US1047168A - Wire-drawing machine. - Google Patents

Description

E. H. CARROLL. WIRE DRAWING MACHINE. APPLICATION FILED mmzs, 1909 2 SHEETS-SHEET 1.

Patented Dec. 17, 1912.

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Elberf H Carroll.

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E. H. CARROLL.

WIRE DRAWING MACHINE.

APPLIOATION FILED JAN. 25, 1909.

Patented Dec. 17, 1912 2 SHEETS-SHEET 2.

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ELBERT H. CARROLL, F WORCESTER, MASSACHUSETTS, ASSIGNOR TO MORGAN CON- STRUCTION COMPANY, OF WORCESTER, MASSACHUSETTS, A CORPORATION OIEMAS- SACHUSETTS.

WIRE-DRAWING MACHINE.

Specification of Letters Patent.

Application filed January 25', 1909. Serial No. 474,129.

- To all whom it concern."

Be it known that I, ELBERT H. CARROLL, a citizen of the United States, residing at Worcester, in the county of Worcester and Commonwealth of Massachusetts, have invented a new and useful Improvement 1n Wire-Drawing Machines, of which the following is a specification, accompanied by drawings forming a part of the same, in which 1 l Figure 1 represents a plan view of a wire drawin machine embodying my improve: ment. Fig. 2 is a side elevationof the same.- Fig. 3 is a side elevation partly shown" in section, and Fig. 4 is a detached plan View of a portion of the operative parts of the machine. I

Similar reference letters and figures refer to similar parts in the different views.

My present invention relates to that class of wire drawing machlnes in which a rotating block is employed, whereon the wire is wound as it is drawn through a reducing die, and it has for its objects to provide an improved mechanism for connecting and disconnecting the wire drawing block with its driving mechanism; to provide means for automatically stopping the block after the initial draft of wire through the die, and further to provide means for automatically stopping the block when the progress of the wire to the reducing block is ,impeded by kinks or otherwise, and I accomplish these objects by the construction and arrangement of parts as hereinafter described and pointed out in the annexed claims.

Referring to the accompanying drawings, 1 denotes a portion of the framework of the machine, 2 a rotating wire drawing block which is operatively connected with a vertical shaft 3, in the present instance, by means of a clutch mechanism 'comprisin a jaw 4 on the under side of the wire drawing block, which is engaged by a jaw 5 carried by the vertical shaft 3, which in turn is driven through beveled- gears 6 and 7 from a driving shaft 8. The under side of the block 2 is provided with an annular track 9,

ported in a yoke 11, which has gudgeons or bearings 12, 12, supported in seats 13, forming a part of the framework of the machine.

The yoke 11 is provided with an arm 14, the free end of which is pivotally connected by a link 15 with an arm 16 attached to a rock shaft 17. A spiral spring 18connects thearm l twith the fixed framework of the machine, with the tension of the spring applied to depress the free end of the arm 14, the spring having sufiicient force to raise the friction" rolls 10 against the annular track 9 and lift the rotating wire drawing block 2 from its clutch connection with the shaft 3. The outer end of the rocking shaft 17 is polygonal, as shown at 19, Fig. 2, and carries a two-armed foot treadle 20. By de pressin the end '21 of the foot treadle, the shaft 1 is rocked to carry the arms 14 and 16 and link 15 into the positions shown in Fig. 2, with the upper end of the arm 16 bearing against a stop 22 projecting from the framework of the machine, said stop re ceiving the pressure exerted by the spring 18 to hold 'the center. of the pivotal pin 23 slightly to the right of a vertical line connecting the center of the rocking shaft 17 and the pivotal pin 24:, thereby holding the parts in position against accidental diser to disconnect the block 2 from its Patented Dec. 17, 1912.

driving mechanism, the end 25 of the twoarmed treadle is depressed sufficiently to carry the pivotal pin 23 past the center line, joining the pin 24 and shaft 17, when the tension of the spiral spring 18 will continue the rocking motion of th shaft the link 15 and arm 16 into the noted by the dot and dash lines 26, thereby carrying the friction rolls 10 against the annular track 9 and lifting the wire drawing block 2 sufficiently to disengage it from its clutching mechanlsm. A very slight angu- 17, bringing I position delar movement of the rocking shaft 17 is all that is required to bring the spring 18 into action in disengaging the rotating block 2.

