US1163116A - Punching-machine. - Google Patents

Description

E. A. STIGGIN S. PUNCHING MACHINE.

APPLICATION FILED AUG.9, 1911.

1,163,116, Patented-Dec. 7, 1915.

2 SHEETS-SHEET I.

\ VWT/VESSES. Wvavm E. A. Sneems.

PUNCHING MACHINE.

APPLICATION FILED AUG.9. 19H.

1,163,1 16. Patented Dec. 7, 1915.

2 SHEETS-SHEET 2.

I/WTNESSES. 2. //\/l/[/\/7Z7R COLUMBIA PLANOGRAFH (10.. WASHINGTON. D. c.

invirnn siurras EDWARD A. STIGGINS, OF BEVERLY, MASSACHUSETTS, ASSIGNOE TO UNITED SHOE MACHINERY COMIPANY, 0F EATER-SON,

JERSEY.

NEW JERSEY, A CORPORATION OF. NEW' PUNCHING-MACHINE.

insane.

Specification of Letters Patent.

Patented Dec. 7, 1915.

Application fi1ed August 9, 1911. Serial No. 643,176.

To all whom it may concern:

Be it known that I, EDWARD A. STIesINs,

a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Punching-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to punching mastock, and in order to promote brevity the term perforations will be employed to designatethe characters indented or cut by the punches; but it should be understood that punches of any desired type may be used. I

These ornamental perforations are usually located in lines which follow the contours of the edges of the upper of a shoe, and inasmuch as these contours consist in part of curves it is necessary either to produce the perforations one at a time or to produce the whole line at a single operation. I he latter method is impractical for generaluse since the contours of the uppers of shoes vary greatly, and the first method is therefore the one commonly used. As has been stated, these lines of perforations are for the purpose of ornamentation, and it is consequently desirable that provision be made for varying the character and sequence of the individual perforations with a view to varying the finished design.

The general object of the present invention is, therefore, the production of lines of ornamental perforations which consist of recurring groups, the individuality of the groups being determined-by the character and sequence of the perforations which form them. i

To this end one feature of the invention consists in the combination in a machine of the class described of a plurality of punches, means for forcing said punches into the stoclr, and means for causing said punches to act in a predetermmed sequence. And 1n the illustrative machine the punches are mounted in a turret whichis carried by a reciprocating punch-bar, and means are provided for moving said turret angularly in timed relation withthe reciprocation of said bar. 3 l/Vherethe line ofperforations to be produced is to be straight or approximatelyso, it would be possible to mount upon the reciprocating punclrbar of an ordinary machine a small group of punches arranged in line, in which case the resulting line of perforations would consist of recurringgroups each group consisting of a number of perforations equal to the numberof punches.

It is desirable, however, to be able to increase the size of the recurring groups without increasing the number of punches employed, and a further feature of this invention consists in the provision of a given number of punches each formed to produce a perforation of a particular character and means for actuating said punches to produce a line of perforations made up of recurring groups, each group containing a greater number of perforations than the number of punches. And in the illustrative machine this is accomplished by oscillating the turret referred to above so that one of the punches is caused to operate oftener than another.

These and other features of the invention includingcertain details of constructionand combinations of parts will be described in connection with an illustrative machine and pointed out in the appended claims. Referring now to the accompanying drawings r-Figure 1 is a side elevation of a machine in which the present invention is embodied; Fig. 2 is an end elevation of a portion of the machine; Fig. 3 is anelevation showing the lower end of-the punch-bar together with the holder and the punches; Fig. 4 is a detail showing the turret in which thepunches are mounted; Fig. 5 is an elevation of the turret; and Fig. 6 is. a detail perspective showing a piece of leather which clutch 'mechanism Referring more particularly to Fig. 1, the driving shaft 1, mounted in hearings in the frame 3, carries a driving pulley 5 which may be connected with said shaft by indicated comprehensively by 7. The punch-bar 9 is slidably mounted in the punch-bar carrier 11, said punch-bar carrier at 17 and is acted upon nearits central portion by a fulcrum block 18 carried at the inner end of a clamping screw 19, this screw being adjustable in a slot 21'in-the frame of the machine to vary the throw of the punch-bar carrier and thereby the extent of feed ofthe stock. A presser foot 23 is intermittently raised and lowered at the proper time to permlt the punch to feed the stock, and an edge gage 25 for guiding the workis adjustably clamped to the frame of the machine.

