WO1998024962A1

WO1998024962A1 - Needle-like scissors tool for use in embroidery and the like for openwork techniques of cutwork adapted to transform a needle carrier rod

Info

Publication number: WO1998024962A1
Application number: PCT/EP1996/005345
Authority: WO
Inventors: Vanna Ciapparelli; Giuseppe Piantadosi
Original assignee: Confezione Venere Di Ciapparelli Vanna
Priority date: 1995-11-30
Filing date: 1996-12-03
Publication date: 1998-06-11
Also published as: IT1282343B1; EP1021604A1; ITVA950023A1; EP1021604B1

Abstract

A needle-like cutting tool (1) whose bottom end (1') is shaped as a substantially diametral blade (1') is adapted to perform cuts in the direction of its assemblage to the needle bore (7') of the carrier bar (7). A template (6) is provided with oriented openings to tutor the operator in the application of the oriented needle-like cutting tools (1) to the head needle carrying bars (7) thereof. To improve the efficacy of needle-like cutting tool (1) its blade is made fishtail-like. Thus the blades of the tool cut the fibres giving lieu to a vertical force component which is reduced and centripetal. The tool (1) may be placed in any direction in order to provide warp cuttings (V), weft cuttings (O) or cutting (S) of both, in the cloth (80). Openwork by cutwork can be arranged together with pattern with needle (01) and thread.

Description

NEEDLE-LIKE SCISSORS TOOL FOR USE IN EMBROIDERY AND

THE LIKE FOR OPENWORK TECHNIQUES OF CUTWORK ADAPTED TO TRANSFORM A NEEDLE CARRIER ROD

The present invention relates generally to machine embroidery intended as addition of pattern or other ornamental effects to a fabric by the use of needle and thread. In particular relates to the provision of similar effects by its ancillary openwork techniques of cutwork wherein holes are cut in the cloth and their edges and borders embroidered or decorated with needle and thread. When such openwork by cutwork was handmade the cutting in of holes of any size and shape as a rule was made by scissors before bordering or embroidering of their edges, in order to obtain neat embroidered fresh edges. Exceptionally the holes were cut in by scissors after embroidering thereof, Of course, the result of cutwork made afterwards was poor since the edges provided by the scissors were forcibly imperfect and not constant, in that comprised by the cut thread ends projecting from the finished embroidery border left by the scissors handled by an operator worried to cut not enough or too much. For obvious reasons it was impossible to cut in small holes after embroidering with needle and thread

At the present state of the art the with embroidering machines openwork by cutwork is almost impossible. In particular it is impossible to cut out any cloth section. Any cutwork is to be delaied to when the uncut in goods embroidered with needle and thread leave the machine and handmade with the drawbacks hereabove set forth but with an incidence much more detrimental. In fact the market is prepared to accept the cost and the quality of completely handmade embroidery but refuses industrial embroidery whose cost and quality are highly determined by the need of having cutwork handmade cutting in a machine made pattern. The market refusal is not due only to a choice of the consumer but rather to a difficulty of the manufacturer to harmonize the big quantities of cutworkless goods obtainable from the machines and the enormous respective quantity of labour necessary to cut in by hand with scissors any embroidery hole. Once the same people who made the cutwork provided also the embroidery with needle and thread thus a manufacturer engaged a working team in agreement with the average costumer demand without worrying if the work to be made was more to be done with needle and thread or cutwork beforehand or afterward. Anything was easy and the costumer recognized the conformity of manufacturing attributes such as price, quantity, quality and delivery. On the contrary for the industrial manufacturer the attribute of delivery is a real quiz since it is calculated that for the cutwork of each machine whose production includes embroidery relatively easy to to provided with needle and thread and relatively difficult to cut in at least twenty people are necessary. However such a higher number of people could not permanently engaged since the demand of openwork embroidery is a variable. Thus only the manufacturers in a position of providing enough labour for openwork by hand by cutwork survived.

