US1474473A - Press mechanism - Google Patents

Description

Nov. 20, 1923. 1,474,473

W. F. HEROLD Filed Aug. 25. 1921 4' Sheet-Sheet 1 PRESS MECHANISM Nov. I 20 1923. 1,474,473

W. F. HEROLD PRESS MECHANISM Filed Aug. 25 1921 4 Sheets-Sheet 2 Nov. 20,1923. v 1,474,473

W. F. HEROLD :1 4

PRESS MECHANISM 4 Sheets-Sheet 4 Filed Aug- 25. 1921 IIlIIIIlIIII I V [N VENTOR wzazf BY 97 I A), ATTORNEY Patented Nov. 20, 19 23.

UNITED STATES PATENT OFFICE;

WALTER F. HEROLD, 01E NEWARK, NEW JERSEY, ASSIGN OR TO THE BASSICK COM- PANY, F BRIDGEPORT, CONNECTICUT, A CORPORATION OF CONNECTICUT.

PRESS MECHANISM.

Application filed August 25, 1921. Serial No. 495,254.

To all whom it may concern: adjustment; or change made, by hand or Be it known that I, VVALTER' F. HEROLD, by some mechanism other than the press a citizen of the United States, and a resident head, after which it will agaln travel under of Newark, in the county of Essex and State the press head and be operated on by a of New Jersey, haveinvented certain new different set of pressing members, carried 60 and useful Improvements in Press Mechaby the press head. With such an arrangenism, of which the following is a specifiment an article may be completely formed cation. or operated upon without removing it from The invention relates to press mechanism, the (lie carrier of the machine, in cases in and particularly to devices in which difwhich, under the former practice, it woud 65 ferent pressing operations may be carried have to be removed from one machine after out in the same machine. Machines are certain operations and placed in another known in which a plate carrying dies is machine, or other machines, one after the stepped around so as to bring an article in other, which would perform subsequent 0pone of the die recesses successively beneath crations. 70 punches or other pressing members carried Other objects of the invention comprise by the press .head or ram, which successivelv the provision of novel and improved comerform different operations on the. article. binat-ions of elements and details of con- One of the objects of the present invenstruction all as will be more fully described tion is to provide an improved construction hereinafter and particularly pointed out in 75 of the character referred to, whereby, inter the appended claims. alia, the carrier plate referred to will carry In order that a clearer understanding of articles to be operated upon two or more the invention may be had attention is herliy limes beneath the'press head, in such a mandirected to the accompanying drawings 26 Her that different pressing operations will forming part of this application and illus-- 80 be performed upon each article during the (rating one embodiment thereof. In the second or subsequent time it is carried bedrawings, neath the press head, from those performed F igure 1 is a side elevation of a punch during the first or former time. This may press embodying one form of the invencc accomplished by so arranging the feed tion; 1 8 of the carrier plate in relation to the spac- Fig. '2 is a front elevation of the same; ing of the die recesses 0n the plate and the Fig. 3 is a horizontal section taken on punching or pressing members carried by line 3-3 of Fig. 2; the press head that each article, on a second F 4 is a vertical section taken on line trip beneath the press head, will be pre- %4 of Fig. 3; and, 94)

sented successively to punches or pressing F gs. 5 to 12 inclusive, are respectively members different from those to which it vertical sections taken on lines 5-5, 6-6, was presented on the previous trip.- One 77, 88, 9-9, 10-10, 11-11and 12-12 specific manner in which this may be acof'Fig. 3.

