US1132185A

US1132185A - Apparatus for making c-bars.

Info

Publication number: US1132185A
Application number: US80503313A
Authority: US
Inventors: Robert M Hubler; Daniel E Jones
Original assignee: Elyria Iron & Steel Co
Current assignee: Elyria Iron & Steel Co
Priority date: 1913-12-06
Filing date: 1913-12-06
Publication date: 1915-03-16
Anticipated expiration: 1932-03-16

Description

R. HUBLER 62 D. E: JONES. APPARATUS FOR MAKING G-BARS.

APPLIOATION FILED DB0. 6,1913. 1 ,1 850 Patent-es. rm 1@, 1m

2 SHEETS-SHEET 1.

R. M. HUBLER & D. E. JONES.

APPARATUS FOR. MAKING U-BARS.

APPLICATION FILED DE(1.6,1913.

Patented Mar. 16, 1915.

2 SHEETS-SHEET 2.

pan rm; 1 fan .239

UNITED STATES PATENT OFFICE.

ROBERT M. HUBLER AND DANIEL E. JONES, OF ELYBIA, OHIO, ASSIGNORS TO THE ELYBIA IRON & STEEL COMPANY, OF ELYRIA, OHIO, A CORPORATION OF OHIO.

APPARATUS FOR MAKING C-BARS.

Specification of Letters Patent.

Patented Mar. 16, 1915.

To all whom. it may concern:

Be it lmownthat we, ROBERT M. HUBLER and DANIEL E. JONES, citizens of the United States, residing at Elyria, in the county of Lorain and State of Ohio, have invented a certain new and useful Improvement in Apparatus for Making C-Bars, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings. 1

This invention comprises mechanism by which a strip of metalskelp as such a strip is technically termedis bent into bars having a body portion in the form of an arc and inwardly projecting wings extending from the edges of the arc, lying in substantially the same plane and having a space between their inner ,edges. A bar thus formed has an appearance in cross section similar to that of a letter C; accordingly these bars are hereinafter referred to as C-bars. Such a bar-may be advantageously used in various structures particularly where it is desired to have a flat clamping surface and have the bolt head withinthe bar.

The object is to provide comparatively simple mechanism by which the work of accurately forming such a bar may be effectively performe Our invention is hereinafter more fully described and the essential characteristics set forth in the claims.

In the drawings, Figure 1 is the central longitudinal section through our mechanism; Fig. 2 is a top plan of the former which is mounted between the two pairs of rolls shown in Fig. 1; Fig. 3 is a plan of the lower or grooved member of the former; Fig. 4 is a bottom plan of the upper or mandrel members of the former; Fig. 5 is a view of the first pair of forming rolls, being partially sectioned, the plane of the section be ing taken on the plane of the axes of the shafts; Figs. 6, 7, 8, 9 and 10 are sections taken on corresponding lines indicated in Fig. 1; Fig. 11 is a partially sectionalyiew of the finishing rolls at the right of F1 1, this section belng taken on the plane 0 the axes of the shafts; 12 is an end elevation of the finishing end of the former; Fig. 13 is a ,cross section of the bar in its finished fo'rm'. I

Referring to the parts by numerals; 1 and 2 indicate two forming rolls: which are mounted in suitable housings, the frame of which is indicated at 4; 5 and 6 indicate two finishing rolls, each of these pairs of iolls being suitably driven in the same direc- The former comprises a lower member 10 and two

upper members

12 and 14. The lower member 10 has a trough-like groove on its upper side and the two uppervmembers have complementary ribs substantially filling this groove. The member 10 is provided with laterally extending ears 13 having elongated holes, by which it is secured in place to suitable cross members 11 of the machine. The

upper members

12 and 14 have laterally extending flanges 15 engaging corresponding shoulders on the member 10 to keep the rib of each upper member in proper {)BlatlOIl with the groove on the lower memer. for securing these upper members to the lower member, as shown, ears 17 are provided on the flanges 15, through which cap screws pass into the member 10. 'lihe dividing of the upper portion of the former into two parts facilitates the making of each of the members and also allows these members to be readily removed without disturbing the rolls when a portion of the skelp has become'jammed within the former, so that it cannot be pulled through in the .usual manner.

The forming roll 2 is provided with an annular groove which cooperates. with the convex periphery of the forming roll 1, to bend the flat skelp strip to form the arcuate portion 16 of the bar. The skelp is fed to these rolls so that this arcuate portion is formed intermediate of the sides of thestrip, thus bending the skelp 'into the shape of a flaring U, as shown in Fig. 5. The former members 10' and 12 receive this U-shaped skelp and as it progresses along these members to the end of the member 12, these edge or wing portions 18 of the skelp are bent-up- 100 wardly from the flaring position to 'a straight vertical position, as shown in Fig. 7. Throughout the length of the member 12 the sides of the trough of the member 10 and the sides of the rib portion of the mem- 1,0,5

ber 12 extend upwardly from the sides of the arcuate portion of the skelp and the upper edges 0 the sides slightly converge as at 19 in Figs. 2, 3 and 4 to bend the'side portions 18 of the skelp upwardly and in- 119 Any suitable means may be provided to substantially horizontal position, as the skelp progresses from the end of the member 12 to the

finishing rolls

5 and 6. The roll 6 having an annular groove in its periphery, and the roll 5 having a substantially straight face, these finishing rolls conform to the outside contour of the finished product. I

In order that the C-bar may have the correct inside contour after passing through the finishing rolls ,and to prevent the side portions 18 bending inwardly the rib 22 extends to the right between finishing rolls as at 26. It is sometimes desirable that these wing portions 18 of the bar should bend inwardly slightly so that .when straightened by clamping they will have a spring action tending to lock the head of the bolt engaging them, in which case this mandrel portion may be omitted, or suitably formed to allow for this. This extended mandrel has an intermediate slot 27 to admit a tongue 28 rigidlycarried by the roll 5. This tongue passes between the side portions 18 of the strip and grips the middle portion of the strip at the bottom of the groove in the lower roll, as shown in Fig.

