US2866423A

US2866423A - Chenille sewing machine

Info

Publication number: US2866423A
Application number: US455652A
Authority: US
Inventors: Erby L Passons
Original assignee: Broad Street Machine Co Inc
Current assignee: Broad Street Machine Co Inc
Priority date: 1954-09-13
Filing date: 1954-09-13
Publication date: 1958-12-30
Anticipated expiration: 1975-12-30

Description

Dec, 30, 1958 E. L. PAssoNs CHENILLE sswmc MACHINE Filed Sept. 13, 1954 2 Sheets-Sheet 1 INVENTOR Erby L. Passons ATTORNEY .irll illl Dec. 30, 1958 Filed Sept; 13. 1954 E. L. PASSONS CHENILLE SEWING MACHINE 2 Sheets-Sheet 2 Fig. 5

INVENTOVR Erbg L. Passons ATTORN EY r assent Patented Dec. 30, 1958 CHENILLE SEWING MACHINE Erby L. Passons, Chattanooga, Tenn, assignor to Broad Street Machine Company, Chattanooga, Tenn., a partnership Application September 13, 1954, Serial No. 455,652

4 Claims. (Cl. 112-78) This invention relates to chenille sewing machines and more particularly to machines for sewing chenille patterns on a fabric. It is especially designed for the sewing of loops of chenille tufts.

The types of designs contemplated by this invention have been previously sewn by hand, by a combination of hand and machine, and solely by machinery of a complicated nature, all of which methods have proved unsatisfactory.

It is an object of this invention to overcome the disadvantages incorporated in the above methods by making an improvement in the chenille sewing machine as dis closed in the United States patent to Julius Montgomery,

No. 2,573,043, whereby individual loop patterns may be formed in the chenille fabric.

Another object of this invention is to provide means for rotating the cloth beneath a rotating needle such as that disclosed in the above patent to Montgomery.

Further objects and advantages of the invention will be apparent from the following description taken in conjunction with the drawings, wherein:

Fig. 1 is a side elevation of a chenille sewing machine incorporating an embodiment of the invention;

Fig. 2 is a horizontal section taken along the lines 2-2 of Fig. l, with fabric included; 7

Fig. 3 is a side elevation, partly in section, taken along the lines 33 of Fig. 2;

Fig. 4 is a diagram of the design formed when a pair of needles and the cloth rotate in the same direction; and

Fig. 5 is a diagram of the design formed when one needle and the cloth rotate in opposite directions.

Briefly stated, the invention comprises a circular work holding means for holding the fabric in taut position between a needle rotating in a circular path and the cooperating hook and cutter means rotating in an identical path. The work holding means is adapted to rotate about an axis offset from and parallel to the axis of roration of the needle, by an attached ring gear. This gear is rotated by a pinion which is linked to gears of varying ratios and ultimately connected to the driving means for the entire machine. The work holding means is provided with grips preferably of saw-tooth configuration to hold the fabric securely but without danger of tearing.

With the driving means in operation, the cloth is rotated about a fixed axis, while the needle is also revolved about a fixed axis parallel to the axis of the rotating fabric. The needle is preferably geared so that it will make several revolutions to a single revolution for the fabric. If the needle and the fabric are turning in the same direction, a floral design composed of several loops simulating petals will be formed. The number of loops will be governed by the number of revolutions of the needle for each revolution of the fabric. If the needle makes six revolutions to the fabrics one, there .will be six loops in the floral design. If the needle is rotated in the opposite direction from the rotation of the fabric, another loop design will be formed.

