US349722A

US349722A - Vania

Info

Publication number: US349722A
Authority: US
Publication date: 1886-09-28
Anticipated expiration: 1903-09-28

Description

(Novlodel.) 6 Sheets-Sheet 1. -A. 0. KITTRBDCTE 8U F. M. LEAVITT.

1 SHEET METAL SCROLL GUTTER.

N0. 349,722. Patented sept. 28, 1886L Q2 Rw N. P'ETERS. Phowulhugnphur. wnhingmn, n.6.

(No Model.) 6 Sheets-Shet 2. A. 0. KITTREDGE 8v F. M. LEAVITT..

SHEET METAL SCROLL GUTTER.

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6 Sheets-Sheet 3. A. 0. KITTR'EDGE & F. lVI. LBAVITYT. SHEET METAL sGEoLL GUTTER.u

- (No Model.)

JT. am m 6 Sheets-Sheet 4. A. O. KITTREDGE 8u F. lVLLEAVITT.

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SHEET METAL SCROLL GUTTER.

Patented Sept.` Z8, 1886.

(No Model.) y s sheets-sume.

A. 0. KIT'TREDGE 8u P. LEAVITI'.V

SHEET METAL SCROLL GUTTER.

. Patented Sept. 28, 1886.

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(No Modem l s' sheets-.sheen s. A- 0,. KITTRE-DG'B 81; P. M. LEAVITT..

SHEET METAL SCROLL GUTTER.

No. 349,722. Patented Sept. 28, 1886.

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UNITED lSTATES ,I

PATENT OFFICE.

ANSON O. KITTREDGE, OF SLATE HILL, AND FRANK M. LEAVITT, OF BROOK- LYN, NEV YORK, ASSIGNORS TO THE VULOAN COMPANY, OF PENNSYL- VANIA.

SH EET-M ETAL-SC ROLL CUTTER.

SPECIFICATEON forming part of Letters Patent No. 349,722, dated September 28, 1886.

Application filed October 29, 1885. Serial No. 181,311. (No model.)

To all whom ima/y concern,.-

Be it known that we, ANsoN O. KITTREDG'E and FRANK M. LEAVITT, citizens ofthe United States, residing, respectively, in Slate Hill and 5 Brooklyn, counties of Orange and Kings, and State of New York, have invented certain new and useful Improvements in Sheet-Metal Scroll Cutters, fullydescribed and represented in the following specification and the accompanying drawings, forming a part of the same.

The object of this invention is to cut sheet metal?v into forms of irregular shape without first marking such shape thereon. This we effect by suitably connecting the sheet metal with an index which is passed over a stationary pattern, so as `to move the sheet metal in the required path in contact with a vibrating cutter. In such a construction a narrow cutter is used, but requires to be automatically turned in the direction of the required out; and our improvements therefore consist in means for moving the sheet metal in conformity with the path traced by an index upon a given pattern; in means for turning the cutting-edge simultaneously with the said index in the direction of the traced lines; in the means for withdrawing the cutter, while in motion, from the sheet metal, and in the means for varying the rate at which the sheet metal is moved against the Cutter. In our construction the sheet metal is secured to afreely-movable table, to which an index is attached, and the movement of the index over-a drawing or pattern outline serves to move the table and sheet metal in apath identical with that traced by the index. The operator is not required, with this construction, to move the weight of the table, although it is supported upon anti-friction rollers; but the table is propelled by the frictional contact of a roller `pressed upon its suriace in any direction in which the index may be turned, the roller being rotated by automatic mechanism, at a speed controlled by the operator, and the roller-support being turned by a rotary connection with the index, so that the table is fed in the directiou of any curve or line to which the index may be conformed.

