US1423313A - Bobbin winder - Google Patents

Description

F. DOUGLAS.

BOBBIN WINDER- APPLICATION FILED FEB- 16, 1921.

1 ,%2 Q3 1 3, Patented July 18, 1922.

2 SHEETSSHEET I.

F'IEQL P. F- DOUGLAS.

BOBBIN WINDER. APPLlCATlON FILED FEB. 16, 192 1.

Patented July 18, 19225.

2 SHEETS-SHEET 2- Y t ps n any: n at! is it at. i ii ta rnILirrAmcLnuo-ir nonerns, or MrmvnnosacAnAnA.

BOBBIN WINDER.

I Application filed February T0 aZZ whom it may concern:

Be it known that I, PHILIP FAInoLnUorI DOUGLAS, a subjectv of the King of Great Britain, residing at; the town of Minnedosa, in the Province of-lVlanitoba v in the Dominion of Canada, have invented certain new and useful Improvements in Bobbin Wind.- ers, of which the following is a specification.

This invention refers to improved means for winding the bobbins of sewing machines,

particularly theheavy dutymachines used by shoe makers for patching. Prior to the present invention the entire attention ofthe operator was required to. be given tothe operation when it became necessary to wind a bobbin, it being even necessary tohold the spool from which the thread was drawn and to guide the same as it was wound upon the .7 bobbin. The object of the present invention is to provide means whereby.v after the end of the thread has been connected with thebobbin no further attention from the operator is required, the several acts of winding whichthe thread upon the bobbin, evenly distributing the saidthread as it is wound and the stopping of thebobbing when fully wound;

being automatically performed.

With this object inview the invention re-- sides in the novel construction and combina tion of parts hereinafter first fully described in the following specification and then more particularly pointed out in the appended claims, reference also being had to the draw ings forming part hereof in whichsimilar characters of reference indicate similar parts throughout the different views, and in Fig. 1 isan end elevation of-a portionof a sewing machine showing thedevice con nected therewith and independently *bclt driven from the shaft of the sewing machine. p

Fig. 2 is a front elevation of the device and its connection with the sewing machine. Fig. 3 .is a plan sectional view taken upon the plane of the line 33 in Fig. 1.- I

Fig. 4; is the bobbin winding apparatus as viewed in the direction indicatedby the line 4.--4 in Fig. 1.

Fig. 5 isan end elevation of the device i connection with a sewing machine, this being a modification in that the bobbin winder Specification of Letters Patent.

16, 1921 Serial No. 445,529.

Fig. 6 is a front side elevationofthe device shown inFig. 5. i

Fig. 7 is, an enlarged top plan view of the spoolholding part of the mechanism and the thread tensioning device thereon.-

' Fig. 8 is an enlarged end elevationof the spool holder and tensioning mechanism viewed in the directionindicated-by theline Fig, 9 is an enlarged end elevationof the. bobbin winding mechanism, andshowing the sewing machine.

Fig. 10 is a rear side elevation of the bob bin winder as viewed in the direction of the line 10+-10 in Fig. 9.

Fig. 11 is anend View of the thread distrlbuting and bobbin stopping member;

Fig. 12 is; a side view of the member shown in Fig. 11.

In the present. disclosure the device is shown in suitableform for detachable connection with sewing machines of standard: design, so that users of suchmach'ines may obtain the benefits of the invention without any change whateverjin the construction of their said machines, it will however be obvious to persons familiar with the art that the mechanism can be advantageously adapted in new constructions to form an integral part of thesewingmachinestructure.

In the drawings A indicates so much of a clamp used to det achably connect it with the sewing machine of standard design as is nec- 1 top toengage the under side of the said top.

A. pedestal '17 rises. from the base member 13 and a spindle 18 is rotatably journalled Patented uly 3L8,,192%,

in thepedestal, the spindle. being preferably v of slightly tapered conformation so that a bobbin 19 may be placed thereon, and held byfrictional contact to rotate in unison with the spindle, a ;ulley-20- on the spindle connected by a be t Zlwith the shaft 22 ofthe stitching mechanism of the sewing machine A, providing means for. the. rotationofthe spi le I A member 23. has its'lowerend connected bifurcated to form an inverted V shaped..

opening 26 in the face of the hood, the apex of the opening 26 being continued to form an upwardly extending slit 27.

