US1241517A - Machine for cutting and forming spoons from sheet material. - Google Patents

Description

L. D. JACOBY.

MACHINE FOR CUTTING AND FORMING SPOONS FROM SHEET MATERIAL.

APPLICATION FILED NOV, 27. 1916.

1,241,517. Patented 001;. 2,1917.

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ihp w T||: E meta Afiys- LEO D. JACOBY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE SANISPOON COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

MACHINE FOR CUTTING AND FORMING SPOONS FROM SHEET MATERIAL.

Specification of Letters Patent.

Patented one. 2, 1917.

Application filed November 27, 1916. Serial No. 133,605.

To all whom it may concern:

Be it known that I, LEO D. JAooBY, a citizen of the United States, residing at Boston, county of Suffolk, State of Massachusetts, have invented a certain new and useful Improvement in Machines for Cutting and Farming Spoons from Sheet Material, of which the following is a specification, reference being had therein to the accompanying drawing The invention relates to a machine for cutting and forming spoons from a blank of sheet material and is an improvement upon the machine shown and described in an application filed by me August .30, 1916, Serial No. 117,764. The machine embodying the invention is provided with a pair of co operating cutting dies which are in turn provided with forming dies so arranged and constructed that the blank is died out and thereafter molded to the proper shape in one cycle of operation. In the form of spoon which the machine is especially intended to construct, the shank is given a convex shape and is connected to the bowl by a grooved rib so that the bowl is held rigidly 1n positi on and is prevented from breaking or bending back in use.

The invention has special reference to the automatic mechanism for removing the spoons from the dies as they are finished. There is a tendency when the dies separate for the spoon to stick to one of the dies. In the machine shown and described in the said previous application by me, there was pro vided means for ejecting the spoon from the lower die when the upper die was lifted, and, in order to eject the spoon from the upper die to which it had a tendency to cling when the upper die rises, means were provided for ejecting it from the said upper die. The present invention relates to an improved means for ejecting the spoon from said upper die.

The invention will be fully understood from the following description taken in connection with the accompanying drawings and the novel features thereof are pointed out and clearly defined in the claims at the close of this specification.

In the drawings, Figure 1 is a sectional view showing both dies just after they have separated after the formation of a spoon, showing the spoon clinging to the upper die and before the upper die has risen far enough for the ejector to become operative.

Fig. 2 is an enlarged detail view showing the ejector spindle in position been moved to eject the spoon.

Fig. 3 is a sectional view enlarged showing the locking segments of the ejector in looking position.

Fig. 4 is a sectional view showing the locking segments open.

Referring now to the drawings, the upper die 20 is provided with a shank 21 which is mounted in a vertically movable cross head 17 and is adapted to coiiperate with the lower die 23. The die 20 comprises a holder 24 which is preferably integral with the shank 21, to which is secured a cutting die 25. The cutting die 25 coiiperates with the lower cutting die 23 to cut the blank into the proper contour to be formed into the spoon by the forming dies. Within the cutting die 25 is a forming die having a con-' vex bowl forming portion 27, a concave shank forming portion 9 and a handle forming portion 8. The shank forming portion 9 of the upper die has a slot in which is loosely received a block 30 which is engaged on its upper side by springs 31 which are seated in recesses inthe holder 24. These springs give a yielding downward pressure to the block 30. The holder 24 is formed with a recess 32 to permit the block 30 to be moved upwardly against the pressure of the springs 31. j

The handle forming portion 8 of the upper die 20 is formed to cooperate with the lower die to give to the handle the proper shape.

The lower die 23 is located on a base plate 35 having a recess in its upper surface in which is received a holder plate 36 which in turn carries the die 23 to which it is secured. The die 23 is formed with a cutting edge 38 around its margin adapted to coiiperate with the cutting die 25 and is arranged to enter within the die 25 when the members are brought together.

Inside of the margin formed by the cutting edge 38 of the lower die 23 there is a forming die consisting of a concave bowl forming portion 40 adapted to coiiperate with also formed with a shank forming portion after it hasv 4:1. Centrally of the shank forming portion 41 is a slot to receive loosely a rib 43. The

upper forming die.

In formingthe spoon, the upper die is verrib 43 is yieldingly mounted on springs 44 and is arranged so that it projects slightly above the cutting edge 38 of the lower die 23 when in compressed position, and projects still farther above the edge 38 when in expanded positioni The lower die is also formed with the handle forming portion 48.

