US1946534A - Automatic stop for machine belt type - Google Patents

Description

Feb. 13, 1934. H. G. KELLOGG 1,946,534

AUTOMATIC STOP FOR MACHINE BELT TYPE Filed July 14, 1930 3 Sheets-Sheet l INVENTOR ATTORNEY/8' Feb. 13, 1934. H. G. KELL-OGG 1,946,534

AUTOMATIC STOP FOR MACHINE BELT TYPE Filed July 14, 1930 3 Sheets-Sheet 2 o w W m m N. W n w Lmll QM A \w MWWA 1.. a v 1 a W W N \W QMQ QNAQ W m w Nb flm i m R mm f \w 4 2. NW & m \wsm g m g MW H Feb. 13, 1934. H. G. KELLOGG 1,946,534

AUTOMATIC STOP FOR MACHINE BELT TYPE Filed July 14, 1930 3 Sheets-Sheet 3 I win INVENTOR flame) 6. XlZflj/ wm mmw ATTORN YA? Patented Feb. 13, 1934 UNITED STATES PATENT AUTOMATIC STOP FOR MACHINE BELT TYPE Application July 14, 1930. Serial No. 467,917

10 Claims.

This invention relates generally to power actuated machines and has particular reference to the control means therefor.

While the invention is capable for use in connection with various types of machines, it finds particular utility when used in connection with a metal working machine for fashioning molding or like strips to a predetermined contour and accordingly the invention is illustrated herein as applied to such a machine.

Consistent with the present state of the art the machine, illustrated herein, is designed to form the molding strips by advancing a flat strip of metal or other suitable material through a series of forming rolls to progressively change the cross-sectional contour thereof, and to this end the invention consists in the provision of improved means for automatically interrupting or stopping the feeding of the strip after a selected length thereof has been fashioned permitting the latter to be severed from the remaining portions of the strip.

The several objects, advantages and novel details of construction of the invention will be made more apparent as this description proceeds especially when considered in connection with the accompanying drawings wherein:

Figure 1 is a fragmentary top plan view of a machine constructed in accordance with this invention.

Figure 2 is a fragmentary side elevational view of a portion of the machine illustrated in Figure 1. Figure 3 is a fragmentary top plan view of the automatic stop mechanism with certain parts broken away for the sake of clearness.

Figure 4 is an enlarged fragmentary plan view of the clutch actuating mechanism.

Figure 5 is a side elevational View of the construction illustrated in Figure 4. I

Figure 6 is an end elevational view partly in section of the construction shown in Figure 4.

Figure 7 is a cross-sectional View taken on the line '77 of Figure 3.

Figures 8 and 9 are fragmentary detail views of a portion of the mechanism shown in Figure 3.

Figure 10 is a horizontal sectional view taken substantially through the center of the clutch mechanism showing the clutch in an engaged position.

Referring now particularly to the drawings wherein like reference characters indicate corresponding parts throughout the several views, it will be noted that reference numeral 10 indicates the bed of the machine upon which are mounted a series of sets of driven rolls which advance a flat metallic strip or ribbon and during this advancement, fashions the same to a predetermined cross-sectional contour. The machine illustrated herein comprises several sets of forming rolls 11 provided with horizontal axes and driven in timed relation to each other by means of a series of intermeshing gears 12 extending longitudinally of the machine at one side thereof.

For driving the train of gears 12 to rotate the various forming rolls 11, I provide a driven shaft 13 extending transversely of the machine and having a gear 14 secured thereto adapted to mesh with the comparatively large gears 15 and 16 arranged upon opposite sides of the gear 14. The gears 15 and 16 are secured to the shafts 17 for driving the train of gears 12 and as a consequence the forming rolls 11. The gearing 14, 15 and 16 is commonly known in the art as reduction gearing and the arrangement is such as to drive the forming rolls 11 at a reduced speed from the driven shaft 13. Surrounding the driven shaft 13 and capable of rotation relative thereto is a driving member 18 having a portion 19 constituting one element of a clutch 20 and having an annular portion 21 forming a Wheel and adapted to be driven by a suitable source of power (not shown).

