US2645838A - Beaming machine - Google Patents

Description

F. L .AMBACH BEAMING MACHINE July 21, 1953 2 Sheets-Sheet 1 Filed Dec. 2o, 195o LLlllllllLLl lNvr-:NToR FRITZ LAMBACH ATTORNEY July 21, 1953 F. LAMBACH 2,645,838

BEAMING MACHINE Filed Dec. 20, 1950 2 Sheets-Sheet 2 /6 5/6 IL'II/ rm f@ una? n 4 mmm INVENTOR FRITZ LAMBACH ATTORNEY l Patented July 21, 1953 Fritz Lambach, Tenafly, N. assignor'to Robert Reiner,r Inc., Weehawken, N. J.

Application December 20, 19,50, Serial No. 201,760

11 Claims.

The present invention relates to beaming or warping machines, and more particularly to a braking system for sucha machine.

An object of the present invention is to provide a braking system for a beaming or warping machine which is balanced in its operation.y

Another object of the invention is to provide a braking system for a beamer having a swingable support carrying the beam by which braking system any undesired action on the beam support, with a tendency to swing the same downwardly is avoided'during the braking operaion.

A further object of the present invention is to provide a braking system for a beaming or warping machine by means of which a substantially uniform wear and tear o the braking means is obtained. l

Still another object of the present invention is to improve on the art of beaming or warping-l machines as now ordinarily made. Y Other objects and structural details of the invention will be apparent from the following description when read in conjunction with the accompanying drawingsV forming part of this specification, wherein:` 1

Fig. l is aside elevational view, partly in section, of a beamer equipped with a braking system, according to the invention;

Fig. 2 is a fragmentary vertical sectional view of the beamer shown in Fig. 1, wherein however, the support carrying the beam is in a different position;

Fig. 3 is a sectional View taken on line 3-3 of Fig. 2;

Fig. 4 is a diagrammatical illustrationshowing an intermediate step during the application of thebrakes; and

Fig. 5 is a diagrammatical view illustrating the vnal step during the application of the brakes.

Referring now to Figs. 1-3, IQ generally indi cates the frame of a beamer. A supporting arm I2 of a supporting cradle (the cradle has two 'supporting arms, only one or" these two arms being shown in the drawings), for carrying a beam I4 is swingably mounted on a shaft IE journalled in suitable bearings of the beamer. The sup porting arm I2 is provided with a gear segment I8 vin mesh with a pinion 20 keyed to a shaft 22, which is in mesh with a gear 26 connected with a spindle 28 carrying the hand wheel im.

As will be readily understoodthe supporting arm I2 may be swung about the shaft I6 by turning the hand wheel 30.

As best shown in Fig. 3, a braking drunuSZ may be rigidly secured to the 'flange of the beam I4 by means of screws 34. When the beamer is to be loaded the supporting arm I2 is lowered into its lowermost position, so that the beam can be rolled alongthe floor for engagement of the brake vdrum 32 attached to the beam with 'a roller 36 rotatably mounted on a stud 38 carried by the supporting arm I2, and for engagement with a Second roller'dilkeyedA to the shaft I6 and integral with a driving piniony 42, the latter comn ing intov meshwith a toothed portion 4 of the brake' drum `32. i`

In order to make the beamerfready for operation, the cradle with rthesupporting arm' I2 is swung by means of the hand wheel 3G and spindle 23, about theaxis' 'of the shaft I5, whereby the .brake drumv 3-2 is brought in'to the positionshown in Fig. 2. Inorder'to securethe supporting arm I2 in thiselevated position, a ylocking rod 45 swingably mounted on the supporting arml I2 at 48 is engaged kwith a recess 5G .arranged on a projection 52 of the .frame I9 as shown in Fig. 2. The locking rod is held in its locking position .by tightening a nut 54 engaged with a threaded -portion'of the rod46.

