US1497370A - Removable cutting device - Google Patents

Description

EAST-$70 June 10, 19249 ,W. W. GALBREATH REMOVABLE CUTTING DEVICE Filed Jan. 19-. 1-92: V s Sheets-Sheet 1 9 240 V l M j w. w. GALBREATH v I v REMOVABLE'CUTTING DEVICE I Filed Jan. 19. 1923 s Sheets-Sheet 2 5mm 10, 19% r 1,497,370

- w. w. GALBREATH REMOVABLE CUTTING DEVICE Filed Jan. 19, 192 3 3 Sheets-Sheet 5v Patented am 10, 1924.

UNETED. STATES newt WILLIAM W. GALBBEATH, OF WARREN, OHIO, STEEL (30., OF lKfAIRtRElI, OHIO, A

ASSIGNOR TO Y'J'UNG-S'll'OW'IN' PRESBW CORPORATION OF 0H0.

REMOVABLE CUTTING DEVICE.

Application filed January 19, 1928. Serial No. 613,674.

T 0 all whom it may concern:

Be it known that I, WILLIAM W. GAL- BREATH, a citizen of the United States, residing at Warren, in the county of Trumbull and State of Ohio, have invented a new and useful Improvement in Removable Cutting Devices, of which the following is a specification.

The present invention relates to improvements in cutting devices, and more particularly to such devices in which cutting members are mounted on co-operating shafts, the material to be operated upon passing therebetween. It will be fully understood from the following description, illustrated by the accompanying drawings, in which is shown an embodiment of the invention suitable for use in forming cuts or slits in metal sheets or blanks previous to forming the same into expanded metal lath. In the drawings Figure 1 is a plan view, partly in section, of such a device;

Fig. 2 is an end elevation of the device shown in Fig. 1 from the feed-table side, the feed table having been removed, and

Fig. 3 is a vertical section on the line 3-3 of Fig. 2.

In the form, of construction illustrated in the drawings, the cutter shafts are mounted at their ends in bearing or journal blocks, which are suitably adjustably mounted in a removable frame which is secured to the bed plate or support so as to be readily movable into and out of position and also so as to be quickly and precisely set into a proper position. The construction is particularly adapted for use in devices where replacement of cutters is occasionall necessary, the removal of one frame w1th its assembled cutters and its replacement by another being readily and rapidly accomplished.

Referring more particularly to the drawings, the numeral 5 indicates a bed plate or support upon which the cutter unit is mounted. Upon this ,bed plate 5 rests the removable frame or mounting for the cutters, this frame being indicated by the numeralfi. The lower portion of this frame is formed by a base plate 7, which, in the embodiment illustrated, lies in a substantially horizontal plane. At the ends of this base late, and preferably formed in tegrally t erewith, are the vertical side members 8. The side members 8 at each end of th frame 6 are formed on their inner surfaces to provide bearing surfaces or slides for the journal or bearing-blocks carrying the cutter shafts, all fully referred to hereinafter. Viewed from either end, the vertical side members with the horizon tal base plate of the frame 6 form a substantially U-shaped construction. The side members 8 on each side of the. frame are spaced apart a sufficient distance to permit the feed of material to the cutters. A top plate 9 extends across the top of the frame 6 and is secured to the side members 8 of the latter by any suitable means, for example, by the bolts 10. The means by which the frame 6 is secured to the bed plate 7 will be hereinafter set forth.

The journal or bearing blocks for the cutter shafts are formed to fit slidably between the side pieces 8 of the frame 6. The lower journal blocks 11 are formed with their lower surfaces angularly inclined, as shown at 11 in Fig. 2. The angle of the lower surfaces of the two lower journals 11 are substantially the same, but oppositel directed. Between the journals 11 an the base plate 7 of the frame 6 are slidably mounted the wedge-shaped members 12, the angles of inclination of the upper surfaces of which correspond to the angles of inclination 11* of the lower surfaces of the journals 11. Adjustment of the positions of the wedge members 12 along the base plate 7 effects a vertical adjustment of the lower journals 11. A suitable means for effecting the adjustment of the wedge members 12 is illustrated in the drawings.

Each of the wedge members 12 is provided with an upstanding car 13. Between the two wedge members 12 a U-shaped member 14 is secured to the base plate 7 of the frame 6. A bolt 15, the opposite ends of which are provided witlt threads of equal pitch running in opposite directions, passes through, the sides of the stationary member 14 and through the ears of the wedge members 12, these ears being tapped and threaded to receive the threads on the bolt 15. Between the side members of the stationary U-shaped member 14, a turnbuckle or head 16 is secured to the bolt 15. By rotating the turnbuckle or head 16, the Wedge members 12 are moved simultaneously and e ual- 1y outwardly or inwardly, a correspon vertical movement of both lower journals 11 being thereby produced.

a The upper journals 17 are adjustably supported above the lower journals 11, preferably b suspending them from the top plate 9 of tie frame 6. Suitable means for this purpose are illustrated in Fig. 2. A bolt 18 passes freely through an opening 19 in the top plate 9 and screws into a threaded opening 20 in the journal 17. At each side of the bolt 18, a bolt 21 passes through a suitable threaded opening in the top plate 9, its lower end being seated against the upper surface of the journal 17, suitably against a hardened plate 22" in a socket 22.

