US594482A - medart - Google Patents

Description

(No Model.) '4 shets-shmj 1. I P.MEDART. MACHINE FOR STRAIGHTENING AND POLISHING SHAFTING; & e.

Patented Nov. 30,1897.

(No Model.) 4 Sheets-Sheet 2.

. P.MEDART. MACHINE-FOR STRAIGHTENING AND POLISHING SHAFTING, 8m.

Patented Nov. 30, 1897.

U- W m (No Model.) 4 Sheets-Sheet 3.

P.-MEDART MACHINE FOR STRA IGHTENING AND POLISHING SHAFTING, 660. N0. 594;482. Patented NOV. 30, 1897.

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P. MEDART. MACHINE FOR STRAIGHTENING AND POLISHING SHAFTI'NG, 6:0. Q No. 594,482.

Patented Nov, 30, 1,897.

Mrs ITATES PHILIP MEDART, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF TO WILLIAM MEDART, OF SAME PLACE.

MACHINE FOR STRAIGHTENINGQAND POLISHINIGISHAFTING, &c.

SPECIFICATION forming part of Letters Patent NO. 594,482, dated November 30, 1897. Appucaam med, June 24,1897. at; No. 642,189. (No model.)

in Machines for Straightening and Polishing is a specification.

My present invention involves certain improvements on the machine shown in my Patent No. 558,591, of April 21, 1896.- In that patent I have shown a machine adapted to Shafting, Tubes, 850., of which the following straighten and polish metal rods, tubes, &c.,

in which the article to be straightened is passed between rolls and guides interposed between the rolls. In said patent only two rolls are employed for both feeding and straightening the article. One of the rolls is concave and the other is straight or slightly convex. The rolls are positively driven and the guides shown are in the form of bars, one of which is arranged above and the other below the article operated upon by the machine.

The upper guide shown in the patent may be adjusted vertically and also transversely in a horizontal plane, and the lower guide may also be adjusted vertically and in a horizon tal plane; but the guides shown in my aforesaid patent are not so constructed,arranged, and operated as to fulfil the requirements for all classes of work.

According to my present invention. I construct, mount, and operate the straightening and feeding rolls in substantially thesame way as that shown in my aforesaid patent. I employ an upper guide of an improved construction and which is so arranged that'it may be adjusted vertically independently at each opposite end, may be adjusted transversely to the axes of the rolls in a horizontal plane, and may also have a pivotal adjustment about a vertical pivots The lower guide is also arranged-to be adjusted horizontally by independent adjusting devices at opposite ends, and it has independent devices for adjusting it vertically at opposite ends. In order to strengthen the frame of the machine, I employ bars which connect the vertical end pieces of the frame firmly together, and these bars constitute supports forthe upper guide.

Fig. 8 is a plan view thereof.

I As it is sometimes necessary to pass shafts, 850., through the machine more than once to make them perfectly true, I attach to the improved machine means for testing the shafts, &c., as they emerge from the machine. This mechanism consists of a series of rollers arranged on horizontal axes onto which the shafts are fed as they emerge from the machine and a series of live or power-driven rollers arranged in pairs to which the shaft may be transferred from the first-mentioned rollers'and by means of which they may be tested.

In the accompanying drawings, Figure 1 shows a plan view of a machine embodying my improvements. Fig. 2 shows a longitudinal section on the line 2 2 of Fig. 1. Fig. 3 shows an end elevation. Fig. 4 shows a detail plan View of the mechanism for adj usting the lower guide. Fig. 5 shows a further detail of the lower guide. Fig. 6 is a perspective view, partly in section, of the upper guide. Fig. 7 is an elevation showing the testing apparatus applied to the machine. Fig.9 is a view of one member of the upper guide. Figs. 10 and 11 are views of another member thereof, and Figs. 12 and 13 are viewsof the third member. Fig. 14 is a transverse section on the line 14 14 of Figf'ig I v The straightening and polishing rolls X andY are mounted in suitable bearings above the bed-plate in substantially the same way as that shown and described in my patent before mentioned. The mechanism for actuating and adjusting the rolls is also substantially the same as that of my prior machine and need not herein be described.

The lower guide comprises a guide-block A, a holder B, in which it is mounted, and a frame 0, in which the frame is supported. The block A may be of any suitable form and construction. It is secured, preferably, by a dovetail connection with recesses in the top of the holder B, and this holder is arranged in vertical guides c in the supporting-frame G. The frame is arranged on the bed-plate under the rolls X and Y, and it is provided with lugs D at opposite ends, into which extend screws E, that are oppositely screwthreaded at their opposite ends and extend through lugs F, rising from the bed-plate. By this arrangement the frame 0 may be adjusted transversely to the axes of the rolls X and Y, and, if necessary, one end may be adjusted more than the other, and for this purpose the lugs D and F are arranged on pivots. \Vedges G extend under the supports B be tween the guides 0. These wedges are pivotally connected at g with screws ll, operated by hand-wheels I. Each wedge maybe independently operated and may be employed to elevate or depress the lower guide to the desired extent at either end.

