US1315367A - Counter-blank-cutting machine - Google Patents

Description

L. 1. JACQUEMIN. .COUNTER BLANK CUTTING MAcHlNE.

AEPLlcATToN man MAUS. 191'1.

. Patented sept. 9,1919.

4 SHEETS-:SHEET I L41. JACQUEMIN. i 'couNTEnvLANK cuTmG MACHINE.

\ APPLICATION FILEDVMAYis, m17.

n I. 4, SHEETS-SHEET 2 'Fig 6"` MN5/V70@ rma commun P|.ANnGRAP1Icu wAsNlNa'roN, D. c.

Patented' sept. 9,1919.

\ L. I. IACQUEMIN.

i COUNTER BLANK CUTTING MACHINE.

APPLICATION FILED MAY 19| 1917.

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" `Mmmmsem. 9,1919.

4 sHEnssHEET s.

' l 1.1. 1AcQuEM.lN. v v co'umfLANK CUTTING MACHINE;

APPLICATION FILEDMAY?. |917.

'nuz coLuA'mlA PLANounAnn C0., WASHINGTON. D. c.

`operations iin'irnn sfinins rniriinr ornicn.

LOUS .J1 dACQUElVlN, 0F KENNEBUNK, MAINE, ASSIG-NOR TO'ELLIOTT ROGERS, OF KENNEBU'NK, MAINE.

continentaux-CUTTING MACHINE.

Specification of Letters Patent. Patientin@ Sept. 9,1919.

Application filed May 19, 1917; `Serial Nor`l9`g75'.

To all 107mm t may Concern: i

Be it known that l, Louis J. JACQUEMIN, a citizen of the United States, residing at Kennebunk, in the county of York and `State of Maine, have invented certain Improvements in Connter-Blank-Cutting Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicatinglike parts in the several figures.`

This invention relates to machines for making heel stiffeners or counters for boots and shoes and is particularly concerned with the preparation of fiber counter blanks for the molding operation. Y

For the purpose of explaining more clearly the objects of this invention certain steps in the processof making counters are illustrated in the `lirst sheet ofthe accompanying drawings, in which:

Figure 1 is an angular view of a rough counter blank; i

Fig. 2 is a cross sectionalview on the line 2 2, Fig. 1; Fig. 3 is an angular counter blank; and` Figs. 4 and 5 are cross sectional views taken. respectively, on the lines delland 5--5,l3`ig.8.

As is well understoodby those skilled in thisart, a large'percentage of the counters used in slices, particularly in the lower priced shoes, are made of material known in the trade as fiber or leathei-board. The sheets of this material are first cut up view of a fini shed into strips of the' proper width for the.

counters, the cutting being done by knives which bevel the opposite edges ofthe strip, and these strips are then cut up into sections ofthe required length. One of these sections or rough blanks is indicated at A in Figs. 1 and 2, the beveled surfaces at the edges being shown at a and o. This rough blank is then subjected to further cutting which produce the finished blank B, Fig. 3. sist in cutting the blank to the required curved outline, making a beveled face cv along the upper curved edge of the blank and forming long bevels al at the opposite ends of the' blank. The formation of the bevels rl thinsthe entire end portions of the blank and makes these portions more flexible thanis the body of the blank. In the mold- These operations con-` in cutting the blank A to form the curved edge and simultaneously therewith forming the beveled surface` c, and the second operation consistingin forming the wide bevels ci on the two end portions of the blank. The firstoperation usually is performed by placingthe rough blank A in a suitable matrix provided with a shearing member having an outline corresponding to the curved outline desired in the finished blank and shaped to deflect the margin of the blank adjacent to this curved edge into thepath of travel of a knife. The knife and matrix are then relatively moved to cause the knife to bevel oft' the defiected stock and shear the blank `against the shearing` member with which the matrix is provided. The `blank is next placed in another machine usually equipped with a pair of planes or shaving knives which'form the wide bevels (Z at the opposite ends of the blank. The lirst of these operations usually is referred to in the trade as cutting and beveling the blank; and the `second operation, namely, that of forming the bevels (l, is termed releasing77 the blank.

