US1100477A - Spool holder and locking device. - Google Patents

Description

H. GOLDBERGER. SPOOL HOLDER AND LOOKING DEVICE.

APPLICATION FILED SEPT. 18,1913.

Patented June 16, 1914.

3 SHEETS-SHEET 1.

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COLUMBIA PLANOGRAPN co H. GOLDBERGER.

SPOOL HOLDER AND LOCKING DBVIGE.

APPLIGATION FILED SEPT. 18,1913.

Patented June 16, 1914,

3 SHEETS-BHEET 2.

HENRY GQLDBER ER BY% 2;,

COLUMIIA PLANOGRAPH C0 WASHINGTON. D. C

H. GOLDBERGER. SPOOL HOLDER AND LOOKING DEVICE.

APPLIGATION FILED SEPT. 18,1913.

1,100,477, Patented June 16, 1914. 4

3 SEEETSSHEET 3.

HENRY GOLDBERG/ER mfg COLUMBIA PLANOORAPH co.. WASHINGTON. D. c

UNITED STATES PATENT OFFICE.

HENRY GOLDBERG-ER, OF CHICAGO, ILLINOIS.

SPOOL HOLDER AND LOCKING DEVICE.

T 0 all whom it may concern:

Be it known that I, HENRY GOLDBERGER, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Spool Holders and Locking Devices; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

This invention relates to a novel device for locking spools of thread on sewing machines in such a way as to prevent the removal of the spools until the thread has been almost or entirely unwound therefrom and thereby prevent unauthorized removal of the spools with a portion of the thread thereon.

The object of the invention is to provide a spool holder and locking device therefor so arranged that after the spool has been mounted on the device it cannot, except by an authorized person having a key or like releasing device, be removed until the thread is completely unwound from the spool.

A further object of the invention is to provide a spool holder of this character which may be used to support and lock a plurality of spools having different colors of thread so that thread of one color may be readily substituted for thread of another color.

I have shown in the drawings one approved form of my novel spool holder and locking device which is hereinafter described more or less in detail, but it will be understood that the invention, in its broader aspects, is not limited to the details illustrated and described, except as such details are made the subject of specific claims, and as imposed by the prior art.

In the drawings: Figure 1 is a side elevation of a sewing machine head, showing my spool holding andloeking device in place thereon. Fig. 2 is a partial plan and partial sectional view, showing one of the locking units of the device. Figs. 3 and 4. are sections on the lines 83 and 44:, respectively, of Fig. 2. Fig. 5 is a horizontal section on the line 55 of Fig. 6. Fig. 6 is a vertical section on the line 66 of Fig. 5. Fig. 7 is a side elevation of the device. Fig. 8 is a section on the line 8--8 of Fig. 5, with Specification of Letters Patent.

Application filed September 18, 1913.

Patented June 16, 1914.

Serial No. 790,449.

parts shown in elevation. Fig. 9 is a view similar to Fig. 8, with the parts thereof in position to release an empty spool.

I have shown the device as adapted to receive and lock in position two spools of thread, but, as indicated in dotted lines in Fig. 5, a unitary device may embody four, or even six, units. Inasmuch as the units are identical, in the following description but a single unit need be referred to when describing the details.

The embodiment of the device herein shown comprises a frame which embraces a bed plate 10 adapted to rest on the sewing machine head, and a central post 11 which supports a casing 12 that incloses the principal parts of the locking mechanism, said casing comprising a bottom member 18, shown as made integral with the post 11, and a cover member 1 1 which may be made of sheet metal and which is adapted to fit down over the bottom member to complete the casing.

The upper end of the post 11 is reduced at 16 to extend through the cover 14L and the central part of the cover is clamped by means of a nut 18 down upon a shoulder 17 formed on'the post. The said nutis herein shown as made of sheet metal and is provided with spanner notches 19 for engagement with a suitable spanner wrench. The post 11 is hollow and it receives at its lower end an attaching stud 21, the lower screwthreaded end 22 of which is adapted to be screw-threaded into the head 23 of the machine to holdthe device in place thereon. The said stud 21 is provided above said screw-threaded extension with a flange 25 which bears upon the head and said flange fits within a downwardly opening recess in the mounting or bed plate 10. The post is held from endwise displacement relatively to the stud by means of a screw 26 extending through the post to cooperate with an annular groove 27 of the stud.