In Fig. 1 of the drawings there is shown a spoon A adhering to thelower side of the tically reciprocable with relation to the lower die. As already stated, when the upper die begins to rise after its downward .die. The means shown in the drawings for movement by which the spoon is formed,

there is a tendency for the spoon to remain in contact with the lower die, and means are provided to push this spoon from the lower that purpose'consists or" a pin 53 loosely mounted within the die 23 and seated upon a spring 55 which when the upper die rises is pushed u ward b the spring 55 against the under side of the bowl of the spoon, ejecting it from the die. The means shown is similar to that shown in the previously filed application above mentioned andis not claimed herein. I

- The spoon being freed from the lower die has a tendency to cling to the upper .die, and means are provided for ejecting or pushing down the spoon from the lower side of the upper dieafter the upper die has risen a certain distance. This is accomplished V by means of the block 30 being pushed down by the springs 31 at the proper time The block 30, however, is locked in its upwardposition so that itcannot respond to the downward push of the springs 31 until the cross head 17 which carries the upper die has risen to a predetermined height. This looking mechanism will now be described:

A spindle 58 passes loosely through the shank 21, its lower end being made fast to the block 30. Said s indle 58 is formed with an annular groove 5 in its periphery. Said groove 57 has a beveled or cam-faced upper surface 60. The aperture through the shank 21 through which the spindle 58 passes is enlarged toward the upper end of said shank, forming a recess 61 surrounded by an annular vertical lip 62 and a horizontal shoulder 63 which forms the bottom of said recess. Seated upon said shoulder 63 are four segmental jaws 65 having arc-shaped annular groove is of a height equal to the vertical thickness of said jaws 65. Said flange or lip 62 is screw-threaded on its inner periphery to be engaged by the threaded exterior of a washer 73 which holds the said jaws 65 on their seat, but without clamping the jaws to the seat, so that they are free to slide in and out radially in the chamber formed by said washer 73 and the recessed end of the shank '21 Each of said jaws has its inner end formed with a beveled upper corner 68 corresponding with the bevel of said annular groove. The exterior diameter of the ring formed by the outer peripheries of the combined jaws 65 in their closed position is less than the diameter of the recess 61 formed in the upper end of the shank 21 was to allow a radial movement of said jaws outwardly a suflicient distance to entirely clear the. inner ends of said jaws from the annular groove.

Each of said jaws has formed in its outer periphery a groove 69, the combined grooves in the peripheries of all of said jaws forming an annular groove when the said jaws are in closed position. An annular spiral spring 70 is seated 'in said grooves 69, said spring being under tension, tending to draw said jaws toward each other so that when said jaws are in alinement with said groove 57, the spring 70 will draw the said jaws into said oove and hold them therein with a yielding PI'GSSIIIB.

The cross head 17 .is formed with a slot 59, and passing through the slot 59 is a member 71 which is adapted to engage an adjustable screw pin 72. The mounting for said pin-72 is not shown. Said member 71 is supported in any suitable way to form a stop for the upper end of the spindle 58, the said support not being shown.

When the crom head 17 rises in its up-- ward movement, it is carried high enough for the upper end of the spindle 58 to engage the bottom of the said stop member 71 and then for a slight distance farther. By reason of the cam faced upper edge 60 of the annular groove and the cam faced upper edge 68 of the segment jaws, the continued upward movement of the cross head after the spindle 58 engages the said stop member 71, will cause the said segment jaws 65 to move radially outward against the pressure of the spring 70 and become disengaged from the annular groove 57. Said segments now being disengaged from the spindle 58, the further upward movement of the cross head will carry it upward with relation to the said spindle 58, and as the-forming die 25 is carried upward with the cross head while the block 30 stands still, the said block 30 will act as an ejector to push the spoon downward away from the forming die.

On the downward stroke of the cross head, as soon as the cross head is moved down far enough for the segments 65 to again come into alinement with the annular groove 57, the spring 70 will force the said segments toward each other again into said groove and lock the said segments to the spindle so that the block 30 will move with the forming die.

What I claim is:

1. In a machine of the. character de scribed, the combination of a pair of forming dies, one of which is reciprocable with relation to the other, a cooperatin block movably mounted in the said mova le die, a spring which engages with said block and tends to push said block outwardly with relation to said die, a spindle secured to said block and loosely mounted in said movable die and having an annular groove therein,

an apertured shank through which said spindle loosely passes, a plurality of segmental jaws mounted concentrically on said shank in such a mannervas to have a radial movement and which are adapted to engage with the annular groove in said spindle, and a spring which tends to press said segmental jaws radially toward each other and which holds the said jaws in engagement with said annular groove when the said annular groove is in alinement with said jaws.