On their side the manufacturers of embroidering machines (three or four in the world), being unable to provide the machines with openwork by cutwork means, enriched the embroidering machines of heads and each head with needle bars, in order to suggest a substitution of openwork effects with a richer variety of colours and threads or combination thereof. The only finding thought out by the embroidery machine manufacturers to remedy means capable of any kind of openwork was the optional provision of a piercing tool which was called borer to be applied to one of the bars of each head. Such borer is in the form of triangular or square pyramidal sharp pointed instrument capable of boring through the cloth to be embroidered as well as its backing paper. The needle carrying bar carries on an axes parallel to the needle axes a borer carrier. The bar of the head provided with such borer is left without needle its thread detector is rendered inactive and its pressing foot operates distantly. Even the borer hole provided in plate is larger than that in the needle plate holes; thus the borer may have a cross section dimension larger than the diameters of the needle and of the needle plate hole. The corner edges of borer are arranged as blades . When the borer pierces the cloth leaves a series of flaps, whose number is the same as the sides or corners or cutting edges of pyramidal tool. When the borer is moved in the direction of its blades the flaps are enlarged. This can be made only slightly up to a maximum total dimension of ten millimetres otherwise it is impossible to embody such flaps in the embroidery satin. When the cloth and or the backing paper are rather thick with respect to the satin width the capability of the latter to contain the flaps is reduced and only the flaps strictly resulting from the mere sole boring through. Thus the borer remedies only the problem of very small hole which cannot provided with the scissors after embroidery. Any other larger openwork was to be made by hand cutwork. Since the borer provides a piercing action it is almost impossible to obtain thereby a reasonable openwork by cutwork For a reasonable openwork by cutwork a continuous cut capable of severing a cut out cloth slip is necessary. Even in case that the severing by a series of borer punching is successful difficulties arise which renders this kind of cut unpractical for any embroidery result. I.e.: a) The cut edge resulting by a series of borer punching is clearly unpresentable; b) The cut resulting by a series of borer punching severs an unwanted cloth section which must be removed ; c) in case that the cut is made at the beginning or before any openwork embroidery satin is provide in order to embody or hinder therein the unpresentable series of borer punching; while no means are available on known machines to remove the unwanted slip and to dispose it so that embroidery can be prosecuted. d) in case that the cut is made as last step of the embroidery process or at least after any openwoi-k embroidery satin is provided no problem arises to remove the unwanted slip and to dispose it . However the unpresentable cut edge stands projecting out from the finished satin; e) in both cases the advantages are largely impaired by drawbacks. Summarizing the aforesaid about the present state of the art it is noted:

1) with the present embroidery machines and techniques it is impossible to execute any openwork by cutwork;

2) any openwork by cutwork is to be delaied to when the openworkless embroidery- leaves the machine and the cutwork handmade by scissors;

3) of course it is also impossible with known embroidery machines to perform other openwork-like cutwork such as button holes, eyepocket openings, outward catting of labels etc

4) Very small openwork which cannot be cut in by scissors may be prepared by piercing the cloth with a borer applied to one bar of each head parallel to the needle whose performance is that of providing a number of cloth and paper flaps to be included in the surrounding satin. This is possible in as much as there is a certain relation between the volume of the flaps and the extension of the satin so that the latter can contain the former.

The invention as claimed is intended to remedy these drawbacks. The inventors, with ingenious perception, have conceived a needle-like scissoring tool for use in embroidery and the like for openwork techniques of cutwork adapted to transform a needle carrier rod in a scissoring device and process and means for making it and using such device, with the features contained in the claims.

In accordance with a preferred embodiment of the present invention to improve the efficacy of needle-like cutting tool (1) its blade is made fishtail-like to provide an action equal to the action provided by scissors blade the only difference being that the scissors blade pairs operates longitudinally to the cloth to be cut instead of an upright approach and the blade closure is perfecxtly equivalent to the descending movement provided by the needle carrier bar of a stitching device. In practice in quite a lot of cases the scissors are used for cutting particularly thin sheet materials with open blades pushing the blade corner against the sheet to be cut. The arrangement is such that the scissors-like pair of blades provide a longer cutting edge so that the two sides thereof provide a joint action which is even better than the action provided by the scissors since the scissors pivoted blades edges in no case can be complanar as are those of needle-like scissors tool of the present invention. Thus the scissors-like blades of the tool of the present invention cut the fibres giving lieu to a verical force component which is reduced and centripetal in accordance with the formula: n

