US718478A - Bending-machine. - Google Patents

Description

PATENTBD JAN. 13, 1903.

J. KRUBGER. BENDING MACHINE. APPLICATION. FILED SEPT. 6, 1902.

3 SHEETS-SHEET 1.

N0 MODEL.

PATENTED JAN. 13,1903.

I KRUEGER. BENDING MACHINE.

APPLICATION FILED- SEPT. 6, 1902- 3 BHEETSSBET 2.

' H0 MODEL.

No. 718,478. PATENTED JAN. 13. 1903 'J. KRUEGER. BENDING MAGHINB.

APPLIOATION FILED SEPT. 6, 1902.

N0 MODEL. v 3 SHEETS-SHEET 3. l

UNTTED STATES PATENT @FFICE.

JOHN KRUEGER, OF MILWAUKEE, WISCONSIN.

BENDING= MACHINE.

SPECIFICATION forming part of Letters Patent No. 718,478, dated January 13, 1903.

Application filed September 6, 1902. Serial No. 122,321. (No model.)

To all whom it near/y concern:

Be it known that I, JOHN KRUEGER, a citizen of the United States,and a resident of Milwaukee, in the county of Milwaukee and State of Wisconsin,have invented certain new and useful Improvements in Bending-Machines; and I dohereby declare that the following is a full, clear, and exact description thereof.

My invention has for its object to facilitate bending of angle-iron toform flanged rings; and it consists in certain peculiarities of construction and combination of parts hereinafter particularly set forth with reference to the accompanying drawings and subsequently claimed.

Figure 1 of the drawings represents a partlysect ional elevation of a machine organized in accordance with my invention to bend angle iron into a ring having an inner flange, this view being indicated by line 1 1 in the fourth figure; Fig. 2, a similar view of a portion of the machine, illustrating the same organized to bend angle-iron into a ring having an outer flange; Fig. 3, a horizontal section view of said machine, this view being indicated by lines 3 3 in the first figure; and Figs. 4 and 5 transverse sectional views of the; aforesaid machine, respectively indicated by lines 4 4 and 5 5 in said first figure.

Referring by letter to the drawings, A indicates the bed-plate, B 0 parallel standards, and D the pillow-block, of a three-roller bending-machine made according to my invention to facilitate the making of flanged rings from angle-iron, said standards being connected by stay-rods b conveniently arranged.

Each of the two parallel lower rollers of the machine is shown as comprising a screwthreaded shaft E, for which standards B C are provided with bearings, a screw threaded sleeve F, keyed on the shaft, a collar G held by a set-screw c in adjusted position on said shaft to oppose one end of the sleeve, other collars H I, sometimes one and sometimes both, keyed on said sleeve, a nut J, run on the aforesaid shaft against the sleeve end farthest from collar G, and another nut K, run on said sleeve against collar I, all of the collars being of the same diameter.

v The upper middle roller of the machine is shown as comprising a screw-threaded shaft L, shouldered collars M N, loose on the shaft, and set-nuts 0, run on said shaft to oppose the outer shoulder ends of the collars. Shaft L is journaled in heads P, having verticallyadjustable shanks Q, and a preferably tapered end of said shaft turns in a block R, suspended from a screw S, that turns in the u per transverse portion of a yoke T, bolted at its ends on the pillow-block 0f the machine. The shanks Q of heads P have their play in the standards of the machine and lower round ends of these shanks are screw-threaded. Engaging the screw-threaded ends of shanks Q are nuts U, that turn in plates at, bolted to lugs e of the machine-standards, and lower plate-opposing flanges f of the nuts prevent them from moving up on said shanks. A bevel gear-wheel V is made fast on each nut U by a set-screw g or otherwise to have its hub rest on the adjacent plate 61, whereby descent of said nut on the shank engaging same is prevented. The machine-standards are provided with bearings h for spindles W, and fast on these spindles are bevel-pinions X and hand-wheels Y, the pinions being in mesh with the bevel gear-wheels aforesaid.

