US825731A - Punching and shearing machine. - Google Patents

Description

PATENTED JULY 10, 1906.

L. D. JANNELL.

PUNGHING AND SHEARING MACHINE.

APPLICATION FILED FEB.9,1906.

2 SHEETS-SHEET 1.

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PATENTED JULY 10, 1906.-

L. D. JANNELL.

PUNOHING AND SHEARING MACHINE.

APPLICATION FILED FEB. 9, 1906.

2 SHEETS-SHEET 2.

fiaerifor If 1/ jz fio tion on line 4 4 of Fig. 1.

UNITED STATES PATENT OFFICE.

LESLIE D. JANNELL, RUMFORD, MAINE, ASSIGNOR OF ONE-SIXTH TO SYLVER J. GONYA, ONE-SIXTH TO ARETAS E. STEARNS, AND ONE- SIXTH TO PHILO B. CLARK, OF RUMFORD, MAINE.

PUNCHING AND SHEARING MACHINE.

Specification of Letters Patent.

Patented July 10, 1906.

Application filed February 9,1906. Serial No. 300,255.

To all whom it may concern:

Be it known that I, LESLIE D. JANNELL, of Rumford, in the county of Oxford and State of Maine, have invented certain new and useful Improvements in Punching and Shearing ticles, such as tires, hoops, I-beams, angleirons, and other metallic articles of various regular and irregular shapes.

The invention has for its object to provide a simple and eflicient machine for the abovenamed purpose adapted to perform all kinds of work required by the shape of the article submitted to the machine andadapted to utilize the power applied with the minimum loss of power by frictional and other resist' The invention consists in the. improvements which I will now proceed to describe and claim.

Of the accompanying drawings, forming a 2 5 part of this specification, Figure 1 represents a side elevation of a machine embodyin my invention. Fig. 2 represents a front e evation of the same. Fig. 3represents a section on line 3 3 of Fig. 1. Fig. 4 represents a sec- Figs. 5 and 6 represent side elevations showing difl'erent forms of an improved punch constituting a part of my invention. Figs. 7 and 8 represent end views of the punches represented in Fi s. 5

3 5 and 6. Fig. 9 represents a side view of the carrier hereinafter described and a portion of 'the mechanism for reciprocating the same. Fig. 10 represents a front elevation of the parts shown in Fi 9, the lower portion of 4 the carrier being broken away and shown partly in section. Fi 11 represents-a side View of the removable punch holding and guiding yoke hereinafter referred to. I

The same numerals of reference indicate the same parts in all the figures.

In the drawings the supporting-frame of the machine is shown as composed of two side pieces 12 12, which are separated throughout the greater part of their area to 5 form an intermediate space, in which a carrier 13 is vertically movable. The side pieces 12 meet at the forward upper portion of the frame to form a seat 14, Fig. 2, which is substantially horizontal and is provided at its edges with guides 15 16, formed to overhang the base 17 of a punch holding and guiding yoke 18. The edges of the base 17 are formed to engage the guides 15 16, the meeting edges of the guides and base being of dovetail form. The guide 16 is movable and is secured in lace by a screw 20, so that it may be remove or loosened to permit the removal of the yoke and tightened to clamp the yoke firmly in place on the seat 14. The yoke is provided with a socket for a female punching-die 21 and with a guide 22, overhanging said socket, for the. holder 23 of a male punching-die 24, adapted to cooperate with the die 21. Since the punching-die 24 and its holder 23 act as one part, I Wlll hereinafter refer to the holder 23 as a movable punching-die.

