US1497832A - Wire or thread whipping mechanism - Google Patents

Description

june E7 I924.

B. E. BALDU F WIRE OR THREAD WHIPPING MECHANISM Filed June '7 1923 3 Sheets-Sheet 1 5/21/ 0 In by W June 17 1924.

B. E. BALDUF wmz on THREAD WHIPPING mscmmsm 5 Sheets-Sheet 2 Filed June '7. 1923 June 17 1924- B. E. BALDUF WIRE 0R THREAD WHIPPING MECHANISM Filed June 7. 1923 3 Sheets-Sheet 5 [pl a m" Brayo Z". Bum f Patented m r7, tea.

BRUNO ENGELHARD BALDUF, OF CHICAGO, ILLINOIS, ASSIGNOR T0 WESTERN ELEC- TRIU COMPANY, INCORPORATED, OF NEW YORK, N, Y., A CORPORATION OF NEW WIRE 0R THREAD WHIPPING- MECHANISM.

, Application filed. June 7, 1923. Serial No. 643,865.

To all whom it may concern:

Be it known that l, Bruno ENoaLHAnn BALDUF, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Wire or Thread Whipping Mechanism, of which the following is afull, clear, concise, and exactdescri tion.

is application is a continuing applica tion in part of the ap lication filed in the names of H. H. C. rondahl and B. E.

- Balduf, Serial No. 514,180, filed November llti lhis invention relates to wire or thread whipping mechanism, and more particular ly to a mechanism for whipping the ends of telephone cords with wire preparatory to securing terminals thereto.

The ob'ect of the invention is to provide a mechanism whereb the ends of cords may be whipped with wire with speed and accuracy and with a minimum of manual labor.

lfn accordance with the general features of this invention, there is provided a whipping device which draws the wire guided from a supply source and whips it about the end of a cord which is carried upon a support which is automatically stepped back the desired distance for each turn of Wire whipped onto the cord. Means are also provided for varying the speed with which the cord support is stepped back during an operation of the mechanism so that various diameter wires may be whipped in closed or open formation with the same mechanism, and also for returning the operating parts of the mechanism to their starting position after an operation. The cord support is equipped with means whereby a loop may be formed in the end of the wire and held during the whipping operation. the loop thereafter being drawn taut for locking the end of the wire under the whipping.

The whipping device is provided with a severing surface to cut oif the excess wire after the threading operation is completed and before the whipping operation. The wire is drawn over the severing surface after it is passed around the loop forming means.

In the drawings illustrating the inventi n;

Fig. 2 is an enlarged fragmentary plan view thereof;

Fig. 3 is a vertical section taken on the line 33 of Fig. 2;

Fig. 4 is a fragmentary vation partly in section;

Fig. 5 is a plan section upon the line 5-5 thereof;

Fig. 6 is an enlarged fragmentary plan detail front eleview of the whipping finger and the cord I support with the wire threaded and the cord indicated in position ready to have an end whipped Fig. 7 is a view of the cord with an end whipped wlth wire and after removal from 1 the mechanism, and

Fig. 8 is a view thereof in a finished condition.

As shown in Fig. 1, the machine is supported upon a bench or table 10 with the main driving shaft 11 positioned below, which may be connected to any suitable driving means (not shown). Carried upon a frame 13 and rotatably mounted in bearings 14: and 15 thereon is a hollow shaft 16. Secured to one end of the shaft 16 is a friction ring 17 which forms the driven art of a clutch 18, the engaging face of w ich is preferably provided with cork inserts indicated at 19. Slidable longitudinally upon the shaft 16 and free to rotate thereon is a pulley 21 which forms the drivingpart of the clutch 18 and is connected by a belt 22 passing through an opening 24 in the bench 10 to a similar pulley 25 secured upon the main driving shaft 11.

