USRE4840E - Hiram plummer - Google Patents

Description

UNITED STATES PA'Ililil'l OFFICE.

EIEAM "PLUMMEE, or BROOKLYN, NEW 'ronirf `AllVIPRClI'ElVlENT lN SEW'lNG-MACHINES.

Specification forming part of Letters Patent No. 79,856, dated uly ljl, 1868; reissue No. 4,8i0, dated April 2, 1872.

' exact 'description of said invention.

This 'sewing-machine is especiallyadapted tothe sewing' of straw and other 'braids for bonnets and hats. 'It is also capable of 'use 1n sewing' sails, making bags, and performing other kinds of work, such asthe seams of garments and sewing generally.

In,'myinachinev the needle reciprocates beneath the bed, and the fabric is presented to the sanieiil a crimped or folded forni, so that the needle comes out upon the'sa'me side of the fabric as that-on which it entered, andthe parts are adapted 'to guiding the fabric and presenting the same to .the sewing mech a'nism.

The stitch that is produced consists of two I threads passing through the fabric diagonal-- ly, so as to shown short stitch on the right side of the material, and the thread on the other side fronrthe lpoint where the needle enters the goods is looped to the next point of perforation, and either interloeks. with' a second or shuttle-thread or Withl'the loop of` needle-thread. The character of the stitch will be understood from vthe foregoing and a reference to Fig. 4, in which the shuttle-thread is shown by a' dotted line, and the needlethreadin full lines.

It a looping-instrnment were employed in this machine instead ot' a shuttle, the single thread would be concatenated in the form shown in Fi g. 5; the stitch, however, 'might be ditlicult to tighten.

In the drawing, Figure I is a plan oi' said sewing-machine.l Fig. 2 is a side view with the parts of the frame and bed in section. Fig. 3 is' a section at the line x a: f Fig. l.

a is thcrbed of the linachine, -b the actuat ing `wheel, giving motion to the shaft c, upon which is a cam, d, that reciprocates the needle-bar e and needle i by sliding said needlebare in ways provided for it in the bed c. The thread from the spool f passes to a prop- 'er tension device g of any suitable character;

thence through the take-up arm h to the needle. This talreup arml h is on a fulcrum, 2,- and a retraeting iinger,'3, on the under side et' the needle-bar c, acting nearer the i'ulcrum 2 than does the slot in the needle-bar, causes the upper end ot' the taleup arm to travel sufficiently to give the proper amount of thread to allow the shuttle to1 pass through theloop; and the finger also releases said take-up arm withsuicient rapidityon the re;- turn movement of the needle-bar to'allow the spring 4 to act on the taheup argh la and draw the thread up out of. the way of Athe needle in going for-ward again.

In this inachine'the stitchusually isorn much greater length than in ordinary sewingfinachines, because it is found in sewing braids for bonnets, &c.,1-hat the stitches should be seine little distance apart, and for this reason a greater length of thread fs drawn oil' to form ast-itch than in ordinary sewing; and, in consequence oi' the thread passing oi' nearly at right angles to'the needle in reaching the goods, the pull of such thread as the needle starts might' bend the needle. I therefore form. the slot in the needlebar e, so that-as the needle draws back out of the cloth theupper end of vthe take-up arm k will draw on theA thread 'and pull an extra length off the spool. to give sutcicnt slack thread for theneedle to'go freely forward into the fold ol goods to forni the next stitch.' The fold of the goods through which the needle passes is made by. the folder o, that is moved up .l down between the supports 5 and 6 ot the bed, and saidnfolder together with the supports 5 and 6 has holes or notches to allow oi' the passage of the needle. The supports 5 and should be adjustable to allow for varying thicknesses of goods.

In Fig. 6 the folder oand supports 5 and u are .represented in larger size. The folder o is attached to a swinging plate, l, that has the screws 7 7 for its i'ulcrum, and is moved up and down at' the proper time by the grooved face cani k on the end of the shaft c, and the folder c is to be attached adjust-ably to said plate 1.,'so that the ainount of depression or lt'old given to the fabric may be regulated by raising or lowering said folder o. Upon the plate l is a rib, S, that lifts the fabric ont from between the supports 5 and l as the plate L is raised. Ehe act of raising the plate l also ophorizontal movement given to it by a cam, m,

upon the baci; of the cam k, which acts upon `a. stud or roller, s, upon the under side ofthe arm s1, and this cam m acting when the plate l, arm s1, and points are raised causes the ina- -spring 10 .to`keep the fabric down terial to be fed along.

