US1255666A - Camber-removing machine. - Google Patents

Description

G. W. THEISS. CAMBER REMOVING MACHlNE.

APPLICATION FILED ocr. 16'. 1 916. 1,255,66@.

3 SHEETS-SHEET I.

Patented Feb, 5, 1918.

Patented Feb. 5, 1918.

3 SHEETSSHEET 8.

G. W. THElSS. CAMBER REMOVING MACHINE.

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7 APPLICATION FILED OCT. 16, 1916. 1,9559%.

G. w. mass. CAMBER REMOVING MACHINE.

3 SHEETS-SHEET 3.

Patented Feb. 5, 1918.

GEORGE W. THEISS, 0F BUFFALO, NEW YORK.

CAMIBER-REMOVING MACHINE.

Specification of Letters Patent.

Patented Feb. 5, rate.

Application filed October 16, 1916. Serial No. 125,973.

To all whom it may concern Be it known that I, Gnonon W. Tnnrss, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Camber-Removing Machine, of which the following is a specification.

My invention relates to camber-removing machines, and more particularly to machines for removing the camber in beams, rails, and the like, as the same are passed through a straightening machine.

As is well known, in the fabrication of beams, rails and the like by the rolling process, there is present, after fabrication and upon cooling of the metal, a greater or less degree of camber in plane transverse to that of the web of the beam or rail. The object of my invention is, therefore, to attach to a straightening machine of the ordinary type camber-removing means, so that the article will come out of the machine both straightened and free from camber.

A further object of this invention is to overcome the deficiencies of devices hitherto employed, which deficiencies have been weakness, lack of rigidity, and consequent inability absolutely to remove the camber except by putting the beam or other object through the machine two or more times. Still another object is to afiord a construction, absolutely strong and rigid, which may be adjusted to any width of beam or position of beam between the straightening rolls. For it will be evident to any person skilled in the art that a machine of this sort must be of great strength and wellnigh absolute rigidity. It mustbe easy and quick of adjustment to any degree of camber to remove the same by a single operation, and it must also be adapted to the utilization of the full width of the straightening rolls.

These and other objects will be evident from the following specifications and claims and from the annexed drawings, in which Figure 1 is a diagrammatic side elevation of a straightening machine provided with my camber-removing machine.

Fig. 2 is a similar view showing in plan.

Fig. 3 is an enlarged detail end elevation of Fig. 1 showing my invention in elevation and partly in cross-section.

Fig. 4 is a horizontal section on the line 4-4 of Fig. 3.

Fig. 5 is a detail section on the line 55 of Fig. 3.

Fig. 6 is a perspective of one of my bearing stocks or heads.

I will first describe my invention generally in relation to a straightening machine, referring especially to Figs. 1 and 2.

The heavy frame 10 has mounted within it the straightening rolls 11, 11, 12, 12. These rolls are mounted in bearings in the usual manner, and the rolls 11--l1, are adjustable in vertical plane by well-known means (not shown on the drawings, but well understood by any person skilled in the rollingmill art). The rolls are power driven by usual gearing (not shown) and are annularly recessed, as shown, to receive the flanges of beams, trusses, rails, etc., as the case may be. This is all familiar construction, and these rolls straighten the article in the plane of its web. But, of course, the machine has no appreciable effect upon the camber of the article, which is at right angles tothe plane of the web; and this is the defect which my invention removes.

Adjustably mounted in bearings upon both ends of this machine are the cambenrolls 13, 14, 15, and 15*. These rolls are so mounted that their inner faces may bear against the outer flange faces of the beam or rail as it passes through the machine.

Now, let it be supposed that an I-beam, B, such as shown, has a camber convex toward the rolls 13 and 15 and a consequent camber concave toward the rolls 1% and 15*. In that case the rolls 13 and 15 are moved away from the beam 13, while the rolls 1 1 and 15 are moved into its path. Assuming that the beam B is entering the machine from the right-hand end in Fig. 2, immediately it is engaged by the rolls 11 and 12 the camber-roll 15 tends to force the beam in the direction to remove the camber, putting strain upon the concave side and stress upon the convex side, with the result that, as the beam passes through the machine and is straightened, this correction becomes stable and permanent,

At the other end of the machine the camber-roll 13 having been moved away and the roll 14: moved into the path of the beam, the roll 14 will, as soon as the beam contacts it, first remove any camber which escaped the action of the roll 15? before the beam was firmly gripped by the rolls 11 and 12. Consequently the camber-removing effect will be applied equally to the beam or rail throughout its entire length.

