US1577905A

US1577905A - Bead-sewing machine

Info

Publication number: US1577905A
Application number: US18355A
Authority: US
Inventors: Joseph A Groebli
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-03-26
Filing date: 1925-03-26
Publication date: 1926-03-23
Anticipated expiration: 1943-03-23

Description

March 23 1926.

J. A. GROEBLI BRAD SEWING MACHINE Fi led Mai'ch 26, 1925 2 Sheets-Sheet INVENTOR- Ma ATTORNEY V March 23 1926. 1,577,905

.1. A. GROEBLI BEAD SEWING MACHINE Filed March 26, 1925 v 2 sheds-sheet 2 1W3 o 7 26 Q I 4 IN V EN TOR. yaw 4. am BY jaw,

A TTORNEY.

Patented Mar. 23, 1926.

JOSEPH A. GROEBLI,

OF NEW YORK, N. vY.

READ-SEWING MACHINE.

Application filecl ls'iarch 26, 1925. Serial No. 18,355.

I '0 all whom it may concern:

Be it known that I, Josnrrr A. GRoEBLI, a citizen of the United States and resident of the city, county, and State of New York, have invented certain new and useful Improvements in Bead-Sewing Machines, of which the following is a specification.

My invention relates to that class of head sewing machines wherein a feeder foot substantially surrounds a stitch position, and means are employed for swinging the feeder foot forward to feed the fabric, and means are also employed for raising the feeder foot, swinging it backward, and lowering it to again engage the fabric. in machines of this class, as the feeder foot is comparatively broad and its contact with the fabric is therefore extended, it is important that the feeder foot should en gage the fabric evenly, so as to grasp it uniformly in the process of holding it inposition and pushing it forward.

The principal object of my invention is to provide means which will insure the face of the feeder foot being substantially parallel to the fabric when brought into contact with it, and the maintenance of that relation between the feeder foot and thefabric during the feeding movement.

Another object of my invention is to pro vide a plurality of carrying means for the feeder foot, and to elevate, depress and swing these carrying means synchronously, thereby facilitating the maintenance ofthe feeder foot in its proper position relative to the fabric.

In carrying out my invention 1 make use of certain mechanism for raising, lowering and swinging the feeder feet which 1 will now proceedto explain, referring, in sodoing, to the drawings, in all-the figures of which similar parts are designated by similar reference numerals, and in which Fig. 1 is a side elevation of the portions of the head of a bead sewingmachine with my improvedmechanism embodied therein; Fig. 2 is a view of the same looking to the right on Fig. 1; Fig. 3 is a plan of the bottom guide plate; Fig. 4 is a cross sectional View of part of the feeding mechanism taken on the line 4-4 of Fig. 2, looking down; Fig. 5 is a plan View of a hand governor for raising the feed; and Fig. 6 is a detail taken as on the line 66 of Fig. 2, looking to the right.

In my Letters Patent No. 1,445,764, of February 20th, 1923, I have shown means for raising and lowering and swinging in the desired direction the feeder bar and foot. Similar means may be used for the same purposes in carrying out my present improvement; and I have, therefore, omitted the details of the driving --mechan-is1n; for the means for raising and lowering the arm 125 of my present applicationmay be the same as those used for raising and lowering the arm 125 of my aforesaid patent; while the feeder foot is swung by means of a bar 111 which corresponds withbar 111 of my said patent, and is actuated in a similar manner.

The arm 125 and the slide 111 are mounted in the head 4 of the machine. The 'shaftlOl is provided with a collar 117 keyed to'it, pivoted in hearings in which collar is a pivoted lever 103.

The bar 111 carries a forked arm 113 in which a sleeve 114, on shaft 101,-may revolve. In this sleeveis formeda grooved seat 115, in which rests the end 116- of lever 103. The shank of thecollar 117 passes through an elongated rectangular opening in a disk 118, mounted rotatably inthe extension 104, secured as by bolt 5 andnut Gto plate 7. The lower end ofthe-lever 103 rests in a-socket in the disk 118.; and springs 119 hold the disk andcollar normally in the positions shown in Fig. 4. Vhen, therefore, the shaft 101 is rotated, it carries around with it the collar 117, and when the sleeve 114 is pushed down, it will,through the lever 103, swing the disk 118 andextension 104 and plate 7, in the proper direction to accomplish the desi-redfeeding operation. The arrangement of these parts down to the extension 104 is similar to the arrangement of parts correspondingly numbered in my aforesaid patent, where their operation is explained more in detail.

The movements of the plate 7 are transmitted to the feeder foot 106 through two

rods

9 and 10, the lower ends of which enter

sockets

11, 11, in the lugs on the foot 106, and are loosely secured therein as bypin 12 passing through enlarged holes in the ends of the rods, so that the feeder foot may have a certain amount of free play relative to the rods, to permit it to adjust itself readily to any slight inequalities of the work, and also to permit it to retain a horizontal position when swung laterally. One of the sockets in Fig. 2 has been broken away to show this construction more clearly.

The

rods

9 and 10 pass up through guide holes 13, 1a in the plate 7; and at their upper ends they enter sockets O in terminals 19, and are secured therein by pivots O passing through enlarged holes in the rods, so that the rods are swingably connected with the terminals 19. These terminals 19 are pivotally connected respectively to

arms

15 and 16 keyed to a shaft 1?, journalled in suitable bearings in the head of the machine. The rod 9 is also pivotally connected by a link 18 with the arm 125, so that the raising and the lowering of the arm 125 will rock the shaft 117 and thereby cause equal vertical movements of the

rods

9 and 10.

