US707221A - Machine for bending scythe-snaths. - Google Patents

Description

No. 707,22l. Patented Aug. l9, I902.

a. m. FENN. MACHINE FOR BENDING SGYTHE SNATHS.

(Application filed Mar. 18, 1902.

4 Sheets8heet I.

(No Model.)

. Patented Aug. l9, I902. G. M. FENN.

(Application filed Mar. 18, 1902.)

4 Sheet s--Sheet 2.

MACHINE FUR BENDINGSCYTHE SNATHS.

(No Model.)

a m 4 o o N0. 707,22l. Patented Aug. I9, I902.

G. M. FENN.

MACHINE FOR BENDING SCYTHE SNATHS.

' (Application filed Mar. 18, 1902.) (No Modgl.) Q 4 Sheets-Sheet 3.

llll IIIIII llll llllllllllllllllllllll IlflllllIIIIIIIHI WHHIlllll THE "cams PETERS ca, PHOTO-LIIHQ. msmuuwu, n. c.

' No. 707-,22l. Patented Aug. l9, I902.

, v a. M. FENN.

MACHINE FUR BENDING SCYTHE SNATHSf (Application filed Mar. 18, 1902. I (No Model.) v 4 Sheets-Sheet 4.

UNITED STATE-s PATENT OFFICE.

GEORGE MERRIHUE FENN, OF CHARLOTTE, MICHIGAN.

MACHINE FOR BENDING SCYTHE- SNATHS.

SPECIFICATION forming part of Letters Patent No. 707,221, dated August 1t), 1902.

Application filed March 18, 1902. Seriallilo. 98,852. (No model.)

T0 on whom it may concern:

Be it known that I, GEORGE MERRIHUE FENN, a citizen of the United States, residing at Charlotte, in the county of Eaton and State of Michigan, have invented a new and useful Machine for Bending'Scythe-Snaths, of which the following'is a specification.

This invention relates generally to woodbending apparatus, and particularly to a machine for bending scythe-snaths.

The objects of the invention are, in al eady, simple, practicahand thorougly-feasiblemanner, to prevent stretching of the fibers of the snath-blank on the outside of the bends and to eifect compression of the fibers on the inside thereof, to obviate splintering or breaking of the blank, to effect large saving both in time and labor in the production of the finished product, thereby greatly reducing its cost of manufacture, to effect perfect uniformity of theoutput, and generallyto simplify and improve the existing modes of manufacturin g scythe-Sn aths.

With these and other objects in view, asv

will appear as the nature of the invention is better understood, the same consists,'generally stated, in a machine of the character specified embodying in its construction a stationary head or die, the operative face of which contains all of the horizontal bends of of the said bends, a vertically-recipricatory former, the operative face of which contains all of the vertical bends of the snath, and a removable frame or form, the bottom of which contains all of the vertical bends and the sides all of the horizontalbends of the snath. In conjunction with the parts named there is provided a flexible jacket comprising two members disposed, respectively, in front and in rear of the blank and movable therewith as the horizontal bends are being imparted thereto and operating to prevent splintering or breaking of the blank, in addition to which jacket there is provided positively-operating mechanis m' to exert end pressure on the blank, thereby to prevent tearing or breaking of the fibers on the outside of the bends as the blank is being formed.

The invention consists, further, in the novel manner of timing the operations of the two movable formers, whereby the belly or horizontal bend of the-blank shall-be entirely completed and the blank moved over the form that is to receiveit before the formerthat is to impart the vertical bends shall start to operate. j v

, With these and other objects in view, as will appear as the nature of the invention is better understood, the same consists inthe novel construction and combination of parts of a machine for bending scythe-snaths, as will be hereinafter fully described and claimed.

In the accompanying drawings, forming a part of the specification, and in which like nu morals of reference indicate corresponding parts, there is illustrated one form of embodiment of the invention'capable of carryingjthe same into practical operation, it beingunderstood that the elements thereinexhibited may be'varied or changed as to shape,-prowithout departingt'rom the spirit'thereofl'and i n these drawings- Figure l is a view in perspective of acom= plete machine capable of carrying the-procedure hereinafter'described into effect. Fig. 2 is a view in vertical longitudinal section.