The` beam maybe rotated by means of a motor 56 through the medium of a belt drive 58 engaged with a pulley 60 keyed to the shaft I6 carrying the drivingpinion 42 in mesh with the toothed portion 44 of Ithe brake drum 32 attached to the beam I4. l

As best shown inFigs r1 and 2, kthe upper braking lever-:62 and a lowerfbraking lever v54 `are arrangedat opposite sides of the rotatable brake drum 32., The, upper braking lever 82 is `s'wingably. mounted-on 1a stud 66 carried bythe .frame .'Ill,r and the 'lower :braking lever is swingably mountedon astud 68 carried vby the supporting army I2; The upper braking lever 52 lis providedwith an upper braking shoe Iii swingn ably mounted kat 12 on this lever, and urged by a spring v.14 against an adjustable stop 16 also carried by the lever.` The lower braking lever 64 iS provided 'withalower braking shoe i3 swingably mounted "at on this lever, and urged by .a springf82a`gainst ank adjustable stop 84.

- The righthand vend (as viewed in Fig. 2) k of the-lower brakingl lever 54 is pivoted at 86 to the lower end ofa connecting rod 88, the upper lend "ffwh-ich is pivoted at to one arm 92 of a'double-armed actuating leverr 94 pivoted to the right hand end of the upper braking lever 52 atvSE.

Theother'arrn 98 of this 'double-armed lever-*94 jispivoted at IDU yto yther lower end'of a connecting rod-'102; theupperend of which is' pivoted at 104 to an arm |06 of a crank lever |08 keyed to a shaft I I journalled in the frame I0. The other arm II2 of this bell crank lever |08 is connected with one end of a spring |4, the other end of which is connected to a pin I|6 secured to the frame I0.

A gear segment II8 keyed to the shaft I|0 is in mesh with a pinion |23 keyed to a shaft |22 rigidly connected with 'the shaft of a torque motor |24 arranged on the outside of the beamer.

A plate |26 mounted on the inside of the frame I0 carries an adjustable stop |28 arranged for cooperation with the right hand end of the actuating lever 94. Furthermore, this plate |26 carries a second adjustable stop |30 arranged for c00p` eration with the braking lever 62.

The operation of the braking system of the beamer according to the invention is as follows:

When the braking elements of the braking system are in their releasing position, the actuating lever 94 is in a substantially horizontal :position as shown in Figs. 1 and 2. Therighthand end of the arm 92 of this actuating lever 94 rests on the stop |28 whereby the upper braking shoe I0 mounted on the upper vbraking lever 62 is held f at a distance from the brake drum 32, and the lower braking lever 64 is prevented from falling downwardly.

During the lifting of the `beam |4 by means of a swinging of the supporting arm I2 about the shaft |6 from its lowermost position through the intermediate position shown in Fig. l into its uppermost position shown in Fig. 2, the lower braking lever 64 connected to the supporting arm IZ at '68, and connected to the connecting rod .88 at 86 is brought into the position shown in Fig. 2, wherein the lower braking shoe I8 is at a slight distance from the surface of the brake drum 32. The upper braking lever 62 swingably mounted on the frame I0 at 66 and pvoted to the actuating lever 94 at 96 is held in the position shown in Figs. l and 2 irrespective of whether or not the supporting arm I 2 is in its lowermost position or in its uppermost position, as the actuating lever 94 in turn is held in its lposition by the stop |23, and rby the yconnecting rod |02 Vconnected through the bell crank lever |.08 and the gear segment ||8 with the torque motor I;24. YIn this position of the `upper braking lever 62, the upper braking shoe I0 is also at a slight distance from the brake drum 32 when the latter is in the operative position shown in Fig. 2. Upon exciting of the torque motor '|24 for causing a braking effect of the braking system, the pinion |20 is rotated in the direction of the arrow A, whereby the connecting rod |02 is pushed downwardly in the direction of the arrow B against the action of the spring II4. Due to the floating arrangement of the pivot 96 and the abutment of the arm 92 of the actuating lever 94'against the -stop |28, this downwardmovement of the connecting rod |02 in the .direction ofthe arrow C, results in a downward movement of the pivot 96 in the direction of the arrow C (see Fig. 4) whereby at rst the -upper brake shoe `:'I0 is brought into engagement with the brake drum 32, the lower brake shoe 'I8 still remaining at a slight distance from the surface of the brake drum. During this step, the pivot 90 acts as a fulcrum.

