US1474755A - Bridling apparatus - Google Patents

Description

Nov. 20, 1923 llA-l l J. G. BIN ET AL BRIDLING APPARATUS Filed April l24 1922 4 Sheets-Sheer L Nov. zo, 1923 3,474,755

J. G. BAIN ET AL BRIDLI NG APPARATUS Filed April 12, 1922 4 Sheets-Sheet 2 C. I E

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Nov. 20, i923 LQYMS J. G. BAIN ET AL BRIDLING APPARATUS Filed April 12, 1922 4 Sheets-Sheet 4 FEE.

Fatented Nov. 20, i923.

UNET@ STATES JOSEPH G. BAIN, 0F PITTSBURGH, AND LASZL M. STEMPEL, OF DORMONT, PENNSYL- VANIA, ASSIGNORS TO LEWS FONDRY 85 MACHINE COMPANY, OF PITTSBURGH, PENNSYLVANTA,A CORPORATIN 0F PENNSYLVANIA. 1

BRIDLING APPARATUS.

Application led April 12, 1922. Serial No. 551,767.

To all whom t may concern:

Be it known that We, JOSEPH G: BAIN and LAsZLo M. STEMPEL, both citizens of the United States, residing, respectively, at

Pit'tsburgln in the county of Allegheny and State of Pennsylvania, and Dormont, in the county of Allegheny and State of Pennsylvania, have invented a new and use ful Improvement in a Bridling Apparatus, of which the following is a speciication.

This invention relates to a bridling apparatus for use in conjunction with rolling mills.

A general objectof the invention is lo provide bridling apparatus which is simple and compact, and which avoids the ditiicult and laborious operation of threadinga strip being passed to reducing rolls through stationary bridle bars.

A more specific object of the invention is to provide bridling apparatus of the nature noted above which places the. strip being rolled under a tension which maybe regulated in accordance with the thickness of the strip and the material of which it is composed.

A further specific object of the invention is to provide bridling apparatus which places the strip under a tension sufficient for satisfactory rolling thereof without producing a rubbing of the strip against itself or any other metal.

It is also common practice to roll out metal wires of round or rectangular cross section, and ofvarying cross sectional area into ribbons. Tt is desirable that such material, equally with strips be subjected to tension while being passed through the reducing rolls. In the art it is customary to include such forms, as well as the flat forms called strips hereinabove, under the general term of bars A still further object of the invention is, therefore, to provide bridling apparatus embodying the advantages mentioned above which may be arranged or readily adapted for use withbars of round or rectangular cross section as Well as with the flat bars more speciicallycalled strips.

In the accompanying drawings Figure 1 is a side elevation showing the apparatus of the present Vinvention secured in position on the housing of a rolling mill; Figure 2 is a front elevation of the apparatus; Figure 3 is a cross section therethrough showing the elements of the appara-tus in operative position; JUigure fl is a plan view of the apparatus; Figure 5 is a plan view of a modified form of the device which is adapted particularly for the bridling of bars which are circular or rectangular in cross section; and Figure 6 is a front elevation lof such modified form of the device. The apparatus of the present invention comprises primarily side frame members or arms l and 2, which are secured to the housing 3 of the rolling mill; stationary bridle bars 4 and 5 mounted in the side arms l and 2; and a movable member or bar 6 arranged to be swung between the stationary bars across the plane of the axes thereof.

Tt is to be understood that the general object of bridling thin strips of metal passingto a rolling mill is to prevent buckling, curling, or warping of such strips. This objectmay be effected by stationary bridle bars or by suitable automatic bridling apparatus which place the strip being rolled under tension, offering resistance against the pull of the rolls. Some automatic means effect such bridling by wrapping the strip upon itself so that a frictional drag is produced between different portions of the same strip during passage of the strip to the reducing rolls of the mill. Thile this method of placingl the strip under tension is satisfactory when the strip is composed of certain meta-ls, it is unsatisfactory if the strip is composed of certain other metals, and is notably so in the case of aluminum.

The device of the present invention deiiects and grips a strip passing to the rolls wit-hout producing` a frictional drag of the strip upon itself; of dragging the strip over any other metallic surface when such is.

composed of aluminum.

As shown clearly in Figure 3 of the drawings, the strip 7 which is being rolled lies initially wholly on one side of both the stationary bars 4 and 5 in its passage to the rolls, the strip being shown as lying above these bars. Tn order to deflect the strip. the movable member or bar 6 is provided. This movable member or bar 6 is carried by bracket arms S. which are rigidly secured to the trunnions 9 of stationary bar i inwardly of the side members 1 and 2 of the apparatus. It will thus be seen that the bar 6 revolves about a fixed axis, and that it describes the arc of a circle when swung.

