, f, in the same manner and for the same purposes which have been described with respect to the strand feedrolls a a". These feed-rollers Ff and a a are all actuated by the same intermittent gearing, so that when sufficient wire has been fed to make a barb of theproper length. the rotation of both sets of rollers stops. Acam, g, Fig. 9, thereupon immediately actuates a movable knife, h, Fig. 19, which severs the barb-blank from its strand, andat the same time the barbwrapper 0 begins to revolve, thereby wrapping the barb around the strand-wires, as shown in Figs. 15, 16, and 17. \Vhen the wrapping of the barb has been completed by a one and one-half revolution of the tube 0, the intermittent gearing, before referred to,

.stops its rotation and starts the rotation of the feed-rollers a a and f F. The barb thus atfixed to the strand-wires then moves from the slots 0 of the barbwvrapper through the hollow axis d of a rotatory spinner, D, Figs. 22 and 23, to a reel, E, which is mounted in the frame of the spinner transversely to its axis. The rotation of the spinner D iscontinuous, and serves to twist the two strand-wires, t0- gether. The rotationof the reel E intermits with the intermissions of motion of the feed rollers aa", and during the motion of these rollers winds the twisted and barbed wire upon its drum and draws it through the machine. I will explain the operation of these parts more fully hereinafter.

Poweris communicated to the machine preferably by a belt which operates a belt-wheel, d, 011 the front end of the spinner, and is thence transferred by a crossed belt, cl", and another belt, d, from the rear axis of the spinner to a shaft, G. On the shaft G is a cam, g, which operates the knife lever H, Fig. 1. Theend of the arm of the knifelever is provided with a wheel or roller, 71 which rests within a groove on the periphery of the cam, a part of which groove is curved laterally, as shown in Fig. 8, so that when the rotation of the cam brings the end of the lever to the curved part the knife at the other end may be moved backward. The knife-lever H extends above the bed-plate of the machine, and is there provided with lateral arms or trunnions 71?, which are journaled in bearings i in 'the block 13, which supports the bed-knife it, Figs. 1 and 11. From the middle part of the trunnions the knife-lever extends in a curved line to clear the other mechanism, and carries at its end a knife, h, which normally is situated in the same horizontal plane and a little forwardof the bed-knife h, so that when actuated by the cam g the knife-lever will force its knife toward the bed'knife it against the barb-strand, and will sever the barb-blank.

By reference to Figs. 2i and 25 of the drawings it will appear that the knife-lever H is pivoted at a point which is in about the same vertical line as are the knife h and the roller h which works in the groove of the cam g. The object and result of this relative situation is to cause the knife h at the upper end of the lever to be moved in a substantially horizontal right line when the lower end of the lever is actuated by the cam g. The barb is thus out without the jamming of the two knives. The moving knife h is secured to the end of the lever H in a vertical slot, h, and is made adjustable therein by a set-screw, h, which works against the knife from above. The barb-strand wire is fed from the rollers Ff toward the recess 0 of the barb-wrapper transversely across the cuttingedge of the bed-knife in an.upwardly-inclined direction, so that when cut by the moving knife it the cut may be lengthwise and beveled to a point, as shown in Fig. 24. This inclination is secured by mounting the guide-tube of the barb-strand upon the inclined face of a guide-block, i, which is affixed to the block i of the bed-knife. The bedknife is affixed to the block '5 horizontally and longitudinally with the machine by means of a plate and bolt, 5', and at the end of theknife there isavertical guide-bar, 2' Fig. 11, which is mounted within a groove in the front of theknife-bloek i, and has its end upwardly inclined in the same angle with the angle of inclination of the guide block This bar is adjustable in its vertical slot by means of a set-screw, i, and it should be so fixed that the wire passing over its inclined end may cross the cutting-edge of the horizontal bed -knife. The adjustability of this guide-bar permits the length of the point of the cut barb to be regulated within certain limits, for if the bar be raised by its set-screw it will raise the strand until it crosses the outer corner of the horizontal bed knife,when a long barb will be cut. By lowering the guide-bar in its groove the course of the wire is lowered and made to cross the cutting-edge at points farther inward, thus producing correspondingly shorter barbs. The moving knife and the upper parts of its lever are clearly shown in Figs. 19 and 24 of the drawings, in which it appears that the knife is mounted in the vertical slot h at the end of the lever, and has a horizontal cutting-edge in the same plane with the blade of the bedknife.