Fig. 3 is a view in plan viewed from the top of the. machine. Fig. l is a View in horizontal section taken through the rear portion of themachine. Fig. 5.is a view in transverse section taken on the line 5 5, Fig. 3, and lookin'gin the direction of the'arrow thereon. Fig. 6 is a perspective detail viewot' the form or frame into which the snath-blank is forced to receive its vertical bends a'nd'in'which'it isheld while being dried. Fig. 7is a'det'ail view in plan of a slightly-modified form of mechanism for imparting end pressure tothe snath-blank. Fig. 8' is a view in transverse section taken on the line 8 8, Fig. 7, and lookingin the direction of the arrowthereon.

portion, and exact. manner of assemblage v bends of the snath. Connecting with the rear portion of the plunger and working in a longitudinal slot therein is one arm 6 of a toggle-lever, fulcrumedat 6 to the plunger, the other arm 7 of the lever being fulcru med at 8 to a fixed part of the frame in rear of the plunger. The upper terminals of the arms (3 and 7 have connected with them, through the medium of a fulcrum-pin 8, one end of a rod or bar 9, the other end of which is connected to a wrist-pin 10, connecting two gearwheels 11, carried by a shaft 12, mounted in suitable bearings in the frame. These gearwheels mesh with two pinions 13, carried by a shaft 14, one end of which bears a gearwheel 15 in mesh with the pinion 16, carried by one end of a shaft 17, the other end of which carries a band-pulley 18, connected by a belt with any suitable source of power. While not herein shown, it being thought unnecessary so to do, it is to be understood that suitable clutch mechanism may be associated with the shaft 17, whereby the pulley may be made fast or loose with relation to the shaft, as may be desired.

It will be seen that upon motion being imparted to the pinion 16 the gear-wheels 11- will be driven, thereby drawing down the arm 9 and moving'the arms 6 and 7 toward a horizontal plane, causing the plunger to move forward, the limit of its forward movement being reached when the arms 6 and 7 shall have assumed a horizontal plane, the plungerin this movement imparting the horizontal or belly bend to the scythe-snath by coaction with a fixed former or head 19, disposed at the rear of the machine and, as before stated, containing all of the horizontal bends of the snath.

In the operation of imparting the horizontal bend to the blank it is essential that the blank be shielded against any tendency to splintering or breaking and at the same time that end pressure be progressively applied to the butt and tap of the blank in order to effect compression thereof, and thereby obviate any tendency of the fibers on the outer side of the bend from being unduly stretched or from breaking. The means foreffecting these results comprise a flexible jacket consisting of two strips or bands of metal 20 and 21. The band 20 is carried by the head 19 and is held associated therewith by providing each of its ends with a rod or bar 22, which pass through abutments 23, disposed near each end of the head, and carry at their extremities adjusting-nuts 24, between which and the outer sides of the abutments are disposed coiled springs 25, by which the tension of the band may be regulated as desired, and to facilitate yielding of the band rollers 26 may be employed near its terminals, as clearly shown in Fig. 4. The band 21 is associated with the terminals 27 and 28 of two levers 29 and 30, pivotally connected with the ends of the head 19 through the medium of bolts 30, one of which is clearly shown in Fig. 9, the