The cooperating element of the clutch 20 is in the form of a member 22 secured to the shaft 13 and having a radial flange 23 adapted to frictionally engage the rear surface of the clutch element 19 in such a manner as to be driven by the latter and thereby establish a driving connection between the member 18 and driven shaft 13. The mechanism illustrated herein for effecting a frictional engagement between the clutch parts comprises an annular ring 24 slidably mounted upon the member 22 and adapted to engage the front side of the frictional clutch part 19. The arrangement is such that the frictional clutch part 19 is arranged between the flange 23 and the slidable ring 24 so that when the ring 24 is moved in a direction toward the radial flange 23, the latter will be frictionally coupled to the driving member 18 and owing to the fact that the member 22 carrying the radial flange 23 is keyed to the shaft 13, the latter will be driven to effect an operation of the forming rolls 11.

For sliding the ring 24 upon the member 22 in the manner specified above, the following mechanism is preferably provided: Slidably mounted upon the shaft 13 beyond the member 22 is a sleeve 25 pivotally connected by means of the links 26 to the dogs 27 which are in turn pivotally connected to the radial flange 23 by means of links 28. The dogs 27 are provided with inwardly extending portions 29 adapted to fulcrum upon a ment of the block 45.

plate which in turn is slidably mounted upon the clutch member 22 adjacent the end thereof. The plate 30, as shown particularly in Figure 3 of the drawings, is connected to the ring 24 by means of a series of pins 31 having the forward ends anchored in the ring'24 and the rear end portions thereof slidably engaging suitable apertures in the flange 23 and plate 30. The pins 31 are held in assembled relation with the plate 30 by means of suitable stops 32 threadedly engaging the rear ends of the pins and adapted to abut the rear face of the plate 30. Surrounding the pins 31 intermediate the flange 23 and ring 24 are coil springs 33 having one end abutting the flange and the opposite end engaging the ring 24 tending to move the latter forwardly out of frictional engagement with the clutch part 19. The above arrangement is such that when the sleeve 25 is moved rearwardly or in the direction of the arrow in Figure 3, the portions 29 on the dogs 27 move forwardly permitting the springs 33 to move the ring 24 away from the clutch member 19 to eifect a disengagement of the clutch 20.

In order to actuate the sleeve 25 to disconnect the drive between the members 13 and 13, I provide a reciprocable shaft 34 extending axially through the shaft 13 and having the inner end thereof secured to the sliding sleeve 25, as illustrated by the reference numeral 35. The outer end portion of the shaft is connected for autobed of the machine by means of the bolts 41.

Surrounding the shaft 34 between the projections 38 and the member 40 is a spring 42 having the rear end abutting a sleeve 43 which in turn is secured to the shaft 34 in a position to engage the projection 38. The outer end of the spring is likewise supported by a sleeve 44 threaded upon the shaft 34 so as to be capable of adjustment to vary the tension of the spring 42. The arrangement is such that the spring 42 normally tends to move the slide 3'7 together with the shaft 34 inwardly for actuating the clutch mechanism 20 in a manner hereinbefore set forth.

