US1111987A - Crochet-machine take-up. - Google Patents

Description

S. W. AVIS.

CROCHET MACHINE TAKE-UP.

APPLICATION FILED NOV.15, 1913.

1,1 1 1,987, I Patented Sept. 29,1914.

WITNESSES- HIS ATTDRNEYS 114/ HUN/H, HEM/rs r0 P/mm IJTHO WASH/NCION. D Cv UNITED STATES PATENT OFFICE.

SAMUEL WALTER AVIS, 0F HARTFORD, CONNECTICUT, ASSIGNOR TO THE MERROW Specification of Letters Patent.

CONNECTICUT, A CORPORATION OF CON- CROCHET-MACHINE TAKE-UP.

Patented Sept. 29, 1914.

Application-filed. November 15, 1913. Serial No. 801,200.

To all whom it may concern:

Be it known that I, SAMUEL VVsL'rnn Avis, a citizen of the United States, residing at Hartford, in the county of Hartford, State of Connecticut, have inventedcerta-in new and useful Improvements in Crochet- Machine Take-Ups; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the figures and letters of reference thereon.

My invention relates to improvements in crochet or overseaming sewing machines and.

particularly to that class of machine employing a thread carrying implementfor passing a thread through the fabric near its edge, and a cooperating looping implement for drawing thread from the thread carrying implement, above and below the fabric, to the edge of the fabric wherethe said thread is interlooped.

The general object of the invention is to provide a take up for pulling 0E and controlling the main thread of crochet machines, or that thread which is passed through the fabric, whereby strains to which the crochet hook and the stitch forming mechanism generally have been subjected are relieved, whereby the thread loops are relaxed as they pass over the hook latch and thus the cutting of the loops is prevented and the excessive wear on the hook latch is diminished, and whereby the forma tion of the stitch and the manner in which the same is laid is better controlled.

With these and other objects in view, my invention consists in certain new and useful combinations of elements and in the details of construction as hereinafter more fully set forth.

In the drawings: Figure 1 is a front elevation of a crochet machine embodying my invention, the frame cap of which has been removed and a portion of the machine broken away to more clearly disclose the stitch forming mechanism and the stitch being formed. Fig. 3 is an end elevation of the same machine, looking from the left of Fig. 1, the moving parts, however, being in another position. Figs. 2 and are diagrams showing the operation of the take up mechanism.

Like characters of reference throughout the drawings indicate the same parts.

18,1888 to Joseph M, Merrow; 113,761, is-

sued October 29, 1889 to Joseph M. Merrow; and 141,315 issued November 25, 1890, to Joseph M. Merrow; which machines produce a finish or edge of the same general character as is disclosed in United States Patent No. 113,531 issued October 22, 1889 to Joseph' M. Merrow. 1

The embodimentof my invention shown in the drawings isa formparticul rly suited to the usual Merrow blanket he'mming machine and this form is adapted to be used either as an attachment to machines already on the market or to be builtinto new machines.

Referring to the drawings: the numerall indicates the eye pointed needle, 2 the needle bar, 3 the needle bar clamp which is pivotally connected by the screw stud 1 to the link 5 which in turn is pivotally connected by the screw stud 6 to the needle bar lever 7 which is fulcrumed onthe stud 7 a and which is connected throughthe ball joint 7 b to the pitman 8 which embraces the ball eccentric 9 which is secured to the hand wheel 10, or in any way is held in fixed relation with the shaft 11 on which the hand wheel is mounted, whereby the needle is reciprocated.

On the shaft 11, is mounted the cylindrical cam 12 which is provided with a gear 12 which meshes with a gear 13 on the cylindrical cam 13 which, is mounted on the shaft or arbor 13. The grooves 12 and 13 are engaged by the arms 1 1 and 11 ofthe hook carrier 14 which is pivotally mounted on the carrier block or guide 15 which is constrained vertically by the stationary gib 16 and the adjustable gib 16 between which the guide reciprocates horizontally in a plane parallel to the axes of the cams. The adjustment of the ib 16 is efiected by means of the wedge 17 and the inclined face 18 of the frame cap 18. The elements 16, 16, 17 and 18 areindicated in Fig. 1 by the dot and dash lines. The hook carrier 14 is further constrained by the angular guide 19 I Whichis adj ustably s'ecured tothe frame by the screw 19. Through this mechanism,

ing finger with the needle in the formation of a stitch.