The arm supporting pedestal 28 of the sewing machine B, is mounted upon a plurality of legs 29, and the spool holder G comprises a base 30, adapted to lie fiat upon the top 14' of the sewing machine, the base 30 being shaped to provide a recess 31 adapted to snugly receive one of the legs, 29 and to be thereby removably maintained in position upon the top 14.

A spindle 32 projecting vertically from thebase 30,is adapted to receive a spool of thread33 rotatively thereon, and a plurality of members 34: projecting upwardly from the base 30 in irregular or zig zag formation, have their upper ends shaped to form eyes 35, through which the thread 36 passes from the spool 33 to the bobbin, the irregular disposition of the members 34 compelling a tortuous course of the tread and creating a suitable tension of theysame, for .bObblIl winding purposes.

37 in licates a stop which serves to re strict the rotation of the member 23 in one direction.

Whenit is desired to wind a bobbin, the end of the thread 36 is drawn down into the slit 38 usually found in the flanged end of.

a bobbin for this purpose. The bobbin is then placed upon the spindle18 and the sewing'machine started the thread passing into the bobbin by way of the opening 26 in the a face of the member 23 and being guided thereby the said member being free to move upon its pivot 24 from side to side. As the winding proceeds and the bobbin fills the thread rises higher and higher'in the opening 26 until finally when the bobbin is full it reaches and jams in the slit 2? thus stopping rotation of the bobbin and spindle 18. As the power required to wind the bobbin is of course very small the belt 21 is run very slack so that when rotation of the bobbin ceases the belt may either continue to run idly over the pulley 20, or it may cease movement and stand idle upon the shaft 22. When the filled bobbin is required for use in the sewing machine the "threadis cut by the operator, the member 23 is rotated'on its pivot 2into the position indicated by the dotted lines in Fig. 4, when the bobbin may be removed from the spindle. The variation shown in'Figs. 5 and 6 refers only to 1 the method of driving the spindle, a friction pulley 38 being mounted onthe said spindle in driving contact with the belt 39 by which the sewing machine itself is driven. In all other respects the devices are similar and when the bobbin is full the pulley38 which rests lightly against the belt, simply stands still until the bobbin is removed.

From the foregoing description it will be seen that the member G provides for the holding of the spool from which the thread i is drawn tothe bobbin under tension by reason of its passage through the eyes 35 of the members 34, while the member 23 of the part B provides in simple form the means by which the thread is. distributed onthe bobs bin, and the said bobbin prevented from further rotation when fully wound.

Having thus fully described mysaid in-v vention what'I claim is- 1. A device ofthe kind described comprising i a suitably supported spindle adapted to receive a bobbin in intimate relation therewith, a member forming a hoodover the bobbin, an opening in the faceof the hood, means to feed thread to the bobbin through the opening in the hood, means to rotate the spindle from the sewing machine to fill the bobbin and a slit upwardly directed from the opening in the hood in which the thread jams to stop rotation of the spindle when the bobbin is full. I

2. A device of the kind described comprising a suitably supported spindle adapted to receive a bobbinv in frictional engagement therewith, a member pivotally mounted for restricted lateral movement forming a hood over the bobbin, an invertedlflshaped opening formed in the extremity of the hood member permitting entrance of the thread to the bobbin, means to rotatethe spindle from the sewing machine to fill the bobbin, and a slit upwardly directed from the apex of the opening in the hood in which the thread arms when the bobbin of the spindle. I l

3. A device of the kind described comprising a base, and means to removably clamp the base to a sewing machine top, a pedestal rising from the base, a spindle suitably supported from the pedestal adapted to receive a bobbin, a member pivoted to the structure and having a portion shaped to form a hood normally positioned over the bobbin, an inverted V-shaped opening formed in the extremity of the hood constituting an entrance for thread to the bobbin, means to rotate the spindle from the sewing machine to fill the bobbin and a slit connected with the openis full to stop rotation ing in the hood in which the thread jams.

a spindle, a spindle rotatably supported from the structure,'adapted to receive abobbin, means to rotate the spindle frqm the sewing machine, and means to evenly distribute thread to the bobbin, and tostop rotation of the spindle when the said bobbin has been filled, said last means comprising a member having a vertical portion pivoted to the structure for limited lateral movement merging into a curve constituting a hood over the bobbin, the hood portion being bi-

Images