F_τ= cutting force

R_F= resistence of the thread fibres o to cutting rip = number of thread fibers to be cut

α = blade angle with respect to the needle-like scissors tool axis

Cγ - cutting coefficient (grinding)

R_v= Vertical reaction (perpendicular to the cloth)

R₀= Horizontal reaction (on the cloth plane)

In accordance with another preferred embodiment of the invention when the openwork to be cut in the cloth is tortuous, the edge of the cutting blade of the

needle-like cutter is made bent and is fastened to the head of the machine oriented by 90² or 45² according to the numbber of bars engaged if they are two or four Forma

For making the needle-like scissors tool ( 1) it is started from a two-stepped cylindrical blanket 101 (figures 15-0 and 16A) made of stainless steel particularly of the series AISI 420 already tempered. Its working, shaping and finishing is obtained with grinding disc tools 201 to 220 which operate with their flat side to provide the corresponding flat sides 102, 102', 103, 103' (figs 16B to 16 E) and with tangentially shaped and operating grinders 205 to 220, providing the bilateral inlet 104, 104' or 1'", 1"". The machine comprises a platform 130 having twentyfour stations Si to S20 A, B, C. On a central circular roundabaut coaxial with the platform twenty four needle-like blankets are singularly mounted. Thus at the same time twenty workings are performed. Upon each step of the round about a blanket is charged and a finished needle-like scissors tool (1) is removed. Thus it is estimated that the machine output may be about thousand needle-like scissors tool (1) per hour. To the finishing of the indenting are devoted sixteen steps: eight of which (the odd ones) applied to one side and eight (the even ones) to the back side thereof; starting from rough woi-king and ending with brilliant finishing provided with felt tools. The subdivision of the grinding into a number of steps is instrumental to safeguard the hardening previously made on the blanket to avoid an hardening repetition on the finished tool. Extremely important is the accuracy of the movements of the machine contrivances in order to supply each needle-like scissors tool (1) to be worked before each machine working tool in the same position and with constant accuracy. Such accuracy and preciousness is provided through a frontal geared clutch of the so said "HIRT" kind, arranged between the trunnion roundabout and the platform to put them in agreement.

In accordance with a preferred embodiment of the present invention specific principle informing the machine operation is that of providing, for each working, more operating heads; the first thereof for each of the two sides provides the material removal and the other the gauging with occasional or incidental removal of the small residue of the previous one (figures 17 and 18). After a number n of needle-like scissors tool (1) the first unit has removed the material corresponding to the section A of the graph and the limit of acceptability has been reached.

After n₁ needle-like scissors tool (1) the second unit has removed the material

corresponding to the section Al= about A and so on with a substantially exponential trend .

When all the units have exhausted their working capability a new setting of the machine is provided possibly by changing the working grinders.

Ways of carrying out the invention are described in detail below, with reference to drawings and examples, which illustrate specific embodiments, in which:

Figure 1 is the front view in an enlarged scale of a needle-like scissors tool according to the invention.

Figure 2 is the repetition of figure 1 in an even more enlarged scale wherein only a section of needle-like scissors tool according to the invention is shown.

Figure 3 is the side view of the needle-like scissors tool according to the invention of fig. 2 in the same enlarged scale.

Figure 4 is view similar to figures 2 and 3 but with of the needle-like scissors tool of figures 1 and 2 rotated by 45";

Figure 5 shows the potential penetration of the needle-like scissors tool in a cloth shown in vertical cross-sections and its respective effect on the warp or on the weft which is cut and on the weft or the warp which is simply side slipped

Figure 6 is the plane view in a very enlarged scale of a cloth which was provided by three needle-like scissors tools (VOB oriented) according to the invention

Figure 7 is the view from the bottom of the settling of four needle-like scissors tools on the bars hole of a head duly oriented with the help of a template according to the invention;

Figure 8 a perspective composite view substantially comprising the previous figures also in order to provide a suitable significative abstract figure

Figura 9 is a panoramic on the embroidery machine regarding one head and the particulars affected by the present invention.