Pivotally secured at one end to a bracket 26 secured to the underside of the bench 10 is a lever 28 the opposite end of which is connected to a suitable foot treadle or other operating means (not shown) by a link 29. A spring 30, one end secured to the bench and its other end to the lever 28, functions to return the lever 28 to its normal positionv after each operation thereof. A latch 31 pivotally secured at one end of the lever 28 and passing upward through the opening 24 in the bench. engages a pin 32 secured to a bellcrank lever 35 secured to one end of a pin 36 which is rotatably mounted in bearings 37 upon the frame 13. The pin 36 at its other end carries an arm 39 (see Fig. 2) which isthe same length as the short arm 40 of the lever 35. Positioned between the short arm 40 of the lever 35 and the arm 39 and at their upper ends is a yoke member 41 carried loosely upon a in 42 secured at either end to the upper en of the arms 39 and 40. The yoke member 41 straddles a sleeve portion 43 of the pulley 21, at the end of which is secured a collar 44. The long arm of the bell-crank lever35 is fork shaped at its end and is pivotally secured to a movable post 47 by a pin 48 (see Figs. 1 and 3).

The post 47 in its movement 1s guided in a cup-like member 49 suitably secured to the frame 13. Carried within the cup 49 between the inside lower surface and a shoulder formed on the post 47 is a spring 50. A reduced end 51 of the post 47 extends through the cup 49 and has threaded thereon a set of adjusting nuts 53. Clamped to the upper end. of the post 47 is a stop arm 54 which extends inwardly toward the axis of the shaft-16 and engages a lug 55 formed on the eri heral surface of the friction ring 17. ee igs. 1 and 3.) A leaf spring 56 secured to the underside of the stop arm 54 is shaped at its free end to allow the lug 55 on the ring 17 to be locked behind a shoulder 57 formed on the spring 56 and the end of the stop arm 54. The function of the stop arm 54 and the spring 56 carried thereby is to stop the friction ring 17 and the shaft 16 secured thereto in the same 0- sition after each operation. A leaf spring 58 bearing against an adjustable screw 59 secured in the end of the latch 31 functions to hold the latch in looking engagement with the pin 32 in the lever 35 when the mechanism is in its initial position, as shown in the drawings.

Formed upon the shaft 16 intermediate the bearings 14 and 15 is a worm 60 which meshes with a worm wheel 61 loosely carried upon a shaft 62 positioned below the shaft 16 and rotatable in the bearings or supports 63 and 64. -The worm wheel 61 forms the driving part of the clutch 65 and is adapted to be engaged by a driven member 66 secured to the shaft 62. but slidable thereon (see Fig.3). Pivotally secured to a fork formed upon the yoke member 41 directly below the shaft 16 by a pin 70 is a link 71 (see Fig. 1). The link 71 is forked at its other end as indicated at 72 and has pivoted thereon by a pin 73 a bell-crank lever 74 which at its other end 75 is yoke shaped. The bell-crank lever 74 is pivoted at 78 to the frame 13 and its yoked end 75 straddles a sleeve portion 79 integral with the driving member 66 and positioned between collars suitably secured thereon. Upon one end of the shaft 62 is secured a distribu g m .80 which is eng g by cam roller 81 carried upon an arm 82 pivlatch 31 after the conductor support 87 has.

moved back the desired amount. The movement of the striker 88 against the latch 31 disengages it from the pin 32 in thebellcrank lever 35 and through the spring 50 the long arm of-the lever 35 is moved upward, which movement through the associated arms, link and lever disengages the clutches 18 and 65,- thereby stopping the machine. The striker 88 is adjustably mounted upon the guide rod 86, so that the length of whipping put on conductors may be varied as desired.

The distributing cam is provided with a slot 91 in line with its pivot 85, within which rides a roller 92 suitably supported from an adjusting nut 93 adjustable vertically in a guideway 94 formed in the conductor support 87 by an adjusting screw 95.-

port 87 in moving rearward can be varied,

and consequently the number of turns of wire whipped onto the conductor in an operation will be varied, by moving the roller 92 up or down in the slot 91. The movement of the arm 82 is the same at all times, but it will be readily seen that by increasing the distance between the axis of the roller 92' and the pivot of the arm 82 the. speed of the support 87 in moving rearward will be increased and vice versa. A suitable scale 100 is marked upon the arm 82 to assist the operator in setting the roller 92 in the slot 91 so that the support will move at the desired speed. Secured in the support 15 is a guide pin 101 upon which the conductor support is moved and guided in its movement. Surrounding the guide rod 86 between the support 15 and a collar 102 secured upon the rod 86 and resting against the support 14 is a compression spring 103 which functions to return the conductor support 87 to its initial position after each operation. The support 15 is hollowed out as indicated at 104 (see Fig. 3) and within it is housed a clock spring 108 which is coiled around the shaft 62 with one end secured thereto as shown at 109 and its other end fastened to a pin 110 secured in the support" pens before the cam 80 has made a complete revolution, thereby preventing any damage to the machine. A pin 111 carried by the cam 80 engages a stationary stop 112 upon the return movement of the cam 80, thereby causing the cam to be brought to a stop in the same osition-after each operation.