terminals of the heads being slotted at 30 for the reception of the levers. The band 21, which at its terminals is constructed in the same manner as the band 20, carries at that end which projects through the terminal 27 a nut 31, between which and the outer face of the said terminal is interposed a spring 32, while that end that projects through the ter minal 28 has associated with it a slide-bearing 33, bearing at one end against a coiled spring 34, housed in the terminal, which is recessed for this purpose, the other terminal of the spring bearing against the wall of the recess. The outerend of the terminal of the bend 21, which projects through the bearing 33, as clearly shown in Fig. 3, carries an ad justing-nut 35, between which and the said bearing is interposed a coiled spring 36, that operates to keep the band under requisite tension. The provision of the sliding bearing 33 is essential in order that the band may be forced up close against the terminal of the butt, thereby to impart the short horizontal bend thereto, as clearly shown in Fig. 4, it being obvious that without the provision of the bearing 33 this could not be effected in a thoroughly practical manner without danger of kinking or breaking the band. The levers 29 and 30, which in effect constitute toggles, are provided for the purpose of giving progressive end pressure to the blank as the horizontal bends are being imparted thereto, and thus in a positive manner to prevent stretching of the fibers of the wood on the outside of the bends. To impart the necessary outward and inward movements to the said levers in order first to move the terminals 27 and 28 of the levers 29 and 30 into engagement with the ends of the snath-blank, thus to compress the same, and then to move the said terminals laterally for engagement with a fresh blank there is provided for the first movement an adjustable bar 37, carrying at its inner end a head 38, having its outer face concaved, as at 39, to conform to the crest of the belly bend, and thus distribute the strain thereon to reduce danger of marring at that point, the rear portion of the head being curved or rounded and being adapted when the plunger is moved to the limit of its forward movement to rest in a recess formed in the front face of the head. The rod 37 is made adjustable or extensible to enable it to meet the requirements arising in bending snaths wherein the curves of the belly bend will vary, and to effect this the rod is constructed of two sections 41 and 42, and these two sections are superposed and have their opposed faces serrated, as at 43, the member 42 being provided with a slot 44,

through which passes a bolt 45, carried by the member 41, a nut 46 on the bolt serving to hold the two members at the desired adjustmeut.

To adapt the levers 29 and 30 for cooperation with snath-blanks of different lengths and also to effect their proper adjustment with relation tothe oth'erpar'ts of the apparatus, the terminals thereof are adapted for movement to and from the terminals of the blank, andthis is "effected by providing the "terminals of the head, through which the bolts 30 pass, with slots 46, the upper and lower sides of the said head-terminals on each sideof theslots being serrated and engaged by serrated plates 46", through which the bolts 3O pass. It will be seen that by loosening the nuts of the boltsthe terminals L of the levers may beadjusted with relation to the ends of the blank and may be held permanently in such adjustment by clamping the plates 46 in position.

Instead of having :the band'2O associated with the head the same' may be associated with the terminals of the levers 29 and 30,

as shown in Fig. 7, and be made to perform the same functions as when'disposed as shown in Figs. 3 and 4:. I v

The free ends-f the levers 29 and 30 are slotted, as at 4:7, to recieve the upturned end 48 ofa bar 49,-theother end of which projects upward through a recess 50in the: plunger, as clearly shown in Fig. 2, thebar 49beinglongitudinallyadjustablein thesame" manner as and for the same purpose as the rod"37, as clearly shown M51 in Fig. 2. Now as the plunger moves forward. the blank by contact with the band moves the latter against the head-38 and forces the rod-37 outward and the terminals 27 and 28-of the levers 29' and'30 inward, effecting thereby end compression of the snath-blank,-and when the'plunger has reached the limit of its for- I ward movement and has commenced to re- I turn the end 51. of the bar 49 by coaction with'the forward wall-of the slot-50 of the 4 plunger moves the levers 29 and toward the front of the machine,-thereby projecting the terminals 27 and 28 outward. As will be noted byreference to Figs. 2 and 3, the slot is considerably longer than the diameter of the terminal 51 of the bar 49, thereby permitting the immediate return of the jacket to'horizontal position *toreceive the fresh blank. The quick return of the jacket may be etfectedby a spring or counterweight at tached at the point where the levers'29 and 30 connect, which will force the levers inward and-their terminals outward.

