US1058892A - Crank hemstitch-embroidering machine. - Google Patents

Description

1). NOBLE. v

GRANKHE MSTITGH EMBROIDEBING MACHINE.

APPLIOATION FILED NOV 27,1909. I

Patented Apr.'15, 1913.v

ATTORNEY D. NOBLE. v CRANK HEMSTITGH BMBROIDERING MACHINE.

APPLICATION IILEDNOV. 27, 1909,

Patented Apr. 15,1913.

4.8HEET8-SHEET 3.

w/mssm ATTORNEY D. NOBLE. CRANK HEMSTITCH EMBROIDERING MACHINE. APPLIOATION IILED NOV. 27, 1909.

4 SHEETS-SHEET 4.

1,058,892. I Patented Apr. 15,1913.

veniently manipulated.

UNITED sTAr s PATENT oEEIoE.

DONALD NOBLE, or BRIDGEPQET,CO NECTICUT; AssreNon '10 TI-IE SINGER MANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY. l

I CRANK HEMSTITCI-I-EMBROIDERING MACHINE.

Specification of Letters Patent. I Patnted Apr.-15, 1913- Application fiieddNovember 27, 1909. 'sria uo. 530,141.

. and State of Connecticut, have invented certain new and useful Improvements in Crank Hemstitch-Embroidering Machines, of which the following 1s a specification, referencebeing .had therein to the accompany-' ing drawings.-

T h1s invention relates to improvements 1n what are commerclally termed crank hemstitch embroidering machines, wherein the material is fed indifferent directions by means of feeding mechanism operatively connected with a manually controlled crank which is mounted so that it maybe con- In the operation of machines of the character herein referred to, it is desirable when directing a seam'at ,an angle to the one pro-' viously formedto suspend the forward feed of the material while manually ZIClJUSiZIIIg said material to its position for; the commencement of the newly directed seam and if, as is herein pointed out, the mach ne is brought to rest between the successivehemstitch figures, stitches will be placed in a circular form betweenthe last feed movement of the finished seam andthe first feed movement of the seam next tobe made.

'The invention is herein shown and described in connection with so much of a crank hemstitch embroidering machine as is deemed necessary for an understanding of its practical application.

F or details inconstruction of the variety of machine shown in connection with the present invention see U. S. Patent No.

1,033,055, dated July 16, 1912, to D. Noble.

Referring to the accompanying drawings, in the several figures of which like parts are similarly designated, Figure 1 is a view in front side elevation of the improved mechanism, together with so much of the embroidering machine as is deemed essential for an understanding of the invention, certain of the elements being shown in section and others in full lies for convenience of reference. Fig. 2 is a .rear side elevation of Fig. 1, except that a portion of thestopmotion mechanism has been removed to better illustrate the operative relationship of the latter and the means for suspending-the forward feed of the material between the successive hemstitc'h figures. enlarged view of the stop-motion plunger and the connections for connecting itwith Fig. 3 is an its operating cam. Fig. 4 is a detail perspective 'view, partially in section, of the feed lever and parts carried thereby. Figs. 5 and 6 are views of the front and rear faces, respectively, of the feed cam, the latter figure including the gear for connecting said cam with .the crank or main shaft of the embroidering machine. Fig. 7 is a rear side face'view of the cam provided with the cam section for controlling the movements of the stop motion plunger, said cam being mounted at the rear of and upon the same shaft. as the feed cam. I

1 is the bed plate 'of the sewing machine,-

Q'the overhanging arm, 3 the arm standard,

4 the hand crank for controlling the direction of the feedof the material, and 5 the commonly employed rotating cylinder providcd with the vertically movable feed ring 6.which, at predetermined intervals, acts upon the beveled portion 7 of the rock lever 8 to advance the material in agiven line of feed, as in the device of the previously re ferred to'application. i 9 represents the feed cam which isprovided with the camgroove 10 having the cam section 11, said cam being secured upon the rotary shaft 12 which, in turn, is mounted in suitable bearings formed in the -o\"erhanging arm and operatively connected with tlie-a ctuating mechanism of thesewing machine to make one rotation-to every three rotations of the main or crank shaft 13, as

is necessary in forming the hemstitch figure.

11 is ashaft mounted to rock in suitable bearings formed in the overhanging arm, and upon the forward end of said'shaft is mounted the feed cam lever 15 constructed with .1 boss 16 in which is loosely mounted a .roller' stud 17 provided at its inner end as topermit the pinch screw 21 to tighten it,

upon the shaft '14 when adjusted to secure the lever 20. The outer end of the lever 20 carries a roller stud 24 upon which is mount .figure, the cam disk 27 ed a roller 25 (shown in dotted lines only) which enters a grooveQti formed in the feed ring 6, thus causing said ring to act upon the lever 8 whenever the roller 18 is acted upon by the cam section 11 of the cam groove 10.