The numeral 30 denotes the feed dog which is secured by the screw 30 to the bar 31 of the feed dog carrier 31 which-is slidingly and pivotally supported at its rear end by the screw stud 32. The'rising and falling movements of the feed are imparted by the eccentric 33 and the feeding or fore and aft 'movements, by the eccentric 34, which is secured to the shaft '11 by the screw 34*, and the spring 35.

The 'numeral' eO indicates the work plate, 41 the needle plate, 42 the chaining finger, 43 thepresser footwhich is secured by the screw 43 to the bar 48 The spring43 applies the pressure to the presser foot throughthe lifter 43 which is seeured'to the bar 43 bythe screw 43 The numeral 44c denotes the fabric having the hemmed portion 4A, 45 the needle guard, 46 the machine frame, which has an overhanging arm 46 on the end of which'is the frame head 46? provided with thebossestfi and 46; the numeral 47 indicates the tension and the numeral 48 the hemmer. The machine thus far described is an example of an ordinary Merrow blanket hemming crochet machine. In the operation ofthis machine, assumingthe needle to have penetrated the fabric and carried the thread with it, and assum ing the hook to have advanced under the chaining finger to a point beyond the needle; the hook withdrawing from this position (moving to'the right as viewed in Fig. 1), grasps the thread from the needle, as the latter is ascending, in the region of the slabbed portion 1 (see Fig. 3), and pulls the thread out to the edge of the chaining finger and fabric. The hook then passes up around the edge of the chaining finger and fabric thus forming a loop from beneath the fabric .which loop is wrapped around the two edges and the under side of the chaining finger. lVhen the hook has risen sufficiently to clear the fabric it advances over the fabric until its throat 20 has passed beyond the needle thread. This causes the under loop, just formed, to slip back over the latch 20 on to the hook shank. The hook then withdraws from this position over the fabric and from the lower loop around its shank, grasps the needle thread from the descending needle while withdrawing, which thread it pulls to the edge of the fabric and chaining finger and through the previous or lower loop, which loop closed the latch as it was shed, and, dropping down sufficiently to clear the under side of the chaining finger, the hook advances toward the needle under the chaining finger until the hooks throat has passed beyond the needle. This causes the upper loop, just formed, to slip back over the latch on to the shankof the hook. The hook again withdraws, grasps the thread from the needle as the latter is ascending, and pulls the thread to the edge of the chaining finger and fabric, and through the previous or upper loop, which loop closed the latch as it was shed. The hook then, rising suiliciently to clear the chainingfinger and the upper side of the fabric, advances over the fabric as before, thus completing a stitch formed from a single thread with two loops at the edge of the fabric while the thread passes through the fabric but once, as is shown in United States Patent No. 413,581 hereinabove referred to.

The feed in these machines occurs each time the needle emerges from the fabric. Inasmuch as two loops are formed, in the above described machine, for each complete operation of the needle it has been found to be desirable to provide the machine with a take up and pull off, operating for each loop or twice for each complete set of stitches, whereby the pulling off and control of the thread may be effected as required.

By the use of my invention, the stitch forming implements are relieved of much of the pull off or take up strains, the stitch loops are controlled and their passageover and back of the hook latch is facilitated, and the point at which the interlooping occurs along the edge of the fabric may be better regulated.

Referring more particularly to the embodiment of my invention illustrated and shown applied in the drawings: the numeral 50 indicates the take up frame which is provided with the webs 50 and 50" and the ears 50 and 50 which are counterbored at 50 and 5O to a depth required to bring the frame 50 in central alinement with the path of reciprocation of the eye (30 which eye will be further described. The frame 50 is secured to the machine by the shouldered tension stud 51 and the headed stud 52 which hold the counterbored faces 50 and 50 to the inner faces of the bosses 16 and 16 respectively, the shanks 51 and 52 of the studs 51 and 52 are securely held in the bosses 46 and 46 respectively by the screw 53 and the screw stud 54 which latter also acts as a thread guide.

