Page 1 of 7
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`EDWARDS LIFESCIENCES EX. 1123
`Edwards Lifesciences v. Boston Scientific Scimed
`U.S. Patent No. 6,915,560
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`

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`Page 2 of 7
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`Nov. 3, 1964
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`Filed July 9, "1952
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`‘ E. L. BAKER
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`» TUBE POINTER .
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`3,154,978
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`INVENTOR.
`ELLERY L. BAKER
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`ATTORNEYS
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`Page 2 of 7
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`

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`Nov. 3, 1964
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`Filed July 9, 1962
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`E. L. BAKER
`TUBE POINTER
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`3,154,978
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`4. Sheets-Sheet 3
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`Page 3 of 7
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`Nov. 3, 1964
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`Filed July 9, 1962
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`E. L. BAKER
`TUBE POINTER
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`3,154,978
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`4 Sheets—Sheet 4
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`Page 4 of 7
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`

`
`United States Patent Office
`3,154,978
`Patented Nov. 3, 1964
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`1
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`2
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`3,154,978
`TUBE PGENTER
`Ellery 1.. Baker, Warwick, 13.1., assignor to United Wire
`& Supply Corporation, a corporation of Rhode Island
`Filed Juiy 9, 1962, Ser. No. 208,592
`8 Claims.
`(Cl. 78-15)
`
`This application is a continuation-in-part of applica-
`tion, Serial No. 121,459, filed July 3, 1961, now aban-
`doned.
`
`This invention relates to a machine for compressing
`the end of a tube to form a so-called point thereon so
`that the tube may be easily inserted into a die for drawing
`the tube to reduce its diameter.
`Rotary swaging has been used for some time to reduce
`the end of a tube to form a so-called point thereon, but
`this has more recently given away to the use of dies for
`folding in the stock of the tube and then compressing the
`remainder of the tube to form a point thereon. The
`usual folding of a tube is from diametrically opposite
`sides by means of projections on dies which move to-
`gether, while other dies at 90° therefrom cooperate to
`move in the stock. The folded in portions usually con-
`tact and limit the reduction in size of the tube in the
`forming of a point. By these heretofore used methods
`a reduction of substantially 30 percent of the size of the
`tube was about the maximum. By reason of such a limit
`a large number of dies or pointing tools were needed for
`a full range of sizes. Approximately ten sets of dies were
`necessary for sizes of tubes varying from 1% inches to
`%6 of an inch.
`‘
`_A further dilficulty was encountered in reducing the
`size of a tube by compression in that the tube would exude
`through the junction between the members which engage
`the tube for such compression.
`Qne of the objects of this invention is to provide a
`pointing machine or device which will operate through a
`greater range of tube sizes than heretofore, such for in-
`stance as making one set of dies take the place of ten sets
`for the range of 1% to 9/16 which are heretofore used.
`Another object of this invention is to provide a single
`set of dies which will perform a reduction on a tube of
`over 100 percent of its finished point diameter.
`Another object of the invention is to adjustably select
`the amount of reduction of tube size to obtain the size of
`the point desired throughout a wide range.
`Another object of the invention is to select the point
`size desired by a dial operation.
`Another object of this invention is to provide a device
`which Wlll prevent stock of the tube being reduced from
`exuding through the junction between the dies which en-
`gage and press the tube to smaller diameter.
`Another object of the invention is to provide a surface
`on the reduced portion of the tube or its point which will
`afford a good gripping surface to be engaged by the tongs
`of a drawbench for pulling the tube through drawing dies.
`Another object of the invention is to provide a point
`on the tube which will be stronger than points whichihave
`heretofore been formed on the end of the tube and thus
`prevent ripping or tearing of the stock of the work in the
`area of the point or where it has been reduced from the
`normal size of the tube.
`
`Another object of the invention is to provide a device
`which will be much smaller than the old swaging machine
`which is utilized for tube pointing.
`With these and other objects in view, “the invention con-
`sists of certain novel features of construction as will be _
`more fully described and particularly pointed out in the
`appended claims.
`In the accompanying drawings:
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`FIG. 1 is an elevation partly in section of the machine
`equipped with this invention;
`FIG. 2 is a section on line 2——2 of FIG. 1;
`FIG. 3 is a perspective view of a point formed on a
`tube in accordance with the machine here shown;
`FIG. 4 is a perspective view of one of the jaws of the
`machine;
`Fit}. 5 is a sectional View of a modified form of machine
`and jaws;
`FIG. 5 is an end View of the tube partially formed by
`the modified form of jaws of FIG. 5;
`FIG. 7 is an end view of the tube point compressed
`until its opposite sides touch;
`FIG. 8 is a fragrnental section showing the location of
`the adjusting stop;
`FIG. 9 is a plan of the stop adjusting device;
`FIG. 10 is a section on line 10-10 of FIG. 9; and
`FIG. 11 is a schematic view of the control mechanism.