The stop-motion mechanism herein eurployed is of ordinary construction, comprising the means shown and described in the previously referred to pending application; and is substantially the same as the stop mechanism represented by United States patent to D. Noble No. 650,853, dated August 28, 1900, accordingly, only such reference will be made thereto as is deemed necessary to show its control of the means for suspending the'action of the machine between the successive hemstitch figures. The shaft 12 carries at its rear end a cam disk 27 and is operatively connected, through the gear 28 carried by the cam t) meshing with the gear 29, with the crank shaft 1 said gears being of the ratio of three to one and thus transmitting one rotation to the cams 9 and- 27 to three rotations of said crank shaft; i

To prevent the operator from arresting the action of the stitchforniing mechanism except at the completion of the hemstitch is provided with a cam portion 30 which coacts with a roller '31 mounted upon the free end of a connection 32 which is pivoted to oscillate on the screw 33, the opposite end of said conned.

tion being ointed to an L-shaped lever 34 pivoted at 375 to a bracket 36 which, in turn, is-secured by screws 37, 37 to the arm standard.

The L-shaped lever 34 is pivoted to a plunger 38 which is mounted in a suitable bearing formed in the arm standard, the free end of said plunger normally extending out slightly beyond said standard.

39 is a spring, one end of which is attached to the overhanging arm, the opposite end being secured to the connection 32, thus holding the free end of the plunger 38 in its outward position except when the roller 31 is acted upon by the cam portion 30, at which time the free end of said-plunger drawn within its bearing.

40 represents the hand or band wheel which .is loosely mounted upon the crank shaft 13, 41 the brake disk suitably secured to said shaft, and 42 and 43 the commonly employed coacting toothed disks for releasing the band wheel from driving relationship with the shaft 13 whenever it is desired to arrest the action of the machine. The disk 43 is provided with an arm it which is pivotally connected with a brake lever 4K5. The lever 45 carries at its lower end a follower 46 which tracks in a groove 4:7 formed in the shipper lever 48 pivoted by screw a stop lever 56 which. in connection with.

the plunger 38, arts to prevent the stopmotion mechanism fr m arresting t'hcaction of the machine except at the completioi'i o a hemstitch figure, as will later be explained.

57 is a spring secured at one end to the arm standard. its opposite end being attachcd to the lever 48, saidspring, through the connections previously pointed out, acting to hold the brake shoe 50 in contact with the cam portion 57 formed on the periphery of the brake disk 4-1; Such adjustment of the parts -il-S and 50 causes the follower 4G to be positioned in the lower end of the slot 417 and the free end of the lever 48 in opposition to the spring 57,

which positions the follower 46 in the upper end of the slot t7, the brake shoe 50 out of engagement with the brake disk 4-1, the lever 50 with its free end below the plunger 33 and the well understood driving elements into operative relationship for effecting transmission of power from the belt. driven pulley to the crank or main shaft 13. When itis desired to reverse the action of the stopmotion mechanism to stop the machine, the operator permits the spring 57 to control the rocking movements of the lever 4-8 which causes the latter to position the end of the lever 7) in contact with the plunger 38, where it is held until the connection 32, through the action of the cam portion 30.

withdraws said plunger and permits said spring. through the lever 48, to adjust the driving elements out of driving relationship with said belt pulley, and the brake shoe 50 in contact with the cam portion 57.

Having referred to so much of the common mechanism as is deemed important, the improved means for automatically arresting the action of the feeding mechanism between the successive hems t-itch figures will now be described.

In the present development of the invention; the arm plate 58 is provided with the,

tubular bearing 59 into which is mounted a rock shaft 60. provided at its opposite ends with complementalcrank arms 61 and 62,-

rock. shaft- 65 which is mounted in a tubular bearing formed in the bracket 66 secured byv screws 67, 67 to the covdrplate68. The'rock shaft 65 is provided at its outer end with. a forked lever 69 which, at times, act's upon the head 70 of the plunger 17 to withdraw" the roller 18 from the cam groove 10 formed inthe'cam 9, in opposition to the spring 19.

In a suitable bearing formed in the-forward end of the lever 48, andat one side of theslot 47, issecured, by a nut 71', an os-. c1llating-bracket72 into which is threadeda tubular bushing 73.

The bushing 73, which-is held in the desired'adjustment' by .a nut 7t, acts to'guide the lower end of a conne'ction 75 depending from the crank arm 62 and, at--. times, moves said connection in the direction of'its length by contacting with its enlarged portion 76.

\Y-lien in theoperation of the machine the stitching of-the, sea na-has been completed,

-- and his desired'tojdirect the feed of the material at anfanglej'to such seam, the manual, control of power transmission 1s. discon- .tinued and the spring 57 permitted to move the lever 48'so as to position the free end of the stop lever 56 in contact with the plungen 38, in which adjustment the parts remainuntil released by the withdrawal of said plunger, such adjustment of the plunger takingplace when the cam portion 57' occupies a position. substantially --opposite ,to' that shown in Fig. 1, the brake disk continuing its. rotation until the said cam' por-' 'tion coacts with the brake shoe 50 to arrest the action of the machine.