In order te rotate bar 4, and swing movable bar 6, an operating handle 10 is rigidl1 secured `to the outer extremity of the trunnion 9 which extends beyond the side traine member 1 of the apparatus. Movement of Y the operating handle 10 serves to swing Vthe bar 6 from the position shown in Figuresl and 2V of the drawings into the position shown in Figure 3 thereof. The bar may be locked in either et these positions by means of a spring pressed locking pin 11 which is arranged to enter notches 12in a locking plate 13 secured to the side trame 2 of the apparatus. A

As the bar 6 swings downward, describing the are ot aV circle, it deiiects the strip 7 downward with it and brings the strip into contact with a pair ot contact rolls 14 which are rotatably mounted in bearing blocksl 15 in the side members 1 and 2 ot' the apparatus. The strip 7 thus gripped between the swinging bar G and the contact rolls 14 so that it is held under tension thereby and resistance to the pull ot' the reducing rolls.

It' aluminum strips are being rolled the stationary bars 4 and 5, the swinging bar 6, and the Contact bars or rolls 14 are all preferably provided with a fibre covering 16, so thatthe strip is not dragged in contact with any metallic suriace in its passage to the rolls oit the rolling mill. The fibre o r- :telt covers 16 on the bars may be onritted ior the rolling oi strips of brass, copper, steel, or in general any metal other than aluminum or other metals the suriaces oit which are subject to injury by being dragged over a `metallic surface. l

It will be observed that the length ot the are described is limited, two detinite positions only being provided ioi'. For this reason it is necessary that the contact bars or rolls 14 be vertically iuljustable. in order that the strip may be gripped with the desired firmness, and in order that the apparatus may accomn'iodate itselt' to strips ot': dili- -iterent thickness. For this purpose the bearing blocks 1 5 are slidably mounted tor limited vertical movement in the side inembers 1 and 2, and are provided with seats 17 for receiving a stiff hat spring 18. `Against this flat spring 18 bears a screw threaded plunger 19` which has a Screw threaded engagement in a bracket 2O secured to the side members of the apparatus, and which is provided with an operating handle 21.

The bearing blocks 15 arelprovided with rounded lower Jraces which rest upon the fiat .Spring 18 and provide the Seat ,1.7 therefor. Because of this, the bearing blocks 15 have a rocking mounting on the spring, and the contact rolls or bars 14 are self adjusting so that they both bear equally at all times upon the strip 7 gripped between them and the bar t3, to exert an equal pressure thereon.

In use ot the apparatus, the strip 7 is passed over the stationaryb-ridle bars 4 and 5 and gripped by the rolls et' the mill. The movable bar 6 is then swung across the plane ot' the axes ot' the stationary bridle bars into its lower position, and the contact rolls 14 are adjusted to grip the strip firmly and hold it under tension againstl the pull of the reducing rolls.

It' a number of strips ot uni'toriii thickness are being rolled, a single adjustment of Vthe contact Vrollsserres throughout the bridliiig and rolling. oi all of such strips. ln such case the only operations necessary in tensioning the strips consist in swinging the movable bar upwardly to permit a strip to be led over `the stationary bridle barsto t-he rolls of the rolling mill, and in swinging the movable bar downwardly'to press the strip against Ithe contact members. t Y

The toi-m of the apparatus illustrated in `Figures 5 and 6 ot the drawings is adapted particularly for use in the bridling oit bars ot' circular or rectangular' cross section. F91' this purpose the apparatus shown in the preceding figures of the drawings may simply be provided with bridle bars which have therein semi-circular or rectangular grooves for receiving a bar passing to the reducing rolls. Y

As shown in these ligures et the drawings,

however, the apparatus is contracted andV comprises a spring 18 and bracket 20` shorter than the spring 1S and bracket 20, and bridle bars 4, 5, Ga, and 14a of lesser length than the corresponding bridle bars designed :tor the bridling oi flat bars, or Y The device described is not only simple in construction and economic-al to manufacture. but also provides bridling means and operation or Which is ot extreme sinplicity.

llOV

The advantages ot the device as hereinabove4 set forth, together with numerous other advantages, will be readily appreciated by -those skilled in the `art toE which the invention pertains. l Y i As the device illustrated and described is, moreover. susceptible ot a numberof modilications without departing from the spirit of the linvention embodied therein, the scope of the invention is to be restricted only by the limitation-S'contained in the claims appended hereto. v

What I claim is:

l. In bridling apparatus Vfor use in conjunction with rolling mills the combination of a plurality of stationary bridle bars, and a movable member pivotally mounted on one or said bars and arranged to be swung across the plane ol; the axes ot said stationary bars.

