US1300449A - Overseaming-machine. - Google Patents

Description

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L R. MOFFATT.

OVERSEAMING MACHINE.

APPLlc'ATloN FILED MAR. 3o. 191e.

1,300,449. Patented Apr. 15,1919.

2 SHEETS-SHEET 2:

-1 En s'larns PA loFrnoE.

JAMES R. MOFFATT, 0F CHICAOO, ILLINOIS, ASSIGNOR TO UNION -SPECIAL MACHINE n COMPANY, 0F CHICAGO,- ILLINOIS, A. CORPORATION OF ILLINOIS.

ovEnsmINe-MCHINE.

Specification of Letters Patent.

Patented Apr. 15, 1919.

original application nea october as, 191s, serial No. 797,778. myidea and this application nlea much so,

191s. serial No. 87,802. Y

To all whom 'it may concern.'

Be it known that I, JAMES R.. MoFFATr, a citizen of the United States, residing at Ghicago, in the county of Cook, State of Illinois, have invented certain new and useful sion of my co-pending application, Serial4 No. 797,778,1iled October 28, 1913.

ln this type of machine, the needle is caused to enter the fabric in substantially a horizontal plane,V and alooperenters the needle loop on one side of the fabric and is then raised and carried over the ed e of the fabric to the other sidethereof w ere the looper thread loo is postioned for the entrance of the needle on 'its next stroke;

An object of the invention is to provide means for supportin the-needle bar in a machine of the above ype so that it may be positively reciprocated with little or no lateral vibration.

ln'the drawings, which show by way of illustration one embodiment of the invention Figure 1 is a vertical sectional viev7 showin a machine having my improvements applied thereto;v l

Fig. 2 is a vertical sectional view, showing the needle bar with means for supporting and operating the same;

Fig. 3 is a detail, showing in side elevation the supporting lug for the rear end of the needle bar. i

l have shown my invention applied to a machine consisting of a main frame or supporting casing l on which is mounted a fixed bracket 2, supporting a shaft 3 carrying a feed wheel 4. Also mounted on the frame is a movable bracket 5 carrying a shaft 6 supporting a feed wheel 7 The feed wheels 4: and 7 are so positioned as to engage the fabric to be stitched and support and feed the Same in a vertical plane. The shaft is intermittently driven by suitable operating mechanism, and thisshaft, through the gear 8 meshing with the gear 9, drives the shaft 6.

Mounted to reciprocate in bearings lOYand 11 1s a needle bar 12 which is provided with a head 13 supporting a needle 14.- On the needlel bar is a collar l'wllich isclamped thereto by suitable screws 16. The collar 15 has a depending lu to which is pivoted a link yThe link -1 is also pivoted to the upper end of a lever 18vwhich is pivotally supported on a shafts19 mounted. in the frame or casin ends is. rovide ywith a ball stud 20 which is engage by an eccentric strap 21, and this eccentric strap in turn-coperates with an eccentric 22 on the. main shaft 23. As the shaft rotates, the needle bar will be. reciprocated back and'forth in a substantially horizontal path. in the bearings 10 and 11. The bearing 11 is in the form of a sleeve tting a suitable opening in the front wall of the 1. Said dever between its' frame 4or casing 12 and said sleeve projects Y -end of the needle bar and a relatively long projecting bearing sleeve for the front portion of the `needle bar and between these bearings the needle bar is .provided with its operating devices. These bearings for the needle bar. form a very eiicient support and prevent the needle bar from lateral vibration, while the operating mechanismconsisting of a positive train of connections between the needle bar and the eccentric positively moves the needle back and forth.

Cooperating with the needle is a looper 27 carried by a looper bar 28 which is operated so as to cause the looper to enter the needle loop on one side of the fabric, then rise over the edge of the fabric to the other side thereof where the looper thread loop is positioned for the entrance of the needle on its next stroke. rlhis movement of the looper puts more or less lateral strain on the needle and needle bar but the supporting bearings above described for the needle bar holds said needle bar so that it reciprocates with littleI or no lateral vibration.

The distancevbetween the bearin 10 and 11 is only slightly greater than the throw of the needle bar,'and this further prevents un- *u of parts may be made without departing from the spirit ofthe invention as set forth in the appended claim.

Havin what is c aimeda's new is `A sewing machine includingl in combination, a caslng,v devices vfor suportingand feeding a fabric in substantia ly a vertical plane, a needle, a horizontally reciprocating Ineem-.14:9

thus described the invention,

needle bar, a needle head carried by said needl`e bar and supportingthe needle, a bearing in said casing adj acent the needle-head, a laterally projecting lug carriedby one of the side walls of said casing, said lug having a bearing Sleeve for thedinner end of said needle bar,and means connected to said needle bar between its supporting bearings for reciprocating the same, said 'bearing sleeve carried by the casing some distance from the inner wall of said casing so that the distance between the supporting bearings .for the needle bar is only, .I substantiallythe stroke of the needle bar.

In testimony whereof, I affix my signature in the presence'of two witnesses. y l

- JAMES R. MOFFATT.

I Witnesses: I

` S. GEORGE TATE, Q

A. F. BREDSHAH..

being extendedinwardly v

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