US1518090A - Thread guide - Google Patents

Description

H. MARSH.

THREAD GUIDE Filed April 1924 Patent a HAROLD MARSH, OF NEW IBZEDFORD, MASSACHUSETTS. i I

THREAD GUIDE.

Application filed April 17, 1924. Serial No. 707,052.

To all whom it' may concern:

Be it known that I, HAROLD MARSH, citizen of the United States, residing at New Bedford, in the county of Bristol and State of Massachusetts, have invented certain new anduseful Improvements in Thread Guides, of which the following is a specification.

This invention relates to certain new and useful improvements in thread guides and pertains more especially to a thread guide for shuttles employed in'automatic looms.

The primary object of the invention is to provide improved means for preventing the thread from blooming out or catching against any of the projecting parts of the guide in use, or in threading, andthereby being broken, and at the same time to prevent the thread from being disengaged or unthreaded from the guide.

The invention still further aims to provide means of the character set forth which is of simple construction, which can be easily and quickly applied to the thread guide and which, is economical.

The invention has still further and other objects which will be later set forth and manifested in the course of the following descri tion.

In t e drawing? Figure 1, is a agmentary top plan view of a shuttle having the thread guide of the present invention a plied thereto;

Figure 2, is a si e elevation of Figure 1 partly broken away and in section;

Figure 3, is a front end elevation of the invention detached'from the shuttle, and

Figure 4, is a detail perspective View of the lL-shaped guard member.

In proceeding in accordance with the present invention the shuttle 1 is depicted as equipped with a thread guide which has superposed communicating axial thread passages 2 and 3, the latter communicating with a transverse groove 4 which leads to the delivery eye E of the shuttle. A depending finger 5 guards the groove 4, while the upper passage 2 is guarded by an inwardly extending finger 6 located adjacent to the outer end of passage 2, which finger 6 lies in spaced relation to and o positearni 7, latter extending outwardly e 0nd the fin er. The upper portion of the guide bo y is formed with athroat portion 8 communicating with the upper passage 3, a finger 9 guarding the passage 3 at the inner end of the latter.

The present invention resides in the provis1on of a piece of wire or rod 10 which extends downwardly at an angle across the inner end of the tthroat 8 and across the finger 9 in spaced relation thereto, the lower end of the wire '10 being spaced from the wall defining the lower part of the throat end wall of the guide body and extends up wardly therefrom to one side of the finger 5 and which terminates in abutting relation to the downwardly extending guard rod 11 at a point beneath" the latter and between the ends thereof. JThe vertical arm or part of the .L-shaped guard rod 12 extends substantially diametrically across the space alined with the passage 3. e

From the foregoing it will be apparent that the thread cannot catch or become looped about any projecting part of the guide during threading or in operation of.

the shuttle.

In threading of the shuttle, the thread is initially engaged with the rod guard -10 and finger 6 and is then moved downwardly,

passing beneath guard 10, and riding down rod guard 11 and past the latter, along the vertical part of guard 12 j and then enters lower passage 2, passing through groove 4 to the delivery eye.

To apply the rod guards it is merely necessary to bore holes in the guide body and .to then drive the rods therein, frictional contact being sufficient to hold the rods securely in place. What is'claimed is; 1. In combination with a thread guide having an upper thread passage with a throat portion guarded by inner and outer fingers at its ends, and a lower thread passage with a. depending finger at the outer end of the latter, an inner downwardly inclined rod guard extending across the inner finger in the throat and spaced at one end from the latter, a substantially L-shaped rod guard extending outwardly fromv the guide and alongside the depending finger and spaced from the latter, and an outer downwardly inclined rod guard extending across the front part of the guide body between the depending finger thereof and the inwardly extending finger, the upper end of the vertical leg of the [L-guard engaging the outer downwardly inclined guard at a point central of the length thereof.

2. In combination with a thread guide having an upper thread passage with a throat portion guarded by inner and outer fingers at its ends, and a lower thread passage with a depending finger at the outer end of the latter, a guard disposed adjacent the inner finger, a second guard disposed adjacent the depending finger, and a third guard disposed between the depending finger and the inwardly extending. finger and being engaged withthe second guard;

3. In combination with a thread guide having upper and lower communicating thread passages the upper of which has an neiaoeo inner and outer finger and the lower a: finger at its outer end, a guard for the inner finger of the upper passage, and guarding means for each of the other fingers having parts which engage.

4., In combination with a thread guide having an upper and a lower finger at its forward end, a downwardly inclined guard extending adjacent the up er finger, and a guard disposed adjacent to the lower finger and having an upwardly extending portion engaging the first named finger.

5. In combination with a thread guide having an upper and a lower finger at its forward end, a downwardly inclined guard extending adjacent the upper finger, and an L- shaped guard disposed adjacent to the lower finger and having a part thereof extending upwardly and engaging the first named finger at a point between the ends thereof.

In testimony whereof ll afix my signature.

HARQLD MARSH.

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