US1114846A - Machine for forming loops on coiled springs. - Google Patents

Description

C. R. BARRETT & E. A. SAMUEL. MACHINE FOR FORMING LOOPS 0N GOILED SPRINGS.

APPLICATION FILED FEB. 13, 1014. 1,1 14, 4 Patented 0ct.27,1914.

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R (Zarles fiarr'ez'fi G. R. BARRETT & E. A. SAMUEL. MAOHINE ron FORMING LOOPS on comm spams.

APPLICATION FILED FEB. 13, 1914. 7 1,1 14,846, Patented Oct. 27, 1914.

5 SHEETS-SHEET 2.

G. R. BARRETT & E. A. SAMUEL.

MACHINE FOR FORMING LOOPS 0N OOILED SPRINGS. APPLICATION rum) r112. 13, 1914.

1,1 14,846. Patented Oct. 27, 1914.

5 BHEETS-SHEET 3.

D SPRINGS.

APPLICATION FILED PEI B. 13, 1914.

Patented Oct. 27, 1914..

R Q r W Z, w M m W65 g2 Q wfiwww a wv NAFRQUM MN 6 M 8 M 4 1 m 1 wk G. R. BARRETT & E. A. SAMUEL. MACHINE FOR FORMING LOOPS 0N OOILED SPRINGS. IIIIIIIIIIIIIIIII 13.13, 1914.

1,1 14,846, Patented Oct. 27, 1914.

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cIInaL'Es It. BARRETT AND EMIL a. sAMUfEL, or CHICAGO, ILLINOIS; SAID SAMUEL;

ASSIGNOB 'ro saIn BARRETT. I

- MACHINE FOR FORMING LbOPS ON COILED SPRINGS.:

is aspecification,

This invention relates to machines for forming loops on coiled springs, and in which' a portion of each end coil of the spring' is bent into right-angle relation to the body portion of the spring toprovide an attaching hook or loop for the same.

An example of such machine is the subject matter of Letters Patent No. 971,238, dated September 27, 1910, to Charles R. Barrett. And; the present improvement has for its object to provide a simple and automatically operating mechanism by which sections of coiled springs are fed to a pair of alternately operating loop-forming appliances adapted to bend the respective end coils of the section of spring operated on, into attaching, hooks or loops.

A further ob ect 1s to provide means for automatically turning the section of spring, and to attain a correct positioning of the end coils of, the same with relation to the loop-forming appliances, and thus insure the formation of loops or hooks on said sec-' tion of coiled spring in an effective and perfeet manner,. all as will hereinafter more fully appear.

1n the accompanying drawings: Figure 1 'is'a plan view illustrating the general arrangement of parts in the present invention. Fig. 2 is a longitudinal section on line 50-11:, Fig. -1. Fig. 3 is an enlarged transverse section on line m'-m,, Fig. 2. Fig. 4 is a detail perspective view of the section of coiled spring, as fed to the machine, and before the loop-forming operation. Fig. 5 is a similar view of said section of spring after the loop-forming operations have taken place. Fig. 6 is a fragmentary top view of theunder and front portion of the machine, the. can ying frame, etc., of the rotary loopforming heads being removed. Fig. 7 v is a detail elevation of one of the spring positioning mandrels, and some of its accessories.

Specification of Letters Patent. Application filed February 13. 1914. Serial No. 818.698.;

Patented Oct. 27, 1914.

Fig. 8 is a detail sectional view of the same.' .Fig. 9 is an elevation of the sleeve or head :of the other positioning mandrel. Figa l0 55 is a detail sectional elevation of the last f imentioned positioning mandrel, and some oi its accessories. Fig. 11 is a detail plan-- view of the same. Fig. '12 is an enlarged ifragmentary longitudinal section of the '-front portion of the machine, on line M,

Fig. 1. Fig. 13 is a detached perspective' ;view of the upper sliding carrier and one' of the upper spring-holding jaws. Fig. 14 ;is a detail perspective view of the front por- Ztion of the carrying head of the aforesaid jupper sliding carrier and its accessories. I

Similar reference numerals indicate like parts in the several views.