40 comp'lished is by providing an odd number 7 Referring to the drawings the machine of die recesses in' the carrier plate, and feedmay be provided with a suitable frame 1, ing. the plate an even number of die spaces, carrying a crank shaft 2 which may be rosuch as two die spaces, forward, each actated from any suitable source of power, tuation. Accordingly, a die space which this shaft being illustrated as provided with 45 stops at position one, in one rotation of the a pulley 3 which may be rotated by belt piate will pass by this position during the connection. The press head 4 is vertically next rotation of the plate, and will stop reciprocated between suitable guides from instead at position two, where-it will be crank shaft 2 by the connecting rod indipresented to a different punch or pressing cated at 5. The press head or ram 4 carries 50 member. One advantage of such an ar plurality of punches or pressing members rangement is. that, after an article has been" indicated generally a-t 6. operated on by one or more pressing mem- Articles to be operated upon are carried berscarrred by the press head, it will'come y a carrierplate which in'the embodiment out into a position which Wlll permit someof the invention illustrated takes the form 5 thing further to be done to it, or some of a rotatable disc 7 which is mounted-for'll odd number of recesses rotation about the axis of the vertical pin 8. Plate 7 may downwardly extending boss 9 mounted for rotation upon a fixed member 10, pin 8 extending through boss 9 and member 10 and being suitably secured in osition as by providing the same with a ead and a nut 11, 11, on the upper and lower ends thereof. Member 10 maybe carried upon :1 transverse portion 12 of the frame of the machine. The construction so 'far described is all old.

The carrier plate 7 is provided with a pluralit of recesses in which the dies generally in icated at13 are positioned. These dies are adapted to contain articles which are to be brought beneath the pressing members -6 of the ram or pressing head 4 to be operated upon. These dies should be. so spaced in relation to the positions of the pressing members 6 and in relation to the feed of the carrier plate 7, that an article carried by any oneo progressed v successively the pressing members 6, during tion or movement of plate 7, and, after being carried out from beneath the pressing head then will subsequently be progressed beneath certain others of the pressing members 6 carried by the pressing head. In the f the dies 13 will be beneath certain of embodiment of the invention. illustrated this result is accomplished by providingan in plate 7 "and ies carried thereby, arranged in a circular series adjacent the outer edge of plate 7, plate 7 being advanced step by step, each step rotating the plate-a peripheral distance sufficientto advanee each die recess the distance between an even number of diefirecesses.

Each die 13 may be provided with a suitable 1 recess 14:" in. which an article to be operated upon may be positioned. A knock out pin 15 is also preferably positioned beneath recess 14 in position to raise the article in recess 14, so that it may readily be removed therefrom, after the operations upon the article have been completed.

In the form of construction shown each knock out pin comprises a stem extending upwardly from a disc 16 which is slid'ab ly mountedin a recess 17 in the lower part of the die, the stem 15 extending upwardly-from recess 17 through a suitable opening by appropriate pawland ratchet mechanism and for this-purpose may be rovided a out its with equally spaced notches 20 be provided with acentral' is mounted one rotasuitable spring 32 which 'ried by theapress head may socket for a caster is to.

I generally by in the die so as to enter recess 14 and dislodge the article lus may be fixedly periphery, these notches preferably being so spaced that radial lines extending from the center of disc 7 and passing through the vertical axes of dies 13 will also ,pass through notches 20'. v

The disc. 7 is rotated upon each operation of the press head through a peripheral distance equal to the distance between an even number of notches 20, the construction illuS trated being intended to be advanced the distance between two notches, upon each actuation of the press. This may be ac-- complished by any suitable mechanism, As illustrated-crank shaft 2 of the press may be provided with an eccentric. 21 or equiva ent device whereby the rod 22 is moved up and down as shaft 2 rotates. The lower end of rod.22 is connected by arm 23 to a short horizontal shaft 24 supported in suitable -bearings25. This shaft carries another arm 26 the upper end of which, indicated in Fig. 3 at 27 ,-moves within a slot in a rod 28 which for horizontal reciprocation through bearings indicated at 29.

A pawl 30 is pivotallyconnected to 'member 28-asshown at 31, and this pawl is adapted to coeoperate with not'ches 20 and to thereby advance plate 7 a distance between two noitches-duringeaoh rotation of shaft 2. aPawl 30'may be spring pressed into position to engage vvith notches 20 during the forward movements of the pawl, by a may for example be a spiral spring having one-end connected to member 28 and the other end connected 7 to a, tail 33 of the pawl.

