US397793A - Machine for bending and coiling pipe - Google Patents

Description

Nmdel" H; E'. FOW'LBR.

MACHINE FOR BBNDING AND COILING PIPE. No. 397,793. i Patented Feb. 1 2, 18891 nuite? l 1 33 9 HIIIIIIIHIIIIHIHHIINH" HIIIIIHIIIIIIIII IH l W 26 34' :mmmmrmmn mnu f Km mumumumu Wi' {Meow/y, Summum drive-shaft 3.

UNrTnn STATES PATENT CFFicE.

HERBERT E. FOVLER, OF NEV HAVEN, CONNECTICUT.

MACHINE FOR BNDING AND COILING PIPE.

SPECIFCATION forming part of Letters Patent No. 397,793, dated February 12, 1889.

Application filed June 20, 1888. Serial No. 277,659. (No model.)

To all whom it may concern:

Be it known that l, HERBERT E. FOWLER, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Machines for Bending and Ceiling Pipe; and I Clo-.hereby declare the following te be a full, clear, and exact description of the in vention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to machines for bend'- ing and ceiling pipe; and -it consists in the improved construction and arrangement or combination of parts hereinafter fully disclosed in the description, drawings, and claims.

The objects of my invention are, first, te provide a machine for bending and ceiling pipe with a bending-roller which will bear against the side of the pipe and bend it immediately after it leaves the feed-rollers; second, to form one of the feed-rollers'of a pipebending machine with a deep groove in the bottom of a shallow, partly-cylindrical, and circumferential. groove, and to provide a narrow bending-roller which will project with its periphery into said deep groove; third, to journal said bending-roller upon an adjustable slide for adjusting it to bend coils of varying diameter, and, fourth, to journal said bending-roller upon a block or frame which is provided with means for laterally adjusting it, and to support said bleek or frame upon a slide provided with means for adjusting it toward and from the feed-rollers.

The construction of the machine by which I accomplish these objects is shown in the accompanying drawings, forming part of this specification, and in which the same reference-numerals indicate the same parts.

Figure l represents a top plan view of my improved machine for bending and ceiling pipe, the coiled pipe being indicated by dotted lines; Fig. 2, a vertical section on the line x x of Fig. l, and Fig. 3 a vertical section on the line y y of Fig. l.

In the drawings, the numeral l indicates the machine table or frame, which is provided upon its under side with bearings 2 for the Said drive-shaft 3 is provided with a suitable drive-pulley, 4, at its outer end, and at its inner end with a worm, 5,'

end', against which the inner end of a screw,

l1, (which tits and turns in a corresponding perforation, l2, in a lip, 13, upon the edge of the machine frame or table, and is provided with a suitable hand-wheel, 14, at its outer end,) may bear. A shaft or spindle, l5, is journaled in a bearing, 16, in the inner end of said slide or block, and has a cog-wheel, 17, upon its lower end, which meshes with a I cog-wheel, 18, upon the shaft or spindle 7 below said table or frame, but above the wormwheel upon said shaft. A feed-roller, 19, is removably secured upon said shaft or spindle 7 above the table or frame, and said roller` is formed with a slightly less than semi-cylindrical circumferential groove, 20. Afeed-roller, 2l, is removably secured upon the shaft or spindle l5 in the adjustable slide or block 8, and isformed with a slightly less than semi-cylindrical circumferential groove, 22, and with a still deeper narrow groove, 23, in the bottom of said groove A guide-roller, 24, is journaled upon the inachine frame or table with its periphery in a line with said deeply-grooved feed-roller 2l and in a line at right angles to a line drawn between the centers of the two feed-rollers 19 and 2l.

The machine frame er table is formed with a diagonal slot,25, which extends from one corner of said table and toward the space between the feed-rollers, and a slide or block, 26, fits and slides in said slot and has an upwardly-proj ecting lip, 27, at its outer end. The

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deep groove in the feed-roller 2l, and is formed with a circumferential partly-cylindrical groove, 3l, which is Vformed with the same radius as the grooves of the feed-rollers, so that said groove 3l may form a. continuation ot' the groove 22 in said feed-rollerQl, as will be seen by reference to Fig. 2 of the drawings. An upwardily-projecting lip, B5, is formed atthe edge and ncarthe outer end ot' the slot 25, and a` screw, 3G, provided with a hand-wheel or disk, 37, is fitted in a threaded perforation, 3S, in said lip and bears with its inner end against the side edge ot the outer end or portion of said pivoted block or plate Si).

An oblique guide, 39, or a guideeroller or similar device is adjustably secured upon the machine frame ortable at the forward or feed 5 side of the feed-roller l0 and serves to guide the coil as it is formed by the rollers above the same.

In practice feed and guide rollers of the appropriate diameter for the coils to be made, and having their ci-rcum-ferential grooves of a size to snugly lit the pipe to be bent, are adjusted in their proper places, the adjustable slide for the deeply-grooved feed-roller 2l and the long cogs of the gear-wheels upon the roller-shafts or spindles admitting of feedrollers of varying diameters being' used, and a bending-roller of'a suitable diameter and with a circumferential groove correspondin to the grooves in the feed and guide rollers is adjusted. The pipe `is now inserted between the feed rollers, and the narrow bending-v roller will, by bearing against one side ol' said pipe and, by being forced against it by the screw 98, bend it, and, when the desired bend or diameter of coil has been attained, by adjusting said bending-roller by means of the screws 28 and 36 the pipe may be fed through the rollers andv coiled without any stoppage or further adjustment, the guide 39 guiding the coils above the feed-rollers and preventing their beingl fouled or obstructed by the pipe which is fed into the machine.

