US1584264A - Threading machine - Google Patents

Threading machine Download PDF

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Publication number
US1584264A
US1584264A US731152A US73115224A US1584264A US 1584264 A US1584264 A US 1584264A US 731152 A US731152 A US 731152A US 73115224 A US73115224 A US 73115224A US 1584264 A US1584264 A US 1584264A
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dies
blank
blanks
chute
pusher
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US731152A
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Wilcox Richard Lester
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Waterbury Farrel Foundry and Machine Co
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Waterbury Farrel Foundry and Machine Co
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21HMAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H9/00Feeding arrangements for rolling machines or apparatus manufacturing articles dealt with in this subclass
    • B21H9/02Feeding arrangements for rolling machines or apparatus manufacturing articles dealt with in this subclass for screw-rolling machines

Definitions

  • This invention relates to a new and improved threading machine of the rolled .cited, the entire elimination of knock out mechanism, and a flushing of the dies by I the lubricant which facilitates the thread rolling operation *and cleans the dies of chips, etc., as well as to provide for an easy and convenient adjustment of-the parts to conform to this movement of 'the'blank,
  • Figure 1 is a side elevation of the upper portion of my improved threading machine;
  • Figure 2 is a plan view thereof with the hopper mechanism removed.
  • Figure 3 is a transverse sectional View, taken generally .u'p'iih line 3-3 of Figure 2;
  • Figure 4 is an enlarged detail view of some of the parts, taken generally upon line H'of Figure 3;
  • Figure 5 is an enlarged plan view of the lower end of the chute mechanism and adjacent parts;
  • t Figure 6 is a detail side elevation of .the
  • Figure 7 is an end elevation of thelower end of the chute mechanism, looking in the direction ofthe arrows 77 of Figure 5;
  • Figure 8 is a perspective, detail view of the slide cam;
  • Figure 9 is a fragmentary plan view illustrating the means for in part positively operating the pusher mechanism
  • FIG. 10 is a side elevation thereof; and 2 Figure 11 is an enlarged detail view of the pusher slide and some of the adjacent parts.
  • 10 desig-' nates the pedestal or base, the lower portion of which'is not shown but may be of any desired constructlon, having an apron 11 projecting from one face thereof, and
  • both of which are associated with the body 12 provide convenientmeans' holding the gate in operative relation with the body meniber 12.
  • the movable die 24 Secured within the inner face of ;the gate 20 is the movable die 24:, heldtherein by'the clamps 25 or similar means.
  • thedie block 26 Adjustably secured upon the bodymember 12 by the screws 31 is thedie block 26, to which the stationary die 27 is secured by the clamp 28.
  • This die block is adjusted toward and away from the gate-by the screw 29 threaded therein and the'stopscrews 30 which are threaded in the body member 12, the inner ends of which im inge against the die block, as shown in igure 2..
  • a stud 32 may be fixed in the body 12 against the lower edge of the die block, as shown particularly in Figure 2.
  • Both the movable die 24 and the stationary die 27 are provided with the usual grooves in the working faces thereof and by means of which the thread is rolled in the blank.
  • the chute mechanism arranged in the same angle as the body member 12, comprises in part the fixed side plate 33, an
  • adjustable side plate 34 and a cap or cover 35.
  • the adjustable plate 34 is secured to a movable bracket 36 that is adjustably held upon the body member 12 by the screws 37, so as to be moved toward and away from the fixed side late 33.
  • This section varies the width of t e open space 40 between the chute plates'and accommodates blanks of various diameters.
  • the cap or cover 35 is adjustabl secured to'the side chute plate 34 at one en by the clip 38 and at the lower end to the bracket 36 by the screws 37 having a thumb nut thereon. Movement of this cap toward and away from the top; of the plates 33 and 34 accommodates the heads or blanks of various sizes.
  • a slide bracket 51 Fixed to the body member 12 is a slide bracket 51 to the outer end of which is'secured a spring arm 52 and within which is mounted a slide 5.3 that is held therein by the gib 54. Motion is imparted to this slide 53 awa from the gate 20 by a cam 55 secured to't e undersideof the ate and-movable therewith, and a cam ro 56 fixedto the inner end of the slide and held in contact with the cam by the spring 57 which en circles a spring pin 58 in the spring arm 52 and lies within the bore 59 of the slide 53.
  • the finger bracket 61 carrying the pusher (plate 62 that is held in any of its positions by the screw 63.
  • a rock 7 ends engages a pin in the finger bracket 61 and the other end a pin 71 in the rock lever 64 and by reason thereof exerts its tension so as to rock the lever 64 and hold the outer end of the finger 67 in its down position,
  • the slide 53 is moved inwardly as shown in Figure 3, but will yield and allow the same end of the finger to pass over the head of a blank during theoutward movement of the slide.
  • the rock lever 64 engages a sto screw 72 in the poppet 73 fixed in the side bracket 51 and. is rocked thereby and the finger 67 moved to its up position.
  • the blanks are delivered from the .hopper onto the chute mechanism and travel therethrough by gravity in a well known manner in an inclined path to the lower end of the chute.
  • the timed relation between the reciprocating gate and the slide 53 is such that.
  • the pusher plate 62 engages the lowermost blank in the in the blank is designated 90 and pushes the same in an angular path relatively thereto along the upper face of the die block 26 until it engages the face of the movable die 24 as shown in Figure 5.
  • This action of the pusher finger in advancing the blank from the chute to the threading dies is derived, from the spring 57 as above described so that if by, chance, the blank should catch -or for any other reason be impeded in its travel, the pusher plate will come to a stop instead of continuing to advance as if driven by positive means, tnus eliminating one very serious cause of'difliculty in this type of mechanism.
  • the upper face of the die blok 26 and the upper end of the fixed die 27 are arranged at a sli ht downward angle transversel to that 0 that the blanks Wlll. continue'to travel downthe chute. so
  • the nose 81 of'the pusher 75 projects into'the open space between the stationary and movable dies.
  • the blank As the blank is advanced toward thedies from the chute, it first engages the angular face 82 of the head 75 and presses the same inwardly against the tension of the spring '80 until the parts are in the position substantially as shown by full lines in Figure 5, at which time the nose 81 is in cont'actwith the s'hankof the blank and applying a slight pressure thereto suificient to insure its entrance between thedies.