The invention also includes certain details of construction for varying and stopping the feed, 5o all'of which will be understood by reference t the annexed drawings, in which- Figure 1 is a side elevation of a machine embodying these improvements, the vparts being shown in section where' hatched, and the support for the nearer end of thepattern-table being omitted from the drawing. Fig. 2 is aplan of the same. Fig. 8 is a side view, on an enlarged scale, of the devices for driving the feed-roller, the bed A and the stand P being shown in section at their centerline, as well 6o as the gear ma, the ring P4, the end of the brace F', and the three chain-wheels F3. Fig. 4 is a front view of the same devices, theparts .hatched being shown in section on line x x in Fig. 3. Fig. 5 is a plan of thebracket in sec- 65 tion on line w w in Fig. 3. Fig. 6 is a top view of the cross-head. Fig. 7 is a side view of the roll-carrier with the propellers and the feedroller removed. Fig. Sis a view of the under side of the arch, showing the lower en d of the carrier, the ring attached thereto, and the anti-friction rolls which hold it in place. Fig. 9 is a section of the roll-carrier on line y y in Figs. 3 and 4. Fig. 10 is a plan of the front end of the arch, showing the mechanism for adjusting thel vibrating cutter, one side of the spindle-bearing being broken away to show the swivel-collar beneath. Fig. 11 is asection of the same mechanism on line zz in Fig.

10, the cutter spindle and holder not being in section, the lower cutter and its holder loeing also displaced. Fig. 12 is a plan, and Fig. 13 an end, view ofthe holder for the lower cutter; and Fig. let is a'front elevation of the machine. 8 The frame of the machine is shown formed in one piece of a bed, A, neck A', and arch A2. B is a pattern-table affixed to the front end -of the arch to sustain a drawing or pattern.

C is an index carried at the lower end of a spindle, C', which is fitted to a goose-neck bracket, C2. The foot of this bracket is secured to a feeding-table, D, from which project clamps O, to grasp the edges of the sheet metal, (shown at O in Fig. 2.) The table is movable beneath the arch upon two sets of antilfriction wheels and tracks arranged at right angles to one another. Each set of wheels is xed 'to a square frame formed ofthe axles D3 and tie-bars D4. The lower set of wheels, D2, rest-upon rails E, roo formed on the bed A, and carry a rectangular frame formed of two pairs of rails, F/ and E2,

the former being tted to the wheels D2, and the latter sustaining the upper wheels, D', upon which rest rails E3, affixed to the table D.

Fig. 2 shows a pattern, B', laid upon the table B, with the center of the spindle C on a line with its left-hand end; and the spindlebracket C2 being rigidly affixed to the feedingtable, it is obvious that the movements of the latter must correspond in all respects with the movements of the index C over the pattern.

The feeding-table is propelled by a roller, G, pressed upon its surface and rotated automatically at the pleasure of the operator.V The roller-carrier P' is mounted in the center of the arch over the table to sustain the opposite ends of the roller-axle, and is lattached to a vertical spindle, J', which is connected by any suitable means with the index-spindle O', so as to revolve once for each rotation of the latter. The front end of the arch is formed with bearings a', to which is fitted a vertical spindle, a, carrying a holder, a2, and the sheetmetal cutter d. Above the arch the spindle ct is connected with a spindle, b, by means of cross-bars b' and pins b2, the pins being fixed in one of the cross-bars and fitted looselyin holes in the other, so as to permit a reciprocating movement to the spindle awhile it is rotated by. the spindle b. The spindle b is held concentrically above the cutter-spindle by a standard, lil, and is,like the spindle J', rotated by a con nection tothe index-spindle. The point of the index is concentric With its` spindle, and it is formed with a sidewise projection or heel, c, to guide the operator in applying the index to the pattern, and a handwvheel, C3, is affixed to the index-spindle to turn the heel of the index into coincidence with the lines and curves of the pattern.

The rotary connection between the spindles of the index, the cutter, and the feed-roller G is formed by means of chains applied to wheels of equal diameters upon all the spindles, and a jointed connection is formed between the spindles C' and J', to compensate for the various movements of the index over the pattern. fFor this purpose links F F' are jointed together by a pin, K, and their outer ends pivoted, respectively, upon the two spindles. Two chain-wheels, F, are affixed together to turn loosely upon the pin K, and three chainwheels, F, are attached to .the top of the spindle J'. Wheels F5 and F* are attached to the tops of the spindles b and C', and the motion is communicated from one to the other by three chains, I, I', and I2, connecting the different centers, as shown in Fig. 2. Tne third wheel upon the spindle J is employed to transmit a coincident rotary motion to a lower shearblade, e, against which the cutter d is arranged to operate. This cutter (shown in detail in Figs. 1l to 13) is mounted upon the top of a spindle, L, vertically concentric with the cutter-spindle, and sustained in bearings L,which project from the front of the bed A.