2. In bridling apparatus for use in conjunction with rolling` mills the combination ot a pluralty olf stationary bridle bars, contact means disposed to one side of the plane of tlie axes of said bridle bars, and a. pivotally mounted member arranOed to be swung` across said plane into proximity to said contact means.

3. In bridling` apparatus for use in conjunction with rolling mills the combination ot' a plurality of stationary bridle bars, contact means disposed to one side of the plane ot the axes of said bridle bars, and a member pivotally mounted onone of said bridle bars and arranged to be swung across said plane into proximity to said contact means.

Ll. In bridling` apparatus for use in conV` junction with rolling mills the combination ot' a. plurality of stationary bridle bars, contact means disposed to one side of the plane ot the axes of said bridle bars, and a member arranged to be moved across the plane of the axes oli said bars into proximity to said contact means.

5. In bridling apparatus for use in con junction with rolling mills the combination ot a. plurality of stationary bridle bars, contact rolls disposed to one side ot the plane oit the axes of said bridle bars, and a pivotally mounted member arranged to be swung across said plane into proximity to said contact rolls.

t3. In bridling apparatus for use in conjunction witli rolling mills the combination of a plurality of stationary bridle bars, conl tact rolls disposed to one side of the plane of the axes of said bridle bars, and a member pivotally mounted on one of said bridle Vbars and arranged to be swung` across said plane into proximity to said Contact rolls. 7. In bridling apparatus for use in conjunction with rolling` mills the combination of a plurality ot stationary bridle bars, contact rolls disposed to one side of the plane ot the axes of said bridle bars, and a member arranged to be moved across the plane of the axes of said bridle bars into proximity to said contact rolls.

8. In bridling apparatus for use in conjunction with rollingmills the combination ot a plurality of stationary bridle bars, contact means disposed to one side of the plane of the axes ot said bridle bars, a pivotally mounted member arranged to be swung across said plane into proximity to said contact means, and means for locking said niember inl such position.

9. In bridling apparatus ior use in conjunction with rolling mills the combination of a plurality of stationary bridle bars, contact'means disposed to one side oi.'A the plane of the axes of said bridle bars, a member pivotally mounted on one ot said bridle bars and arranged to be swung across said plane into proximity to said. contact means, and means for locking said member in such position.

l0. In bridling apparatus for use in conjunction with rolling mills the combination of a plurality of'stationary bridle bars, contact means disposed to one side ot the plane of the axes of said bridle bars, a member arranged to be moved across the plane of the axes of the bridle bars into proximity to said contact means, and meansl tor locking said member in such position.

ll. In bridling apparatus for use in conjunction with rolling mills the combination of a plurality of stationary bridle bars, contact rolls disposed to one side ot the plane of the axes ot' said bridle bars, a pivotally mounted member arranged to be swung across said plane into proximity to said contact rolls, and means for locking said member in such position.

l2. In bridling apparatus for use in conjunction with rolling` mills the combination of a plurality of stationary bridle bars, contact rolls disposed to one side of the pla-ne o' the axes of said bridle bars, a member pivot- Vally mounted on one ot said bridle bars and arranged to be swung across said plane into proximity to said contact rolls, and means for locking said member in such position.

13. In bridling apparatus tor use in conjunction with rolling mills the combination of a plurality of stationary bridle bars, contact rolls disposed to one side of the plane of the axes of said bridle bars. a member arranged to be moved across the plane of the axes of said bars into proximity to said contact rolls, and means for locking` said men*- ber in such position.

14e. In bridling apparatus for use in conjunction with rolling mills the combination of a plurality of stationary bridle bars, vertically adjustable contact means disposed to one side of the plane of the axes of said bridle bars, and a pivotally mounted member arranged to be swung across said plane into proximity to said contact means.

l5. In bridling apparatus for use in conjunction with rolling'mills the combination of a plurality of stationary bridle bars, vertically adjustable contact means disposed to one side of the plane of the axes of said bridle bars, and a member pivotally mounted on one of said bridle bars and arranged, to be swung across said plane inloV bars `:md intoV proximityV to said Contact 10 proximity to said Contact means. y means.

16. n bi'idling; apparatnsfl'or use in Con- VInesl'imony Whereowe hereunto set oml j unotion with rolling mills .tbe combination V-lizlnds Y of@ Vplurality of stationary bridle bars, Y JOSEPH (gr. BAN; Y. vertically adjustable Contact means disposed LASZLO M'. VSTElfI'PL. to .one side of the plane of the axes of said lVil'nesses: bridle bars, and member arranged to be WV. E. BALL-mm moved across The plaine of the axes of said E. B. WMJiERsp Y

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