The torque motor |24 remaining under current continues to urge the connecting rod |02 downwardly in the direction of the arrow B so that now, upon engagement of the upper brake shoe 10 with the brake drum 32, the pivot 96 remains in its position causngga swinging movement of the actuating lever 94 about this pivot 96 with the `result of an upward movement of the pivot in the direction of the arrow D (see Fig. 5), so that in turn the connecting rod 88 is lifted and the lower brake shoe 'I8 is brought into engagement with the brake drum 32. During this step the pivot 96 acts as a fulcrum.

Now both brake shoes I0 and 18 are in engagement with the brake drum 32, and as long as the torque motor |24 is excited, both brake shoes are applied against the brake drum, the point between the pivots 90 and 96 acting as a fulcrum.

Upon a subsequent de-energization of the torque motor |24, the spring I|4 acting on the bell-crank lever |08 causes a return of the ele- .or releasing position. The connecting rod |02 is lifted whereby at first the braking lever 64 with the brake shoe I8 is released, as during this step the pivot 96 acts as a fulcrum whereupon the braking lever 62 with the brake shoe 10 is released, as upon engagement of the arm 92 of the actuating lever 94 with the stop |28, the pivot 90 acts as a fulcrum.

Above described successive applications of the brake shoes 1.0:and 18, and successive releases of these brake shoes taking place within a short period of time, assures that there is at no time a tendency of the lower brake shoe to lift the beam out of its bearings.

On the other hand, during the braking operation proper, a balanced braking effect is obtained by the action of the upper and lower brake shoes at opposite sides of the brake drum 32.

Furthermore, if there should be an unequal wear and tear on the upper and lower brake shoes 'i0 and 'I8 so that, for example, after a period of time of operation of the beamer. the upper braking lever 62 must be swung to a greater extent about the pivot 0,6 for engagement of the brake shoe 'I0 with the brake drum 32, a substantially uniform application of both brake shoes 'l0 and 'I8 is assured after the engagement of both brake shoes with the brake drum 32 as the fulcrum point between the pivot points 90 and 96 coming into effect during this last part of the braking operation is not xed due to above described oating arrangement of the pivots 90 and 96. If, for any reason whatsoever, during the release of the braking shoes, a jamming should occur in one of the joints of the linkage of the braking system. for example, in the joint 96. thus preventing a proper swinging movement of the actuating lever 94 relative to the upper braking lever 62, the braking lever 62 is prevented from excessive lifting by an abutment against the stop |30. This abutment eliminates an undesired lifting of the lower braking lever 64 through the medium of the connecting rod 88 to such an extent that a reapplication of the lower brake shoe I8 takes place.

Moreover, as will be readily understood, the swingable connection of the lower braking lever 64 with the supporting arm I2 at 68 permits on the one hand, a displacement of the braking shoe 18 during the loading or unloading of the beamer to such an extent that the lower brake shoe 18 does not interfere with the beam or brake drum attached thereto, and, on the other hand, permits the arrangement of two braking shoes at opposite sides of the brake drum 32 for obtaining a balanced braking operation, and preventing a one sided action on the beam by a single upper braking shoe which, in turn, results in an undesired downward pressure acting on the swingable supporting arm I2.

As stated above, the supporting ycradle of' a beamer is customarily equipped with two supporting arms, of which only one, the arm I2 is shown in the drawings. Furthermore, in 'beamers of this type, there'are customarily two brake drums attached to the beam for engagement with the rollers of the cradle. It is understood that a braking system similar to the'braking systemfdescribed above for cooperation withthe braking drum 32, may b e arranged in the beamer for cooperation with the second braking drum attached to the beam, and not shown in the drawings, f j

A mechanism may be provided for connecting both braking systems with each other sothat upon energization of the torque motor |24, the brake systems at both sides ofthe beamer are actuated simultaneously.

I have described a preferred embodiment of my invention, but it is understood that this disclosure is for the purpose of illustration, and that various omissions or changes in shape, proportion and arrangement of parts, as Well as the substitution of equivalent elements for those herein shown and described may be made without departing in any way from the spirit and scope of this invention as set forth in the appended claims.