The post 11 is locked from turning on the stud 21 by means of a locking bolt 30 which extends downwardly through the hollow post and is screw-threaded at its lower end to an axial screw-threaded socket in the stud. The said bolt is .provided at its upper end with a rigidly secured head 31, formed with an annular flange 32 which, when the bolt is tightened, bears against the flange of the clamping nut 18 to lock the post rigid wit-h the supporting stud, the post being thus confined between the head 31 and the flange 25. When the bolt 30 is released the post, casing and bed plate carried thereby may be rotated in the manner of a turret to present either one of the spools 34 to the needle, after which the bolt is tightened to lock the parts in place. The said spools are herein shown as held or confined in place by means of short upstanding lugs 36 on the bedplate 10 which enter the lower ends of the bores of the spools and coiiperating plungers 37 having reduced extensions 38 that enter the upper ends of the spool bores. The said plungers 37 are axially movable away from the spools to permit a spool to be released from the holder, as shown in Fig. 9, and are locked in their normal spool holding positions by mechanism located principally within the casing 12, and hereinafter described. Each plunger 37 slides through an opening 39 in the bottom wall 13 of the casing and the upper reduced end of the plunger is slidable through an alined opening in the cover plate 14 and an opening in the horizontal portion 45 of the bracket 42 by which the casing cover is attached to the casing bottom. Each plunger is provided at its extreme upper end, above the cover 14, with a thumb nut 40 which is screw-threaded or otherwise detachably fixed to the plunger. The thumb nuts are adapted to be removed from the plungers preparatory to removing the casing cover.

48 designates a plate which is fixedly attached in any suitable manner to the plunger 37 within the casing 12. Said plate is provided with a downwardly off set, laterally extending projection 50 which is adapted to normally lie beneath one arm 51 of a locking pawl 52 that is pivoted as by means of a screw 53 to the casing bottom to swing hori- Zontally. In order to hold the said plate ,48 in fixed position relatively to the plunger 37, when said plunger moves endwise, said plate is provided with a guide extension 55 having an opening therein to receive a fixed vertical guide pin 56 which extends between the upper horizontal arm 45 of the bracket 42 and the casing bottom. The said pawl 52 is normally held with its locking arm 51 over the projection 50 of the plunger by means of a contractile spring 58 which is attached at one end to one side of the pawl and at its other end to a lug 59 which rises from the casing bottom and which also constitutes a stop to limit the swinging movement of the pawl under the action of the said spring.

65 designates a spiral expansion spring that surrounds the plunger 37 between the casing bottom and the said plate 48 and said spring tends to urge the plunger 37 upwardly so as to free the lower end thereof from the spool. This tendency of the spring is, however, opposed by engagement of the projection 50 of the plunger with the locking arm 51 of the pawl 52, so long as the said arm 51 lies O\ er the said projection 50. The said pawl 52 is adapted to be swun on its pivot to release its locking arm from the plunger projection and to thereby permit the plunger to rise to free the spool by means made as follows: The pawl is provided on its side remote from the locking arm .31 with an actuating arm which lies in the path of a lug 71 carried by a rocking dish 72. Said disk is mounted on a sleeve or bushing 73 which is carried by a pin 74- that is attached to a bracket 7 5 which is fixed to and extends upwardly "from the casing bot.- tom 13. The said pin is screw-threiuled and extends through an opening in the bracket and is clamped thereon by a. nut 76 which draws a shoulder on the pin against the bracket. The sleeve 73 is conlined between the bracket and the head 77 of the pin and is free to rock on the pin.

78 designates a tripping lever, one end of: which extends upwardly through an opening in the casing bottom and is provided with an apertured enlarged head 79 which is fitted over the sleeve 73 between the disk 72 and a flange S0 at the adjacent end of the sleeve. The parts thus associated on the sleeve or bushing 7 8 are held fixedly thereon by means of a clamping nut 81, which is screw-threaded to the outer end of the sleeve. ried thereby may be removed as a unit by removing the pin 74, and the arrangement provides for an elongated bearing between the rocking unit and the supporting pin which maintains the parts accurately in alinement.

The tripping lever extends downwardly from the casing alongside of the spool, as shown in Figs. 7. 8 and S). and is adapted to be swung at its free end toward and from the spool. The free end of the tripping lever is normally held away from the spool by means of av contractile spring which is attached at one end to a lug St on the head of the lever and at its other end to the casing bottom 13, as most clearly shown in Figs. 8 and f), The said lever is curved between its ends so that the free end thereof may engage the core of the spool,

when the thread is unwound therefrom,

without engagement of the intermediate part of the lever and the end flange or head of the spool, as most clearly shown in Fig. 9.