While itis possible to bevel and release a leather counter blank at a single operation, the machines by which this operation is performed are not adapted to perform thesame operations on a iiber or leatherboariil blank because of `the peculiar laminated or ply structure of `this n'iaterial, and it has always been the practice, so far as I am aware, to

perform thereleasing operation on a liber *blank A independently `of the cutting and beveling operation. It is the chief object of `the present invention to devise a machine which will 'perform bothof these operations on liber counterblanks. y 1

The` invention in its preferred form involves a novel form of matrix and anovel constructioiuof knife, these devices being arranged to coperate with eachother to l so lOO

produce the desired result. VThe several features of the invention will be readily understood from the following description ofthe preferred embodiment thereof and will be particularly pointed out in the appended claims. Y

Referringnow to the remaining figures of the 'accompanying drawings:

Fig. 6 is a front elevation of an old form of counter cutting` machine modified to embody the present invention; Y

F ig..7 is an elevation of the novel form of matrix and knife provided by this invention;

Fig. 8 is a vertical cross sectional view on the line 8-8, Fig.7

Fg- 9., is a vertical cross sectional view on Vthe line 9 9, Fig. 7; and

Fig. 10 is a central crosb` sectional view through the parts of the machine shown in Fig. 6.

The drawings show this Yinvention as applied to the cutting machine shown and described in Fatent- No. 513,242, granted J anuary 28, 1894, to George F. Moore. Machines constructed substantially in accordance with the disclosure made in this patent have been in use for a great many years,

these machines, however, beingk equipped with an automatic feeding mechanism that feeds rough blanks one at a time into the cuttingV mechanism. For a complete understanding of the construction and operation of this machine reference should be made to said patent. For the purposes of the present application Vonly a very brief description of the machine is necessary. The machine shown includes a frame 2 provided with ways in which across head 4 reciprocates. lThis cross head carries a die or matrix 6; and a knife 8, which coperates with the matrix, is bolted to a cross piece 10 that forms part of the machine frame. A clamp 12 is mounted upon a bracket 14 which is pivoted to the slide or cross head Y4 at 16 so that this clamp Ycan swing relatively to the Vmatrix but reciprocates with it.. Connecting rods 18, pivoted to opposite sides of the slide 4 and operated by eccentric pins on `disks 20 that rotate with the shaft 22, give the matrix its reciprocating movement toward and from the stationaryknife 8.V As the matrix is moved up and down the clamp 12 is moved in and out relatively to theV matrix to clamp and release the blank by means vof cam rolls, one of which is shown at 24, Fig. 10. These rolls are mounted on studs supported in ears dependingY from the bracket 14 and they run in stationary cam paths 26 formed in a partof the machine frame, this path being designed toV move the clamp at the desired times in y the stroke of the matrix. The blanks may befed into the machine either automatically or byV hand and 'gages 28 are provided to position the blanks properly in readiness to be clamped in the lnatrix by the member 12. All these parts are constructed and arranged to operate substantially as shown iu the Moore patent, above designated, and the illustration and description of them here are made merely for the purpose of making a clear disclosure of one embodiment of the present invention.

The matrix, as best shown in Figs. 7, S and 9, comprises a shearing member 30 shaped to conform to the desired outline of the curved edge of the finished blank and mounted in a slot 81 formed in the bed of the matrix. A series of bolts 32, threaded through the outer wall of this slot 31, bear against the member 30 and hold it in its operative position. The matrix is provided with a central depression 34 which eorre spends in shape and dimensions with that of 'the central raised part of the finished blank B.- t is also provided with a relatively narrow raised portion 36 just back of the middle part of the shearing member 30 and with wide raised yparts 38 or shoulders near the opposite ends of the matrix and into which the ends of the part 36 merge.

