US2268585A - Ornamenting machine - Google Patents

Description

Jan. 6, 1942.

B. W. FREEMAN ORNAMENTING MACHINE Original Filed June 5, 1936 6 Sheets-Sheet 1 Jan. 6, 1942. B. w. FREEMAN 2,268,585

ORNAMENT'ING MACHINE Original Filed June 5, 1956 6 Sheets-Sheet 2 m arwcmm Jan. 6, 1942 B, w, FREEMAN 2,268,585

ORNAMENTING MACHINE Originai Filed Jurie 5, 1936 6 Sheets-Sheet s Jan. 6, 1942. B. w.' FREEMAN ORNAMENTING MACHINE Original Filed June 5, 1936 6 Sheets-Sheet 4 miw/i ikezwam,

um mwwl Jan. 6, 1942. B. w. FREEMAN ORNAMENTING MACHINE Original Filed June 5, 1936 6 Sheets-Sheet 5 Jan. 6, 1942. B. w. FREEMAN ORNAMENTING MACHINE Original Filed June 5, 1936 6 Sheets-Sheet 6 i lgw VA Patented Jan. 6, 1942 Original application June 5, 1936, Serial No. 83,796. Divided and this application April 11, 1940, Serial No. 329,201

18 Claim.

This invention relates to ornamenting machines for use in the manufacture of boots and shoes, wherein is provided an ornamenting die operable upon the work. The present invention is adivision of a co-pending application, Serial No. 83,796, filed June 5, 1936, and is primarily directed to improvements in mechanism for securing and interlocking the die in the machine, and in safety features for controlling the operations of the machine when the die is unlocked from its support.

These features provide improvements in combined marking and cutting machines adapted for operations upon skins, upper blanks, fitted or closed uppers, and the like, in which the work ismarked with ink, pigment, or its equivalent, as part of a cycle of operations, during which an ornamental design is perforated or cut therein.

Devices and machines of this type are described and claimed in the patents of Benjamin W. Free man, No. 2,084,335, dated June 22, 1937, and

Benjamin W. Freeman et a1. Reissue 20,294, dated March 16, 1937, both of which were co pending with the aforesaid application.

These machines are of atype intended for use as universal cutout and marking machines,

specifically intended for work on shoes, leather,

and shoe materials, where the work is of widely varying contour and design, the machines being designed to operate, not only upon flat material,

but also to perform operations on other than flat markings and perforations or cutouts; andthe accomplishment of the marking and cuttingoperations either simultaneously or during a 0011- tinuous cycle of operations.

Reference to stamped or printed markings is made herein because of its universal adaptation to all types of leather; however, the present invention is likewise readily. adaptable to the production of other forms of marking, e. g., impression or indentation of the work. It' is a further object herein to provide means for changing from one form of marking to another by a slight adjustment, and without necessitating change of any part of the machine.

A still further objectcontemplates the applii cation of markings which maybe usedas a guide for subsequent operations on the shoe parts, such as aligning the parts relative to each other,

stitching, etc., the markings being applied at such a time and in such alocation with reference to the cutouts as to insure accuracy in the subsequent operations with relation to the cutout portions of the work.

It is contemplated further that the marking device may be combined with or form a part of the conventional stripper platewhich isnormally designed for stripping the work from the cutting edges of the die. H V i Various safety mechanisms assuring a predetermined cycle of operations, and designed to prevent injury to an operator or to the work by preventing premature, delayed or inaccurate operations form a feature of this invention.

As described in the aforesaid copending applications, and illustrated herein, a preferred embodiment of the machine has a power driven plunger movable through a relatively verticalplane, the plunger serving to mount a work support on which the work may be accurately posi-,

tione'd by meansof suitable gaging devices.

A die which is relatively fixed insofar as vertical movement toward the work supporting plunger is provided, and this die is arranged to move into and out of an operative relation to the plunger, the movements however, being confined to a substantially horizontal plane in the illustrated embodiment. Means are also provided for retaining the die against movement in any direction should it be desired to so operate the machine.

A backing medium of paper or its equivalent may be provided between the" work and thesupport, and the gaging devices may be carried by the work support, by the die, or otherwise interposed between the work supporting surface and the die.

