US112531A - In feeding mechanisms for sewing-machines - Google Patents

Description

UNITED STATES To all/whomit may concern: y y i Beitknown that I, ROBERT M. BERRY, of Brooklyn, in the countyot Kings and State ofl` `New York, have invented certain Improvehines, ofwhich the following is a specification My invention jrelates tothe feeding mech! nislrnof sewinglmachines; `andconsists in a novel combination `and arrangement of parts, whereby a continuous and positive movement is given to thefeedbarjfor feeding material in Fignrel is' aside elevationof my invention ttached toaseWing-machine. Fig. 2 is a ver- *tical' transverse view of y thesame, showing those parts to theleft inlFig. l. .y l

A is the bed of a "sewii`1-g-machine B, the feed-bamto which is secured, ina proper man ner, a bar, G, the upper endofwhichis notched, and projects through a slot in the bed of the `machine attheproper time, and acts lon the under side of the materialto be fed. y

` This bar B is slottedatboth ends inlthe diection of its length, and isgpivoted and slides n the pin a., which is secured to the bed of the machine, andholds the bar B in position at that end. `ll To the end of" the driving-shaft ofV the mahine I'secure a collar,F,`lin which is a crankpin, b, on which "is hung thelever D, the upper end of which isslotted to receive a stud, c, that `lis `firmly screwedjin thebed of the niachine,

and acts as fa i'ulcrum `for the lever D. y'

The pin d is securedftirmly in D,and passes through the slot indicatedby thedotted line on thebar B, andholds it in position. l The link E is connected to the bar B by the screvvstud e, endet-o1` the llever D, which is Pe'rE'rn OFFICE.

1 l RoRERr `iexER-Rv, oEBRooKLYRnEW YORK. MIlSRovEMERT MEcHANIsMs PoR SEWING-MACHINES.

Y spammenforming/@h of Leners Patent No. 112,531, dated Meret 14, 1871 5 madam i' February 28, 1871.

slottedin the are of a circle, by a stud and thumbfnut, g, the link E being hung on the inside end of the stud, and fitted to allow the s link E to vibrate. ments in Feeding Mechanism for fzlewingMa` Fig. I represents the `harB and notched surface C raised to their highest point, and in the act of moving the material to be sewed, which is held on the notched surface C by a springpresser'foot, as in ordinary lsewing-machines. v

The driving-shaft Gand collar F, revolving `in the direction of the arrow, give motion, by

the crank-pin b, to the lever D, which, being connected to the bar B by the link E, gives to thenotched surface C sui'lcent movement for the purpose ofi'eeding the material to be sewed before U, in its movement, which is elliptical, gets below the surface of the bed A.

To regulate the length of stitch, I loosen the thumb-nut g and ra se the link E to shorten,

` and vice versa to lengthen, the stitch.

By my improved mechanism I have secured a positive and noiseless movement, and a perranged, Iand operating substantially as and for the purpose hereinbeiore set forth.

' ROBERT M. BERRY.

Witnesses:

JOHN FANNING,

EDWARD NUGfENT.A

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