Movement of the shaft 34 and slide 3'? in a direction to throw out the clutch 20 by the spring 42 may be controlled by means of the following construction: Slidably mounted upon the bed of the machine and having a tongue and grooved engagement with the member 3'7 is an elongated block 45 having a pair of levers 46 and 4'7 pivoted thereto as illustrated in Figure 3 of the drawings. The free end of the lever 47 is substantially V-shaped and is adapted to engage in a corre spondingly shaped groove 48 formed in a guide member 49 which in turn is rigidly but adjustably secured to the bed of the machine by means of the bolts 50. The construction is such that when the parts are in the positions illustrated in Fig ures 3 and l, the end of the lever 47 is in engagement with the groove 48 thereby preventing move- The lever 46 on the other hand is provided with a shoulder 51 intermediate the ends thereof adapted to engage a cooperating shoulder 52 projecting from the member 37 and thereby lock the latter member from movement by the spring 42 when the parts are in the position illustrated in Figure 3 and to lock the same to the member 45 for movement therewith as a unit when the parts are in the position shown in Figure 4. As shown in Figure '7, in order to ctuate the lever 47 to disengage the same from the groove 48, I provide a member 53 slidably mounted upon the bed and having a tongue and grooved engagement with the opposite side of the block 45. Referring now more in detail to Figure 3, it will be observed that the member 53 has a slot and pin connection with the block 45 permitting a slight relative movement therebetween. The slot and pin connection, aforesaid, comprises a pin 54 projecting laterally from the member 53 and engageable in an elongated slot 55 formed in the member 45 and is adapted to assume a position within the slot spaced from the front wall 56 of the latter when the parts are in the position illustrated in Figure 3. Extending upwardly from the member 53 is a projection 5'7 arranged adjacent to the free end of the lever 47 in such a manner as to engage the latter and move the same out of the groove 48.

With the construction as thus far described and assuming that the parts of the throw-out mechanism are in the position illustrated in Figure 3 and that the lever 46 is moved to the dotted line position illustrated in this figure wherein the cooperating shoulders 51 and 52 on the lever 46 and member 37, respectively, are out of engagement the latter member together with the shaft 34 will be moved rearwardly by the spring 42 relative to the member 45 to the position shown in Figure 4. Movement of the member 37 to the position illustrated in Figure 4, as specified above, effects a corresponding movement of the rod 34 which disconnects the clutch in the manner hereinbefore set forth.

In order to actuate the clutch throw-out mechanism automatically and at predetermined intervals, the following construction is provided: As shown particularly in Figure 1, one of the forming roll actuating shafts, preferably the end shaft, is extended laterally beyond the bed of the machine and has secured thereto a suitable pulley 62. The pulley 62 is adapted to drive a second pulley 63 journaled on a bushing 64 which in turn has the opposite ends slidably engaging the frame members 65. The driving connection between the pulleys is efiected by a continuous belt 66 extending around the pulleys and having a projection 67 thereon adapted to engage a dog 68 secured to a rockshaft 69. The rockshaft 69 is journaled upon the machine as illustrated at '70 and has secured thereto a lever '71 which in turn is connected to the free end of the lever 46 by means of a flexible cable '72. The construction is such that upon each complete revolution of the belt 66, the projection 6'7 will engage the dog 68, rock the shaft 69 which in turn rocks the lever '71 to exert a pull upon the flexible cable '72 attached to the free end of the lever 46. A pull on the flexible cable '72 in the direction of the arrow illustrated in Figure 1 moves the lever 46 to effect a disengagement of the shoulders 51 and 52 and thereby actuate the throw-out mechanism in the manner just described.

Thus from the foregoing it will be observed that the belt 66 controlling the operation of the clutch throw-out mechanism is driven in timed manner hereinbefore set forth to actuate the throw-out mechanism to stop the machine and permit the end portion of the strip to be severed from the remaining portions thereof. The length of the strip advanced prior to stopping the machine may be varied in different ways but as herein shown depends upon the length of the belt 68. In other words, by sliding the pulley 63 upon the frame 65 and by interchanging the belts accordingly the intervals at which the machine is automatically stopped may be varied with the result that different lengths of strips may be secured.