Figure 10 is a scheme drafted to provide necessary information and parameters for the drafting of the computer program;

Figure 11 is substantially a repetition of fig. 10 wherein handmade drafting of the cuts to be substantially programmed by computer are provided

Figure 12 is another graph instrument to help the computer programmer;

Figure 12 is an approximate menu to help the computer programmer;

Figure 14 is a schematic plane view of the trunnion roundabout machine secondo la presente invenzione.

Figure 15 from 0 to 20 shows the side views of the blanket (0), of upper roughing (1), of bottom roughing (2), of upper finishing (3), of bottom finishing (4),made with even grinder as well as the indentation upper roughing and upper finishing steps 5, 7. 9, 11, 13, 15. (17, 19) and indentation botttom roughing and finishing steps (6, 8. 10, 12, 14, 16. (18, 20) and

Figure 16 from A to G shows in perspective views the succession of shaping and/or rough material removal, affilatura and finishing of the needle-like scissors tool (1) according to the invention.

Figure 17 is a dimostrative graph showing the principle of task suddivision among the working units; it gives the variation of material removal in function of the number of pieces;

Figure 18 shows driving catchet-gear means to rotate at least a single bar (7) in order to rotate the needdle-like cutting tool (1) fastened thereto and having complementary means associated to the pantograph (8) of coordinates Xdi, Ydi ;

Figure 19 shows a flow chart -discard removing means (4) comprising a pneumatic device (4');

Figure 20 and 21 show mechanic discard piercing and grappling needle-like tool (41") applicable to a needle earring bar (7) and having as complementary means associated to the pantograph (8) an arrangement (40")to remove the grappled discard (80')in a point of engagement of coordinates Xdi, Ydi .

Figure 22 shows in an enlarged scale a pattern to be read with reference to the example given hereafter

Figure 23 shows in an enlarged scale an handmade openworking after embroidery patterning with needle and thread

Figure 24 shows in an enlarged scale an openworking after embroidery patterning with needle and thread obtaine with process and means according to the present invention

Figure 25 shows in an enlarged scale an openworking before embroidery patterning with needle and thread, obtained with process and means according to the present invention

Previous to referring to the drawing a clarifying example will be given. For the reason to be explained later on the following correspondences were established:

V= Vertical = Violet;

0= Horizontal = Orange;

B= Bar= blue = 45- = /=acute='

S=Slash=Silver=45²=\=grave^

EXAMPLE

With a conventional embroidery machine with 24 heads provided each with at least six needle carrying bars and conventional means a pattern was provided. Such pattern was substantially quadrangular and was comprised of three sides of a square and a demi circle having a diameter equal to the square sides. On five of the six needle carrier bars were provided with threads with the colours white (W), Violet (V), Orange (0), Blue (B) and Silver (S). The pattern (figure ) was comprised by four members: one main member in turn including an imbastitura line, a ziz zag and a satin and three internal testing sewed perimeters respecvtively at a distance from the the internal edge of the satin of mm 0,1, 0,3, 0,5. The perimeter standing closer to the satin (sewn in white) was sewn with the four colours i.e. Orange for the base (0) and the top (O¹), Violet of the square sides (V, N) and for the arch bottom ends (V, 'V') blue for the segment arch (B, 'B) connecting the violet arch (V with the orange top (O')and silver (S) for the segment arch connecting orange top (0') with the violet arch CN'). When the pattern was completed in all its members twenty of the iwentyfour embroidered pieces were removed and given to twenty operators for cutwork test by scissors of course recommending to them to place the cutwork between the satin internal edge and its closed coloured perimeter standing at a distance of 0.1 mm from such edge. From the four heads still carrying the openworkless embroidery the needle carried by the bars provided with the coloured thread were removed the thread control was rendered inactive and in place of the needle a scissor needle-like tool according to the invention was mounted on the corresponding bar. To comply invention provision the application was made with the help of a mask according to the invention (fig.5)

