Jan.‘ 14, 1947. 1 c. GOFORTH 2,414,227 SEWING MACHINE Filed June 4, 1942 3 Sheets-Sheet l a‘. F.’ 6' ya rZ-k, INVENTOR. BY Jan. 14, 1947.. 2,414,227 c. F. GOFORTH SEWING- MACHINE Filed June 4, 1942 L.il! 3 Sheets-Sheet 2 I 1 Mum) W“ .mh, aif'é'fforiiy, . BY ' INVENTOR. Jan. 14, 1947. C. F. GOFORTH 2,414,227 SEWING MACHINE Filed June 4, 1942 3 Sheets-Sheet ‘3 , ‘ V Patented Jan. 14, 1947 ‘2,414,227 UNITED STATES PATENT ' OFFICE I 2,414,227 SEWING MACHINE Charles F. Goforth, Wichita, Kans. Application June 4, 1942, Serial No, @5383 1 Claim. (Cl. 112-—l184) 1 2 invention relates to sewing machine con by a suitable belt not shown, moving over the struction, an important object of the invention being to provide a sewing machine including'an oscillating member, GOhStILl?b?d to operate in a pulley 8,mountedthereon.‘ " Another object of the invention is to provide an oscillating thread-engaging member having oppositely disposed thread hoolgs, so arranged that regardless‘ of the direction of ‘the “initial ' ‘ " crank arm l0’ mounted on one end of the ‘power shaft, the crank arm being connected with the linl; Ii’, that in turn connects with the-‘needle bar l0 through the collar l2’ and stub‘ shaft 13'. Qperating adjacent to the needle bar, is the presserefoot bar I2. On the lower end of the movement of the hand wheel of the sewing ma chine by the operator, one of the thread hooks will be in a position to pick up the loop in the bar i2, is mounted the pres‘ser-foot l3 which co operates with the feed mechanism of the ma chine in moving the material being sewed, thread, formed by the needle of the machine in passing through the material being sewed, and carry the loop to a position around the ‘bob-bin thread, in forming a stitch, thereby eliminating improperly formed stitches which usually occur by starting the hand wheel in the wrong direc tion. “ the usual vertically movable needle bar Ill that carries the needle H. ‘The power shaft 1 trans, mits movement to the needle‘bar to, through the horizontal plane and used in lieu of the usual well known loop taker. ‘ In the head 9 'of the sewing machine is located through ‘the machine.' Operating between the arms of the member I4’, is an eccentric 16', that is secured to one end of the power shaft 1, where, by rotary‘ movement of the power shaft 1 is con? verted into‘reciprocatorymovement of the needle ' With the foregoing and other objects in view bar l0 ‘and take-up bar‘516. Secured'on the which Will apnear as the dg$<=¥ipti0¥l proceeds, shaft 1 is a sleeve !4 on one end of whichis mounted a pinion I5, the opposite end of the the invention consists of certain novel details of construction and combinations of parts herein after more fully described ‘and pointed out in the claim, it being understood that changes may be sleeve Hi carrying the disk 34 over which the eccentric I 6, to be hereinafter more fully ‘de scribed, operates. ‘ ‘ ‘ Adjustable bearings H and 18 extend into de made in the construction and arrangement of parts‘ without departing from the spirit of the pressions formed in the hub l9 of the member A 20, so that the member 29 may be‘rotated freely invention as claimed. 30 on the adjustable bearings. A gear indicated Referring to the drawings; Figure 1 is a longitudinal sectional View at 2| is formed at one end of the‘ member 2|] and meshes with the pinion I5, whereby rotary through a sewing machine constructed in ac movement of the power shaft 7 is transmitted cordance with the invention. to the member 28. Formed in the periphery of Figure 2_ is a bottom plan view thereof. Figure 3 is a sectional view taken on line the member 20, is a cam groove 22 into which the pin 23 extends/the pin 23 being carried at 3—3 of Figure 1. Figure 4 is a sectional view taken on line 4-4 the upper end of the pivoted arm 24 which is of Figure 1. supported at a point substantially intermediate its ends, by the mounting 2.5. The lower end‘ of the‘arm 24 extends through an opening in the supporting table 5, and terminates at ‘a point below the table 5 as clearly ‘shown by Figure ‘1 of the drawings. Pivotally connected to the Figure 5 is a bottom plan View of the oscil fitting double hook member Figure 6 is an elevational View of the oscil lating member and bobbin case mounted thereon. ' Figure‘ 7 is a vertical sectional view through the oscillating member and bobbin case. lower end of the arm 24, is a rack bar ‘25 that Figure 8 is‘ a view illustrating the initial posi- ‘ tion of the needle thread loop, with respect to the bobbin thread. ' Figure 9 is ‘an 