US291100A - Geoege simpson - Google Patents

Description

(Numdam 4 l G. SIMPSON.

`WIEIIPIING GUIDE EUR SEWING MACHINES. lvm-2914.100. Patented Jan. 1, 1884.

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"miran 'STATES GEORGE SIMPSON, OE MOEAVIA, NEWYOEK, ASSIGNOE OE ONE-HALE To f STEPHEN .M rrrrus, OE SAME PLAGE.

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SPECIFICATION forming part of Letters'Patent No. 291,100, dated January 1, 1884.

'Application filed J'une 14, 1883. (No model.)Y

T0 a/ZZ whom it may concern..-

- Be it known that l, GEORGE SIMPSON, a citizen of the United States of America, residing at Moravia, in the county of Cayuga and State of New York, Vhave invented certain new and useful Improvements in Vhipping-Guides for `Sewing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to that class of sewing-machine guides more particularly adapted to sew or whip 7 thelinings to bootand shoe uppers; and theinvention consists in the peculiar construction, arrangement, and combination of parts, hereinafter more particularly described and claimed.

In the accompanying drawings, Figure 1 shows an end elevation ofthe foot of a sewing- Inachine provided 4with my improvement, and showing the material in position to be whipped Fig. 2, an invertedplan ofthe foot; Fig. 3,aside elevation; Fig. 4,asection through the line 2 2, Fig. 2; and Fig. 5 is asimilar section, showing a modication.

All of the above views are much enlarged,the better to show the details of construction.

Arepresents afoot of asewing-machine, provided with any convenient mode of attachment to the pressure-bar, havinga rib, B, formed on the under side, to the side of which rib is secured, in any convenient manner, the springguide C. Y Through the rib a tapering or wedgeshaped pin, D, is passed, the inclined side of which bears against one end ofa'plug,E,whose opposite end bears against the side of the' spring-guide C. To the upper part ofthe foot is fastened a spring, F,whose lower end forces down the pin D. This spring, it is obvious, may be Of any convenient form, and be connected to the pin in any suitable manner; but I show it as bearing upon the top of apin, G, which is passed through the top of pin D.

The operation is as follows; The material to be lined-such as the upper of a shoe, a-is doubled along the line to which the lining is to be attached, theV lining b is placed in its proper position, and the two placed under the foot, as shown in Fig. 1. Themachine is then put in operation, and as theupper is fedthrough the machine the needle H pierces the leather, as shown, whereby the lining is sewed to the upper in a manner which is well understood, and it is therefore unnecessary to describe it.

If the uppers were of exactly uniform substance, there would be no necessity for any adjustment 5 5 of the guide after it was first adjusted to the material it is designed to sew; but, owing to the various thickness and exibility of such mate ria1 ,it is necessary that there should be an automatic adjustment for the majority of the work. 6o The automatic adjustment in the form here shown is caused by the tapering pin D, the operation of which is as follows: The pin D, it will be perceived, rests on the .cloth-plate I of the machine, and as the foot rises and falls with the varying thicknesses of the material, more or -less of the pin passes into the hole in the foot, and the farther the pin D passesinto the foot the farther the guide C is pushed away from the rib B; hence the thinner the material 7o and the more the foot descends the farther the guide Gis pushed away from the rib Band the nearer the outside of thefolded edge of theupper the needle passes through. From this it will be seen that a perfect automatic adj ustment of the guide is obtained without any lateral movement of the foot itself, which is a great advantage, for if the adjustment requires any other than a vertical movement of the foot and the presser-bar a peculiar arrangement ofthe 8o presser-bar is necessary; and hence in most machines the arrangement of the presser-bar would have to be entirely changed, whereas with my improvement all that is necessary to do in most machines is to remove the foot and replace itwith another one having my improvement attached. As a means of assisting the guiding' of the material, I prefer to form another rib, J, on the bottom of the presser-foot,

so as to leave a hollow for then fold of the ma- 9o terial to rest in, but do not limit myself to the use of this, nor to the exact construction of any of the parts shown or described, as Iam aware that they may be varied without departing es-l sentially from the spirit of my invention.

I sometimes dispense with the automatic ad'- justment shown and described above by inserting a screw, as shown in- Fig. 2, by which the position of the guide can be adjusted by hand. This device will be found useful wherealarge roo number of uppers have to be whipped which are of substantially uniform thickness; but

Where the materials vary in thickness, as they mostly do, the automatic adjustment will be found much preferable.

It is obvious that the plug E may be dispensed with by forming a projection on the Side of the sp1ingguide against which the pin D will act, as shown in Fig. 5.

That I claim as new isl. The eombinationgvith the presser-foot of a sewing1naehine,of a whipping-guide and means whereby said guide is adapted to be automatieally adjusted laterally under theplesser-foot as the latter rises or falls, substantially as described.

2. The combination, with the presser-foot and bed-plate of ay sewingqnaehine and the

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