US748913A

US748913A - Fo model

Info

Publication number: US748913A
Authority: US
Publication date: 1904-01-05
Anticipated expiration: 1921-01-05

Description

" Nf748,913. I PATBNTED JAN. '5, 1904. s. B. BATTEY.

THREADING DEVICE.

APPLIOATION FILED MAR. 11. 1903. no MODEL. z sums-sum 1.

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No. 74-8 913. .PATENTED JAN. 5,1904. s. B. BATTER. THREADING'DEVIGE'.

APPLIGATION'IILED MAR, 11. 1903.

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UNITED STATES.

Patented .Tanuary 5, 1904.

SUMTER BEAUREGARD BATTEY, OF NEW YORK, N. Y.

THREADING DEVICE.

SPECIFICATION forming part of Letters Patent No. 748,913, dated January 5, '1 904.

Application filed March 11, 1903. Serial No. 147.248. Q mo el-1 resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Threading Device, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved threading device designed either for hand use or for use on sewing-machines to automatically push "the sewing-thread through the needle-eye whenever the device is in activeposition and the needle moves into an uppermost position.

The invention consists of novel features and parts and combinationsof the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming apart of this specification, in which similar characters of reference indicate corresponding parts in all the views.

' view of the same.

Figure l is a side elevation of the improvement applied to a sewing-machine, parts of the latter being in section. Fig. 2 is an edge Fig. 3 is a rear side elevation of the same, parts being in section. Fig. 4: is an inverted sectional plan view of the same on the line 4 4 of Fig. 3. Fig. 5 is an enlarged sectional side elevation of the improvement. Fig. 6 is a sectional plan view of the same on the line 6 6 of Fig. 5. Fig.- 7 is a cross-section of the same on the line 7 7 of Fig. 5. Fig. 8 is an enlarged front end elevation of the improvement. Fig. 9 is an enlarged sectional side elevation of the hearing in the operating-lever and the shank of the wing held to slide transversely in the said bearing. Fig. 10 is a sectional side elevation of a modified form of the improvement as arranged for hand use,,and Fig. 11 is a front end elevation of the same.

The improved threading device is provided with a guideway or frame A, having an upwardly-extending arm A, slidably connected with a link B, fulcrumed at B on the head 0 of the sewing-arm O of a sewing-machine, as plainly illustrated in Figs. 1, 2, and 3, and the said arm A and link B are fastened together by a clamping-screw 13*, extending through registering slots A and B in the arm A and link B, respectively. (See Figs. 1 and 3.)

In the guideway A is mounted to slide lengthwise a plunger D, carrying at its front end a removable point D, having in its free end a groove D for readily engaging a sewing-thread E to push the sewingthread through the eye of a needle F, secured in the usual manner on the vertically-reciprocating needle-bar F of the sewing-machine.

The circular forward end A of the guideway A is formed with a vertically-disposed receiving slot or mouth A, having beveled sides and arranged in alinement with aguide F held on the needle-bar F, and through which passes the sewing-thread E previous to passing into the mouth A and into the eye ofthe sewing-needle F.

Onvthe top of the circular end A are arranged transversely-extending clampingarms G, fulcrumed on supports G, located on opposite sides of the mouth A, (see Fig. 8,) and the said clamping-arms are pressed on by springs G to engage their inner or free ends with opposite sides of the thread E to hold the latter against upward movement or to allow free downward movement of the thread as the latter is pulled in a downward direction by the needle F on its descent.

It is understood that the clamping-arms G normally are in a slightly downwardly inclined position,