Referring to the drawings, 1- represents the supporting bed or base plate of the ma chine, upon which is carried the series of standards and pedestals of the present mechanisms, as follows: 2 are a pair of standards centrally disposed at the rear of the bed 1, and provided with bearings forthe primary driving shaft 3, and for the lower longitu'-' dinal counter-shaft 4, of the" present mecha- 'nism. 5 is 'a pedestal centrally disposed atthe mid-length of the bed 1, and provided with hearings for the upper longitudinal" countershaft 6, and with a guideway for the longitudinally reciprocating carrying head 7,of the upper spring-holding jaws hereinafter described. 8 is a pedestal centrally disposed at the forward end of the bed 1, and provided with a bearing for the forward end of the above-mentioned countersh'a'ft'4, and with guideways for the longitudinally reciprocating slide 9 ot the preliminary feeding mechanism by which the springs are serially fed to the pair of loopforming appliances. 10 are a pair of pedestals secured to the bed 1, in lateral relation to] the loop-formingappliances above referred to, and provided with slideways for: the hea'dstocks 11. in which are journaled the hereinafter described rotary and transversely reciprocating spring positioning mandrels 12 and 13, of the present invention. 14 are a'pai'r of standards disposed in adjacentparallel relation to the pedestals 10,

45 rear end inar described cams by which reciprocation is imparted to the headstocks 11 of the spring positioning mandrels 12 and 13 above referred to. 17 is a feeding chute secured to the pedestal 8,in a transverse and inclined direction,'and adapted to contain a supply of the sections of coiled springs to ac operated on; 18 is an inclined bar secured to and reciprocating with the slide 9, above rem ferred to, and provided with a spring finger 19 and a stop finger 20, arranged in separated relation, and extending longitudinally 7 into the' path of the sections of coiled springs contained in the feeding chute 17.

s In the operation'of such parts, a section of coiled spring normally rests against the stop finger 20, while the next ad acent section of coiled spring is yieldingly held by the spring finger 19. With a forward travel '20 of the parts along with the automatically actuated slide 9, the stop finger 20 moves from beneath its section of coiled spring, and permits-the same to slide down against a lateral stop plate 21 carried by the slide 9,

aforesaid, and onto theinitial feeding mechanism hereinafter described. During such forward travel of the parts, the spring finger19maintains yielding holdingengagement with its section of coiled spring, to prevent any downward movement of the same.

With a succeeding rearward movement of the aforesaid parts, the stop finger 20 moves into the path of the sections of coiled springs in the chute 17 and the spring finger 19 95 moves out of engagement with its section of coiled spring, allowing the same to slide down upon the stop finger 20, for a repetition of the cycle of operations just described 22 is a longitudinally disposed carrier pivoted at its forward end in the slide 9 tion during the main portion of the rearward travel of said carrier 22. In the present construction the rear portion of the aforesaid recess in the slide 9, is cut away at J 24:, to permit a downward pivotal movement of the carrier 22, as the section of coiled spring is taken from said carrier by the hereinafter described forward pair or holding jaws of the loop-forming appliances. 25 is a spring tending to yieldingly maintain the carrier 22 in its normally horizontal position.

26 is a cam wheel on the forward end of the lower countershaft d, for operative enga ement witha cam stud on the slide 9,

W an adapted to impart an. intermittent re-,

aria-nae ciprocation to said slide, in the practical operation of the mechanism.

27 is an anvil or projection extending rearwardly from the pedestal 8, and having a horizontal face upon which the sections of coiled springs move rearwardly and are held during the loop-forming operations hereinafter described; l

28 and 29 are abutment lugs located at opposite sides of the anvil 27, and disposed in longitudinal spaced relation to each other, so as to be in operative and individual relation to the pair of loop-forming heads and accessories hereinafter described. The abutment lugs 28, 29 are adapted to form stops for the adjacent ends of the sections of coiled springs, while the same are circularly positioned, and while theend coils of said sections are bent at right-angles to the main portions of said sections, as hereinafter more fully described.

30 is the movable upper jawof the first pair of. holding jaws of the present construction. Said jaw 30 is attached to a vertically sliding head 31, which has movement in a suitable guide opening in the longitudinally sliding head 7 heretofore described. The vertically sliding head31 is common to the said upper jaw 30 of the first pair of holding jaws, and to a counterpart movable upper jaw of the second pair of holding aws, hereinafter described. And the connection of said jaws to the sliding head 31 is preferably of an adjustable nature and.

attained by means of the usual guide grooves, guide slotsrandholdmg bolts, as shown.

32 is a spring interposed between the car-- rying head 7 and the sliding head 31, and adapted to yieldingly move the head 31 in an upward direction.

