US1172329A - Stop-motion for braiding-machines. - Google Patents

Description

S W. WARDWELL.

STOP MOTION FOR BRAiDING MACHINES.

APPLICATION FIgED Aug-s, m3.

1,172,329. Patented Feb. 22,1916.

' such as a belt pulley, and the rotation of the E' s'rnns rnrrrr once.

SIMON W. WARDWELL, OF PROVIDENCE, RHODE ISLAND, ASSIGNOE TO WARDWELI: BRAIDING MACHINE COMPANY, OF PORTLAND, MAINE, A CORPORATION OF MAINE.

STOP-MOTION FOR BRAIDING-MACHINES.

Specification of Letters Patent.

Patented Feb. 22, 1916.

Original application filed March 17, 1911, Serial No. 615,076. Divided'and this application filed August 8,

To aZZ wh0m it may concern:

Be 1t known that I, SIMON. lV. VARDWELL, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Stop- Motions for Braiding-lllaehines, of which the following is a specification.

My invention relates to braiding machines and particularly to the stopping and braking mechanism'thereof.

The present improvement consists of means for actuating the brake-ring to cause the operation of the clutch-device and to apply resistance to the moving parts as described-in my prior Patent No. 1,008,504 for braiding machine dated November 141, 1911, and my pending application, Serial No. 615,076, filed Mar. 17, 1911, from which the present case is divided.

The object of my improvement is to simplify the structure and lessen the cost of parts in section on the line A A of Fig. 1,,

lookingin the direction indicated by the arrow As described in my pending application above referred to the essential elements of the braiding machine consist of a central standard or main frame 5 on which, are

mounted two oppositely-rotating turrets adapted :to carry the yarn supplies. These parts are shown more particularly'in my U. S. Patent provided with a suitable driving-element,-

s haft i -controll'ed through a clutch-mecha; Ilism as usual.

The clutch-mechanism of-the machine is operated from the movementof abrakee ringwhichalso acts to check the rotation of the turretsafter the disconnection of the No. 1,008,501 dated Nov. 14, 1911, and are not here illustrated in detail. The turrets are rotated from a main drive-shaft Serial No. 783,806.

driving-means. he brake-ring 55 is mounted on the frame 5 of the machine and is normally held stationary and away from engagement with the turret 61 upon which it impinges. Referring to Fig. 2 of the drawings, the brake-ring 55 is preferably held on an annular flange or bearing 56 surrounding the frame 5 and 1s adapted to slide rotatively to a limited extent in the direction in;

dicated by the arrow 0, Fig. 1. The upper "portion of the ring 55 is formed on its intefor the several yarns is shown and described in my pending application, Serial No. 605,266, filed Jan. 28, 1911, and will not be here explained in detail as it is sufiicient to state that when a drop-wire is released it operates .the feeler-levers 57 as later'described. 1

Referring to Fig. 1, 60 designates a bracket which is mounted on the turret 61 and revolves with the latter about the axis of the machine in the direction indicated by the spaced around the periphery of the turret 61, preferably a number equal to the number of supplycops carried on the turret. Thefeelerdever 57 is-pivoted at- 58. in a bearing on the bracket 60 and is adapted to be tilted to bring its lower end into the path of the upstanding brake-arm 62. The arm 62 is pivoted at 63 on the base of the machine frame' 5, and preferably there is the levers, spaced equidistantly around the same number of brake-arms as there is feelerarrow 0. There are several ofthese brackets machine. The arm 62 is'connected to move the brake-ring 55 by means of a stud 6e screwed into the ring with its head 65 projecting through a slot 66 in the arm. To render the arm 62 light of weight and easy to manufacture it is constructed of sheetmetal' and its upper end is twisted at right- .angles to its body portion to form an offset head 6'7, see Fig. 2. The brake-ring 55, as

beforeexplained is mounted on the flange or hearing 56 with its interior, beveled face 68 adapted to be frictionally engaged with the beveled face 69 of the rotating turret 61. This engagement is effected by the rotary movement of the ring which causes it to be raised from its bearing 56 as now explained: Fastened to the ring is a wedge-block 71 which is formed with a beveled face 72 adapted to engage an oppositely-beveled face 73 on a projection 74 of the wedge-block 75, the latter being secured to the base of the machine frame 5. The wedge- blocks 71 and 75 are constructed and secured in position in a novel manner as now described.

