US1519809A - Hand brake for spooling machines - Google Patents

Description

Dec, 16 1924.-

s. DANILOFF ET AL HAND BRAKE FOR SPOOLING MACHINES Filed June .33"

Patented Dec. 16, 1924.

UNITED STATES PATENT OFFlCE.

SERGE DANILOFF, 0F LOWELL, AND ROBERT E. NAUMBUEG, OF WINCHESTER, MASSA- CHUSETTS, ASSIGNORS TO SACO-LOWELL SHOPS, OF BOSTON, MASSACHUSETTS, A

CORPORATION OF MASSACHUSETTS.

HAND BRAKE FOR SPOOLING MACHINES.

Application filed June 20, 1922.

T 0 all whom it may concern:

Be it known that we, SERGE DANILOFF and ROBERT E. NAUMBURG, citizens, respectively, of Russia and of the United States, residing, respectively, at Lowell, in the county of Middlesex and State'of Massachusetts, and at Winchester, in the county of MiddleseX and said State, have invented a new and useful Improvement in Hand Brakes for Spooling Machines, of which the following is a specification.

This invention relates to brakes for stopping the rotation of individual spools or other thread carriers in spooling or similar machines.

hen a thread breaks or an end runs out in a spooling machine it is customary for the machine attendant to stop the rotation of the spool by bearing on the top of it with his left hand. He usually carries a knotter on this hand and while he holds the spool stationary, he finds, with his right hand, the ends to be joined, brings them to the kno-tter, ties or knots them, and then releases the spool. The high speeds at which spooling machines are now operated makes it diflicult for the workman to stop the rotation of a spool in the manner just described without burning his hand. It has been proposed heretofore to obviate this difficulty by equipping spooling machines with some form of hand brake with which the rotation of any individual spool can be stopped at will. These brake mechanisms have not gone into use, however, so far as we have been able to learn, due, apparently, to practical difliculties in their design, particularly the fact that they are awkward to operate and expensive to manufacture.

The present invention has for its chief object to devise a brake mechanism for the purpose above described which will be convenient to operate, can be manufactured economically, and which generally will satisfy the practical requirements of a mechanism of this character.

The nature of the invention will be readily understood from the following description when read in connection with the accompanying drawings, and the novel features will be particularly pointed out in the appended claims.

Referring now to the drawings,

Serial No. 569,666.

Figure 1 is a transverse cross sectional view through the rail and adjacent parts of a spooling machine showing, in side elevation, a brake mechanism constructed in accordance with this invention; and

Fig. 2 is a cross sectional plan View on the line 22, Fig. 1.

In the drawings 2 designates a spool of the common type mounted on a spindle 8 carrying a whorl or pulley 4, the spindle being supported in a spindle base 5. This base is secured in the spindle rail 6 by means of a nut 7. The usual tape guard is shown at 8. All these parts are constructed and arranged in the usual manner. Normally the spool rests on the upper surface of the whorl 4 and is rotated rapidly by its contact with the whorl.

The brake mechanism shown comprises an annular plate 10 which encircles the whorl 4 and is supported immediately below the lower end of the spool 2. This plate constitutes the braking element per se, and its upper face is grooved or recessed to receive a facing 12 of leather, felt, asbestos, or other suitable material. In order to support and guide the plate 10 it is formed at its front and rear edges with U-shaped ears 13 and 14, respectively, in each of which upper and lower holes are punched to receive guiding fingers 15 and 16, respectively, that project upwardly from the annular base member 17. This member is clamped securely on the upper surface of the rail 6 between the tape guard 8 and the nut 7.

The brake 10 is operated by means of a lever 18 which is located immediately behind the spool 2 and is fulcrumed on a horizontal rod 19 that extends longitudinally of the machine frame parallel to the spindle rail and supports the entire series of brake levers. The lever comprises a handle 20, projecting up above the top of the spool 2, and a lower bifurcated or forked section in cluding arms 21 and 22, respectively, which project forward substantially to the axis of the spool and straddle the whorl 4. The ring 10 has two lateral ears or projections 23 and 24 which rest respectively on the arms 21 and 22, the upper edges of these arms being rounded, as best shown in Fig. 1, at their points of contact with said ears. A clamp 25 secured to the lever 18 by screws,

holds; the lever on the rod 19, the clamp being slotted at its: upper side to receive a bolt or screw 26 which performs the double function of holding the lever in pro-per alinement with the spool 2, and also of limit ing the range of the swinging movement of the lever on the rod.

