US1016462A - Presser-foot for sewing-machines. - Google Patents

Description

J. P. WEIS. PRBSSEB. FOOT FOR SEWING MACHINES.

APPLICATION FILED JUNE 7.1909. I

Patented Feb. 6, 1912 2 SHEETS-SHEET 1.

1 6 l 6 3 4 J 2 ll III I 1 3 60 ll. A k l 5 7 7..

J. P. WEIS. v PRESSBR FOOT FOR SEWING MACHINES.

APPLICATION FILED JUNE 7. 1909.

Patented Feb. 6, 1912 2 SHEETSESEBET 2 I I RI.

Fipecificatitm oi hatter-s retest,

.emilicatien 1115a Home '2, race. serial 1%. 506,654.

rammed iree e,

sewing rnacl'iines and particularly to feet of a type capableof yielding to varying thickne. s of work passing thereunder.

Among the objects of my invention may he noted the following: to provide a presserfoot capable of yieldino" universally to rial"- nesses of WOFl-l passing thereunder and a; ing thicleiesses off Work passing under fore/ntparts thereoi'ggto provide a, ,pre foot by nieans or which a uniform pres canhe maintained upon the work 110i]? standing varying thicknesses 'Wi'iich n' y be posing thereunder, or under differ-cam parts thereof; to provide a resserr rt by means of which a proper and substantial control oi": the Work can n'iaintained in inacl'rincs ernploying two or more needles 2 nd respective of the gage oi the machine", and to provide apresser-foot by which, in single or plural needle macl'iincs, perfect control of the Work can he .i'naintained and compensation had for varying thicknesses operated upon by the feeding mechanism.

With the above objects in View, and others which will. be detailed during the course of this description, my invention consists in the parts, features, elen: nits, and combinations of elements as hereinafter claimed In the drawings forming part of this description: Figure 1. is a side elevation of my Presser-foot, showing in dotted lines or P951 tion which one or both of the :l oot-parts may assume; Fig. 2 is a section on the line 2-2 of Fig. 1; Fig. 3 is front elevation of the presser-foot showing the same in mic posi' tieii; l a front elevation of the resser-foot showing the "$1119 in another position; Fig. e cop-plan View; lli 6 is a bottom-plan vii a of the shank; 4' ai ron elemtion. of the resser-toot, the Work plate and a portion of the feeding; media: nisin oi? a widegajage sewing machine, parts of the needleheing z 1 shown in iir a sition; Fig. is a-fi'ent elevation. o -s ha r and dogs showing, in lotted ii 92, ticns to which said dogs may he adj i Fig, 9 a, side elevation of IE .hcd and the feed-actuating mechanism having been added by dotted and full line representa-- tion; and Fig. 10 is a sectional detail and partial. transparency illustrating the mode of securing and adjusting the teed-dogs the feedbar Referring to the drawings, the nuirieral It. indicates the soclrehportion of the resser- :tootinto "which the lower end of the presserbar is set and held by means of an adjustingthe base or the socket-portion an aperture is bored transversely for the reception of a screw 2, the major portion of theshanlrof V'Jl'llcll is smooth, but the outer end of which is screwdsi'ireaded as shown by dotted-line representation 3 in several of the figures, The screw 2 is the journal for a Presser-foot "which, in this instance, of my inventiom-is shown as duplex in character; theft is to say, incl'oc'iing two independent resser-feet supported and operating independently, The shank l: of the foot is transversely hored at f and a portion of the here, screw-threaded at 6 for cooperation i yith. the screw-threaded forward end of the! screw 2, on which. said sleek is journaled and on which it rocks or oscillates relatively to the sociret portion. At its rear, the shank a is provided with the recess 7', the opposite walls oi which are inclined, as indicated by the dotted lines '8, so that the rocking movement of said shank will be permitted but limited in opposite dispective sides of the socket-portion. 1

At its opposite ends, the shank 4-. is provided with the depending legs 9, which, as more olearly shown in Figs. 2 and. 6, are each a transversely and vertically grooved at 10, the opposite side Walls of said groove being connected a Web 11 and the top Wall of which groove is convened, as shown at 12. The bottom walls 13 of said depending; legs are likewise convexed, The end Walls 14 of said deg ending legs are substantially vertical. Each. foot is formed so as to have the longitudinal, r, bottom-portion 1.5, the for Ward end of which is upturned to provide through ertical ivalls or flanges 17 of screw in any usual manner. Centrally 'oiE rections by contact of said "w alls with the re the usual toe 16, and the rear end of which is *cated by 35yand shown as carrying an ecficentrlc 36, WhlCh, in this instance, 13 con- ,'siderably elongated, as shown in Fig. 7 and the foot and through the groove 100i the convex reach foot has a bodily around sci screw 2 as a center.