33 is a cam. disk secured to the forward end of the upper countershaft 6, and-having bearin against the cam roller 34 -carried-by the sliding head 31, and adapted to impart vertical movement-to the same in a. downward direction; 'Movement in an upward direction is attained by the-spring 32, above described.

35 is a cam wheel near the rear end of the upper countershaft 6, having engagement with a cam stud 36 on the slide 7, and adapted .to impart positive intermittent reciprocation to said slide.

37 is the movable upper jaw of the second.

pair of holdingjaws of the present construction. Said jaw 37 is a counterpart of piece construction and in detail comprise I a main body portion 38, formed with a series of upwardly extending bars or teeth 39,

preferably three in number as shown, and

pressing said jaws after the same are raised by the cam disk 40, aforesaid.

, In the present construction, the countershafts 4 and 6, before described, receive simultaneous rotation from the primary driving shaft 3, through pinions 43 and 44 on said shaft 3, which pinions mesh with and impart motion to gear wheels 45 and 46 on the respective countershafts 4 and 6, as shown .in Fig. 2.

47 and 48 are. a pair of loop-forming heads disposed in spaced lateral and longitudinal relation to each other, so as to be individual to the respective first and second pairs of holding jaws 30, 37 and 38, heretofore described. Said loop-forming heads comprise main body portionsor hubs 47, 48, and radial bending jaws 49, 50, which are adapted to revolve in circular paths. The

. function and operation of the bending jaws 49, 50 is similar to that of the bending jaw of the aforesaid Barrett Patent No. 971,238, and as in said patented construction, said bending jaws are adapted to engage the outer coils of the section of coiled spring operated on, and bend said end coils at right-angles to the body of the coiled spring, to provide attaching loops or hooks at the respective ends of said coiled spring section.

51 and 52 are the carrying shafts of the loop-forming heads 47, 48, aforesaid. Said shafts are journaled in the lower ends of pairs of vertical bracket plates 53, 54, secured at their upper ends to the standard 5, in a laterally adjustable manner, by bolts and elongated slots, as illustrated more particularly in Fig. 3.

55 and 56 are two trains of gear wheel s,

by means of which rotation in opposite direction is transmitted from the countershaft 4,:to the carrying shafts 51 and 52 of the loop forming heads .47, 48 above described.

The pair of spring positioning mandrels 12 and 13 heretofore referred to, are disposed in spaced longitudinal relation to each other, so as to have individual operative relation to one another of the pairs of holding jaws 30, 37 and 38, and loop-forming heads 47 48 aforesaid, and in the present improvement have a detail construction as follows 57 is a sleeve having sliding movement on a reduced inner end of the positioning mandrel 12 and held from independent rotation thereon by a pin 58, and elongated slot 59, as illustrated more particularly in Figs. 7 and 8. The inner and free end of said sleeve 57 is adapted to engage in the bore of the section of coiled spring operated on, and with a view to attain proper. frictional engagement of the parts, said inner end of the sleeve 57 will be of the conical form shown in Figs. 7 and 8. 60 is a spring tending to yieldingly force the sleeve 57 into the above described frictional engagement with the section .of coiled spring operated on, and so that in the norand rotation of the positioning mandrel 12,

the said sleeve 57 Wlll cause a partial rotation of the spring section operated on, until the extreme end of an outer coil of said spring section is brought against an edge of the abutment ing 28, which prevents further rotation of the spring section, and insures its proper position for the subsequent loopforming operation of the loop-forming head 47-49, aforesaid. 61 is a head or sleeve having sliding movement on a reduced inner end of the positioning mandrel 13. Said sleeve 61 is held on said mandrel by a transverse pin 62, intersecting an elongated peripheral groove 63, in the mandrel, as

shown in Fig. 10, the construction being adapted to permit of an independent rotation of the sleeve, as well as a limited longitudinal movement of the same. 64 are friction serrations formed in the face of an enlarged rear portion of the sleeve 61, which are adapted for frictional engagementwith spring friction studs or plugs 65, carried by the mandrel 13, as shown on Figs. 10 and 11. Such construction is adapted to permit a continued and independent rotation of the mandrel 13, when in the operation of the mechanism, the sleeve 61 is forcibly held from rotation. 66 is a ratchet formation on the front and free end of the sleeve 61, and adapted to engage the loop or hook of the section of coiled spring operated on, and as illustrated in Fig. 10. With the described construction, the normal rotation of the positioning mandrel 13 is adapted to impart a partial rotation to the section of coiled sprin operated on, and until the extreme end 0 the outer coil at the other end of said section of coiled spring is brought against an edge of the abutment lug 29, which in turn prevents any further rotation of said spring section and insures its proper position for the subsequent and final loop or hon: forming operation of the loop-form- 'ing head 4850, aforesaid. 67 is a bevel gear carried by the countershaft 4, and having operative engagement with bevel gears 68, 69, on the inner ends of the transverse cam shafts 15 and 16, heretofore described. 70, 71 are gear wheels carried on the outer grooves of which have operative engagement with cam studs '76, 77 on the reciprocating headstocks 11 of the positioning mandrels 12 and 13, to impart limited intermittent reciprocation to the same.