What I claim is: Y y

l. A beaming machine comprising' in combination: a rotatable brake drum for connection with a beam, a rst braking lever including first braking means for cooperation with said brake drum, a second braking lever including second braking means for cooperation withsaid brake drum, said iirst and second braking levers being arranged at opposite sides of said brake drum, one end portion of each of said braking levers being yswingably mounted on the machine, ank kactuating mechanism connected with the other end 'portions of said braking levers for actuating same, and controlling means in said actuating mechanism for causing successively an engagement of said first braking means with said brake drum and, thereupon, an engagement of said secondY braking means with said brake drum in response' to the engagement of said rst braking means with the brake drum. f v

2. A beaming machine comprising in combination: a rotatable brake drum for connection with a beam, a first braking lever including nrst braking means forcooperation with said brake drum, a second braking lever including second braking means for cooperation with said brake drum, said rst andsecond braking levers being arranged at opposite sides of said brake drum, pivotal connections between oneend portion of each of said braking levers and the machine, at least one of said pivotal connections of the braking levers being movable relative to the` axis of said brake drum, means associated with said movable pivotal connectionl for displacing same, an actuating mechanism connected with the other end portions of said braking levers for actuating same, and controlling means in said actuating mechanism for causing successively an engagement of said first braking means with said brake drum and, thereupon, an engagement of in response to the engagement of said nrst braking means with the brake drum.

3. A beaming machine comprising in combination: a rotatable brake drum for connection with a beam, an upper braking lever including upper braking means for cooperation with said brake said upper and lower braking levers being -arranged at opposite sides of said rake drum, a support for carrying the beam, said support being swingably mounted on the`y machine, setting means associated with said support for moving same from a lower inoperative position into an upper yoperative position, one end portion of said upper "braking lever being swingably mounted on a stationary portion of the machine; one end pnrtion of said lower braking lever being swingably mounted on'said swingable support, vand an actuating mechanism connected with the other end portionsof said braking levers for actuating same.

4. A beamingmachine comprising in combination: a rotatable brake drum for connection with a beam, an upper braking lever including upper braking means for cooperation with said brake drum, a lower braking leverv including lower braking means for cooperation with said braking drum, said upper and lower braking levers being arranged at opposite sides of vsaidbrake drum, a support for carrying the beam, said support being swingably mounted *on kthe machine, setting means associated with said support for moving same from a lower inoperative position into an upper operative position, one end portion of said upper braking lever being swingably mounted on a stationary portion of the machine, one end portion of said lower braking lever being swingably mounted on said swingable support, an actuating mechanism connected with the other end portions of said braking levers for actuating said second braking means with said brake drum drum, a lower braking lever including lower braking means for cooperation with said brake drum,

same, and controlling means in said actuating mechanism for causing successively an 'engagement of said rst braking means with said brake drumand, thereupon, an engagement of said second braking means with said brake drum in response to the engagement of said rst braking means with the brake drum. "5. A beaming machine comprising in combination: a rotatable brake drum for connection with a beam, Va first braking lever including first braking means for cooperation' with said brake drum, a second braking lever including second braking means for cooperation with said brake drum, said first and second braking levers being arranged at opposite sides of said'brake drum, one end portion Vof each of.v said vbraking leversfkbeing swingably mounted on the machine, a doublearmed actuatingelement pivotally connected, at an intermediate point thereof, 'with the other end portion of said first braking lever, a connecting member pivoted at one of its ends to the other end portion of said second vbraking lever and at its otherend to one arm of said doublearmed actuating element, an actuating' device operativelyconnected with the other arm of said double-armed'actuating element, and a stop arranged on the machinefor cooperation with said first braking lever so as to limit the releasing end position of the latter.