A single control, as a treadle or its equivalent, is preferably utilized for the mechanism by means of whichthe die may be moved into an operatingiposition, the; marking elements of the die inked, the main clutch of the machine re leased,the Work support and plunger raised to effect an operation on the work, and return, and the die thereafter moved to a position away from an operator who may then remove the work from the machine.

' ward simplificationof such mechanisms, and improvement in certain constructions going to the except when the die is accurately positioned and locked in such position, in improvements in the die carriage driving mechanism, together with certain adjustments by means of which accuracy to a fine degree in the travel of the die may be accomplished regardless of wear in the machine,

and in improvements upon the automatic control means synchronizing operation of the various mechanisms.

While the present invention relates specifically to these improvements over the machine of the holding carriage H is mounted upon a guideway comprising tracks 24-24 in the upper portion of the housing, for horizontal movement from an inaforesaid patents, the general aims and objects asset forth therein are however, retained.-

- Ornamenting machines for forming cutouts" in a work piece, or for marking same, or for effecting both operations are of course known,'but the present machine is designed to meet increasing demands of work and operating pressures without increasing the size of the machine itself t an impractical degree.

In commenting upon the universal features of" this machine it should be noted that the structure is readily adaptable to various types of-dies and to various operations. For example, the die may be mounted to cut up or down, or in lieu of a die mounted within the machine, a self-contained auxiliary type of die and paper feed mechanism may be utilized by placement of such auxiliary unit upon the work support, which will then act to move the auxiliary unit with the work thereon toward the head of the machine, which head will function as a resistance or reaction member.

To the attainment of the'foregoing and other objects, which will appear as the description 'pro-. ceeds, reference may be made to the accompanying drawings, in which:

Fig. 1 is a side elevation machine;

Fig. 2 is a front elevation thereof;

Fig. 3 is a rear elevation of the machine base, illustrating a unit for supplying and rewinding backing material;

Fig. 4 is a fragmentary side elevation of the:

backing material unit;

Fig. 5 is a side elevation, partly in section, of the ink roll adjusting mechanism;

Fig. 6 is a front elevationof the ink roll adjusting mechanism; p

of a preferred'form of Fig. '7 isa fragmentary section through the head of the machine illustrating details of the automatic plunger control;

Fig. 8 is a fragmentary front elevation thereof;

Fig. 9 is a bottom plan of the die holder illustrating the die latching and safety control mechl I chine, on'a shelf or bracket 21. 30

operative position at the rear of the machine to an operative position over the work support, and return, rollers 25-25 being provided for the purpose.

' Power may be supplied to the machine through a constantly rotating fly-wheel pulley (not shown) which is mounted for free rotation upon a shaft S, extending through the machine. The shaft S will be connected to actuate the plunger P, and associated mechanisms, when clutched to the fly wheel. by suitable clutching means C, hereinafter described. The die carriage H may be conveniently actuated by a compact driving unit (Figs. 13, 14 and 15 and hereinafter described) mounted at the upper rear of the ma- Suitable belt gearing (not shown) or its equivalent is provided to connect this unit to the constantly driven fly wheel pulley carried by the main shaft S.

The general structure and operation of the machine as a whole is substantially the same as described in the aforementioned patents, to which reference may be made for further description.

' Paper feed unit v t It is customary to use a heavy paper or equivalent material as a backing medium beneath the work, to ensure a sharp, clean cut through the work piece, and also to protect the edges of a cutting die, and the roll of paper which is used is usually quite bulky, heavy and hard to handle.

:for rewinding thepaper into a take-up? roll, as

it is used.

Preferably, the paper will be supported by an idler shaft at the rear of the machine on the legs 2| and a run or web thereof will pass forwardly through the machine, across the, work support and back-to a rewind-er shaft which operates intermittently, in conjunction with a step by step feed of the paper.

In Fig. 3 itwill be seen that the legs 2| are reinforced or braced by a tie-rod 28, upon whichis mounted a bracket 29. This bracket is also secured to the top of the legs, and provides bearin place bya plate 34 having a spring pressed 3| of the idler shaft may be raised from the bear ing to permit placement thereon of a fresh roll of paper, without in any manner disturbing the rigidly secured short end 32.

A rewinder shaft similar in construction to the idler shaft and formed of two sections 36-31 connected together by a knuckle joint38, is supported by bearings 39-49. The short section 31 extends through a hexagonal bushing 40, which is rigidly secured by a set screw 4| in one bearing, and the longer section 36 extends through a similar hexagonal bushing 42 secured by a set screw 43.

