US2637289A

US2637289A - Tufting machine

Info

Publication number: US2637289A
Application number: US779148A
Authority: US
Inventors: Jr Oscar Grant; Clovis H Jackson
Original assignee: ART RICH Manufacturing Co
Current assignee: ART RICH Manufacturing Co; ART-RICH MANUFACTURING Co
Priority date: 1947-10-10
Filing date: 1947-10-10
Publication date: 1953-05-05
Anticipated expiration: 1970-05-05

Description

May 5, 1953 0. GRANT, JR, ET AL TUFTING MACHINE 3 Sheets-Sheet 2 Filed Oct. 10, 1947 INVENTOR.

w Ms. K

RANT

y 1953 0. GRANT, JR, ETAL 2,637,289

TUFTING MACHINE Filed Oct. 10, 1947 5 Sheets-Sheet 5 r 52. a 65 m IN VEN TOR.

OSCAR GRANT, JR.

Patented May 5, 1953 UNITED STATES PATENT OFFICE TUFTING MACHINE Oscar Grant, In, and Clovis H. Jackson, Dalton,

assignors to Art-Rich Manufacturing Claims. 1

This invention relates to tufting machines, and relates more particularly to tufting machines for automatically and simultaneously producing a series of aligned loops or tufts in a single operation.

It is an important object of our invention to provide a novel arrangement for mounting for the looper arms and cutters whereby adjacent longitudinal rows of loops or tufts may be closely spaced.

Another object of Our invention is to provide a novel means for holding the looper arms and cutters and for oscillating the holding means in predetermined relationship.

A further object of our invention is the provision of a novel driving connection for moving the looper arm block whereby the stroke of the looper arms may be adjusted to the desired degree.

Other objects of our invention, together with certain details of construction and combinations of parts, will appear from the followin detailed description and appended claims:

In the drawings wherein a preferred embodiment of our invention is shown,

Fig. 1 is a fragmentary View, in perspective, of a sewing machine head and mechanism in connection with which our invention is employed;

Fig. 2 is a bottom plan View, showing the mountings for the looper arms and cutters in position;

Fig. 3 is a detail view of the means for mounting the looper arms and cutters and for rocking said mountings;

Fig. 4 is a fragmentary detail view, on an enlarged scale, showing particularly the arrangement for mounting the cutters;

Fig. 4a is a fragmentary top plan view showing the staggered relationship of the looper arm holders.

Fig. 5 is a side elevational view, on an enlarged scale, of the mountings for the looper arms and cutters; and

Fig. 6 is a detail view of the means for rocking the looper arm block from the main drive shaft.

Like reference numerals indicate like parts throughout the several views of the drawings.

Referring now to the drawings for a detailed description of this invention, the reference numeral 6 indicates a portion of the head of a sewing machine of a well known type, the base I of which is shown in Fig. 2. Mounted for reciprocation in the head by the usual main drive shaft (not shown) passing horizontally through the head is a needle bar rod 8 to the lower end of which is secured a needle holding bar 9 in which is held a plurality of needles H. Also mounted in the head is a presser bar 12 carried by a bracket 13 fixed to the end of a vertical rod M. A spring 15 surrounds rod M and a finger lever [B is provided to lower and raise the presser bar i2 against the action of said spring l5. The feeder mechanism for feeding the fabric through the machine in cooperation with the presser bar i2 includes a feeder plate I! on which is mounted a plurality of serrated feed dogs [8. Normally a slotted throat plate is provided between the presser bar 22 and feeder plate ll through openings in which plate the feed dogs are adapted to reciprocate. This throat plate has been omitted in the interest of clarity.

Feeder plate I! is rigidly mounted on a bracket H) which through arms 2c is attached to rear feed shaft 2i mounted on

bolts

22 and 23, which bolts are pivotally supported in brackets 2t and 25 re spectively integral with the base 1. The rear feed shaft 2| is given a rocking movement by means of a linkage, generally indicated by reference numeral 26, connected to the rear feed shaft at 2i and, through the usual arm and eccentric (not shown), to the main drive shaft. Bracket i9 is provided with bifurcated

arms

28 and 23 in the slots 3| of which are slidably carried the ends of stub shafts 32 and 33 respectively. These stub shafts are carried 1n collar brackets 34, the collars 35 of which are adjustably mounted on front feed shaft 36, a set screw 37 holding the collars in adjusted position. The front feed shaft 36 is mounted on

bolts

38 and 39 which are pivotally supported in brackets 4i and 42 respectively, integral with base i. The front feed shaft 36 is given a rocking movement by means of a linkage, generally indicated by reference numeral e3, connected by an arm and eccentric (not shown) to the main drive shaft of the machine. The construction and arrangement set forth above is such that the feeder plate I! with its feed dogs is is not only given an up and down movement but also a back and forth movement, thus effecting the desired feeding motion.