The bolts 21 are locked in position by nuts 23. By suitable adjustment of the bolts 18 and 21 the position of the upper journals 17 may be precisely determined.

The cutter shafts 24 pass through the-respective pairs of u per journals 17 and lower journals 11. n the cutter shafts are suitably mounted the cutting devices, which, in the form illustrated, are preferably removably secured to the shafts. As the specific form of the cutting elements is not a part of the present invention, it is not further hereinafter referred to.

The frame 6 is held in position upon the bed plate 5 in a manner permitting its ready removal and replacement, suitable means for this purpose being illustrated. At the base of the frame 6 and projecting from one side therefor are lugs 26, which are provided with slots 27 0 en at the sides. Bolts 28 having their hea s 29 loosely held in suitable cavities 30, formed for-the purpose in the bed plate 5, project upwardly and pass through the slots 27 in the lugs 26. Nuts 28 threaded on the projecting ends of the bolts 28 aid in holding the frame 6 in position. At each side of the bed plate 5 there are mounted (preferably formed integrally with the bed plate) the buttress members 31 and 32. Through the upper end of each of these buttress members a set screw 33 is threaded, its

end impinging against a suitable boss 34 formed on the side of the frame 6. The set screws are locked by the lock nuts 35.

In theform illustrated in the drawings,

the cuttin unit is shown as assembled with a feed ta le 36 and a receiving table 37. The shafts 38 are geared together, and the gears on the shafts 38 mesh with gears 39 and 40 mounted respectively on opposite ends of the upper and lower cutter shafts 24. Drive is applied to one of the shafts 38, in the form illustrated, the lower.

The feed table 36 is provided at its end with a grooved projection 41. This grooved projection engages or interlocks with a grooved ledge 42 on a guide member 43 suitably secured, for example, by bolts 44 to the side members 8 of the frame 6. This guide. member is provided with a guide slot 45 through which the metal blanks or other material is fed to the cutters. The feed table portion 36 may be disengaged from the cutter unit by lifting its projecting end 41 from the ledge 42.

At the exit side of the cutter unit suitable strippers may be mounted upon it. In the form illustrated, the support for the strippers is formed as a casting 47 the casting being formed with spaced transverse members 48, the space between these members serving as a guide for the outgoing slitted or cut blanks. The transverse members 48 form respectively the lower and upper halves of the mountings for the strippers for for the upper and lower cutters. A bar 49 is mounted on each of the transverse members 48. The bars 49 are held in position by co-operating transverse members 50 which are bolted to the transverse members 48 of the casting 47 by means of suitable bolts 51. The strippers 52 are mounted upon the transverse bars 49 and project between the cutting elements on the cutter shaft 24. The casting 47 with the assembled strippers is secured to one of the side members 8 of the frame 6 by any suitable means, for example, the bolts 53, and is removable therefrom as a unit.

The cutter unit may he removed from the assembly in the following manner. The feed table 36 is removed, being, in the form illustrated. lifted out of engagement with the shoulder 42. The set screws 33 on the buttress members 31 and 32 are unscrewed sufiiciently to permit the cutter frame 6 to be moved until the gears 39 and 40 are disengaged from the gearing of the feed rolls 38. The nuts of bolts 28 having previously been loosened, the play of the bolts in the bed plate 5 is suflicient to permit the bolts to be turned down out of the way of the lugs 26. With these bolts out of the way, the entire cutter frame with the cutters may be removed for example, by means of the eye 54 secured to the top plate 9.

In order to remove the cutters from the frame, the bolts 10 securing the top plate of the latter are removed, as are also the bolts 18 holding the upper bearings 17. If the strippers are present in the assembly. these may previously be removed as a unit, the bolts 53 being loosened for this purpose. Similarly. the feed guide 43 may be removed by loosening the nuts 44. \Vith the top plate 9 removed, the cutter shafts with the end bearing blocks may be removed bodily from the frame 6. New cutter units in other end bearings of similar form may then be inserted in the frame, the top plate 9 again secured to the frame and the cutter unit returned in its entirety to the assembly. By means of the wedge adjusting members 12 for the lower cutter bearings and the adjusting screws 18 and 21 for the upper cut ter bearings, the relative positions of the two (utters may then be properly fixed The cutter unit is then moved into position such that the gears 39 and 40 reengage the gearing of the feed rolls 38, the set screws 32 are screwed down and locked and the bolts 28 are properly positioned and tightened. The feed guide 43 and the stripper casting 47 are assembled with the cutter unit previous to its return to position. The proper adjustments having been made, the feed table 36 is returned to position and operation of the device may proceed.

Although the present invention is described in connection with specific details of a form of construction embodying the same, it is not intended that these details shall be regarded as limitations upon the scope of the invention except in so far as included'in the accompanying claims.

I claim:

1. In a device of the class described, the combination of a fixed bed plate, -a cutter unit including a frame removably seated on said bed plate, cutters'mounted in said frame, and means secured to the bed plate and engaging the frame at one side thereof for buttressing the frame into position.