  • the slide 53 and associated parts are held stationary in its outermost position for the purpose of adjustment of the parts etc. by a plunger 98 movable within the chamber 83 and pressed downwardly by the spring 84.
  • a knurled thumb button 85 is fixed on the upper end of this plunger and projecting therefrom at aright angle to its'length'is a pin 86.
  • plunger is shown in its down position and projecting into an opening '87 7 in the slide bracket 51 and the pin 86 is in a notch 88 in the slide.
  • the stream of lubricant was unable to flush and clean the dies.
  • the lowermost blank in the column if it has a countersunk head or the like, engages the upper corner of the upper face of the die block 26 opposite the chute and is there suspended by the head at three points, two of which points are the lower inside upper corners of the chute plates 33 and 34, and the thirdpoint the upper .corner edge of the dieblock '26.
  • the shank instead of lyin parallel with the slot or open space 40 in the chute and also with the slot leading' therefrom alongside the;
  • the pusher plate 62 now instead of engaging the shank of the lowermost blank, frequently contacts with the next succeeding blank andas the shanks of the two lowermost blanks are interlocked and thepusher plate is unable to perform its function, re-
  • This latch is hinged upon a pin 93 below the top of the block ⁇ (see Figure v7) the rear face thereof is a spring 94 whleh exerts its tension so as to i 55 to" positively withdraw thepusher-that move the inner end of the latch toward the die block 26, the position shown in Figure 5.
  • the limit of the outward position of the outer end of this latch is determined by the 5 contact of the heel thereof with the bottom of the recess on the block 92 in which it is mounted.
  • the lowermost blank in the column of blanks in the chute has a tendency to occupy a position substantially as shown in Figure 6, at which time the head of the.
  • next succeeding blank crowds under the head of the lowermost blank in the column.
  • the inner lowermost corner of the chute plate 33 15 formed with an undercut notch 96 wherein the wall 97 40 thereof is at an angle to both the inside faces of the chute plate 33 and the end thereof and terminates in a point at the intersection of the inner and lower edges of the top face of said chute plate 33, substan- 'tially as shown in Figures 6 and 7
  • the lowermost blank in the chute is in the position substantially as shown in Figure 6, it is engaged by the pusher plate 62 and its alignment is rectified by reason of the engagement of the end of the shank with the angular wall 97 and after passing the end of the chuteplate 33 is readily advanced to the threading dies.
  • a rocking movement is im arted to this shaft 106 from a cam 102, s own herein as mounted upon the hub 101 of the pinion 17 and aga nst which rides a cam roll '103 carried b the lever 104 pivotally connected to the rame by the stud 105.
  • a rod 110 projecting through a swivel 'block 111 on the lever 104 i at one end and a swivel block 112 connected with the arm. 109 at the opposite end is secured in its adjusted positions by the nuts 113.
  • means are provided for connecting the-lever 104 with the arm 108, whereby the shaft 106 is oscillated in timed relation with the other parts.
  • the pusher slide 116 moves forward and applies sufficient pressure to the blank to insure its engagement between the dies.
  • the pusher slide 116 is then withdrawn and retains a position with its front end in rear of the angular face of the guide block 114 substantially as shown in Figure 11, until the next blank is presented in front thereof.
  • a threading machine a air of dies; means for guiding blanks to t e diesin a path wherein one portion thereof is at an angle to the other portion thereof, and arranged so that the blanks will travel continuously in substantially the same plane at an angle to the horizontal through both the guiding means and dies.
  • a threading machine a pair of dies; means for guiding blanks to thedies in a path wherein one portion thereof is at anangle other than a right angle to the otherportion thereof, arranged so that the blanks will travel continuously in' substantially the from to the dies.
  • ahopper mechanismyand means for guiding blanks from the hopper mechanism to the dies, all arranged so that the blanks will travel by gravity in substantially the same planeand at an angle to the horizontal from the hopper mechanism to-and between saidv dies and until-discharged therefrom, the
  • blank guidin means being so arranged that the blanks W1 1 travel in .an angular path.
  • hopper mechanism means for, guiding blanks from the hopper mechanism tothe dies, all arranged so that blanks will travel bygravity in substantially the same plane and at an angle to the horizontal from the hopper to and between said dies and until disc ar ed-therefrom; and means. for mounting sai hopper mechanism, whereby it may be moved in said plane toward and away from the chute mechanism.
  • a hopper mechanism means for guiding blanks from the hopper mechanism to the dies all arranged so that blanks 'will travel by gravity in substantially the same plane and at an angle to the horizontal from the hopper to. andbetween said dies" and until dischar ed therefrom; and means for mount ing sai hopper mechanisjm, whereby"it'may- 4 be moved in said plane substantially withthe chute mechanism.
  • a threading machine In a. threading machine; a pair of parallel dies; a'hopper mechanism; means .for guid substantially the .same plane at an angl the'movable die; transfer means for mom ing blanks from the hopper mechanism to the dies, all arranged so that blanks will travel by gravity in substantially the same plane and at an angle to the horizontal from the hopper to and between said dies and until discharged therefrom; and means for moving said hopper mechanism vertically and occupying the same angular plane to the'horizontaL- I 11.
  • a threadin machine In a threadin machine; a pair of dies; means for gui ing blanks to the dies in a path wherein one portion thereof is at an angle other than a right angle to the other portion thereof, arranged so that the blanks will travel continuously in lo to the horizontal through both t e guiding means and. dies, the angular portion of said path being substantially parallel with one end of one of said dies.
  • a threading'machine a pair of dies; a member for holding one of the dies in a stationary position; and a chute mechamsm, sa1d chute mechamsm and dies being A I.
  • a threading machine In a threading machine; a pairof dies; a hopper mechanism; means for guiding blanks from the hopper mechanism to the dies, all arranged so that blanks will the hopper to an between said diesand Until discharged therefrom; andyielding.
  • a threading machine a pair of dies;- 2. member for holding one .ofthe dies in a stationary position; a chute mechanism; said chute mechanism and dies being in sub stantially the same plane at an angle to the horizontal, the lower end. of the chute terminating adjacent to said member so .that
  • chute travel along one face of said member and stationary die; andyielding means ap the blanks after being discharged fromthe ills plying pressure to the blank toinsure its.
  • chute mechanism terminating at a point distant fromthe mew able die; andtransfer means for movin a blank from the. chute mechanism to said ies and comprising in part a pusher actuated.