`In proceeding with this invention, 1 have provided a
`plurality of jaws or jaw members suitably guided in a
`housing or framework so as to move toward a common
`axis and a means for simultaneously moving these jaw
`members toward such a common axis ‘to place pressure
`upon a tube which may be placed in their path of move-
`ment. Each of the jaws is provided with a plurality of
`fins or leaves, and the edges of adjacent jaws have these
`fins or leaves intermeshing or interlocking so that one
`supports the other and in this manner the jaw members
`encircle the axis toward which they move so that when
`they engage a work tube positioned in the opening be-
`tween them and move into engagement with this tube, the
`tube cannot exude through the junction between the jaws
`as this interloclqing prevents this. The shape of the en-
`gaging surface of the jaws may be varied, and generally
`the shaping will be such that as the tube to be operated
`on becomes smaller, the number of fiat surfaces which
`are formed on the tube as compressed will be increased
`the smaller the tube becomes.
`In some instances I may
`provide a projection on these engaging surfaces so as to
`start the tube folding inwardly at certain locations. The
`general surface of the jaws may be such as to form a
`gradual taper on the tube so as not to strain or rip the
`stock of the tube by too an abrupt reduction.
`I also
`provide an adjustment which may be preset to limit the
`compression of the point to a certain amount that the
`desired size of point may be had.
`With reference to the drawings, 10 designates generally
`the tube pointing machine which comprises a skeleton
`housing of two heavy plates 11 and 12, each of which has
`a cutout in the shape of a cross with bars 14, 15, 16,and
`17 extending between them and located on the ends of the
`cross. These bars are provided with a head 13 at the for-
`ward end and a head 19 at the rear end. The head 18
`has a smaller plate 2% between it and plate 11, and both
`have openings 21 at their centers through which the work
`may be positioned to be operated upon. An opening in
`the head 19 provides for the piston rod 22 to extend
`through from the hydraulic cylinder 23 for applying pres-
`sure to operate the jaw members.
`In the present illustration of the device there are four
`jaw members arranged in diametrically opposite pairs,
`and as seen in FIGURE 2, one opposed pair comprises
`the jaws 24 and 25 while there is another opposed pair
`comprising jaws 26 and 27. Spaced members 28 and 29
`engage the inner edges of the cutout cross and are welded Z
`to the plates 11 and 12 at these locations to provide guide
`ways for the jaw members 24- and 25 directing their path
`of sliding movement toward and from the axial center of
`the plates 11 and 12. Similarly, plates 30 and 31 are sup-
`ported fromthe plates 11 and 12 to provide guide ways
`for the jaw members 25 and 27 directing them ina sliding
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`Plage 5 of 7
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`Page 5 of 7
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`3,154,978
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`of?
`movement toward and from the same common axis of
`the plates 11 and 12..
`Each of these jaw members is provided with an inclined
`surface 32 as seen in F GURES 1 and 4 on its back or
`surface away from the above mentioned common axis,
`and these surfaces are engaged by wedge shaped mem-
`bers, 34 for jaw member 24, 35 for jaw member 25, 36
`for jaw member 26 and 37 for jaw member 27. These
`wedge shaped members extend from a common head 38
`carried on the end of piston rod 22, and each of these
`wedge shaped members slide along its corresponding bar
`14, 15, 16 and 17 so that as the head 38 and the Wedge
`shaped members 34 to 37 are advanced to the left as
`shown in FIG. 1, they will force the jaw members 24, 25,
`26 and 27 inwardly toward a common axis. These jaws,
`of course, are supported at their forward end against the
`plate 26) so that they will not move to the left as the
`wedges move to the left, and consequently the jaws will
`be forced inwardly.
`A pin 40 extends through a hole 41 in each of the jaw
`members and also through slots 42. in the guide plates,
`and springs 43 engage the opposite ends of this pin and
`also anchors 44 on the plate 11 which will spread the
`jaws or move them outwardly when the wedges and head
`38 are moved to the right as shown in FIG. 1. The in-
`clination of the springs hold the jaws against plate 261*.
`Lubrication may be provided for the sliding engagement
`of the jaws and the wedges as shown at 46 and 47 in
`FIG. 1.