The means for imparting the vertical bonds to the snath-blank comprisesa former 52, the under-face of which contains all of thevertical bends of the snath blank. This former is connected in any suitable manner with three rods 53, preferably by means of offsets or projections 54, through which the rods project and are held associated therewith bynuts 55. The lower ends ofthe rod project-through a cross-piece 56 and are held rigidly associated therewithby nuts 57 and 58, hearing, re-

' spectively, against the upper and lowerfaces of the cross-piece.

pieceare provided with guides 59, adapted to. work on tracks .60,carried by the frame of .ger or former 5. plunger starts to'recede'the lever 68 will be The ends of I the crossthe machine, as clearly shown in Fig. 5. As I the bar 64 and the other'end to a link 66, piv{ otally connected to the base of the'machine'. The lower end of the bar65 is providedwith a curved nose 67, designed to be'engaged'by the wrist-pin, thereby straighteningthe'toggle-lever 61, depressing the cross-piece 56, and'through the medium of the rods 53 forcing down the former 52 and imparting the vertical bends to thebla'nk; Asa means for breaking the joints of thetoggle-leve'rs 61 a lever 68 is provided, which is pivotally connected with an upright 69 of the frame and has one end provided 'Wlfill t slot70, inwhich works a pin 71, carried by the toggle-lever 63, the free end of the 1ever68' being disposed in a recess7 19 in the under side of the plun- It will be seen that-as the forced toward the front of themachine, and thereby break the joints of the lever 61. i To cause rapid return of the former 52, thus to give ample time for the operator'to place a fresh snath-blank in thG'lllEtOhillG, springs 72 are provided, which bear upon 'the'base of the apparatus and against the under side of the cross-piece 56. J I

The form 73, into which the bent blankis forced, is of the usual construction and'is adaptedto fit in a recess disposed in front of the head 19, thesaidrecess' being'at its entrance endof sufficient width'to permit ready insertion of the form. The spacethus pro-.

vided for the reception of the form would permit the butt-end of a snath-blank-to drop when first placed between the jacket, the tap end resting upon the table,.a'nd to prevent this the terminal 2801: the lever 29- is pro vided on its inner face with'a projection'75, upon which the butt will rest; but'as soon'as the plunger moves forward to bend the-blank the b'utt will move off fromthis'projecti'on, so that it may subsequently be forced-into the form. I I I I I I -Havin'g thus described'the difierent parts of the apparatus, the manner-in which it op-i crates will now be explained. The parts of the =machine being in the position shown in Fig. 3 and the form in the-position as above I described,a snath-blankis placed betweenthe' jacket members 20 and. 2l, and the former 5 I then moves forwardand presses the -blank againstthe band 20, which latter then engages with the head 38andoperates to cause theterminals 27 and '28 of the-levers 29*and 30, to impart end pressure on the snath-blank, f

all of the vertical bends.

the plunger by coaction with the head 19 imparting all of the horizontal bends to the blank. By the time the levers 6 and 7 of the toggle have assumed an approximately horizontal position all of the horizontal bends will have been imparted to the blank, and before the plunger 5 begins to recede the Wrist pin 12 will engage with the nose 67 of the lever 65, and thereby actuate the toggles 61 to force the former 52 downward, pushing theblank from between the jacket members and into the form 73, imparting to the blank As soon as the former 52 resumes its normal position the form 73 is lifted out of the machine with the bent snath in it, and another form is then sub stituted and the operation continued as before.

It is further to be understood that while this machine is described as adapted for bending scythe-snaths it can be readily adapted for bending any irregular form by providing plungers and heads having their opposed faces of the contour desired, and as this ,will be readily understood detailed illustration thereof is deemed unnecessary.

It will be seen from the foregoing description that the operation of this machine is continuous and very rapid, that the output will be of uniform character, and that all danger of breaking or splintering a blank is positively eliminated.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A machine for bending scythe-snaths, comprisinga flexible jacket for inclosing opposite sides of the blank, means for imparting the horizontal bends to the blank, means for imparting progressive end pressure to the blank while the said bends are being formed, and means for imparting the vertical bends to the blank.