The operation of the present machine is as follows: Sections of coiled springs of the required length are serially released from the feeding chute 17, by the intermittent operation of the spring and stop fingers 19 and 20, as heretoforefdescribed in detail. The section of coiled spring as released, descends against the lateral stop plate 21, and is received by the concave rear end of the carrier 22, and in the rearward reciprocation of the carrier is carried back into osition beneath the upper movable jaw 30 o the first pair of holding jaws, and is in turn engaged and held thereby. Immediately previous to such engagement, the first positioning mandrel 12 reciprocates transversely to bring its sleeve 57 into frictional engagement Wlth the section of coiled spring, to cause a partial rotation of the same and attain the required positioning, as heretofore set forth in dethetail. 7 Immediately following such positioning of the section of coiled spring, the afore said first pair of holding jaws come into holding engagement with said section of coiled spring, and following such holding eng ement, the radial bending jaw 49 of st loop-forming head 47, engages an outer coil at the other end of said section of coiled spring, and bends the same overthe abutment lug 28, into right-angle relatlon, and provides the required sprmg-attaching loop or hook, as heretofore set forth in the description of the mechanism. The upper holding jaw 30 of the first pair of holding jaws, through the rearward movement of the reciprocating carrying head 7 then moves said section of coiled spr1ng backward along the anvil 27, and leaves said section of springin the engaging zone of the second pair of holding aws 37-39. The second positioning mandrel 13 then reclprocates, transversely, to bring its sleeve 6 1 into engagement with the loop or hook previously formed on the section of coiled sprmg, to cause a partial rotation of said spring section, and attain the requlred "f positioning heretofore described. edlately. following such second positioning of the section of coiled ring, the aforesaid second pair of holding aws are brought intoholding engagement with said section ofcolled spring, and follog such holding engagement, the radial bending jaw 50 of the second loopro a head 48, engages the outer coil at tions. of coiled airaeae the other end of said section of coiled spring, 7

r operations contmumg durlng the practlcal use of the machine, and with the completed springs being automatically discharged at the rear endof. the anvil 27.

Having thus fully described our said invention, what we claim as new and desire to secure by Letters Patent, is s 1. A mechanism for forming-loops on secchute, a longitu ally reciprocating carrier,

rier and provided with a lateral abutment,

spirl'lings, comprising a feeding a rotary looper head arranged above said anvil, and means for operating the carrier and er head in unison, substantially as set forth. i

2]. A mechanism for forming loops on sections of coiled springs, comprising a feeding chute, a longitudinally reciprocating carrier, a spring finger and a stop finger associated with said chute in spacedrelation and moving with said carrier, an anvil disposed to the rear of said carrier and provided with a lateral abutment, a looper head arranged above said anvil, and means for ,operat.1ng

rotation to the section of spring operated on,

a looper head arranged above the anvil aforesaid, and means for operatingthecarrier, looper head and positioning means in unison, substantially as set forth. 7

4:. A mechanism for forming loops on sections of coiled springs, comprising a feeding chute, a longitudinally reclprocating carrier,

an anvil disposed to the rearof said carrier and provided with a lateral abutment, a laterally disposed positioning means adapted for operative engagement with an end of 'ed to impart. partial rotation thereto, a looper head arranged above the anvil aforesaid, and means for operating the carrier, looper head and positionin means in unison, substantially as set fort 5. A mechanismfor forming loops on sections of coiled springs, comprising a feeding chute, a longitually reciprocating carrier, a spring er and a stop finthe section of springoperated on and adapt- 100 the carrier and looper head in 111118011, sub- V ger associated with said chute in spaced relation and moving with said earner, an anv11 disposed to the rear of said carrier and provided with a lateral. abutment, a positioning means adapted to impart a partial rotation to the section of spring operated on, a looper head arranged above the anvil aforesaid,-and means for operating the carrier, looper head and positioning means in unison, substantially as set forth.