2. In a machine of the character de; scribed, the combination of a pair of forming dies, one of which is reciprocable with relation to the other,-a cooperating block movably mounted in the said movable die, a spring which engages with said block and tends to push said block outwardly with relation to said die, a spindle secured to said block and loosely mounted in said movable die and having an annular groove therein, an apertured shank through which said spindle loosely passes, a plurality of segmental jaws mounted concentrically on said shank in such a manner as to have a radial movement and which are adapted to engage with the annular groove in said spindle, a spring which tends to press said segmental jaws radially toward each other and which holds the said jaws in engagement with said annular groove when the said'annular groove is in alinement with said jaws, said segmental jaws and said annular groove having cooperating cam-shaped surfaces whereby said die and shank may be moved rearwardly while the said spindle is held at rest, causing the said se ental jaws to move radially outward and% released from the groove and allowing the said block to be thrust outward by its spring.

3. In a machine of the character described, the combination of a pair of forming dies, one of which is reciprocable with relation to the other, a block movably mounted in the said movabledie, a spring which engages with said block and'tends to push said block outwardly with relation to said die, a spindle secured to said block and loosely mounted in said die and having an annular groove therein, a plurality of segmental jaws mounted concentrically on said movable die in such a manner as. to have a radial move ment and which are adapted to engage with the annular groove in said spindle, and a spring which tends to press said segmental jaws radially toward each other and which holds said jaws in engagement with the said annular groove when the said annular groove is in alinement with said jaws.

4. In a machine of the character described, the combination of a pair of-forming dies, one of which is reciprocable with relation to the other, a block movably mounted in the said movable die, a spring which engages with said block and tends to push said block outwardly with relation to said die, a spindle secured to said block and loosely mounted in said die and having an annular groove therein, a plurality of segmental jaws mounted concentrically on said movable die in such a manner as to have a radial movement and which are adapted to engage with the annular groove in said spindle, and a spring which tends to press said segmental jaws radially toward each other and which holds said jaws. in engagement with the said annular groove when the said annular groove is in alinement with said jaws, said annular groove and jaws having cooperating cam faces whereby when the said jaws are engaged in said groove and the spindle is held stationary, the said movable die ispermitted to be moved with relation to the spindle and the jaws are thereby given a radial movement outwardly from engagement with said annular groove.

5. In a machine of the character described, the combination of a pair of forming dies, one of which is reciprocable with relation to the other, a block movably mounted in the said movable die, a spring which engages with said block and tends to push said block outwardly with relation to said die, a spindle secured to said block and loosely mounted in said movable die and having an annular groove therein, a plurality of segmental jaws mounted concentrically on said movable die in such a manner as to have a radial movement and which are adapted to engage with the annular groove in said spindle, said jaws being each formed with a groove in the outer periphery thereof, and an annular spiral spring seated in said grooves and maintaining said jaws in engagement with said spindle under a yielding tension which causes said jaws to snap into engagement with the groove in the spindle when the said jaws are in alinement with said grooves, and which yields to allow spreading movement of the jaws when the 6. In a machine of the character described, the combination of a pair of forming dies,

one of which is reciprocable with relation to the other, a holder for said movable die having an apertured shank, a block mountedin said movable die and movable with relation thereto, a spring which tends to push said block outwardly with relation to said die, a spindle secured to said block and passing loosely through said die holder and shank and formed with an annular groove therein, a pluralitv of segmental jaws mounted concentricallv on said shank in such a manner as to have a radial movement with relation to said spindle and shank and which are adapted to engage with the annular groove in said spindle, and a spring which tends to press said segmental'jaws radially toward each other.

Z. In a machine of the character described, the combination of a pair of forming dies, one of which is reciprocable with relation to the other, 'a block mounted in. said mo,v-

able die and movable with relation thereto,

a spring which tends to -push said block outwardly with relation to said die, a spindle. secured to said block and passing loosely through said movable die. a plurality of segmental jaws mounted concentrically with eaner v relation to each other and with relation to i said spindle in such a manner as to have 'a' radial movement with relation to said spindle, a mount for said jaws carried by said movable die, and a spring which tends to press said segmental jaws radially toward each other and intoa gripping engagementto the other, a holder for said movable die having an apertured shank, a block mounted in said movable die and movable with relation thereto, a spring which tends to push said block outwardly with relation to said die, a spindle secured to said block and passing through said die holder and shank, a plurality of segmental jaws mounted concentrically on said shank in such a manner as to have aradial, movement with relation to said spindle and shank, and which are adapted to engage with said spindle, and a spring which tends to press said segmental jaws radiallv toward each other into gripping engagement with said spindle.

- In testimony whereof I aflix my signature.

- LEO D. JACOBY.

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