US1960100A - Art stitcher - Google Patents

Description

May 22, 1934.

F. X. DOUBLER ART STITCHER Filed March 2, 1952' s Sheets-Sheet 1 INVENTOR.

fkmuuw ATTORNEY 5 May 22, 1934- F. x. DQOUBLER ART STITCHER s Sheets-Sheet '2 Filed March 2, 1952 I N VEN TOR.

ATTORNEYS.

v May 22, 1934.

F. x. DO UBLE R ART STITCHER Filed March 2, i952 I WERE 3 SiIeetS -Sheet s "INVENTOR.

v ATTORNEYS Patented May 22, 1934 PATE ART STITCHER Francis X.'Doubler, Cleveland, Ohio Application March 2, 1932, Serial No. 596,345 0 This invention relates to improvements in art 'stitchers.

One of the objects of the inventionis to provide an art stitcher designed to make hooked rugs andsimilar articles, or any article requiring loops or severed loops of any. design or pattern upon a suitable. base such as burlap. The material used for the loops may be rags, yarns, fiosses, strips cut from discarded stockings, etc. :0 Another object is to provide a machine for this purpose with which the loops can be left intact or be clippedatwill.

A further object is to supply an inexpensive machine of simple construction, and one which .15 may be operated even by an-unskilled operator for the production of pleasing designs on suitable textile fabric bases. 7 p l With the foregoing objects outlined and with other objects in view which will appear as the I description proceedsythe invention consists'in the Fig. 3 is an enlargedtop plan view of the central portion of the hood and showing the slot through which the needle, knife and tension members opv erate. e

Fig. 4 is an enlarged sectional view of the main operating parts of the machine, taken on the line 4-4 of Fig. 6. V v

Fig. 5 is a sectional View of the same taken on the .line 55 of Fig. 6.

Fig. 6 is a top plan view of certain of these parts, with some of the other-parts removed. Figs. 7 and 8 are respectively a side elevation and .an end elevation of the tension member of the mechanism.

Fig. 9 isahorizontal sectional viewof the same on theline 99 of'Fig. '7.

Fig. 10 is'a detail view showing the manner in which a cam raises the tension member.

Figs. 11 and 12 are respectively, a side elevation,and end elevation of the knife needle of the 150 apparatus.

needle, taken on the line 20-420 of-Fig. 17.

Fig. 18 is a sectional view of the same-on the line 1818 of Fig. 17.

Fig. 19 is an edge elevation-of. the needle.

Fig. 20 is a horizontal sectional view of-the Fig. 21 is a detail view showing how one-of the cams actuates theknife needle aswell as theknife of that needle.

'Fig. 22 is a sectional view-of a line 2222 of Fig. 21. v 1

Referring to the drawings, it will benoted that the improved art stitcher preferably consists of a small stand 23 supported by legs 24 which also support a shelf 25.

At the top of the stand, there is a casing .2 6'

detail onthe having acover 27 of pyramidal shape, forming a hood which may be adjusted vertically by means of screws 28 for the purpose ofv adjusting the height to which the loops will bezprojectedthrough the sheet29 of burlap or the like, 'whichistautly securedto .a rectangular framel30 thatmay be manipulated by theoperatdr/ As best shown in Fig. 3, the .hood has ;a slot 31 in its top through which the tension member, knife needle andyarn needle operatein forming loops in the sheet 29. r

Any suitable electric motor 32 is arranged inthe casing, and the switch for this motor may be controlled by the foot of the operatorwhilev he is sitting in front of the machine. 7 ,By means of any suitable device, suchas a belt 33, the motor drives a pulley 3 4'which in turn iactuates a worm 35 on as'haftBB-that is mounted in suitable bearings on posts 37, preferablyforming integral parts of a metal base 38 that is secured to the bottom of the casing by any suitable means such'as bolts 39 and strips 40.1

A worm gear 41 is'mounted on a shaft 42 and driven by the worm, and this shaft carries a tension member operating cam 43, .a knife needle operating cam 44, and the main needle operating cam 45. e g

. For lubricating purposes, the base is s'haped'to form oil wells 46 and .47, into which the worm gear and earns 44 and 45 project.

The generaloutline of each of the cams 44 and 45 is shown in .Fig. 21, and it will be'noted that each of these cams has a flange .48 extending throughout half of its circumference and designed to hook into a recess 49 arranged respectivelyin r thelower ends ,of the knife needle 50 and yarn needle 51. I C

Aspart-of the knife needle, thereis a'knife .52 shown in detail in Figs. 14-and 15, tandawm be noted from Fig. 21 that the'cam 44 has fixed thereto an auxiliary cam 53 which; functions to raise the knife 52 in the needle 50 as the cam 53 rotates.

Guide means 54'for guiding the lower ends of the tension member 55 and theneedles 50, 51, is mounted on the base 38 and may be braced by straps 56, as shown in Fig. 5.

From Figs. 4, 17, 18, 19 and 20, it will be noted that the yarn needle 51 is provided with a wedgeshaped head 57 having fixed to its lower end a yoke 58 which is pivotally connected at 59 to the 7 body of the needle. This construction permits the head of the needle to rock.

