US1296803A - Sheet-trip. - Google Patents

Description

0. M. HOCH.

SHEET TRIP.

APPLICATION FILED APR. II. I9I1.

Patented Mar. 11, 1919.

4 SHEETS-SHEET l.

5] noa/nto@ O. M. HOCH.

SHEET TRIP.

APPLICATION FILED APR. II. 1917.

Patented Mar. 11, 1919.

O. IVI. HOCH.

SHEET TRIP.

A) APPLICATION FILEi) APR.1T.19I7. Lema,

Patented Mar. 11, 1919.

4 SHEETS-SHEET 3.

MLM

0. M. HOCH.

SHEET TRIP.

APPLICATION FILED APR. II, |911.

Patented Mar. 11, 1919.

4 SHEETS-SHEET 4.

] noauto@ @m MKM OTTO M. HOCH, OF ROCHESTER, NEW YORK, ASSIGNOR T0 M. D. KNOWLTON COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

SHEET-TRIP.

Specification of Letters Patent. Patented D131-, 11, 1919.

Application led April 11, 1917. Serial No. 161,379.

To all whom it may concern.'

Be it known that I, OTTO M. HOCH, a citizen of the United States, and resident of Rochester, in the county of Monroe andv State of New York, have invented certain new and useful Improvements in Sheet- Trips, of which the following is a specification.

,This invention relates to sheet trips for use in connection with mechanism for 4per*- forming certain operations upon a moving web of material, the sheet ltripbeing used to control the operation of said mechanism.

The primary object of the present invention resides in thevprovisionl of a sheet trip which is actuated by the forward edge of the moving web of material to mechanically control the clutch members which set in mo- 1 shearing a moving web of material into tion, the mechanism disclosed includes,

sheets of various lengths, such as disclosed in the `copending application, Serial No. 67,799, filed Dec. 20, 1915. In said applicabroadly, means for feeding a web of material, means for shearing the web transversely into sheets while the web is in movement, which means is actuated and controlled by a clutch, and means for controlling the clutch so that its members will be interengaged when the proper length of material has been fed and is ready to be sheared. Specifically, the present invention relates to the means for controlling the engagement and disengagement of the clutch members. It will be understood, however, that the sheet trip herein described and claimed may be used in various other connections with equal facility, and the invention should, therefore, not be considered as limited to the specific machine herein referred to.

In the drawings Figure 1 is a sectional view through the machine showing the location of the respec` tive elements o'f the present invention;

Fig. 2 is an enlarged detail of a portion of the machine illustrating the trip case and its associated parts and the clutch-controlling .cam with its associated parts i Fi 3 is an enlarged side elevation of said clutch-controlling cam and the mechanism for actuating the clutch, together with the A the machine.

' Fig. 6 is a detail of the latch and the controlling pawl therefor.

Referring to the drawings, and particularly to Fig. l, the machine disclosed therein includes a plurality of feed rollers which are arranged in pairs and are indicated generally by the reference character R. These rollers feed the web of material, which is to y be operated upon, over a table T and between the knives K an K of the shear mechanism, and thence on to the moving beltsB which convey the sheared sheet of material from The particular construction of these parts need not be here described in detail, as they form no part of the present invention, but it is to be noted that the shear mechanism which travels with the webof material during the shearing operation is rendered operative by a clutch and copererating mechanism, such as set forth in the co-pending application, Serial No. 67,818, filed December 20, 1915. The shearing operation takes place when the arrival of the leading edge of the web of material Areaches the sheet trip, which is herein designated generally by the reference character S. The clutch referred to is, as in the last-mentioned co-pending application, controlled by a clutch rod 1, which rod is pivoted at 2, on an arm 3. This arm 3 is secured to a shaft 4 which is supported in a bracket 5 carried by the frame of the machine. Mounted loosely on 'the shaft 4 isa cam lever 6 which carries a roller 7 at its upper or free end. This roller 7 is adapted to coperate with a cam 8 which is provided with highand low portions, as illustrated in Fig. 3 of the drawings, and is mounted on a crank shaft 9, which shaft is actuated by the engagement f of the clutch members, above referred to, in