The parts of the locking mechanism and the lock release, mechanism are so related to each other that the movement of the tripping lever 78, acting through the rocking disk 72 and the lug 71 and the actuating arm 70 of the locking pawl 52, does not release the pawl from the plunger projec- Thus the sleeve and the parts cartion 50 until the free end of the tripping lever has swung inwardly far enough to contact with the core of the spool. Therefore, when the spool is filled or partially filled, with thread the movement of the tripping lever is insufficient to release the spool locking device. However, when all or practically all of the thread is unwound from the spool the tripping lever may then be moved inwardly a suflicient distance to swing the locking arm 51 of the pawl 52 entirely away from the projection 50 of the locking plunger and thereby allow the said plunger to be raised upwardly by the action of its spring 65 to release the lower end of the plunger from the spool, as shown in Fig. 9, whereupon the spool may be re moved from theholder.

In order to avoid the pawl from swinging backwardly to its normal or looking posi tion when the plunger is raised, which would prevent subsequent movement of the locking plunger to its locking position, the locking arm 50 of the pawl is herein shown as provided at its free end with a stop 90, shown as formed by turning the end of said stop arm upwardly. The said stop 90 is made of a length greater than the vertical movement of the plunger so as to be engaged by the plunger projection at the limit of the upward movement of the plunger, and the spring 58 holds the stop against the plunger projection until the plunger is again depressed, whereupon said spring restores the pawl to its locking position over the plunger projection, in which position it is arrested by the stop lug 59.

The spool may be released from the holder by the action of a key 92, shown in Fig. 6, which is adapted to be inserted through an opening 93 in the casing cover and engages a post which extends upwardly from the casing bottom through a short arcuate slot in the pawl, to guide the key bit 95 in position to engage an upstanding lug 96 formed on the heel end of the actuating arm of the pawl 52, as best shown in Fig. 2. A guide stud 97 is arranged in the swinging path of movement of the key bit and. the bit is provided with a notch which passes over said stud. In this way the stud 97 and the corresponding notch of the key bit may be variously arranged so that each key will actuate only the releasing mechanism adapted thereto. In order to adapt the releasing mechanism to spools having cores of different diameters the disk 72 which carries the lug 71 to actuate the pawl is adapted to be angularly adjusted. on the sleeve 73, so as to provide for a greater or less range of movement of said lug and the tripping lever, as desired. The said rocking member or disk is locked in adjusted position by the clamping nut 81, before described.

From the foregoing it will be seen that I have provided a spool holder and locking device therefor so arranged that after the spool has been locked in position thereon itis impossible to release the same until the thread has been used from the spool, ex cept by a person authorized to use the unlocking key 92. This unlocking key will usually be in the custody of the foreman of a shop so that individual workmen will not have access thereto.

The loss of thread by unauthorized removal of spools from sewing machines is the occasion of great loss in tailoring estabhshments where a large number of machines are used, and a device to prevent the unauthorized removal of thread from the machines by operators is a valuable adjunct to the sewing machines used in a tailoring or like establishment. The device described effectually prevents unauthorized removal of spools from their holders and at the same time enables the spools to be readily applied to the holder and to be locked thereon, and also provides ready means of removing a partially used spool of thread when occasion requires.

I claim as my invention 1. A spool holder and locking device comprising spool supporting means, locking means and lock releasing means and means whereby said locking releasing means are controlled by the presence or absence of thread on the spool.

2. A spool holder and locking device comprising spool supporting means, locking means co-acting therewith and lock releasing means comprising a member movable toward and from the core of the spool, and cooperating means to release the spool operable only when the said member contacts with the bared core of the spool.

3. A spool holder and locking device com prising spool supports, a locking pawl acting on one of said supports to lock the spool in place, manual means to release the locking pawl and means limited by the presence of thread on the spool for controlling said releasing means.

4t. A spool holder and locking device comprising spring held spool retaining means, with locking means therefor, and releasing means acting against said locking means to release the spool only when the thread has been unwound therefrom.

A spool holder and locking device comprising spring held spool retaining means, with locking means therefor, releasing means acting against said locking means to release the spool only when the thread has been unwound therefrom, and a key for also releasing said locking means.

6 A spool holder and locking device com prising a spool supporting and retaining means, and releasing means acting on the &

retaining means comprising a lever movable toward and from the spool and adapted to engage the spool.