2. A machine for bending scythe-snaths, comprising a flexible jacket for inclosing opposite sides of the blank, means coacting therewith to impart the horizontal bends to the blank, mechanism operated by the said meansfor imparting end pressure to the blank while the said bends are being formed, and means for imparting vertical bends to the blank.

3. In a machine forbendingscythe-snaths, the combination of means for imparting the horizontal bends to the blank, a flexible jacket for inclosing'opposite sides of the blank,

means coacting with the jacket to impart end pressure to the blank, and means for forcing the blank from the jacket and for imparting the vertical bends thereto.

4. In a machine for bending scythe-snaths, the combination of means for imparting the horizontal bends to a snath-blank, an adjustable flexible jacket for inclosing the opposite sides of the blank, mechanism actuated by the said means for imparting progressive end pressure to the blank, and means for forcing the blank from the jacket and for imparting the vertical bends thereto.

5. A machine for bending scythe-snaths, comprising means for imparting the horizontal bends to the snath-blank, a jacket for inclosing the opposite sides of the blank and to be flexed by the said means, and vertically movable means for forcing the blank from the jacket and for imparting the vertical bends thereto.

6. A machine for bending scythe-snaths, comprising an adjustable flexible jacket for inclosing opposite sides of the blank, means coacting with the jacket to impart horizontal bends to the blank, and mechanism operated by the said means for imparting end pressure to the blank while the said bends are being formed.

7. A machine for bending scythe-snaths comprising a flexible jacket for receiving the blank, a plunger for imparting the horizontal bends to the blank, means for imparting progressive end pressure to the blank while the said bends are being formed, and means for imparting the vertical bends tothe blank.

8. A machine for bending scythe-snaths comprising a flexible jacket for receiving a blank, a plunger coacting therewith to impart the horizontal bonds to the blank, meansoperated by the plunger for imparting end pressure to the blank while the said bends are being formed, and means for imparting the vertical bonds to the blank.

9. A machine for bending scythe-snaths comprising a flexible jacket for inclosing opposite sides of the blank, a plunger coacting therewith to impart the horizontal bends to the blank, and means operated by the plunger for imparting end pressure to the blank while the said bends are being formed.

10. In a machine for bending scythe-snaths, the combination of a movable plunger for imparting the horizontal bends to asnath-blank, a flexible jacket to receive the blank, means coacting with the jacket to impart end pressure to the blank, and means for forcing the blank from the jacket and for imparting the vertical bends thereto.

11. Inamachineforbendingscythe-snaths, the combination of a plunger for imparting the horizontal bends to a snath-blank, an adjustable flexible jacket to receive the blank, means actuated by the plunger for imparting progressive end pressure to the blank, and means for forcing the blank from the jacket and for imparting the vertical bends thereto.

12. A machine for bending scythe-snaths comprising a plunger for imparting the horizontal bends to a snath-blank, a jacket to receive the blank and to be flexed by the plunger, and a vertically-movable plunger for forcing the blank from the jacket andfor imparting the vertical bends thereto.

13. Inamachineforbendingscythe-snaths, a plunger for imparting the horizontal bends to a snath-blank, a toggle-lever associated with the plun ger,contin uous1y-opcrati n g d ri vall ofthe vertical bendsand its sides ing mechanism operatively connectedvvith the levena'jacket to receive a snath-blank, a ver- I ticallymovable pl un ger for inipa'rtin g'the vertical-bends to the snathblank, and intermit-v tently-operating mechanism" connecting the latter plungerxvith' the said driving mechanisin 7 v I 14'. In a machine for bending scythe-snaths I a plunger for irn paitingthehorizontal bends to snath blank, continnouslyoperating I mechanism associated therewith for i mpart-' ving reciprocatorymovements thereto,a blanlc,

[receiving jacket'coacting with theplnnger, a

vertically-reci-p'rocatorytpllinger for impart-v 'ing the vertical" bends to the blank; "a i =termittently-operating mechanism connect in'g' the latter p1nngerwith.the'said con tin'n 1 5-. Inamachine a plunger for impartm'githe{horizontal bends to a;snath-'b 1anl2,a jacket to receive thcblank;v

means coact ngwith the jacket-for imparting I lend press-ure'to thehblank,"a former for im-y par e forforcing itfiomthejacketgj mcans disposed". in the'path of traveltof the'ljacket andfac'tu'a' the vertical bends'to the blank and.