  • a threading machine a pair of dies, one of which is movable; a chute mechanism terminating at a point distant from the movable die transfer means for moving a blank from the chute mechanism to said dies and comprising in part a pusher actuated by yielding means while it is in engagement with the blank; and positively actuated means for moving said pusher in the opposite direction, comprising in partaiiim means that travels with said movable the movable die; transfer means for moving a blank from the chute mechanism to said dies and comprising in part a pusher actuated by yielding means while it is in engagement with the blank; and a finger sub stantially parallel with said plate and projecting over the head of the blank, said finger being yieldingly mounted so as to pass over the head of a blank while said pusher is being moved in one direction.
  • trans er mechanism for moving the blank from the chute mechanism to said dies, comprising in part a pusher; yielding means for actuating said pusher, during its movement ,toward said movable die; and means actuated by said cam for moving the same in the opposite direction.
  • a threading machine a pair of dies, one of which is movable; a chute mechanism terminating. ata point distant from the movable die; transfer means for moving a blank from the o te mechanism to said dies and comprising in part a pusher actuated by yielding means while it is in engagement with the blank; and yielding means for applying pressure to the blank to insure its engagement'between the dies that 1s moved in one direction by the blank while being transferred from the chute to the dies.
  • a threading machine a pair of dies, one of which is movable; a chute mechanism terminating at a point distant from the movable die; transfer means for moving a blank from the chute mechanism to said dies and comprising in part a slide; cam means for moving said slide in a path toward and away from said dies; yielding means for moving said slide in the opposite direction; and a pusher connected with said slide which during its movement passes in front of said chute mechanism.
  • a chute mechanism terminating at a point distant from the movable die; transfer means for moving a blank from the chute mechanism to said dies and comprising in part a pusher actuated by yielding means while it is in engagement with the blank; and a finger substantially parallel with said plate and projecting over the head of the blank.
  • one ofwhi'ch is movable; a chute mechanism terminating at a point distant from the movable die; transfer means for moving a blank from the chute mechanism to said dies and comprising in part a pusher actuated by yielding means while it is in engagement with the blank; a finger substantially parallel with said plate and projecting over the head of the blank; and means for moving said finger relatively to the pusher the same as 1n one of its relative positions.
  • a threading machine a pair of dies, one of which is movable; a chute mechanism terminating at a point distant from the movable di'e; transfer means for moving a blank from the chute mechanism to said dies and comprising in part a pusher actuated by yielding means while it is in engagement with the blank; a finger substantially parallel with said plate and projecting over the head of the blank; and adjustablemeans for moving said finger relatively to the pusher when the same is in one of its relative positions.
  • a threading machine a pair of dies, one of which is movable; a chute mechanism terminating at a point distant from the movable die; transfer means for moving a blank from the chute mechanism to said dies and comprising in part a slide; cam means for moving said s ide in a path toward and away from said dies; yielding menus for moving said slide inthe opposite direction; a pusher connected with said slide which during its movement passes in front of said chute mechanism; and means for holding said slide against movement in one of its "posit-ions.
  • a pair of dies one of which is movable; a chute mechanism terminating at a point distant from the movable die; transfer means for moving a :blank from-the chute mechanisn'i to said dies and comprising in part a slide; cum means for moving said slide in a path toward and .away. from said dles; yielding means for moving said slide 1n the opposite Clll'QL'tlOIlL a pusher connected with said slide which during, its movement passes iii-front of said chute mechanism; and means 'foi holdi'ng said. slide against movement in one. of its opening in a 'fixed part when said plunger positions, comprising a plunger 'n'iorably mounted 1n said slide and projected into an is m register therewith.
  • a threading machine a pair of dies; a hopper mechanism; means for guiding blanks from the hopper mechanism to the travel by gravity in substantially the same dies, all arranged so that blanks will travel by gravity in substantially the same plane and at an angle'to the horizontal from thehopper to and between said dies and until disc arged therefrom; and yielding means; applying pressure to the blank to insure itsengagement between the dies, comprising" a' pusher, having a nose thereon in aZpl-ane between the faces of. the dies, and a spring for moving the same in one direction.
  • a threading machine a pair of dies; a hopper mechanism; means for guiding blanks from the hopper mechanism to the dies, all arranged so that blanks will plane and. at an angle to the horizontal from the hopper to'and between said diesv and until discharged therefrom; and yielding means applying pressure to the blank to V insure its engagement between the dies, comprising a pusher, havinga nose thereon in a planeib'etween the faces of the dies and an inclined face adjacent thereto terminating at said nose, and a spring for moving the same in one direction.
  • delivery mechanism wherein blanks travel in two paths, one being at substantially a right angle to the other; and means for in 'suring the relative alignment of the blanks while passing the angle of said path, comprising in part-a latch which projects into one of saidpathsand is moved to its retracted position by the. blank while moving thereby.
  • blanks travel in two paths, one being at substantially a right angle to the other; means for insuring the relative alignment of the blanks while pass-' ing the angleof said path, comprising in part a latch which projects into one of said.
  • blanks travel in two paths, one being at substantially a right angle tothe other; means for insuring the relative alignment of the blanks while passing the angle of said path, comprising in part a latch having a rounded head which projects into one of. saidpaths and is moved to its retracted position by the blank while moving thereby.
  • delivery mechanism comprising in part a plate having a. notch formed in the corner thereof formed by two of its faces.
  • delivery mechanism comprising in part a. plate having an undercut notch formed in the corner thereof formed by two of its faces. 36.- In a device of the character described; delivery mechanism comprising in part a .plate having a notch formed in the corner thereof formed by two of its faces, the face of the notch being at an angle tolboth'of the adjacent faces. of the plate.
  • delivery mechanism comprising in part a plate having a notch in one corner thereof formed'by two of its faces; a latch movably connected thereto at one end below the notch;
  • a threading machine a pair of dies; a hopper mechanism; means for guiding blanks from the hopper mechanism to the dies, all arranged so that the blanks will travel by gravity in'substantially the same plane and at an an le to the horizontal from the hopper to an between said dies and until discharged therefrom; yielding means applying pressure to the blank to insure its engagement between the dies, comprising a pusher, haying a nose thereon in a plane between the-faces of the dies; a spring plying pressure to the blank to insure its engagement between the dies, comprising a pusher,- having a nose thereon in a plane 1 between the faces of the dies and held out of the path of travel of the blank to the dies the dies, all arranged so that blanks will travel by gravity in substantially the same plane and at an angle to the horizontal from the hopper to and between said dies and until discharged therefrom; yielding means applying pressure to the blank to insure its engagement between the dies, comprising a pusher

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Description

R. 1.. w||.c :ox
TBREADING MACHINE May 11 1936. 1,584,264
Filed August 9, 1924. 5 Sheets-She et 1 j INVENTOR Ryc HARD LESTERWILCOX- ATl RNE:
R. L. WILCQX THREADING MACHINE 7 Filed August 1924 5 Sheets-Sheet 2 warn- INVENTOR RICHARD LESTERWILCOX ATTORNEY I May 11 1926.