Normally the parts are held by gravity in the positions in which they are shown in full lines in Fig. 1. When the thread or end on the spool 2 breaks, the attendant pushes the handle 20 backwardly, with his left hand, directly away from the front of the machine, thus causing the arms: 21 and 22 to raise the brake l0 and bring the facing 12 in contact with the lower end of the spool '2. A continuation of this movement lifts the spool of]? the driving surface of the whorl 4t and the friction of the spool on the facing 12 stops the spool. This action may be hastened by the operator pressing lightly on the top of the spool with the same hand that operates the brake. It should be noted that the handle is located so close to the spool that it is entirely convenient for the work man to bear on the top of the spool at the same time that he is pushing the handle backwardly. He usually carries a knotter on his left hand and, while he continues to hold the lever '20 back, he finds the broken ends of the thread with his right hand, brings them to the linotter, knots the ends together, and then releases the handle 20. The parts immediately return to their full line position, Fig. 1, under the influence of gravity, and the spool begins to rotate again.

It will now be appreciated that the invention provides a very simple form of inclividual brake mechanism for the spools of spooling and similar machines. In the arrangement-shown all the parts can be made by the punch and die process so that the mechanism can be manufactured very economically. The fact that the hand levers 18 may, if desired, be slipped on the end of the rod 19 and moved along to the desired relationship to their respective spools is an advantage in assembling. Attention is particularly directed to the fact that the motion required to operate the brake is entirely natural and convenient, it being simply a movement directly backward away from the workman. The mounting of the brake 10 so that it moves in a direction parallel to the axis of the spindle avoids any tendency to bind, and the guiding devices for this part hold it firmly in its proper position.

While we have herein referred to the brake as adapted particularly for use on spools and spooling machines, it will be underst'ood that the invention is also applicable to other forms of thread or yarn packages. It is desired therefore that the tion in mind.

Having thus described our invention, what we desire to claim as new is: I

1. In a spooling machine, the combination of a spindle for supporting a spool, a. brake mounted to engage the lower end of said spool, and means supporting -said brake for sliding movement in a direction parallel to the axis of said s-pindle'into and out of engagement with the spool.

2. In a spooling machine, the combination of a spindle for supporting a spool, a brake including a plate mounted to engage the lower end of said spool, means for guiding said plate for movement in a path parallel to the axis of said spindle, and means for raising said plate intoengagement with said spool. v I

In a spooling machine, the combination of a spindle for supporting a spool, a. brake including a plate mounted to engage the lower end of said spool, and means for raising said plate intoengagement with said spool, said means including a lever mounted for movement toward and from the front of the machine.

4. In a spooling machine, the combination of a spindle for supporting a spool, a brake for said spool, and means for operating said brake including a lever fulcrumed behind the spool and arranged to have its operative movement in a direction toward and from the front of the machine.

5. In a spooling machine, the combination of a. spindle for si'ipportin aspool, a brake for said spool, and means or operating said brake including a lever having a handle positioned adjacent to the upper end of the spool and movable toward and from the front of the machine, whereby the workman may operate the brake with one hand and simultaneously bear on the top of the spool with the same hand.

6. In a. spooling machine, the combination of a spindle rail, 21. spindle mounted in said rail, a. W horl rotatable with said spindle, said spindle and whorl being adapted to support a spool, a brake mounted to engage the lower end of said spool, an aminlar base plate secured on said rail under said whorl and having upright fingers on which said brake is guided for movementparallel to the axis of said spindle, and means for operating said brak 7 In a. spooling machine, the combination of a spindle rail, a spindle mounted in said rail, a. whorl rotatable with said spindle, said spindle and whorl being adapted to support a spool, a brake mounted to engage the lower end of said spool, and an operating lever "for said brake fulcrumed back of said spool and comprising a handle movable toward and from the front of the machine and a forked portion straddling said whorl and engaging said brake.

8. In a spooling machine, the combination of a spindle rail, a spindle mounted in said rail, a whorl rotatable with said spindle, said spindle and whorl being adapted to support a spool, a brake mounted to engage the lower end of said spool, a rod extending parallel to said rail and located back of the spindle, and an operating lever for said brake fulcrumed on said rod.

9. In a spooling machine, the combination of a spindle, a whorl rotatable with 'said spindle, said spindle and whorl being adapted to support a spool, a brake mounted to engage the lower end of said spool, a stationary base plate having upright fingers on which said brake is guided for movement in a path parallel to the axis of said spindle, and an operating lever fulcrumed back of the spool and comprising a handle movable toward and from the front or the machine and a forked portion arranged to engage said brake to operate it.

In testimony whereof we have hereunto signed our names to this specification.

SERGE DANILOFF. ROBERT E. NAUMBURG.

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