On each side of the barb-wrapping tube 0 is a wrapping-guide, which extends vertically from the bed-plate ol" the machine. The outer end of each of these guides h It extends partially around the wrapper c on a line concentric therewith, and is curved backward on opposite sides of the same. These guides are situate opposite to the diametrical slot 0, and the guide-tube i is so inclined toward the back of the machine (see Figs. 3, 20, and 24) that when the barb is fed through the recess a of this slot both projecting ends of the barbblank may lie back of the guides. The intermittent gearing which aetuates the pinion c" is so timed that when the wrapping-tube 0 stops, the ends of the recesses c are in the course of the barb-wire. \Vhen, therefore, the barbstrand is fed into the wrapping-tube from the feed-rollers, it will pass between the strands to, and will lie diagonally across the longitudinal slot 0 and in the ends of these recesses 0 so as to project from both sides of the tube, Fig. 13. \Vhen at rest in this position, the barb is severed from the strand. During the feed of the barb-strand the strand-wires are being fed from the spools A, while the knifelever H and the wrapping-tube c are at rest. As soon, however, as the feed of the barb ceases, the strand-wire feedrollers stop, the tube 0 begins to revolve, and the knitelever H is actuated by its cam g and cuts off the barb-blank, when the wrapper 0 begins to revolve. In cutting the blank the knife h engages it, forces it back over the face of the bed-knife against the rear side of the recesses 0 and holds it there until a partial revolution of the tube in the direction of the arrow carries these recesses away from the blank and causes the latter to be engaged by the sides of the opposite axial slots 0. In Fig. 15 of the drawings this operation is illustrated, being there performed by a one-seventh rev0lution of the wrapping tube or mandrel. The further revolution of the wrapper 0 will carry the ends of the blank around the inclosing strand-wires, which are kept stationary by the central guide-tube, c, and its partition a and will wrap the blank in the manner shown in Fig. 17 of the drawings. \Vhen the wrapping-tube c has reached the position shown in this figure, having completed a revolution and a half, its intern'iittent gearing will cause it to come to rest. The feed-rollers a a will then immediately start and carry the cable forward, causing the affixed barb to be drawn out of the wrapper, the barb-wire feed-rollers commence to rotate, and the operations are continued, as before described. During the wrapping of the barb-blank the action of the guides h It is to prevent the blank from overlapping or being wound upon itself, and because the blank is fed back of them to hold it in proper relative position with the cable until after the cutting off of the barb and the commencement of the wrapping process. The ends 71. and h of the blank in revolving engage the inclined faces of the guides h" and h,respcctively, and by their inclination are pushed backward so as to wrap hclically around the strand-wires. This will be readily understood by reference to Figs. 15, 16, and.

17 of the drawings. The purpose of the transverse recesses c is to allow a small interval of time to elapse between the commencement of rotation of the wrapping-mandrel, and the be ginning of the wrapping operation, during which interval the barb blank is severed. The outer side of the slot 0 holds the barbblan-k during this interval and guides it in its entrance into the wrapper. It is not, however, indispensable, for the slot may, with some disadvantage, be made to extend lengthwise entirely to the outer end of the wrappingtube. As before stated, the barb-wire is fed into the wrapping-tube 0 so as to rest at the ends of these recesses farthest from the slots 0, and consequently a small period of rotation of the tube, equal in are to the length of the recesses c is idle so far as wrapping the blank is concerned. hen the blank engages the ends of the recesses, the wrapping action begins. The proper position of the recesses for the entrance of the barb-blank is secured by timing its actuating mechanism to turn the Wrapping-tube a number of revolutions which is a multiple of one-half. Thus in the manufacture of the style of barb shown in the drawings one and a half revolution is given to the wrappingtube, and it is clear that at the end of each wrapping operation the recesses 0 will occupy the same relative positions to the course of the barb-wire, though of course at the end of each period a different recess will be presented toward the barbstrand. During theinterval before mentioned the barb is cut, and any slight inaccuracy in the timing of the knife-lever cam g is corrected. The moving knife steadies the barbblank, and adjusts it from an inclined position into one at right angles to the strandwires by pressing it against the sides of the slotted recesses 0 For this purpose the ec centricity of the cam is somewhat elongated, so that the knife may not be retracted immediately on cutting the barb.