The knife 8, as clearly shown in Figs 6 and 7, has a forward cutting edge c and two lateral cutting edges f that extend diagonally backward from the ends of the portion e so that the part e corresponds to the top and the parts f to the two sides of a trape- Zoid. The entire cutting edge lies in a plane which, in this machine, is the plane of the shearing edge of the member 30, this plane being parallel to the plane of the reciproeating movement of the matrix. It will be noted that the part e of the edge of the knife 8 is shorter than the narrow raised portion 36 of the matrix and that the knife, at its base, is slightly longer than the distance between the extreme ends of the curved shearing member 30. It will also be seen that when a blank, such as that shown at A in Fig 1,is properly placed in the matrix 6 and is clamped in the matrix by the plate 12, it will rest in the matrix substantially as shown in Fig. 7 overlying the entire length of the cutting.;` edge of the shearing member 80. The central portion of this blank will be depressed below the plane of the shearing edge of the member 30 by means of the clamp 12, as clearly shown in Figs. 8 and 9, but the narrow marginal portion along the curved edge of the blank will be deflected into a position above the plane of the shearing edge of said member 30, as will also the wide end portions of the blank that overlie the shoulders 38 r navette? the matrix, and shearing off the parts of the blank that lie above `the plane of the shearing edge of the member 30. Figs. 7 and 8 show `the parts when the edge c of the knife has cut about half way througlrthe upper margin of the blank. The knife preferably is `so proportioned that after it has partly completed the beveling of the upper margin of the blank, the inclined edges f of the `knife will begin to cut into the blank near its opposite ends and immediately above the inner edges of the shoulders 38 of the matrix. The knife is shown in Figs. 7 and 9 just after it has begun to cut into the opposite end portions of the blank to form the beveled surfaces d of the finished blank (see Fig. 3). As the matrix 6 continues to move downwardly and thus transfers the points of `operation of the knife for ward across the blank A, the forward edge c offthe lkni fe will `first complete the formation of the bevel c, nFig. 3, of the blank and cut the blank to the outline of the edge of the shearing member 30 and the points of operation of thetwo opposite edges f will then travel along theshearing blade 30 in opposite directions toward the ends of the `blank and over the shoulders 30 until. the entire cutting and beveling operations have been completed.

It will now be understood that this single operation not only cuts the blank A to the desired outline,`but`that the part e of the knife forms the bevel c andthe parts f form the two bevels CZ at the opposite ends of the blank. In other words. this mechanism at one operation cuts the blank to the desired outline, bevels it and releases it. Attention is particularly directed to the fact that, by so proportioning the knife that the edge c begins to form the bevel c before the lateral edges begin to form the bevels (Z, the knife is enabled to aid the clamp 12 in holding the blank properly in the matrix while the cutting operations on the blank are being performed. This arrangement also tends to equalize the forces exerted on the blank by the knife, since the two lateral edges f act simultaneously on the opposite end portions of the blank and cut in opposite directions toward the ends of the blank, so that tendency of one lateral edge to crowd the blank toward the end of the matriX is counteracted by the corresponding tendency of the opposite lateral edge of the knife. That is, the lateral edges of the knife act on the blank to urge the opposite ends of the blank away from each other but since the knife cuts both ends of the blank simultaneously, the drag of one edge tending to move the blank endwise will be equaliZed by the drag of the other edge tending to move the blank endwise in the opposite direction. The edge portion e of the knife bevels the blank in exactly the same way that doesthe corresponding ledge .of `the knife in the old types `of machines; but the lateral `edges f operate on `the blank by makingdraw cuts inthe opposite end portions of the blank andthe knifethus is enabled to cut the blank smoothly and easily to formsmooth beveled surfaces d onthe blank, without a-nyoffthe tendency to tear and 'dig the blank whiclrhas `been eXperienced in the efforts heretofore made along this line. i

Itwill be noted that `thevknife `S is recessed behind its cutting edge, as clearly indicated at g in Figs. 8 and 19, so that ample clearance is provided for the cutting edge of the knife. i

