US1458381A - Finishing rolls - Google Patents

Description

June 12, 1923.

G. BAEHR FINISHING ROLLS Filed July 51, 1918 INVENTOR WITNESSES ll atented June 112, i923;

unrrno stares GEORGE BAEHR, F PITTSBURGH, PENNSYLVANIA.

FINISHING- ROLLS.

Application filed July 31,

To all whom it may concern:

Be it known that I, Grouse Barns, a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Im rovement in Finishing Rolls, of which the ollowing is a specification.

This invention relates to rolls for forming shapes having varying cross section, and especially to mounting, driving and adjustingtmeans for such rolls. I he object of the invention is to provide a plurality of such rolls, which are geared together so as to be in exact synchronisrn, and at the same time so arranged that they may be adjusted on their respective shafts to secure proper registry of the forming surfaces.

In the drawings, Fig. 1 represents an elevation and partial section of four forming rolls mounted and driven according to this invent-ion; Fig. 2 is a vertical section through a pair of the rolls and a portion of a bar formed between the rolls; Fig. 3 is a artial central axial section showing the adgustable mounting of a driving gear on a roll shaft; and Fig. 4 is a partial section through the roll shaft showing the adjusting means of the driving gear mounted thereon.

lln rolling small bars for concrete reinforcement, or other uses, spikes, and other special shapes of varying cross-section, the enlarged portions of the product are made by cooperating oppositely placed cavities in the surfaces of th finishing rolls. in Fig. 1 l have shown a stand in which are mounted four rolls 1, 2, 3, and 4:, havin their edges beveled, the four being moun so as to contact in a vertical and a horizontal plane. Each roll comprises an inner sleeve or hub 2 having an extended circular web 3*, which is enlarged at its outer edge, and thus provides an undercut collar is, adapted to retain segmental shaping members 5. The latter members have a dove-tailed undercut portion 6, which is adapted to he retained by the collar l and a cooperating undercut collar 7, on an annular member 8, having a web 9 adapt/Q to he clamped to the vrelo 3 of the main roll body, by bolts 16. The shaping members 5' laced end to end in position about the peripi cry! of the roll and when the two wehs 3 and 9 are clamped together as shown, the shapin members are he 6. rigidly in position, as wil be obvious. They may be removed for repair, or for insertion of 1918. Serial No. 247,660.

members having a different forming surface, as will be obvious. The rolls are all similar. Th sleeves 2 of the four rolls are keyed on shafts 11, 12, 13, and 14:, res ectively. Each of these shafts is mounte on each side of the sleeves 2, in bearings 15 and 16, which are slidable in slotted extensions 17 and 18 of the roll supporting frame. The ends of the members 17 and 18 are connected by removable cap plates 19, so that the rolls may be taken out of the frame when desired. Clamping screws 20, having locking nuts 21 extend through the cap plates 19 with their ends in contact with the bearin 5 and 16, in order to adjust and limit t eir outward travel in the extensions 17 and 18.

The tour rolls illustrated are adapted to form a square bar, each side of which is formed by the shaping surface of one of the four rolls alcove described. At intervals on the finishing surfaces concave depressions 22 are provided, and these depressions on the several rolls are adapted to register as the rolls turn, so as to form a round portion, or knob 23 on the square her 24, at regular intervals.

In order to form bars or shapes having regularly spaced cross sectional variations, in a lurality of rolls, it is essential that the roll suritaces be adjusted to and kept in proper registering relation. in order to secure this result it is necessary that each of the rolls he sitiv'ely driven so that one cannot lag bei ind the other, andalso that means he provided for accurately adjusting the rolls to proper initial registering position. in the example illustrated in the drawings, the rolls are all driven by means of motor M, connected directly to shaft 11, on which are hired gears 23 and 2%, on opposite sides of the roll on each shaft, which gears mesh respectively with gears 25 and 2e, fixed on other shaits 1a and 12 respectively. A gear 27 on the other end oi shaft lei meshes with miter gear 28 fixed on the shaft 13. Consequently the motor is positively connected to and drives each or the four rolls comprising the particular mill illustrated.

in order that the different rolls may be individually circumferentially adjusted to secure exa registry or the forming depressions l h of the driving ears 23,-

a5, 26, 2?, 28 as shown in 3 and a. Sleeves 29 are keyed on the driving shaft, and the gear is mounted on this sleeve. The mounting comprises compressible yokes 30 havin extending lugs 31 connected by compression bolts 32, so that the gears may be rigidly clamped on the sleeve by ti htening bolts 32, and re leased so as to rotatable on the sleeve by loosening that member. All the driving gears are similarly mounted, and therefore any one of the rolls may be released and rotated without disturbing the position of the other rolls and without turning its driving gears, by simply loosening the clamps 32.

It will be understood that this invention is applicable to different forms of rolls, andto different combinations thereof. For example three rolls may be used to form a finished bar, or even two, and similar adjusting means applied. The rolls ma be shaped to form spikes, chisels, crow ars, punches, etc., connected by thin webs, ac-

cording to the finishing segments used.

I claim:

1. In a mill for forming bars or shapes of varying cross section, the combination of a plurality of circular rolls, individual driving shafts therefor, positive driving connections from a source of power to each of the said driving shafts, and means to completely release all but one of the said driving shafts individually from the source of power, whereb to permitunlimited circumferential fidJllStl'HGIii; of each roll with respect to the other rolls.

2. The combination with a plurality of rolls adapted to form a bar of var in cross section, of driving shafts for sai r0 ls, all

but one of said driving shafts being connected to a source of power bymeans of gears fixed on the driving shafts, and means to completely release the said gears individually from their respective shafts, whereby to permit unlimited circumferential adustment of. any roll with respect to the other rolls.

3. A mill adapted to roll shapes of var ing cross section, comprising a driven sha t, a roll situated on the shaft, two other shafts driven by geared connection to the first shaft, rolls positioned thereon, and a fourth shaft driven by a geared connection to one of the two secondary shafts, a roll positioned on the fourth shaft, the four rolls being adapted to make contact with and form a bar passing therebetween, each of the three geared connections being releasable, whereby the rolls may be individually and circumferentially adjusted with respect to each other.

4. A mill for rolling bars of varying cross section comprising a driven shaft car GEORGE BAEHR.

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