US228985A

US228985A - curtis

Info

Publication number: US228985A
Authority: US
Publication date: 1880-06-22
Anticipated expiration: 1897-06-22

Description

' 381188115-31166132. G, H. W. CURTIS. S OverSea'mi-ng Attachment for S8WiI1gMcLGhiIl GS" No. 228,985. v Patented June 22,1880.

S. O I

WITNESSES:

q 5M yfp mmf ATTORNEY Q 3Sheets-Sheet 3. G. H. W. CURTIS. Overseaming Attachment for Sewing Machines. No. 228,985. Patented June 22,1886.

NJEI'ERS, PNOTo-LITHOGRAFHER. WASHINGTON. D. C,

'NITED STATES PATENT Fries.

GEORGE H. W. CURTIS, OF BROOKLYN, N. Y., ASSIGNOR TO WVHEELER & WILSON MANUFAOTURINGOOMPANY, OF BRIDGEPORT, CONN.

OVERSEAMING ATTACHMENT FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 228,985, dated June 22, 1880,

Application filed December 27, 1879.

To all whom it may concern Be it known that I, GEORGE H. W. GUR- T18, of Brooklyn, county of Kings, State of New York, have invented a new and useful Improvement in Overseaming Attachments for Sewing-Machines, which is fully set forth in the following specification and accompanying drawings, in which- Figure 1 is a top view of a sewing-machine plate with my improvements attached; Fig. 2, a view of the under side of the same; Fig. 3, a longitudinal section of the bed of the machine with my improvements, partly in section and partly in elevation; Fig. 4, a plan of certain parts of my improvements; Fig. 5, a side view of the presser-bar and presser-foot; Fig. 6, a front View of the same; Fig. 7, a front view of the presser-foot detached.

My invention relates to devices for overseaming and button-hole stitching applied to sewing-machines; and it consists more particularly in mechanism for imparting a laterally-reciprocating movement to the feed-dog, in addition to its upward and downward and forward and back movements, whereby lateral movements are imparted to the fabric to orm zigzag stitches for button-hole or overthe pin thereon: H, the switch; I, the slotted switch-plate; J, the stitch-regulator; M, the switch-spring; L, a recess in which it is located; N, the driving switch -pin O, the swinging presser-foot P P, the points of the gage; B, the variablernotion disk; S, the switch-pin T, the stitch-regulator pin; K, its slot.

Plate A is cut away to admit the insertion, with sufficient lateral motion, of the various pieces employed. Throat-plate D is pivoted at its rear end at a sufficient distance from the needle to have an easy swinging motion. Sliding bar G is pivoted to the front end of throat-plate D, and connected with slotted switch-plate I by pin a. Switch-spring M, secured at one end to plate A, is attached to a pin, S, projecting from the switch through its plate. Slotted switchplate I is secured to the under side of plate A by a screw near its center. Switch H is curved to conform to the shape of variable-motion disk R, and driven by pin N, inserted therein. is pivoted to the end of a block projecting from feed-bar E, its serrated feeding-surfaces projecting upward through the swinging throatplat-e between points P P on guide 0. Switchregulator J is secured bya screw beneath plate A, having a disk at its end, on the outer circle of which is a pin, T, coming up through the slot of sliding bar G.

The operation is as follows: Before the needle descends pin N, on variable-motion disk It, strikes the right side of switch H, pushing switchplatc I over to the left, which forces sliding bar G to the right. The needle now descends on the left side of the fabric, and a stitch is taken. As the needle ascends pin N strikes the left side of switch H, pushing switch-plate I over to the right, which forces sliding bar G to the left, ready for the needle to next descend on the right side of the fabric, thus laying an overseaming-stitch thereon.

The length of the lateral throw of the throat-plate and feed is determined by the position of the pin T, near the end of stitchregulator J, which pin projects through sliding bar G. By moving said pin nearer to or farther from the end of the slotted switchplate I the swinging throat-plate at the other end of sliding bar G will be caused to vibrate more or less, as is desired.

The fabric is fed and the stitches spaced in the usual manner, the feed and presser-foot merely swinging with the throat-plate, as de scribed, the presser-foot being. hung loosely in the slot of the presser-bar to admit of such swinging.

When the presser-foot is down it rests be tween the points P P of guide 0, secured to and moving laterally with throat plate D, which swings the presser-foot.

Spring M, in connection with the pin from switch H, to which it is attached, throws the Swinging feed F 2 assess switch off its center, after driving-pin N has switch-plate I,switch H, disk R, provided with 10 passed the head of the switch, into position pin N, and spring M, operating together, subfor pin N to next pass it on the opposite side. sta-ntially as and for the purpose described.

What I claim, and desire to secure by Leti 5 ters Patent, is-- In combination with the driving-shaft, feedbar, and presser bar of a sewing-machine, Witnesses: swinging throat-plate D, swinging feed F, JOHN W. RIPLEY, swinging presser-foot T, sliding bar G, slotted EUGENE N. ELIOT.

GEORGE H. W. CURTIS.