The wire drawing block 2 is provided with an opening 27 to receive a hook 28 to which a chain 29 is attached, provided at its end with a gripping mechanism 30, by which the end of the wire 31to be drawn may be seized and drawn through a'reducing die 32,

held in a .die box 33 far enough to be seized' by a clamping-mechanism 34, or in the position shown in Fig. 1. When this is accomplished, the rotation of the wire drawing tact with a radial arm 36, which is carried upon the upper end of a vertical rocking 'shaft 37. The lower end of the shaft 37 is provided with a radial arm 38, the free end of whichis pivotally connected by means of a link 39 with aradial arm 40 on the lower end of the rocking shaft 41. The rocking shaft 41 is provided with a radial arm 42.

The arm 42 is pivotally connected by a link 43 with a lever 44, capable of a swinging movement upon a short vertical shaft 45, journaled in a bearing 46 in the framework of the machine. Pivoted to the free end of the swinging lever 44 are a pair of parallel bars 47 and 48, capable of sliding in ways formed in a vertical wing piece 49, rojecting from the inside of the frame. ivoted at 50, between the bars 47 and 48, is a pawl 51. In its normal position the pawl 51 is held with its end 52 in alinement with the link 15. The pawl 51 is maintained in this position by'means of a spiral spring 53, inclosing a rod 54, which passes through a yoke'55 and carries on its outer end a nut 56. The nut 56 limits the swinging movement of the pawl 51 under the tension of the spring 53. V

When the spur 35- rocks the'shaft 37 by its contact with the arm 36, it draws the link 39 r in the direction of the arrow a and, through the intermediate mechanism already describedymovesthe parallel'bars 47 and 48 in the direction of the arrow 1), Fig. 4, causingthe end 52 of the pawl 51 to press against the side of the link 15 and swing it past the center line between the rocking shaft 17 and the pivot 24, so that the spring 18 will instantly act to throw the link 15 into the -*pos1t1on indicated by the dot and dash lines 26, thereby lifting the friction rolls .10 sufliciently to raise the rotating block 2 out of engagement with the shaft 3. This stops the further inding of the wire 31 and disconnects the block 2, so the end of the wire may be released from the grip 30 and seized by the' grip 34. The foot-treadle 20 is then rocked by the depression of its end 21 into the position shown in Fig. 2, thereby lowering the .block 2 into operative relation with the driving power.

The vertical rocking shaft 41, in addition to the radial arms 40 and 42 is provided with a radial arm 57, provided with a notch 58 in its upper surface, through which the wire 31 is conducted to the die box 33. The notch 58 is restricted'to substantially the s1ze of the wire, so thata kink or bend in the wire, like that shown by the broken lines at 59, Fig. 1, for exam le, which would impede the passage of the wire through the die will also act upon the radial arm 57 to swing it in the direction of the arrow c,Fig. 1, thereby rocking the shaft 41, in the same manner as it would be rocked by the contact of the spur 35 against the radial arm 36, as above described, causing the parallel bars 47 and 48 and pawl 51 to be moved in the direction of the arrow 12, Fig. 4. This movement of the pawl 51 against the side of the link 15 will throw the link 15 and arm 16 past the center line, so that the spring 18 will act to throw the link 15 and arm 16 into the position denoted by the dot and dash lines 26, Fig. 2, thereby disconnecting the drawing block 2.

The link 15 and arm 16 form substantially a toggle-joint connection between the rocking shaft 17 and the free end of the arm 14, and as the pivotal connection 23 is carried past the center line between the axes of 17 and 24, while the block is in an operative position, it requires but a slight pressure either against the link 15 by means of the pawl 51 or upon the end 25 of the foot treadle by the operator to immediately bring the spring 18 into action to disconnect the wire drawing block from its driving power.