' 1,584,264 R. L. WI LCOX THRQADING MACHINE Filed August 9, 1924 5 Sheets-Sheet 3 INVENTQR RICHARDLESTERWILC OX ATioRNEY Ma 11 i926.
1.. WILCOX THREADING MACHINE 5 Sheets-Sheet 4 INVENTOR RICHARD LESTER WILCGX Filed August 9, 1924 May 11 ,1926. I 1,584,264
R. WILCOX,
THREADING MACHINE Filed Augush 9, 1924 5 Sheets-Sheet 5 naw avwewfo'c RICHA RDLES n-R Wiyao x %1 5mm,
Patented May 11, 1926.
' UNITED STATES PATENT OFFICE.
RICHARD LEsrER WILCOX, E WATERZBURY,CON1\TEGTICUT, ASSIGNOB To THE WATER- BURY FARREL FOUNDRY AND MACHINE COMPANY, 01 WATERIBURY, Co NEc'rI- our; A CORPORATION 01 CONNECTICUT.
TEEEADI G HACHINE.
Application filed'August 9, 1924. Serial No. 731,152.
This invention-relates to a new and improved threading machine of the rolled .cited, the entire elimination of knock out mechanism, and a flushing of the dies by I the lubricant which facilitates the thread rolling operation *and cleans the dies of chips, etc., as well as to provide for an easy and convenient adjustment of-the parts to conform to this movement of 'the'blank,
and for blanks of various sizes, and to make the machlne. entirely automatic In Its action.
- These and other desirable results are obtained by a machine of simple design, wherein threading dies of standard size may be readily installed and which can be operated at the highest efiicieii'cv with the minimum labor and attention. 9
To these, and other ends, my inventio tions .of parts as; will be hereinafter described and more particularly pointed out in the claims. I
Referring to the drawings, inwhich like numerals of reference designate like parts in the several figures; q
Figure 1 is a side elevation of the upper portion of my improved threading machine; Figure 2 is a plan view thereof with the hopper mechanism removed.
Figure 3 is a transverse sectional View, taken generally .u'p'iih line 3-3 of Figure 2; Figure 4: is an enlarged detail view of some of the parts, taken generally upon line H'of Figure 3;
Figure 5 is an enlarged plan view of the lower end of the chute mechanism and adjacent parts; t Figure 6 is a detail side elevation of .the
lower end of the chute and some of the.
adjacent parts; 1
Figure 7 is an end elevation of thelower end of the chute mechanism, looking in the direction ofthe arrows 77 of Figure 5; Figure 8 is a perspective, detail view of the slide cam; j
Figure 9 is a fragmentary plan view illustrating the means for in part positively operating the pusher mechanism;
- Figure 10 is a side elevation thereof; and 2 Figure 11 is an enlarged detail view of the pusher slide and some of the adjacent parts. In the preferred form of the threading machine shown in the drawings; 10 desig-' nates the pedestal or base, the lower portion of which'is not shown but may be of any desired constructlon, having an apron 11 projecting from one face thereof, and
secured upon the top thereof in any con venient manner is the body. member 12,
which is arran ed so as to lie in an inclined plane substantlally as shown in Figure 1,
this an 1e being about 30. Journaled in' this b0 y memiiier is a shaft .13 having a driving Wheel 14 upon one end anda pinion 15 on the other end,:the teeth of which mesh into those of a spur gear 16 mounted the teeth of which mesh into those of a gear 18 upon a shaft 19. Slidably mounted within the body member 12 is the gate 20 upon a shaft having a pinion- 17 thereon, consists in the threading machine, having. certain details of construction and combina-- that is connectedwith the spur gear by the i pitman 21 whereby a reciprocatory move ment is" imparted to the gate. -A gib' 22- and a cap. 23, both of which are associated with the body 12 provide convenientmeans' holding the gate in operative relation with the body meniber 12. Secured within the inner face of ;the gate 20 is the movable die 24:, heldtherein by'the clamps 25 or similar means. Adjustably secured upon the bodymember 12 by the screws 31 is thedie block 26, to which the stationary die 27 is secured by the clamp 28. This die block is adjusted toward and away from the gate-by the screw 29 threaded therein and the'stopscrews 30 which are threaded in the body member 12, the inner ends of which im inge against the die block, as shown in igure 2..
As an additional support: for the die block .26 and to minimize the strain upon the bolts and screws holding the same, a stud 32, or the like, may be fixed in the body 12 against the lower edge of the die block, as shown particularly in Figure 2.
Both the movable die 24 and the stationary die 27 are provided with the usual grooves in the working faces thereof and by means of which the thread is rolled in the blank. x
The chute mechanism, arranged in the same angle as the body member 12, comprises in part the fixed side plate 33, an
adjustable side plate 34 and a cap or cover 35. The adjustable plate 34, is secured to a movable bracket 36 that is adjustably held upon the body member 12 by the screws 37, so as to be moved toward and away from the fixed side late 33. This section varies the width of t e open space 40 between the chute plates'and accommodates blanks of various diameters.
Preferably, the cap or cover 35 is adjustabl secured to'the side chute plate 34 at one en by the clip 38 and at the lower end to the bracket 36 by the screws 37 having a thumb nut thereon. Movement of this cap toward and away from the top; of the plates 33 and 34 accommodates the heads or blanks of various sizes.
angle of inclination of the bodynnember 12 by means of the screw 44 and locked in these several positions by the bolts 45 that pass through slots 46 therein. This bracket 43 is mounted upon the pedestal or base 10 and adjusted by means of the screw 47 in a path at a right angle to the angle of inclination to the body member 12 and there locked in any of its several positions by the bolts 48 in a well known manner. By thus mounting the hopper, it may be moved as a unit v to any desired position'without varying its angular relation to the body 12 or to the chute mechanism- The blanks are discharged-from the hopperin a well known manner by a'vertically -.movable plate 49 actuated by a pitman 50 same, or discharging the blanks therefrom,-
connected therewith and to the gear 18. The hopper, the-method of operating the constitutes no part of this present invention.