7. A spool holder and locking device comprising spool supporting means, a spring held pawl acting thereon to lock the supporting means in place to retain a spool thereon, and a manual member movable toward and from the spool and adapted to be limited by the filled spool for releasing the pawl from the supporting means to thereby release the spool.

8. A spool holder'and locking device comprising a spring actuated plunger to support the spool, a pivoted spring held pawl having a part acting on the plunger to normally hold the latter in its spool locking position, and a manual member acting on said pawl against the action of'its spring to release said support, said member being movable toward and from the spool and operable to release the support only when it engages the bared spool core.

9. A spool holder and locking device comprising an endwise movable support to engage the bore of the spool, with spring means tending to release the support from the spool, a projection on said support, and a pawl overlying said projection to hold the support in its locking position, and means for swinging the pawl away from said projection to release said support embracing a lever swingable toward and from the spool and controlled by the absence of thread on the spool, for the purpose set forth.

10. A spool holder and locking device comprising an endwise movable support to engage the bore of the spool, with spring means tending to release the support from the spool, a projection on said support, a pawl overlying said projection to hold the support in locking position, a spring to normally hold the pawl on its locking position, co-ac'ting means on the projection and pawl to prevent retraction of the pawl under the action of its spring when the support is released, and means acting on said pawl to release it from its projection embracing a manually operable lever swingable toward and from the spool.

11.. A spool holder and locking device comprising a spring releasing support to engage the bore of the spool, a pivoted pawl having an arm acting on the support to hold the support in its locking position and provided with an actuating arm, a rocking member having a lug to engage said actuating arm to swing said pawl to its releasing position and a lever movable with said rocking member and swingable toward and from the spool on said support.

12. A spool holder and locking device comprising a base having an upstanding lug thereon to engage the lower end of the bore of the spool, an endwise movable, alined member to engage the upper end of said bore, with locking means for said member, and means for releasing said locking means, controlled by the presence of thread on said spool.

13. A spool holder and locking device comprising a base having an upstanding lug thereon to engage the lower end of the bore of the spool, an endwise movable, alined member to engage the upper end of the bore of the spool, with locking means for said member, and a lock release lever swingable toward and from and adapted for engagement with the core of the spool only when the thread is exhausted or practically exhausted therefrom.

let, A spool holder and locking device comprising a base having an upstanding lug thereon to engage the lower end of the bore of the spool, an endwise movable, alined member to engage the upper end of said bore, an inclosing casing through which said endwise movable member extends, locking means in said casing engaging said member, and lock release means embracing a lever separate from said endwise movable member extending from said casing and morable toward and from a spool supported on the device.

15. A spool holder and locking device comprising a'rotative base, a post rising therefrom, a casing carried by said post, spool holders carried by the base and easing with means in the casing to separately lock each spool on its holder, means to relcasably lock the device from rotation whereby any one of a plurality of spools supported thereby may be presented toward the work, and means controlled by the presence or absence of thread on the spool to independently release each spool locking means.

16. A spool holder and locking device comprising a rotative base, a post rising therefrom, a casing carried by the post, spool holders carried by the base and easing with means in the casing to separately lock the spools on said holders, means to releasably lock the device from rotation, whereby any one of a plurality of spools supported thereby may be presented toward the work and means to independently release each spool locking means, embracing a lock release member movable toward and from the spool and so arranged that the movement thereof toward the spool to release the lock is limited by the presence of thread on said spool.

17. A spool holder and locking device comprising spool supporting means, locking means, lock release means controlled by the presence or absence of thread on the spool and means for adjusting the lock release means to spools of different diameters.

18. A spool holder and locking device comprising a spool support, locking means llO acting thereon to lock the spools on said support, releasing means to release the looking means embracing a lever swingable toward and from the spool and adjusting means between the lever and releasing means to adapt the releasing means to spools of different diameters.

19. A spool holder and locking device comprising a spool support, a locking pawl acting thereon to hold the support in its spool locking position, a lever swingable toward and from the spool, a rocking member actuated by said pawl having a part to act on said awl to swing it to unlocking position and means to angularly adjust said rocking member for the purpose set forth.

In testimony that I claim the foregoing as my invention I aflix my signature in the presence of two witnesses, this 15th day of September, A. D. 1913.

HENRY GOLDBERGER. Witnesses:

W. L. HALL, G. E. DOWLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 0! Patents,

Washington, D. O.

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