In accordance with a preferred embodiment of the present invention to improve the efficacy of needle-like cutting tool (1) its blade is made fishtail-like to provide an action equal to the action provided by scissors blade the only difference being that the scissors blade pairs operates longitudinally to the cloth to be cut instead of an upright approach and the blade closure is perfecxtly equivalent to the descending movement provided by the needle carrier bar of a stitching device. In practice in quite a lot of cases the scissors are used for cutting particularly thin sheet materials with open blades pushing the blade corner against the sheet to be cut. The arrangement is such that the scissors-like pair of blades provide a longer cutting edge so that the two sides thereof provide a joint action which is even better than the action provided by the scissors since the scissors pivoted blades edges in no case can be complanar as are those of needle-like scissors tool of the present invention. Thus the scissors-like blades of the tool of the present invention cut the fibres giving lieu to a verical force component which is reduced and centripetal in accordance with the formula: erein

F_τ= cutting force

Rp= resistence of the thread fibres o to cutting n = number of thread fibers to be cut

OC = blade angle with respect to the needle-like scissors tool axis

C-p = cutting coefficient (grinding)

R_v= Vertical reaction (.perpendicular to the cloth)

R₀ = Horizontal reaction (on the cloth plane)

In accordance with another preferred embodiment of the invention when the openwork to be cut in the cloth is tortuous, the edge of the cutting blade of the needle-like cutter is made bent and is fastened to the head of the machine oriented by 90² or 45² according to the numbber of bars engaged if they are two or four Forma

For making the needle-like scissors tool ( 1) it is started from a two-stepped cylindrical blanket 101 (figures 15-0 and 16A) made of stainless steel particularly of the series AISI 420 already tempered. Its working, shaping and finishing is obtained with grinding disc tools 201 to 220 which operate with their flat side to provide the corresponding flat sides 102, 102', 103, 103' (figs 16B to 16 E) and with tangentially shaped and operating grinders 205 to 220, providing the bilateral inlet 104, 104' or 1'", 1"". The machine comprises a platform 130 having twentyfour stations Si to S20 A, B, C. On a central circular roundabaut coaxial with the platform twenty four needle-like blankets are singularly .mounted. Thus at the same time twenty workings are performed. Upon each step of the round about a blanket is charged and a finished needle-like scissors tool (1) is removed. Thus it is estimated that the machine output may be about thousand needle-like scissors tool (1) per hour. To the finishing of the indenting are devoted sixteen steps: eight of which (the odd ones) applied to one side and eight (the even ones) to the back side thereof; starting from rough working and ending with brilliant finishing provided with felt tools. The subdivision of the grinding into a number of steps is instrumental to safeguard the hardening previously made on the blanket to avoid an hardening repetition on the finished tool. Extremely important is the accuracy of the movements of the machine contrivances in order to supply each needle-like scissors tool (1) to be worked before each machine working tool in the same position and with constant accuracy. Such accuracy and preciousness is provided through a frontal

geared clutch of the so said "HIRT" kind, arranged between the trunnion roundabout and the platform to put them in agreement.

After n_χ needle-like scissors tool (1) the second unit has removed the material

Claims

1. In a machine (90) equipped for straight and/or omniform stitching with needle

(01) and thread (010) comprising:

- at least a stitching device (91) and possibly a plurality of stitching devices (91) possibly providing a plurality of fixed heads (9) each including more needle (01) and thread carrier bars (7) which are movable with respect to said heads (9), in order that any of said bars (7) may be placed coaxial to said head in engagement with a device which drives the needle carrier bar (7) up and down, each of said head (9) being substantially associated to a common stitching device (); wherein each of said bars (7) comprises: a) a vertical hole (7') for receiving a needle (01), b) a presser foot (70) with a hole (70') surrrounding the needle (01), c) an optional support for the provision of a borer, a thread detector (71) and wherein each of said heads is provided with: A) a common throat plate (92), including the needle and borer holes (92', 92"), B) a common hook assembly (93); C) a common thread detector counterdevice (94);