The movable punching die 23 projects above its guide and is provided at its upper end with means whereby it may be detachably engaged or coupled with complemental coupling members on the carrier 13 by a movement of the yoke 18 to its operative position on its seat. The con ling means or members on the punchingie 23 are here shown as notches 25, formed in opposite sides of the die, the coupling members on the carrier being the studs 26, projecting into opposite sides of a recess 27, formed in the overhanging head 28 of the carrier 13. The

head 28 overhangs the seat 14 and is arranged so that when the yoke 18 and the punchingdie's connected therewith are moved to place on the seat 14 the punching-die 23 is by this movement engaged with the head of the car rier, so that the punching-die 23 will move with the carrier. It will be seen that the yoke 18 provides for the ready application to and removal from the machine of different sets of punching-dies adapted to make holes of different sizes and shapes.

The side pieces of the supporting-frame are provided below the seat 14 with recesses 29, which form a throat adapted to receive a tire 30 (shown by dotted lines in Fig. 2) or any other piece of work to be sheared by the operation of the machine. One of the side pieces 12 is provided at the lower edge of the recess 29 therein with a fixed shear-blade 31,

' engage and firmly hold the shear blade.

which is preferably secured to the side piece 12 as follows: The said side piece is provided with a cavity 32, having three walls, one-side of said cavity opening into the .recess' 29.

One end of the cavity 32 isdovetailedto overhang one of the dovetailed ends of the shearblade 31. The blade is shorter-than the cavity 32, so that a'space exists between its opposite end and the adjacent endof the cavity. 33 represents a bolt engaged with the side piece 12 and having a head 34 occupy+ ing said space, one side of the head being dovetailed and engaging the'adjacentend of the shear-blade 31. The bolt 3.3 has a nut 35, which when tightened causes the bolt to The carrier :13 is provided with-a corresponding recess 36, which coincides with the recesses 29. To the carrier at the upper edge of the recess 36 is secured, preferably in the manfl ner above described, a fixed shear-bladew37, ada ted tocooperate with the. fixed shearbla e31 when the carrier descends.

38 represents an operating-shaftjournaled in bearings in the lower portion of the supp0rting-frame and extending through an opening 39 in the lower portion of the carrier 13. To the shaft 36 are affixed two operating-cams 40 41. These cams are arranged side by side and are formed to act in opposite directions on the carrier. The perimeter of the cam 40 is in contact with a roll or rolling abutment 42, journaled' in the carrier, and the perimeter of the cam 41 isfin contact with an adjustable piece or abutment 43, secured to the carrier above the shaft 38. The shaft 38 is rotated by power applied in any suitable way, as hereinafter described. During a part of its rotation the cam 40 acts to depress the carrier and cause the punching and cutting or shearing members to operate, and during the remaining part of a complete rotation of the shaft the cam 41 actsto raise or retract the carrier. The cam. 40 is of larger size and has a greater leverage than the cam 41. Hence the power exertedin depressing the carrier is greater than that in re tracting the carrier. The cams and their abutments are arranged sothat the points of contact between the cams and the abutments are substantially in vertical alinement with the center of the shaft. The-punching members are also arranged so that their vertical centers are in alinement with the center of the shaft and with the points of contact of the cams therewith. The shear-blades e5;- tend substantially at right angles with the shaft 38 and are arranged so that their central portions are substantially in alinement with the center of the shaft 38 and with the centers of the punch members. The described arrangement of the operating parts enables the power to beadvantageously ap plied and prevents any liability of lateral stepped. two faces 56'- 57, the lower step 56 having a .end has three steps 59 6O 61.

therein during the punching and shearing op- V erations.

The, carrier 13 is rovided with upper guide members .45,and with the lower guide members" 46, said guide members engaging complemental guide members in the inner sides of'the side pieces-of the frame. The guide members 45 are located above the shear-blades 38, while the guide members 46 are located wholly or mainly below the shearblades. This arrangement, of the guidemembers contributes to the steadiness and ease of operation of the machine and prevents-any tendency of the carrier to bind or stick on its bearings. The abutment 43 is adjustable bymeans ofslots and bolts, as shown in Fig. 9, so that it may be moved.to

compensate for wear of its lower end.