A pulley 44, suitably belted to the driving mech anism of the machine,-is secured to the outer end of the short portion 31. In operation the driving belt will normally slip on the pulley '44 until the paper feed mechanism (not shown) becomes operative, whereupon tension on the paper being relieved, the pulley will rotate, and thus at all times, tend to keep the web of paper free of slack and rewound.

To remove a roll of paper, the set screw 43 will be released'and the long or handle end 36 of the rewinder shaft may be removed from its bearing. A collar 45 cooperating with an angle 46 serves to prevent endwise slippage of the rewinder shaft when changing rolls, and collars 41-41 serve to prevent endwise slippage of the paper roll on the shaft as well as to guide the rewinding thereof.

Ink roll adjustment mechanism The mechanism for applying ink or equivalent marking medium to the marking element is best illustrated in Figs. and 6 and as shown is practically the same as that illustrated in the Freeman et a1. Patent Re. 20,294, except for certain adjusting means.

Generally speaking, the ink applying unit comprises an inking roll 5| carried on a rotatable shaft 52 which is preferably, but not necessarily driven, this shaft being resiliently and adjustably mounted in a pair of brackets 53. Inasmuch as it may be found desirable to ink the die, only during its movement to working position, the brackets 53 are pinned to a rock shaft 54 so that the roll 5| may be raised into the path of movement of the die, and thereafter restored to its original or normal position out of such path. An idler or distributing roll 55 may be provided to insure even distribution of the marking medium on the roll 5|.

Conditions occur, however, in which too much or too little ink may be supplied by the roll 5|, and hence it becomes important that the position of the roll with relation to the marking edges of the die be made adjustable, such that the proper amount of ink will always be supplied to the marking die.

In my previous patents the projecting ends 56 of the brackets 53 were directly connected to a cam actuated lever such as the lever 51, which, through the cam, synchronized rocking movement of the brackets on the rock shaft with movements of the die. In the present instance, an adjusting means is interposed between the cam actuated lever and the brackets, this adjustment comprising a barrel 58, within which recipro'cates a rack plunger 59. The barrel is pivotally connected to the end of one bracket 56 and the plunger is pivotally connected to the end of the cam actuated lever 51.

At. the side of the barrel 58 is an enlargement depressed, thereby rocking the shaft 8|.

60 which houses a pinion meshing with the teeth of the rack plunger. A control shaft 6 I, keyed to the pinion, extends from the housing 60 to an accessible point on the machine, and terminates in ahandle 62. Cooperative with the handle is an index plate 63 which is perforated in a conventional manner as at 64 toreceive a spring pressed pin 65 in the handle 62.

Obviously, angular .movement of the handle along the plate 63, will rotate the pinion in the housing 60 and will produce a corresponding movement of the rack plunger 59, thereby varying the distance between the lever 51 and the bracket 56. A knuckle joint 66 is provided in the shaft 6| to accommodate angular movements of the housing 58 and the shaft may also be provided with collars 61-61 to prevent endwise slippage. This arrangement is effective to adjust the normal position of the roll 5| with re-' spect to the die and consequently will result in the application of more or less ink to the die in accordance with the adjustment.

Plunger and die carriage control of the clutch S, being held therein by a spring 14, in the path of a sliding clutch key or Wedge (not shown) which is spring pressed to traverse the groove. When this lever 13 is pulled out of the path of the sliding key as hereinafter described, then the key or wedge will slide freely into a coupling engagement with the pulley. For a more complete description of this type of clutch, reference may be made to my aforesaid copending cases.

Control of the machine is generally effected by the following mechanism. A treadle link 15 is connected to a rocking lug 16 which is pinned to a rock shaft 11 and effective thereby to set into operation the carriage driving mechanism shown in Figs. 12 and 14. All of this mechanism including the carriage drive is generally the same as that of the Freeman et a1. Patent Re. 20,294, except that a roller type of clutch has been substituted in 'the driving mechanism, in lieu of the sliding key type of clutch described in that patent.

As this mechanism is set in operation the carriage H moves forward from its position of rest at the rear, and as it approaches the forward or outermost position a roller 18 on the side of the carriage rides along a cam arm 19, to engage a cam carried thereby (Figs. 7 and 8). One end of the arm 19 is pinned to or integral with a rock shaft 8| which extends through the side of the frame F, and it will be evident that as the roller 18 engages the cam 80, the arm 19 will be Adjusting means 82 may be provided for properly positioning the cam 80 along the arm 19.