It will be obvious that the diameter of the coils is adjusted by the adjustment of the bending-roller, and that the diameter will be increased by tilting said roller out from the feed-rollers by means of the laterally-tilting lframe and its side screw, 36, and by drawing said roller away by the slide and its screw 28. When a cylindrical coil is formed, the bend ingeroller remains in its adjusted position; but when a conical coil is to be formed the bendingfroller is first gradually fed toward the feed-rollers and pipe by means ot' the slide and the end screw, 2S, forming the larger coils, and thereupon, when. said slidel has arrived at the inner end of its slot, fed into the deep groove in the feed-roller and still closer to said pipe, forming the smaller coils by means of the tilting frame or plate and the side screw, 36.

It will be obvious that, on account ot' the bendi u g-rollcr proj ectin into the'deep groove of the feed-roller, said roller will bear against the pipe in the space between the feed-rollers and at a point very close to the point at which the d`eeply-groove fl feerl-roller bears against it, so that the pipe will be gradually and evcnlybent and fully supported while it is being bent, said leed-roller and bemlingroller following the contour ot the opposite feed-roller for a portion of its periphery, and thus forming a perfect support for the pipe while it is being bent and causing a smooth and even curve without breaks and straight or uneven portions.

Instead of havingthe bending-roller to project into a groove in the feed-roller, said roller maybe so shaped as to project into the space between the t'eed -rollers in various other ways, or it maybe substituted by one or more` smaller shaping or bending rollers or a sinnlar shaping or bending device without departing from the spirit of my invention, and one-form of such arrangement of shaping or bending rollers forms the sul'Jject-matter ot another application for Letters Patent, which is liled together with this application.

Having thus fully described the construction and arrangement or combination ot' my improved machine for bending and coiling pipe, with its operation and advantages, what l claim as new is l. In a machine for bending and coiling pipe, thc combination, with a groovcd feed-roll, ot' a. feed-roll having a groove ot' greater depth and a bending and shaping roll having its periphery extending i nto the periphery oi' said deeply-grooved roll, substantially as specified.

In a machine for bending and coiling pipe, the combination, with a grooved feed-roll, of a feed-roll having a groove of greater depth and an adjustably arranged bending and shaping roll having its periphery extending into the periphery oi' said deeplygrooved.feedroll, substantially as specified.

3. Ina machine forben ding and ceiling pipe, the combination, with a pair of. feed-rollers', of a bending-roller which projects into the space between said feed-rollers` to a point within the periphery of one of them, and' a slide which forms a bearing for saidA roller and is provided with a feed-screw for adjusting it toward and from said feedrollers, subn stantially as described.

l. ln a machine for bending and ceiling pipe, the combination, with a pair of feedrollers, of a slide provided with av screw for adjusting itV toward and from the space between said feed-rollers, a plate or frame pivoted upon said slide, a screw for tilting, or laterally adj usting said pivoted plate or'i'rame, anda bending-rollerwhich is j ournaled upon the inner end of said plate or frame, and, together with one ot' said feed-rollers, forces the pipe to follow the contour ot' the opposite feed-roller for a portion of its periphery, substantially as described.

5. In a. machine for bending and ceiling pipe, the combination ol' ai feed-roller, an op positev feed-roller lormedwith a deep groove IOO IIO

in its periphery, and a bending-roller which is journaled to project with its edge into the deep groove of said feed-roller, and, together with said roller7 to force the pipe to follow the contour oi' said other feed-roller for a portion of its periphery,'substantially as described.

o'. In a machine ij'or bending and ceiling pipe, the combination of a feed-roller formed with a circumferential groove, a feed-roller 'formed with a circumferential groove and a deeper groove in the bottom of said groove, and a narrow bending-roller which is journaled to project into said deeper groove and formed with a circumferential groove of the same diameter as the grooves in said lfeedrollers, and which, together with said deeplygroovcd roller, forces the pipe to follow the contour of the opposite feed-roller for a portion of its periphery, substantially as described.

7. In a machine for bending and ceiling pipe, the combination of a circumferentiallygrooved feed-roller, an opposite feed-roller formed with a circumferential groove and with a deep groove in the bottom of said circumferential groove, a circumferentiallygroovcd bending-roller which is jonrnaled to project into said deep groove, and, together with said deeply-groovcd feed-roller, to force the pipe to follow the contour of the opposite feed-roller for a portion of its periphery, and means for adjusting said bending-roller to project more or less into said deeply-groovcd roller and toward said opposite feed-roller, substantially as described.

S. In a machine for bending' and ceiling pipe, the combination of a circumferentiallythe inner end of said slide toproject into the l deep groove of said feed-roller, and, together with said feed-roller, to force the pipe to follow the centen r ofthe opposite feed-roller for a portion o1' its periphery, substantially as described.

9. In a machine for bending and coiling pipe, the combination of the machine frame or table formed with the diagonal slot 25, the circumferentially-grooved feed-roller 19, the opposite feed-roller, 2l, formed with the cor'- responding circumferential groove, 22, and with a deep groove, 3, in the bottom of said groove, the guide-roller 24, the oblique guide 39, the slide or block 2G in said diagonal slot, the screw 28, for adj listing said slide, the plate or block 32, pivoted upon said slide, the screw 3G, for laterally adjusting said plate or block, and the narrow bending-roller 33, which is journaled at the inner end of said pivoted plate or block and projects into the groove 23 of said feed-roller 2l, substantially as de-V scribed.

In testimony whereof I afiix my signature in presence of two witnesses.

HERBERT E. FOWLER. Witnesses:

CHARLES H. HAYDEN, MICHAEL R. ENsCoE.

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