' the manner disclosed in the last-mentioned ranged to engage a wear-block 14 on the cam lever 6, as disclosed in Fig. 3. This pawl 13 is adapted to be moved out of engagement with said wear-block 14 by a rod 15 which is secured to the pawl and has a lost motion connection at 16 with an arm 17 carried by and rigid with a shaft 18, which shaft is mounted in suitable brackets 19 on the frame of the machine. A second arm 20 extends from this shaft 18 and is connected to a bell crank lever 21 by means of a connecting link 22. This lever 21 is attached to a crank arm 23, which is mounted rigidly o n an oscillatory shaft 24, by means of a connecting rod 25. This shaft 24 is carried by the trip casing S, as disclosed in Fig. 4 of the drawings. The rod 25 passes through a bracket 26 and is provided with a collar 27, between which collar and bracket a coil spring 28 is mounted and surrounds vthe rod 25, which spring, when relieved of itsv confinement, moves the rod 25 and, through the connecting elements, lifts the pawl 13 from engagement with the wear-block 14. Thus, when the shaft 24 is permitted to oscillate so that the arm 23 thereon will move to the left in Fig. 3, under the action of the spring 28, the pawl 13 will be lifted from its engagement with the block 14 and the clutch rod 1 permitted to move under the influence of its actuating spring (not shown) to engage the clutch members so that the shearing mechanism will be actuated.

In order that the parts may be reset and the spring 28 again placed under compression, a cam lever 29 is loosely mounted on the shaft 4 and is provided with a roller 30, which is normally maintained in engagement with the face of the cam 8 b v a spring 31. Rigid with and extending in angular relation to the cam lever 29 is an arm 32, which is connected, by a lost motion connection through a link 33, with the arm 17` Thus, when the cam 8 is rotated after the clutch members have been engaged, as previously described, the riding of the roller 30 on the high portion of the cam 8 will cause the downward movement of the link 33, and the consequent rengagement of the pawl 13 with the wear-block 14, and the placing of the spring 28 under. compression, so that it will be ready for a subsequent operation.

In order that the rod 25 may be permitted to move at the proper times to cause the interengagement of the members of the clutch, and the consequent operation of the shearing mechanism, the sheet trip. which has been previously referred to and designated by the reference character S, is provided. This y trip includes a casing` which, as aforesaid,

supports the shaft 24 and which is adjustably mounted on a graduated tube 34, with the graduations 35 of which a pointer 36 on the casing coperates to indicate the proper position of the casing when it is desired to shear the web of material into sheets of predetermined lengths. This casing is moved on the tube 34 by means of a hand-wheel 37 which operates a pinion 38 through a train of gears and pinions, which are indicated in dotted lines in Fig. 4 and which are not herein described, as the particular means forms no part of the present invention and as they are described in the afore-mentioned co-pending application, Serial N o. 67,818. A trip lever 39 is pivoted on a shaft 40 on the trip casing and'is provided with fingers at its lower end which are faced with wearplates 41, wfhich fingers extend through slots in the stripper 42. This stripper is pivoted to the trip casing at 43 at its forward end is movable "ertically at its rear end, being guided by a bolt 44 which depends from the casing The web of material as it is fed beneath the stripper 42 is acted on by pressure rolls 42 which are arranged on the sides of the trip casing and are mounted on the transversely extending pin 43. The lower end of the trip lever 39 lies in the path of movement of the web of material which passes beneath the stripper 42, and by which latter, the upper liner of the web, when the latter is corrugated board, is prevented from curling. This lower end of the trip lever 39 is maintained in its forward position by means of a spring 45 which is attached to an arm 4G on the lever and forces the lower end of the lever into engagement with a stop 47 on the casing. Pivoted loosely on the shaft 40 is a latch 48, which is of angular -form, and is provided with an extending portion arranged to engage a latch arm 48', which is keyed to the shaft 24, so that it will oscillate with the latter, but so that it will move with the casing and with relation to the shaft. This latch arm 48 is provided at its lower end with a shoe 49, for a purpose which will later become apparent. This latch 48 is normally held in the path of movement Iof the l'atch arm 48 so that the movement of the latter, under the influence of the spring 28, is prevented, by a spring 50. A pawl 51 is pivoted to an extension 52 of the trip lever 39, and the upper end of ,this pawl 1s normally held in engagement with a notch in the adjacent end of the latch 48 by a spring 53. Thus, when the trip lever 39 is moved against the action of the spring 45 by the moving web of material,