As shown in Figure l, I provide manually operable mechanism for re-engaging the clutch after the throw-out mechanism has been actuated. This means comprises a rail '74 pivotally connected to the bed of the machine by means of suitable links '75. One of the links '75 is in the form of a bell crank lever having a slot '76 in one end thereof adapted to receive a pin '77 projecting downwardly through the bed of the machine and secured to the sliding member 53. The arrangement is such. that when the rail '74 is moved in the direction of the arrow illustrated by the referencecharacter '78 in Figure l, the bell crank lever engages the pin 7'7 and moves the member 53 rearwardly until the pin 54 engages the rear wall 56 of the slot 55. During this latter movement of the member 53 the pin 57 engages the lever 47 and rocks the same against the action of the spring 60 out of engagement with the recess 58 in the stationary guide 49 permitting the members 45 and 53 to move to the positions illustrated in Figure 4 upon continued operation of the manually operable mechanism. As shown in Figure 4 the step 60 on the member 37 arrests movement of the members 45 and 53 in a position wherein the cooperating shoulders 51 and 2 are opposite each other permitting the spring 62 to move the lever 46 in a direction to engage these shoulders and thereby lock the members 37 and 45 together. From the above construction it will be observed that movement of the rail in the opposite direction designated by the arrow 78' in Figure 1 effects a forward movement of the members 37, 45 and 53 to their original positions illustrated in Figure 3.

While in describing the stop mechanism 36 particular stress has been placed upon the fact that this stop mechanism functions automatically to throw-out the clutch and interrupt the operation or" the machine, the present invention contemplates the provision of means for releasing the tension of the spring 42 and thereby permit actuation of the stop mechanism by manipulation of the rail '74 with comparatively little effort. In order to release the tension of the spring, as specified above, I provide the following mechanism. Secured to the rod 34 in advance of the sleeve 44 is a suitable abutment '79 slidably engaging a plate 80 rotatably mounted upon the member 40 and carrying an upwardly projecting stop 81 in advance of the abutment '79. The stop 81, as shown particularly in Figure 8, is arranged upon the plate 80 eccentrically relative to the axis thereof and is adapted to engage the abutment '79 upon rotation of the plate to either compress the spring 42 or to relieve the tension thereof depending upon the direction of rotation of the plate. For rotating the plate a suitable handle 82 is arranged below the member 40 in a position where it may be conveniently grasped by the operator to move the stop 81 to its various positions of adjustment relative to the abutment '79 as shown in Figures 3 and 8. Thus from the foregoing, it will be observed that the stop mechanism may be readily adjusted so that the latter may be either manually or automatically. actuated to throw out the clutch and stop the machine.

While in describing and particularizing upon the features of the present invention, particular stress has been placed upon the association of the throw-out mechanism in connection with a metal working machine of the type illustrated herein and also in connection with a specific con struction of clutch, it should be understood that different mechanism may be utilized with equal facility in connection with various types of machines and also in connection with various types of clutches and accordingly reservation is made to make such changes as may come within the purview of the accompanying claims.

What I claim as my invention is:

1. A machine having in combination, driving and driven members, a clutch operatively connecting said members, actuating mechanism for the clutch including an element connected to the movable part of the clutch, means for automatically actuating said clutch including yieldable means normally urging said element in a direction to disengage the clutch, manually operable means for said clutch, and means for rendering said yielolable means inoperative permitting actuation of said clutch by said manually operable means.

2. A machine having in combination, driving and driven members, a clutch operatively connect-ing said members, actuating mechanism for the clutch including an element connected to the movable part of the clutch, means for automatically actuating said clutch including yieldable means normally urging said element in a direction to disengage the clutch, means normaliy preventing movement of the element by the yieldable means, means automatically operable to release said last named means at predetermined intervals permitting the element to move in the aforesaid direction for disengaging the clutch connection between the driving and driven members,

means for rendering said yieldable means inoperative permitting manual operation of said clutch.

3. A machine having in combination, driving and driven members, a clutch operatively connecting the driving and driven members, actuating mechanism for the clutch including, a reciprocable member connected to the movable ele ment of the clutch, yieldable means normally urging said reciprocable member in a direction to disengage the clutch from the driven member, a lever pivotally mounted adjacent to the reciprocable member having a shoulder intermediate the ends thereof engaging a cooperating shoulder on the reciprocable member for normally preventing movement of the latter by said yieldable means, and means connected to the free end of said lever operable at predetermined intervals to rock the lever about its pivotal connection and disengage said shoulders permitting the reciprocable member to move under the action of the yieldable means and disengage the clutch connection between the driving and driven memb rs.

