US1097714A - Monotype casting-machine. - Google Patents

Description

S. F. GREENE. MONOTYPE CASTING MACHINE.

APPLIUATION FILED 001?. 2a, 1910.

Patented May 26, 1914;.

graves 143m;

To all whom it may concern SAMUEL 1F. GREENE, 0F YONKERS, NEW YCRK.

MONOTYPE CASTING-MACHINE.

Specification of Letters Patent.

LUWWWM.

Patented May 26, 1914..

Application filed October 26, 1910. Serial No. 589,098.

Be it known that I, SAMUEL F. GREENE, a citizen of the United States, and a resident of the city of Yonkers, county of Westchester, and State of New York,'have invented certain new and useful Improvements in Monotype Casting-Machines, of which the following is a full, clear, and exact specification.

The object of my invention is the devising of mechanism which, when combined with certain existing mechanisms of the monotype casting machine will operate to stop the type casting process without otherwise af fecting the operations of the machine, until at such time as it may be desired to again proceed with the casting of type.

' A further object of my invention is to devise'means adapted to be operated to cut out the type casting process during a predetermined period, which may be regulated by the operator at the keyboard.

The machine as at present known is capable of cutting out the casting operation for a definite time during a specific period, prearranged by. the operator at the keyboard. That is to say, a single piece of type is ordinarily cast at each revolution of the belt wheel of the machine, but the operator may if he desires so perforate the ribbon, that during a predetermined revolution of the belt wheel the casting operation will be suspended and replaced by a diiferent cycle of movements. This, however, will only last during one revolution of the belt wheel, or during the time required for casting a single type, unless the operator repeat the perforation on the ribbon at the keyboard. The

machine is also provided with hand operated mechanism for cutting out the casting'process. Either method of suspending the casting is ultimately accomplished by disconnecting the mechanism operating the pump,

'used to force metal into the mold. In my invention I also prefer to make use of this same pump disconnecting mechanism.' But I claim broadly any means to be used in conjunction with and operated by suitable mechanisms of the monotype casting machine, to the end that the operator at the keyboard may at pleasure effect a cuttin out of the casting process for any period 0 time, at any point in the preparation of his ribbon by simply striking the proper keys at each end of the space on the ribbon which corresponds to the period he desires to discontinue the casting operation. I therefore do not limit myself in an application of my invention to the pump disconnecting mechanism alone, for I well know the above re-' sults can'be attained by any means that will prevent the metal from getting into the mold, as for instance, if the nozzle of the pump be kept away from the orifice in the mold, even though the pump be continually operated, or, if the mold orifice be closed by any means to prevent metal from entering it and such mechanisms could be operated by use of the same perforations in the ribbon as are employed in my preferred embodiment as shown in the drawings.

My invention is most useful, as far as I am at present aware, for the purpose of killing a line. This is necessary when the operator has made an error as by striking a wrong key, and thus made a wrong perforation in the ribbon (which cannot be rectified). The line in which the error appears cannot be used in printing. It is obvious therefore that such a line should not be cast, and my invention is devised to hold the casting process in check while that portion of the ribbon representing the line containing the error is being fed to the caster.

It must be remembered that the keyboard contains 225 keys, each one operating to castbut a single piece of type, and many of such pieces being necessary to make a line. It can easily be seen, therefore, that in choosing the proper key each time from a group of 225, it is very likely that before so many keys are struck as will make a line on the galley, a mistake may often happen by pressing a wrong key. As can easily be seen, these mistakes are of frequent occurrence, and it is the object of my invention to prevent them from afi'ecting the output of the machine as far as possible.