'elevational view of the machine engages the segmental gear 21. This segmental gear'2l is secured to the tubular bearing mem ber 29 that is secured to the shaft 30, the bear lng member 29 being mounted in bearings seated ence character 5 designates the support or table of the sewing machine, indicated generally by the in the bracket 28. The ‘shaft extends from the center of the oscillating double-pointed 'hook member 3! which operates in‘ a horizontal plane directly under the ‘needle and presser~foot of reference character 6. the machine. head cover plate. Referring to the drawings in detail, the refer- . ‘ The reference character ‘l designates the power shaft of the sewing ‘machine which is operated 55 " “ “ This double-pointed hook member 3! is of a novel construction, and embodies ‘a disk-like 2,414,227 3 4 member formed of suitable sheet metal material, the peripheral edge thereof being turned upward ly and inwardly as clearly shown by Figure 5 One end of the bar 45 is forked at 45.’ and accommodates the pin 46', whereby the bar 45' is permitted to reciprocate under the table 5 of the drawings, providing a ?ange 32. of the machine. This feed bar 45 includes an arm 49 extending A por tion of the ?ange 32 is cut away providing spaced hooks 33 at the ends thereof, the hooks 33 being upwardly towards the presser-foot I3, the ser rated end 55 thereof cooperating with the press disposed in opposite directions with respect to each other, providing thread hooks that are de signed to hook into loops formed in the, thread, er~foot i3 in feeding material through the ma by the needle of the machine, in carrying the chine is in operation and the shaft 43 is rotated backwardly and forwardly substantially a quar chine. Thus it will be seen that when the ma needle thread around the bobbin thread. ter turn in each direction, the feed arm 49 is The ?ange 32 rests in the annular groove 32', operated to feed the material through the ma formed in the periphery of the bobbin case 33' chine. In order that the feed mechanism may supporting the bobbin case on the hook member 3|. A ?ange 34' forms a part of the bobbin case 15 be adjusted, the lever 40' may be operated to move the arm 38' to various positions within the and has a cut-out portion 35’ through which elongated opening of the right-angled end portion the needle of the machine extends in forming the of the arm 38, thereby adjusting the length of stitch. In order that the bobbin case will be throw of the arm 38’ with the result that the held against rotary movement, a pin 35' is pro vided and extends downwardly from the lower 20 sewing machine may be adjusted for making a substantially long stitch as in basting. By mov surface of the table 5, terminating at a point ing lever 40’ to the limit of its upward movement above the hook member 3|. It will of course the feed is reversed, since the movement of the be understood that the double-pointed hooks and arm 38’, shifts the roller to the opposite end of the operation of the same is such that regardless the elongated opening, or to-the position as shown ‘of the direction of oscillation in which the in dotted lines in Fig. 4 of the drawings, with double-pointed hook is started, one of the hooks the result that downward movement of arm ,36 will pick up the thread from the needle and moves the arm 38’ downwardly instead of up form the stitch. ‘ wardly, as would be the case when the roller It might be further stated that the construc 38 is positioned in the opposite end of the elon tion of the cam groove 22, causes a movement ‘of the pivoted arm 24 which in turn operates 30 gated opening. The cover plate for the head of the sewing the rack bar 25 to oscillate the double-pointed machine, is indicated by the reference character 5|, and is formed with a notch 53 at one corner‘ hook member and cause the double-pointed hook member to cease oscillation for a predetermined period, prior to the starting movement of the 35 thereof, through which the top thread or thread from the spool of the machine extends. The member 3| in the reverse direction. Mounted on the power shaft ‘l, to move there— with, is an eccentric, which embodies a disk 34 cover plate 5| also provides a support for the top thread-tensioning device which embodies a spring plate 52 secured to the cover plate 5|, by means and eccentric band 35, the band 35 being secured to the upper end of the arm 35 mounted in one 40 of the set screw 54. Hook 55 forms a part of the thread-tensioning device, under which the thread end of the sewing machine. The arm 36 is