The cutters are shown herein as shear-blades, the lower one having a level surface, over which the sheet metal is lreadily moved, and the upper one having an inclined edge, to lap upon the other, like other shears. Each blade is clamped in a holder by a gib, e', and bolt e2, and the lower holder is formed with a foot,f, fitted to a cross-piece, f', upon the head of the spindle L. Slotsf2 are formed in the feet of this holder, as shown in Fig. 12, so that the lower blade may be adj usted sidewise to secure a close contact with the face of the cutter d.

The spindle L is rotated by the intervention of a shaft, M, mounted upon the machine in the rear of the table, and provided with chainwheels N and- N' at its top and bottom. -A chain-wheel, L3, is yalso applied to the lower end of the spindle L, and chains Ll and N'Z serve to connect the shaft M respectively with the spindle J' and the spindle L.

As stated above, the movement of the index in following` the lines of the pattern is effected by its connection with the feedingtable D, which is propelled by the roller G in any course in which the roller may be directed. It will therefore be understood that when the roller is in motion the feeding-table and the index move therewith, and the operator is required merely to turn the heel of the gage successively in the same directionas the lines over which the gage is passing. Such turning is effected by the hand-wheel G3, and operates through the various chain-wheels and chains to turn the cutters and the feeding-roller simultaneously in the same direction, and to cut in the sheet metal clamped to the feedingtable a line identical with the pattern. The cutter d operates by a vertical vibration, which vis effected by a rapidly-revolving crank, n,

that the operator may separate the cutters to introduce the metal when desired, the rocker being pivoted at its middle to a hanger, g, which is hung at its upper end upon an eccentric, g', by which it is adjustable vertically while the cutter is in operation. The' eccentric is fixed to a shaft, g, which is rotated by an arm, g3, and connecting-rod g, actuated by a treadle, T. Shafts It and h' are fitted to the neck A', to carry crank-arms for transmitting the motion of the treadle to the rod g4, and the rear end of the rod is fitted to a pin sliding in a crank, t', to and from the center of the shaft h', so as to receive a greater orless movement from its oscillations. A bell-crank, j, (hung on the shaft h,) and a link, 7c, and arm Z transmit the motion from the treadle to the shaft h'.

IOO

IIO

To shift the pin 0 to any point inthe crank A pin, k', upon the bell-cranky' serves to simultaneously draw downward a connectingrod, which throws the feeding mechanism into operation, and the movement of the treadle thus serves to start the feed at the same time that the cutter is forced into the metal by themovement ofthe hanger g. The feeding mechanism consists in a friction-plate, r, and friction-disks 8,-which are mounted upon spindles s', pressed toward the plate by springs s2. The spindles are mounted in bearings s3 at opposite edges of the plate r, and are rotated in opposite directions by their pulleys s, and the plate is mounted upon a shaft, 1", hung in bearings r'l, and provided with aspring, r, to hold it normally in the centers of the disks s, as it is represented in the drawings. To secure this effect the spring is applied to the shaft between two collars, with each of its ends abutting upon aloose washer, ri, placed inside the xed collar. Braces T5 are shown in section in Fig. l,and in plan in Fig. 2, fixed upon the arch A2, and are formed with apertures which permit the passage of the collars, but resist the movement of either' washer. It is obvious that a longitudinal motion of the shaft fr would move lhe plaie from the center of the disks s, which would then operate to rotate the plate at a velocity corresponding with their point ,of contact. Such movement would press one of the collars and washers just described against the opposite washer, and thuscompress the spring and induce the reaction required to restore the plate toits central position. Such end movement of the shaft is effected by a connection with thepin k', which is actuated by the treadle, an arbor, Z, being mounted upon the neck A over the said pin, and provided with an arm, Z2, coupled to the shaft by a link, Z3, and swivel Z*. The descent of the treadle is intended to actuate the shaft r in either direction, for which purpose the arbor Zl is provided with a cross-bar, Z5, having a pin, Z6, at each end. A reversing yoke, Z7, provided with opposed hooks'Z8 at its upper end, is linked to the pin k', and a rod, Z9, connects the yoke with ahandle, Z1", adjacent to the pattern-table, so that the operator may throw one of the hooksinto contact with either of the pins Z6 at pleasure. When hooked to the rear pin, as shown in Fig. '1, the depression ofthe treadle operates to draw the shaft r backward,and to rotate the plate r in the direction of the arrow r6. When the A yoke is hooked to the front pin,the depression of the treadle pushes the shaft r forward,and produces a rotation of the plate r in the opposite direction. A brake-wheel, 85, having a convex rim, is secured to the shaft r', and is clamped, when the plater is in its neutral position, by two pressers, s, affixed to the ends of .levers ss. These levers are pivoted at the opposite side of the plate from the wheel S5, so as to cross the shafts s', at which crossing the shafts are provided with collars s", arranged to bear against projections e7 on the levers. Such clamping action is intended to check the rotation of the plate r, so as to instantly stop the feed when the plate is shifted to the center of the disks. The pressers scare made round and pivoted upon the ends of the levers, and are automatically pressed toward the brake-wheel by the springs s2, operating through the collars s. The inward movement of the spindles s is limited by the contact of the disks with the plate r, and the pressers 'are so proportioned thatthe brake-wheel, when the plate is moved to its neutralposition,as shown in Fig. 2, operates to slightly separate them, thus pushing the levers si apart against the resistance of the springs s. Such a brake is required to overcome the momentum of the feeding-table and its driving apparatus when propelled in either direction by the rotation of the plate r, the shaft r being connected with the feeding-roller through Aacombination of gearing. (Shown in Figs. 3 and 4.) In these views the roller-carrier P and the supports of its spindle J are shown upon a larger scale and partly in section.

