US1049846A - Shearing-machine. - Google Patents

Description

J. R. GEORGE. SHEARING MACHINE.

APPLICATION FILED APR. 29, I909.

Patented Jan. 7, 19 13.

fnvenfor fir ELfiGorgt-B ffzar n ey UNITED STATES PATENT OFFICE.

JEROME R. GEORGE, 0F WORCESTER, MASSACHUSETTS, ASSIGNOR TO lVIORGAN' CON- STRUCTION COMPANY, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

Sl-IE ARING-MACHINE.

Application filed April 29,

To all whom it may concern l Be it known that I, JEROME R. Gnonon, a citizen of the Tfnited States, residing at Yorcester, in the county of Worcester and Commonwealth of Massachusetts, have invented a new and useful Improvement in Shearing-Machines, of which the following is a specification,accompanied by drawings forming a part of tie same, in which- Figure 1 represents in plan view. a portion of a rolling mill embodying my present invention. is an end view of the shear and the first pair of rolls in the mill. Fig. 3 is a detached view in section of the spring actuated pin Similar reference figures refer to similar parts in the different views.

My present invention relates to the combination with the rolls of a rolling mill, of a shearing apparatus, designed to sever a bar of metal during its movement through the rolls of the mill, and ithas for its object to maintain a fixed relation of speed between the cutting blades of the shear and the peripheries of the rolls. This object is accomplished by the construction and arrangement. of parts as hereinafter described, the novel features being pointed out in the annexed claims.

Referring to the accompanying drawings 1 denotes a furnace from which heated ingots or bars are fed to the pairs of rolls 2 i of a rolling mill, supported in housings 3 and arranged for the consecutive reduction of a rod passing between them, in the direction of the arrow 4:. Each pair of rolls are driven from roll shafts 5, 6 and 7, driven from a common driving shaft 8 by means of bevel gear connections 9,10 and 11 arranged to give an increased peripheral speed to each successive pair of rolls, in order to provide for the elongation of the metal as it passes between them.

'Locatedin any desired position with relation to the rolls of the mill, in the present instance between the first pair of rolls and the furnace, I place a shear 12 of any known type adapted to sever the heated ingot or bar during the period of its longitudinal movement between the rolls of the mill.

Specification of Letters Patent.

Patented Jan. 7, 1913-.- 1909; Serial No. 492,866.

the heated ingot or bar, represented by the broken lines 15, Fig. 2.

g In order to cut the ingot or bar, the cut-- ting blades 13 and 14 are caused to approach. ,and in order to allow this cutting tobe done without interrupting the move ment of the bar, the'framework 1 1 of the shear is arranged capable of a slight swingmg movement upon the shaft 16as an axis to allow the shear to follow the ingot until the cutting is accomplished.

The advancing endof the ingot or bar is entered between the first pair of rolls and during the longitudinal movement of the ingot as it passes between the rolls, it is sometimes desirable to sever the heated ingot or bar, asfor example, to cut off the final or crop endwhen the same is imperfect, or to sever the ingot or bar when its movement between the rolls is interrupted, in

order to prevent the formation of what is known as a cobble Vhenever the necessity for severing the bar arises, the shear is put into operation by the attendant and the severing of the ingot or bar is accomplished as above described without interfering with its longitudinal movement through the rolls, and without requiring any cessation or slackening of the speed of the rolls.

The above "result of cutting the ingot is accomplished by means of my present invention by so connecting the driving mechanism 'oi the pair of rolls in front. of the clear and the driving mechanism of the shear, that a predetermined correspondence of movement is maintained, with a fixed relative speed between the blades of the shear in their cutting action and the peripheral speed of that pair of rolls by which the ingot or bar isbeing moved between the blades of the shear. g

In the present embodiment of my invention I operate the movable blades of the shear by means of a rotatable shaft 16 carrying a spur gear 17 turning loosely on the shaft 16 and inmesh with a spur gear 18 attached to the roll shaft 5 of the pair of rolls next the shear. The loose gear 17 is provided with a clutching member 19 adapted to'be engaged by a slid-able clutching member 20, formed on a collar 21 having a. spline connection with the shaft 16, and capable of a sliding movement thereon. Attached to the shaft 16 is a collar 22 and interposed between the fixed collar 22 and the sliding collar 21 is a spiral spring 23, with its tension exerted to hold the clutch members 19 and 20in engagement. collar 21 is provided with a-curved cam groove 2i adapted to receive the end-f a pin 25, which is capable of sliding in a fixed framework '26.

The outer end of the sliding pin 25-is provided with a handle 27 by which the pin may be withdrawn from the cam slot- 24-, and inclosed within a chamber of'the framework 26 is a spiral spring 28 acting to move the sliding pin 25 into the cam groove 24.

The function of the sliding pin 25 when its.

end. is inserted in the cam groove 21is to hold the clutching member 20. out of engagement with the clutching member 19, thereby disconnecting the gear 17 and' shaft 16 and allowing the latter to remain at rest. lVhenever it is desired to set the shear in operation, the attendant withdraws the pin '25 from the cam groove 21, allowing the spiral spring 23 to immediately carry the clutch 20 into engagement with the clutch 19, and cause the rotation of the gear 17 to be imparted to the shaft 16. The immediate release of the sliding pin 25 will cause it to rest upon the periphery of the collar,

21 until a section of the cam groove passes beneath the pin. \Vhen this occurs the pin is forced by the spring 28 into the cam I groove and the rotation of'the cam groove past the end of thegpin slides the collar on the shaft 16 disengages the clutch 20 from the cli itch 19, allowing 'the shaft 16 to remain at rest. During the operation of the shear the cutting speed of the movable shear blade will bear a fixed relation to the peripheral speed of the rolls by means of the operative connection of both the shear and The sliding the rolls with a common driving shaft or,

source of power.

I claim,

1, The combination of a pa'ir of rolls and a shear, said rolls and saidshear havinga common operative conneotioncwhcreby their speeds shall bear a fixed rel'aii'oniimeans for 3. In a rolling mill,.a pair of rolls, a shaft connecting said pair of rolls with the driving power, .a shear, a rotatable shaftoperatively connected with said shear, a connection' between said roll and said shear, operating shafts comprising a pair of intermeshed ars. and a c-lutchin mechanism whereby said shafts may be operatively connected at will, said clutching mechanism arranged to disconnect said shafts automatically after a singlecutting operationof said shear.

Dated this twenty-seventh day of April, 1909.

JEROME R. GEORGE.

\Vitnesses Pizxnrorn Coa'mrnmcn, NELLIE VVHALEX.

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