The needle head has a pointed end 60 to pierce. the fabric 29, and it also has a hole 61 through which the yarn 62 passes. I

From Fig. 4 it will be noted that as the needle 51 descends, the yoke 58 comes in contact with an adjustable screw 63 mounted on the guide 54, and this causes the cap 57 to move in one direc- -'tion on the pivot 59. The cap is moved inthe opposite direction by means of an abutment 64 which is mounted on the reciprocating tension member 55, and can engage the yoke 58.

The tension member 55 has a head 65 designed to engage the yarn and to hold it against the sheet 29 while theneedles are performingsome of their 7 functions.

68 which coacts with an-abutment 69 on the knife to normally press the knife downwardly.

Itwill be noted that the top of the needle 50 is provided with a slot ,70 for the yarn, and that'the cutting edge 71 of the knife can move up into this slotted portion of the needle forrthe purpose of severing the yarn.

I Obviously, if the knife 52 is not used, the loops formed by the machine will not be clipped.

It will be seen from the drawings that the body portion of'the knife needle 50 slides within the 'yoke 58 of the main needle, and it will be noted that when the main needle head 57 is in the position shown in Fig. 17, the head portion of the knife needle slides upwardly ina channel 72 (Fig. ,18) in one sideof the needleoap so that the upper endof the knife needle can pass through a hole the fabric 29 after such hole has been made by the point 60 of the main needle.

In operation, the operator occupies achair in front of the machine and the top of the latter is just abovethe operators knees' to allow free movementof'the sheet to be stitched. The sheet bearing the design or pattern to be worked is stretched on the frame and rests on top of the hood 27. When the operator, presses the foot operated switch (not, shown), controlling the mo tor, the threaded yarn needle 51 passes up vthrough the sheet, bringing with it the yarn, and

when the yarn needle has reached its highest position the knife 52 rises, due to its cam 53, severing the yarn 62,held in the slot '70. Now the knife needle 50 moves down, and when it has reached its lowest position within the hood 27, the ftension member moves down, and pin 64 comes in contact with yoke 58, causing the yarn needle to pull sheet 29 forward, and placing 5*! in the position shown in Fig. 1'7. Immediately afterwards, the knife needle 50-ismoved upwardly alongside the thread needle so as to catch the loop in the yarn above the sheet 29 in the notch 70.

At this time, the yarn needle 51 is drawn down by its cam until the point is below the sheet, and as the yarn needle descends, its yoke 58 comes into engagement with the screw 63 so that the pivoted portion of the needle is swung forward. the length of a stitch, prior to the time when the yarn needle is again raised to make a new stitch.

During the time the yarn needle is going downwardly, its pivoted end moving forwardly and then up through the burlap sheet, the knife needle and the tension member holds the previously formed loop from slipping back. After the yarn 'needlehas been moved to its highest point, the

cam 53.comes into engagement with the lower end of the knife 52 and causes the edge '71 of the knife to rise and sever the portion of the yarn which extends through the slot '70. Instantly, after the yarn is cut, the lower end of the knife disengages the cam 53, and the springv 68 returns the knife to its lower position, and at thesame time, the cam 44 lowers the knife needle 50. When the last mentioned needle reaches its lowest point,

which brings its top within the hood 27, the tension member 55 drops under the influence of the spring 66, due to the notch 43a (Fig. 10) in its cam.. As the member 55 moves downwardly, its pin 64 will abut against the yoke 58, and at such time, rock the pivoted portion 57 of the yarn needle in a counter-clockwise direction. At such time, the point of the yarn needle has penetrated the sheet 29 and reached its highest position and the knife needle is below said sheet, and as a result of the rocking movement about the pivot 59, the sheet 29 willbe shifted forwardly one stitch, or until the yarn-needle pivoted portion is above the knife needle 50. Therefore, when the knife nee'dleis again raised, it will move up-,

wardly along the channel '72 of the yarn needle, F

and atsuch time,'the pivoted portion of the yarn needleis prevented from rocking in a clockwise direction due to the engagement of the-abutment 64 with the yoke 58. The yarn needle -is held in this position until the knife needle is half way 'up,'or well throughthe sheet. The locking of the pivoted member by the abutment 64 is essential in order that the knife needle may rise through the same hole made by the yarn needle and inside the loop formed by the yarn needle Afterwards, the tension member quickly rises and holds the yarn from slipping back before the knife needle reaches the top of itsstrok'e. It is necessary to have a slight pressure on the sheet at all times, and it has been found that the weight ing all the time the yarn needle isin motion,:;

except while the'yarn needle is moving the burlap forward. At that time, the tension member drops into the notch 43a of its cam, and in dropping, the abutment 64 rocks the yarn needle to forma newstitch. The tension member haselzio three functions. It prevents the yarn from slipping back, while the yarn needle is in motion. Its

abutment 64 acts to cause the burlap to move forwardly. Furthermore, the abutment locks the pivoted portion of the yarn needle in place 'directly above the knife needle, until the latter is half way on its upward stroke.