P is a stand located upon the arch A2 over the roller-carrier P, and is provided at its upper end with a bearing, P?, for the spindle J 'lhe carrier isvformed as an oblong hollow casting, (shown detached in Fig. 7,) the feed-roller being mounted upon an axle, p, inbearingsp in its lower end, and rotated by two verticallyreciprocating propellers, m, which act upon two cranks, p2, attached to the end of the roller-axle. These cranks are set quartering, as shown in` Figs. 3 and 4, and the propellers receive asuitable alternating motion from two crank-pins, m', which are rotated in coincidence with the cranks p2. These crankpins are fixed upon gear-wheels m2 and m3, which are pivoted within thestandard P, and are rotated by a pinion, mt, upon the shaft r, which is extended through bearings m5, formed on the standard.A The spindle J. is supported by the bearing P2 vertically in front of the two gearwheels, and is provided with two sliding cross-heads, m6 and mi, each cross-head having a transverse groove, m8, to n't a block upon one of the crank-pins, and being guided vertically by slides P3. The spindle J is formed on each side with a groove, as shown in Fig. 7, extending from itslower end to one of the cross-heads, anda sliding bar, t, is fitted to each groove and attached at its opposite ends to a cross-head and a propeller, as shown in Fig. 4. Each bar is attached to its propeller by a stud, t', (shown in Figs. 4and 9,) which projects through a slot, t2,in the carrier P, and each bar is attached to its cross-head by a collar, Z3, swiveled in the end of the cross-head by a bolted cap t4. The spindle J is secured rigidly in the top of the carrier, as by pin J2, so as to turn the carrier when rotated by the chain-wheel F3, and the cross-heads slide up and down freely upon it when driven by the crank-pins m, thus moving the bars t and the propellersm in whatever position the carrier may be turned. The cranks upon the carrier-roll and the crank-pins upon the gears being in both cases set at ninety degrees from one another, the propellers serve effectually t0 continuously rotate `thefeeding-roller when ICO the pinion'm4 is rotated by the friction feeding devices. As it has already been shown how these feeding devices are under thev control of thetreadle, so that the operator may at pleasure rotate the plate r in either direction, or leave it normally at rest in the center of the disks s, it will be obvious that the direction and speed of the feeding-roller s rotations may be effectually governed while the cutters are operating uponv a sheet of metal. The feeding-roller is pressed toward the surface of the table `D by a set-- screw, u, applied to the top of the spindle J; but a yielding pressure may be employed by applying a spring or weight instead of a set-` screw. The carrier P is provided at its lower` end with a guide-ring, 1?", secured thereto by bolts u', and the ring is steadied by frictionrollers u2, bolted upon thebottom of the arch A2 concentrically with the axis of the spindle J as shown in Fig. 8. The sheet metal is not in-v tended to lie upon the feeding-table, but to be'A held by its edges or corners,so as to move freelyl over the cutter e. The clamps O are therefore projected from the edge of the table, to which they are movably secured by shoes 0'; and bolts v, fitted to a T- slot iu the edge of the table. The clamps are hinged to the shoes atg' o', and are each provided with a groove upon its? up per surface, to which is fitted a movable dog!y provided with a jaw, '02, and a clamping-screw:

3 One clamp projects from the table at cachi side of the cutters, so that the sheet metal mayv extend between them and beneath the cutter; d, and by such dogs and by the hinging of the'v clamps to the table apiece of sheet metal of any form may be grasped by any of its edges and participate in the movements imparted to the table by the feeding-roller.

