US377466A - Wax-thread sewing-machine - Google Patents

Description

(No Model.) n

A. s. RICHARDSON.

` WAX THREAD SEWING MAGHINH. No. 377,466. Patented Feb. '7, 1888.

'I I; l I l l ma I u F'||3 5 n I s mi* A l `e l UNITEDk STATES PATENT Ormes.

ARTHUR s. RICHARDSON, or READING,MASSACHUSETTS.

`WAX-'TH READ SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No.Y 377,466, dated February 7, 1888.v

Application filed March22, 1887. Serial No. 231,901. (No model.)

To aZZ whom it may concern,.-

Be it known that I, ARTHUR S. RICHARD sON,of Reading,county of Middlesex,and State of Massachusetts, have invented an Improvement in Wax-Thread Sewing-Machines, of4

which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

United States Patent No. 314,478, granted to me March 24, 1885,1 shows and describes a l wax-thread sewing-machine having a standard of small diameter 'and -flat/tened at its upper end to constitute a narrow support for the material between the edge of the sole and the point where the needle penetrates the sole, so

as to be sure to catch the edge of the upper lasted over upon the inner sole.

It is a great desideratum to reduce the diameter of the standard as much as possible throughout its entire length, especially all that part of the standard that enters the shoe, so

the needle-bar with a longitudinal groove yin which runs or moves the casto slide composed of a flattened strip of steel, the point ,of which is offset to come in contact with the shank of theneedle at a point immediately above the needle-bar, the cast-oii slide being held closely in the groove in the needle-bar by means of the inner wall of the standard, the needle-bar and cast-off within it fitting vthe standard, the latter guiding each along its entire stroke.

To enable the top of the standard to consti tute a narrow work-support, the said standard is made open entirelyto its' top, such construction being necessary to enable both the cast-oft' and the needle to be retracted entirely within the standard when the awl is moving the shoe along the top of the support for anew stitch, the point of the awlat such time being ywax-thread sewing-machines wherein terial isfed by an awl.

The forward part of the yframework of the extended through the usual outer sole, upper, and inner sole close to the edge of the inner sole and separated from the said edge byonly `the thickness of, one wall of the upper end of the standard. The standard,at apoint below` its upper end, is slotted for the passage of the screwwhich holds the needle in the needle- `l bar and to permit'the operator to have access` to the said screw to change a needle lwithout removing the needle-bar.

Figure 1, in front elevation,- represents a suf# cient portion of a wax-th read sewing-machine to enable my improvements to be understood. Fig. 2 is a detail showing, in verticalseetion,

the standard, part of the frame-work, the neef dle-bar,and the cast-oft', the needle being in elevation', the needlebar being supposed to be descending. Fig. 3' is a section of Fig. 2- in the line x. Fig. 4 is a top or plan viewof the Fig. l in the line rv'.

YThe bed-piane or fbase A, the standrdA, i

B3 upon al stud at the forwardpart of the overx hanging arm, the arm B4, forming lpartV of a rock-shaft and connected to the said frame B'l by a link, 2, the presser-foot C, the presserbar C', the thread-carrier bar C2, and/thek thread-carrier 3 are and may be all as usual in the mamachine has securedtoV itv'bybolts d a plate,

,d, or foot,`from which risesfa slender stand-v ard, d, the upper end of which v meets the lower side of the presser-foot. This standard, as herein shown, is made tubular from its upper end downward to a point which will be 'at or below what will constitute the topof'the shoe, so as to offer the least possible obstruc tion to the l, free movement of the upper outside of the standard while the stitchingis takingplace about the toe of the shoe, the

standard at such time extendinginto the vamp substantially to its junction with the inner,V sole. A

Referring to Fig. 4, it will be "seen that the top of the standard, especiallythat partof it l l7o standard, Fig. 2; and Fig. 5 isv ajsectiou of roo" between the vamp and the needle, is very narrow or thin, such construction permitting the hooked needle a to penetrate the inner sole, upper, and outer sole very close to the edge of the inner sole, such construction being essential in the manufacture of childrens or infV iants shoes, in order that the upperfmay be always caught by the needle.

The needle-bar D at its lower end has connected to it by a screw a block, D', having a projecting finger which at the proper time strikes the blocks d2 or d, secured to the eastoi` bar e, to raise or lower it in order that the Cast-off may cooperate in usual manner with the hook ofthe hooked needle a to form a stitch. rIhis block D has a pin or stud which receives the lower end of a link, D2, (shown by dotted lines, Fig. 1,) the upper end oi which link is connected to a pin or stud of an arm of a rock-shaft, D", which derives its movement from the rotating shaft in the over- `hanging arm referred to through a link (shown by dotted lines) connected to an arm7 D4, (shown by dotted lines, Fig. 1,) of the roekshaft D3, the said devices for moving the needle and east-oii` bars being substantially the same as now employed in other waxthread sewing-machines.

The needle-bar D is fitted snugly into and is guided by the standard, as herein shown, to a point above the highest position' attained by the needle-bar, the said standard being slotted, as represented at f, Fig. 2, the said slot permitting the needle-holding screw f to slide up and down the slide, also enabling the operator to gain access to the said screw when it is desired for any purpose to change or ad just the needle, the slot obviating the removal of the needle-bar.

The needle-bar throughout the length of the standard is provided with a groove, as shown best in Figs. 2 and 3,which receives in it the east-off g, herein shown as a thin plate of steel, the upper end of which is offset (see Fig. 2) or v bent toward and so as to come in Contact with the needle a, the inturned portion of the eastoif in contact with the needle being grooved to partially embrace the needle.

The east-off from the point Sto its upper end substantially fills the groove in the needle-bar, the outer edge of the cast-off coming in contact with the inner wall of the standard, so Vthat the cast-off in its reciproeations is held rmly in place in the groove in the needlebar.

Referring to Fig. 2, it will be noticed that the standard is open entirely to its top, the hole at the top being of such size as to permit both the cast-off and the needle to be entirely retracted within and below the upper end of the standard, so that the inner sole of a shoe resting upon the top of the standard may be readily moved thereon by the awl, the point of which at such time enters the open upper end of the standard.

The standard is herein shown astnbular, as thereby greatest strength and stiffness are attained wit-h a given quantity of metal, the upper end of the standard, however, presenting an oval rather than circular shape, leaving a comparatively narrow slot in the top of the standard in which the awl may movelaterally.

I do not broadly ciaim a'base or standard to enter a shoe and support imt while being stitched.

I claim l. In a waxthread sewingmachine, the slender standard di, open at its upper end, the needle and cast-off bars fitting closely within the said standard,the cast-0H entering a groove in the needle-bar, the back of the said cast-olf being in contact with the inner wall of the standard to retain the former in the groove ol' the said bar and both the needle and cast-otf being adapted to be retracted entirely within the standard, combined with a presser-foot, an awl, an awl-carrying bar, and means to move the awl-carryin g bar to elfeet the rnovement of the shoe over the top of the standard, substantially as described.

2. The slender work-supporting standard dslotted at one side, as atf, alongitudinallygrooved needle-carrying bar, and a cast-citentering the said groove, the assembled lneedle and castof bars tittin g theinterior of the stand` ard snugly, combined with a needle-holding screw, f, arranged to move in the slot of ,the standard, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ARTHUR S. RICHARDSON.

n Vitnesses:

BERNICE J. NoYns, F. L. EMERY.

IOO

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