The-stitches may be made longeror shorter by adjusting the length of the stitch screw 63. up or down.

The height ofthe loops'can be regulated by raisingor lowering the hood by means of the screws 28.-

Forzthe foregoing it struction, operation-and advantages of the invention may be readily understood, and it is apparent thatchanges may be made in the details disclosed, without departing from'the spirit of the invention, as expressed in the claims. What is claimed and desired to be secured by ing a pivoted thread carrying portion, a knife needle, a tension member, said knife needle having a thread receiving slot at its'end, means for reciprocating said needles and tension member in substantially parallel paths, and means for rocking the pivoted portion of the yarn needle during reciprocation of the yarn needle, the last mentioned means including a fixed support, and an adjustable element on said support engageable with the pivoted portion of the yarn needle.

3. An art stitcher including a yarn needle having a pivoted thread carrying portion, a knife needle, a tension member, said knife needle having a thread receiving slot at its end, means for reciprocating said needles and tension member in substantially parallel paths, and means for rocking the pivoted portion of the yarn needle during reciprocation of the yarn needle, the last mentioned means including an abutment carried by the tension member and engageable with the pivoted portion of the yarn needle.

4. An art stitcher including a yarn needle having a pivoted thread carrying portion, a knife needle, a tension member, said knife needle having a thread receiving slot at its end, means for reciprocating said needles and tension member in substantially parallel paths, and means for rocking the pivoted portion of the yarn needle during reciprocation of the yarn needle, the last mentioned means including an abutment carried by the tension member and engageable with the pivoted portion of the yarn needle, said abutment functioning to hold the pivoted portion of the yarn needle in parallelism with the knife needle during a portion of the upward stroke of the latter.

5. An art stitcher including a yarn needle having a pivoted thread carrying portion, a knife needle, a tension member, said knife needle having a thread receiving slot at its end, means for reciprocating said needles and tension member in substantially parallel paths, means for rocking the pivoted portion of the yarn needle during reciprocation of the yarn needle, a knife carried by the knife needle and arranged to sever the yarn while it occupies the slot of the knife needle, and means for actuating said knife while the knife needle is in a projected position. v

6. An art stitcher includinga yarn needle having a pivoted thread carrying portion, a knife needle, a tension member, said knife needle having a thread receiving slot at its end, means for reciprocating said needles and tension member in substantially parallel paths, and means for i rocking the pivoted portion of the yarn needle is believed that the conduring, reciprocation of the yarn needle, the means for reciprocating the yarn needle including a rotatable cam.

7. An art stitcher including a yarn needle having a pivoted "thread carrying portion, a.knife needle, a tension member, said knife needlehaving a thread receiving slot at its end, means for reciprocating said needles and tension member in substantially parallel paths, and means for rocking the pivoted portion of the yarn needle during reciprocation of the yarn needle, the means for reciprocating the knife needle including a rotatable cam.

8. An art stitcher including a yarn needle having a pivoted thread carrying portion, a knife needle, a tension member, said knife needle having a thread receiving slot at its end, means for reciprocating said needles and tension member in substantially parallel paths, and means for rocking the pivoted portion of the yarn needle during reciprocation of the yarn needle, the means 10. An art stitcher including a yarn needlev having a pivoted thread carrying portion, a knife needle, a tension member, said knife needle having a thread receiving slot at its end, means for reciprocating said needles and tension member in substantially parallel paths, means for rocking the pivoted portion of the yarn needle during reciprocation of the yarn needle, and a hood for said parts having a slot through which the upper ends of the needles and tension member reciprocate.

11. An art stitcher including a yarn needle having a pivoted thread carrying portion, a knife needle, a tension member, said knife needle having a thread receiving slot at its end, means for reciprocating said needles and tension member in substantiallyparallel paths, meansfor rocking the pivoted portion of the yarn needle during reciprocation of the yarn needle, a hood enclosing said parts and having a slot through which the upper ends of the needles and tension member reciprocate, said hood forming a support on which the sheet to be'operated upon rests, and means for adjusting the height of the hood relatively to the needles and tension member forregulating the height of the loops of yarn placed in the fabric by the needles. I

12. An art stitcher comprising a pyramidal hood over which a frame carrying a stretched fabric sheet may be'supported, said hood having 7 a slot in its peak, means arranged below the hood and operable through the slot for looping yarn on the fabric sheet and for feeding said sheet relatively to the hood, and holding means cooperating with the sheet for holding the loops and preventing withdrawal. of the loops. 7

13. An art stitcher including a hood above which a taut fabric sheet can be supported, said hood having an opening at its top, a yarn needle movable through said opening and having a pivoted thread carrying portion adapted to penetrate the sheet and to feed the latter, a knife needle also movable through said opening, a tension membermovable in the opening, said knife needle having a thread receiving slot at its upper end, means for reciprocating said needles and tension member upwardly and downwardly, and means for rocking the pivoted portion of the yarn needle during reciprocation of that needle.

14. In a machine of the character described, a needle having a base portion and a pivoted top provided with a fabric penetrating point and a yarn aperture, means for rocking said pivoted part while the needle base reciprocates in a rec-

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