Fixed to the body member 12 is a slide bracket 51 to the outer end of which is'secured a spring arm 52 and within which is mounted a slide 5.3 that is held therein by the gib 54. Motion is imparted to this slide 53 awa from the gate 20 by a cam 55 secured to't e undersideof the ate and-movable therewith, and a cam ro 56 fixedto the inner end of the slide and held in contact with the cam by the spring 57 which en circles a spring pin 58 in the spring arm 52 and lies within the bore 59 of the slide 53. As the gate moves to the left the parts are as shown in Figure 2, at which time a blank is between the faces of the threading dies, the slide 53 is moving away from the gate against the tension of the spring 57 which is thereby compressed. Upon the return stroke toward the gate by the expansion of the spring 57, the roll 56 thus maintaining its cont-act with the cam 55.
Adjustably secured to the slide 53 by the bolt 60 is the finger bracket 61, carrying the pusher (plate 62 that is held in any of its positions by the screw 63. A rock 7 ends engages a pin in the finger bracket 61 and the other end a pin 71 in the rock lever 64 and by reason thereof exerts its tension so as to rock the lever 64 and hold the outer end of the finger 67 in its down position,
of the gate, the slide 53 is moved inwardly as shown in Figure 3, but will yield and allow the same end of the finger to pass over the head of a blank during theoutward movement of the slide. When the slide 53 nears its outermost position the rock lever 64 engages a sto screw 72 in the poppet 73 fixed in the side bracket 51 and. is rocked thereby and the finger 67 moved to its up position. The blanks are delivered from the .hopper onto the chute mechanism and travel therethrough by gravity in a well known manner in an inclined path to the lower end of the chute. The timed relation between the reciprocating gate and the slide 53 is such that. the pusher plate 62 engages the lowermost blank in the in the blank is designated 90 and pushes the same in an angular path relatively thereto along the upper face of the die block 26 until it engages the face of the movable die 24 as shown in Figure 5. This action of the pusher finger in advancing the blank from the chute to the threading dies is derived, from the spring 57 as above described so that if by, chance, the blank should catch -or for any other reason be impeded in its travel, the pusher plate will come to a stop instead of continuing to advance as if driven by positive means, tnus eliminating one very serious cause of'difliculty in this type of mechanism. The upper face of the die blok 26 and the upper end of the fixed die 27 are arranged at a sli ht downward angle transversel to that 0 that the blanks Wlll. continue'to travel downthe chute. so
wardly-during their transverse movement.
The blank, after its transfer to the dies is picked'up thereby and rolled therebetween by the action of the movable die until it has passed the end of the fixed die as shown by the broken lines in Figure 5, at which time it is released and drops by gravity onto the guide tray 7 4 from which it drops into the .apron 11. Thus the blank, from the time up between the dies after being delivered thereto by the transfer mechanism, but this engagement is assured by the means which comprises a pusher 75 having ashank 76 thereon. that is supported in blocks' 77 connected by screws 78 or the like, to the plate 79 separably secured to the cap 23. The spring 80 surrounding this shank 76 between the blocks- 77 exerts its tension so as to move the pusher toward the fixed die 27;
When the pusher plate 62 is ithdrawn the nose 81 of'the pusher 75 projects into'the open space between the stationary and movable dies. As the blank is advanced toward thedies from the chute, it first engages the angular face 82 of the head 75 and presses the same inwardly against the tension of the spring '80 until the parts are in the position substantially as shown by full lines in Figure 5, at which time the nose 81 is in cont'actwith the s'hankof the blank and applying a slight pressure thereto suificient to insure its entrance between thedies.
Other types and forms of pusher mechanism may be substituted as may seem desirable. The slide 53 and associated parts are held stationary in its outermost position for the purpose of adjustment of the parts etc. by a plunger 98 movable within the chamber 83 and pressed downwardly by the spring 84. A knurled thumb button 85 is fixed on the upper end of this plunger and projecting therefrom at aright angle to its'length'is a pin 86. In Figure 4 this. plunger is shown in its down position and projecting into an opening '87 7 in the slide bracket 51 and the pin 86 is in a notch 88 in the slide. When the parts are in the ,position thusdescribed, the slide'is held in its outermost position against movement. By lifting the plunger upwardly against the tension of thespring 84, and the pin 86 out of the notch 88 and then rotating the same slightly so that the pin rests upon the top of the lug 89, substantially as shown in Figure 1, the plunger 98 is withdrawn into the chamber 83 and above the opening 87 and the slide 53 isoperable, asbefore, by the cam 55 and the spring 57. j-
As the diesmove in-an inclined plane, the
' and engagin lubricant applied thereto readil washes and cleans the dies, due to the fact that it travels through the'grooves therein. In the old type machines, w erein the dies travel in a sub.-
stantially horizontal plane, the stream of lubricant was unable to flush and clean the dies. Thus the chips frequently remained dies, etc., as shown herein, the lowermost blank in the column, if it has a countersunk head or the like, engages the upper corner of the upper face of the die block 26 opposite the chute and is there suspended by the head at three points, two of which points are the lower inside upper corners of the chute plates 33 and 34, and the thirdpoint the upper .corner edge of the dieblock '26. Sometimes. with this form of blank, the shank. instead of lyin parallel with the slot or open space 40 in the chute and also with the slot leading' therefrom alongside the;
upper face of the die block 26, has a tends ency to out, by reason of the weight of the blanks in the chute resting against it.
This results in the lower end thereof being inclined toward the threadin dies. When soarranged, the shank of t e next blank inthe column of blanks in the chute is scrowded by gravity, assisted b the weight of the other blanks in the co u-mn, into a position where it is under the shank of the owermost blank, which it? will be remembered, is inclined a little toward the dies.