The old way of treating a line (killing a line) in which an error had been made, was for the operator, as soon as he discovered the error, to repeatedly strike the quad key (or sometimes the w key on account of its size), and thus completethe line as quickly as possible. He then started a new line 1n the usual way, beginning with the matter that was on the linethat was killed. The

operator at the casting machine then hadto inspect the galley and to withdraw therefrom whatever lines contained mistakes. This method-"caused a loss oftime, both at "the casting machine and keyboard, and, as

the operator stopping his work when he finds he has made a mistake, to roll back the perforated ribbon to the beginning of the line in which the mistake occurs, and then to repeatedly strike a justification key until he arrives at the mistake, or at the point where he first discovered it. He then restores and resets the line'in the usual way. by a belt wheel. The ribbon, by .the prede- When this part of the ribbon. is presented to the caster, it will repeatedly'th'row the pump out of casting operation, for each revolution of the belt wheel, (.or perforation in the line) until the killed line (or portion' of the line) is fed past the caster.- This method leaves nothing for the operator at the casting machine to do in regard to the killed line, for there is no type cast. There is, however, wear and tear on those parts thrown into operation, on account of continually striking the justification key. There is also loss of time at the keyboard, while repeatedly striking the justification key.

By the use of my invention all that need be'done to kill a line is for the operator to strike one of the lower justification keys. He then restores and resets the line. lVhen this line (or portion of line) containing the error is passing the caster, the casting process is stopped once for all until the killed line has been passed by. The operator at the casting-machine need pay no attention to the matter Whatever, as there is no type cast, and there is no wear or tear as previously remarked.

I chine, Figure l is a front elevational view partly in section of my invention, combined- Referring now to the drawings which illustrate myinvention in conjunction with sultable parts of the monotype casting mawith parts of the monotype casting machine, alsopartly shown in section. Fig. 2 is an end view of thelower right hand part of Fig. 1, Fig. 8 is a view of the parts shown inthe lower left hand corner of-Fig. 1, and at right angles thereto,-and Figs. 4, 5 and 6 are fragmental' 'pl'an views partly in section showingthree positions of the operating mechanism shown in Fig. 1. i

The mechanism I devise is shown in the parts of the drawings indicated by the reference letters A, B, C'and D. The other parts shown in the drawings are those helonging to the monotypecasting machine.

The ribbon of tlie casting machine is prepared at. the keyboard by the operator by compressing keys much as in ordinary typewriting, which perforates the paper ribbon with a succession of holes running with the paper. Their positions across the paper depend upon the keys struck. This roll determinesthe matter to be printed. It is i this complex machine.

perforation (with a few exceptions soon to be explained) determines a specific type to be cast. Ordinarily only one perforation is presented to the casting machine d ning one revolution of the belt wheel.

-It'is not necessary for the purpose of my inventionto give a detailed description, or in fact any description at all,. of mostof Some parts,'however, must bemore fully explained. The'machine' is driven by a shaft, driven termined positioning of its perforations, is responsible for the extent to which certain parts of the machinemove. That is to say, it determines their stopping places. It also cuts in or out certain other parts to give them motion or no motion all in a predetermined manner, with the ultimate result that ea'chpiece of type is cast separately, formed into a line, properly justified, and then placed on the galley ready for the press.

The operator after completing his line by striking the proper type keys and space key has still to justify the line before beginning a new one. The upper twp rows of keys on the keyboard, are the justification keys.

These are operated to justify the line after i it is otherwise completed by the operator. The mechanism affected by perforations formed by these keys have most to do with my invention and will require to be clearly understood. I

The mold in which the body of the type is cast has among other thin s (unnecem ry to describe here), a rear wa l that may'ld fected by a wedge called the normal wedge,

slidingtransversely to theblade and acting through an intermediary as a backing or stop for the blade, changing its position and e ad-' justed in or out, called the blade. This blade the width of the type cast as the wedge moves to and fro. Each type represented on the ribbon, by a specifically positioned perforation, sets this wedge in a specific posit on. As each line may require a different thickness of-spacing other means are adopted which in conjunction with the spacingkey when depressed will set the normal wedge so that the proper thickness of space will be cast to justify the line. To accomplish this, thenormal wedge is made high enough to accommodate at its-back two wedges, placed one upon the other, thelower one being called the type transfer wedge,

noe /#14 the upper one the space transfer wedge.

effects a setting of the front justification wedge and the lower row the back wedge.