as plainly shown in Fig. 8, so that in exerting adow-nward pull on the thread E the latter readily slides downward; but as soon as the pull ceases the springs G on the clamping-arms cause the latter to press and clamp the thread to hold it against upward movement. The thread E is passed by the operater between the arms G downward into the mouth A and the thread is held against sliding out of the mouth A in a longitudinal direction by a cross-bar G secured to the end A at or near the terminal of the said end, as plainlyindicated in Figs. 5 and 8. The thread in the mouth A extendsin the path of the groove D of the point D of the plunger D for the latter to push the sewing-thread into to push the plunger outward against the tension of the spring D whenever it is desired to push the sewing-thread E by the point D into the eye of the needle. When this has been done and the pressure is released on the cross-head D, then the plunger D flies back immediately by the action of the compressed spring D If desired, the plunger D may be moved automatically in an outward direction at the time the needle F moves into an uppermost position, and for this purpose the following device is provided: In the cross-head D is mounted to slide transverselya pin D adapted to be projected at its rear end into the fork H of a lever H, fulcru med on the pivot B for the link B, previously mentioned, and in the upper end of the said lever H is arranged a square transverse opening for the reception of a similarly-shaped shank I, mounted to slide transversely in the said bearing and carrying at its outerend an inclined wing I. This wing I is adapted to be engaged by the free end of an arm F projecting from the needlebar F, through an elongated slot C in the head 0, as plainly shown in Figs. 1, 2, 3, and 4. Now when the pin D is pushed transversely by the operator, so as to engage its rear end with the fork H of the lever H, then the lower end of the wing 1 stands in the path of the free end of the arm F (see Fig. 3,) and when the needle-bar F slides upward its arm F engages the inclined wing I and pushes the same to one side, and as the wing is held on the upper end of the lever H a swinging motion is given to the lever H,which by its fork H engaging the pin D slides the cross-head D and with it the plunger D outward against the tension of the spring D Now this outward movement of the plunger D causes its point D to push the sewingthread E out of the mouth A into the eye of the needle F at the time the latter reaches an uppermost position, and when this takes place the free end of the arm F leaves the upper end of the wing I, so that the plunger D immediately slides back to its normal position by the action of the spring D Thus the point D instantly leaves the eye of the needle as soon as it has pushed the thread through the eye and before the needle F begins its return or downward stroke. It is understood that when the needle-bar F actuates the lever H while moving upward in the last portion of the upward stroke the plunger D is gradually advanced, so that the point D pushes the thread through the needle-eye, now registering with the point D, and at this time the needle-bar arm F leaves the upper end of the wing I, thereby releasing the latter, the lever H, and the plunger D, and the spring D now returns the plunger D, the lever H, and its wing I to their former positions-that is, the plunger-point D leaves the thread and the needle-eye. The mouth A forms a guide for the thread to bring the latter accurately into the path of the plunger for the latter to positively engage the thread and push it through the needle-eye. The eyes in sewingneedles are, as is well known, elongated in a verticaldirection, so that the plunger D has sufficient time to push the thread through the eye of the needle and return, as above described. After the plunger D is retracted by the action of the spring D then the operator moves the wing I transversely in the upper end of the lever H and out of the path of the arm F so that the threading device remains dormant until it is again required for threading the needle automatically by the action of the sewing-machine, and when this is intended the wing I is again moved forward into the path of the arm F In order to transform the device back into a hand-actuated mechanism, previously described, the pin D is withdrawn, so as to disengage the rear end of the pin from the fork H.

If desired, the threading device may be swung out of position, owing to the connection of the link B with the guideway A, so that the threading device is not in the way of the operator using the machine.

In order to allow convenient removal of the point or pin D from the plunger D, I prefer to make the rear end A of the guideway A removable, as shown in Figs. 10 and 11, which figures also illustrate the device more particularly adapted for hand. use. The rear end A is normally locked in place by spring-catches A engaging the guideway, and pins A held on the end A and fitted to slide in the guideway.

For the hand device the bottom of the guideway A is also preferably provided with a spring-tension device J, formed by oppositely-disposed jaws, as plainly shown in Figs. 10 and 11, the jaws being arranged in alinement with the mouth A so as to temporarily hold the thread while using the threading device as a hand-machine.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination with a sewing-machine having an eyed needle, of a threading device forming an attachment for the sewing-machine and controlled by a movable part thereof, the said device having means for pushing the thread through the eye of the needle at the time the needle-bar is moving in the last portion of its upstroke, as set forth.

2. A needle-threading device comprising a guideway, a spring-pressed plunger mounted to slide in the guideway, and having a removable point for engaging the thread and pushing it into the eye of the needle, the said guideway being provided with a mouth for receiving the thread, to bring the latter into the path of the said plunger-point, and springpressed clamping-arms on the said guideway, above the said mouth, as set forth.

3. A needle-threading device comprising a guideway, a spring-pressed plunger mounted IIIO to slide in the guideway, and having a removable point for engaging the thread and pushing it into the eye of the needle, the said guideway being provided with a mouth for receiving the thread, to bring the latter into the path of the said plunger-point, springpressed clam ping-arms on the said guideway, above the said month, and a cross-arm extending across the mouth on the top thereof, adjacent to the said clamping-arms, as set forth.

4. The combination with a sewing-machine, of a needle-threading device arranged for attachment to the sewing-machine and having a spring-pressed plunger for engaging the thread and pushing it through the needle-eye, and means controlled from a movable part of the sewing-machine, for moving the plunger in one direction at the time the needle-eye is in register with the plunger, as set forth.

5. The combination with a sewing-machine,

. of a needle-threading device arranged for at- 6. The combination with a sewing-machine, of a needle-threading device arranged for attachment to the sewing-machine, comprising a guideway having a flaring mouth, in vertical alinement with a guide on the needle-bar, a plunger slidable in the said guideway and having a plunger-point, adapted to engage the thread in the said mouth, a cross-head on the said plunger, a pin slidable in the said cross-head, a lever having a fork for engaging the said pin, and means on the needle-bar for actuating the said lever, as set forth.

7. The combinatioh Wit-ha sewing-machine, of a needle-threading device arranged for attachment to the sewing-machine, comprising a guideway having a flaring mouth, in vertical alinemeut with a guide on the needle-bar, a plunger slidahle in the said guideway and having a plunger-point, adapted to engage the thread in the said month, a cross-head on the said plunger, a pin slidable in the said cross-head, a lever having a fork for engaging the said pin, and means on the needle-bar for actuating the said lever, the said lever carrying an inclined wing, transversely adj ustable on the lever, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

, SUMTER BEAUREGARD BATTEY.

Witnesses:

Tnno. G. Hos rnn, EVERARD BOLTON MARSHALL.