Having thus described the general features of a camber-removing device of this type, I will now describe and distinguish my improvements. And it is now evident, first, that the required pressure effecting this object is very great, and consequently the cam her-rolls must have resisting mountings approaching absolute rigidity under all pressures; second, .the mountings must be laterally extended sufficiently to permit the operation to the. full width or capacity of the straightening rolls.

projecting guide- lugs 31 and 32 and the threaded blocks 35. Extending inwardly from the back sides of the beds 16 are heavy lugs 22, which are-reinforced by the webbraces 23, and these lugs 22 are bolted to the sides of the frame 10. It "will thus be seen that this bed is of very great strength and rigidity, and is so secured to the frame of the straightening machine and s0 braced at its endsas to constitute a bed orsupport substantially absolutely rigid- .The bea'ringstocks 1'7 These are massive steel castings having their main body ortions (see Fig. 6 especially) 2% and integral therewith the above-mentioned dovetail portions or extensions 17 which engage the dovetail portions of the bed. Adjacent to the inner ends are large vertical lugs 25 centrally bored toreceive the pivot-bolts 26 of thecamber- rolls 13, 14, 15, 15*. Upon the upper faces of the bodies 24 are inwardlyextending yokes 27 which engage over the pivot-bolts 26 at their upper ends. These yokes are broad and are reinforced by the webs 28 and the webs 29 (see Fig. 3) which extend down midway the body 2%. This construction gives a strong, rigid bearing or support for the camber-rolls. These rolls are preferably provided with anti-friction linings 30 (see Fig. 3). Between the two dovetailcxtensions 17, 17 are lugs 31 and 32, clearly shown in Fig. 6, which are longitudinally bored to receive the screws 18 and 19. In one of each pair of stocks these lugs'31 and 32 are axially in line with the screws 18, and in the other of each pair in axial line with the screws 19. p

-The adjusting means: The screws 18Yand 19 have Wrench-heads at one end and are journaled at both ends in flanges 33 34 onthe bed 16, and are collared to prevent axial movement. The flange is removably bolt- 7 ed to the bed 16 to permit the stocks being put in place on the dovetails of the bed.

Internally screw-threaded blocks 85, in

length the distance between the lugs 31 and 32, engage the screws 18 and 19, respectively; and it is thus evident that turning of either screw 18 or 19 will move its respective rection of rotation of 'the screw.

stock in the direction determined by the diand consequentaccuracy of.action otherwise not attainable.

Having thus described my invention, 1'

claim :7 V

1. rheeombimaasn with a straightening, machine, o'fa bed standing edgew' se and (ex-'- tending across the 'end of thetrame ofsaid,

machine with (meet its vertical sides against said end, said bed ha'vlngl-ugs projecting laterally from said side and bolted to the sides; of said frame, stocks slidably mounted on. the "other vertical side of said bed and hav-- ing an interlocking connection therewith, means to ad ust said stocks. lengthwise of the bed, :and camber iolls mounted upon said.

stocks.

2. The combination with a straightening 7 mach ne through which metal shapes may be passed from end to end otfa bed Ipla'tee'x:

tending mass the end (it the frame of said I Further description is unnecessary, 'for'it machine below the line or pass, the inner vertical side of said bed plate fitting against the end of saidframe and having vertical lugs. extending laterally beside'and bolted to the sides of said frame, the outer vertical side of said bedplate-having a guide way,

stocks fitting attheirsides in said guide way and havingupwardly projecting .yokes at opposite sides of the line of pass, camber rolls mounted in said yokes,rand means to adjust the stocks/lengthwise along said bed plate, V 3. The combination with a straightening machine, of a bed extending .across the end of the frame below the line of pass, said bed having laterally projecting lugs on its inner vertical face secured to the opposite sides of said frame and also having guides on its outer "vertical face, stocks slidably "mounted on said guides, beside said outer face,

camber rollsmounted upon the (tap of said stocks, at opposite sidesofthe line of pass, and screws mountedon the bed, besidesaid outer vertical face, and engaging the stocks to "adjust the same. 7

4. The combination Witha 'straigliteiiing machine of a camb'e'r-rex'novirig machine of the type described comprising vertically arranged beds rigidly secured to both vertical ends of the straightening machine and having reinforced extension ends projecting beyond the side of said machine to permit the a spread of the camber-rolls to the full Width of the straightening rolls, camber-roll stocks carried by the outer vertical faces said beds, camber-rolls pivoted in said stocks, reinforced supports for the pivots of said 10 rolls to render the same rigid, and means for adjusting said rolls.

5. In a machine of the type described and in combination with a bed and adjusting means, a camber-roll stock comprising a lower body dovetail connected at its inner 15 side to said bed, a camber-roll and pivot therefor and a braced yoke for said pivot, mounted upon said stock said bracing for said yoke holding said roll rigidly against the outward and lateral thrust of the beam 20 or rail pressing against said roll.

GEORGE W. T HEISS.

Witnesses:

A. W. MACUMBER, VM. MACUMBER.

fiogiea of this patent may be obtained for five cents each, by addressing the Gommissioner or ratenta,

' Washington, D. C.

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