The lower one is the backing for the normal wedge when type is cast and is itself backed up by an abutment. The upper one is the backing for the normal wedge when a space is cast.

llllechanism is provided so that the spacing key will effect a locking of the lower wedge (type transfer wedge) out of engagement with the normal wedge and will at the same time throw the upper wedge (space transfer wedge) in, as a backing for the normal wedge. -This upper wedge is provided with a backing of two other wedge -placed one behind the other, called. the justification wedges. It is the proper setting of these wedges that determines the thickness of the space cast to justify the line. The wedges termed the type transfer wedge and space transfer wedge-ware strictly speaking, only backings for the normal wedges and have no automatic adjustment except to be thrown inland out of engagement as above described. The upper one is thrown in, through the instrumentality of the space key and after the space is cast the wedge is automatically thrown out and the lower wedge thrown in for type casting.

The justification wedges are set by means of the justification keys. The uppeurow' The operator when he has finished a line strikes the proper justification keys as indicated by the scale pointer.

It requires a revolution of the belt wheel to set a justification wedge, and during such a revolution the casting pump must be inoperative. Therefore, the controlling means for setting the wedges is employed to cut out'tlie pump. The ribbon roll is fed to the caster i the reversworder to its travel at the keyboard: that is to say, the last line is cast first, and it is likewise the last perforation in each line that is first presented to the caster. it is therefore the justification wedges that are first set before the line is cast. The mechanism that is employed to set the wedges, besides cutting out the pump while the Wedges are being set, also effects a removal of the line of type from the caster to the galley. it is these several parts now under consideration that are made use of by me in connection with my means for permanently looking out the pump until the killed line hadpasscd beyond the caster. As before stated, in my invention, to kill a line the operator has only to strike one of the lower ustification keys and to then restore and reset the line. Without my device the perforation made by this key would efiect, a cutting out of the pump for the one 'revolu than, at with my invention the pump is locked. out of operation permanen ly; that is to say, until. my mechimiemis 1"e revolution but without casting any type (as the pump is locked) until the justification perforations belonging to the line set by the operator previous to the killed. line meet the caster. One at least of these perforations was struck from the upper row at the keyboard, and when this reaches the caster,

my locking device is released, and the pump is again operative. It will then be seen that a perforation from a lower justification key will kill the line by looking out the pump,

for the next perforation to be presented.

On this account, as the keys used to justify the previous line are relied upon to release my device, and as a lower key will lock it, it must always be remembered in justifying that the operator first strikes an upper key, Whether it be single or double justification. This will present a perforation made by an upper key to the caster just previous to be ginning to. cast the live line and will insure a releasing of the pump in time to cast the first type in this line. a I

Referring to the drawings, the front justification wedge 1 is shown'in cross-section. It is provided with teeth 2 along its bottom. These engage with a permanenttooth (not shown) to lock the wedge in any set position. To reset the wedge, it must-first be raised free from the stationary tooth. This raising engages it with mechanism, the extent of whose motion is dependent upon the particular perforation then passing the caster made by striking the desired justification key. The wedge again drops and is locked by the before mentioned tooth. The other wedge and mechanism is similar to the one just described. The wedge shown, however, is the front wedge and is operated by means of the upper row of justification keys and its raising mechanism is used to re lease my locking-mechanism as before stated, while the raising mechanism of the other wedge acts, to lock the pump. Part of the mechanism for raising the wedge l is shown. It comprises a .lever 3 fulcrum-ed on the pin 4 permanently secured in the machine. The lever has an upwardly extending arm 5 pivoted to it by pin 6. The upper part of the arm is reduced-t0 a rod 7. The upper end of the rod is provided with an adjustable head (not shown) and is adapted to fit in the crotched end of an upwardly and downwardly moving lever called the centering pin lever (not shown). This up and down motion of thearm 5 swings the lever 3 and effects a raising and lowering of the wedge through its contact therewith at the point 3. lfhe rod 7, however, when in' normal position is out of engagement with the crotch, as 'it is" normally pulled to the right, and away. from the 'crotch'by a tension spring (not shown) hooked to the hook 8 formed on the extension 9. When, therefore, one of the perforations, formed. by striking a key rises and falls once for each revolution of. the belt wheel. .W'hen the rod 7 lowers with a horizontal plane.

Figs. 4, 5 and 6 when either wedge-raising shown.

in the upper row of justification keys is'pre-v sented to the caster, an air pin is blown up which strikes the horizontal leg of the bell crank lever toraise it, and'to force the vertical leg lO forward. This. forces the rod 7 into engagement with the crotch, which the crotch, it springs out of engagement therewith'as just described. It'will thusbe seen that the lever v3 can only be swung once for-each revolution of the belt wheel.