6. A mechanism for forming loops on sections of coiled springs, comprising a feeding chute, a longitudinally reciprocating carrier, a spring finger and a stop finger associated with said chute in spaced relation and moving with said carrier, an anvil disposed to the rear of said carrier and provided with a lateral abutment, a laterally disposed positioning means adapted for operative engagement with an end of the section of spring operated on and adapted to impart partial rotation thereto, .a looper head arranged above the anvil aforesaid, and means for operating the carrier, looper head and positioning means in unison, substantially as set forth.

7. A mechanism for forming loops on sections of coiled springs, comprlsing a feeding chute, a longitudinally reciprocating carrier, an anvil disposed to the rear of said carrier and provided with a lateral abutment, a laterally dis osed positioning means comprislng a revo uble and laterally reciprocatmg mandrel and a sleeve'on the end of said mandrel adapted for operative engagement with an end of the section of the spring operated on and adapted to impart partial rotation thereto, a looper head arranged above the anvil aforesaid, and means for operating the carrier, looper head and positioning means in unison, substantially as set forth.

8. A mechanism for forming loops on sections of coiled springs, comprising a feeding chute, a longitudinally reciprocating carrier, a spring finger and a stop finger associated with said chute in spaced relation and moving with said carrier, an anvil 7 dis osed to the rear of said carrier and provi ed with a lateral abutment, a laterally disposed positioning means comprising a revoluble and laterally reciprocating mandrel and a sleeve on the end of said mandrel adapted for operative engagement with an end of the section of spring operated on and adapted to impart partial rotation thereto,

' a looper head arranged above the anvil aforesaid, and means for operating the carrier, looper head and positioning means in unison, substantially as set forth. a

9. A mechanism for forming loops on sections of coiled springs, comprising a feeding chute, a longitudinally reciprocating carrier, an anvil disposed to the rear of said carrier and provided with a lateral abutment, a rotary looper head arranged above said anvil, .a pair of vertically movin holding jaws associated with said anvil, and a .sections of coiled springs, comprising a feeding chute, a longitudinally reciprocating carrier, a spring linger and a stop finger associated with said chute in spaced relation and moving witlrsaid carrier, an anvil disposed to the rear of said carrier and provided with a lateral abutment, a looper head arranged above said anvil, a pair of vertically moving holding jaws associated with said anvil, and means for operating the carrier, looper head and holding jaws in' unison, substantially as set forth.

11. A mechanism for forming loops on sections of coiled springs, comprising a feeding chute, a longitudinally reciprocating carrier, an anvil disposed to the rear of said carrier and provided with a lateral abutment, a rotary looper head arranged above said anvil, a positioning means ada ted to-impart partial rotation to the section of spring operated 011,..a pair of vertically moving holding jaws associated with said anvil, and means for operating the carrier, looper head, positioning means and holding jaws in unison, substantially as set forth.

12. A mechanism for forming loops ,on sections of coiled springs, comprising a feeding chute, a longitudinally reciprocating carrier, an anvil disposed to the rear of said carrier and provided with a lateral abutment, a rotary looper head arranged above said anvil, a laterally disposed positioning means adapted for operative engagement with an end of the section of spring operated on and adapted to impart partial rotation thereto, a pair of vertically moving ,holding jaws associated with said anvil, and

means for operating the carrier, looperhead, positioning means and holding jaws in amson, substantially as set forth.

13. A mechanism for forming loops on sections of coiled sprin s, comprising a feeding chute, a longitu inally reciprocating carrier, an anvil disposed to the rear of said carrier and provided with a lateral abutment, a rotary looper head arranged above said anvil, and means for operating the carrier and looper head in unison, arranged above said anvil, a laterally disposed positioning means adapted for operative engagement with an end of the section of spring operated on and adapted to impart partial rotation thereto,a pair of vertically moving holding jaws associated with said anvil, and means for operating the carrier, looper head, positioning means and holding jaws in unison, substantially as set forth.

14. A mechanism for forming loops on said anvil, a laterally disposed pos'itio hill tithand holding jaws in unison, substantially as set forth.

