US1155318A - Work-support for sewing-machines. - Google Patents

Description

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Specicationv of Letters Patent.

n entrino-Maritimes'.

Patenten sept. es, asia.

To all whom t may 'concern Be itvhnown that l, FRANK W. Mannion,.-

1 citizen of the United States, residing at oston, in the county of Suifolln'USt'ate of liriaesachusetts,l1ave'inve1n;ed a certain new and useful improvement in Vork-Sup-ports for Sewing-lvlachines, of which the `following is a specification, reference being had therein to the acconuianyingv drawings.

The invention'is an improvement 'in worksupports or Work-rests of the character employed in sewing machines used for stitching the soles of boots and shoes, and for harness and saddle-ri7 Work. It is appli cable also to other machines. Y

The main object of `the invention is to avoid distortion ofthe marginal portion of the sole of a shoe, or of other Work, resulting from the bending or breaking down of such portion over' the front .edge of the Work-support when the Work is heldin an vinclined position while being operated upon,

asfrequently is necessary' in practice.

A. further object is to avoid the marking and creasing of the surface of the Work which results from giving ,the Work anv in- Aclined position over the front edge of a stationary and rigid support or rest While being operated upon. The marks and .creases thereby occasioned require to be removed bybuiiing or other operations, and frequently considerable labor and time are expended in effecting the removahwith increase in Vthe cost of manufacture.

The invention consists in a Work-support or Work-rest which rocks or tilts upon an axis parallel to the 4line of feed so as to accommodate itself to the angle or inclination of the surface of the Work `contacting therewith, asthe Work'is tilted or inclined more or less.

An important feature of the invention in its preferredembodiment is the location of the pivotal axis of the work-support or Work-rest in or substantially in theplane of the surface thereof with which the Work cornes into contact. another i" the location of such axis in line with thev stitch-forming point in a. sewing machine in which the inventi'on `is employed. f

qAn embodiment of the invention is illusitrated, in the drawings, in which .latten- Figure 1 shows in front elevation certain. parte of ,a cui-ved needle sewing machine' having the said embodiment combined there;

with. Fig. 2 showsl the parts o'f Fig. 1 in side elevatiomvan'd in addition shows a portion` of a shoe,'w1'th' the Work-support or `work-'rest tilted or' inclined. Fig. 3l is a detail 'View of the Work-support' or Workrest vof Figs. 4andy 2, showing it detached and in sect-ion'in a vertical plane .passing through the pivots. Fig. 4f is a vien/,of the said work-support or Work-rest in vertical section in a plane at right angles to that of the section of Fig. 3. Figo showsy the ,application of a' spring in'connection with the Worth-support or Work-rest'.

'Having reference to the drawings The curved awl l, swinging aWl-carrier 2, curved needle 3, swinging needle-carrier at, presser l2, swinging presser-carrier 13, and the portion 5 of the machine framework supporting said awl-carrier, needle-carrier, and pressercarrier, together with the mechanism for operatingthe parts for stitch-forming purposes, and for effecting the feedingof the Work, are or may be of any approved charaeter and construction. While I have shown in Figs. 1, 3 and t is, horizontal, into a. posi' tion inclined to the horizontal asin Fig. 2,

the' degree ofinclination Varying according to the extent to which the shoe being stitched is caused to incl-ine by' the operator. The

pivots 7, 7, are' constituted hy the conical a' curved needle .and a curved aWl, and ap- S@ points of the bent ends of stems 7, 7a. Thel y said stems' occupy holes in a stand or carrier S' which is mounted"v upon' one upright ofthe portionv of the machine frame-Work. .The pivots 7a, 7a, are' located Aat right and left, respectively, ofthe stitch-making' point, and at opposite ends lof the throat 6a, Fig, 3, in the Work-rest, said throat being o f-a length suitable' to accommodate the maximum length of feed-movement -of the' aWl, needle, or other feeding implement.v

in order that the pivots l 7, l@may he lo-A cated' praoticaily in the plane of the surface of the Worl -rest With which the Work makes contact, as in Fig. 2, conical cavities 6b, 6", Figs. 3 and 4, are formed in the under side of' the Work-rest and extend through the thickness of the Workerest' nearly to the said surface. Consequently, the Worlr-rest rocks upon a pivotal axis practically in the plane of the work-,contacting surface of the Workrest, so that the rocking movement of the Work While in contact With lthe Work-rest en? A tails practically no displacement of the under surface of the Work with reference to the said pivotal axis. Thereforevthe required line of stitching may be produced around the margin of the sole-without 'deviation due to varying the inclination of the shoe.

To'secure accuracy 1n the location of the 4stand 8 in applying the same to the machineframe 5, the said stand is formed at oneside thereof with a square rib S, and the portion 5a of the machine frame to which the stand l Sis applied is formedwith a groove into Willich the said rib'its as in Fig.` l. Thev stand is secured in place by meansof a bolt 9, and in order to permit adjustment of the standinthedirectionfrom front to lrea-r the hole 5b which is formed in the frame Sato.

receiveV the stem of the said bolt is made as a slot elongated in such direction This slot provides for locating thestand in the proper position. To provide for a similar adjustment of the Work-rest uponl the stand, the stems 7a, 7, are capable of adjustment lenvthwise in the direction from front to rear Within the holes which they occupy in i the stand 8. The said stems are held in adi tened portions of the stems,

justed position by `clampscre\vs 10, 10, occu- A pying threaded holes tapped in the stand, land bindingby their inner ends against `flat- Such flattened portions are of a length sufficient to permit the required extent of lenthwise adjustment of the stems relative to the stand in locating .the Work-rest properly in relation to the field of Aaction of the aWl and needle. The portion of the work-rest at the rear of the pivots is heavier than the front portion, so that the said 'rear portion gravitates normally to a seat or shelf 8b upon the stand S. A spring may be employed to aid gravity as vat Mein Fig. 5, or a spring alone may be utilized.L j

I claim as my invention .1. The combination with a support, of a Work-rest pivotall'y mounted thereon, with its pivotal axis parallel with the direction of 3.'.The combination with a support, of a Work-rest pivotallymounted thereon with its pivotal axis locatedsubstantially in the Work-contacting sui-,face thereof, extending e parallel with the direction of feed and pass'- ing through the stitching point.

4Intestimony whereof I aflix my signature in presence of two Witnesses. Y

a 'FRANK lV. MERRICK.

Witnesses:

NATHAN B. DAY, CHAs. F. RANDALL.

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