, shown) is operated by similar mechanism as the one It has similar operating mecha- The back justification wedge (not nism as wedge 1 and need not therefore be particularly described. The lever 3'h as the downwardly extending arm 11 provideafl with a nose 12. Fi s.- 4, 5 and 6 show the downwardly, extending arm 11 and nose 12 forming part of the raisinglever for the above referred to justification wedge .not shown; Below the lever is a rod 13 slidably mounted. in bearings 14' formed in the frame of the machine. On the front end of this rod is rigidly secured a downwardly and rearwardly extending arm 15. On the top of the arm is pivoted in horizontal position a rocker 16 by pin 17 and adapted'to rock in As clearly shown in lever is swung to raise its wedge, its nose the rod 13 and arm 15 secured to the center.

' Below the rod is themechanism for engagis swung in also. Fig. 5 shows the hose 12' and Fig. 6 the nose 12"as carried in. In-

either case of the. swinging in of .the nose,

of the ."rocker will likewise be carried. in (to the left)." The end of the rod .13 operates to set the mechanism necessary to place the line of type just east upon the galley.

ingjthe' pump with its driving .mec, anism. The pumpis driven through the medium of a bell crank and a cam lever, motion being transmitted from the cam lever to bell crank through a connecting rod 18. rod 18 is broken at a convenient place and the ends are connectedby the mechanism shown in Fig. 3 and the left hand lower corner of Fig.1; The break in the connecting rod 18 on the cam lever side has on its.

. end the fork 19. In this fork is pinned the link 20 by .pin 2lw The other end-of the break in the connecting rod is also provided The with a similar forked end in which is pinned the link 22 by pin 23. The two links are pinned together at their lower ends by pin 24:. The links are free to swing on the pins 21, 23 and 24;. Therefore as the cam lever end of the connecting rod 18 is moved to and fro it-will effect no motion of the other end that is to say, the bell crank end of the connecting rod and therefore the pump will not be operated. To-lock the two ends of the connecting rod together the. following mechanism is provided. On the pin 23 is loosely mounted latch 25. The latch has a lip 26 adapted to engage with the link 20 when its upper end and that of link 22 arein bearings 30, formedin the frame. On. theend of this rod is loosely pinned an up wardlyextending lever 31 called'the trip lever. This lever is pinned at its upper end to lug .32- formed on the frame. Thetrip lever is provided with a pin 33 which engages a shoulder 32tformed in the end of the arm 15. The lever 31 is thus always swung in by the arm 15 as it is pushed by either'one of the. nose pieces 12 or 12. The moving ofthe rod 29 to the left brings the collar 28 into. engagement with the exten- The motion of the cam sion 27 to raise the latch and disconnect the pump. This only acts for one revolution of the belt wheel, forimmediately when the pressure of the arm 15 is released, (that is to say, when the noses are back in their normal positions),-the rod 29 comes back to its normal position due to the ,pull eXerted -by the tension spring 35 secured to the frame atcne end (not shown) and at its other-end to the rod 2-9-by means of pin 36." The col:

lar 28 is thus freed; from engagement with "the latch 25 and assoon as the arm 20 moves back to contact with the arm 22, the lip" 26 of the latch, which has been riding on thegtop of arm 20 now drops .down be-. hind it and once more locks the pump in working position.

My invention is devised to hold the rod 29 in (to the left), so that thelatch 25 willbe continually raised until atsuch. time as it is desired to again set the pump in operation. Toaccomplish this I provide a locking lever B. This lever has one end pivoted to the rod 29, or for convenience of installation to. the foot of the arm 31 by means of screw a. A locking plate D is secured by screws 6 to the frame of the machine, at the back therewithin the slot and sets on the bottom thereof to freely slide to and fro with the move-' ment of the rod 29. A shoulder 03 is formed in the lever to permit it to drop when the rod 29 is in its extreme position to the left, bringing the shoulder a to coact with the back of the plate D, as shown in Fig. 1. The pump in thisposition is locked from operation. The end of the lever B is pref-- erably' formed into a handle B. This affords a hand operated means for setting or releasing the locking lever should the operator of the casting machine so desire.