passes from the notch, the thread passing up pivotally secured to the link 38, through the pin wardly from the hook 55 and through the eye in 31, the link 38 having an elongated opening, as the arm 55 which extends through an elongated clearly shown by Figure 4. This link 38 is pivot ally mounted on the shaft 39' secured Within 45 opening in the cover plate. This arm 56 is formed with a pivoted end 56’ which is normally ‘the machine housing. held in an extended position by the spring 51’ Mounted within the sewing machine, is an arm 38’ on one end of which the roller- 39 is mounted adjacent to the pivot point between the mounted, the roller moving through the elon gated opening, so that movement of the pivot pivoted end and arm 56. This pivoted end moves downwardly when the thread becomes excep arm 36, results in a relative movement of the tionally taut, thereby preventing breaking of the arm 38'. thread due to lack of resiliency at ‘the point of Thus it will be seen, that due to this construc tion, the position of the roller 39 within the contact between the thread and arm. From the arm 56, the thread passes downwardly to the elongated opening, may be adjusted longitudi needle. nally thereof, to vary the throw of the arm 38’. The adjustment of the arm 33' withrespect to the link 38, is accomplished by the operation of the lever 40', which is extended through an ‘opening in the sewing machine, there being pro vided a link 4|’ connecting the lever 4|!’ with the arm 38’ so that as the lever is swung on its pivot, the roller 39 is moved longitudinally of the link 38. This arm 38' has connection with the arm _ From the foregoing it will be seen that due to the construction of the double-pointed hook 3|, the hook will pick up the needle thread in form ing the stitch, regardless of the direction of os cillation in which the hook is started, thereby insuring against an improperstitch. It will also be seen that by adjusting the lever 40', the length of the stitch may be regulated, to the end that long stitches may be made, as in basting, and by 65 throwing the lever 40' from the top to the bottom 42 that in turn is secured on the shaft 43 mounted under the sewing machine table. This shaft 43 extends throughout the length of the sewing machine, and carries the feed bar operating mechanism 44 at one end thereof. 70 it reverses the feed and vice versa. On forming a stitch, the threaded needle passes downwardly through the material being sewed, Mounted directly under the sewing machine, is and through the cut-out portion in the ?ange of the bobbincase, forming a loop A as shown‘by Fig. 8 of the drawings. The hook at one end of the feed bar 45 that has teeth 46 near the free the cut-away portion of the member 3|, depend end thereof, the teeth being adapted to cooperate with the presser-foot, in feeding material being sewed, under the needle. ‘ ing on the direction of rotation of member 3|, moves into the loop spreading the loop and, car 75 rying the thread at one side 7of the loop over the 5 2,414,227 beveled upper edge of the bobbin case, the thread at the opposite side of the loop passing under the lower edge of the bobbin case, the thread moving through the space K between member 3| and bot tom of the bobbin case, until the loop moves from the position shown at C in Fig. 5 of the drawings, to the position 9, whereupon the tensioning 6 nected with said shaft, underthread mechanism supported by said body portion and including a circular bobbin case having an annular groove formed in the periphery thereof, a disk-like mem ber disposed under the bobbin case, the edge of the disk-like member being turned upwardly and inwardly, providing a ?ange disposed within said means or arm 56, operate-s to draw the thread annular groove and connecting the disk-like taut, causing the thread to slide over the edge member and bobbin case, a portion of the edge of of the bobbin case and loop around the bobbin 10 the disk-like member being cut away providing thread B, forming the stitch. This operation is hooks disposed in opposite directions, at the ends repeated in forming a line of stitching as in of the cut-away portion, means operative by said sewing. shaft for oscillating the disk-like member where What is claimed is: by said hooks are alternately engageable with a In a sewing machine, a body portion, a power 15 needle thread loop delivered below the bobbin shaft within the body portion, a reciprocatory case by said needle in forming a stitch. needle Within the body portion operatively con CHARLES F. GOFORTH.