`One of the jaws, 25 for example, is shown by itself in
`FIG. 4, and as there seen it consists of a body block 59
`with a plurality of slots 51 cut into its work engaging
`surface to provide a plurality of fins or leaves 52. The
`slots 52 are substantially the same axial dimension as the
`same axial dimension of the fins. The edge surface 53
`of these leaves is shown as made up of a plurality of flat
`surfaces, and each is formed with a \/-shape formation
`54 at
`the mid portion thereof,
`the arrangement being
`symmetrically arranged with uniform flat surfaces, there
`being here shown eight such uniform surfaces. Each
`four jaws has a gradually larger V-shape formation in the
`leaves at its entrance end so as to provide a tapering sur-
`face gradually increasing along the surfaces so as to pro-
`vide surface 55 on the tube (see FIG. 3). At the inner
`end of one of the blocks, for example that block shown
`at 25, a stop plate 63 is provided which is held to the jaw
`25 and is of a length to extend across the opening 61
`formed between the jaws of the device.
`It is this opening
`61 into which the work is inserted to be engaged by the
`opposite pairs of surfaces of the jaws as they are moved
`inwardly.
`The jaws 24 and 25 are substantially duplicates so far,
`as the slots 51 and leaves or fins 52 are provided, whereas
`the jaws 26 and 27 are so slotted that their leaves 52 will
`be at the locations of the slots 51 and of substantially the
`same axial dimension as the slots on the jaws 24 and 25.
`Thus as the jaws are arranged in their housing, there will
`be opposed tube engaging surfaces on opposite pairs of
`jaws and also an interlocking of the fins or interleaving
`arrangement between the edges of adjacent jaws, and the
`fins or leaves 52 of the jaws 26 and 27 will extend into
`the slots '51 of the jaws 24 and 25, whereas the leaves
`52 of the jaws 24 and 25 will extend into the slots 51 of
`the jaws 25 and 27. This is indicated in FIGS. 2 and 5.
`With this arrangement of the jaws the work will be
`inserted into the opening 61 until it engages the stop plate
`59. Thereupon the piston in the cylinder 23 will be
`actuated to force the piston rod 22 carrying the head 38
`and wedges 34- to 37 to the left as shown in FIG. 1, and
`thereby forcing the jaws in their interleaving arrangement
`inwardly so as to compress the work or tube into a smaller
`diameter or size as shown in FIG. 3 to provide a point
`65 on tube 56. At the same time that this compression
`occurs, the fins or leaves by reason of their applying pres-
`sure in localized areas will cause the tube to be somewhat
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`indented as at 67, and this indentation will provide a
`rougher surface on the point 65 thus formed which will
`give a better grip for the tongs of the drawbench to pull
`the tube through the drawing dies.
`This arrangement provides for a large adjustment of
`point sizes.
`In each case regardless of size there will be
`the same folding pattern provided on the tube for each
`tube size. The dies, however, may vary somewhat in
`shape to accomplish the same general result.
`In some cases it is desirable to provide projections 70
`as seen in FIG. 5 on each of the jaw members so that as
`the jaw members are brought inwardly, an indent will be
`provided as at 71 (see FIG. 6) to start the stock inwardly
`at this location.
`In this event a fold such as shown in
`FIG. 6 will be provided. Other than this the jaws of
`FIG. 5 are the same as the jaws of FIG. 4 and the mech-
`anism the same as heretofore described.
`In order to actuate the piston 74 in cylinder 23 to move
`the rod 22 and the wedge shaped members 34, 35, 36
`and 37 to close the jaws Z4, 25, 26 and 27 on the work,
`I have provided a pump 75 (FIG. 11) driven by an elec-
`tric motor 76. This pump will pump liquid, such for
`example as oil, through the conduit 77 into the cylinder
`23 to force the piston '74 in the desired direction, to the
`left as shown in FIG. 11, and the further the piston is
`forced to the left, the more the jaws will be moved in-
`wardly towards the axial center. When the pressure of
`the oil is released, a spring 73 will force the piston in the
`other direction, permitting the springs 43 to open the
`jaws.
`In order to provide for a certain size of point, I control
`the amount that the piston may move in the cylinder by
`providing a control in the electric circuit which supplies
`the motor 76 which, in turn, drives the pump 75. This
`electric circuit is designated generally 80 (FIG. 11) and
`obtains power from a source 81 with a foot switch 82
`interposed in the supply line 83. Also interposed in this
`line is a switch 84 which is located on the machine and
`is normally closed, although it may be opened to inter-
`rupt the circuit and stop the motor 76.