`the pawl 51 will likewise be moved, and because of its engagement with the latch 48, will cause the latter to pass from the path of movement of the latch arm 48', so that the spring 28 will be free to operate until the movement of the latch arm 48 is arrested bv a stop This engagement of the pawl 51 and the latch 48 is maintained until the tail of the pawlcontacts with a stop 54, at which time the pawl will be forced out of engagement vWith the notch in the latch 48, and the spring 50 will move the end of the latch 48 into engagement with the lower cam Vface of the shoe 49, so that upon the movement of the rod 25 in the opposite direction, and the consequent rotation of the shaft 24, the latch 48 will again be permitted to assume its original position and prevent the movement of the latch arm 48 unt-il again released by the trip lever 39.

While the operation of the mechanism so far described is thought to be clear from the preceding description, a brief summary is here given. When the web of material is fed beneath the stripper 42 and engages the trip lever 39, it moves the latter rearwardly, and upon such movement, the latch 48 is disengaged from the latch arm 48. Immediately upon such disengagement, the engagement of the tail of the pawl 51 with the stop 54 disengages the pawl from the notch in the latch 48 and permits the spring 50 to force the latchinto engagement with th;` shoe 49 of the latch arm 48. When the latch arm 48' is released, the spring 28 moves the rod 25 and through the connecting elements disengages the pawl 13 from the wearblock 14 on the cam lever 6, thus permitting the clutch spring to operate and engage the clutch members. The engagement of these clutch members causes the rotation of the cam 8, and when this cam has completed a half revolution and the lcam lever 29 moves to the high portion of the cam, the spring 28 is again put under compression and the pawl 13 rengaged through the arm 32 and the related elements. The latch arm 48 at this time moves to its initial position and the latch 48 again prevents its movement until the trip lever is subsequently actuated.

It may sometimes become desirable to move the clutch members into engagement by hand or to lock them out of engagement, and in order that this may be accomplished, al controlling lever 56 is provided, which lever is pivoted at 57 to a support 58 having a pair of spaced notches 59 and 60. Pivoted to the lever 56 at 61 is a rod 62, which rod is, at its other end, slidably connected at 63 to the arm 12. When the lever 62 is in the position illustrated in Fig. 3 and maintained in. such position by the engagement of the spring-pressed pawl 64 in the notch 60, the operation of the clutch under the action of the sheet trip will be permitted. lVhen,

however, the Alever 56 is moved so that the pawl 64 engages in the notch 59, the arm 12. together with the arm 3, will be prevented from moving to permit the clutch members to be interengaged, and, consequently, they will be locked out of coperative relation. A rod 64 is connected to the lower end of the lever 56 and to a bell-crank lever 65, one arm of which engages beneath a collar 66. on the link 1.5, so that when the lever 56 is moved to its eXtreme right. position, the link 15 will be moved upwardly, which will result in the disengagement of the latch 13 1 from the wear-block 14. Thus, the latch may be tripped by hand and the clutch members permitted to 'interengage lVhile a particular embodiment of the invention is illustrated and described, it is to be understood that various changes may be made in the construction of the various parts without departing from the spirit of the invention and without exceeding the scope of the claims.

What is claimed is 1. In a machine of the class described, the combination with clutch-controlling mechanism of an oscillatory shaft having a latch arm rigid therewith, means connecting said shaft with the clutch-controlling mechanism, a latch'arranged to engage said latch arm to prevent the movement of the shaft, and a trip lever for operating the latch to disengage the same from the latch arm.l

2. In a machine of the class described, the combination with clutch-controlling mechanism of an oscillatory Shaft, a latch arm rigid therewith, means connecting said shaft with the clutch-controlling mechanism, a. latch adapted to extend into the path of movement of the latch arm. means for maintaining the latch in such position. and means for shifting it from such position.