The machine will not be described further in detail other thanto say that its operation is briefly as follows: Starting with the parts as showninFig. 1, the punch-bar isforced downwardly to cause the punch to enter the stock; .the punch-bar carrier is thenswung forwardly in the line of feed to cause the punchvto feed the stock; the punch-bar is raised and the punch-bar carrier swung back vto the position shown. The machine, in short, is of the general type known; as feeding and punching machines in which the punch, besides being reciprocated, is moved laterally to feed the stock, and the details of. the particular machine shown are clearly set forth'in the patent referred to above. It should be understood, however, that the inventionis not limited to this particular machine but may be employed in connection with machines of other types.

Referring now more particularlyto the remaining figures, a holder 27 fastened to thepunch-bar 9 by means of a'pinch screw 29 has formed therein a socket to'receive a turret. 31. This turret (best shown in Figs.

A: and 5) has a cylindrical portion provided with two sets of teeth, one set 33 serving merely as guides for the proper positioning of. the turret when'it isplaced in the holder and the other set 35 serving as a mutilated; pinion by means of which the turret may be properly I actuated, The punches 'hereinI shown as asquare tube 37,

two smalltube s39 and a cylindrical tube 41 1 are driven into the turret and l bear with their rear ends against aringlii, said ring having perforations tor-permit the escape of the waste material cut out by the punches. I

In the illustrated machine the turret is oscillated, and in order to produce this oscillation a rack 45 which meshes with the teeth 35 is slidable in a guideway 17 in the holder, said rack being formed at its outer end with a vertical guideway in which a block e9, pivoted to an actuating lever 51, is slidable. This lever 51, which is pivoted to the punch-bar carrier at 53, is provided at its upper end with a cam roll which travels in a cam track 57 formed in a large gear 59, said gear being rotatably mounted on a stud 60 held by the punch-bar carrier and consequently movable with said carrier. A gear 61 fast to the driving shaft 1 actuates the gear 59 and thereby, through the cam track 57, the roll 55, the lever 51, and the rack 15, actuates the turret 31.

In order to permit ready removal and replacement of the turret 31, said turret is held iii-place by a latch 63 pivoted to the holder 27 at 65 and provided with a semicylindrical projection 67 arranged to enter the bore of the turret, said latch being provided with a rotatable locking member 69 having at its inner end a'loching pin 71 which enters a recess in one wall of th guideway 47. Y

The teeth. 33, as has been explained,- are for the purpose of insuring that the turret shall be properly placed in the machine and their location is such that it is impossible toslide the turret into place except in one position, it being necessary for these teeth to be slid past those of the rack 15.

' In order to insure that the material being operated upon shall be properly held down upon the table 73 during the punching operation, as well as during the time that the punches are being withdrawn, a stripper 75 is carried by an upright member 77 slidably mounted in a guideway in the holder 27 and normally held in lowered position, as shown in Fig. 2, by a grasshopper spring78, one end of said spring being coiled about the head of a screw 79 which is threaded into the member 77 and the other end of the spring being coiled about the head of a screw 81 which passes through a slot 83 in the member 77 and is threaded into the holder 27.

55. has noti been' moved with respect to the sition.

bringing the punch 41 into operative position. The movements of the punch-bar and the punch described above are now repeated after which the punch 39 is again brought into operative position. Similarly the punch 37 is next brought into operative pooperate upon the stock once for every operation of either of the other punches, and the resulting pattern appears as shown in Fig. 6. Referring now to this figure, it will be seen that the line of perforations which re salts from the operation of the machine is made up of recurring groups of four perforations, one off which is duplicated in each group. If four punches had been employed the resulting line of perforations 'would have been made up of recurring groups of six, two of which would have been duplicated in each group. In short, where more than two punches are used and the turret is oscillated, the number of perforations in the recurring groups which make up the finished line will always be greater than the number of punches.

it should be noted particularly that the punches in the present machine are operated one at a time andthat, by reason of this mode of operation, a line of perforations of varied characters may be formed along the curved edge of the piece oi. stock, or curved line of such perforations may be located as desired upon said piece.