I, have .provided power mechanism and hand-operated mechanism adapted to be used interchangeably to rotate the shaft 38. The power mechanism includes .a drivingshaft 48, connected by a suitable train of gearing withthe shaft 38, as indicated in Figs. Land 2, the said driving-shaft being driven by a pulley 49, normally loose on the shaft and adapted to be engaged therewith by a clutch 56, forming a part of an automatic stop-motion adapted to arrest the ro tation of the driving-shaft after each descent and retraction of the carrier, so that unless the operator depresses a treadle 51 on a lever connected with the automatic stop-motion the machine will stop after each retraction of the plunger. The hand-operated mechanism includes a hand-lever 52, mounted to oscillate upon the shaft 38 and carrying a pawl 53,. which normally en ages a ratchet 54, 'afiixed to the shaft 38. en the lever is "oscillated, the pawl and ratchet impart a step-by-step rotation to the shaft 38. When the machine is operated by power, the pawl ,53 may be locked by any suitable means out of engagement with the ratchet 38.

The punch 24 is shown in Figs. 5, 6, 7, 8 as of cylindrical form, its acting end being In Figs. 5, 7 the stepped end has cutting edge 58. In Figs. 6, 8 the cutting step 59 has two radial cutting edges 62, while the step 60 has a single radial cuttin edge 63. This formation of the acting en of the punch enables it to form a hole by successive operations, so that less power is required.

The faces of the stepped portions of the acting end of the punch are in planes transverse to the horizontal axis of the punch, and the side face from one transverse face to the other is substantially at a right angle to said transverse faces. Therefore, as is obvious,

The lower one portion of the die will complete its operation to form a part or one side of a hole and i then the next portion of the die will act on the part of the metal at one side of the part first acted on. In other words, a piece of metal of small area may be entirely removed by an abrupt cutting action before the next piece of metal at one side is removed, so as to complete the formation of the hole.

The punch is provided with a centering projection 64, arranged on the axial line of the punch, this projection entering the prickpunch made in the work to locate the center of the punched hole.

The head 28 of the carrier is made of a relatively small cross-sectional area, as indicated by Figs. 1, 2, 9, 10, so that it may be encircled by a tire or hoop 65, (see dotted lines in Fig. 2,) presented to the punching members. The machine is therefore adapted to punch tires, hoops, and other annular bodies of various sizes from a relatively small size to a practically unlimited size.

The punch holding and guiding yoke 18 when in place occupies a space between the seat 14, which is located directly above the shear-blades and theoverhanging head 28. When the yoke 18 is removed, this space may be utilized to receive the upper portion of an annular body 30, such as a tire, the lower portion of which is presented to the shear-blades. Provision is thus made for shearing tires, hoops, &c., of various sizes.

The sides of the frame in which the recesses 29 are formed are externally unobstructed, so that straight pieces of work pre sented either to the punching-dies or to the shear-blades may project to any desired distance from the sides of the machine. The machine is therefore adapted to operate on a great range or variety of work and is at the same time very compact in construction, so that it occupies a relatively small floor-space.

I claim 1. In a combined punching and cutting machine, the operating-shaft arranged transversely to the line of the cutting-blades, said shaft, the center of the cutting-blades and a punch operated from the same shaft being in substantially the same plane, and said punch and cutting mechanisms having feed-openings facing in the same direction.

2. A punching and shearing machine comprising a supporting-frame having a fixed unch member at its upper portion, and a fixed shear-blade located below the fixed punch member, a carrier movable vertically in the frame and having a punch member and a shear-blade arranged to cooperate respectively with the fixed punch member and fnred shear-blade, and an operating-shaft located below the shear-blades and having oppositely and alternately acting cams engaging the carrier at points at opposite sides of I the shaft and substantially in alinement with the punch members and with the central portions of the shear-blades, one of the cams being formed to depress the carrier with a relatively slow motion while the other is formed to raise the carrier with a relatively quick motion.