To release my locking lever to permit the pump to again operate, I provide the following means: Above the locking lever I provide a lifting lever A. This lever is fulcrumed on the arm 31, by means of screw 6. Its forward end is connected to the looking lever B by means of link C. Its other end is turned upward and forward forming a nose f positioned tocoact with the end of the rocker 16 opposite the nose 12. This end of the rocker, when it moves inwardly, pushes the nose f with it, raising the front end of the lifting lever A, which brings with it the locking lever B. Thespring 35 is free to act when the locking lever is raised sufiiciently to permit the shoulder d to clear the bottom of the slot 0, and restores the pump into working operation.

The parts of my device are so proportioned that the bar 29 will move to the left sufliciently when the arm 15 pushes it in that direction to lock the locking lever B and when the forward end of the rocker swings back (that is to the left) the looking lever will be raised sufiiciently to release it from the plate D.

Reconsidering the various operations effecting my invention they are briefly as follows -The operator'justifies his line, always taking care (whether it be single or double justification) that he first strike one of the keysin the upper row of justification keys. After he has justified the line, he then restores his machine and starts a new line. This let us suppose he Wishes to'kill. To do this he strikes a single justification key of the lower row, restores his machine and resets the line. In being presented to the caster, the perforated ribbon acts in the reverse order to which it was prepared. Therefore, considering the killed line, the perforation made by the justification key of the lower row is first presented to the caster.

This swings the nose 12' and end of the" rocker 16 adjacent thereto in, which forces to the left rod 13, arm 15, lever 31, rod 29 and locking lever B. The shoulder d drops into locked position. The locking lever B and pump releasing mechanism is thus fixed, and the pump disconnected. 'The other parts return to their normal positions. XVith the pump locked out of operation, the other parts continue tomake their usual cycles of motions as each perforation of the killed line is presented to the caster, until the last perforation has passed and the justification perforations are presented. These set the justification wedges and the last one presented must be one from the upper row of justification keys. This operates an air pin to force the leg 10 of the bell crank against arm 5 forcing rod 7 into the crotch of the centering pin lever (not shown). This raises arm 5, swings lever 3 (raises wedge 1) carrying arm 11 to the left. This swings the adjacent end of rocker 1G to the left, which coacts with nose f forcing it to the left, to swing the lifting lever A. about its fulcrum e to effect a raising of the looking lever B. The spring 35 is then free to act and it draws the collar 28 to the right and away from the latch 25. This latch then drops down as before described bringing the pump again into casting operation ready to cast the first type represented by the next perforation as it is presented to the caster.

I have preferred to use one of the keys from the lower row of justification keys to effect a setting of my locking lever in locked position and to use a key from the upper row to release the lever, but I do not deem it beyond the scope of my invention if the order be reversed and the movements and mechanisms are so arranged that the upper row of justification keys will set the locking lever and the lower row of keys will release it. The manner of the justification and the proximity of the several parts which I use in conjunction with my device, make it preferable that I use the justifica-tion keys in the order described.

Having thus described my invention, I claim:

1. A control mechanism for pattern governed type casting machines including, in combination, the following elements, to-wit; independent signal controlled designating members; pump arresting means; and trans mitting devices provided with locking means for retaining the pump arresting devices in the operative position consequent upon the movement of one only of said designating members.

2. A control mechanism for type-casting machines including, in combination, the fol lowing elements, to-wit; independent signal controlled designating members; pump arresting devices; and intermediate transmitting devices including a locking'means responsive to one of said designating members.

3. A control inechanism for type-cast- 4 I v I 0 ing 'machmes 1nclud1ng,--1n cmnbinatlon,

the following elements, to-wit; independent signal-controlled designating members;

pump arrestin devices; and intermediate transmitting means responsive to one of said designating members. and releasing means responsive to the other ofsaid designating members.

4. A control mechanism for type-casting machines including, in combination, the following elements, to-wit; independent signalcontrolled designating members; automatically returnable pump arresting devices operatively responsive to said designating members; and control mechanism for said pump arresting devices including a locking means responsive'toone of said designating members.