Both the ring 55 and frame 5 are provided with circumferentially extending grooves, designated 76 and 77, respectively, and the wedge-blocks 71 and 7 5 are formed with projections or splines fitted to these grooves. Preferably the wedge-blocks are constructed of sheet-metal and the projections are formed by indenting the metal on one side to force it out on the other. In this way the projections 78 and. 79, see Fig. 2, are formed at the same operation as'the stamping out of the blocks through the employment ofsuitable punches and dies in a usual type of drop-press. The block 75 is secured to the base 5 by a screw 80 and the two projections 79, spaced some distance apart and fitting the groove 77, hold the block from turning on the screw. The arm 62 is preferably pivoted on the block- 75' by the rivet 63 to obviate-the necessity of tapping a hole in the base 5. The block 71 is secured to the brake-ring 55 by the same stud 64 which engages the slot in the arm 62. The shank of the stud 64 extends through a slot 81 in the Wedge-block 71 and its head is screwed against the face of the block to bind the latter against the ring 55.

The slot 81 allows the block 71 to be adjusted laterally in relation to the block 75,

poses. Theoperation of the "device is as follows: When a drop-wire is released, through the i breaking of the yarn, exhaustion of the sup-- ply, or from any other cause, it will act to tilt the first feeler-jlever 57 with which it the'brake-arms 62 and the latteris rocked in thedirection indicated by the arrow 03,

Fig. 1. This movement of the arm 62 pries the brake-ring 55 a relatively short distance around the bearing 56, and carries the wedge-block 71 against the block 75 so that their beveled faces 72 and 73 are in contact.

During this initial movement of the ring.

55 under action of the 'arm62 the stoppingmechanism "of the machine is actuated to release the driving-element from connection with the drive-shaft as fully explained in 'my pending application herein first referred machine, all acting in conjunction, the ring 55 will be raised-into contact with the turret 61. Now, as the beveled face 68 on the brake-ring comes into contact with the face 69 on the turret 61 the friction between the two will have a tendency to rotate the ring- 55 still farther to intensify the thrust'of;

the Wedge-blocks and in this waya cumulative braking force is secured. The friction of the ring 55 against the turretfil serves to check the rotation of the latter and also acts to force this turret against the other one, arranged above it but-not here shown, so that a maximum braking force is exerted on both turrets and the moving parts are quickly brought to a full stop.

It will be observed that the parts of the device herein specifically described are of a novel structure and so designed as to give maximum strength with minimum wei ,ht. Furthermore, they are particularly adaped for simple methods of manufacture at a relatively cheap cost through the use of stampdies. In addition, the arrangement of the parts and the method of assembling them provides for the least possible number of screws, bolts, pins or the like and. therefore the cost of manufacture of the whole machine is lessened to a considerable extent.

Various modifications might be made in the form and construction of my new device without departing from the 'spirit or scope of the invention.

Therefore, without limiting myself to the exact embodiment herein shown and described, what I claim is 1. In a braiding machine, thecombination with the braiding-mechanism, of stopping means for arresting the operation of the braiding-mechanism comprising a base 5 and. ring 55 mounted on the base, said base and ring formed with peripheral grooves 77 and 76, members 71 and 75 constructed of sheet-metal with lugs 78 and 79 formed by arresting the operation of said mechanism comprising a member 55 having a groove 7 6, a member 71 constructed of sheet-metal with projecting lugs 7 8 engaging the groove 76, said lugs formed by indenting the metal I on one side to force it out on the other.

3. Ina' braiding machine,-the combination with the braiding-mechanism, of means for arresting the operation of said mechanism comprlsing a base 5 formed with a groove 77, a ring 55 mounted on said base and formed with a groove 7 6, a Wedge-block 71 having lugs 7 8 engaging the groove 76, a

stud 64 for securing the b1ock 71 on the ring, a second Wedge-b1ock75 having lugs' engaging the groove 77, a screw 80 for securing the block 75 on the base 5, and an arm 62 pivoted on the block 7 5 and formed with 1 a slot 66 adapted to be engaged by the head 65 of thestud 64,

4. In a braiding machine, the combination with thebraiding-mechanism, of means for arresting the operation of said mechanism comprising a base 5, a brake-ring 55 mounted to turn on said base, a wedge-block 7 5 secured to said base, an arm 62 pivoted on 4 the block 75, a second wedge-block 71 adapted to cooperate with the block 75 When the. as

ring .is turned on the base, anda stud 64: for securing the block 71 on the ring 55,

said stud engaging the arm .62to adaptthe.

brake-ring to be moved from the arm.

. In testimony whereof I aflix my signature ,in presence of two Witnesses.

SIMON. WK WARDWELL."

WVitnesses DANIEL MCNIVEN, I HERBERT K. ALLARD.

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