US1471420A - Machine for making press studs or fasteners - Google Patents

Description

Oct. 23, 1923. 1,471,420

A. RUZICKA MACHINE FOR MAKING PRESS STUDS OR FASTENERS Filed July 15 1917 5 Sheets-Sheet 1 Oct. 23

A. RUZICKA MACHINE FOR MAKING PRESS STUDS OR FASTENERS Filed July 13 1917 5 Sheets-Sheet 2 gnum H01 HA1 TON fiuz/m/i attorney,

Oct. 23,1923.

, A. RUZICKA MACHINE FOR MAKING PRESS STUDS OR FASTENERS Filed July 15 1917 5 Sheets-Sheet 5 jggji,

Oct. 23, 1923. 1,471,420

A. RUZICKA MACHINE FOR MAKING PRESS STUDS OR FASTENERS Filed July 13 1917 5 Sheets-Sheet 4 M @513 52g QLW AI/I4 7 3| F $7 52 49 40 e 1 7 w 7 I 52 41/ 55 L I 42 f n A Snvnfoz o E %/7-ra/v Huz/c/m L... w W

Oct. 23, 1923. v

A. RUZICKA MACHINE FOR MAKING PRESS STUDS OR FASTENERS Filed July 13 1917 5 Sheets- Sheet 5 gwuwnfoz 1 IN ram/702125? Patented Get. 23, 1923.

* NEED sr ANTON BUZICKA, 0F CLEVELAND, oHIo.

, MACHINE ron MAKING PRESS sruns on FASTENERS.

Application filcd m is,

To all whom it may concern:

Be it known that I, AN'roN RUzIoKA, a

citizen of the United States, residing at Cleveland, in the county of Cuyahoga. and State of Ohio, havexinvented certain new and useful Improvements in Machines for Making Press Studs or Fasteners, of which the following isa specification. I l

V This invention relates to machine for 'making so-called press studs or fasteners which consist of a head part and a'socket studs provided with slots at the sides, and the. socket part having a bent spring which snaps over the heads'and into the slots when the parts are pressed together, and which permit the parts to be separated byfslight pull when it is desired to unfasten the same.

The present'rnachineis intended particu-Z larly for the continuous and rapid production of the head parts of the fastener, and

includes means for pressing, punching and 7 slotting the said parts as will more fully;

. in 'line with the openings 18 to 24-arethe shaping and :cutting' bushings, or female die members, 32,33,34, 35, 36;37f'anc1 3s, these being arranged in rows corresponding" to the rows -of punches and shaped to perpp m hefollowing description and the accompanyin d i In the drawings, Figure 1 is a s dezeleva tion showing the de'vicesas mounted in a press. 1 Fig. 2 is, an end elevation of the same..-

Fig. 3 is a'plan of the bed overwhich the work is'fed. v V

Fig. 4 is a section on the line 44 of Fig. 1. 5 Fig. 5 is a vertical section showing the dies in open position.

. I Fig.6 is a similar section with the diesclosed Y Fig. 7'is a vertical section on theline 7-7 of Fig. 4, in open position[ Fig. 8 isa vertical section onthe 8-8 of Fig. 4, with the parts closed.

Fig. 9 is a detail in section on the line 9-9 of Fig. 4, showing position. V Fig. 10'isa detailin section'onthe' line 10-10 of Fig. 5.- f

F igure' 11 is an end View members. 1 a 2 Referring specifically to the drawings, 1

of the pressby means of clamps at the sides thereof. 4 is-an upperdie plate attached to the reciprocating cross head '55 of the press-V The bed 1 comprises a lower plece 6 plate 7and spacingblocks' 8 forminga vfits in the slot 16- line ' rollers 44. These rollersco-operate withcam" 'plungers fixedto the head plate 14, and r these plungers work through the slots 43 as 7 well as throughslots 46 in the p1ates'6,'7, and--* Band when the plungers' descend they strike the rollers 41and" the cam surfacesthereof shift the cutter bar 39and-the'kniVes -car- 1 .ried therebyoutwardly or toward. the'right one of the studs in;

of one time as.

indicates a bed plate mounted on the base 2" 1917. Serial No. 186,368.

recess9 which extends full length of the bed, under the [punching and cutting devices. The base 6, plate 7 and blocks 8 are held'together by screws S and' 10* and studs 11. Rows of circular openings 18, 19,

20, 21, 22,. 23, and 24 are cut through the plate 7 and are arranged in succession, the

.-openings in each row being staggered as shown in Fig. 3, to avoid waste of stock, each row as shown consisting offivehOles or openings, and enabling five studs 'to'be This number of cross head 5.

with the openings and are fixed to thelower' plate 14 o'f the upper head 4, which-plate"' is secured to the dovetailed plate 15 which of the block 17] on the -Mounted in the base plate t3, below= form the successive. operations to be described. i

videroom for the. last row of'bushings 38,

is mounted for lateral movement in a recess} '41in1the basei6, and mountedon this cut;

terbar are a series'of pairs of knives; 42

heads ofthe. studs, one slot being located at eachside of the head. See Fig. 9. The'cutii ter bar 39 has slots 43 at each end containing hand end ofv the die plate'jas seen inFig. 4.-'-'

When the plungers 45 are lifted the cutter.