I`believe that I am the 1first to devise a machine in which a fiber or leatheroid connter blank can be beveled and releasednt a single operation. It is obvious thatlthe machine `of this invention eliminates@ the` neces sity `for a separate machine `for performing the releasing operationand lthat it saves one handling of the blanks'wvhich `heretofore `has been required. i

l. In a counter blank cutting machine, the combination of a knife, a `matrixhaving a curved edge, and :means for relatively moving said `knife and matrix `to enable the knifeito operateion ablanklinhthematrix, said matrix being constructed todefleet anarrow `marginal portion along `the upper curved `edge of the blank and `wide end portions `of the blank` into position to be cut by the knife, and said knife having portionsshapedto bevel said deflected `edge and end portionsiand to cut said end portions in directions toward the opposite ends of 'the counter.

2. -In a counter blank cutting machine, the combination of`a matrix comprising a shearing member shaped to conform to the curved upper edge of a counter blank and having portions constructed to deflect the marginal portion of the blank 'along said edge and wide portions near the opposite ends of the blank into a position above the plane of said shearing member, a clamp operative to hold a blank in said matrix. a knife having a cutting edge corresponding substantially to the outline of the top and sides .of a trapezoid and coperating with said matrix to cut away the parts of the counter blank that project above the plane of said shearing member, and mechanism for relatively moving said knife and matrix.

3. In a counter blank cutting machine, the combination of a knife having a forward c-utting edge extending at substantially right angles to the direction of the cutting stroke and having lateral edges extending dia-gonally backward from the ends of said forward edge, a matrix constructed to deflect a narrow portion at the upper edge of a counter blank into the path of said forward cutting edge and having parts shaped to de* fleet Wide end portions of the blank into position to be beveled by said lateral edges, means for holding a counter blank in said matrix, and means for relatively reciprocao ing said matrix and knife.

et.. Ina counter blank cutting machine, the combination of a matrix, a clamp arranged to hold a counter blank having a curved upper edge in said matrix, a knife, and mechanism for giving said matrix and knife a 'relative movement to enable the knife to operate on the blank held in the matrix, said knife and matrix being constructed and arranged to cause the knife to bevel the middle pcrtionof the curved edge of the blank and thereafter to release the ends of the blank, and sai-d kniferbeing Yoperative to aid the clamp in holding the blank in the matrix While the releasing action is taking place.

' 5. In Ya counter 'blank cutting machine,

Y the'combination of a matrix, means for holding a4 counter |blank `in said matrix, and a cutting mechanism Y coperating with said matrix While the blank is held therein to bevel the upper vedge of the bl ank and to rele-ase the end portions of the blank, said mechanism being arranged to start said bev- 'eling operation just before it begins said releasing operation.

` 6. In a machine for cutting fiber counter blanks, the combination of a matrix comprising a shearing member shaped to conform to the curved upper edge of a counter blank and having portions constructed to deflect the marginal portion of the blank along said edge and the entire end portions of the bla-nk into a position above the plane of said shearing member, a clamp for holding said blank in said matrix, and cutting means operative on the blank While it is in said matrix to cut aivay said deflected portions and thus to bevel said upper edge and also to release both ends of the blank, said cutting means being constructed and arranged to perform Said releasing operation by making substantial simultaneous cuts across the end portions of the blank in directions urging the opposite ends of the blank away from each other.

7. In a machine for cutting fiber counter blanks, the combination of a matrix coinprising a shearing member shaped to couform to the curved upper edge of a counter blank and having portions constructed to deflect the marginal portion of the blank along said edge and the entire end portions of the blank into a position above the plane of said shearing member, a clamp for hold- VVing said blank in said matrix, and cutting means operative on the blank While it is in said matrix to cut away said deficcted portions and thus to bevel said upper edge and also to release both ends of the blank, said cutting means being constructed and arranged to perform said releasing operation by making draw cuts toward the opposite ends, of the blank substantially simultaneously, whereby the drag of the cutting means on one end will be equalized by the drag on the other end.

In testimony whereof I have signed my name to this specification.

LOUIS J. JACQUEMIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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