As illustrated plate 7 extends partly beneath the-pressheadand partly outside the edges thereof. The pressing. devices 6 carbe of various characters and of a varied number in accord ance with the operations which are to be performed. In the embodiment. ofthein vent on illustrated,'by way of example, a

be formed from a tubeof metal and have a washer, or leg mount secured thereon. To perform this operation the pressing members designated thegreference character 6 may be four in number, indicated respectively by the reference characters 34, 3'5, 36 and 37. which are adapted to perform different operations upon the metal tube. In the embodiment illustrated an indicatmg. plate 38 in the form -ofa partial annumounted in front ofthe plate 7, to extend partly around. the same. At various points ,on. this indicating. plate, as is indicatedmt 39, somezdesignation may be prmtedisuchas the word .tube to indlcate that the blank tubes may be dropped into empty dies which .momentarily stop. opposite these designations. Also, atpoints intermediate the designations 39, other indi-- cations 40 may be printed on the indicating plate, such as the words leg mount, which in the particular form of apparatus illustrated indicates that a leg mount. or washer may he slipped over partially formed sockets, which have been carried beneath the press head and thus partially formed and are, therefore, ready to receive the leg mounts which are to be secured in position on the sockets (hiring the second travel of the latter beneath the press head.

A metal tube 41 is indicated in Fig. 5 as having been slipped into the recess 14 of any one of the dies 13, at any of-the positions indicated at 39. Plate 7 being stepped around two spaces at a time, the tube 41 will arrive beneath the pressing member 34, as is indicated in Fig. 6. The object of this member is simply to set the tube firmly in position within 'the die recess 14. Member 34'may suitably comprise a pilot 42 adapted to enter the upper end of the tube and a horizontal face 43, surrounding the base of the pilot 42, adapted to strike against the upper end of the tube. Member 34 is of such length as merely to press the tube firmly into recess 14 without doing anything further.

The outline of the press head is indicated in Fig. 3 in dotted lines at 44. A bolster or fixed member 45 is mounted beneath the portion of the plate 7 time beneath the press head, the dies 13 sliding over thisbolster so as to be firmly supported during the pressing operations. Bolster 45 may be provided with an annular recess 46 through which the downwardly extending portions 19 of the knock out pins 15 will move.

The tube 41 having been properly set in position, the next forward actuation of plate 7, moving the same forward two notches or two die spaces, as stated, will position this tube beneath the punch or pressing member 35 shown in Fig. 7. It will be noted that the recess 14 of each die is provided With a curved bottom portion 47. Each knock out pin 15 is preferably provided with a short upward extension 48 of reduced diameter which is positioned within the lower end pressing member 35 is to push tube 41 downwardly a sufficient amount to arch or dome its lower end, as is indicated at 49 in Fig. 7. Accordingly member 35 may be provided with a striking surface 50 adapted to engage against the upper edge of tube 41, with a pilot 51 adapted to enter the upper end of the tube and with an annular wall 52 adapted to extend around the upper end portion of the tube. The portions 51 and 52 of member 35 preventing the upper portion of the tube from buckling inwardly or outwardly and accordingly downward pressure on the tube results in curving the lower end of the same, as is shown at 49, against the which extends at any,

10, which as is indicated of recess 14. I The function of curved surface 47 of the die, the upward extension 48 of pin 15, in the form of construction illustrated, forming an abutment about which the lower end of the tube will be positioned at the end of this position of member 35 and its downwar l movement will be such as to desired doming of tube 41.

The next advance of tube 41, brings it beneath pressing member 37, as shown in Fig. 8. This member is adapted to form the peripheral bead 53 about the upper portion of tube 41, member 37 being so formed and of the proper length to obtain this result, as will be obvious from the drawmg.

The tube 41 under consideration will now be advanced out from under the press head. As soon as it arrives at any of the positions indicated at 40 an operator will slip the flanged washer or leg mount indicated in Fig. 9 at 54 over the upper end of tube 41. This leg mount comprises a metal disc having a central opening therethrough through which the upper end of tube 41 will extend, when the leg mount has been dropped in position, the .leg mount resting upon the peripheral head 53 which has now been formed on the tube.

