US662917A - Device for holding rounds for rolling-mills. - Google Patents

Description

l Patented Dec. 4, |900.l

.L DASCHBACH.

(Application filed D'ec. 23, 1899,.

D EVICE FOR HLDING ROUNDS FOR ROLLING MILLS.

No. 662,9I7,

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No. 662,9I'7.

' J. DASCHBACH.

DEVICE FOR HOLDING BOUNDS FOB ROLLING MILLS.

Patentad Dec. 4, |900.

(Application led Dec. 23, 1899.)

2 Sheets-Sheet 2.

(lo Model.)

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'Unirse STATES PATENT FFICE.

JOSEPH DASCHBACII, OF PITTSBURG, PENNSYLVANIA.

DEVICE FOR HOLDING ROUNDS FRIROLLING-NIILLS.

SPECIFICATION forming part of Letters Patent No. 662,917, dated December 4, 1900.l

Application led December 23, 1899. Serial No. 741,428. No modela.

To LZ/Z 107mm/ it may concern:

Beit known that I, JOSEPH DAscHBAcH, a resident of Pittsburg, in the county of Alle.- gheny and State of Pennsylvania, have invented a new and useful Improvement in Devices for Holding Rounds for Rolling-Mills; and I do hereby declare the following to be a full, clear, and exact description thereof.

My' invention relates to mechanism for rolling cylindrical metal bars, generally known in the art as roundsg and it has for one of its objects to provide means for supporting the free ends of the rounds as they pass between ihe rolls.

A further object of my invention is to provide a supporting means for the free ends of the rounds which maybe used in connection with a feedingtable in such manner as to prevent accidental engagement of the holdingtongs with any part of. the table during the rolling operation.

It has been the usual practice in rolling` heavy cylindrical metal bars, known as rounds, to support them by means of chains and hooks depending from an overhead structure and to hold and guide the rounds by means ot hand-manipulated tongs, so as to prevent any turning or twisting of the rounds on their axes during the rolling operation. Vith such an arrangement the employment of a feeding-table was impracticable, and, furthermore, the weight of the bars operated u pon and the care necessary toinsure a proper guiding of the bars necessitated the employment of large numbers of skilled workmen.

In a former application filed byme April 4, 1899, Serial No. 711,641, I have set forth a self-operated means for holding, supporting, and guiding the bars during their passage through .the rolls, a portion of which means I propose to employ in the apparatus constituting the subject-matter of this application. I have found, however, that it may. be desirable under some circumstances to employ a less-expensive mechanism than that set forth in my said prior application and one which involves the use of hand-operated tongs for holding the bars against twisting or turning. I have therefore devised the mechanism shown in the accompanying drawings, in which- Figure l is a plan viewof the entire mech- `three bars passing between the same. Fig. 4

is a transverse section on line IV lV, Fig. 1. Fig. 5 is a plan view of one portion of the mechanism shown in Figs. 1, 2, and 4, and

Fig. 6 is a longitudinal section on line VI VI of Fig 5.

'lhedetails of construction as shown in the drawings will now be described, 1 being a pair of rolls havinga plurality of passes of diiiierent size and adapted for rolling bars of rectangular or other non-circular form in crosssection into cylindrical bars or rounds. rIhe rolls l are mounted in suitable frames 2, provided with adjusting means 3 for the bearings of the rolls and with front guides 4 and rear guides 5, as is usualin this class of apparatus.

In front of the rolls 1 is mounted a feedingtable 6, provided with a series of rollers 7 and of sufficient length to receive any length of bar that it may be desired to pass through any of the passes of the rolls 1. Hydraulic cylinders 8 or other suitable means are provided for raising and lowering the feeding-table, and the supporting frames or standards 9 are mounted upon transversely-arranged guide-V ways 10, so that the feeding-table may be moved laterally to accommodate it to different passes in the rolls. A similar table 11, provided with rollers 12, is mounted at the rear side of the rolls 1 to receive the bars and raise them in order that they may be returned to the front of the rolls for further rolling. Suitable hydraulic cylinders a'nd pistons 13 are emyloyed for raising and lowering the table 11.

In order to support the rear ends of the bars during the rolling operation, I provide two pairs of guide-rods 14, one at each side of the table 6 and supported in the standards 9, and above these standards and guide-rods Imount a carriage or buggy 15, the body of which has a downwardlyprojecting inclined forward end 16 and a substantially vertical IOO guide-rods in order to serve as guards to prevent the tongs 20 (indicated by broken lines) from coming into engagement With any of the stationary parts of the apparatus during the movement of the buggy. The means for supporting the body of the buggy on the rods 14: comprise a pair of bars 21, suitably fastened to the bottom of the body and bent substantially at right angles to the main portion at the sides of the body and having their ends bent parallel to the body portion, these latter portions being formed as axles 22 for grooved Wheels 23, which are located between the guide-rods 14 and are fastened on the axles by any suitable means.

In the operation ot' the mechanism the bar to be rolled is first placed in position upon the lfeeding-table With its rear end resting upon the buggy. It is then grasped by one or more pairs of tongs 20 at or near the rear end, the tongs being manipulated by Workmen employed for this purpose. After the bar has been carried through oneV pass of the rolls it is raised by means of the rear table and its hydraulic mechanism and returned to the front table, which is raised to receive it.

It is then given a quarter-turn in orderto remove the longitudinal side fins that have been produced between the edges of the rolls, as indicated in Fig. 3, and its outer end is placed upon the buggy. The bar is then carried throughanother pass in the rolls, after which it is returned to the front table and given a quarter-turn and either carried through the same pass in the rolls or a smaller one, according to the size of the round desired, and this process is repeated until a perfectly cyr, lindrical bar Without fins is obtained.

` Wardly-projecting rear end.

I desire it to be understood that the details of construction and the mechanism may be varied from what is shown, if desired, Without departing from the spirit and scope of myinvention. For example, my present improvement is adapted for use in connection with either two-high or three-high reversing mills Or with mills that are otherwise different in construction from that shown and described.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In mechanism for rolling cylindrical metal bars, the combination with suitable rolls and a feedtable, of guide rods or bars, supports therefor, and a buggy mounted on the guide-rods having side wings projecting over the guide-rods and their supports.

2. In mechanism for rolling cylindrical metal bars, 'the combination with suitable rolls and a feed-table, of guide rods or bars, supports therefor, and a buggy mounted on the guide-rods having an upwardly-.project- Ving rear plate and wings projecting laterally over the guide-rods and their supports.

3. vIn mechanism for rolling cylindrical metal bars, the combination With suitable rolls and a feeding-table, of guide-rods and a buggy mounted thereon having a body provided with laterally-projecting side Wings, a downwardly-inclined front end and an up- In testimony whereof I, the said JOSEPH DASCHBACH, have hereunto set my hand.

JOSEPH DASCI-IBACH. Witnesses:

GRACE C. RAYMOND, ROBERT C. TOTTEN.

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