The pusher plate 62, now instead of engaging the shank of the lowermost blank, frequently contacts with the next succeeding blank andas the shanks of the two lowermost blanks are interlocked and thepusher plate is unable to perform its function, re-
mains stationary. The streamof blanks to the threading dies is then cut off. This sitnation does not occur except with blanks having acountersunk head and a relatively long shank. To prevent such possible interlocking of the two lowermost blanks and to insure a positive feed of a stream of blanks to the dies, Ihave, inserted a latch 91 in the block. 92, having a roundedouter end and secured to the chute plate 33 at .its lower. end. This latch is hinged upon a pin 93 below the top of the block\ (see Figure v7) the rear face thereof is a spring 94 whleh exerts its tension so as to i 55 to" positively withdraw thepusher-that move the inner end of the latch toward the die block 26, the position shown in Figure 5. The limit of the outward position of the outer end of this latch is determined by the 5 contact of the heel thereof with the bottom of the recess on the block 92 in which it is mounted. When in this out position, as-
shown in Figure 5,there is an open space between the outer end of the latch and the If the shanks of the blanks are so short,
that the weight of the head outweighs that of the shank, the lowermost blank in the column of blanks in the chute has a tendency to occupy a position substantially as shown in Figure 6, at which time the head of the.
next succeeding blank crowds under the head of the lowermost blank in the column.
In this position the shank of the lowermost blank projects back into the slot 40 and by reason thereof is locked against movement by the pusher plate 62 and hence is not fed to the threading dies. To obviate this difficulty and insure a proper alignment of the lowermost blank relatively to the chute slot and the pusher plate, the inner lowermost corner of the chute plate 33 15 formed with an undercut notch 96 wherein the wall 97 40 thereof is at an angle to both the inside faces of the chute plate 33 and the end thereof and terminates in a point at the intersection of the inner and lower edges of the top face of said chute plate 33, substan- 'tially as shown in Figures 6 and 7 When the lowermost blank in the chute is in the position substantially as shown in Figure 6, it is engaged by the pusher plate 62 and its alignment is rectified by reason of the engagement of the end of the shank with the angular wall 97 and after passing the end of the chuteplate 33 is readily advanced to the threading dies.
It is desirable with some classes of work ro jects the blank between the dies, instea of maintaining it under aforward pressure, aswith the pusher 5. To this end I have provided a mechanism, whichconsists of a pusher slide 116 which is substituted for the pusher slide 75, the shank 117 thereof being supported in the blocks 77 and projects rearwardly therefrom with a collar 118 fixed thereon. Rotatable in the journal block 107, conwas nected with the cap 23 is a shaft 106 havin on one end an arm 109, which at its lower en straddles the shank 117 and contacts with the inner face of the collar 11% substantially as shown in-Figure 10. A rocking movement is im arted to this shaft 106 from a cam 102, s own herein as mounted upon the hub 101 of the pinion 17 and aga nst which rides a cam roll '103 carried b the lever 104 pivotally connected to the rame by the stud 105. A rod 110 projecting through a swivel 'block 111 on the lever 104 i at one end and a swivel block 112 connected with the arm. 109 at the opposite end is secured in its adjusted positions by the nuts 113. Thus means are provided for connecting the-lever 104 with the arm 108, whereby the shaft 106 is oscillated in timed relation with the other parts. By this mechanism the pusher 116 is withdrawn against the tension of the spring so that the forward end thereof is in rear of the inclined face of the block 114, secured to the fixed plate 33 by the screw 115 until the blank is in" substantia'ly the position shown in Figure 11. An ad ustable stop screw 119 provides means for limiting the movementof the pusher toward the stationary die 27. At
the instant the blank is brought up against the movable die 24 the pusher slide 116 moves forward and applies sufficient pressure to the blank to insure its engagement between the dies.
The pusher slide 116 is then withdrawn and retains a position with its front end in rear of the angular face of the guide block 114 substantially as shown in Figure 11, until the next blank is presented in front thereof.
Aside from the possible modifications and alterations in thedetail construction of my invention as herein referred to, others will,
readily suggest themselves to those versed in the art, and therefore, I do not limit myself to the exact construction herein shown and described. What I claim is z- 1. In a threadingmachine; a pair of dies;
and means for gulding blanks to the dies, arranged so that the blanks will travel continuousy in substantially the same plane at an angle to the horizontal through both the guidin 'means and dies.
2. In a threading machine; a air of dies; means for guiding blanks to t e diesin a path wherein one portion thereof is at an angle to the other portion thereof, and arranged so that the blanks will travel continuously in substantially the same plane at an angle to the horizontal through both the guiding means and dies.
3. In a threading machine; a air of (lies; means for guiding blanks to t e dies in a path wherein one portion thereof is at an angle other thana right angleto the other portion thereof, arranged so that the blanks will travel. continuously in' substantially the same plane .at an angle to the horizontal through both the guiding means and dies. 1 f 4. In a threading machine; a pair of dies; means for guiding blanks to thedies in a path wherein one portion thereof is at anangle other than a right angle to the otherportion thereof, arranged so that the blanks will travel continuously in' substantially the from to the dies.
6. In a threading machine; .a pair of dies; a hopper mechanism; and means for guiding blanks from the hopper mechanism to the dies, all arranged so that blanks willv travel by gravity in substantially the same plane and at an angle to the horizontal from the hop er to and between said dies and ,until discharged therefrom.
' 7 In a threading machine; a pair of dies; ahopper mechanismyand means for guiding blanks from the hopper mechanism to the dies, all arranged so that the blanks will travel by gravity in substantially the same planeand at an angle to the horizontal from the hopper mechanism to-and between saidv dies and until-discharged therefrom, the
blank guidin means being so arranged that the blanks W1 1 travel in .an angular path. 8. In a threading machine; a pair of dies;
,a hopper mechanism; means for, guiding blanks from the hopper mechanism tothe dies, all arranged so that blanks will travel bygravity in substantially the same plane and at an angle to the horizontal from the hopper to and between said dies and until disc ar ed-therefrom; and means. for mounting sai hopper mechanism, whereby it may be moved in said plane toward and away from the chute mechanism.
' 9; In a threading machine; a pair of dies;
.. a hopper mechanism; means for guiding blanks from the hopper mechanism to the dies all arranged so that blanks 'will travel by gravity in substantially the same plane and at an angle to the horizontal from the hopper to. andbetween said dies" and until dischar ed therefrom; and means for mount ing sai hopper mechanisjm, whereby"it'may- 4 be moved in said plane substantially withthe chute mechanism.