Journaied m a bracket 44 fixed to the underside of base I by a bolt #35 is a shaft 46. The extremities of the shaft are provided with bolts 4i and it which are adapted to be pivotally carried in brackets t9 and 5!, respectively, suitably fixed to the base 1. The shaft 46 is adapted to be rocked by the main drive shaft through suitable connections hereinafter described.

Hooked arms 52 and 53, the lower extremities of which are attached to and rockable with shaft 46, being held thereon by means of clamping screws carry at their upper or hooked ends thereof a looper arm block 55. Set in staggered relation and predetermined pattern in said block 55 are a plurality of slotted, cylindrical looper arm holders 53 for holding the shanks 5'! of looper arms 5-8. Set screws maintain holders 56, which are vertically and angularly adjustable, in position.

A cutter block 58 is pivotally supported in brackets 42 and by means of bolts El and 62. Set in staggered relation and predetermined pattern in said cutter block are a plurality of slotted, cylindrical cutter holders The cutter holders, which are adapted to hold cutter blades 64, are horizontally and angularly adjustable, and are held in position by means of set screws 65. Cutter blades are made of any suitable metal which may be sharpened, and which may be flexed to engage, in sliding relationship, the sides of the bills 55 of the looper arms.

Means are provided to rock the cutter block 59 in timed relation to the rocking movement of the looper arm block 55 in order to give a cutting movement to the cutter blades 64 for cutting the loops on the looper bills, which loops are formed when the needles ii pierce the fabric, as is well understood in the art. To this end, a lever arm 6'! is fixed to the cutter block 553 and a lever arm 68 is adjustably mounted on rocker shaft 48, a link 69 is pivotally attached at ll and 12 to n operatively connect said lever arms. The construction outlined above is such as to produce a shorter stroke in the movement of the looper arms and the cutters, making for more efiicient operation of the tufting machine.

On the head 6 are mounted guide bars 73 and Hi having guide eyes l5 and it through which thread i! from a suitable source (not shown) passes on the way to the needles.

The arrangement set forth above for mounting the looper arms and cutters is such that the number of looper arms and cutters which can be mounted on the holders therefor is substantially increased. For example, as shown in Fig. 2, twenty cutters are shown mounted on the cutter block. In similar fashion, twenty looper arms may be mounted on the looper arm block in cooperating relation to the cutters. More cutter and looper arms can be added to each block if an over-all tuft effect is desired. Moreover, the novel mountings cf the present invention permit of the placing of the looper arms and cutters in many arrangements to produce many desirable ornamental efiects: Thus, with the arrangement shown in Fig. 2, there is produced a tufted fabric having spaced longitudinal rows of stripes, each of which is formed of four rows of tufts so closely spaced, i. e., on the order of about one-eighth of an inch apart at the stitch, with respect to each other as to give the appearance of a single broad stripe.

Novel means are provided for rocking shaft 3B. This rocking means is adjustable so as to limit the stroke of the looper arms to produce loops of such size as that required by the very short nap desired, and comprises a drive rod, generally indicated by reference '18, made up of levers T9 and BI connected by a linkage 82. The lower extremity of lever is is split and is attached to shaft 46, being held in position by means of a clamping screw 33. The upper extremity of lever 19 is provided with a series of holes 84 in which one end of linkage 82 may be adjustably and pivotally mounted. The other end of linkage 82 is similarly mounted in one of a series of holes 85 in lever 8|. The lower extremity of lever 8| is split and is pivotally carried on a stub shaft 86 fixed to the base I of the machine, being held on said stub shaft by means of a clamping screw 82'. The upper extremity of said lever 8! is pivotally mounted at 88 on a link 89 which is fixed to and operated by the main drive shaft of the machine.

A most distinctive feature of the present invention resides in the provision of looper arms and cutters mounted on staggered elements but extending in a straight line for coaction with a straight line of needles. The looper arms and cutters are aligned with their mounting portions being staggered. The elements 55 are staggered and the looper arms G6 are of difierent length so as to extend outwardly with their bill edges in line.

The embodiment of our invention shown and described herein is to be considered merely as illustrative, as our invention is susceptible to variation, modification and change within the spirit and scope of the appended claims.

What we claim as new and desire to secure by Letters Patent is:

1. In a tufting machine for simultaneously producing a series of aligned tufts in a base material, the combination with a plurality of reciprocable needles, a plurality of looper arms and a plurality of cutters cooperating with each other to form tufts, of a block for carrying said looper arms, a block for carrying said cutters, a shaft operatively connected to said blocks, and adjustable means, extending transversely the width of said machine and being positioned below said looper arms and cutters, and being adjustable so as to limit the stroke of the looper arms to produce loops of such size as to regulate the thickness of the nap for rocking said shaft, said looper arms and said cutters being provided with holders mounted in staggered relationship of said respective blocks for carrying the looper arms and for carrying the cutters, but extending in a straight line for coaction with a straight line of needles.