The stationary adjustable thread eyes or eye pieces 55 and 56 are secured by the screws 57 and 58 (which are threaded into suitable holes 50 in the frame 50), to the faces 50 and 50 of the frame 50. The webs 5O and 50 effectively prevent the eye pieces 55 and 56 from turning on the screws 57 and 58 and the adjustment of the eye pieces 55 no" and on and 56 is provided by the slots 55 and 56, through which the screws pass, and the three holes into any of which the screws may be placed. When stillfurther adjustmentis desired, the eyepieces and 56' may be reversed, that is, the eye 55 formstance, may be turned with the portion through which the eye 55* passes, up and its screw passed through the slot 55 from its other side, thus securing the face of the eye that is now shown outside, to the face 50' of the frame 50; by thus reversing the eyes and by the use of the holes 50 which maybe more numerous if desired, the range of adjustment of either eye may consist of the entire distance between the bosses 46 and 16 The reciprocating thread eye 60 is mounted on the screw stud 4 by a shank which fits into a bore in the stud 4c and which shank is secured to the stud by the screw 61 in the same manner as is set forth in an application of Joseph M. Mei-row, filed 'in the United Estates Patent Office January 9,1913, and bearing Serial No. 74:1,060. i

In the operation of my invention when applied to a machine as shown: when the needle descends and, passes through the fabric, it carries with it a loop of thread and, just before the end of the stroke, the eye (50 passing between the eyes 55, and 56 pulls off a slight amount of thread as shown in 4. As the needle ascends, the hook pulls the thread passed through the fabric by the needle, out to the edge into a loop, in the meantime, the eye 60, ascending with the needle, prepares to relax or pay off the thread that it has pulled off which relaxing it does as it passes through the position shown in Fig. 1, at which time the hook has about finished pulling out the lower loop and thus the thread that the eye (50 pays off serves to slacken the loop just formed, so 1 'hat the hook may readily pass its latch and sham; through the said loop. on its way over t is fabric.

is the needle continues its ascent from the position shown inthe Fig. 1, the eye (30 passing upward through between the eyes pulls off a comparatively large amount of thread as'shown in Fig. 2, since the needle onits ascending stroke pulls off little or no thread and the eye 60 must therefore pull off all the threadneeded both for forming the stitch and for easing 0d the stitc i. This pull off action of the eye 60 also takes up the slack in the thread sys-' tem and sets the last formed stitch. When the needle descends from the positlon shown in 9, the eye 60 as it approaches the position shown in the Fig. 1 pays off thread to the hook as the said hook forms the upper loop, drawing the same through the lower loop which it is shedding, and, when the implements have assumed the positions shown in Fig. 1, the hook has ceased to draw thread and is beginning to advance under the chaining finger thus passing its latch through the loop just drawn, which the paying off action of the eye 60 has caused to be left slack around the hook shank to facilitate the passage of the latter therethrough. The needle on continuing its descent through the fabric passes a loop of thread through the fabric as before, and the eye 60, continuing its descent and passing between the eyes 55 and 56 as before, sets the stitch just formed and pulls off a slight amount of thread as and forthe purposes aboveexplained. i

The adjustment in which this device is shown and in which adjustmentthe operation of thesaid device has been explained,

is an adjustment in which the enchaining of the loops is supposed to be laid along the center of the edge of the fabric and has merely been selected as typical case. This take up and the adjustments thereof hereinabove described, have been found to be desirable for obtaining improved results on fabrics of various thickness and on finishes of different widths.