'hol jaws associated with said anvil,

nal reciprocation to the upper hol jaw,

sections of wild sprin sections of coiled springs, comprising a feeding chute, a longitudinally reciprocating carrier, an anvil disposed to the rear of said carrier and provided with a lateral abutment, a rotary looper head arranged above said-anvil, a pair of vertically moving holding jaws associated with said anvil, means for imparting intermittent longitudinal reciprocation to the upper holding jaw, and means for operating the carrier, looper head 15. A mechanism for forming loops on sections of coiled springs, comprising a feeding chute, a longitudinally reciprcmting carrier, a spring finger and a stop finger as+ sociated with said chute in spaced relation" and moving with said carrier, an disposedto the rear of said carrier and provided with a lateral abutment, a looper head arranged above said. anvil, a pair of vertically moving holding jaws associated with said anvil, means for imparting intermittent longitudinal reciprocation to the upper holding jaw, and means for o crating the carrier, looper head and hol jaws unison, substantially .as set forth.

- lfizd. -Hlt forming loops on sections of coiled springs, comprising a feeding chute, ,a longitudinally reciprocating carrier, an anvil disposed to the rear of said carrier and provided with a lat abutment, a rotary'looper head arranged above said anvil, a ositloning means adapted to impart partia rotation to a section of spring operated on,.a pair of vertically moving hol jaws associated with said anvil, means for imp intermittent longitudinal reciprocation to the upper hol m jaw, and means for operating the carrier, looper head, positioning means and holding jaws in. unison, substantially as set forth, V

lid mechanism for forming loops on sections of coiled springs, comprising a feeding chute, a longitudinally reciprom carrier, an anvil disposed tothe rear of said carrier andprovided with a lateral abutment, a rotary looper head arranged above ms adapted for operative engaent with an end of the section at spring operated on and adapted to impart'p' lrotation thereto, a pair of vertiwlly moving means for imparting intermittent longitudi-' and means for operating the carrier, loopern head, positio meansand holding jaws in compr a deedute, a: tit a 1 y reciprcca cnrriena sp finger and a stop finger as-; anointed with said chute in spaced. relation and meg with said carrier, an anvil disv other, means for intermittentlyteeding sections of coiled springs. along said anvil, pairs 12o almanac posed to the rear of said carrier and provided with a lateral ahumoent, a looper' head arranged ahove saidanvil, a. laterally disposed positioning means adapted for operative engagement with an end. of the section of spring operated on and adapted to impart partial rotation thereto, a pair of vertically moving holding jaws associated; with said 7 anvil, means for imparting intermittent longitual reciprocatlon to the upper holding aw, and means for operating the carrier, looper head, positio meansand holding jaws in 11, substantially as set forth.

19. h me "twa for forming loops'on sections of coiled anvil ha lateral abutment lugs, a pair of loop-to headsassociate'd with said anvil and disposed one in advance of the other, means for intermittently feeding sections of coiled springs along said'anvil, and

means for hol l 1 said sections or spring d the operation of the loop-forming hmds, ntially asset forth.

21th mec .m-m for to .loops on sections of coiled sp comprising an lateralahutment lugs, a pair ot loop-to wig heads associated with said anvil and one in advance of the other, mfor intttently feeding sections of coil springs along said anvil, a5 pairs of individual holding jaws disposed one inn dvanceot the other, and means for opera the .1- m loop-forming heads and holg jaws in unison, substan-J- t-ially as set tortln sew ons of coiled springs, comprlslng an anvil it my lateral abutment-lugs, a pair ot loop-to 'mnheads associated with said anvild loosed one in advance of the other, m ;or.intermittcntly f sec- 7 fions ot coiled springsalo said anvil, duplicate po m; m :apted to impart to m rotation "to the sections of sp a to (l on, and means for holding 11o saidsections of springs d the operation ot t'ue loop-tog heads, substantially asset Mt I v.

22. h mech for fog loops on sections of coiled ug comprising an vil ha Ill lateralabuent lugs, a pair of loop-to heads associated with said vil M disposed one in advance-0t the unison, substantially as set forth. it jaws, and m tor-oper- 18. A t H n for forming loops on means, loop-tor heads s l loops on sechons oi? mllledll'm -e mm p ing .chnte, a lon'gitny recioca inc springs," comprising an 80 t awsmums'on, substantially as ment lugs, a pair of loop-forming heads arranged above said anvil and disposed one in advance of the other, and means for operating the carrier and loopler heads in unison, substantially as set fort 24. A mechanism for forming loops on sections of coiled springs, comprising a feeding chute, a longitudinally reciprocating carrier, a spfiing finger and a stop finger associated wi' said chute in spaced relation and moving'with said carrier, an anvil disposed to the rear of said carrier and provided with lateral abutment lugs, a pair of loop-forming heads arranged above said anvil and disposed one in advance of the other, and means for operating the carrier and looper heads in unison, substantially as set forth.