In the continued operation of the machine tube 41 will again move beneath the press head but will not stop beneath pressing members 34, 35, or 37 because of the fact that an odd number of dies are provided while the plate 7 is stepped around an even number of spaces each time. Accordingly no punches or pressing members will be encountered until the tube is brought beneath the pressing member 36, illustrated in Fig. by Fig. 3 may be position-ed intermediate the pressing members 35 and 37. Pressing member 36 is adapted to press the upper end of tube 41 into a peripheral bead 55 which is firmly of two spaces,

pressed against the upper surface of leg mount 54 so that the latter will be firmly held between beads 53and 55. Member 36 may be arranged to produce this result in an obvious and well known manner.

Referring to Fig. 3, it will be noted that the positions of pressing members 34 and 35, indicated by section lines 66 and 7-7 are two die spaces apart, and the position of member 37, indicated by section line 88 is two die spaces beyond the position 0 member 35. Pressing member 36, however,

operation. The

produce the as stated, is intermediate members-35 and 37 (see section line 10-10 in Fig. 3), so that member 36 is only one (lie space away from either member 35 or 37. 1

The socket with washer attached now being complete nothing remains but to remove the same from the die, which. is preferably done automatically. In the form of construction illustrated the tube 41 is first loos- I therein by a the die cavity crank shaft ally mounted as shown at 65 on block 63, le-

- cally mounted pin 61 knock out device shown in sion of a pm partly, come around tothe operators ened in the die cavity and somewhat raised knock out mechanism of known form, indicated in Fig. 11.

This may compr se a rod 56 which extends downwardly from the press head 4 and is pivotally connected at its lower end to an arm 57 wh ch is pivoted intermediate its length on a pm 58 within a recess 5 opposite end of arm 57 is provided with an upwardly extending pro ect1on 60 adapted to strike against the bottom surface of the bottom portion19 of the knock out pm 15 of the die 13 brought to rest above the same, the downward movement of the press head and link 56 serving to raise the socket 41 in somewhat so that the leg mount 54 fastened on the upperend of the socket will be positioned a short distance above the top of the die.

It is, of course, now only necessary to remove 'the finished socket from the die recess which may be accomplished by known mechanism, as indicated in Fig. 12. As illustrated crank shaft 2 may carry an eccentrithereon to which a' vertical link 62 is connected. A block 63 is secured to the lower en of link62 and is suitably guided to rise" and fall each rotation of 2, A pick up lever 64 is pivotver 64 having a 'recess66 formed in one side of the same. As each tube 41 which has been somewhat raised in its die recess by the Fig. 11, comes around to the posit-ion indicated by the section line 1212 in Fig. 3, the tube 41 will enter the recess 66 in the djacent side of lever 64, with the leg mount Tube 41 being so positioned, the press head starts to rise. Pick up lever 64 tally positioned at this time by the previ- 67 on block 63 on which lever 64 rests. The end of lever 64 beneath'the le mount 54 will accordingly rise vertically a suflicient amount to lift the socket out of its cavity. The tail portion 64 of the pick upvlever then strikes against a fixed pin 68 and as block 63 continues to rise the stoppage of the tail portion of lever 64 willresult in swinging the lever in a counterclockwise direction about its pivot until the lever reaches a vert cal position, the com- .pleted caster socket being thereby thrown to the left. referring to Fig. 12.

It will be obvious that the operations described will be carried on. continuously, blank tubes being positioned by the operator in each die recess as the empty recesses reach the operators position and leg mounts being placed in position on each of the formed sockets as .fast as the latter position. It will also be obvious that the invention is not limited to the particular method of making sockets for casters which has been particuof the invention, I as of considerable breadth, as is indlcated 9 in the bolster 45. The

radii of said plate drawn having a pair of pressing mem 54 above lever 64.

is horizonticle in said die beneath larly various pressing operations ma be carred out by similar mechanisms within the scope the latter being considere by the accompanying claims.

1. In a press mechanism, the combination of aurotatable plate the periphery of which may bedivided into equalspaces by an odd number of dividing points, a plurality of dies spaced peripherally thereabout, at equal distances from the axis of said plate, on

through said dividing points, a plurality of pressing members, in line with the path of said dies, two of said members being separated other a distance equal to an even number of said equal spaces and a third one of said members being separated from one of said first two members a distance equal to an odd from each described, way of example, but that I number of said spaces, means for actuating of dies spaced equal distances apart, peripherallythereabout, a reciprocating press head ers,

the combination.

tione'd above the path of said dies, andmeans for rotating said plate step by step a distance of two die spaces upon each opera- U011 of sad press head, said pressing mem- -bers being separated from each other a distance equal to where 'n is an odd'number.