Having thus described my invention, what I claim and desire to secure by Letters Patent of the United States is: j

1. In a machine of the class described, a take up consisting in the combination of a take up frame, means including a pair of ears on the said frame for securing the same to the machine, and a pair of eye pieces mounted on the take up frame, the said eye pieces being each provided with a laterally chine, a take up consisting in the combina- 131011 013 a take up frame secured to the machine by means including a pair of laterally extending ears, a pair of eyepieces mounted on the said frame and disposed one on either side of the path of a cooperating reciprocating thread eye member, whereby the thread is pulled off and taken up twice during the formation of each double loop crochet stitch.

3. In combination in a double loop stitch crochet machine a take up comprising a frame provided with a pair of longitudinally extending webs disposed one on either side of the said frame, means for securing the frame to the machine, a pair of eye pieces adjustable in the direction of the length of the said webs, each of the said eye pieces having a portion for engaging one of thesaid webs, means for adjustably securing the eye pieces to the frame and,a reciprocating thread eye member cooperating with the eye pieces whereby the thread j is pulled off and takenuptwice during theformation of a double loop crochet stitch.

' i. Incombination in a crochet machine including a stitch forming mechanism and a reciprocating threadieye ,member actuated thereby, a take up comprising a take up frame having a spair of oppositely disposed justable in the direction of the length of the frame webs, each of the said eye pieces having a portion forengaging one of the said webs, means for adjustably securing the eye pieces to the frame and in contact with the webs thereof, whereby the eye pieces may cooperate with thezreciprocating thread eye member to 'efiect the pulling off .and taking up of'the thread.

5. .In a machine'of the class described, a take up consisting ,inthe combination of a take up frame, a web projecting from each of the two sides thereof, a plurality of screw holes arranged in theframe with their axes in-a plane parallel to the plane of the webs, means for securing the frame to the -machine, apair of adjustable eye pieces each having a-screw slot for registering with, the screw holes in the frame and, a surface, parallel with, the side ofthe slot adjacent thereto, for. engaging one .of theframe webs, and a reciprocating thread engaging implement cooperating with the eyepieces to pull off, take up 'and control the thread.

6.:In combination in a crochet machine includinga stitch Lforming mechanism and a reciprocating thread eye member actuated thereby, a take up comprising a take up frame secured to the machine in the direction of the'path of the reciprocating thread eye member, ,apair oflreversible eye pieces adjustable longitudinally with relation to the frame andthe path of the reciprocating eyemember, the saideye pieces having eye portions projecting therefrom toward the plane generated by the axis of the eye of the reciprocating eyemember, and means for adjustably securing the eye pieces to the vframe; whereby the eye pieces may cooperate with the reciprocating thread eye memberto eifect the pulling off, taking up and control of the thread.

7. In combination in a crochet machine including a stitch forming mechanism and a reciprocating thread eye member actuated thereby, a take up comprising a take up frame, means for securing the frame to the machine, a pair of reversible stationary thread eye pieces cooperating with the reciprocating thread eye member and adjust able in a line parallel to the path of the said reciprocating eye member, each eye piece being provided with a slotted portion and clamping means whereby the said eye piece is secured to the frame, and means for guiding and constraining the eye pieces.

8. In combination in a crochet machine, a take up including a take up frame, means, including a plain headed stud and a shouldered and shanked tension stud, whereby the said frame is secured to the machine; a pair of eye pieces, adjustably secured one to each side of the frame, and a reciprocating thread eye member cooperating with the eye pieces and operating in a path therebetween, whereby the thread is pulled off taken up and controlled during the formation of a stitch.

9. As an attachment to a crochet machine, a take up comprising the frame having the webs 50 and 50 the holes 50 the ears 50 and 50, and the studs 51 and 52 for securing the said frame to the machine; in combination with the eye pieces 55 and 56, each having an eye portion, a slot and a web engaging portion, and an eye member 60, provided with suitable means for securing the same to a moving member of the machine and, cooperating with the eyes 55 and 56"; substantially as shown and described.

SAMUEL VVALIER AVIS.

I Vitnesses GEORGE ALLEN PAGE, GLADYs HELENA WHITE.

Copies ofrthis'patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.

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