25.'A mechanism for forming loops on sections of coiled springs, comprising a feeding chute, a longitudinally reciprocating carrier, an anvil disposed to the rear of said carrier and provided with lateral abutment lugs, a pair of positioning means adapted to impart partial rotation to the sections of springs operated on, a pair of loop-forming heads arranged above said anvil and disposed one in advance of the other, and means for operating the carrier, looper heads and positioning means in unison, substantially as set forth.

26. A mechanism for forming loops on sections of coiled springs, comprising a feeding chute, a longitudinally reciprocating carrier, an anvil disposed to the rear of said carrier and provided with lateral abutment lugs, a pair of longitudinally disposed positioning means adapted for operative engagement with ends of the sections of springs operated on to impart partial rota.- tion thereto, a pair of loop-forming heads arranged above said anvil and disposed one in advance of the other, and means for operating the carrier, looper heads and positioning means in unison, substantially as set forth.

27. A mechanism for forming loops on sections of coiled sprin ,comprisingea feeding chute, a longitu inally reciprocating carrier, a spring finger and a stop finger associated with said chute in spaced relation and movingwith said carrier, an anvil disposed to the rear of said carrier and provided with lateral abutment lugs, a pair of positioning means adapted to impart partial rotation to the sections of springs operated on, a pair of loop-forming heads arranged above said anvil and disposed one in advance of the other, and means for operating the carrier, looper heads and positioning means in unison, substantially as set forth.

28. A mechanism for forming loops on sections of coiled springs, comprising a feeding chute, a longitudinally reciprocating carrier, a spring finger and a stop finger associated with said chute in spaced relation and moving with said carrier, an anvil disposed to the rear of said carrier and provided with lateral abutment lugs, a pair of laterally disposed positioning means adapted for operative engagement with the ends of sections of springs operated on to impart partial rotation thereto, a pair of loop-forming heads arranged above said anvil and disposed one in advance of the other, and means for operating the carrier, looper heads and positioning means in unlson, subv stantially as set forth.

29. Amechanism for forming loops on sections of coiled springs, comprising a feeding chute, a longitudinally reciprocating carrier, an anvil disposed to the rear of said carrier and provided with lateral abutment lugs, a pair of loop-forming heads arranged above said anvil and dis osed one in advance of the other, a pair 0 laterally disposed positioning means comprising revoluble and laterally reciprocating mandrels and sleeves on the ends of said mandrels for operative engagement with the ends of the sections of springs operated on and adapted-to impart partial rotations thereto, and means for operating the carrier, looper heads and positioning means in unison, substantially as set forth.

30. A mechanism for forming loops on Isections of coiled springs, comprising a feeding chute, a lon itudinally reciprocating carrier, a sprin" finger and a stop finger associated with said chute in spaced relation and moving with said carrier, an anvil disposed to the rear of said carrier and provided with lateral abutment lugs, a pair of loop-forming heads arranged above said anvil and disposed one in advance of the other,

a pair of laterally disposed positioning means comprising revoluble and laterally reciprocating mandrels and sleeves on the ends of said mandrels for operative engagementwith the ends of sections of springs operated on and ada ted to impart partial rotation thereto, an means for operating the carrier, looper heads and positioning means in unison, substantially as set forth.

31. A mechanism for forming loops on sections, of coiled springs, comprisingafeeding chute, a longitudinally reciprocating carrier, an anvil'disposed to'the rear of said carrier and provided with lateral abutment lugs, a pair of loop-forming heads arranged above said-anvil and disposed one in advance of the other, a pair of vertically moving holding jaws associated with said anvil, and means for operatingthe carrier,looper heads and holding jaws in unison, substantially as set forth.

32. A mechanism for forming loops on sections of coiled springs, comprising a feedsaid carrier and provided with lateral ahutthe other, a pair of vertically moving chute, a longitudinally reciprocating carrier, a spring finger and a stop finger as sociated with said chute in spaced relation andmoving with said carrier, an anvil disposed to the-rear of said carrier and provided with lateral abutment lugs, a pair 0t loop-forming heads arranged ahove'said .anvil and disposed one in advance of the other, a pair of vertically moving holding jaws associated with said anvil, and means or operating the'car'rier, looper heads. and hol ing jaws in unison, substantially as set forth.

