US1154373A - Presser-foot. - Google Patents

Description

J. CALLAHAN,

PRESSER FOOT.

APPLICATION FILED MAY 8, 1-905.

1 1 373 Patented Sept. 21, 1915.

2 SHEETS-SHEET].

I 4 I 26 657665565. ,yu/ 6m;

m W Q/K ji [iii/ W45 A J dw J. CALLAHAN.

PRESSER FOOT.

APPLICATION FILED MAY 8. 1905.

Patented Sept. 21-, 1915.

2 SHEETSSHEET 2 TENT OFFICE.

101m CALLALHA or LYNN, MASSACHUSETTS.

PRESSERJTOOT.

Specification of'Letters Patent.

P tented Sept. 21

i Original application filed Deceniber 29, 1903, Serial No. 186,958 Divided and tlii s'lapplicatioii fiiamy s,

To all whom/it may concern} 1 'Be it known that I, JOHN Cannitnmg a citizen of the United States, andanresident of Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Presser- Feet, of which the "following is a specification.

'Thepresentfinvention comprises a presser adapted for use in connection with, sewingmachines, 'etc., "and operating mechanism therefor, the objectof the. invention being to provide an improved form of .pressei' and.

1 represents an end elevation of a sewing-- machine having my improved presser and operating,mechanisni applied thereto. Fig.

2 represents a side elevation of the same Fig. represents a'-deta1l (lQYfltlOnOf the mechanism for operating the presser.

The same reference characters indicate the sameparts in all 'the figures, and are the same those used in'the patent referred to.

The. presser-foot is represented by the nth meral 59 and is carried by a bar (30' movable longitudinally inflbearings on the machinefran'ie, being operated from-a cam (it on the main shaft. 260 ofthe machine through an arm 342. link 63 and lefer (31' connected to the bar (50f Power is furnished to the shaft 2430, by means of a pulley 27 adapted to re- 'ceive -a belt, although obviously any other desired means for rotating the shaft might be employed. I to the machme-frame andsecijirely 'a-stcned Serial no. 259,283. 7

lever, although obviously-the relation of the pin and notch might be reversed. A spring' 9:) connected both to the link and lever is provided .and arranged, so as normally to tend to hold the .pin at the bottom or end'60 of the notch. Driving connection bete'e'n cam 6i and link (33 is made by eans ofa rocker-arm 6&2 pivoted at 043 to' the ma chine-frame and at 64A to'the link." A"stud* 6-41 on the rocker-arm projects into a cam- 65 groove (H0 in the face of the'c'am. Itavill" therefore be seen that as the shaft 260mm w cam 6i rotate, a portion of the cain-gro ove being' eccentric. the link is reciprocatedv'en ticallyand as it is so reciprocated,"the projeCillOli 93 engages first one side and then the link (33 so that when the lever isljrotated' tlii other of the irecesstli to oscillate-the lever 61 and raise and lower the 'p'rfesser-foot for permitting feed of the Work and clamping it between thesteps of the feed. Ordinarily with a presser of this character, the footwill be pressed down upon the work at theend of a complete, operation and in ordento re more the finished wvork and substitute a new piece, it is necessary, to separate the foot-0 from the Work-support, and in order to permit; such separation, nieans'funder. the control of the operator is provided for .disconnectingthe presser fron1 its op'erating mech ani-sm. This means consists of a lever 96' pivoted at 97 to the n' acl iine frame and hav inmone arm extended adjacent the end of endivill engage the link :and-nio 'eiit away i from the lever 61 aga nst the ',te ns1on' 'of "90 spring 05 to separate pin '93 from the islet '94-. \Vhen this has beendone the lever 61".

. fronr the \vork-support a v to release theyork: .'l he link onbei g 're -lease 'l is drawn to\v:1rd, ,th e lev r The lever't i is pivoted'at 62 in any desired \v-a vto the presstr-birnot). If

"desired.- a ,portionof the le er may lie'inade I of yielding, material in order tha t the presserfoot. fnay have a yielding action upon the formed in the rear end of the and presser will be free to he noifed' manually and the latter can then he separated 61 spring but as the notch. th enout o fl with pin 93 the latt ,ntil l. .st against the end. 511 of thelever ah et 'l \Vitlf tl ioonstri-ictioir shoivn the ini L raised toits. highest p ual operationnfthe-1 and consequently pin 9, notch 9-1 andzon:starting, the'link'wi'll belowere' ,an dithe pinlas soon as it rea'ches the level 0 ,thei otchfivilll drawnIintoathe; latter bylthe force" of the spring, thus auton'iatically reconnecting the presser with its operating mechanism withchi out attention on the part ofthe operator. I

Although I have shown my improved- .presser and operating mechanism therefor in connection with a sewing-machine, it is obvious that the presser is not limited to use in such a relation since it can also be as well used in any other machine which performs a series of operations on workrequiring the work to be intermittently held and released between operations. I claim a v 1. The combination of a Work-support, stitching mechanism, presser-operating mechanism to force a presser againstthe work-support and work held thereon, a presser disconnectible from said operating mechanism through the agency of the operator, and provisions for automatically reconnecting said presser with its operating mechanism by the movement of the latter. 2. The combination of a work-support, a presser, operating mechanism therefor including a lever and a reciprocating link having a disconnectible pin and slot engagement, yielding means tending to hold said link and lever in operative connection, means under the control of the operator for disconnecting the same, and provisions for retaining the same out of operative connection, said provisions being constructed and arranged to permit automatic re-connection thereof when the operating mechanism is in a predetermined position relative to the presser.

3. The combination of a work support, a

presser, and operating mechanism for the presser comprising. in part a reciprocable member, mechanism for reciprocating suchmember, and a member connected to the presser, one of said members having a recess and the other a projection arranged to enter the recess and engage alternately the opposite sides thereof, such sides being abrupt to the line of motion of the projec tion, whereby driving movement is imparted from one of said members to the -other.-

l. Thecombination of a work-support, a presser, a bar carrying the presser, a member connected to the bar, operating mecha-- nism for the bar and presser comprising in part a reciprocable member, one of said members having a recess and the other a projection arranged to enter the recess and engage the opposite sides thereof alternately and in a manner such as to cause motion, and means actuable'by the operator for separating said projection from the recess to disconnect the presser bar from the operating mechanism.

5. The combination of a work-support, a presser, and operating mechanism therefor, comprising in part a reciprocating men ber, an intermediate member suitably connected with the presser; one of said members having a projection and the other having a notch adapted to receive said projection, and also having surfaces extending from said notch adapted to engage said projection and permit the same to slide thereon when it is out of the notch and yielding means draning said members together. 1

6. The combination of a Work-support, a

-presser, and operating mechanism for the presser comprising in part a member connected to the presser, and a reciprocable me1nber,.o ne of said members having a slot and the, other a'projection arranged to enter the recess and engage the sides thereof,

and an arm operable by the machine operator to engage said reciprocable member and move the same away "from the other member, whereby. the." projection is re-,

' able connecting means tending to bring and retain in connection the operating mechamsm andpresser operative to cause an automatic connection thereof upon further move- 'ment of the operating mechanism;

8. A 'presser mechamsm comprising a presser foot, a member-connectedwith said foot and having a notch, an actuating mem-' ber having a pin normally contained in said notch and engageable with the opposite sides of the notch during movements-in opposite directions respectively, and manually operated means for displacing said pin from .said notch, whereby to disconnect the presser foot from the actuating member.

In testimony whereof;I harefafiixed my signature, in presence of two witnesses.

JOHN CALLAHAN. \Vitnesses: ARTHUR H. BROWN,

' E. BA'rcHEIgnnR.

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