US1783449A

US1783449A - Thread-extracting needle

Info

Publication number: US1783449A
Application number: US348512A
Authority: US
Inventors: Picard Stanislas
Original assignee: B B & R Knight Corp
Current assignee: B B & R Knight Corp
Priority date: 1929-03-20
Filing date: 1929-03-20
Publication date: 1930-12-02
Anticipated expiration: 1947-12-02

Description

Dec. 2, 1930. s. PICARD THREAD EXTRACTING NEEDLE Y Filed March 20, 1929 Patented Dec. 2, 1930 UNITED sTATEs. -VPATENI OFFICE s'rANIsLAs PICARD, or PROVIDENCE, RHoDEIsLaND, AssIGNoR fro D. B. a R. KNIGHT coRroRAfrIoN, or PROVIDENCE, RHODE ISLAND, A CoRroRATIoN oIvRIIoDE ISLAND THREAD-EXTRACTINGNEEDLE V Application inea March 20, i929. serial No. 348,512.. I

spreading of the threads which it is desired should remain in the fabric by forming the needle with a dimension Vat right angles to the notched edges sufficient to spread the threads as the needle is passed through the fabric.

With these and other objects in view, the

invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims.

1n the accompanying drawings Fig. 1 is a frontv elevation of the needle.

Fig. 2 is a side elevation at right angles to that shown in Fig. 1 of the needle.

Fig. 3 is a section of a fragmental portion of the needle showing the same as entering the fabric from which the threads are being removed.

Fig. 4 is a top plan view of the fabric with the needle in section showing its action upon the threads as it is initially passed into the fabric.

Fig. 5 is a view similar to Figs showing the fabric after the needle has been passed through the same a plurality of times and the threads deflected with portions of the threads to be removed cut from the fabric.

Fig. 6 is a section of the fabric showing the needle in position and taken substantially on line 6--6 of Fig. 5.

Fig. 7 is a section on line 7-7 of Fig. 5.

Fig. 8 is a section on line 8-8 of Fig. 3 showing the shape of the needle in cross section.

It is found in removing threads for hemstitching that as the threads to be deflected downwardly are received in notches in the needle that often the threads which should remain in the fabric are caught by these notches andbrolren o r ruptured and in orderl to avoid this undesirable result, Ihave provided anecdle which has a dimension at right angles to Vthe linejoining the opposite notched edges of the needleA Vsuch that it will spread the `threads which are to remain in the fabric and .prevent their catching 1n the notches of the needle andbeing ruptured or brokenthereby; and the following is a detailed description of the present embodiment of the inven- Etion illustrating the "preferred means by Ywhich these advantageous results may be accomplished. l With reference to the drawings, 10 desig- -nates `theslianlrof the thread extracting needle, which is substantially circular in cross Ysection and adapted to be held in the jaws of the reciprocating head of a thread extracting machine. This needle is tapered at its end to provide a point 11 the shape of the cross I1 section of the taper being square, as illustrated in Fig. 8, with the width of the needle substantially that of the width of the threads to be extracted from the cloth.

Gn two opposite corners 20 yof the needle I have provided a series of

notches

12, 13 and 14 to engage the

threads

15, 16 and 17 at either side of the center line 28 of the fabric,

' as illustrated in Fig. 5, to force these threads downwardly, as illustrated in Figs. G and 7, into the path of the cutter or severing means for removing them from the cloth.

The edges 18 which are at right angles to the notched edges of the needle serve to ention of these threads downwardly; as the lgoods are fed forwardly and the subsequent strokes force the broken ends of the threads downwardly, as illustrated-in Fig. 7, to be severed by the cutter and so on throughout the length of the fabric to remove the threads .A

15, 16 and 17 on each side of the center line along which the point l1 of the needle acts.

I have found it of advantage to provide a plurality of notches on the needle so that should one notch fail to pick up the thread to be removed a subsequent notch along the taper of the needle Will be engaged by this thread to deiect it into the path of the cutter which acts upon the cloth in the usual manner of the thread removing machine.

The foregoing description is directed solely towards the construction illustrated, but l desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only by the terms of thc appended claiins.

I claiin:

1. A thread extracting` needle having a tapered fabric engaging end portion, two diainetrically vopposite thread engaging edges having spaced notches therein, and diametrically opposite sinooth thread engaging edges positioned between the said notched edges.

2. A thread extracting needle having a tapered fabric engaging end portion of square cross-section, two diametrically opposite edges having spaced notches therein, the other two edges being smooth. i

In testimony whereof I afx inv sifnature.

sTANIsLAs Pionn.