Referring now to the drawings in more detail, Fig. 1 discloses a machine basically similar to the one disclosed in Fig. 1 of U. S. Patent No. 2,573,043, and includes a base 10 with an upright 11 supporting arm 12. Through the arm 12 extends main shaft 13, which can be driven by a motor, not shown, through pulley 14 adjacent hand wheel 15. A second pulley 16 adjacent the pulley 14 is connected by a belt 17 to pulley 18 fixed to needle shaft 19, mounted in bearings 20 above the arm 12. The needle shaft 19 rotates the needle bar 21 through the worm 22, at the end of the needle shaft 19, and the worm wheel 23. The needle shaft 19 also rotates the hook and cutter mechanism Within the housing 24 through the chain and sprocket connection 25, the shaft 26, the chain and sprocket connection 27, and the shaft 28, the end of which is a worm, not shown, adapted to drive the worm wheel 29 to rotate the hook and cutter mechanism at the same speed as the rotation of the needle bar 21. The main shaft 13 also has an eccentric 30 which reciprocates link 31, causing the rock shaft 32 to pivot in its bearings at 33 and reciprocate the hook and cutter mechanism through the rod 34. The main shaft 13 is also provided'with means to reciprocate the needle bar, not shown, in amanner well known to the art. A needle holder bar 35 is attached at the bottom of the needle bar 21 and may be adapted to hold one or more needles 36 so that they may revolve in a circle about the needle bar as an axis when the machine is in operation. Through the various mechanisms described, the hook 37 and the cutter 38, shown in Fig. 3, are likewise adapted to travel in the same path as the needles and cooperate with each other in a well-known manner to sew chenille fabric designs. Thread 39 is fed from the spring tension device 4tl, through the needle bar 21, to the needles 36.

The improvement to this machine comprises a circular work holding means which is designed to rotate about an axis parallel to the axis of the rotating needle bar, and adapted to carry the fabric, into which a design is to be sewn, between the needles and the hook and cutter mechanism. Fig. 2 is a horizontal sectional view of the improvement showing the relative positions of the needle bar, the needle and the work holding means, showing the relative movement of each, and a partial fabric pattern resulting therefrom.

As shown in Fig. 3, the improvement consists of a ring 41 internally toothed and adapted to rotatably slide within a circular recess 42 in the base 10, the top of the gear ring 41 being flush with or a little below the top surface of the base It Keepers 43 are secured to the top of the base 10 so as to overlap the ring 41 and retain the ring in the recess 42; The saw tooth blade 44 is sweated around the outside of a ring base 5 which is fixedly secured to the top of the gear ring 41. The internally toothed gear ring 41 is driven by pinion 46 fixed to shaft 47, at the end of which are spiral grooves 48 adapted to be driven by worm 49. The worm 49 is linked through reduction gears Sit and chain and sprocket 51 to the shaft 26, which is linked to the needle shaft 19 and ultimately to the main drive shaft 13, as previously described. In this manner, the ring 41 is rotated about its center as an axis at a reduced speed, and carries with it the saw tooth blade 44 designed to grip the bottom of the fabric upon which the design is sewn.

Presser foot 52 is adapted for vertical movement only, and does not rotate with. the ring 41 and the saw tooth blade 44 in operative position. A circular recessed track or race 53 in the bottom of the presser foot 52 is designed to loosely engage the saw tooth blade d4 in operative position so that the blade may rotate the fabric, the top of which slides in the stationary track 53. For vertical adjustment, the handle 54 is operated, causing the rod 55 attached to the cross braces 56 across the 3 top of the presser foot 52 to move down or up, thus slidably and frictionally engaging or disengaging the fabric upon which the designfis formed.

The operation of the machine is.as follows:

The fabric upon which the chenille pattern is to be formed is placed upon the base '10 and on top of thesaw tooth blade .44 so that the blade firmly engages the, fabric. The presser foot 52 is lowered so that-the circular track 53 therein loosely engages the saw-tooth'blade 44, to maintain the fabric in position yet allowing it to slide in the track. The machine is now operated in the same manner as is the machine in US. Patent No. 2,573,043. The needles 36 and the hook and cutter 37 and 38 revolve in the same circular path, and cooperatewith each other to reciprocate the thread through the fabric and.to cut the loops formed thereby.

As the needles 36 are forming tufts at various points around the periphery of circles having the needle bar axis as their centers, the fabric which is engaged between the presser foot 52 and the saw tooth blades '44 is fed in a circular path beneath the needles. The circular path of the fabric has an axis which is parallel to and offset from the needle bar 21 so that thecircular path of a needle is preferably between the center and the periphery of the rotating fabric. If a pair of needles are revolving in the same direction as the fabric, as indicated in Fig. 2, a design will be formed as shown in Fig. 4. If .a single needle is revolving in a direction opposite from the rotation of the fabric, a design as shown in Fig. 5 will be obtained. As mentioned before, the number of loops or petals for each floral design will be the number of revolutions of the needles for each revolutionof the fabric. More than one needle will generate additional loops within loops, as shown in Fig. 4.