' the shank, on the web 11, as a center, limited y 1 distributed equally to the latter; and this 15 true irrespective of the thlcknesses, or varydep ling leg and pivots upon the transextended Web 11 of said leg. The d walls 12 and 13 of the legs 9. per

nut th tree rocking movement of the feet. By ttirming the shank, legs and feet of the presser-foot, and combining them, as describedrand clearly shown in the drawings, the shtnlt can journal or rock on the screw 2 in the socket-portion l and, in consequence, artial revolving motion In addition, each foot has a rocking motion transversely of its length, and relatively to by contact of theflcnges 17 of the foot with the end 1401? the depending leg. Also, each foot a longitudinal pivotal or rock ing motion on and relatively to its support ing-leg, this rocking movement being also on the lVQlJ 1]., limited by contact of the bottorn-portion 15 of the foot with the front and rear ends of the said legportion. Thus, it Will-be that each of the feet has six motions, four of which are independent of each other and two of which are bodily together. lt will also be seen that the pressure on the two feet and the pressure of the latter on the work is uniform, since the pressure on too shank 4 is. centrally thereof and linidway between the two feet and is ing thicknesses, feet. Figs 1, 3 and 4 give ideas of the manner which the feet may yield and operate, relatively and together; but, in order to SllO'W the scope and mode of operation of my invention, reference is made to Figs. 7 to 10, wherein the duplex-foot is shown in a wide-gage machine operating upon the body materittl 19, on one side and upon the body-material and binding 20, on the other side, said materials resting upon the Work or, throat-plate 2]. and being engaged under each foot by a feed-dog 22, the shank-portion 23 of each of which being provided with a vertical slot 2%, through which passes on adjustingzsslrew 25, which is tapped into a. block 26, having a rib'27, which engages a groove in the back of the shank 23, said block 26 being received in a groove 28', extending longitudinally of the cross-bar 29, supported upon the feed-bar 30, the rear end of which is journaled in usual manner at 3]. on the upper end of the rocking-frame 32, which, as is Well known, is journcled at its lower end 33 to the bed-plate ofthe machine. The usual connection 34 from the rocking-frame to the driving-shaft is only partially indicated, said shaft being indipassing under the respective SECIII'Ed to the feed-bar 30 by screws 40 and a bearing-plate ll secured by screws 42 to the bottom. of said feed-bar 30. A, suitable packing for lubricating purposes is shown in Fig. 9, The needles are indicated by 44 and may'hc one or more in number, each foot being provided with one or more needlenpertures 4 5 for the needles to pass through, as is usual. 'Ihcfced-dogs 22, clearly shown. in the several figures, uro Yen ticslly adjustable upon the cross-bar 99, by 11; cans of the slot and screw ill--25, and are longitudinally adjustable upon said cross bar by means of. the said screw 25 and the block 26 operating in the groove 28. Hence,

said dogs can be adjusted to any extent desired, according to the gage of the machine along the length of the cross-bar, shown by dotted and full line positions in Fig. 8, and may be adjusted vertically for more or less of gripping action, or feeding engage ment with the work. The width or size of the foot used will depend entirely upon the gage of the machine and the character ol the Work to "be operated upon and the results desired; and the duplcwfoot of Figs. 1 lot is shown of ordinary size, while the foot of Figs. '5 and 9 lS'SllOWD. of extraordinary gage or size. Irrespective oi size, the operation? and movements of the feet relatively and. bodily together are substantial identical, and the pressure, as prcviousl y stated, being central is necessarily equal on both feet and upon all portioiis of the work engaged thereby. Furthermore, the variations in. thick ness of the work passing under the foot will not alter the operative pressure of the latte: upon the Work, which, as previously stated, will be maintained throughout, owing to the uniform pressure at the middle of the shank of the foot; and it will be noted that, While one foot may be riding; onthick work, the other foot may be riding on thin work and... at the some time, one or both test may be momentarily riding on vstryihg thicknesses of Work produced by cross seams and may, in consequence, yield both laterally and longitudinally independently.

While I have shown my foot as duplex in character, it is obvious that the features of construction shown and described may be embodied in a single foot. in consequence,

I purpose phrasing certain of my claims to cover my invention irrcspectivi of the number of feet carried by theslnmk,

Having thus described my invention, what I" and desire to secure by Letters Patentis:

1. A resser-foot comprising a socl wbpor tion, a, shank-portion journaled on the :Lmmm

sockebporfion so as to on anti rein tively themto', and 21 fuoirportien jamimied W said shzmlepartian so as U swing 0n and raliatively ihel eto at a right-angle to the dil'eciun 0;? swing of the shanl-z-gwrbiom Sui:- iammiafly as @escribedi.

2. A. pmessexvfooh comprising a socketportion, a Hank joum'aisd 0n ;1 horizentaiyive't extending from firont to rear of they smkat-pm-tion, said shank having a dependux iending at :1 right-angle thereto, and hloh-pnrfimtl jounmleri on the said peniing leg 51) to swing on and relatively A pmssewfoot comprising a socket-p01 iziunia shank journaled (m horizoniai pivot extending from from; 0 rear of the soqkev portion and having a pair of depending arranged in parallelism, each of said legs having jourl'lsfled 011 it a foobpmtio-n Whereby the 1mm may swing on and relatively to sui kg.

In testimony whereof I have hereunto signed my name in the presence of two subsc nbmg RV'IU1 SGS.

JOHN P. WEI

' Witnesses; V

OSCAR DEVOE, 'A. 1311mm.

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