10, In a. threading machine; a pair of parallel dies; a'hopper mechanism; means .for guid substantially the .same plane at an angl the'movable die; transfer means for mom ing blanks from the hopper mechanism to the dies, all arranged so that blanks will travel by gravity in substantially the same plane and at an angle to the horizontal from the hopper to and between said dies and until discharged therefrom; and means for moving said hopper mechanism vertically and occupying the same angular plane to the'horizontaL- I 11. In a threadin machine; a pair of dies; means for gui ing blanks to the dies in a path wherein one portion thereof is at an angle other than a right angle to the other portion thereof, arranged so that the blanks will travel continuously in lo to the horizontal through both t e guiding means and. dies, the angular portion of said path being substantially parallel with one end of one of said dies.
12. In a threading'machine; a pair of dies; a member for holding one of the dies in a stationary position; and a chute mechamsm, sa1d chute mechamsm and dies being A I.
in substantially the same plane at an angle to the horizontal, the lower' end of the chute terminating adjacent to said member.
so that the blanks after being discharged from the chute travel alon one faceof said member and stationary die.
13. In a threading machine; a pairof dies; a hopper mechanism; means for guiding blanks from the hopper mechanism to the dies, all arranged so that blanks will the hopper to an between said diesand Until discharged therefrom; andyielding.
means applying pressure to the blankfto in: sure its engagement between the dies.
its
14. In a threading machine; a pair of dies;- 2. member for holding one .ofthe dies in a stationary position; a chute mechanism; said chute mechanism and dies being in sub stantially the same plane at an angle to the horizontal, the lower end. of the chute terminating adjacent to said member so .that
chute travel along one face of said member and stationary die; andyielding means ap the blanks after being discharged fromthe ills plying pressure to the blank toinsure its.
engagement between the dies.
15. In a threading machine; a pair of dies,
one of which'is movable; a chute mechanism terminating at a point distant fromthe mew able die; andtransfer means for movin a blank from the. chute mechanism to said ies and comprising in part a pusher actuated.
by yielding means while it is in en agement with the blank.
16. In a threading machine; one of which is. movable; a chute mechanism terminating at a point distant-from a blank from the chute'mechanism-to-sai' a pair of dies,
at I
travel by gravity in substantially the same plane and at an an leto the horizontal from dies and comprising in art a pusher actuated by yielding means w ile it is in engagement with the blank; and positively actuated means for moving said pusher in the opposite direction.
' 17. In a threading machine; a pair of dies, one of which is movable; a chute mechanism terminating at a point distant from the movable die transfer means for moving a blank from the chute mechanism to said dies and comprising in part a pusher actuated by yielding means while it is in engagement with the blank; and positively actuated means for moving said pusher in the opposite direction, comprising in partaiiim means that travels with said movable the movable die; transfer means for moving a blank from the chute mechanism to said dies and comprising in part a pusher actuated by yielding means while it is in engagement with the blank; and a finger sub stantially parallel with said plate and projecting over the head of the blank, said finger being yieldingly mounted so as to pass over the head of a blank while said pusher is being moved in one direction.
23. Ina threading machine; a .pair of dies, one of which is movable; a chute mechanism terminating at a point distant'from the movable die; transfer means for moving a blank from the chute'mechanism to said dies and comprising in part a pusher actuated by yielding means while it is in en- 1 8. In a threading machine; a pair of dies, gagement with the" blank; a finger substanone of which moves in a reciprocatory path; a cam connected therewith; a chute mechanism, terminating at a oint distant from the movable die: trans er mechanism for moving the blank from the chute mechanism to said dies, comprising in part a pusher; yielding means for actuating said pusher, during its movement ,toward said movable die; and means actuated by said cam for moving the same in the opposite direction.
19. In a threading machine; a pair of dies, one of which is movable; a chute mechanism terminating. ata point distant from the movable die; transfer means for moving a blank from the o te mechanism to said dies and comprising in part a pusher actuated by yielding means while it is in engagement with the blank; and yielding means for applying pressure to the blank to insure its engagement'between the dies that 1s moved in one direction by the blank while being transferred from the chute to the dies.
20. In a threading machine; a pair of dies, one of which is movable; a chute mechanism terminating at a point distant from the movable die; transfer means for moving a blank from the chute mechanism to said dies and comprising in part a slide; cam means for moving said slide in a path toward and away from said dies; yielding means for moving said slide in the opposite direction; and a pusher connected with said slide which during its movement passes in front of said chute mechanism.
21. Ina threading machine; a pair of dies, one of which is movable: a chute mechanism terminating at a point distant from the movable die; transfer means for moving a blank from the chute mechanism to said dies and comprising in part a pusher actuated by yielding means while it is in engagement with the blank; and a finger substantially parallel with said plate and projecting over the head of the blank. r Y
22. In a threading machine; a pair of dies. one of which is movable; a chute mechanism terminating at a point distant from tiallyparallel with said plate and projecting over the head of the blank; and means for mounting said finger whereby its position relatively to the plate may be varied.
' 24. In a'threading machine; a pair of dies,
one ofwhi'ch is movable; a chute mechanism terminating at a point distant from the movable die; transfer means for moving a blank from the chute mechanism to said dies and comprising in part a pusher actuated by yielding means while it is in engagement with the blank; a finger substantially parallel with said plate and projecting over the head of the blank; and means for moving said finger relatively to the pusher the same as 1n one of its relative positions.
25. In a threading machine; a pair of dies, one of which is movable; a chute mechanism terminating at a point distant from the movable di'e; transfer means for moving a blank from the chute mechanism to said dies and comprising in part a pusher actuated by yielding means while it is in engagement with the blank; a finger substantially parallel with said plate and projecting over the head of the blank; and adjustablemeans for moving said finger relatively to the pusher when the same is in one of its relative positions.
26. In a threading machine; a pair of dies, one of which is movable; a chute mechanism terminating at a point distant from the movable die; transfer means for moving a blank from the chute mechanism to said dies and comprising in part a slide; cam means for moving said s ide in a path toward and away from said dies; yielding menus for moving said slide inthe opposite direction; a pusher connected with said slide which during its movement passes in front of said chute mechanism; and means for holding said slide against movement in one of its "posit-ions.
27, In a threading machine, a pair of dies, one of which is movable; a chute mechanism terminating at a point distant from the movable die; transfer means for moving a :blank from-the chute mechanisn'i to said dies and comprising in part a slide; cum means for moving said slide in a path toward and .away. from said dles; yielding means for moving said slide 1n the opposite Clll'QL'tlOIlL a pusher connected with said slide which during, its movement passes iii-front of said chute mechanism; and means 'foi holdi'ng said. slide against movement in one. of its opening in a 'fixed part when said plunger positions, comprising a plunger 'n'iorably mounted 1n said slide and projected into an is m register therewith.