Keyed to the end of the shaft 8| outside of the frame or housing F is a link 83, which in turn is pivoted at 84 to a second link 85. This latter link 85 is pivoted at 86 to another link 81'. A

stud 88 extending from-a bracket 89 on the side of the frame F, serves to pivotally support, the link 81 to the frame of; the machine. A notched dog 90 is pivoted at tothe end of the link-81.

Also pivoted to the stud 88 is a tripping lever 92 which is provided with a flange 93 cooperative with the dog 90. The tripping lever 92 has a pivotal connection with a link 94, which in turn is pivoted to the clutch lever I3. Normally the notch in the dog 90 will be in engagement with the flange 93, and it follows that as the carriage approaches its forward or outermost position to rock the shaft..8I, the clutch lever 13 will be pulled out of the path of the, sliding key or Wedge in the clutch C, thus coupling the constantly driven pulley to theshaft S, initiating movement of the plunger. Y.

As the plunger starts to rise, the bar 95 which is rigid with the plunger abuts one end of a rocker arm 96 causing a stud 91 in the other end thereof to engage the dog 90 and release same from the flange 93, whereupon the clutch lever I3 is free to return to its original or declutching position, under influence of the spring I4.

The operation of releasing the dog 90 from the flange 93 can be effected at any time during the upward movement of the plunger, as the clutch will make a complete revolution before the shaft S will be declutched by the tapered end of the clutch lever I3, but preferably is completedwithinthe first half of the upward stroke.

The arm 95 carries an automatic treadling lever .98, the upper end of which is normally pulled in toward the frame F by a spring 99. A rigid stud I00, adjustably mounted in the frame F bears against the inner edge of the lever 98 and serves to limit and control the position thereof. This inner edge is formed with a cam notch HM, and with a dog or notched portion I02. Mounted on the rock shaft I! is a rocking lug I03, carrying a plate or flange I04, cooperative with the notch I02. Normally the treadle lever 98 is held outwardly, free of the flange I04, by the stud I00, but as the plunger rises, the cam notch IOI is brought into coincidence with the stud and the lever is then pulled-in by the spring 99 until the notch I02 engages the flange I04.

As the plunger moves downwardly the lever 98 will rock the lug I03, andthe shaft IT, in effect treadlmg the carriage driving mechanism a second time, just as though the treadle link 15 had beenactuated by an operator, thereby initiating movement of the carriage toward its return or innermost position. The notch I02 will slip off;

of the flange I04 during continued downward movement of the plunger, when the lever 98 again rides over the stud I00, whereupon, the spring I05 will return the linkage to its original or normal position.

The usual braking means described in the aforesaid patents is provided as indicated at B and is the same as in those patents except that it has been moved tothe opposite end of the shaft S. i

Die locking and safety latch mechanism Care should be taken, in machines of this nature, to protect the operator from injury, by inadvertent operation of the various moving parts, when changing a die, which necessitates placing the hands in the machine. Also it is important that the die be at all times securely held in accurate position on its holder orcarriage. MyPatent No. 1,990,597, granted February 12, 1936, discloses means for securing the die in place, and for locking the machine when the die is changed, and the present invention adopts the broad principles therein disclosed.

As best shown in Figs. 2, 9, 10 and 11, the lower face of the die carriage or holder H is formed, as heretofore, of a heavy plate H0, and the base plate III ofthe die is directly attached thereto, beingfirmly held in position by flanged lugs H2 which function to prevent springing of the die as the stripping pressures are applied to remove the work from the die. The die plate I II is provided with the usual wedge I I3 cooperating with a dovetail slot in the block H0 and with the usual upstanding perforated securing lug H4 which fits in the slot H5 of the block H0. The The conventional plunger H6 actuatable by a handle at the front of the machine for clamping the wedge in the dove tail slot is also provided.

Slidable transversely of the block H0 is the usual centering lock H1, which is mounted on a spring actuated rod H8 extending beyond the side of the block H0. A cam shaped retractor block H9 is mountedv on the outer end of the rod H8, and is pinned to a second rod I20 extending parallel to the rod H8, but of lesser length. In the lower face of the block H0 and extending across the slot H5 is a spring pressed lug plate I2I, shown in detail in Fig. 12. This plate is guided by pins I22 and pressed normally forward by spring I23 to a position where the rod I20 is blocked by the lug against inward movement across the slot H5.