One of the shanks Q is in sections on a pivot t in order that its upper portion may be swung clear of a journal of the roller-shaft L, for which the head of said shank serves as a hearing.

The machine is provided with a main or pulley shaft Z, and by means of a gear-train common in three-roller bending-machines motion is imparted from said shaft to the lower rollers.

When the machine is organized for bending angle-iron into rings having inner flanges, the collar H pertaining to each lower roller is omitted and the collars G I adjusted to provide space on the sleeve F for the horizontal portion of the angle-iron. By adjustment of the set-nuts O of the upper roller the collars M N of this roller are brought in position to catch the vertical portion of the angle-iron between their inner sides, and by manipulation of the screw S and spindlesW said upthereof impinge against said horizontal portion of said angle-iron, vertical adjustment of the aforesaid upper roller being also proper roller is adjusted to have said collars.

portionate to the diameter of the ring that results from an operation of the machine. Either J. or L iron may be bent on the machine and two L-irons placed web to web to form a .L may be bent at the same time, the result being two rings each having an inner flange. To bend angle-iron into rings having outer flanges, collar H is put on sleeve F to abut the inside of collar I and said sleeve and collar G are adjusted with reference to each other to leave an intervening space in which to catch the vertical portion of the angle-iron, the horizontal portion of said angle-iron being supported on the collars G II under the collars M N of the upper roller, adjusted as shown in Fig. 2. A ring having been bent on the machine, the upper roller is adjusted,

to clear said ring and the upper section of the adjustable jointed shank, terminating in a bearing for a journal of the roller-shaft, is swung out, said roller being then supported by the other adjustable bearing and block with which said shaft thereof has engagement.

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

1. A bending-machine having parallel rollers each comprising a shaft in stationary bearings, a collared sleeve and a collar adjustable on the shaft but held to turn therewith; another roller intermediate of those aforesaid on a higher plane and comprising a shaft in vertically-adjustable bearings one of which has a jointed shank, collars loose on the latter shaft and collar-opposing set-nuts adj ustable on the same shaft; a drive-shaft, and a gear-train connecting the drive-shaft and parallel-roller shafts.

2. A bendingmachine having a pair of parallel rollers each comprising a screw-threaded shaft in stationary bearings, a collar adjustable on the shaft but held to turn therewith, a screw-threaded sleeve in key connection with the shaft, two collars one or both of which have key connection with the sleeve, a collar opposing nut on said sleeve, and a sleeve-opposing nut on said shaft; another roller intermediate of those aforesaid on a higher plane and comprising a screw-threaded shaft in vertically-adjustable bearings one of which has a jointed shank, collars loose on the latter shaft and collar-opposing set-nuts adjustable on the same shaft; a drive-shaft, and a gear-train connecting the drive-shaft and parallel-roller shafts.

3. A bending-machine having parallel rollers each comprising a shaft in stationary bearings, a collared sleeve and a collar adjustable on the shaft but held to turn therewith; another roller intermediate of those aforesaid on a higher plane and comprising a shaft in vertically-adjustable bearings one of which has a jointed shank, collars loose on the latter shaft and collar-opposing set-nuts adjustable on the same shaft; a verticallyadjustable block engaged by the end of the middle roller-shaft farthest from the bearing for same that has the jointed shank, a driveshaft, and a gear-train connecting the drive and parallel-roller shafts.

4. A bending-machine having parallel rollers each comprising a shaft in stationary bearings, a collared sleeve and a collar adjustable on the shaft but held to turn therewith; another shaft intermediate of those aforesaid on a higher plane and comprising a shaftin bearings having screw-threaded shanks one of which is jointed, collars loose on the roller, and collar-opposing set-nuts adjustable on the same shaft; nuts held against travel on the bearing-shanks, means for rotating these nuts, a drive-shaft, and a geartrain connecting the drive-shaft and parallelroller shafts.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in the county of Milwaukee and State of W'isconsin, in the presence of two Witnesses.

JOHN KRUEGER.

lVitnesses:

H. G. UNDERwooD, B. 0. ROLOFF.

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