The frame of the improved machine is pro vided with heavy frame-pieces K, rising from the bed-plate above the plane of the rolls X and Y, and these frame-pieces are connected by heavy bars or bolts L. The frame-pieces are each provided with a cap M, secured in place by short bolts N, and the bars L are screw-threaded at opposite ends and provided with nuts Z. These bars L not only serve to strengthen and stiffen the frame, but also constitute supports and guides for the upper guide 0. The guide-block P of the upper guide may be made of any suitable material, and it is arranged in a recess q in a blockholder Q. (Shown in detail in Figs. 12 and 13.) This holder is arranged within the two members It and S of the housing, which latter members are shown in detail in Figs. 9, l0, and 11. The member R is pivotally connected by a central pivot v with a cross-bar T, supported on the bars L. The cross-piece is provided with semicircular ends 1, arranged under the bars L, and caps '15 extend over the. bars L and are bolted to the end pieces 1. \Vhen these bolts are tightened, the crosspiece is held rigidly in place. 3y loosening the bolts the cross-piece may be adjusted longitudinally 011 the bars. The cross-piece supports ad j ustin g-screws U, which have a balland-socket connection a at their lower ends with the guide-block holder Q. By means of these screws the guide-block may be adjusted vertically to any desired extent at either end.

In order to adjust the upper guide longitudinally of the bars L or transversely to the axes of the rolls X and Y, I employ oppositely-screw-threaded rods V, operating in nuts \V on the frame and having ball-andsocket connections 1; with the housing of the upper guide. The housing-sections R and S are bolted together at r ands and they interlock at 0' and s, as indicated. The space within the sections, however, is sufficient to permit the holder Q. to be freely adjusted. The arrangement, it will be observed, is such that the guide-block may be adjusted not only vertically and horizontally but vertically and horizontally independently at opposite ends, and it may be adjusted about a central vertical pivot to give it the desired position relatively to the shaft. Thisis often necessary, as the shaft in passing through the rolls is forced out of line to some extent, according to the angle at which the rolls are arranged. By making the housing in sec tions one part may be removed and the guide replaced conveniently. This is an advantage, as it is necessary in straightening bars, &c., of various diameters. The devices employed for adjusting the various parts also act as secure braces to hold the partsin their adjusted positions. By adjusting the parts independently at opposite ends proper allowances may be made for unequal wear.

It will be observed that the upper guide is supported entirely on the rods L. 13y removing the caps T the cross-bar and the up per guide may be removed and the rolls may be repaired or removed conveniently. It is often necessary to employ different sets of rolls for different kinds of work, and the constrnction of the machine is such as to facilitate the changing of the rolls.

It is necessary sometimes to put shafts, &c., through the machine a second time to straighten them accurately. To determine whether this is necessary, I provide the testing devices shown particularly in Figs. 7 and 8. The shaft, straightened. by the rolls X and Y, passes from the machine onto the rollers (1, arranged on horizontal pivots and mounted in standards 0/. In close proximity to the rollers a are live rollers 7). These rollers are arranged in frames 11, mounted on standards b Each standard supports one pair of rollers, and their peripheries are arranged but a short distance apart. These rollers are positively driven by gearing d, operated from a shaft d, connected with the main gearing of the machine. \Vhen the shaft or the like is delivered from the machine to the rollers a, it may he lifted from these rollers onto the rollers I). If the shaft is perfectly true, it will be rotated uniformly from end to end. If it be crooked or untrue, it will wabble and will therefore have to be passed through the straightening-rollers a second time.

I claim as my invention-- 1. The combination with the straighteningrolls, of an upper guide, a lower guide-block, a holder in which it is mounted, a supporting-frame having vertical guides for the holder, wedges arranged in said frame under the holder, screws for moving the wedges independently, and screws connected to the bed-plate of the machine and to the supporting-frame for independently adjusting the frame at opposite ends.

2. The combination of the straighteningrolls, the upper guide pivoted on a central, vertically-arranged pivot, and means for ad justing the guide about its pivot.

3. The combination with the straighteningrolls, of the upper guide, a central pivot therefor, means for adjusting the guide about its pivot, independent means for adjusting the opposite ends of the guide vertically, and other means for adjusting the guide transversely to the axes of the rolls.

4:. The combination with the straighteningrolls, of the upper guide-block, its holder, the housing in which the holder is mounted, a central pivot for the housing, screws extending through the housing and into sockets in the holder, and means for adjusting the housing about its central pivot.

5. The combination of the straighteningrolls, the frame of themachine, the cross-bar secured thereto, the housing pivotally connected with the cross-bar, the guide-block, its holder arranged within the housing, and means for adjusting both the housing and the holder.

- 6. The combination of the straighteningrolls, the main frame of the machine, the horizontal bars, or bolts above the plane of the straightening-rolls, the cross-bar removably secured to these bars, and adjustable longitudinally thereon, and the upper guide connected with and supported by said crossbar.

7. The combination of the straighteningrolls, the main frame having the vertical end pieces, the bars connecting the end pieces 'livered from the straightening mechanism,

and the positively-driven rolls arranged in pairs and having their peripheries in close proximity adapted to receive said shaft, 850.,

and to rotate and test it, substantially as set forth. f

In testimony whereof I have hereunto subscribed my name.

' PHILIP MEDART.

WVitnesses:

E. V. HARMAN, THos. T. FAUNTLEROY.

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