5. A control mechanism for type-casting machines including, in combination, the fol;

lowing elements, to-wit; independent signalcontrolled designating members; automati-i 'cally returnable pump arresting devices operatively responsiveto said designating members; and control mechanism for said pump arresting devices including a locking means responsive toone of said designating members and releasing means responsive to' the other of said designating members.

6. A control mechanism for type-casting machines including in combination, the following elements, to-wit; independent signalcontrolled designating. members; automatically returnable pump arresting devices operatively responsive to said designating members; and control mechanism for said pump arresting devices including a locking Lever responsiveto one of said designating members and releasing means responsive to 40, the other of said designating members.

7/ 7. A control mechanism for type-casting machines, including, in combination, the following elements, t0-wit,' independent signal-,

controlled designating members, automatically returnable pump arresting devices operatively responsive to said designating members; and control mechanism for said pump arresting devices includin a locking lever responsive to one of said designating members, and a releasing lever responsive to g the pther of said designating members.

8. A controlv mechanism for type-casting machines including, in combination, the following elements to-wi't; independent signalcontrolled designating members; automatically returnable pump arresting devices operatively responsive --to said designating members; and control mechanism 'for said pilinp "arresting devices including means lockablvresponsive to one of said designating members, and 'releasa l v responsive to the other of said designa-ti g members.

9. A control mechanisrhl'for type-casting machines including, in combination, the fol- ("Slowing elements, to-wit; independent signalevices including alocking 'locking'lever responsive to one-of said controlled designating members; automatically returnable pump arresting devices operatively responsive to said designating members; and control mechanism for said pump arresting devices including a locking lever responsive to one of said designating members operating between afixed part of the machine'frame and a part of the said pumparresting devices in pivotal connection at one end with one of said parts, locking means at the other end of said, lever, and

means for releasing said lever responsive to the other of said designating members.

10. A control mechanism for type-casting machines including,'in combination, the following elements, to-wit; independent signal-controlled designating members; automatically returnable pump arresting devices operatively' responsive to said designating members; and control mechanism :tor said pump arresting devices including a designating members, pivoted to said pump arrest-ing devices at one end, means at the other end for locking said lever,i-a second lever above said first lever responsive to the other of said designating members also pivoted to said pump arresting devices, and a link connecting the said. levers at-their free ends to efiect a releasing of the'firstlever by the operation of the second lever.

11.. A control mechanism for type-casting machines including, in combination, the following elements, t0w1t; independent signalcontrolled designating members; automaticallv returnable pump arresting devices operatively responsive to said designating mem- Y bers; and control mechanism for said pump arresting devices including a locking lever responsive to one of said designating -members pivoted to said pump arresting devices at one end and having a niche at the other end, a slotted plate secured to the machine frame to slidably receive the'said niched end to lock the said lever, a second lever above said first lever also pivoted to said pump arresting devices, a link connecting thes'aid levers at their free ends, said second lever having its opposite end hook-shaped to make it responsive to the other of said designating members to release said first lever; j i,

12. In a type-casting machine, a pair of independent signal controlled designating members, automatically returnable pump arresting devices operatively responsive to either of said designating members, a swinging arm pivotally connected at one end tothe frame of said machine and at the other end to the said pump arresting devices and a control for locking and unlocking said pump -arrest-' ing devices adapted-to be pivotally secured to said swinging arm in-manner to be re-- sponsive to the said two designating mem -l so I members A, B,

for. making effectual said mechanism and means for releasing said latch means for holding said releasing means in engagement with the said latch for a predetermined period, and other means to release the said holding means. let, In a type casting machine having pump driving mechanism including a latch for making effectual said mechanism and means for releasing said latch; means for holding said releasing means in engagement with the said latch for a predetermined period, means operating said holding means at a'predetermined time in the working of said. machine, other means operable to discontinue the operation of the said holding -means,-and other means operating said discontinuing means at a predetermined time in the, Working of said machine.

15. In combination a pump trip tube, means for moving said tube forwardly, means forvautomat-ically restoring said tube, means for holding said tube against return movement, said last named means arranged to be automatically actuated, and means for throwing said holding means out of operation. e

16. In a type-casting machine. as described, pump arresting devices, a latch 25 adapted to .be raised for making eflective said arresting devi'ces, a collar 28 to engage the said latch to hold it in said raised position, a locking lever to retain the said collar 2-8 in engagement with thesaid latch 25, and means for releasing the said locking lever.