3. In a press mechanism, the combination of a rotatable carrier plate having a die therein, a reciprocating press head having a plurality of pressing members, and means for rotating said plate step by step equal distances in one direction to progress an arsaidpressing members, said die and pressing members all be- 3 times the feed of said plate,

ing positioned equidistant from the axis of said plate, two of said pressing members being separated from each other a circular distance equal to the circular movement of said die during each actuation of said rotating means, and another one of said pressing members being separated from one of said first two named pressing members a circular distance equal to an integral fraction of the circular movement of the die during each actuation, and the circular movement oi'said die each actuation being of a length which is exactly divisible into the {closed circular pathof said die plus-or'minus the circular distance between the third named pressing member and the adjacent one of said first two named pressing members.

4. In a press mechanism, the combination of a carrier (:1 procatmg press head having a plurality of pressmg'members, and means for intermittently. moving said plateequal distances in one direction to progress an article in said die beneath said pressing members. twoof said pressing members being separated frbm each other a distance equal to the move ment of said die during each actuation of said intermittent moving means, and another one of said pressing members being separated fromfone of said first two named pressing members a distance less than the movement of the die during each intermittent actuation, and each intermittent movement of said die being of a length which is exactly "divisible into one complete cyclic path of said die plus or minus the distance between the thirdnamed pressing member and the adjacent one of said first two'named pressing members;

5. In a press mechanism, the combination of a carrier plate having dies arranged therein to travel through a closed path, a reciprocating press head having a'plurality of pressing members of varying character, and means for moving said plate intermittently equal distances to progress articles in said dies beneath said pressing members, twoof said members being spaced apart one distance'and another being spaced from one of said first members a different distance, said plate moving-means being calculated to position an article in one .of said dies be: neath one of said members during one travel of the plate, and, during the next travel of the plate beneath said press head, to cause said article to be carried past said pressing member and positioned in alignment with another of said pressing members.

6. In a press mechanism, the combination of a rotatable carrier plate having dies arranged therein, a reciprocating press head having a plurality of pressing members, said dies and pressing members being in curved series equidistant from the axis of said plate, said dies being equally spaced apart, while a plurality of said pressin members are spaced apart one distance, and another one-of said members is spaced a difi'erent' distance from one of said'fir'st named members, so may be brought simultaneously in alignment with said pressing members,

and pawl plate having a die therein, a rethat various of said dies and ratchet mechanism for advancing said plate each actuation of said press head, through such a peripheral distance that certain of said dies will be positioned in alignment with onev of said pressing members during one revolution of said plate, and during the next revolution of said plate will be carried past said pressing member and will be positioned in alignment with another of said pressing members. 1

7. In a press mechanism the combination of a reciprocating press head having a plural ity of pressing members, a carrier plate having a plurality of dies, and means for moving said plate step by step partly under and partly not under said press. head, said moving means acting to move a given die into cooperation with certain only of said pressing members then out from under said press head and back again under said press head;

and into\co-operation with another of said pressing members until each die'has successively coacte'd with-each pressing mem ber, certain of said pressing members being spaced apart by one distance and another being spaced a different distance from one of said first named members.

8. In a press mechanism, the combination'of a rotatable carrier plate having a die therein, a reciprocating pres's head having a plurality of pressing members arranged in a curved series cpncentric with said plate, means in alignment with said pressing mem- I bers, adapted to lift an article from said die, and-means for rotating said plate step by step to progress an article in said dievbeneath said pressing members and adjacent to said lifting means, said rotating means being arranged to rotate said plate equal distances to position the article beneathcertain only of said pressing members, success sively, during one revolution of said plate, and only beneath other of said pressing members subsequently, and then to position the article in position to permit said lifting means to operate thereon, said first named.

members being equally spaced apart, and said other of said pressing members and lifting members being spaced at different distances from said first members.

Signed at New York, in the county of New York and State of New York, this 22d day of August A. D. 1921; I f

WALTER F. HEROLD.

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