2. In a tufting machine for simultaneously producing a series of aligned tufts in a base material, the combination with a plurality of reciprocable needles, a plurality of looper arms and a plurality of cutters cooperating with each other to form tufts, of a block for carrying said looper arms, a block for carrying said cutters, a shaft operatively connected to said blocks, and means, extending transversely the width of said machine and being positioned below said looper arms and cutters, and being adjustable so as to limit the stroke or" the looper arms to produce loops of such size as to regulate the thickness of the nap comprising a plurality of levers adjustably con nected to each other for rocking said shaft, said looper arms and said cutters being provided with holders mounted in staggered relationship of said respective blocks for carrying the looper arms and for carrying the cutters, but extending in a straight line for coaction with a straight line of needles.

3. In a tufting machine for simultaneously producing a series. of aligned tufts in a base material, the combination with a plurality of reciprocable needles, a plurality of looper arms and a plurality of cutters cooperating with each other to form tufts, of a block for carrying said looper arms, mounts on said looper arm block for holding said looper arms, a block for carrying said cutters, mounts on said cutter block for holding said cutters, a single shaft, extending transversely the width of said machine and being positioned below said looper arms and cutters, and being adjustable so as to limit the stroke of the looper arms to produce loops of such size as to regulate the thickness of the nap for rocking said blocks in predetermined relation to each other, and a drive rod comprising a pair of relatively adjustable levers for rocking said shaft, said looper arms and said cutters being held by said mounts respectively in staggered relation on said respective blocks, but extending in a straight line for coaction with a straight line of needles.

l. in a tufting machine for simultaneously producing a series of aligned tufts in abase material, the combination with a plurality of recipcable needles, a plurality of looper arms and a plurality of cutters cooperating with each other to form tufts, of a block for carrying said looper arms, mounts on said looper arm block for holding said looper arms, a block for carrying said cutters, mounts on said cutter block for holding said cutters, a single shaft, extending transversely the width of said machine and being positioned below said looper arms and cutters, and being adjustable so as to limit the stroke of the looper arms to produce loops of such size as to regulate the thickness of the nap for rocking said blocks in predetermined relation to each other, and a drive rod comprising a pair of relatively adjustable levers for rocking said shaft, one of said levers being connected to said shaftand the other of said levers being pivotally mounted on the'base of said tufting machine, said looper arms and said cutters being held by said mounts respectively in staggered relation on said respective blocks, but extending in a straight line for coaction with a straight line of needles.

5. In a tufting machine for simultaneously producing a series of aligned tufts in a base material, the combination with a plurality of reciprocable needles, a plurality of looper arms and a plurality of cutters cooperating with each other to form tufts, of a block for carrying said looper arms, mounts on said looper arm block for holding said looper arms, a block for carrying said cutters, mounts on said cutter block for holding said cutters, a single shaft, extending transversely the Width of said machine and being positioned below said looper arms and cutters, and being adjustable so as to limit the stroke of the looper arms to produce loops of such size as to regulate the thickness of the nap for rocking said blocks in predetermined relation to each other, and a drive rod comprising a pair of levers and a link adjustably and pivotally connecting said levers for rocking said shaft, said looper arms and said cutters being held-by said mounts respectively in staggered relation on said respective blocks, but extending in a straight line for coaction with a straight line of needles.

6. In a tufting machine for simultaneously producing a series of aligned tufts in a base material, the combination with a plurality of reciprocable needles, a plurality of looper arms and a plurality of cutters cooperating with each other to form tufts, of a block for carrying said looper arms, mounts on said looper arm block for holding said looper arms, a block for carrying said cutters, mounts on said cutter block for holding said cutters, a single shaft, extending transversely the Width of said machine and being positioned below said looper arms and cutters, andbeing adjustable so as to limit the stroke of the looper arms to produce loops of such size as to regulate the thickness of the nap for rockin said blocks in predetermined relation to each other, and a drive rod comprising a pair of levers and a link adjustably and pivotally connecting said levers for-rocking said shaft, one of said levers being connected to said shaft and the other of said levers being pivotally mounted on the base of said tufting machine, said looper arms and said cutters being held by said mounts respectively in staggered relation on said respective blocks, but extending in a straight line for coaction with a straight line of needles.