8. In a machine of the class described, the

combination with an oscillatory shaft, of clutch-shifting mechanism connected to and controlled thereby, means for preventing oscillation of the shaft, and means for rendering the last-mentioned means inoperative.

4. In a web shearing machine, the combination with clutch-controlling mechanism including a reciprocating member, an oscillatory crank arm to which said member is pivoted, a latch for preventing the movement of the crank arm, and a trip lever, having a pawl connection with the latcln'for controlling the operation of the latter.

5. In a. machine of the class described, the combination with a clutch rod, of an oscillatory arm positively connected therewith, a cam lever, a cam for controlling the latter,y a latch connectionv between the cam lever and oscillatory arm, means controlled by the work for destroying the latch connection,

and means for restablishing said latch connection.

6. In a machine of the class described, the combination with an oscillatory shaft having a latch arm rigid therewith, of a latch adapted to engage the same to prevent its movement, a trip lever having suitable connection with the latch, for moving the latter, and means to destroy such connection upon a predetermined movement of the lever.

7. In a machine of the class described, the

combination with an oscillatory shaft, of a latch therefor, and a trip lever mounted on a common pivot, a pawl carried by the trip lever and engaging the latch, and means for disengaging the pawl from the latch upon a predetermined movement of the lever.

8. In a machine of the class described, the combination with an oscillatory shaft for controlling the operation of a clutch, of a latch arm depending therefrom, a latch arranged to engage the arm, a trip lever for controlling the latch, and a pivotally movable Stripper, the lower end of the trip lever being extended through the stripper.

`9. In a machine of the class described, the combination with an oscillatory shaft having a depending latch arm with a shoe on the lower end thereof, of a latch arranged to extend into the path of movement of the latch arm, a trip lever for moving the latch from such position, means for moving the shaft lto bring the shoe of the latch arm above the latch, means for rendering the trip lever inoperative to further move the latch, and means for moving the latch into engagement with the whereby, upon the reverse movement of, the

latchfarm, the latch will be returned to its initial position. v

10. In a machine ofthe class described, the combination with a clutch-controlled cam, of a shaft, an arm rigid with the shaft and having connection to the clutch, a pair of reversely acting cam levers loosely mounted on said shaft, a latch for securing one of said levers to the shaft, means for rendering the latch inoperative, and .means operated by the other cam lever for subsequently rendering said latch operative.

11. In a machine of the class described, a clutch-controlling mechanism, an oscillatory shaft, a reciprocating rod connected to said shaft and to the clutch-controlling slice,-

oscillatory shaft for controlling the movement of the rod.

12. In a machine of the class described, a clutch-controlling mechanism, an oscillatory shaft, a reciprocating rod connected to the shaft and to the clutch-controlling mechanism, means for moving the rodin one direction and a Work-controlled trip mechanism for controlling the movement of the. shaft.

13. In a machine of the class described, a clutch-controlling mechanism, an oscillatory shaft, a latch arm rigid with the shaft and having a cam shoe thereon, an operating connection between the shaft and the clutchcontrolling mechanism, a latch arranged to prevent the movement of the latch armin one direct-ion, means for rendering the latch inoperative, means for engaging the latch with the cam face of the shoe, and means for arresting the movement of the latch arm while the latch is in engagement With the shoe.

14. In a machine of the class described, a clutch-controlling mechanism, an oscillatory shaft, a reciprocating rodconnected to the shaft and to the clutch-controlling mechanism, a latch arm rigid With the shaft, a latch engageable with the latch arm to prevent the movement ofthe latter in one direction, a trip lever for rendering the latch inoperative, and a lost-motion connection between the trip lever and the latch, whereby the lever. may continue its movement independent of the latch.

Signed at Rochester, in the county of Monroe, and State of New York, this 6th day of April, A. D. 1917.

OTTO M. HOCH.

Witnesses THos. D. PATTON, HUBERT J. MARTIN.

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