The operation of cutting abracket-such as is shown upon the patteintable-will be described, and will illustrate the action of the machine in cutting any other form. tern is rigidly secured to the table B, and to bring the index C over the end of the bracket in the position shown in Fig. 2 it is necessary to actuate the feed without causing the cutters to penetrate the sheet metal. This is effected by pushing the handle o* and drawing the pin 0 to the center of the crank i, thus rotating the eccentric g and raising the collar n3 and cutter d. The movement of the treadle then has no effect upon the eccentric, and the treadle may therefore be depressed to draw down the yoke Z2 and to move the.plate r from the center of the friction-disks in the required direction. The withdrawal of the Wheel S5 from the pressers s permits the springs sl to force the disks against the plate r, and the gearing in the standard 4P and carrier P then operates to rotate the feeding-roller and propel the table. The heel of the index c being turned in the direction that it is desired to move the gage over the pattern, the roller immediately drives the table and the gage in that direction, and when the gage has reached the edge of the pattern, as indicated in Fig. 2, the foot may be released from the 'just the index.

The pattreadle, which is elevated by the action of the spring r3, and the feed is immediately stopped by the movement of the friction-plate to its neutral position and the contact of the brakewheel with the pressers s6. The clamps are then adj usted to hold the sheet metal,with one end adjacent to the cutters, in the same relation that the pattern bears to the index. The operator then pulls the handle o4 and forces the pin o outward in the crank i, thus rotating the eccentric g and lowering the center of the rocker u and the collar n3 to force the cutters into contact, as shown in Fig. 11. The pulley g5 upon the crank-shaft g2 is provided with a continuously-running belt, so as to vibrate the cutter 0l a constant amount,which is not varied or affected by the movement of such cutter' toward the cutter e. The pattern shown upon the table has straight parallel ends, and the cutters,when brought into action,therefore cut the metal on a line with one of such ends, and the heel of the index being turned toward the other end of such line the feed may be actuated to cut the line by depressing the treadle to rotate the plate r in the proper direction. When the point of the-index has reached the end of such line, the feed would be stopped to permit the operator to turn the index (by means of the hand-wheel G3) at the proper angle to cut the next line of the pattern, and similarly, at any angle in the pattern, the feed may be arrested at thev angle toproperly ad- When the feed is started to cut a curve, the operator turns the index-spindle continuously, so as to conform the heel of theindex to the varying direction of the curve, which may thus be completed without interruption. The position of the pin o in the crank 'l determines the extent to which the eccentric g is rotated and the cutter d moved downward, and the operator may therefore, when cutting curves, secure but a small lap of the cutters and sever the metal by a succession of very short cuts, while a longer-cut may be secured by forcing the cutter d farther down in cutting straight lines, so as to cut such lines more rapidly. Itis obvious that when the pin o is at the end of the arm the eccentric g is affected by each movement of the treadle, and the cutter is then automatically withdrawn from the metal whenever the treadle is raised to stop the feed. The cutters are thus freed from the lnetal, so that they may be readily turned by the chainwheel F5 in the direction of a new line, as in forming angles in the manner described above. The spring r3 has been referred to as not only holding the plate rin a neutral position, but as operating to raise the treadle into the position shown in Fig. l; but the treadle is in practice made with a counter-balance to raise it to such a position, although the same is not shown in the drawings,to avoid obscuring the other parts. p

We have' heretofore employed cranks in place of the chain-wheels, with two links or connections to each from various points in the series, sol as to effect the required rotary mo- IOC 349,722 y vt tion by rigid connections, but have exhibited chains herein as better adapted to illustrate the rotary motion desired. Y

From the above description it will be seen that one of the essential features of our invention is a construction for separating .the cutters suddenly at the pleasure of the operator, while the machine is running, so as to stop the cut exactly at a given point or angle. To effect 'such separation it is obviously immaterial which of the cutters is retracted from the other, as the upper cutter may be vibrated in a constantposition, and the opposed cutter belowered by the action of a treadle, when it is required to stop the cutting action.