The construction and operation of the de vice which produces intermittent motion of the feed-rollers and barb'wrappin g mechanism is as follows: The main power-shaft G, which actuates the knife-lever cam g,is journaled in suitable bearings under the bed-plate of the machine, and terminates in a pinion, g, which meshes into and drives a gear-wheel, 2. The latter gear-wheel is loosely mounted upon its shaft 3 4, so as to rotate thereon without moving the shaft, and is situated within a drum or casing, 5. On the face of this gearwheel, and bordering on its periphery, are two studs, 6 7, one being on each face of the wheel and the situation of each being about diametrically opposite the other.

The shaft on which the gear-wheel 2 is mounted consists of two parts, 3 and 4, which are swivel-jointed, so as to be capable of retating independently of each other and independent-1y of the rotation of the gear-wheel 2.

Keyed to the shaft3 within the drum 5, and adjacent to the gear-wheel 2, is a plate or disk, 8, which is of the same diameter as the internal diameter of the drum. The plate 8 is separated somewhat from the gear-wheel 2 by a sleeve, 10, and is provided with radial slots 11 and 12, which are situate diametrically opposite to each other. In each of these slots is mounted a block or dog, which projects from both sides of the plate. These blocks 13 14 are movable intheir respective slots 11 and 12 toward and away from the axis of the plate,

and their function is to afford means for engaging the stud 6 on the gear-wheel 2 with the plate 8, and thereby communicating the motion of the gear-wheel to the shaft 3, to which the plate is affixed. On the side of the drum 5 next the plate 8 is a fixed annular cam, 15, through which the shaft 3 passes, the cam being concentric with the axis of the shaft. The eccentric part of the cam 15 consists of a depression or recess, 16, preferably situated on its lower side. The cam 15 and slotted plate 8 are so arranged relatively to each other that the movable dogs or blocks 13 and 14 in rotating with the plate bear against the periphery of the cam. ltadially opposite to the recess 16 of the cam 15 is another cam, 1.7, fixed to the shell of the drum 5, and having its eccentricity convex, so as to be a counterpart of the concave eccentricity of the annular cam 15. (See Fig. 4.) On the other side of the plate 8 is a spring-catch, 18, arranged tangentially to the plate 8 and in the path of revolution of the stud of the gear-wheel 2'and of those parts of the

movable dogs

13 and 14 which project to the inner side of the plate 8. On its under side the spring catch has a notch or recess, which is diametrically opposite to the position of the fixed convex cam 17. The spring catch 18 is pivotall y mounted within a recess, 19, at the upper side of the drum 5, and is provided with a suitable spring, 20, which exerts a downward pressure thereon. The motion of the catch is, however, limited by a stop-pin, 21, which confines it within the recess at such a position that its free end is with in the path of revolution of the stud 6, so that when this stud in its course reaches the catch it will raise it upon its axis. Thus constructed,