Another shaft 20 is mounted in suitable bearings in the head 4, and has two

arms

21, 22 fixed on it. These arms are provided respectively with

pins

23, 24, which pass slidably through

lugs

25 and 26 on the plate 7, so that the plate can be slid laterally to and fro on the pins, and will be swung even 1y at both sides if the shaft 20 is rocked.

To the bracket 8 on the lower part of the head 4 is attached an arm 27 provided with two

pins

28, 29, between which slides extension 80 on the plate 7, so that the plate 7 may be moved in any direction in substantially its own plane. A lever 85 is mounted on a pivot as 36 in the head of the machine, and is provided with a cam track 87 on which a roller 38 on slide 124 travels. This slide is normally depressed by spring 40 stretched between the arm 125 and the anchor point 11 on the head of the machine. By swinging the lever 35 around the slide 124 and arm 125 may be raised, thereby raising the foot 106 and keeping it lifted until the position of the lever is reversed.

In operation, therefore, the raising and lowering of the arm 125 will rock the shaft 17 and cause the

rods

9 and 10 to be raised and lowered in synchronism, carrying the feeder foot 106 up and down with them; and the horizontal movements of the feeder foot will be controlled through the movements of of the plate 7 produced as above described,

direction substantially in its own plane,

while it may also yield to slight inequalities in the work, but will be held evenly to duty, when actually feeding the fabric, by the spring 40, so that the drag of the feeding movement will be evenly and widely distributed without injury to the fabric or the ornamentation thereon.

This is quite important where large feeder feet of the ring type are employed, because if such a feeder foot is not evenly applied to the fabric, the fabric is likely to be rippled or distorted or to be insecurely held during the stitching operation, with resultant damage to the fabric and the work.

The particular embodiment of my invention which I have illustrated and described is to be construed as a typical form and not an exclusive one. The details of construction may be modified, as by means of mechanical equivalents and the like, without departing from the spirit of my invention and the scope of the claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent of the United States is 1. The combination in a sewing machine embodying stitch forming mechanism, of fabric feeding mechanism embodying an annular feeder foot, and means for raising and lowering the same including a rocking bar and a pair of parallel rods having pivotal connection at their lower endswith opposite points of the circumference of the feeder foot, and having pivotal connection with the rocking bar at their upper ends, and means for imparting a universal swinging movement to the rods and foot.

2. The combination in a sewing machine embodying stitch forming mechanism, of fabric feeding mechanism embodying an annular feeder foot, and means for raising and lowering the same including a rocking bar and a pair of parallel rods having a loose and lateral pivotal connection at their lower ends with opposite points of the circumference of the feeder foot, and having pivotal connection with the rocking bar at their upper ends, and means for imparting a universal swinging movement to the rods and foot.

3. The combination in a sewing machine embodying stitch forming mechanism, of fabric feeding mechanism embodying a rocking bar, an annular feeder foot, a pair of parallel rods having pivotal connection at their lower ends with opposite points of the circumference of the feeder foot, and having universal pivotal connection -with the rocking bar at their upper ends, and means, slidably engaging both of said rods, for imparting a universal swinging movement to the rods and foot.

4:- The combination in a sewing machine embodying stitch forming mechanism, of fabric feeding mechanism embodying a rocking bar, an annular feeder foot, a pair of parallel rods having pivotal connection at their lower ends with opposite points of the circumference of the feeder foot, and

having universal pivoted connection with the rocking bar at their upper ends, and means including a horizontally disposed plate slidable substantially in its own plane and engaging both of said rods for imparting a universal swinging move ment to the rods and foot.

5. The combination in a sewing machine embodying stitch forming mechanism, of fabric feeding mechanism embodying a rocking bar, an annular feeder foot, a pair of parallel rods having pivotal connection at their lower ends with opposite points of the circumference of the feeder foot, and having universal pivotal connection with the rocking bar at their upper ends, means, including a horizontally disposed plate slidable substantially in its own plane in any direction and engaging both of said rods for imparting a universal swinging movement to the rods and foot, and a plurality of plate carrying means interconnected to move in unison.

6. The combination in a sewing machine embodying stitch forming mechanism, of fabric feeding mechanism embodying an annular feeder foot, a plurality of raising and lowering means loosely and pivotally attached at opposed points to the feeder foot, and having universal connections with a common raising and lowering means; and means for giving a universal swinging movement to the feeder foot, whereby the face of the feeder foot is kept substantially parallel to the line of feed, but the foot may adjust itself to inequalities in the work.

7. In a sewing machine, the combination with stitch forming mechanism of universal feeding mechanism embodying a feeder foot and a plurality of means for carrying raising and lowering the feeder foot, such means being connected at various points to the feeder foot, and common means for imparting to each of theplu rality of means identical and unvarying equality of extent of movement.

8. In a sewing machine, the combination with stitch forming mechanism of universal feeding mechanism embodying a feeder foot and a plurality of shifting means connected tosaid feeder foot at various points, of common means for actuating all of the plurality of shifting means alike to shift the feeder foot in its own plane.

JOSEPH A. GROEBLI.