Attached to the shaft 45 bymeans of a spline 60 is a disk 61 provided with a depending clutch tooth 62, adapted to engage a shoulder 63 on the lever 44. The disk 61 is provided with an arm 64, which is connected with the rigid framework of the machine by a spiral spring 65. To the upper end of the vertical shaft 45 is rigidly attached a radial arm 66, to the free end of which the die box 33 has a pivotal connection. The radial arm 66 is capable of a slight swinging movement within an opening 67 in the framework of the machine, and, when the drawing block is not in use,

the radial arm 66 is normally held against Y of the arm 66 is limited by the side 69 of.

the opening 67. In this position the shoulder 63 of the lever 44 is held against the clutch tooth 62 by means of a spiral spr1ng 70, which connects the lever 44 wlt-h the fixed framework of the machine.

Should a breakage occur in the w1 re between the drawing block 2 and the die, the tensile strain upon the wire would be removed, and the vertical shaft 45 w1ll be instantly rocked by the tension of the spring 65, causin means of tie connection between the clutch tooth 62 and the shoulder 63, again mov ng the parallel bars 47 and 48 in the d rection of the arrow 5, Fig. 4, and carrying the the lever 44 to be swung by pawl51 against thelink 15 to throw the togv gle-joint past the center and cause the spring 18 to disconnect thewire drawing block 2 from the driving power.

By the above described mechanism the wire drawing block will become stopped under the following conditions; first, at the beginning of itsrotation when the spur 35 contacts with the radial arm 36, enabling the end of the wire to be transferredfrom the gripping mechanism 30 to the clamping mechanism 34; second, whenever a kink or obstruction in the wire is too large to pass through the notch 58; and, third, whenever a breakage occurs in the wire between the wire drawing blopk and the die box.

In the operation of stopping the drawing block by means of the above described mechanism, the pawl 51 has its oblique edge 71 brought into contact with a fixed stud 72,

which serves to rock the pawl 51 on its.

pivot 50, in order to swing the end of the pawl which contacts with the link 15 out of alinement with the link, toallow the shaft 17 to be rocked by means of thefoot treadle 2O intothe position shown in Fig. 2, for the purpose of starting the wire drawing block without reversing the stopping mechanism.

I claim 1. In a wire drawing machine, comprising a rotatable block, and a clutching mechanism between said block and the driving power, the combination with the clutching mechanism, of a clutch disengaging mechanism, comprising atoggle jointand springoperatively connected with said toggle joint, a movable die block and mechanism operatively connected with said die block for ac-' tuating' said toggle joint to disengage the clutching mechanism when'the wirebreaks. 2. In a wire drawing mechanism, comprising a rotatable block and a clutching mechanism between said block and the driving power, the combination of a movable die box, a motor spring for disengagingsaid clutching mechanism, a toggle j'oint mechanism for engaging said clutching mechanism, and intermediate operative connections between sa1d movable-dlebox and said toggle joint mechanism for actuating the latter to disengage the clutching mechanism when the wire breaks.

-3. 'In a wire drawing mechanism, comprising a rotatable block and a clutching mechanism between said block and .the driving power, the combination of a movable die box, a spring applied to said die box to resist the strain of the wire, a toggle joint .mechanism for disengaging said clutching mechanism, and mechanism actuated by said die box spring for operating said toggle joint mechanism to release the clutching mechanism when the die box is relieved of the strain of the wire. 4

4. The combination with a die box, a wire drawing block and a clutching mechanism between said block and the driving power, of a clutch disengagingmechanism, a motor spring therefor and means for bringing said -motor spring into operative relation to said disengaging mechanism, comprising a toggle joint, mechanism for tripping said toggle mechanism, and means for holding sa1d spring in a state of tension determined by jointfa spring for actuating said tripping

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