the operation of this device is as follows: Supposing the stud 6 on the side of the gear-wheel 2 to have engaged the dog 14 in the radial slot 12 of the plate 8, its rotation will move the plate and the shaft 3, to which it is affixed, the dog then rotating in contact with the concentric portion of the annular cam 15. Vhen, however, the dog 14 meets with the convex cam 17, it will be moved in the slot 12 by the action of this cam into the opposite concavity 16 in the annular cam 15, thereby disengaging itself from the moving stud 6. At the same instant the other dog, 13, which has been moving with the plate 8 around the concentric part of the cam 15, having engaged the free end of the spring-catch 18, will raise it and slip into its recess. The spring-arm will then fall and engage the dog 13, thereby holding it and stopping the rotation of the plate 8 instantly. (See Fig. 4.) The stud 6, having been released from the dog 14, will continue to rotate freely without moving the plate 8 during a semi-revolution of the gear-whee1 2t'. 6., until it reaches the free end of the spring-arm 18- when it will raise this arm far enough to release the dog 13 from the recess. It will then engage this dog and will carry it with it in its further rotation, thereby turning the plate 8 and its shaft 3 untilthe dog is pushed into the recess of the cam 15 and released from the stud by this cam. During this time the dog 14 will have been raised in the slot 12 out of therecess 16 by rotation of the plate 8, and will move around the concentric part of the annular cam and in the path of the stud until it reaches the spring-catch 18, which will grasp it and lock the plate 8, as before described. The locking of the one dog and the release of its opposite by the stud 2 are simultaneous, so that rotation of the plate and of its shaft are instantaneously stopped. The stud 2 then continues to revolve freely for another semirevolution until it again raises the catch 18 and engages the dog 14, when it will recommence to move the plate 8. The operation is thus continued indefinitely, as before de scribed. The function of the slotted plate 8 is therefore to act. as lever-arms for communicating motion from the continuously-moving gear-wheel 2to the shaft 3, and the function of the

movable dogs

13 and 14 is to alternately connect and disconnect the plate from the gearwheel at successive semi-revolutions of thelatter,thus causing regularly intermittent periods of rotation and rest of the driven parts. The shaft 3, which is driven by rotation of the slotted plate 8, extends outside of the drum 5 and terminates in a toothed pinion, which meshes into and drives a gear-wheel, 9 Fig. 3. The latter gearing is affixed to a longitudinal shaft, 9', which is mounted in suitable pillow-blocks on the bed-plate of the machine. This shaft at one end is connected with and drives the lower feed-roller, f, of the barbfeeding mechanism; and this, through cogwheels F F, similar to the cogs a a of the strand-wire feed-rollers, drives the upper barbroller, F, Fig. 9. At the other end of the shaft 9 is a pinion, g affixed thereto by means of a spline or feather, g, which enables the pinion-wheel to be moved along the shaft within certain limits. The pinion -wheel 9 meshes into one of the rows of teeth of a crown gearwheel, 9, whose shaft a extends transversely across the machine and drives the lower feedroller, a The side of the crown-whcel g has two concentric series of gear-teeth, g and Fig. 3. By moving the pinion -wheel 9 on the feather 9 until its teeth engage the inner series of teeth on the crown-wheel, it is evident that rotation of the shaft 9 will impart a more rapid rotation to the crown-wheel shaft and to the feed-rollers a a than if the pinion meshes into the outer series of teeth. By thus changing the position of the pinion upon the shaft 9 a faster or slower rotation may be given to the strand-wire feed-rollers, and the length of wire fed during each period of their rotation increased or diminished. It will then be apparent that the feed-rollers a a and Ff are all actuated by the rotation of the intermittently-moving plate 8, that the motion of these parts is synchronous, and that they operate during one half of the rotation of the main power-shaft G and are at rest during the other semi revolution. Vhile the strandwires are passing through the guide-tube c, the barb feed-rollers feed their wire through the slot 0 and between the separated strands. The length of the strands fed relative to the length of the barb-blank may be determined by the relation of the diameters of their feedrollers, and is regulated by changing the gearing of the pinion g from one series of crownwheel gear-teeth to the other. During the feed of the strand-wires and of the barb-wire the barb-wrapping mandrel c is stationary; but immediately on the stoppage of these feeds the mandrel begins to revolve and wraps the barb around the strands. The alternate motion of these parts is secured by a duplication of the intermittent gearing device formerly described, and is illustrated in Fig. 1. The shaft 4, which is swivel-jointed to the end of the shaft 3 within the drum 5, is provided with radially-slotted plate 9, similar in construction to the radially-slotted plate 8, before described, but situate on an opposite side of the revolving gear-wheel 2. The slots of the plate 9 are also provided with dogs or blocks 22 and 23,which are movable radially within the slot and project from both sides of the plate. On the side of the drum is an annular cam, 24, having a recess or concavity similar to the recess 16 of the cam 15, the periphery of which cam is in the path of rotation of the i11- ner end of one of the projections of the dogs, so that as they move around it its concen tric part may keep them out in their slots in the path of the stud 7 on the gear-wheel 2. At the base of the casing and opposite to the recess of the cam 24 is a convex cam, 25, and at the top of the drum,parallel with the springcatch 18, is a spring-catch, 27, having a recess adapted to catch and confine one of the projections of the blocks 22 and 28. The plate9 is held away from the side of the gear-wheel 2 by a sleeve, 26. The parts in this segment of the drum 5 are situated in the same relatlve positions and are in the same horizontal plane as their corresponding partsin the segment first described, the plates 8 and 9 being parallel. The only difference is, that the stud 7 on the one face of the gear-wheel 2, which operates the