28. In a threading machine; a pair of dies; a hopper mechanism; means for guiding blanks from the hopper mechanism to the travel by gravity in substantially the same dies, all arranged so that blanks will travel by gravity in substantially the same plane and at an angle'to the horizontal from thehopper to and between said dies and until disc arged therefrom; and yielding means; applying pressure to the blank to insure itsengagement between the dies, comprising" a' pusher, having a nose thereon in aZpl-ane between the faces of. the dies, and a spring for moving the same in one direction.-
29. In a threading machine; a pair of dies; a hopper mechanism; means for guiding blanks from the hopper mechanism to the dies, all arranged so that blanks will plane and. at an angle to the horizontal from the hopper to'and between said diesv and until discharged therefrom; and yielding means applying pressure to the blank to V insure its engagement between the dies, comprising a pusher, havinga nose thereon in a planeib'etween the faces of the dies and an inclined face adjacent thereto terminating at said nose, and a spring for moving the same in one direction.
30. In a device of the character described; delivery mechanism wherein blanks travel in two paths, one being at substantially a right angle to the other; and means for in 'suring the relative alignment of the blanks while passing the angle of said path, comprising in part-a latch which projects into one of saidpathsand is moved to its retracted position by the. blank while moving thereby. 1
31. In a device of the character described;
delivery mechanism wherein blanks travel in two paths, one being at substantially a right angle to the other; means for insuring the relative alignment of the blanks while pass-' ing the angleof said path, comprising in part a latch which projects into one of said.
aths and is" moved to its retracted positions y the blank while moving thereby; and means/for applying pressure to the blank during a portion of its movement'through said path.
32. In a device of the character described;
delivery mechanism wherein blanks travel in two paths, one being at substantially a right angle tothe other; means for insuring the relative alignment of the blanks while passing the angle of said path, comprising in part a latch having a rounded head which projects into one of. saidpaths and is moved to its retracted position by the blank while moving thereby. I
33. In a device of the character described; delivery mechanism wherein blanks travel'in two paths, one being at substantially-a right angle to the other; .means for insuring the relative alignment of the blanks while passing the angle of said path, comprising in part a latch which projects into one of said paths and is moved to its retracted position by the blank while moving thereby; and yielding means for moving said latch from its retracted position.
34. In a device of the character described;
delivery mechanism, comprising in part a plate having a. notch formed in the corner thereof formed by two of its faces.
I .35. In a device of thefcharacter described delivery "mechanism, comprising in part a. plate having an undercut notch formed in the corner thereof formed by two of its faces. 36.- In a device of the character described; delivery mechanism comprising in part a .plate having a notch formed in the corner thereof formed by two of its faces, the face of the notch being at an angle tolboth'of the adjacent faces. of the plate. I
37. In a device of the character described; delivery mechanism comprising in part a plate having a notch in one corner thereof formed'by two of its faces; a latch movably connected thereto at one end below the notch;
and a spring which exerts its tension against the latch so as to move. the same into a position where it projects beyond the end of said plate.
ion
. 38. In a threading machine; a pair of dies; a hopper mechanism; means for guiding blanks from the hopper mechanism to the dies, all arranged so that the blanks will travel by gravity in'substantially the same plane and at an an le to the horizontal from the hopper to an between said dies and until discharged therefrom; yielding means applying pressure to the blank to insure its engagement between the dies, comprising a pusher, haying a nose thereon in a plane between the-faces of the dies; a spring plying pressure to the blank to insure its engagement between the dies, comprising a pusher,- having a nose thereon in a plane 1 between the faces of the dies and held out of the path of travel of the blank to the dies the dies, all arranged so that blanks will travel by gravity in substantially the same plane and at an angle to the horizontal from the hopper to and between said dies and until discharged therefrom; yielding means applying pressure to the blank to insure its engagement between the dies, comprising a pusher, having a nose thereon in a plane between the faces of the dies; a spring for moving the same in one direction; and positive means for moving the same in the 0 posite direction, comprising'a rock member iaving operative engagement with said yielding means and actuated in timed relation with the movement of said blank.
In testimony whereof, I have hereunto affixed my signature.
RICHARD LESTER WILCOX.
US731152A 1924-08-09 1924-08-09 Threading machine Expired - Lifetime US1584264A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2464883A (en) * 1945-06-04 1949-03-22 Milwaukee Thread Rolling Compa Thread rolling machine
US2596962A (en) * 1949-07-19 1952-05-13 Illinois Tool Works Thread rolling machine
US3068991A (en) * 1959-06-05 1962-12-18 Daniel H Prutton Vibratory feeder and orientor of articles such as screw blanks
US3191423A (en) * 1964-07-13 1965-06-29 Hartford Special Machinery Co Feed device for thread rolling machines and the like
US3851513A (en) * 1973-01-22 1974-12-03 Textron Inc Feed mechanism for a thread roller
US3879976A (en) * 1973-12-14 1975-04-29 Hartford Special Machinery Co Starter slide and blade assembly for thread roller
DE2733013A1 (en) * 1976-12-20 1978-06-22 Nedschroef Octrooi Maats METHOD AND DEVICE FOR SIGNALING AND SORTING INCORRECTLY ROLLED PRODUCTS ON THREAD ROLLING MACHINES

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2464883A (en) * 1945-06-04 1949-03-22 Milwaukee Thread Rolling Compa Thread rolling machine
US2596962A (en) * 1949-07-19 1952-05-13 Illinois Tool Works Thread rolling machine
US3068991A (en) * 1959-06-05 1962-12-18 Daniel H Prutton Vibratory feeder and orientor of articles such as screw blanks
US3191423A (en) * 1964-07-13 1965-06-29 Hartford Special Machinery Co Feed device for thread rolling machines and the like
US3851513A (en) * 1973-01-22 1974-12-03 Textron Inc Feed mechanism for a thread roller
US3879976A (en) * 1973-12-14 1975-04-29 Hartford Special Machinery Co Starter slide and blade assembly for thread roller
DE2733013A1 (en) * 1976-12-20 1978-06-22 Nedschroef Octrooi Maats METHOD AND DEVICE FOR SIGNALING AND SORTING INCORRECTLY ROLLED PRODUCTS ON THREAD ROLLING MACHINES

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