Because of the connection between the cam block H9 and the rod I 20, the centering lock H1 is prevented from entering the dove tail wedge .I I3.

However, as a die is slipped into the lugs H2 and the dove tailwedge H3, the mg I I0 abuts the forward edge of the lug plate I2I, pushing it back against the springs I23 until the rod I20 is no longer blocked and is free to move inward under influence of the spring I24 which encircles the rod IIB. During this inward movement the rod I 20 passes through the perforation in the lug II4, to hold the lug and hence the die tightly in position, and at the same time centering lock III enters the usual notch in the dovetail wedge II3. As the cam block H9 is rigidly pinned to both the rods I 20 and H8, this entire die locking mechanism will always function as a unit.

In the event that extremely heavy dies are necessary, means ar provided to ensure retention of such dies against slippage or movement on the die carriage as the carriage travels back and forth. To this end two spring pressed plungers I26 may be provided at opposite sides or ends of the plateIIIl, controlled by eccentrics having handles I25. These handles act to position the plungers I26 either entirely within the block H0, or projecting into the die plate I I I, which may be perforated to receive the plungers.

In order to prevent any possibility of treadling a machine while a die is being changed, there is provided a handle I21 pinned to a rock shaft I28, which shaft extends through the fram F, terminating in an angular, tapered end or cam finger I29, adjacent the cam block I I9. The cam I29 cooperates with the cam block H9 to retract the rods H8 and I20 when it is desired to unlock or release a die, as the handle I2! is actuated.

A spring pressed plunger I30 rides in either on or the other of two holes in theframe at messes:

opposite ends. of: the. stroke of the handle, I21, serving to limit. the extentof movement of the handle, and hold same in position.

A treadle lock member I3I is. pivoted to the frame F' at I32, immediately above the rock lug 16, and terminates in a finger engageable with the lug 16 to prevent movement of the. rock shaft 11 when so engaged. A rod I33 is pivoted to this locking member I3 I, above the pivot point I32, and this rod extends through the frame in proximity to the wedge or cam block H9. As the block H9 moves outwardly, under influence of the cam I29, the rod I33 is consequently pushed outwardly depressing the lock member I3I until it engages the lug 16 thus rendering it impossible to treadle the machine.

On the other hand, when the wedge block 9 moves inwardly, a spring pressed plunger I34 mounted below the pivot point I32 will restore the lock I3I to normal position.

The stripping mechanism and means for applying stripping pressure is substantially the same as in'Freeman et al. Patent Re. 20,294, except that the posts which engage the stripper pressure plate I38 have been improved by the addition of a bar I31 connecting the posts at each. side of the plunger.

The bars may be rubber surfaced to absorb minor shocks as the stripper pressure plate. I38 is engaged.

Die holder driving mechanism The improved driving mechanism for the die holder or carriage H, is best illustrated in Figs. 1,

13, 14 and 15. This mechanism is mounted on a ble under control of the shaft 11, and driven conveniently from the main fly wheel pulley. A link MI is pinned to the shaft 11 and in turn yoked or pivoted at I42 to a connecting link I43 which is pivoted at I44 to a crank arm I45. Theother end of the arm I45 is connected to a clutch actuating link I46, which through engagement with aclutch control lever I41 is effective to remove the clutch stop I48 from the path of a block secured to the clutch tumbler I49. As this occurs, the spring I58 moves the clutch tumbler forward tocause a wedging engagement between the rollers of the clutch and the clutch hub, in a well known manner, whereupon the carriage H will be driven forwardly. To insure operation of the roller clutch through a second revolution to return the carriage a dual cam II is provided as heretofore.

There is a possibility that the clutch release mechanism I41, through poor adjustment or wear, might not release the clutch at the proper time, and to prevent any such occurrence and to ensure positive action, the cam driving gear I52 is provided with rollers I53I53, on opposite sides of the latch or locking portion of theclutch release mechanism. It follows that as the gear rotates, these rollers will engage the latch or looking portion of the clutch release and hold same in its unlocked position. The usual braking means are of course provided to bringthe parts to rest in a proper manner.