When the pattern is completed, the presser foot is raised, the cloth is shifted so that all the loops are pulled to the back of the hooks, and the machine is turned, preferably by hand, until the knives or cutters rise and cut these loops to form tufts, as described in U. S. Patent No. 2,573,043. The fabric may then be moved to a new position to form another design.

It will be obvious to those skilled in the art that various changes may be made in the invention, without departing from the spirit and scope thereof, and therefore the invention is not limited by that which is shown in the drawings and described in the specification, but only as indicated in the appended claims.

What is claimed is:

1. A machine for forming chenille patterns on a fabric comprising a base having a circular recess therein, a ring adapted to rotatably slide in said recess, said ring having teeth projecting upwardly therefrom for holding a portion of fabric in taut condition, a ring-shaped presser foot having a circular recess in the bottom thereof for loosely engaging the teeth on said ring, drive means for uninterruptedly rotating said ring, means for raising and lowering said presser foot relative to said ring whereby said presser foot remains stationary while said ring slidably carries the perimeter of said fabric portion in said presser foot recess, a needle bar carrying a needle mounted for reciprocation in a direction perpendicular to the plane of said ring, the longitudinal axis of said needle bar being fixed and spaced from the rotational axis of said ring, means mounted on said needle bar for holding said needle offset from the longitudinal axis of said needle bar, means for reciprocating said needle through the fabric held by said ring, means for revolving said needle about the longitudinal axis of said needle bar in a circular path within the perimeter of said ring,

and means for operating said ring drive means, said needle reciprocating means and said needle rotating means in synchronous relation.

2. A machine for forming chenille patterns on a fabric comprising a base, a ring having friction means for holding a portion of said fabric in taut condition and rotatably mounted in said base, an annular presser foot adapted to cooperate loosely with the friction means on said ring in holding said portion of fabric on said ring, said presser foot remaining stationary while said ring rotates said portion of fabric, means for raising and lowering said presser foot relative to said ring, a reciprocable needle bar having its longitudinal axis fixed and spaced from the rotational axis of said ring, said needle bar carrying a needle offset from its longitudinal axis and mounted for reciprocation through said fabric within the confines of said annular presser foot, and means for simultaneously revolving said needle about the longitudinal axis of said needle bar, reciprocating said needle bar and continuously rotating said ring about its center.

3. A machine for forming chenille patterns on a fabric comprising a base, a ring having teeth projecting upwardly therefrom for holding a portion of said fabric in taut condition and rotatably mounted in said base, an annular presser foot having a race in its lower surface for loosely engaging the teeth on said ring, a reciprocable needle bar having its longitudinal axis fixed and spaced from the rotational axis of said ring, said needle bar carrying a needle offset from its longitudinal axis and mounted for reciprocation through said fabric within the confines of said annular presser foot, and means for simultaneously revolving said needle about the longitudinal axis of said needle bar, reciprocating said needle bar and continuously rotating said ring about its center.

4. A machine for forming chenille patterns on a fabric comprising a base, a ring rotatably mounted in said base, said ring having teeth projecting upwardly therefrom for holding a portion of fabric in taut condition, an annular presser foot having a circular recess in its lower surface for loosely engaging the teeth on said ring, saidpresser foot remaining stationary while said ring slidably carries the perimeter of said fabric portion in the circular recess of said presser foot, means for raising and lowering said presser foot relative to said ring, a reciprocable needle bar having its longitudinal axis fixed and spaced from the rotational axis of said ring, said needle bar carrying a needle offset from its longitudinal axis and mounted for reciprocation within the confines of said annular presser foot through said fabric, and means for simultaneously revolving said needle about the longitudinal axis of said needle bar, reciprocating said needle bar and uninterruptedly rotating said ring.

References Cited in the file of this patent UNITED STATES PATENTS 652,326 Parkes June 26, 1900 1,267,566 Loeb May 28, 1918 1,420,319 Kelley June 20, 1922 1,431,591 Lucy Oct. 10, 1922 2,007,819 Tillett July 9, 1935 2,037,725 Kaiser Apr. 21, 1936 2,508,852 Blurnfield May 23, 1950 2,540,901 Montgomery Feb. 6, 1951 2,573,043 Montgomery Oct. 30, 1951 2,607,042 Schloss Aug. 19, 1952 2,656,803 Montgomery Oct. 27, 1953 FOREIGN PATENTS 20,336 Great Britain Oct. 11, 1901