dogs

22 and 23, is diametrically opposite to the situation of the stud 6 on the other face of the gear-wheel. The plate 9 is operated intermittently by the stud 7 in the same manner as the plate 8 is operated by the stud 6. The consequence is, that at the instant that the stud Ghas carried its dog 14 into contact with the convex cam 17 and has been disengaged from it, and the plate 8 has been locked by the engaging of the spring-catch 18 with the dog 13, the stud 7 on the opposite I side of the plate will have raised its springcatch 27 and will have released and engaged the confined dog 22. During the next semirevolution of the gear-wheel 2 the stud Gwill move freely without rotating the plate 8 or its shaft 3, while the stud 7 will turn the plate 9 and the shaft 4, to which it is affixed, because of the engagement of the latter stud with the block 22. At the end of this period the block 22, having engaged the convex cam 25,will be forced into the eccentric recess in the annular cam 24, and thus disengaged from the stud 7, while the opposite block,23,having been raised from the recess onto the concentric part of the cam by rotation ofthe plate, will have reached and become locked by the notched spring-arm 27. This will stop the plate 9 and its shaft 4 instantly; but the stud 6, having by this time reached the spring-catch 18, will release and engage the block 14 and recommence to rotate the plate 8 and its shaft 3. On the end of the shaft 4 which projects from the drum 5 is the cog-wheel c, which drives the barb-wrapping mandrel c. It is therefore clear that the continuous rotation of the shaft G, acting on the geanwheel 2,will alternately actuate the mandrel c and both pairs of feed-rollers. The mandrel will be at rest while one semi-revolution ofthe gear-wheel 2 impels the plate 8 and the feed-rollers; but as soon as this semirevolution is complete and the feed-rollers have been stopped the other semi-revolution of the wheel 2 will actuate the plate 9 and the mandrel c.

As shown in the drawings, the gear-wheel c is of three times the circumference of the pinion 0 on the mandrel 0, so that the semi-revolution of the gear-wheel may rotate the mandrel once and a half to produce a barb of the character shown in the drawings, though of course the intermediate gearing may be so timed as to rotate the mandrel a greater or less number of times to produce barb-wire of a different variety. The cam g is adjusted upon the shaft G so that its lateral eccentricity will engage the end of the knife-lever H simultaneously with the commencement of the stud 7 to turn to the plate 9 and revolve the mandrel c, and the eccentricity is made long enough to cause the k nife to hold the barbblank against the inner side of the recess c v until the mandrel has made a one-seventh revolution, as before described.