Ylig'..fZf-represents the plate Z and parts connected to the same, as detached from the 1nachine.' i 4 .I make use of the pressure-foot n, swinging upon the pivots 9, and acted upon by the upon thc feed, and. this pressurcfoot may be straight, as shown, or curved upward to be clear ofthe bed A; lAn adjustable gauge., p, is provided for the edge ofthe braid or strip of material being sewed, and this gauge may be forked .to set at both sides of the leider o, and may also be double to act as a.- gauge to the edge of the material to which the braid is being served:

-The race-way q for the shuttle. r is of any usual character. It runs across the bed a at right angles tothe needle-bar, and the shuttle-driver t that is actuated by the link 'u and crank-piu 1l is of a shape to act upon theshuttle, that isplaced in the said raceway with its flat side upward, to act below the needle and take a loop of needle-,thread as said shuttle crosses below said-needle,when the latter .pauses in 'isffjuence'othe shapei th'e'cain d. end of the needle i is received upon an'incline at 12, so as to be steadiedand kept up out of, the Way of theshuttle should said needle be come bent, or the end of the needle may pass into a tapering hole.

l'f desired the supports raised up, and the folder remain stationary if the other parts were arranged to act in harmcny therewith.

It will be evident that the body of the ma- I terial that is being sewed lies upon thebed a,

with the edge thereof extending slightly beyoud and nearly` in line with the needle, and stopped against a gauge, if desired, as aforesaid.

Thel braid or strip of material that is to be sewed is supplied, so as to pass beneath the edge ofthe previously-served material, the position s of the parts beingde'te-rmined by gauges,

and both thicknesses pass beneath the folder o, so-that the needle will pass through the two thicknesses, as illustrated in' Figs. 4- and 6, while\held down oy the folder o, and as the needle draws back a loop of needlethread remains in the hole, in consequence of the shut tle with' its threadthrough the loop of needle-thread. The raising of the folder o relieves the material, it is moved along', and then the folder o again crimps the material into the form for the needle to' pass through it a gain.

5 and 6 might be having previously passedl Braids can bc sewn in a circular form by commencing in the center and employing a'pin as a guide around which the material revolves as it is served, and this piu can enter und slide in a slot, as shown. at ld, Fig. l, as the circle increases in sie'.

In this sewin`o,'machine the stitch does not pass through the fabric at right angles, but

- diagonally, the points Wherethc needle enters and ei'nerges being further apart ou the under v side oi the material than t'heyare on the npg'aer surface contiguous to the folder o, as seen 1n Figs. Il and; hence this stitch is especially adapted to sewing straw goods, because .the stitch shows but little upon the upper or right side. of the goods, andthe stitch is very strong and elastic. f

'.lhe sewing mechanism acting beneath the support-ing surface the braid to be sewed laps below the edge of the previously-sewed por` tien, and hence in sewing the circular braid or coil before mentioned, the goods will be right side up upon the bed, and the center of the coil can be guided bv a pin in the slotk.

I cla-im as my invention- 1. The combinationof a reciprooatiug` per#- forating nee'dle 'with the folder o, constructed and operating substantially as described, and

shuttle r, or its equivalent, for the purposes and as set-forth. y

2. A feeding mechanism acting in the d irection of the needles length, in combination wi th Eat supporting the material, arreeipro Aeating folder, acting to depress the material below the bed, and a reciprocating perforatiug needle, substantially as specified.

3. Aperforatingneedle reciprocated beneath and in a plane parallel or nearly so to the hat bed on which the fabric is placed, in coinbination with the shuttle moved transve ely to the needle and beneath the bed, and the mechanisni that draws a crimp of the fabric down into the bed for the needle to pass through the same, substantially as set forth. y

4. The swinging plate l, carrying the folder o, in combination with the feeding pointsand mechanism, substantially as speciiied, for giving motion to the parte.

5. A guide or gauge, substantially as de scribed, for present-ing the braid to be sewed between the edge of the previously =sewed braid and the bed, in combination with sewing mechanism, substantially as speciliedact' in g below the bed sewing braid with a short stitch upon the surface, and the principal portion of the thread on the under side, as sct forth.

Signed by ine this 25th day of July, A. D. 1871.

HIRAM PLMMER.

Witnesses: i i

(liras. ELS-MHH, HARO-LD SERRELL.

or supporting surface, for

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