US 1266545 A
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Description (OCR text may contain errors)
1. w. ANDERSON.
APPARATUS FOR SHAPING METAL CHANNEL BARS.
APPLICATION FILED JULY l2. 1911.
l $266,545. Patented. May 21,1918.
2 SHEETS-SHEET l.
J.. W. ANDERSON. APPARATUS FOR SHAPING METALRCHANNEL BARS.
APPLICATIONA FILED JULY l2. 19H.
Patented May 21,1918.
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JOI-IN WILLIAM ANDERSON, OF HAMILTON, CNTARIO, CANADA.
APPARATUS FOR SHAPING- METAL CHANNEL-BARS.
Application med July 12, 1917.
Metal Channel-Bars, of which the follow-A ing is a specification.
This invention relates to apparatus for bending up metal strips to form channel bars and more particularly channel barsy with incurved edges such as hereinafter described, and my object is to devise means for shaping the metal by a continuous process Without pressing or stamping.
I attain my object by means of the constructions hereinafter described and illustrated in the accompanying drawings in which- Figure 1 is a plan view of my improved apparatus;
Fig. 2 a side elevation of the same;
Fig. 3 a longitudinal section of the same;
Fig. 4 a front elevation of the pair of rolls for-inwardly curving the edges of the metal strip; and
Fig. 5 a series of cross sections showing the various stages in forming the metal channel from the viiat strip.
In the drawings like numerals of reference indicate corresponding parts in the different figures.
1 is the frame of the machine suitably shaped to support the differentparts. At one end of this frame are journaled a pair of rolls 2-3. The lower roll is spool-shaped and the upper roll cylindrical, that is, the metal strip 4 fed between them has its edges turned up at right angles as indicated in Fig. 5.
From these rolls 2 3, the metal strip passes to the two pairs of rolls 5 and 6 journaled at right angles to the rolls 2 3. The outer rolls 6 are grooved, the bottoms of the grooves being substantially semi-circular. The inner rolls 5 are shaped to suitably coperate with the outer rolls to give the semi-circular inward curve to the edges of the metal strip shown in Fig. 5.
From the rolls 5 and 6, the metal strip passes to the rolls 7 and 8. These rolls are shaped to produce bends longitudinally of the metal strip along lines located one at each side of the center of the strip, the portion of the strip between the said lines forming the bottom of the finished channel.
Specification of Letters Patent.
Patented May 21, 1918.
seriai No. 180,157.
From these rolls 7 and 8 the metal strip passes to a longitudinally arranged die, of which 9 are the sides. These sides are twisted, that is, at the end adjacent the rolls 7 and 8 the lines of their cross sections are substantially parallel to the outer parts of the metal strip at each side of the bends hereinbefore referred to, but in the course of their length these sides turn so that the lines of their cross sections are substantially vertical as shown. The result is that as the metal strip is carried through the die, the longitudinal bends are increased substantially to right angles so that the sides of the channel bars formed from the strips stand at substantially right angles to the bottom.
To suitably hold the strip in engagement with the die and to keep the bottom straight, I provide an. anti-friction roller 10 at the end of the die closest to the rolls 7 and 8, which holds the metal strip down on the parts of the die which are very nearly horizontal at this position and contact with one another. I also provide a plurality of pairs of anti-friction rollers 11, which engage the metal strip from above and below. These rollers do not need to be driven.
After passing from the die, the strip passes through the nishino' rolls 12 and 13. Three airs of rolls are preferably employed, the rolls of each pair being of approximately the same shape, the lower rolls being spoolshaped to fit the outside of the channel bar into which the strip has been formed, while the upper rolls pass through between the incurved edges to engage the bottom. These rollsy straighten the finished channel and remove all irregularities.
The rolls 2 and 3, 7 and 8 and the end rolls 12 and 13 are driven by means of the follow-- ing mechanism, but it is not usually necessary to drive the intermediate rolls 12 and 13. Longitudinally of the apparatus is journaled the drive shaft 14 provided with the usual fast and loose pulleys. By means of worm gearing 15, the drive shaft actuates the transverse shaft 16, which is provided with the pinions 17. These pinions mesh with the gear wheels 18 on the lower rolls 3 and 8. The lower rolls drive the upper rolls 2 and 7 by means of the gearing 19. The rolls 5 and 6 do not require to be driven.
The end rolls 12 and 13 are driven by the following mechanism. Worm gearing 20 is employed to drive the transverse shaft 21 from the drive shaft 14. On this transverse shaft are secured the pinions 22 which mesh with gear `wheels 23 ony the-*lower rolls 13.
rolls by means of the gearing 24. "The various rolls are adjustably supported in a manner Vwell lino'wn'- 'in-'f the art, which adjustment need not therefore; be particularly described.
Fronithe above ydescription it, will be 'seen thatI `have vdevised a machine which `will satisfactorily attainthe vobjects of myfinvention as set out in the -preainble-tofthis specification.
What I claim asfmy invention is 1. In metal shaping apparatus, thegcoinbination of a pair of driven rolls adapted to turn up the edges of a metal strip atright angles; two pairsofrolls journaled at right angles tothe first mentioned rolls and adapted to inwardly curve the said upturned edges ;,a following pair of drivenvrollsv journaledparallelto the first pair and adapted to slightly bend up the sides ofqthe strip along two lines .one at each-side ofthe center; a die following the last mentioned rolls -havingfsides whose vfaoesare shaped to engage the sides ofthe strip and to; gradually increase the bends at-the lines aforesaid to right angles as the strip passes through the die; and anti-friction rolls engaging the center, part or bottom of the `strip as it passes through the dies to hold it `down in the-,die
2. In metal shaping apparatus, the combination of a pair of driven rollsladapted-,to turn up the edges of a metal stripat right angles ;1 two pairs of rolls journaled at right angles to the first mentioned rolls and adapted to inwardly ycurve the said upturned edges; a following ,pair-ofdriven rolls ljournaled parallel to thelirst pairandadapted to slightly bend up the sides of the strip along two lines one at each side ,of the center; adie following thelast mentionedrolls having sides whose faces are shaped vto engage the sides of the strip and to gradually 1n- 'crease the bends vatthe lines aforesaid to The upper rolls are driven from the lower right angles as thestrip passes through the die; anti-friction rolls engaging the center part or bottom of the strip as it passes Athroughthe dies to hold it down iny the die and preveiit deformation; and one or more pairs of finishing rolls, each pair comprising a channel shaped roll-.ittingthe outside of the finished metalstrip and a roll adapted topassbetween theinturned edges of the strip andengage Aits bottom.
3.-"Inv1netal shaping apparatus, the combi- -nation offa y.pair ofdriven rolls adapted to gage the si'desof the strip and togradually increase the bends atfthe lines aforesaid to right angles as the strip passes through the die;anti-friction-rolls engaging the center part or bottom of the strip as itpasses through the, dies 4to hold I it down in the die yand prevent deformation; two pairs of vdriven finishing rolls and an intermediate vpair of idleiwfinishingfrolls, eaehfpa-ir comprising a channel shaped roll fittii'i-g the outside of thefffinished ymetal strip Vandfa `roll :adaptedto pass between the inturned edges of the strip andengage zits bottom.
:Signed at Hamilton, Ontario, Canada, this 9th day ofJune, 1917.
JOHN ILLIAM ANDERSON.
Witnesses BELLA JQ METCALF, I-I.; O.; PEPBER.
Goplel. ofr A.this patent maybe f obtained forvei cents each, lby,addressingfthe (l,oxnmiseiitniex'l ofbratentss Washington, IJ.` G.