3. A punching and shearing machine comprising a supporting-frame, a movable carrier guided thereby in a substantially vertical path, said frame and carrier having complemental cutting members which are caused to cooperate by movements of the carrier, and an operating-shaft provided with two oppositely-acting cams, one cam acting to project the carrier and cause the action of the cutting members, and the other cam acting to retract the carrier, the frame and carrier being formed with laterally-opening recesses to permit the feed of wide or circular pieces of work to the said cutting members.

4. A punching and shearing machine comprising asupporting-frame, a movable carrier guided thereby in a substantially vertical path, said frame and carrier having complemental cutting members which are caused to cooperate by movements of the carrier, and oppositely-facing abutments at its lower portion, located substantially in alinement with the said cutting members, and an operatingshaft provided with two oppositely-acting cams cooperating with said abutments, one cam acting to project the carrier and the other to retract the carrier, the frame and carrier being formed with laterally-opening recesses to permit the feed of wide or circular pieces of work to the said cutting members.

5. A punching-machine comprisin a supporting-frame having a substantial y horizontal seat provided with guides, a die holding and guiding yoke having a base movable on said seat between the guides, complemental punching-dies, one attached to the yoke and the other movable therein, the movable die having coupling members, and a reciprocating carrier having a head overhanging the seat, said head and movable die having complemental coupling members adapted to be interlocked by a movement of the yoke to its operative position on the seat.

6. A punching-machine comprising a supporting-frame having a punch member, a guide above said punch member, a reciprocating carrier havin a head overhanging the guide and the punch member, and a punch member movable in said uide and enga ed with the overhangin head the said head eing of relatively small cross-sectional area, so that it may be surrounded by an annular body presented to the punching-dies, and the said guide and the two punch members being removable as a unit from the supportingframe.

7. A punching and shearing machine comprising a supporting-frame having a substantially horizontal seat at its upper forward portion, and a fixed shear-blade located below said seat, a die holding and guiding yoke movable horizontally to and from said seat, complemental punching-dies, one attached to the yoke and the other movable therein, and a reciprocating carrier movable vertically in the frame and having an upper end projecting above the frame and overhanging the seat said overhanging end being provided with means for detachably engaging the movable die when the yoke is in its operative position upon the seat, the carrier having also a shear blade arranged to cooperate with the fixed shear-blade, the said yoke occupying a space directly above the shear-blades and between the seat and-the overhanging end of the carrier, so that the removal of the yoke permits the utilization of said space for the reception of the upper portion of an annular body sub jected to the shear-blades.

8. A punching and shearing machine comprising a sup orting-frame, a carrier movable thereon, sai frame and carrier having complemental cutting members caused to act by movements of the carrier, a rotary operatingshaft having means for engaging and reciprocating the carrier, the frame and carrier being formed with laterally-opening recesses to permit the feed of wide or circular pieces of work to the said cutting members, a power mechanism for rotating said shaft, said mechanism having an automatic stop-motion for rendering it inoperative, and a hand-operated shaft-rotating mechanism adapted to be used interchangably with the said power mechanism.

9. In a machine of the character stated, a shear-blade holder having a three-sided recess, one of the end walls of which overhangs the bottom of the recess, a shear-blade adapted to enter said recess and having shouldered ends, the blade being shorter than the recess, so that a space exists between one of its ends 5 and the corresponding end of the recess when the blade is in place, and an attaching-bolt engaged with the holder and havin a head occupying said space, one side of the ead being formed to overhang the adjacent end of the shear-blade.

10. In a machine of the character stated, a male punch having a stepped, acting end, the faces of the stepped portions being in planes transverse to the longitudinal axis of the 5 5 punch, and the side face from one transverse face to the other being radial and substantially at a right angle to said transverse faces, whereby one portion of the die may complete its operation to form part of a hole and then the next portion of the die may act on a part of the metal at one side of the part first acted on.

In testimony whereof I have affixed my signature in presence of two Witnesses.

LESLIE D. JANNELL.

Witnesses: MARY E. HEGARTY, RALPH T. PARKER.

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