Another essential feature of the invention is the means to avoid turning` the sheet metal while feeding it toward the cutter, which is effected by the mounting of a vibrating cutter so as to be turned in the direction of different lines and curves upon the sheet metal.

thus turned in different positions, and to be opened to insert the sheet metal before commencing the cut, a great deal of scroll-workv the improvements specified we claim the right to use a cutter adjustable in vertical planes,

and to feed the sheet metal thereto by laying;

the same upon a stationary table and pushing it toward the cutting-edge by hand. In such case, however, the sheet metal would require to be plainly marked by scribing the needful lines there-on from a suitable profilepattern, which would necessitate the possessionor preparation of such a profile-pattern before the Work could be commenced; but by the use of a suitable feeding mechanism as shown herein, and the connection of an index with the sheet of metal, as described, we are enabled to dispense entirely with profile-patterns fitted to transfer by scribing, and may use any drawing or sketch adapted to lie upon the pattern-table, and to guide the operator in controlling the movements of the index.

By the use of the automatic feed,which propels the feeding-table as long as the treadle is depressed, and at a rate of speed proportional to such depression, s uch control is effected by the mere turning of the index successively in the direction of the various lines of the pattern, the feeding movement being continued through the entire operation at rates of speed proportioned to the straightness of the lines cut, or interrupted at intervals, if necessary, to turn the feeding-roller and cutters at any abrupt corner or angle in the lines of the pattern.

It is obvious that our invention may be applied to the cutting of leather, pasteboard, and other substances, and we have not claimed herein a pair of cutters one of which is vi- It is' also obvious that with a cutter mounted to beV brated against the other, for two reasons: First, because such combination is not new, and, secondly, because itis notabsolutely essential to the operation of our invention.

It is apparent that a narrow steel cutter not operating as a shears, but vibrated in contact with a flat surface of brass or rawhide, is adapted to cut a great many materials other than sheet metal. We do not therefore limit ourselves exclusively to the cutting of sheet metal with our appliances, as the means which welhave described for feeding the material automatically to the cutter and for guiding it in conformity with a given pattern would operate the same, whatever the construction of the cutter may be or the material submitted to it.

We havenot claimed herein the construct` ive features of this machine which adapt it 8'5 for use without an automatic feed, but reserve the right to claim in a separate application, to be pending herewith, the combination of the vibrating cutter with an arched frame, the means for moving one cutter to and from the other by a treadle-connection extended beyond the arch A2, the means for varying the throw of the cutter, and other constructive features shown, but not claimed, herein.

We are aware that a pair of shearing-blades have been mounted in opposition upon rotatable carriers, and that in such construction a hydraulic cylinder has been used to actuate the cuttingblade. In such construction, however, no mechanism has been applied to the separate tool-carriers to rotate them simultaneously when separated, as in our invention, nor has any mechanism been provided to simultaneously reciprocate and rotate the shearing-cutters While in operation, or while separated, as described herein. Our improvements, therefore, adapt a reciprocating cutter to be operated rapidly in the direction of the various lines and curves required in the manufacture of cornices and other sheetmetal work.

Having thus distinguished our invention from others, what we claim herein isl. The combination, with the opposed cutters of a sheet-metal-cutting machine, of means for reciprocating one of them and means for turning them simultaneously while recipro' eating-in the direction of different lines or curves upon the sheet metal, substantially as herein set forth.

2. In a sheet-metalcutting machine, the combination, with a pair of cutters operating by shearing the sheet metal between them, of means for reciprocating one of the cutters, means for separating the cutters while reciprocating to introduce the sheet metal, and means for rotating the cutters simultaneously in relation to the sheet metal, substantially as shown vand described.

3. In a sheet-metalcutting machine, the combination, with a critter and means for rotating it in relation to the sheet metal, of means IOO adapted to grasp the sheet metal and to feed it toward such rotatable cutter, substantially as herein set forth.

4. In a sheet-metal cutting machine, the combination, with acutter and means for rotating it in relation to the sheet metal, of means to grasp the sheet metal and move it toward the cutter and means for directing such movement in the line of the cutting-edge when the latter is turned in relation to the sheet metal, substantially as herein set forth.