33. A mechanism for forming loops on sections of coiled springs, comprising a feedingchute, a longitudinally reciprocating carrier,=an anvil disposed to the rear of said carrier and provided with lateral abutment lugs, a pair of positioning means adapted to impart partial rotations to the sections of.

feeding chute, a longitudinally reciprocatin carrier, an anvil disposed to the rear of ment lugs, a pair of laterally dispose'dpositiomng means adapted for operative engagement with ends of the sections of springs op: erated on to impart partial rotation thereto,-

a pair of loop-forming beam arranged above said anvil and disposed one in advance'of hold jaws associated with said anvil, and loo er means: for operating the earner,

1n unison, substantially as set forth.

35. A mechanism "for forming'loops on sections of coiled springs, comprising a tea ing chute, a longitudinally reciprocating carrier, a spring finger and a stop finger asso ciatcd with said chute in spaced relation and moving with said carrier, an disposed to the rear of said carrier and provided with lateral abutment lugs, a pail-of positioning means adapted to impart partial rotations to the sections of springs op erated on, a pair of loop-forming heads'arra above said anvil and disposed one in 5 advance of the other, a pair'of vertically moving holding jaws associatedwith said anvil, and means for operating thecarrier,

looper heads, positioning means and holding heads in unison, substantially as mttorth.

36. A mechanism for forming loops on sections of coiled springacomprising a feedingchute, a longitudinally reciprocatinig car-' rier, an anvil disposed to the rear c said carrier and provided with lateral aloument jaws in unison, substantially as set P h ds, positioning means and holdingheads attache lugs a pair of loop-forming heads arranged aboiie said anvil and disposed one in advance of the other, a pair of vertically moving holding jaws associated with saidanvil, means for imparting intermittent longitudi-h nal reciprocation to the upper holding jaws, and means for operating the carrier, looper heads and holding jaws in unison, substantially asset forth.

37. A mechanism ing chute, a longitudinally reciprocating carrier, a spring fin er and a stop finger assoa for forming loops on. sections of coiled springs, comprising a feedciated with said 0 ute'in spaced relation and 7 moving with said carrier, an anvil disposed to the rear of said carrier and provided with lateral abutment lugs, a pair of loop-forming heads arranged above said anvil and disposed one in advance of the other, a pair jaws associated of vertically moving hold with said anvil, means fo lmparting mtermittent longitudinal reciprocation to the upper holding jaws, and means for operat-.

tilling the carrier, looper heads and holding V jaws in unison, substantially as set forth. 7

38. A mechanism for forming loops on sections of coiled springs, comprising a teedchute, a lon' 'tudinally reciprocatingcan V rier,'an 'sposed to the rear ofsaid carrier and provided with lateral-abutment lugs, a pair of positioning means adapted to f impart partial rotation to the sections "of springs operatedon a pair or loop-forming heads arranged abdve said anvil and disposed one in advance of the-other, a pair of ice vertically moving holding jaws associated.

with-said anvil, means for imparting'intermittent longitudinal. reciprocation to. the

ripper holdingjaws, and meansfor operate.

mg the carrier, looper heads, positioning means and holding jaws in unison, substantially as set forth.

39. A mechanism for forming loops on sections of coiled springs comprising a teedingchute, a longitudinlally reciprowtmg cariienan anvil disposed tothe rear of said carrier and provided with lateral abut v ment lugs, a pair of laterally disposed positioning means adapted for operative en gagement with ends of the sections of springs operated on to impart partial rotations thereto,.a pair of loop-forming heads ar ranged above said anvil and disposed one in j advance of the other, a pair of vertically moving holding jaws. assdciatedwith said anvil, means for intermittent 1on gitudinal reciprocation to the upper holding jaws, and means for operating the carrier, looperheads,- positioning means and hold ing jaws in unison, substantially as set forth. "do. A mech a for forming loops on sections of coiled springs, comprising a iceding chute, a longitudinally reciprocating carrier, a spring or and a stop finger associated withsaid c ute in spaced relationand moving with said carrier, an anvil disposed to the rear of said carrier and provided with lateral abutment lugs, a pair of positioning means adapted to impart partial rotations 5 to the sections of springs operated on, a pair of loop-forming heads arranged above said anvil and disposed one in advance of the other, a pair of vertically moving holding jaws associated with said anvil, means for imparting intermittent longitudinal reciprocation to the upper holding jaws, and means I

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