.rtlthough the invention has been set forth in connection with a machine for forming perforations in stock, it should be understood that the invention is not limited in the I cope of its application to the particular machine shown and described.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. A machine of the class described having a punch bar, means for reciprocating said punch bar, a punch bar carrier, and means for moving said carrier laterally in combination with a plurality of punches carried by said punch bar, and automatic means for causing said punches to be brought into operative position in a predetermined sequence.

A machine of the class described having a punch bar, means for reciprocating said punch bar, a punch bar carrier, and means for moving said carrier laterally in combination with a plurality of punches carried by said punch bar, and automatic means for moving said punches with respect to said bar.

In this way the punch 39 is'caused to I 3. A machine of the class described having a punch bar, means for reciprocating said punch bar, a punch bar carrier, and means for moving said carrier laterally in combination with a plurality, of punches carried by saidpunch bar, andautomatic means for oscillating said punches.

' 1-. A machineoi the class described having a punch bar, means for reciprocating said punch bar, a punchbar carrler, and

means for moving said carrier laterally in combination with a plurality of punches carried by said punch bar, and automatic means for moving said punches angularly in timed relation .to the reciprocation and lateral movements of said bar.

5. A machine of the class described having a punchbar,,means for reciprocating said punch bar, a punch bar carrier, and means for movingsaid carrier laterally in combination with a holder movable with said punch bar, a stripper yieldingly mounted in said holder, aturret angularly n1ovable in said holder, and means for moving said turret in timed relation to thereciprocation and lateral movement of said punch upon said punch bar carrier for imparting intermittent movement to said turret.

7. A machine of the class described having, in combination, a supporting table over which the stock is fed, a punch bar, means for reciprocating said punch bar, a given number of punches carried by said bar each punch formed to produce a particular character, and means for actuating the punches in timed relation to the reciprocation of the bar to produce a line of characters made up of recurring groups, each group containing a greater number of characters than the number of punches.

8.-A machine of the class described having, in combination, a punch bar, means for reciprocating said bar, a holder fast to said bar and provided with a cylindrical socket, a turret adapted to be held in said socket, and a rack for operating said turret, there being formed upon said turret a set of guiding teeth to insure its proper placing, and a set of operating teeth to coact with said rack. I

9. A machine of the class described having punch-bar, means for reciprocating said punch-bar, it punch-bar, carrier and means for moving said carrier laterally, in combination with a cam mounted upon said laterally movable carrier, an angularly movable turret mounted upon said punch-bar, punches carried by said turret, and means for actuating said'turret from said cam.

ing a greater number of characters than the number of punches.

12; A machine of the class described having', in combination, a bed for supporting a piece of stock, a punch bar, means for reciprocating said bar, three punches carried by said bar and arranged to be operated one at a time, each punch being movable with respect to said bar into'and out of operative osition andautomatic means for causin 7 a one" of said punches to be moved into said position twice for every time that either of the other two is so moved.

1?). A machine of the class described hav ing, in combination, a bed for supporting a piece of stock, a punch bar, means for reciprocating said bar, three or more punches carried by said bar and arranged to be operated one at a time, each punch being movable with respect to said bar into and out of operative position, and automatic means for causing one of said punches to be moved into said position oftener than another.

14; A machine of the class described having', in combination, a punch bar, a holder fast thereto, said holder being provided with a cylindrical socket the axis of which is at right angles to that of said punch bar, a turret loosely mounted in said socket, punches carried by said turret, means for removably holding said turret in place whereby said turret may readily be removed and replaced, means for operating said "punch bar, automatic means for moving said turret angularly, and a stripper for cooperating with said punches.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWARD A. STIGGINS.

Witnesses Crrns'rnn E. ROGERS, EUNICE G. Goonsrnnn.

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

Washington, 1L6.

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