`Interruption of
`this circuit is obtained by means of a stop pawl 85 carried
`on a rack bar 86 which may be adjusted by a pinion
`gear 8'7 by means of a dial 8% carried on the shaft 89 of
`the pinion gear. This rack slides through a slot 90 in a
`bar 9'7 which is fixed on the head 38 by means of mount-
`ing screws 91 so that by turning this dial 825, the stop 85
`may be positioned at a desired point so that when it con-
`tacts the anti-friction roller 92 of the arm 93, it will open
`the switch at 84, interrupt the circuit and stop the motor,
`thus stopping pumping of the oil into the cylinder which
`actuates the jaw members. At the time this occurs, the
`operator will release pressure on the foot switch 82, per-
`mitting the circuit to be open until return of the piston
`to starting position under action of the spring. By gradu-
`ating the dial 88 as at 95 with some fixed indicia as at
`96, I may set the stop 85 so that the desired dimension‘
`of pointer may be had.
`I claim:
`1. A tube pointer comprising a housing having an open
`end, a plurality of pairs of opposite work engaging jaw
`members movably mounted in said housing, means to
`guide said jaw members for radial movement toward a
`common axis extending through said open end, means to
`simultaneously move said jaw members relative to said
`housing toward said common axis, said jaw members each
`having generally V-shaped surfaces partially embracing
`the work and positioned at intervals lengthwise of said
`axis which surfaces of the jaw members complement each
`other to encircle said axis and provide an axially extend-
`ing opening for the reception of the work, said opening
`varying as to diameter depending on the position of said
`jaw members relative to said housing, said jaw members
`raving a plurality of intermeshing leaves at their adjacent
`edges which slide one upon the other as movement of the
`jaw members occurs toward and from said axis whereby
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`Page-i6of7A
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`Page 6 of 7
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`3,154,978
`
`5
`as the work is being compressed by said jaw members,
`exuding of the work between the jaw members is pre-
`vented.
`
`2. A tube pointer comprising a housing having an open
`end, a plurality of pairs of opposite work engaging jaw
`members movably mounted in said housing, means to
`guide said jaw members for radial movement toward a
`common axis extending through said open end, means to
`simultaneously move said jaw members relative to said
`housing toward said common axis, said jaw members each
`having generally V-shaped surfaces partially embracing
`the work and positioned at intervals lengthwise of said
`axis which surfaces of the jaw members complement each
`other to encircle said axis and provide an axially extend-
`ing opening for the reception of the work, said opening
`varying as to diameter depending on the position of said
`jaw members relative to said housing, each pair of jaw
`members presenting diametrically opposite surfaces in a
`plane at right angles to the axis to engage the work, said
`jaw members having a plurality of intermeshing leaves at
`their adjacent edges which slide one upon the other as
`movement of the jaw members occurs toward and from
`said axis whereby as the work is being compressed by said
`jaw members, exuding of the work between the jaw mem-
`bers is prevented.
`3. A tube pointer comprising a housing having an open
`end, a plurality of work engaging jaw members movably
`mounted in said housing, means to guide said jaw mem-
`bers for movement
`toward a common axis extending
`through said open end, means to simultaneously radially
`move said jaw members relative to said housing toward
`said common axis, said jaw members having surfaces ex-
`tending lengthwise of said axis which surfaces of the jaw
`members complement each other to encircle said axis and
`provide an axially extending opening for the reception of
`the work, said opening varying as to diameter depending
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`on the position of said jaw members relative to said hous-
`ing, means including a power means from a source to
`move the jaw members toward said common axis to com-
`press the work, and adjustable means positively movable
`with the jaw operating means to control the operation of
`said power means to limit the compression by the jaw
`members.
`
`4. A tube pointer as in claim 3 wherein said adjustable
`means includes a rotatable part to manually effect such
`adjustment.
`5. A tube pointer as in claim 3 wherein the work en-
`gaging surfaces of said jaw members have a projection
`extending therefrom toward the said axis.
`6. A tube pointer as in claim 3 wherein the work en-
`gaging surfaces of said jaw members are inclined axially
`relative to the said axis to provide a tapering reduction
`of the work.
`7. A tube pointer as in claim 1 wherein the dies co-
`operate to provide an opening for the tube which is of
`symmetrical shape regardless of the position of the dies.
`8. A tube pointer as in claim 1 wherein the dies co-
`operate to provide an octagonal opening for the tube
`which is of octagonal shape regardless of the position of
`the dies.
`
`References Cited in the file of this patent
`UNITED STATES PATENTS
`
`810,241
`1,418,026
`2,394,841
`2,438,999
`2,458,587
`2,514,507
`2,947,081
`3,068,929’
`
`Wilstrom _____________ __ Jan. 16, 1906
`Schmidt _______ __,____ _- May 30, 1922
`Bugg ________________ __ Feb. 12, 1946
`Hartley _______________ __ Apr. 6, 1948
`Gogan _______________ __ Jan. 11, 1949
`Mueller ______________ __ July 11, 1950
`Clevenger ____________ __ Aug. 2, 1960
`Rowell ______________ __ Dec. 18, 1962
`
`Page 7 of 7
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