- a common paper (81) - cloth (80) carrying pantograph (8) to position the cloth (80) thereon and movable with respect to the sewing head (9) or borer axis;

- said movement of said bars (7) with respect to the said head axis,, said driving up and down of the active bar (7) and said movements of said pantograph (8) being controlled by a computer (Cpj whose software gives for each of the about 800 steps per minute the due signals; the provision of a complementary outworking system for obtaining automatically openwok effects, particularly in the embroidery field, including the following new and novel hardware and software arrangements, which are additional and/or modify and/or integrates the known hardware and software arrangements:

- a process and means for making needle-like cutting tools ( 1 ) whose bottom end (1') is shaped as a substantially diametral blade ( 1') adapted to perform cuts in the direction of its assemblage to the needle bore (7"> of the carrier bar C7^">:

- a template (6) provided with oriented openings for tutoring the operator in the application of the oriented needle-like cutting tools (1) to the head needle carrying bars (7) or bores (7') thereof

- the inactivation of each of said thread detectors (71') associated to each of those needle carrying bars (7) provided with such cutting tools (1);

- command means having at least one member (5', 5", 5n) on a fixed part of the machine and at least one members (05) attached to the pantograph (8), capable of emitting electronic, optical or wire-born signal commands, when such members (5- 05) are brought together in an engagement point of coordinates Xci, Yci ....Xc_n,

-discard removing means (4) comprising a pneumatic device (4') operating by suction and/or a mechanic discard piercing and grappling needle-like tool (41") applicable to a needle earring bar (7) and having as complementary means associated to the pantograph (8) an arrangement (40")to remove the grappled discard (80')in a point of engagement of coordinates Xdi, Ydi ;

- driving catchet-gear means to rotate at least a single bar (7) in order to rotate the needdle-like cutting tool (1) fastened thereto and having complementary means asεecrr t d , . .v: r.: : '. " :r . l ι ^r . : - . .X

-the drafting of a computer program wherein : i) given the data set forth in figure 13 ii) considered that the coordinates given to the pantograph ( 8) are referred to the axes of the cutting tool bar (7) in force, corresponding with the middle point of the tool blade, so that for safely and precisely approaching the patterned satin, the points to be coordinated must be kept at a distance x= Lf- sen a/2; wherein: L_t = cutting edge length; a = angle between the tangent of the pattern and the blade; ii) further considering t= minimum tolerance adapted for external and internal cutwork on already patterned clothes and T= highest tolerance for internal cutwork of not yet patterrned clothes which program gives:

I) for openworking before embroidery patterning with needle and thread the pantograph series of coordinates, as well as which of the needle-like cutting tool is wanted to perform each cut (V, 0, B, S), limiting the cutting effect within a perimeter of points: P_tp=m_n± (1/2C- T-x);

II) for openworking after embroidery patterning with needle and thread the pantograph series of coordinates, as well as which (V, 0, B, S) of the needle-like cutting tools (1) is wanted to perform each cut, limiting the cutting effect within a perimeter of points: P_ttd=m_n± (1/2C+T=x)

III) for label (external) outworking after embroidery patterning with needle and thread,the pantograph series of coordinates, as well as which (V, 0, B, S) of the needle-like cutting tools is wanted to perform each cut, limiting the cutting effect within a perimeter of points: P_ttd=m_n± (1/2C+T=x).

2. Needle-like cutting tool (1), obtained from the process as claimed in claim 1, characterized in that, in order to improve its efficacy its blade is made fishtail-like to provide an action equal to the action provided by scissors blades, whereby providing a longer cutting edge so that the two sides thereof perform a joint action which is even better than the action provided by the scissors since the scissors pivoted blades edges in no case can be coplanar as those of needle-like tool (1).