bar is forced back by the springplungersf} 47 located in recesses'in the en'd of the loed plate to allow the cuttings to drop out. '-A

plate. A; slot 48 is 'cut"-through the bed 90" l which are located inline with each line of I studs and which act to cut the slots in the,

cutter bar 39 serves to prevent the knives 42 from cutting the slots in the head of the stud to close to the base thereof. That 1s, this plate 49 serves to space the knives from the flat part of the wor the knives working under the plate and the fiatstrip or material passing over the plate, as shown in Fig 9. The base plate 61s provided with spacing holes 50, between the bushings 35,- 36, 37

and also beyond the recess 41. (See Fig. 5.) The row of bushings or femaledie members are pressed up by springs 51 there-v under acting toli'ft the strip of metal afterca'ch'operation, to allow it tobc'inovedforward or fed along for thenextoperation. The rows or bushings or die members' 35 37, and 38are also provided with central sprmg pressed plungers 52-, 53, 54 each of which .will yield at each strokeotthe-press, and

lift'after-each stroke to raiseithe strip of material so'that' it can' be fedalong; The

tions 55 corresponding in shape to the female recesses 56 in the -bush1ngs-82 to Ten successive operations are performed;

with this machine in making the studs.- he

stripof-metalis fed through the slot from thele'ft hand end. Any suitable form of intermittent feeding device may be used, feeding the metal forwardstep by step. The first operationis performed bythe row' of dies 25 which make bosses ordepre'ssions inthe strip correspondingto the depression 56 in the bushing 32. At the next operation this boss is deepened by thedie 26 and the bushing 33, andjatithe next step the head or' bossiis elongated by the die 27 and bushing 34,.a-ndthen further shapedand narrowed by t'hedie '28 and'bushi ng; 35, the, plunger 52' yielding as shown in Fig. 6. The I18Xi350] 3* erationis simply to space-,the heads-ofthe studs being-received in, the spacing holes 50. At the next operation the: punch 29 punches holes through-the base of each meal-- the bushing 87, the latter having aiyielding plunger 53.- The next operation is a space, andthe last operation is the cutting ofthe grooves in'th'e sidesof the headsby means of theknives42 and-bar 89 which is reciprocated by the cams 45., and at this operation the studs arevengag'edby the die K161i bers 31' co-operating with the bushings 38. As shown n Fig. lOeach of these the members-hasthe plunger 60 mounted therein and The plunger 60 has a longitudinal groove 62 en gaged by a projection 63 which keeps the plunger-fromturning, and at the end the depressed fromabove a spring '61.

The

plunger has a projection 64; which is wider one way than the other, or flattened on the sides, and this projection 6d enters the head of the stud and forces it down against the plunger 54: in the bushing 38, and the fiattened' sides of the projection 64 provide a space permitting the knives 42, when they advance, to cut through the head at each side thereof. It will be understood that the spring pressed plungers in some of the bushings lift the stock clear of the female dies after each operation, so'that the strip can be advanced by the feeding mechanism after each operation. This machine operates in the manner above described to shape and cut the studs in a strip of metal, from which they can afterwardsbe individually cut and finished by other ma'chines.-

I claim:

1. In a die press, the combination with a die mechanism adapted to form a boss 0n:a stripof metal-, of a pair of cutters movable in aline parallel to said strip and lengthwise thereof and adapted to cut-a slot in each side of said boss.'.

2. The combination with .a die press having member's adapted to form bosses on a strip of metal-fed between'the same,- of a reciprocating cutter bar extending across the line of feed of said strip .and'inov'able parallel to saidline and provided with cutters adapted to cut-slots in opposite sides of said bosses.

3. Thecombination with a die'press'having fixed and movable press parts provided with-die members adapted to form successive bosses on a strip ofinetal fed between the same, of a reciprocating cutter bar mounted in a-recess inthefixed presspart and-extending across the lineot' movement of said strip and provided with cutters adapted-to out slotsin the sides of said bosses, and means carried by the movable press part to operate the cutter.

4(The combination with' die press havl ing a bed provided with a female diememher and a reciprocating head providedwith a male die member-, of a-reciprocating-cutter bar working ina recess in the-bed in a direction at a right angle to'the axis of the dies and provided with cutters adapted to act on-workafter 1t passes said dies, and

.means'carried by the reciprocating head to operate said cutter bar.

5. The' combination of adie'pres's'bed hav ing a transverse recess, a reciprocating die head co operating therewith; a cutter bar movable in said recess in a plane paraile'l to the face of thebed and; having cutters adapted to act on'pr'oje'ctions on worlrpassing across said-bed,andineans'to operate the cutter bar, said means including a cam carried' by said head and engaging the cross bar tomove the sameone way, and a spring to move the same the other way.

6. The combination with a bed plate having a'recess, of a face plate over said recess and having an opening through which a boss on a piece of work on the face plate may project into said recess, of a cutter working laterally in said recess under said face plate and adapted to slot the side of said boss, and

means to operate said cutter.

7. The combination with a pair of die members one of which has a recess and a face plate over said recess, said plate having an openlng through whlch a boss on a piece of work may be pressedby the other member of a cutter working in said recess under said plate and adapted to slot the side of said boss while it is'pro-jecting' through the opening, and means to operate the cutter in time with the die members.

In testimony whereof, I do afiiX my signature .in presence of two witnesses.

ANTON RUZICKA. Witnesses: v

7 J OHN A. BOMM'HARDT, G. W, ROSENBERG,

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