11, to insure the pulling of the bar out of.

the former and passing it through these rolls themselves. This tongue also acts to smooth the edges of the wings and insures the opening being even and equidistant from the sides of the bar.

Although we have shown the mandrel portions 26 as being made integral with the rib portion 22, of the member 14, it is to be understood that we donot wish to be limited to this construction, as several methods 'for providing a mandrel at this point might be used, as for example: a short mandrel supported at the top to allow the wing portions 18 to pass, and extending inwardly from the right of the finishing rolls, entirely independent of the former members. 7

In Fig. 1, the skelp is shown as passing through the rolls and former, its sides being bent upwardly from the fiat strip at ,30 by the rolls 1 and 2, passing through the I former and through the finishing rolls and as shown at 32, passing off from the man- "drel members 26. By this arrangement of mechanism we have provided an inside and outside guide contacting with the skelp throughout the length of the former. This insures the correct contour of the finished product and prevents distorting the bar in any way. The use of the grooves 24 in the members 14 for bending the side members 18, provides for these side members being bent sharply around the corners at the upper part of the arcual-shaped rib. This construction allows this member 14 to be readily manufactured, While it would otherwise be very difiicult to provide an inside guide of this shape.

Having thus described my invention, what I claim is: p

1. In a device for bending strips into 0- bars comprising an arcuate portion and plane wings extending from the sides thereof and lying substantially in the same plane and having their inner edges separated, the combination of a forming guide adapted to progressively bend the wings until they lie substantially in the same plane, a pair of finishing. rolls, and a tongue carried by one of the rolls and extending between the wings and engaging the arcuate portion of the bar to draw it'from the forming guides.

2. In a device for bending strips into C- bars comprising an arcuate portion and plane wings extending from the sides thereof and lying substantially in the same plane, the combination of a forming guide adapted to engage the inside and outside of the strip and progressively bend the wings until they lie substantially in the same plane, a pair of finishing rolls, a mandrel within the bar between the two finishing rolls, and a tongue carried by one of the rolls and extending between the wings and engaging the arcuate portion of the bar whereby it may bedrawn from the forming guides.

3. In a device for bending strips into C- bars' comprising an arcuate portion and plane wings extending from the sides thereof and lying substantially in the same plane, of a forming guide adapted to engage the inside and outside of the strip and progressively bend the wings until they lie substantially in the same plane, a pair of finishing rolls, a mandrel within the bar between thetwo rolls having an intermediate slot, and a tongue carried by one of the rolls and extending between the wings into said slot and engaging the arcuate portion of the bar to draw it from the forming guides.

4. In a device for bending strips into C- bars having an arcuate portion and plane wings extending inwardly from the sides of said arcuate portion, the combination of a forming guide adapted to progressively bend the wings to substantially the same plane, apair offinishingrolls and a mandrel within the .bar extending between the rolls and being integral with the former and having a slot, and a tongue on one of i'so the finishing rolls extending through said slot and engaging the arcuate portion of the stri 5. In a device for bending strips into bars having an arcuate portion and plane wings extending inwardly from the sides of the arcuate portion, the combination of a forming guide adapted to progressively v bend the wings to substantially the same plane and leave a space between them, said former comprising inside and outside guides, the inside guide havinga rib adapted to engage the arcuate portion, said rib being extended in the form of a mandrel between the finishing rolls and having a longitudinal slot, a tongue on one of the finishing rolls extending into said slot and engaging the arcuate portion to draw the strip from the forming guides.

6. In a device for forming C-bars having an arcuate portion and plane wings projecting inwardly from the sides of the arcuate a portion, the combination of a pair of rolls adapted to curve the intermediate portion of a flat strip, a former having an arcuate trough and a rib complementary thereto for embracing this arcuate portion, grooves in said former embracing the plane wings for progressively bending them to the desired relation to the arcuate strip, and a pair of coacting finishing rolls, one of which has a a ing toward each other from the arcuate ortion, the combination of means for ben ing the intermediate portion of a flat-strip into the arcuate shape, a former having a trough and complementary rib adapted to preserve e shape of said arcuate portion and having grooves embracing the fiat portions of the strip and bending them inwardly progressively to the deslr'ed finished position, said former having shoulders engaging the edges of the strip to prevent any lateral shifting thereof while it is drawn through the former, a air of co-acting rolls one of which isprovided with an annular tongue and adapted to project between the wings of the C-bar, and a mandrel extending from the former into the pass of the rolls and bifurcated to accommodate said tongue.

8. In a device for forming C-bars having an arcuate portion and plane wings extenda ing toward each other from the arcuate portion and lying substantially in the same plane, the combination of means for bending the intermediate portion of aflat strip into the arcuate sha e desired, a former having a trough an complementary rib adapted to preserve the shape of said arcuate portion and having grooves embracing the Hat portions of the strip and bending them inwardly progressively to the desired portion and the other of which engages the exterior of the -arcuate portion.

In testimony whereof, we hereunto afiix our signatures in the presence of two wit- Inesses ROBT. M. HUBLER. DANIEL E. JONES.

Witnesses:

W. E. Dawns, L. J. BOOTHROYD.