6. A beaming machine comprising in combination: a rotatable brake drum for connection with a beam, a rst braking lever including first i kbraking means for cooperation with said brake drum, a second braking lever including second braking means for cooperation with said brake drum, said first and second braking levers being arranged at opposite sides of said brake drum, one end portion of each of said braking levers being swingably mounted on the machine, a double-armed actuating element pivotally connected, at an intermediate point thereof, with the other end portion of said first braking Jever, 7a ,connecting member pivoted at one of its ends to the Iother end portion of said Vsecondgbrakinglever vand at its other end to one arm of said double-armed actuating element, an 'actuating :device loperatively connected with theother Varm of said double-armed actuating element, and controlling abutting means arranged on-the machine for cooperation with said irst mentioned .arm of said double-armed actuating element soas to hold saidrpivotal connection between said first mentioned arm and said connecting member temporarily in its position until,-upon an actuation 'of vsaid actuating device, the nrst braking means has been brought into engagement with' the brake drum.

7. A` beaming machine comprising in combination: la`rotatable-brake -drum for connection with a lbeam/a rst braking lever including first braking means for cooperation with said brake drum, a second braking levery including second braking means for cooperation with said brake drum, said rst and second braking levers being arranged'at opposite .sides of saidbrake drum, one end portion of -eachof said braking levers being pivotally connected with the machine, at least one of said `pivotal connections of the braking levers being movable, lmeans associated with said movable pivotalconnection for displacing same, a double-armed actuating element pivotally connected, at an intermediate vpoint thereof, with the other :end portion of said `first braking lever, a connecting member pivoted at one of its ends to the other end portion of said second 'braking lever and at its other end to one arm of said doublearmed actuating'element, an actuating device operatively connected with 'the other arm vof said double-armed actuating elementfand controlling abutting means arranged on the machine for cooperation with vsaid rst mentioned arm of said double-armed actuating .element so as to hold said 'pivotal connection between said first mentioned arm and said connecting member temporarily in its position until, upon an actuation of -said actuating device, the rst braking Ymeans has :been brought into engagement 'with the brake drum.

8. A beaming machine comprising in combination: a rotatable brake drum for connection with a beam, Van -upper braking lever including upper braking means .for cooperation rwith said brake drum, a lower 'braking lever including lower braking means for cooperation with said brake drum, said upper and ,lower braking levers being arranged at opposite sides of said brake drum, a supportfor carrying the beam, said support being swingably mounted Von the machine, setting means associated with said support for moving same from a lower inoperative position into an upper operative position, one end portion of said upper braking lever being swingably mounted on a stationary portion ofthe machine, one end portion of said lower braking lever being swingably mounted on saidswingable support. a doublearmed actuating element pivotally connected at an vintermediate point thereof with the other end portion of said rst braking lever, a connecting member pivoted at one of its ends to the other end portion of said second braking lever` and at its other end to one arm of said double-armed actuating'element, and an actuating device operatively connected with the other arm of said double-armed actuating element.

9. A beaming machine comprising in combination: a rotatable rbrake drum for connection with a beam, an upper braking lever including upper braking meansfor cooperation with said brake drumpa. lower braking lever including lower braking means for 'cooperation `with said brake drum, said upper and lower braking levers being arranged at opposite sides of said brake drum, a support for-carrying the beam, said support being swingably mounted on the machine, setting means associated with said support for moving same from a lower inoperative position into an upper operative position, one end `portion of said upper braking lever being swingably mounted on a stationary portion of the machine, one end portion of said lower braking lever being` swingably mounted on said swingable suppOrt, a doublearmedl actuating element pivotally connected at an intermediate point thereof with the other end portion of said rst braking lever, a connecting member pivoted at one of its ends to the other end portion of :said second braking lever and at its other end to one arm of said double-armed actuating element, and controlling abutting means arranged on the machine for cooperation with said Iirst mentioned arm of said double-armed actuating element so as to holdsaid pivotal connection between said rst mentioned arm and said connecting member temporarily in its position until, upon an actuation of said actuating device, the first braking means has been brought into engagement with the brake drum.

10. In combination with a beaming machine as claimed in claim 6, a stop arranged on the machine for cooperation with said rst braking lever so as to limit the releasing end position of the latter.

11,'In combination with a beaming machine as claimed in claim 9, a stop arranged on the machine for cooperation with said upper braking lever so as to limit the releasing end position of the latter.

FRITZ LAMBACH.

References Cited in the file of this patent UNITED STATES PATENTS Schnell July 31, 1945

Images