The operation of twisting the wire strands is performed by the continuous rotation of the rotary spinner D, to the reel E of which the strands are secured. Therevolution of thespinner is preferably in the opposite direction to that of the mandrel c, this being secured by crossing the belt d as shown in the drawings. The function of the reelv E is to wind the twisted and barbed wires upon its drum and to draw them through the machine. Its rotation is influenced by that of the feed-rollers a a so that when they stop the reel stops also. This is done as follows: The front journal-shaft of the rotary spinner D, which is the axis of the belt-wheel d, is hollow. Through ita horizontal shaft, 0 extends to the end'of the machine, where it is provided with a wheel, 6, bearing on the surface of which is a brake, c or similar friction device for retarding its revolution. The other end of the shaft 0 within the periphery of the spinner is provided with a miter-wheel, c, whichgears into a similar pinion-wheel, e, the axis of which is journaled to the sides of the spinher-frame. The latter gearing is connected by suitable gear-wheels, e, to the axis 0 e of the reel E. Ordinarily the brake-wheel e is held stationary by the friction of the brake e Revolution of the spinner D will carry the beveled periphery of the miter wheel 6 around that of the stationary cog e andwill impart a rotary motion to the former Wheel and to its shaft. This also rotates the gearwheels 6, and they in turn revolve the reel E on its axis and cause the twisted strands to be wound thereon. One of the reasons for this arrangement of the reel is to compensate for its increasing diameter as the wire is wound upon it. This increase causes the reel to draw the wire more rapidly from the machine, and if it were driven directly by rotation of the spinner D would break the strip or the machine. When, however, the strain on the twisted strands caused by its increased rapidity of winding has reached a certain point great enough to overcome the resistance of the brake e the wheel 6 will turn with the miter-Wheel 6 upon its axis. In such case it is clear that the miter-wheel e will turn around the periphery of the wheel e Without the resultant rotation of the reel which I have described. When the strain on the strands is slackened by the feed-rollers a a, the wheel 6 and miter-wheel 6 come to rest and the reel commences to revolve freely. The effect of this is to keep-the strands in a constant state of tension and in proper condition for the adjustment of the barbs. Another important result of this arrangement is to stop the reel when the motion of the feed-rollers a a stops.

The stoppage of these rollers is positive, since they are actuated by gearing a a and as the upper feed-roller is pressed upon the lower one their friction will exert a considerable strain on the wire strand. This strain will also be exerted on the reel E, and will cause the frietion-wheel 0 to overcome its brake and turn, thereby stopping the reel until the feed-rollers again begin to move. The pressure of the brake 6 upon the wheel 6 is regulated by a cord, 6 which is connected with the brake, and passes thence to a suitable brake-lever or ratchet.

In Fig. 9 of the drawings I have shown means for directing the course of the barbblank into the wrappingtube. It consists in pivoting the guide-block i by means of a pivot, i, on which it may be moved, so as to give its surface any desired inclination.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination, in a barb-wire machine, of a hollow rotatory wrapper for wrapping the barbs on a cable whose strands are arranged longitudinally within the wrapper, mechanism for feeding the strands through the wrapper, barb-feeding mechanism for feeding the barb-wire into the wrapper and between the strands, and the flexed barb-guide pieces h If, substantially as and for the purposes described.

2. The combination of the rotatory wrapper of a barb-wire machine, having slots for the entrance and exit of the barb-blank, knives for severing said blank after it has been fed into the wrapper, the moving knife arranged to operate transversely to the course of the barb strand and longitudinally with said wrapper for the purpose of cutting, moving, and holding said barb, substantially as and for the purposes described.

3. The combination, with feed-rollers for feeding the barb-wire toward the cablestrands, a knife for severing the same, and a wrapper for securing the barb-wire to the cable-strands, of a guide-block, 2', movable, so as to change its inclination to the horizontal, for the purpose of directing the barbstrand relatively to the wrapper and regulating the length of the point out thereon, substantially as described.

4. The combination, with the feed-rollers of a wire-barbing machine and a shaft for driving the same, of a crown-wheel mounted on said shaft and a pinion movable from one series of teeth on said wheel to another, substantially as and for the purposes described.

5. A rotatory wrapping-tube for barb-wire machine, having a hollow tube for passage of the strand-wires, and axial slots 0 and elongated transverse s'lots 0 in combination with feeding mechanism for causing barb-wire to be fed thereinto, substantially as and for the purposes described.

6. The combination, in a barb-wire machine, of two revoluble shafts, 3 and at, each provided with lever-arms having lugs or blocks capable of motion toward or from the axis of revolution, with an interposed driving-disk, 2, having driving-studs on each side and cams for throwing the lugs or blocks into and out of the path of revolution of the studs, whereby an intermittent rotation is imparted to the shafts, mechanism for feeding the cablestrands, and mechanism for feeding the barbstrand, both of said mechanisms being connected with and actuated by one of said revoluble shafts, and mechanism for wrapping the barb actuated by the other of said shafts, whereby a regularly-intermittent rotation is imparted to each of these parts, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand this 1st day of June, A. D. 1885.

JOHN STUBBE.

V i tncsses:

W. B. Conwru, JNo. K. SMITH.