It is essential that the carriage comes to a stop in a predetermined position at the front of the machine,in alignment with the work support, and occasionally adjustment of this position to a fine degree is necessary. Adjustment of the tumblers of the clutch can be made relative to the clutch stop I48 through the medium of a fiat spring I54, adjustablymounted inthe frame or bracketat the rear of the machine. The upper end of the spring I54 is secured to the clutch hub. The stop I48 is made similarly adjustable and a fine degree of adjustment can be obtained by relative manipulation of these two elements.

Having thus described the invention the operation and automatic features thereof will be readily apparent. The normal position of rest is with the die carriage H at the rear of the machine away from the operator, and the work table or plunger P in its lowermost position, the main fly wheel pulley of course continuously rotating. Work may be placed on the plunger and, by suitable gage means, accurately aligned with the outermost or operating position of the die. Then through depression of the treadle connected .to the link 15,.the machine is caused to operate, the die carriage H moves forwardly, trips the plunger control, and the plunger rises to strike a hammer-like blow against the die, which has by this timereached a position of rest forwardly over the plunger. While striking the blow the stripper control posts carrying the bars I31 will have raised the stripper pressure plate I38.

As the plunger returns to its original position it trips the die carriage mechanism, and the die carriage recedes to the rear of the machine, the.

plate I38 in the meantime having acted through the stripping mechanism to strip the work from the die. The marking elements will have been inked on the forward stroke of the die carriage through the medium of the inking mechanism shown in Figs. 5 and 6.

With the arrangement of controls for the die carriage and actuating mechanism as described, it is possible to operate the plunger and carriage. in synchronized relation, to operate either to the exclusionof the other or to operatethe carriage through half of a complete stroke, i. e., outwardly to a forward position and stop, or-inwardly to a rear position and stop, either alone or in conjunction with the plunger movement.

It is further evident that the machine is designed for cutting, or marking per se, or in combination.

Application of or removal of heavy rolls of backing paper are facilitated.

Adjustments in the inking roll mechanism may be made handily to obtain an exact application of the proper amount of ink or marking medium to the marking elements of the die. The die locking mechanism not only provides means for holding the die securely in position, but also renders the machine impossible of operation during such time as the die may be out of position, for removal or replacement.

The entire construction herein described, is intended to be foolproof and the machine operations so simplified, safe and automatic as to make it possible for a relatively inexperienced operator to operate the machine without difficulty and in a safe manner.

It will be understood that this description is but illustrative and it is not intended that the invention shall be limited thereby other than as defined in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

1. An ornamenting machine comprising a work support, a die holder and a die, means to detachably mount said die on said holder and lock the die in position, mechanism providing relative movement between said support and holder to ation, and means cooperative with said locking means to lock said mechanism when the die is unlocked, comprising a member slidable into the path of the die and a member actuatable by the die to control movement of said slidable member.

3. An ornamenting machine comprising a work support, a die holder and a die, means to lock said di in position on the holder comprising a stud adapted to extend into the die, mechanism providing relative movement between said support and holder to effect an ornamenting operation, and means cooperative with said locking means to lock said mechanism when the die is unlocked, comprising a second stud slidable into the path of the die and a spring pressed plate actuatable by the diev to a position in the path of movement of said second stud.

4. An ornamenting machine comprising a work support, a die holder and a die, means to detachably mount said die on said holder and lock the die in position, mechanism providing relative movement between said support and holder to effect an ornamenting operation, and means cooperative with said mounting and locking means to lock said mechanism when the die is unlocked, comprising a member slidable into the path of the die and a member actuatable by the die to control movement of said slidable member, and means controlled by said slidable member for engaging said mechanism.

5. An ornamenting machine comprising a work support, a die holder and a die, means to lock said die in position on the holder comprising a stud adapted to extend into the die, mechanism providing relative movement between said support and holder to efiect an ornamenting operation, and means cooperative with said locking means to lock said mechanism when the die is unlocked. comprising a second stud slidable into th path of the die and a spring pressed plate actuatable by the die to a position in the path of movement of said second stud, and manuallycontrolled means associated with said slidable position, and means to restrain said die from springing under operating pressures applied thereto.

7. In an ornamenting machin having a die holder and a die, means to detachably mount said die on said holder, means to lock said die in position, and means to hold said die against lateral slippage relative to the die holder during movements of the die holder.