3. Needle-like cutting tool (1), as claimed in claim 2, characterized in that, said scissors-like blades cut the fibres giving lieu to a vertical force component which is reduced and centripetal in accordance with the formula:

n

F-p= cutting force

Rp= resistance of the thread fibres o to cutting n_F = number of thread fibres to be cut

(X = blade angle with respect to the needle-like scissors tool axis C-r = cutting coefficient (grinding) Vertical reaction (perpendicular to the cloth)

RQ = Horizontal reaction (on the cloth plane).

4. Needle-like cutting tool (1) obtained from the process as claimed in claim 1, characterized in that, the edge of the cutting blade of the needle-like cutter (1) is made bent and is fastened to the head of the machine oriented by 90² or 45^s according to the number of bars (7) engaged if they are two or four.

5. Device for controlling the orientation of the of the cutting blade of the needlelike cutter (1) as claimed in claim 1, characterized in that, it comprises driving catchet-gear means having a number of teeth comprised between 8 and 32, the moving from a driving catchet-gear position to the next one, is obtained mechanically with said command means having at least one member (5', 5", 5n) on a fixed part of the machine and at least one members (05) attached to the pantograph (8).

6. Device as claimed in claim 5, characterized in that the catchet-gear means are driven by electromagnetic means which perform on each step an angle

OC= 180/n, wherein n is the practicable number of positions, wherein when the angle difference demanded is 8.^l>Sι, more steps will be ordered to the catchet-gear

means.

7. Device as claimed in claim 5, characterized in that, to avoid the repetition of a high number of steps two electromagnets are provided which engage the catchet- gear means to drive it in opposite directions to meet the right angle through the shortest way.

8. Process for making needle-like scissors tool (1) as claimed in claim 1, characterized in that, it is started from a two-stepped cylindrical blanket (101) (figures 15-0 and 16A) made of stainless steel, particularly of the series AISI 420 already tempered.

9. Process for making needle-like scissors tool (1), as claimed in claim 1, characterized in that, its working, shaping and finishing is obtained with grinding disc tools (201 to 220) which operate with their flat side to provide the corresponding flat sides (102, 102', 103, 103') (figs 16B to 16 E) and with tangentially shaped and operating grinders (205 to 220), providing the bilateral indenting (104, 104' or 1'",

1"").

10. In a process for making needle-like scissors tool (1) a machine comprising a platform (130) having twenty-four stations (Si to S20 A, B, C), wherein in a central circular roundabout coaxial with the platform, twenty four needle-like blankets are singularly mounted in order that, at the same time twenty workings are performed and upon each step of the round about a blanket is charged and a finished needlelike scissors tool (1) is removed.

11. Process as claimed in claim 10 characterized in that to the finishing of the indenting are devoted sixteen steps: eight of which (the odd ones) applied to one side and eight (the even ones) to the back side thereof; starting from rough working and ending with brilliant finishing provided with felt tools, wherein the subdivision of the grinding into a number of steps is instrumental to safeguard the hardening previously made on the blanket to avoid an hardening repetition on the finished tool.

12. Process as claimed in claims 10 and 11, characterized in that the machine contrivances provide accurate movements in order to supply each needle-like scissors tool (1) to be worked before each machine working tool in the same position and with constant accuracy.

13. Process as claimed in claims 10 to 12, characterized in that in the machine such accuracy and preciousness is particularly provided through a frontal geared clutch of the so said "HIRT" kind, arranged between the trunnion roundabout and the platform to put them in agreement.

14. Process as claimed in claims 10 to 13, characterized in that the machine operates providing, for each working, more operating heads; the first thereof for each of the two sides provides the material removal and the other the gauging with occasional or incidental removal of the small residue of the previous one (figures 17 and 18), whereby upon a number n of needle-like scissors tool (1) the first unit has removed the material corresponding to the section A of the graph and the limit of acceptability has been reached, while upon n_x needle-like scissors tool (1) the second

unit has removed the material corresponding to the section Al= about A and so on with a substantially exponential trend.

15. Pneumatic discard removing means (4) as claimed in claim 1, characterized by a system substantially as shown in figure 19.

16. Mechanic discard piercing and grappling needle-like tool (41"), as claimed in claim 1, characterized by a system substantially as shown in figure 18.