'7. In a tufting machine for simultaneously producing a series of aligned tufts in a base material, the combination with a plurality of reciprocable needles, of a plurality of looper arms, a plurality of deformable cutters, said needles, looper arms and cutters cooperating to form tufts, a block for carrying said looper arms, angularly adjustable slotted, mounts for holding said looper arms arranged-on said looper arm block, a block for carrying said cutters, angularly adjustable slotted, mounts for holding said cutters arranged on said cutter block, means, including a rocker shaft, extending transversely the width of said machine and being positioned below said looper arms and cutters, and being adjustable so as to limit the stroke of the looper arms to produce loops of such size as to regulate the thickness of the nap, an arm connecting said rocker shaft with said looper arm block and a linkage connecting said rocker shaft with said cutter block, for rocking said blocks in predetermined relation to each other, and a drive rod comprising a pair of relatively adjustable levers for rocking said shaft, said looper arms and said cutters being held by said mounts respectively in staggered relation on said respective blocks, but extending in a straight line for coaction with a straight line of needles.

8. In a tufting machine for simultaneously producing a series of aligned tufts in a base material, the combination with a plurality of reciprocable needles, of a plurality of looper arms, a plurality of deformable cutters, said needles, looper arms and cutters cooperating to form tufts, a block for carrying said looper arms, angularly adjustable slotted, mounts for holding said looper arms arranged on said looper arm block, a block for carrying said cutters, angularly adjustable slotted, mounts for holding said cutters arranged on said cutter block, means, including a rocker shaft, extending transversely the width of said machine and being positioned below said looper arms and cutters, and being adjustable so as to limit the stroke of the looper arms to produce loops of such size as to regulate the thickness of the nap, an arm connecting said rocker shaft with said looper arm block and a linkage connecting said rocker shaft with said cutter block, for rocking said blocks in predetermined relation to each other, and a drive rod comprising a pair of relatively adjustable levers for rocking said shaft, one of said levers bein connected to said shaft and the other of said levers being pivotally mounted on the base of said tufting machine, said looper arms and said cutters being held by said mounts respectively in staggered relation on said respective blocks, but extending in a straight line for coaction with straight line of needles.

9. In a tufting machine for simultaneously producing a series of aligned tufts in a base material, the combination with a plurality of reciprocable needles, of a plurality of looper arms, a plurality of deformable cutters, said needles, looper arms and cutters cooperating to form tufts,

a block for carrying said looper arms, vertically and angularly adjustable slotted, .mounts for holding said looper arms arranged on said looper arm block, a block for carrying said cutters, horizontally and angularly adjustable slotted, mounts for holding said cutters arranged on said cutter block, means, including a rocker shaft, extending transversely the width of said machine and being positioned below said looper arms and cutters, and being adjustable so as to limit the stroke of the looper arms to produce loops of such size as to regulate the thickness of the nap, an arm connecting said rocker shaft with said looper arm block and a linkage connecting said rocker shaft with said cutter block, for rocking said blocks in predetermined relation to each other, and a drive rod comprising apair of relatively adjustable levers for rocking said shaft, said looper arms and said cutters being held by said mounts respectively in staggered relation on said respective blocks, but extending in a straight line for coaction with a straight line of needles.

10. In a tuftin machine for simultaneously producing a series of aligned tufts in a base material, the combination with a plurality of reciprocable needles, of a plurality of looper arms, a plurality of deformable cutters, said needles, looper arms and cutters cooperating to form tufts, a block for carrying said looper arms, vertically and angularly adjustable slotted, mounts for holding said looper arms arranged on said looper arm block, a block for carrying said cutters, horizontally and angularly adjustable slotted, mounts for holding said cutters arranged on said cutter block, means, including a rocker shaft, extendin transversely the width of said machine and being positioned below said looper arms and cutters, and being adjustable so as to limit the stroke of the looper arms to produce loops of such size as to regulate the thickness of the nap, an arm connecting said rocker shaft with said looper arm block and a linkage connecting said rocker shaft with said cutter block, for rocking said blocks in predetermined relation to each other, and a drive rod comprising a pair of relatively adjustable levers for rocking said shaft, one of said levers being connected to said shaft and the other of said levers being pivotally mounted on the base of said tuiting machine, said looper arms and said cutters bein held by said mounts respectively in staggered. relation on said respective blocks, but extending in a straight line for coaction with a straight line of needles.

OSCAR GRANT, JR. C. H. JACKSON.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 362,368 Dikeman May 3, 1887 1,830,463 Foster et a1 Nov. 3, 1931 2,269,837 Windham Jan. 13, 1942 2,411,267 Hamricl; Nov. 19, 1946 2,423,605 McCutchen July 8, 1947 FOREIGN PATENTS Number Country Date 436,698 Great Britain Oct. 16, 1935