17. In a type-casting machine having pump driving mechanism including a latch for making effectual said mechanism and automatically returnable means for releasing said latch; a locking lever having one end free to be raised and lowered, means for locking said end in one of said raised or lowered positionsto operate said latch releasing means for a predetermined time, and other means for releasing said locked enc.

18. In a casting machine having a pair of independent justification wedge-raising means and pump driving mechanism including a latch for making efi'ectual said mechanism and' 'an' automatically returnable slidablebar for releasing said latch each of said wedge-raising means being adapted to effect a moving of the said slidable bar to release the said latch means for automatically locking said sli'dable bar when moved by one of said wedge-raising means, and means for releasing the saidlocking meansoperated by the other of said Wed e-raising means.

19. In a casting machine having a pair of independent justification wedge-raising means and pump driving mechanism includmg a latch for making effectual sald mechanism, an automatically returnable slidable bar, and a collar on said bar for releasing said latch, each of said wedge-raising means bein adapted to effect a moving of the said slida le bar to release the said latch; a looking lever having one of its ends free, means at said free end to automatically lock said is moved by lever when said slidable bar one of said wedge-raising means, and other means for unlocking sai lever operated "by the other of said wedge-raising means.

20. In a casting machine having a pair of independent justification wedge-raising levers and pump driving mechanism including a latch for making etl'ectual said mechanism, an automatically returnable slidable bar, an extension from said bar for releasing said latch when said baris moved'in one direction, a swinging arm pivoted at one end to the frame of the casting machine and at the other end to the slidable bar, and means operated'by either of said wedge raising 1e.- vers for swinging said arm to slide said bar to release said latch; mechanism operated to permanentl 1 release said latch comprising a locking lever carried by said swinging arm, means for locking said level when moved with said slidable bar by one of said wedge-raising levers to permanently release said latch, and other means operated by the other of said wedge-raising levers to unlock said locked lever. i

21. In a casting machine having a pair of independent justification wedge-raising levers ing a latch, an automatically returnable slidable bar, an extension from said bar for releasing said lat-ch when the said bar is moved in one direction, a swinging arm pivoted at one end to' the frame ofthe castin machineand'at the other end tothe s'lidable bar, and means operated by either of'the said Wedge-raising levers for swinging said arm to slide said bar to releases-aid latch; mechanism for permanently releasing the said latch comprising a lever carried by said swinging arm, means for locking saidlever when moved with said slidable bar by one of said Wedge-raising lovers to release said latch, a second lever pivoted to said swinging arm above the said first lever, and a link connecting the two levers together at their free ends, the said second lever having its opposite end formed to be moved by' the other of said independent wedge-raising levers to efi'ect a raising of the free ends of the linked levers to unlock the said lower lever.

22. In a. casting vmacl'iine having a pair and pump driving mechanism includ= of independent jiistific-ation wedge-raising ing a latch, an automatically returnable slidable bar, an extension from said bar for releasing said latch when the said bar is moved in one direction, a swinging arm pivoted at onerend to the frame of the casting machine and at the other end to the slidable bar, and means operated by either of the said Wedge-raising levers for swinging said arm to slide said bar to release said latch; mechanism for permanently releasing the said latch comprising a lever pivotedat one end to said swinging arm to be carried thereby and having a niche formed in its opposite end, a plate rigidly secured to the machine frame having a slot for retaining the said mched end of said lever 1n shding contact therewith and for engaging the said niche to lock the said lever when the said slidable bar is moved to release the said latch by. one of said wedge-raising levers, a second lever pivoted to said swinging arm above the said first-lever, and a link connectin the two levers together at their free ends, the said second lever having its opposite end formed to be moved by the other of said wedge-raising levers to efi'ect a, raising of the free ends of the linked levers to unlockthe said lower lever.

In Witness whereof I- have hereunto set my'hand'in the resence of two witnesses.

' AMUEL F. GREENE.

Witnesses r OLIVE B. KING, v HERMAN C. BATTALE,

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

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