atedby the for\vai'd, -movementof the, pl nnge-r to operate the gend-pressure-i tnparting closing opposite I I means coacting with thejacket forimparting endpressureto a contained blank; I scythe-'sna'ths, the combinatlonywith a flexiblejaeket for in i closingopposite sidesof a'snath-bIank and means; and means connecting the"end-pres v snre imparting, means and the plnnger.where-' by upon rearward; movement of the latter to If retu rn the pressure-imparting"means(to its normal position. e 16. Inamachineforbendingscythe-snaths, the combination with-- a ifiexible. j acket for insides of a snat'h-bla'nk', of

l7. In-a machinefor bending having its membersfadjnstable5 'ofadjiistable" I plunger, a flexible 5' 1 cally-movableplunger for mparting the've'm tical bends tothe s'nath-blank and feorforc means coacting with the'jacketfor'impar-ting end pressure to a contained blanks: 18; In a machine'forbending scythe-snaths, the I combination of .a horizontally-movable blank receiving j acketdis-- 1 posed in advance ther eoljmeansactuated-by i'inpartingend pressure to the stationa'ry: I head, a verti the plnnger for contained'blank, a

" ing i t from the jacketgand a: "form disposed embodying in II below the latterjplnn'gertoreceivethefblank 5s as itis forced from the'ija'cke'tq [19. A machine"forbending.."scythesnathsI ts; con'strnotion, astationary v head or die, the operative face of which co n f-horizontal bendsof th'e snathi I I (xi tainsall of the horizontal t 6o.

' erative faceof Winch also; contains all o'f the said bends, a vertically-moiprocatoi y former, theoperativeface ofwhich-conta'ins allof the verticalbends ofthe snath, and a removable frame or form,the bottomof whichcontains all f. h

bonds, of a scythesnath, aniovablc former orflplungei' the opforbendims, scy thesnaths, a

embodyi n initsconstruction a blank-receiving acket, means coacting therewith toimtionary head or operative faceof whichalso contains allof former, the operative face of which 't zontains allot the horizontal bends'ofthe snath.

the snath blank,

mechanism; associated WithsaidQmeans 'for ing in cans,- verticallyreci'pfiocatory' ncans for imparting the verticalfbends tothe blank,- and operating mechanism,

bend -f formingm'eansand a flexible jacketffor press' 1 re applying mechanism; v and a head v, jacketfifl I II v -23.- ;Inamachine for-bendingScytlie-shaths,

-. end-pres'su re-app'lyi'ngrnechanisiinand a head adj'nstably connectedwiththe said mecha'm ismQand disposed within the rangefof flexnre of the'said jacket,

. 24'. ,Ina machine bend-forming I I and a flexible 1 jacket for .inclosing opposite plying mechanis n,v "a head aGJUStabIyBon-I within the range' of flexnre or the said jacketv toclose the'said mechanism on the forwardmovement of the said in ember, anda bar havis'm' and'its other end disposed t vithinthe'slot ofgthe said' mem' pressinre-applying,Inechanism 2 5. yIn a machine for bending ments to engage ted en s of the levers andit's' other'termin'al part. end pressure to 'thesn ath-blank, 'a'sta-f I die, the operative I face of 1 which contains allot thehori'zontal bends of? the'snath, a movable formertor plunger; the n '75 a the said bends, a vertically reciprocatoryimparting reciprocatory movements theretoga blank-receiving jacket coactingwiththebendintermittentlyoperating mechanism connecting the latter meansfvvith the continuously:

sides "of a snatheblank, of lend-pressnre-ap- I -nected with the said mechanism and disposed' and'their rear terminals slottedQI'and a] bar; lhavingonetermina1 disposedwithin the slotdmachine forbending scythe-snaths I all of the vertical bends] ofthe snath, and a v V removable frame or form the bottom of'which :fc'ontains all of. the verticalbends and its sides j-2'l Inamacliine fol-bendingscythesnaths, L means for impartingthehorizontal bends'jt'o' conti'nnouslyL-operating I ,22}; Inamachmefor bendingscythefsnath's,"- I the combination withgmecip rocatory be'llyv i a inclosingoppositesides' of a snath, of e nda connected with thesaidjmechanism and dis-" a v posed withinthe i a ngej OffieXuieoEv'the'said-a the combination with 1'eciproc'atory ,belly bend-forming means andga fiexi'ble jacket'fort 'i'n closing opposite sideso'fa-snathblank,

fotbendingscythe snaths,- .th combination with, a' riecip'rocat'ory bellymember; provided with'a slot,

ingaoneend connected vvi tlirthesaid me'chan;

be'rfand 'operating on the v'backwardmovement thereof toop'en the end- I scythe-snaths, v 7 the combination withjthe belly-hen d-i'orming .1 2 5 ,1neans-, of end press'n're 'ekert'ingmechanism 1 comprising pivoted;leversr 'having their forward terminals-formed to. constitute" abutthe.ends'ofthe sriath-blanks, v

26. In a machine for bending scythe-snaths, the combination of a stationary head and a movable plunger each having its operative face containing all of the horizontal bends of a scythe-snath, of a vertical plunger having its under face containing all of the vertical bends of a snath. 4

27. Inamachinefor bending scythe-snaths, the combination of a stationary die and a horizon tally-reciprocatory plunger, each havingits operative face provided with'all of the horizontal bends of a scythe-snath, of a vertically-reciprocatory plunger having its under face provided with all of the vertical bends of the snath, and a removable form or frame disposed below the latter plunger, the bottom of the form having all of the vertical bends and its sides all of the horizontal bends of a snath.

28. In a machine for bending scythe-snaths, the combination with the belly-bend-forming means, of end-pressnre-exerting mechanism actuated by the said means, and a flexible jacket associated with the said mechanism for inclosing opposite sides of a snath-blank.

29. In a machine for bendingscythe-snaths, the combination with the belly-bend-forming means, of end-pressureexertingmechanism actuated by the said means, and a two-membered flexible blank-receiving jacket associated with the said mechanism, one terminal of one of the members of the jacket having a slide-bearing associated therewith.

30. In a machine for bendingscythe-snaths, bellybend forming means having toggle mechanism associated therewith, verticalbend-forming means having toggle mechanism associated therewith, positively-driven master-wheels operatively connected with the toggle mechanism of the belly-bend-forming means, said wheels being connected by a wrist'pin, a bar having one end connected with the toggle mechanism of the verticalbend-forming means,and its opposite end provided with a nose disposed in the path of movement of the wrist-pin, means for supporting the latter end of the bar in operative position with relation to the wrist-pin, and a lever fulcrumed to the frame of the machine and having one terminal operatively connected with the bar and its other terminal disposed in the path of movement of the bellybend-forming means.

31. In a machine for bending scythe-snaths, belly-bend forming means having toggle mechanism associated therewith, verticalbend-forming means having toggle mechanism associated therewith, positively-driven master-wheels operatively connected with the first-named toggle mechanism,said wheels being connected by a wrist-pin, springs coacting with the second-named toggle mechanism and operating normally to hold the vertical-bend-forming means normally raised, a bar having one end connected with the toggle mechanismrof the vertical-bend-forming means and its opposite end provided with a nose disposed in the path of movement of the wrist-pin, means for supporting the latter end of the bar in operative position with relation to the wrist-pin, and a lever fulcrumed on the frame of the machine and having one terminal operatively connected with the bar and its other terminal disposed in the .path of movement of the belly-bend-forming means.

In testimony that I claim the foregoing as my own Ihave hereto affixed my signature in thepresence of two witnesses.

GEORGE MERRII-IUE FENN.

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