5. In a sheetmetalcutting machine, the combination, with a cutter, of a spindle adapted to turn the cutting-edge in relation to the sheet metal, an index mounted upon a spindle and provided with means for turning it by` hand, and means for connecting the index and cutter spindles for rotating` them simultaneously, substantially as herein set forth.

6. In a sheet-metal-cutting machine, the combination, with a cutter, of a movable table provided with means to grasp the sheet metal and hold it to the cutter and a support upon the table to carry a rotary index, an index mounted in said support, and means for rotating the index'and cutter simultaneously, substantially as herein set forth.

7. In a sheet-metal-cntting machine, the combination, with a cutter, of a movable table provided with means to grasp the sheet metal and hold it to the cutter and av support upon the table to carry a rotary index, an index mounted in said support, t-he index having a concentric point and a heel or projection at one side of the saine, for the purpose set forth, and means for rotating the index and the cntters simultaneously, substantially as herein set forth.

8. In a sheetmetalcutting machine, the combination, with a cutter, of a movable table provided with means to grasp the sheet metal, a rotary index carried by said table, and a rotating feeding-roller pressed upon the surface of the table, and means for turning the index, the cutter, and the feeding-roller in the same directionA relative to the sheet metal, substantially as herein set forth.

- 9. In a sheet-metal-cutting machine, the combination, with a cutter, of a movable table provided with means to grasp the sheet metal, a rotary index carried by said table, a rotating feeding-rollerpressed upon the surface of the table, means for turning the index, the cutter, and the feeding-roller in the same directiomand means for varying the speed of the feeding-rollers rotations, substantially as herein set forth.

10. In a sheet-metal-cutting machine, the combination, with a cutter and means for turning it in relation to the sheet metal, of a movable table provided with means to grasp the sheet metal, a rotatable index carried by said table, a rotating feeding-roller pressed upon the surface of the table, means for turning the index, the cutter, and the feeding-roller in the same direction, means for varying the speed of the feeding-rollers rotations, and means for reversing the direction of the rollers motion, substantially as herein .set forth.

1l. In a sheet-metal-cutting machine, the combination, with the freely-movable table D, of thefeeding-roller G, adapted to move the table by frictional contact therewith, the carrier P', the shaft J', the cranks p2, attached to the roller-axle, the propellers m, actuated by bars t,inserted in grooves in the shaft J, and

tached to the bars by collars t3 and actuated by crank-pins m, as and for the purpose set forth.

12. In a sheet-metal-cutting machine, the combination, with the movable table D, the feed-roller G, the carrier P', the shaft J', crossheads m and m7, and means, substantially as described, for transmitting a crank motion from the cross-heads to the feeding-roller, of the gear-Wheels m2 and m3, provided with the crank-pins m, for actuatingv the cross-heads, and feeding mechanism adapted to rotate the said gears, and provided with means for varying the speed of such rotations and stopping the same at pleasure, substantially as herein set forth.

13. In a sheet-metal-cutting machine, the feeding mechanism for producing and conttolling the rotations transmitted to the feeding-roller G, consisting in the revolving feeding-disks s, a friction-plate, fr, mounted upon a shaft, r', with the brake wheel 85, a spring, r3, and braces ri", operating therewith to hold the plate r normally in the centers of the disks s, a treadle connected with means for moving vided with pressers s6, and pressed toward the brake-Wheel by springs, substantially as and for the purpose set forth.

14. In a sheet-metal-cutting machine, the combination, with a frame comprising a bed, A, neck A', and arch A2, the tracks E upon the bed, a table, D, movable upon two sets of wheels, and intermediate rails, E and E2, as described, of the spindles a and L, carrying the cutters cl ande, respectively,'upon the arch A2 pattern-table, B, supported beneath the index, means for vibrating one of the cutters, means for separating the cutters to introduce the l[sheet metal, and a feeding-roller arranged and operated by frictional contact with the table D, substantially as and for the purpose set forth.

In testimony whereof we have hereunto set witnesses.

ANsoN o. KITTREDGE. FRANK M. LnAvrr'r.

Witnesses:

WILLIAM SMITH,

THos. S. CRANE.

the shaft r longitudinally, and levers S7, proand bed A, an index affixed to the table- D, a

our hands in the presence of two ,subscribing cross-heads m and m7, fitted to the shaft and at- IOC IIO

IIS.