2. In a device of the class described, the combination of a fixed bed plate, a cutter unit including a frame seated on said bed plate, fastening devices engaging the fram'e at one side thereof for securing it to the bed plate, andbuttress members secured to the bed plate and engaging the frame to hold it in position. i

3. In a device of the class described, the combination of a fixed bed plate, a cutter unit including a frame seated on said bed pla te',' lugs projecting from the base of the frame at one side thereof, fastening means operable upon said lugs to secure the frame in position, buttress members secured to the bed plate at one side of the frame and adjusting screws passing through the buttress members and engaging the frame.

4. In a device of the class described, the combination of a fixed, bed plate, a cutter unit including and a removable frame secured on said bed plate, said frame having a base plate, side members rising from said base plate at each end thereof, a topplate secured to the side members, bearing blocks slidably mounted between the side members at each end of the frame and cutters arranged between the side members of the frame, said cutters being journalled in said bearing blocks.

5. In a device of the class described, the combination of a fixed bed plate, a cutter unit including a frame removably secured on said bed plate, said frame including a base plate, side members rising from said base plate at each end thereof, a top plate mounted on the side members, bearing blocks slidably mounted between the side members of the frame at each end of the latter, the lower surfaces of said blocks being an nlarly inclined in opposite directions, we ge members slidable lengthwise of the base plate within the frame under said blocks, means for moving the wedge members simultaneously to effect adjustment of the bearing blocks, and cutters arranged within the frame said cutters being journalled in said blocks.

6. In a device of the class described, the combination of a fixed bed plate, a cutter unit including a frame removably secured on said bed plate, said frame including a base plate, side members rising from the base plate at each end thereof, superposed bearing blocks slidably mounted between said side frames at each end of the frame, the

' lower bearing blocks having their lower surfaces angularly inclined in opposite directions, wedge members slidably mounted within said frame, means for moving said wedge members simultaneously below the lower bearing blocks to efiect vertical adjustment thereof, a top plate for said frame mounted on the side members, means se-- cured to the top plate for adjustably positioning the top bearing blocks and cutters within the frame, and cutters journalled in said bearing blocks.

*i-s7- In a device of the class described, the

combination of a fixed bed plate, a cutter unit including a frame removabl seated on said bed plate, cutters mounte in said frame, a unitary member forming a feed guide secured to said frame and means forming part of said member for supporting the end of a feed table in proper position for feeding to said guide.

8. In a device of the class described, the combination of a fixed bed plate, a cutter unit including a frame removabl seated on said bed plate, cutters mounte in said frame, a unitary member forming a feed guide secured to said frame, a grooved ledge formed. on said feed guide-member, and a feed table section having a grooved projection interlocking with said led e.

9. In a device of the class described, the combination of a fixed bed plate, a cutter unit including a frame seated on said bed plate, said frame includin a base plate, side members rising from tie base plate at each end thereof and a top plate secured to the side members, superposed bearing blocks slidably mounted between the side members of the frame at each end thereof, means mounted in said frame for adjustably positioning the upper and lower blocks independently of each other, cutters journalled in said bearing blocks, lugs projecting from the base plate of the frame at one side thereof, fastening means secured to the bed plate and co-operating with said lugs; buttress members secured to the bed late at the same side of the frame as the lbgs and set screws in the buttress members engaging the frame.

10. A cutter unit comprising a frame, bearing blocks removably mounted in said frame, superposed cutters mounted in said bearing blocks, a unitary feed guide member removably secured to one side of the frame and provided with a guiding slotted member projecting between the cutters, and a unitary stripper member removably secured to the other side of the frame and provided with spaced strippers projecting between the cutters.

11; In a cutter unit, a stripper member comprising spaced transverse members, cooperating transverse members removably secured thereto on opposite sides thereof, bars removably mounted between the first mentioned transverse members and the co-operating transverse members and strippers supported on said bars.

12. In a device of the class described, the combination of a fixed bed plate, a fixed support rising therefrom, a driving gear journaled in said support, a cutter unit removably seated on said bed plate comprising a frame, cutters mounted in said frame, a driven ear carried by said frame for actuation 0 said cutters said driven gear meshing with said drivin gear when said unit is in place on-said be plate.

13. In a device of the class described, the combination of a fixed bed plate, a cutter unit removably seated thereon comprisin a frame, parallel shafts journaled 1n sai frame, cutters mounted on said shafts, driven gears on alternate ends of said shafts, fixed supports rising from said bed plate parallel driving shafts journaled in said supports, driving gears on said driving shafts and normally meshing with said driven gears, and means to drive said driving gears.

14. In a device of the class described, the combination of a bed plate, a support projecting therefrom, a driving gear ournaled upon said support, a cutter unit comprising a frame having a base plate and supports projecting therefrom, cutters journaled in said supports, a driven gear for actuating one of said cutters meshing with said driving gear when the frame is in place upon the bed plate, a buttress pro jecting from said bed plate in spaced relation to said first named support, means carried by said buttress engaging said drivengear-carrying support closely adjacent a point in the common plane of the axes of the said gear.

WILLIAM W. GALBREATH.

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