A supp y of Wire 114 to be whipped around the ends of the conductor is carried on a spool 115 freely rotatable upon a bracket 116 secured to the rear end of the frame 13. Mounted upon a platform 117 forming a part of the bracket 116 is an adjustable guide in 118 provided with an opening 121 throug o ening 121 in the guide pin 118 is in line with the axis of the hollow shaft 16 through ""which the wire is threaded. A pair of spring tension fingers 119 engages the wire 114 upon opposite sides thereof after leaving the gui e pin 118 to put a certain tension upon the wire as it is drawn from the su plyspool. A thumb screw 120 is provi ed to center the fin ers in line withthe opening in the guide pm 118 and the opening through the shaft 16.

To that end of shaft 16 which projects outside of the bearin 63 is secured a whipping head 125. As s own in the drawings, the mechanism is in its normal position with the head 125 brought to a standstill after an operation by the engagement of the lug 55 with the stop arm 54. Formed on the whip ing head 125 is a whipping finger 126 whicfi extends forward of the whipping head 125 and has an end 127 substantially U-shaped in cross section and the hollow of which is coincident with the axis of the shaft 16. Mounted upon the whipping finger 126 below the U-shaped section and a trifle to one side of the axial line of the shaft 16 is a roller 128 (see Figs. 1 and 2). The inside end of one side of the whipping finger 126 is shaped as indicated at129 to form a knife edge, the purpose of which will be described in the description of the operation of the machine. Passages 131 and 132 are formed inthe whipping finger 126 in line with the roller 128 for the passage of the wire 114 before reaching and after leaving the roller 128.

Suitably pivoted to the frame 13 are the cover members 138 and 139 which serve to enclose the greater part of the mechanism.

The operation of this mechanism is as 'follows In the drawin the mechanism is shown in its normal posltion with the wire threaded from the supply spool through the hollow shaft 16 and the passages 131 and 132 in the whipping finger 126 and the guide roller 128 carried thereon and then looped around a pin 134 in the conductor support 87 and then over the knife edge 129 on the whipping fi g 2 By p ssi g t e Wire r he which the wire is guided. The' knife edge after it is looped around the pin 134 and exerting a slight pull on it the placed with its end projecting a suitable distance into the U-sha-ped formation of the whipping finger 126. Upon a depression of the foot treadle the friction ring 17 of the clutch 18 is freed from the retaining spring 50 and immediately thereafter the driving member 21 of the clutch 18 is moved into engagement with the friction ring 17.

Immediately after the clutch 18 is engaged the clutch 65 is also engaged and the cam 80 is set in motion in the direction indicated by the arrow in Fig. 1. The whipping finger 126 being carried by the shaft 16, it is set in motion upon the engagement of the clutch 18 and as the cam 80 moves the conductor support 87 with the conductor thereon rearward, the whipping finger I 126 wraps the wire around the end of the conductor in a spiral formation. The striker 88, being adjusted on the rod 86 the proper distance from the latch 31 so as to disengage it from the pin 32 on the bell-crank lever 35 when the conductor support 87 has moved the desired distance rearward, comes into engagement with the latch 31 and frees it from the pin 32. This causes the long arm of the bell-crank lever 35 to move up- Ward, due to the spring 50, and thereby disengages the clutches 18 and 65, bringing the shafts 16 and 62 to a standstill.

The clock spring 108 secured to the shaft 62 functions to return the cam 80 to its initial position against the stop 112 upon the disengagement of the clutch 65. The stop arm 54 and the spring 56 carried thereb upon the movement upward of the post 4 when the latch 31 is disengaged act to stop the shaft 16 and the whipping head and finger carried thereon in their initial position, as shown in the drawings, with the whipping finger 126 in an up position ready for the insertion of the end of the next conductor to be whipped. Upon the disengagement of the latch 31 and the pin 32 the operator releases the foot treadle which allows the spring 30 to move the lever 28 and the latch 31 secured thereto to their normal position.