4. A machine having in combination, driving and driven members, a clutch for operatively connecting said members, actuating mechanism for the clutch including, a reciprocable member normally urging a disengagement of said clutch, means normally preventing movement of said reciprocable member, means automatically opera able to release said last named means to permit said reciprocable member to disengage said clutch, manually operable means for moving said reciprocable member to its initial position, and means for rendering said reciprocable member inoperative upon actuation of said automatically operable release means whereby said manually operable means may be actuated to effect a disengagement of said clutch.

5. A machine having in combination, driving and driven members, a clutch for operatively connecting said members, actuating mechanism for the clutch including, a member connected to the movable part of the clutch, yieldable means normally urging said member to disengage said clutch, means normally preventing movement of said member, means automatically operable to release said last named means to permit said member to disengage said clutch, manually operable means for moving said member to its initial position, and means for rendering said reciprocable member inoperative upon actuaton of said automatically operable release means whereby said manually operable means may be actuated to eiifect a disengagement of said clutch.

6. A machine having in combination, driving and driven members, a clutch operatively connecting said members, actuating mechanism for the clutch including, a reciprocable member connected to the movable element of the clutch, yieldable means normally urging the reciprocable member to release the clutch, a reciprocable element adjacent the reciprocable member, a lever associated with said reciprocable element normally preventing movement of the reciprocable member relative thereto, means operable to actuate the lever to permit movement of the reciprocable member under the action of the yieldable means to release the clutch, means for latching the reciprocable element from movement with the reciprocable member, and manually operable means for releasing said latch and moving said reciprocable element to a position wherein the lever aforesaid engages the reciprocable member to permit the latter and the reciprocable member to be moved to their initial positions as a unit.

'7. A machine having in combination, driving and driven members, a clutch operatively connecting said members, actuating mechanism for the clutch including, a reciprocable clutch actuating member, yieldable means normally urging the reciprocable member to release the clutch, a reciprocable element having a lever normally pre venting movement of the reciprocable member, means for actuating the lever to permit movement of the reciprocable member by the yieldable means aforesaid to disengage said clutch, a latch for preventing movement of the reciprocable element when the reciprocable member is moved under the action of the yieldable means, a second reciprocable member, means permitting a slight relative movement between the reciprocable element and said second reciprocable member to release said latch, and manually operable means for moving the second reciprocable member and the reciprocable element to a position whereby the lever carried by the latter will engage the first mentioned reciprocable member to move the first and second mentioned reciprocable members and the reciprocable element as a unit to their initial position.

8. A machine having in combination, driving and driven members, a clutch operatively connecting said members, actuating mechanism for the clutch including an element connected to the movable part of the clutch, means for automatically actuating said clutch including yieldable means normally urging said element in a direction to disengage the clutch, manually operable means for said clutch, and means for varying the tension of said yieldable means and operable to render the same inoperative permitting actuation of said clutch by said manually operable means.

'9, A machine having in combination, driving and driven members, a clutch operatively connecting said members, actuating mechanism for the clutch including an element connected to the movable part of the clutch, means for automatically actuating said clutch including a yieldable member having one end engaging said element and having the opposite end engaging an adjustable abutment and normally urging said element in a direction to disengage the clutch, manually operable means for the clutch, and means for moving said adjustable abutment to a position to release the tension of said yieldable member permitting manual operation of said clutch.

10. A machine having in combination, driving and driven members, a clutch operatively connecting said members, actuating mechanism for the clutch including an element connected to the movable part of the clutch, means for automatically actuating said clutch including a spring having one end engaging said element and having the opposite end engaging an adjustable abutment andnormally urging said element in a direction to automatically disengage the clutch, and means for moving said adjustable abutment to vary the tension of the spring comprising a rotatable member having a cam engagement with said abutment to render the spring operative or inoperative.

HOMER G. KELLOGG.

Images