USRE3402E - Improvement in hemming and cording umbrella-covers - Google Patents

Description

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Letters .Patent N o. 10,386, dated Januar-y 3, 1854; dntedatcd July 3, 1853; extended seven yewrs yN..\Tul.1\i11ln.WHEELER, or Beine-EPORT, ooNNECTIcUrAssIGNEE OF SHERBURNE C. BLODGETT.

reissue No.

3,402, zaad Apt-a 27, 186e v IMPROVEMENT IN HEMMIN G- AND CORDINGYUMBRELLA-COVERS. 4

The Schedule referred to in these Letter: Patent and making part 0f U10 lam To all whom it may concern:

Be it known that SHERBUBNE C. BLoDGnTT, `of

Philadelphia, Pennsylvania, did inventa new and use"- fnl Apparatus for Hemming, or Oording and Hemming; and that the following, taken in connection with the drawings, is a full, clear, and exact description thereof.

In the drawings- Figure 1 is a perspective view of the apparatus with its bottom plate attached.

Figure 2 is a plan or top view of the same.

Figure 3, a bottom View with the bottom plate removed.

Figures 4 and 5 are represent-ations of n'gs. 2 and 3 on an enlarged scale.

rlhe same letters refer to the same parts in all the figures.

a is the bottom plate, on-whoseupper surface the.

material to be acted upon rests.

l), the piece of metal or shoe in which the slot and shelf that turn the hem, and the hole that guides the cord are formed.

c, the vertical clothv V d, the shelf over which the cloth is turned.

c, the hole that guides the cord, the direction of it being indicated by dotted lines.

f, the hole forl the passage ofthe needle when the instrument is used 'in connection with a sewing-ma chine.

g, groove for the passage of the hem with a cord encased.

h, the cord. V

i, the hole for screwing the instrument to a stand, when sewing by hand.

The shoe, when in use, is to be firmly secured to the bottom plate, and is provided with a perpendicular hole, for the passage of the needle when used with a sewing-machine.

The bottom of the shoe is also cut away from that side nearest the operator, up to the line x'x, fig. 5 (see also, in this connection, iig. 1,) and the cloth, the edge of which is being hcnuned, lies in the channel thus formed between the shoe and the bottom plate.

At the left-hand end of the shoe there is a perpendicular slot, or slit cut in it, sutticently wide to admit the cloth, and extending through the-top ofthe shoe, halfway to the needle. This slot is closed at about that point, and then curves entirely round the righthand end of a shelf, hereafter described, where it passes down to the under side of the shoe, iin a sufri- `ciently spiral form, and is thence continued to the right-hand end of the shoe in a straight line, in the ibrm of a groove, covered at the top, nearly surrounding the hem when formed.

part of the slot for the passage ofthe completed hem, orv

The shelf d is so called, from its form. It is a part of the shoe, dbes not reach up to the top ofthe shoe, and does not reach the bottom plate, and extends in the direction of the feed of the cloth, (see arrows,) to

about the point where the side of the slot changes` from the perpendicular to the horizontal.

Thisshlf supports the inner or concave side of the hem being turned, and as the vertical side of the slot gradually changes to horizontal, the cloth. turned up at the edge by the hand ofthe operator, and drawn along by the feed-wheel ofthe machine, is turned over by the peculiar shape of the spiral, acting on its convex side until the cloth is doubled down on itself, and held so doubled by being pressed upon and partially enclosed by the groove, which has a horizontal top, as at g y, the cord being at the same time passed through the hole, and enclosed in the hem. (See red line.)

f he slot, as a whole, is, therefore, first, a perpen dicular slot; second, a spiral bridge; and third, a horizontal groove coveredat top, and the spiral bridge is that part of the slot where its side curves from the vertical to the horizontal. n

The inside of the slot that acts against the convex side of the cloth, is therefore a warped surface, gradually changing from a vertical to a horizontal one, and the cloth upon which the hem or corded edge is formed enters the passage bounded on one side by this surface, through the channel before described, between the bot` tom of the shoe and the top of the bottom plate, and this warped surface, used in connection with the feed of a sewing-machine, by their joint action, turns the cloth ninety degrees, the finger of the operator maliing the preliminary-turn, with which the former completes the hem.

In the use of the apparatus, the cord is passed through the guide or hole. The cloth lies horizontally in the vchannel between the shoev and bottom plate, with the edge from the operator, and feeds from left to right, as shown by the arrows. The cloth being held by the left hand of the operator, turns up with the thumb what is sufficient for a hem, and enters it in the slot. As the cloth is carried forward by the feed-wheel of the machine, or by hand, it is turned over by the spiral bridge, and wrapped around the cord, carrying the cord along with it, and passes into the part of the slot that has a horizontal top, which presses the hem into shape, and presents it in proper relation to the needle, and preserves it iu shape while being sewn, and for a short distance after the seam is formed.

I claim as the invention of SHERBURNE O.

ETT-

l.v A warped surface, substantially such as described, to be used in a sewing-machine, for tusning hems, substantially as described.

2. VIn combination with the-feed of a sewing-machine, a. warped surface, substantially such as described, act ing upon the convex side ofthe cloth, the combination being substantially such as described.

3. A warped surface, in shape subitantially such as is described, in combination with a shelf, the two acting in combination, substantially as set forth.

4. In combination with a spiral bridge, acting on the convex side of the cloth, ahorizontal groove, covered on the top, and extending to the needle, completing the hem, and holding it in shape to be stitched,

the spiral and groove being substantially such as de- 7. In combination with a slot, and spiral bridgeand a shelf, allu being and acting substantially as described, a cord-guide and groove, covered at top, the whole forming a cording-apparatus.

8. Inlcombination with a warped surface, substantially such as described, and capable of acting on the convex side of the material, a channel, in which the horizontal part ofthe cloth Whose edge is being hemmed may lie, and through which it passes, as described.

9. A needle-hole, or aperture for the passage of a needle, in combination with a groove, covered at top, and so shaped, substantially as described, as to par tially surround a hem, whereby the line of stitching may be suitably placed in relation to a hem partially enclosed in the groove, the combination being as described.

10. A warped surface, substantially such as described, in combination with a shelf and a channel, which the cloth being hemmed may traverse, the combination being substantially such as hereinbefore set forth.

fitnessesz` NATHANIEL WHEELER.

Gno. H. COLLINS. S. J. GORDON.

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