Upon the stopping of the mechanism the operator picks up the conductor from the whipping finger, which operation draws a short length of wire from the supply spool and cuts it off close to the whipped end, as

looped around the pin 134 and then over the knife edge 129 and then cut of! ready for the followin operation.

What is c aimed is:

1. In a mechanism for whipping the ends of cords with wire, means for whlppingthe wire around the end of the cord, a support for the cord, means for stepping back said support during the whipping operation to cause the wire to be whipped about the cord in a spiral formation, means for returning said mechanism to its starting position after an operation thereof, and mechanism controlled by one of said means for causing the actuation of said returning means.

2. In a mechanism for whipping the ends of cords with wire, means for whipping the wire around the end of the cord, a support for the cord, means for stepping back said support during the whip ing operation to cause the wire to be w ipped about the cord in a spiral formation, means for returning said mechanism to its starting position after an operation thereof, and mechanism controlled by said stepping means for causing an actuation of said returning means. a

3. In a mechanism for whipping the ends of cords, a material supply reel, means for drawing the material from said supply reel and whlpping it about the end of the cord, a movable support for the cord, means for stepping back said support during the whippin operation to cause the material to be w 'pped about the cord in a spiral formation, means for varying the speed at which said support is stepped back whereby material of various diameters may be whipped in open or closed formation, means for returning said mechanism to its starting position after an operation thereof, and mechanism controlled by one of said means for causing an actuation of said returning means.

4. In a mechanism for whipping the ends of cords with wire, a wire supply reel, means for drawing the wire from said supply reel and whipping it about the end of the cord, a support for the cord, means for stepping back said support during the whipping operation, means for varyin the speed at which said support is stepped ack whereby various diameters of wires may be whipped in open and closed formations, means for returning said support to its starting position after a whipping operation, and mechanism controlled by said stepping means for causing an actuation of said returning means.

5. In a mechanism .for whipping the ends of cords with wire, means for drawing the wire from a supply and whipping it about the cord, a longitudinally movable support for the cord, cam operated means for stepping said support back during the whipping operation, andmeans for returning said support and cam operated means to their startlng position after a whipping operation.

6. In a mechanism for whi ping a core with a strand, means for w hipping the strand around the core, a support for the core, means for causing relative movement between said support and the whippin means to cause the strand to be whipped around the core in a spiral formation, means for establishing the original relation between the support and the whipping means, and mechanism controlled by one of said means for causing an actuation of the last mentioned means.

7. In a mechanism for Whipping a core with a strand, means for whipping the strand around the'core, a support for the core, means for moving said support relative to the whipping means to cause the strand to be whipped around the core in a spiral formation, means for returning said support to its starting position after an operation thereof, and mechanism controlled by one of said means for causing an actuation of said last-mentioned means.

8. In a mechanism for whipping the ends of cores with a strand, means for whipping the strand around the core, a support for the core, means for causing relative movement between said support and the whipping means whereby the strand is whipped about the core in spiral formation, means for establishing the original relation between said support and the whipping means, and mechanism controlled by said first-mentioned means for causing the actuation of said last-mentioned means.

9. In a mechanism for whipping a core with a strand, means for whipping the strand around the core. a support for the core, means for causing relative movement between the support and the whippin means to cause the strand to be whippe about the core in a spiral formation, means for varying the speed at which the last-mentioned means operates whereby strands of various diameters may be whipped in open and closed formations, means for establishing the original relation between the support and the whipping means, and mechanism controlled by one of said means for causing an actuation of said last mentioned means.

10. In a mechanism for whipping the ends of cores with a strand, means for whipping the strand around the end of the core, a support for the core, means for causing relative movement between said support and the whipping means whereby the strand will be whipped around the core in a spiral formation, means for establishing the original relation between said support and the whipping means, a trip mechanism for causmg an actuation of said last-mentioned tripping mechanism.

11 In a mechanism for whi ping a core with a strand, means for w ippmg the strand around the core, a support for the core, means for causing relative movement between said support and the whippin means whereby the strand will be whlppe about the core in a spiral formation, spr n operated means for establishing the original relation between said support and the whipping means, said spring being placed under tension by an operation of said. firstmentioned means, and a trip mechanism controlled by one of said means for causing said spring to operate.