8. In an ornamenting machine having adie holder and a die, means to detachably mount said die on said holder, means to lock said die in position, and means to restrain said die from springing under operating pressures applied thereto, and against lateral slippage relative. to the die holder during movements of the die holder.

'9. An ornamenting machine comprising a work support, a die holder and a die, means to'detachably mount said die on said holder and lock the die in position, mechanism providing relative movement between said support and holder to effect an ornamenting operation, means cooperative with said mounting and locking means to lock said mechanism when the die is unlocked. comprising a member slidable into the path of the die and a member actuatable by the die to control movement of said slidable member, and means to restrain said die from springing under operating pressures, when the die is locked in position.

10. An ornamenting machine comprising a work support, a die holder and a die, means to detachably mount said die on said holder and lock the die in position, mechanism providing relative movement between said support and holder to eiiect an ornamenting operation, means cooperative with said mounting and locking means to lock said mechanism when the die is unlocked, comprising a member slidable into the path of the die and a member actuatable by the die to control movement of said slidable member, and means to hold said die against lat-,

eral slippage relative to the die holder during movements of the die holder.

11. In an ornamenting machine having a die holder and a die, means to detachably mount said die on said holder, means to lock said die in position on said holder, and means additional to saidlocking means to insure retention of the die against slippage or movement on the die holder comprising a socket in the die and a plung er mounted in the die holder for movement into and out of the die socket, and means to actuate said plunger. v

12. An ornamenting machine comprising a work support, a die holder and a die, means, to detachably'mount said die on said holder, and means to locate and lock said die in position, mechanism providing relative movement between said support and holder to effect an ornamenting operation, and means cooperative with said die locating and locking means to lock said mecha-' nism when the die is unlocked, comprising a member slidable into the path of the die, and a. member actuatable by the die to controlmovement of said slidable member, said locating and locking means including in part, a member movable into engagement with a fixed portion of the die, during movement of said slidable member.

13. An ornamenting machine comprising a work support, a die holderand a die, means to lock said die in position on the holder comprising a stud adapted to extend into the die, mechanism providing relative movement between said support and holder to effect an ornamenting operation, and means cooperative with said locking means to lock said mechanism when the die is unlocked, and vice versa, comprising a second stud slidable into the path of the die, and a spring pressed plate automatically movable to a position in the path of movement of the second stud, when the die is unlocked, and engageable by the die for movement to a position away from the path of the second stud, when the die is located properly on the holder, means for moving said studs as a unit into and out of die locking position, and means associated therewith for engaging and locking said mechanism.

14. In an ornamenting machine having a die holder and a die, and means to detachably mount said die on said holder, means to lock said die in position, means cooperative therewith to lock said machine against operation when the die is unlocked from its holder, means to restrain said die from springing under operating pressures applied thereto, and against lateral slippage relative to the die holder during movements of the holder, and manual means to control said die locking and machine locking means simultaneously.

15. An ornamenting machine having a die holder and a die, means to detachably mount said die on said holder, means to lock said die to said holder when the die is in accurately alined position in the machine, means to positively inhibit locking said die to the holder when said die is in other than accurate position, and means controlled by said die locking means to inhibit operation of the machine until said die is locked in accurately alined position.

16. In an ornamenting machine having a die holder and a die, means to detachably mount said die on said holder, and means to lock said die in position on said holder comprising interengaging means operatively interposed between said holder and die, spring means cooperative with said inter-engaging means to inhibit locking of said die until the die is in an accurately located, normal working position on said support,

and automatically operating means to effect the locking of said die when same is accurately located.

1'7. An ornamenting machine comprising a work support, a die holder and a die, means to detachably mount said die on said holder, and

means to lock said die in position on said holder, mechanism providing relative movement between said work support and die holder to efiect an ornamenting operation, said die locking means comprising inter-engaging means opera-tively interposed between said holder and die, spring means cooperative with said inter-engaging means to inhibit locking of said die until the die is in an accurately located normal working position on its support, and automatically operating means to efiect the locking of said die when same is accurately located, and cam means cooperative with said locking means to lock said mechanism when the die is unlocked, thereby inhibiting operation of the mechanism at all times when the die is in other than accurately located normal working position.

' 18. An ornamenting machine comprising a work support, a die holder and die, means to de' tachably mount said die on said holder, and means to lock said die in position, mechanism providing relative movement between said work support and die holder to effect an ornamentingv

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