Immediately upon the withdrawal of the' plunger 38, and before the machine has been brought to rest, the movementof, the lever 48, through "the connections previously pointed out, causes the forked lever 69 ,to

with-the cam groove 10. Such disengagement of the cam roller from the cam groove occurs at substantially the time when said roller is about to enter the cam section 11, so

- that during the continued rotation' ofthe cam portion 57 from the position which it occupies-when the plunger 38 is withdrawn, to its position in contact with the brake shoe 50, the cam disk 9 is advanced by the momentum of the machine sufiiciently'to hung the roller 18 in alinement with the surface 7 7 forming the outer guide wall of the cam section 11, and as the stop-motion mechanism is again manually manipulated to start the rnachine, the forked lever 69 ls'caused-to release its controlof the plunger 17, thus permitting the roller 18 t-o ride the surface 7 7 until it is again positionedby the spring 19 in the cam groove 10.

, From the foregoing it will be understood that when the action of the stitch forming and cloth-feeding mechanism is interrupted by thejaction ,of the stop-'motion mechanism, the roller 18 'isplac ed out of engagementwith the cam section 11, of the cam groove 10 and retained in such-position until after said cam section has-'passed'beyond the field of engagement with said roller, so that when the machine is again started, .the formation of a hemstitch figureis repeated without bringing the feeding mechanism into action, and. the manual turning of the material at such time causes the stitches first formed afterstarting the machine to beplaced about a given Such manipulation of the stop-motion mechanism to arrest the action 80, gear 81, hand crank shaft 82 and bracket as such elements are important only in COD."-

nection with illustrating suihcient of the mechanism of a crankhemstitch embroidering machine to demonstrate the application of the invention. a

Claims:

- 1. In a crank-hemstitch embroidering machine' including a stop mechanism for arresting the action of said machine, a stitch-forming mechanism, a cloth-feeding mechanism including a cam-follower and connections between. the latter and said stop mechanism for render-in and allow said stitch-forming mechanism to be operated; until arrested by said stop mechanism. 2. In a crank-hemstitch embroidering machine including a stop mechanism for arresting the action of said machine, a stitchform-ing mechanism and a cloth feeding mechanism, the latter comprising a feedcam, a cam-follower and feed connections for transmitting feediinovements to the fabric being acted on, and connections between said stop mechanism a 'id said cam-follower for discontinuing the ffective action of said feed-cam and allow said stitch-forming mechanism to be oper ted until arrested by said stop mechanism.

nisni, and conne tionsbetween'the latter and,

machine/includin a crank-shaft, to move said-,el'ement-out 0 contact with its coactmg )rr6mber to discontinue the feeding operation said cam-follower ineffective of themachine can be repeated any desired 4' 83 have not been specifically defined herein,

an elementpf the feeding mechanism of said and allow thestitcli-torming mechanism to be operated independently of the feed until said stop mechanism finally arrests theactionjof said machine.

forming mechanism to be operated until arQ rested by'said stop mechanism.

5. In a craiikhemst-itch embroidering niacliine including a stop mechanism for arresting the action of said machine, a manually operated deviceto control said stop mechanism, and connections between the latter and an element of the feeding mechanism of said machine, including an oscillating member carried by said stop mechanism and a rockshaft mounted upon. a stationary part of said'inachine, to move said element out of contact with its coacting member to discontinue the feeding operation and allow the stitch-forming mechanism to. be operated independently of the feed until said'stop mechanism finally arrests the action of said machine,

(3. In a crank hemstitch embroidering thacliine, including a stop mechanism for arresting the action of said machine, a manually operated device to control. said stop mechanism, and connections between the latter and a yieldingly mounted element of the feeding mechanism of said machine, including an oscillating member carriedby said' stop mechanism and rock-shafts mounted upon a stationary part of said machine, to move sa d element out of contact with its coacting member to discontinue the feeding operation andv allow the stitclrforming mechanism to be operated indc iendently of the feed until said stop mechanism finally arrests the action of said machine.

'7.- ln an emb'roidering machine, the combination witlia hand-crank feed-directing mechanism, a stop mechanism for arresting the action of the machine, a stitch-forming mechanism, a cloth-feeding mechanism and connections between the latter andsaid stop vmechanism for rendering said feeding mechanism ineffective and permit said stitchforming mechanism to superpose the stitches atthe will of the operator. y

In testimony whereof, .I have signed my name to this specification, in the presence of two subscribing witnesses.

DONALD NOBLE. \Vitnesses:

Annie M. DONUIEE. -WI! r mu A Fnixaeax.

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