12. In a mechanism for wh1 ping a core with a strand, means for w ipplng the strand around th core, a support for the core, means for causing relative movement between said support and the whippin means whereby the strand will be whippe' about the core in a spiral formation, spring operated means for establishing the on 1- nal relation between said support and t e whipping means, said spring being placed under tension by an operation of said firstment-ioned means, a trip mechanism for causing said sprin to operate, and mechanism controlled y said first-mentioned means for actuating said trip mechanism.

13. In a mechanism for whipping core, a material supply, means for rawing the material from said supply and guidrng and whipping it around the core comprlsm a fin er provided with a depression wit in WhlCh the core is positioned, means for automatically causing said finger to be returned to its starting position after the whipping operation, a su port for the core, and means for causing re ative movement between the core and said finger whereby the material is whipped around the core in a spiral formation.

14.. In a mechanism for whipping a core, a material supply means for drawing the material from sald supply and guiding and whipping it around the core comprisingl a finger rovided with a depression wit in which t e core is positioned, means for automatically causing said fin r to be returned to its starting position a er the whipping operation, a support for the core, means for causing relative movement between the core and said finger whereby the material is whi ped around the core in a spiral formatlon, and means'for automatically establishing the original relation between the support and said finger. I

15. In a mechanism for whippin a core with a strand, a material suppl ree means for drawing material from sai supply reel and guiding and whipping it around the end of the core comprising a finger provided with a depression in which the end of the core is positioned, means for causing said finger to be returned to its starting position after the whipping operation,

a support for the core adapted to he stepped back during the whipping operation, means for. returning said support to its startin position after an operation thereof, an mechanism controlled by one of said means for causingan actuation of said last-mentioned means.

16. In a 'mechanism for whipping the ends of cords, a material wire supply reel,

means for drawingthe material from said supply reel and guiding and whipping it about the end of the cord comprising a fin er provided with. a depression within WhlCh the end of the cord is'positioned, means for causing said finger to be returned to its starting position after a whipping operation, a support for the cord adapted to he stepped back during the whipping operation, means for establishing the ori inal relation between the support and t e whipping means, and mechanism controlled by one of said means for causing an actuation of the last-mentioned means.

17. Ina mechanism for whipping the ends of cords with wire, a material supply reel, means for drawing the material from said supply reel and whipping it about the end of the cord comprising a revolvable fin er provided with ide openings and a guide member for guiding the wire into position for whipping about the cord; means for causing said finger to be returned to its starting position after a whipping operation, a support for the cord adapted to he stepped back during the whipping operation, means for establishing the original relation between the support and the whippin means, and mechanism controlled by one 0 said means for causing an actuation of the last-mentioned means.

18. In a mechanism for whipping the ends of cords, a material wire supply reel, means for drawing the material from said supply reel and guidin and whipping it about the end of the cor comprising a fin er pro- .vided with a depression within w ich the end of the cord is positioned, means for causing said finger to be returned to its startingposition after a whipping operation, a support for the cord adapted to he stepped back during the whipping operation, means for establishing the original relation between said support and the whipping means, and mechanism controlled by said firstmentioned means for causing an actuation of said last-mentioned means.

19. In a mechanism for whipping a core with a strand, means for whipping the strand around the core comprising a rotatable element, a support for the core, means, for causing relatlve movement between said support and the whipping means to cause the strand to be whipped around the core 1n a spiral formation, means for causing said whipping means to be returned to its starting position after a 'whipping operation, sald means comprising an element for ar resting the rotation of said rotatable element at a predetermined point, means for establishing the original relation between the support and whipping means, and mechanism controlled by one of said means for causing an actuation of the last-mentioned means.

20. In a mechanism for whipping a core with a strand, mean for whipping the strand around the core including a rotatable ele ment having, a projection thereon, a support for the core, means for causing relative movement between the said support and the whipping means to cause the strand to be whipped around the core in a spiral formation, means for causing said whipping means to be returned to its starting position after a whipping operation, said means comprising a spring pressed latch for engaging said projection on the rotatable element, means for establishing the ori 'nal relation between the support and t e whipping means, and mechanism for controlling one of said means for causing an actuation of said last-mentioned means.

In witness whereof, I hereunto subscribe my name this 2nd day of June, A. D.,' 1923.

BRUNO ENGELHARD BALDUF.

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