US2157795A - Typographical machine - Google Patents

Description

' y R. R. MEAD TYPOGRAPHICAL MACHINE 3 Shets-Sheet 1 Filed Dec. 31, 1957 INVENTOR W m May 9,1939. IR. R. MEAD 2,157,795

TYPOGRAPHICAL MACHINE Filed Dec. 31, 1957 3 Sheets-Sheet 2 INVENTOR Patented May 9, 1939 UNITED STATES TYPOGRAPHICAL MACHINE Richard R. Mead, Queens Village, N. Y., assignor to Mergenthaler Linotype Company, a corporation of New York Application December 31, 1937, Serial No. 182,691

20 Claims.

This invention relates to typographical machines, such as Linotype machines of the general organization represented in Letters Patent of the United States, No. 436,532, to O. Mergenthaler, wherein circulating matrices are released from a magazine in the order in which their characters are to appear in print and then assembled in line, the composed line transferred to the face of a mold, the mold filled with molten metal to form a slug or Linotype against the matrices which produce the type characters thereon, and the matrices thereafter elevated and returned through distributing mechanism to the magazine from which they started.

More particularly, it relates to machines equipped with a plurality of magazines containing different matrix fonts and which are arranged to be moved upwardly and downwardly in the machine to bring one or another into operative relation to the assembling and distributing mechanisms. In such machines, the magazines are independently removable and replaceable and, to this end, are arranged to be spread apart in order to permit access to the magazine to be removed which, for this purpose, is first located in operative position. Provision is also made for raising the magazine to be removed clear of its supporting base frame and escapement mechanism, as well as the assembler throat, so that it may be drawn forwardly by the operator and supported in a vertical position at the front of the machine on arms pivotally arranged thereon and adapted to be swung into a position wherein they will support the magazine in the manner stated. The replacement of a magazine is effected by reversing these operations.

According to the present improvements, the pivotally mounted arms on which the magazines are supported at the front of the machine are permanently secured on the machine frame and normally located in an inoperative position alongside of the bank of magazines. As the magazine to be removed is located in operative position, mechanism associated therewith is automatically brought into operative relation with devices operated by one of the pivoted arms, so that, as the arms are swung forwardly into their active magazine supporting positions at the front of the machine, such magazine (1. e., the one to be removed) will be lifted off its supporting base frame into a position wherein it Will clear its associated escapement mechanism and the assembler throat during removal from the machine. And likewise, in the case of a replacement magazine, the return movement of the pivoted arms to inactive position will lower such magazine onto its supporting base frame, wherein it will be properly located with respect to its escapement mechanism.

Also, in accordance with the invention, safety devices are provided for locking the pivoted arms against movement until the magazines have been properly spread to permit the removal of the selected one, and also to insure that the matrices are locked in the selected magazine prior to its disengagement from its escapement mechanism.

Referring to the drawings:

Fig. 1 is a side elevation of the magazine structure of a linotype machine equipped with the present improvements;

Fig. 2 is a View similar to Fig. 1, but with the magazine supporting arms shown in active position and with a magazine raised off its supporting base frame and ready to be removed;

Figs. 3, 4 and 5 are sectional views taken respectively on lines 33, 4-4 and 5-5 of Fig. 1.

The matrices are stored according to font in in the superposed channeled magazines A, four of which are shown herein but of which a greater or less number might be employed, if desired. The several magazines are removably supported upon separate base frames A conj ointly constituting a shift frame which is arranged to be moved upwardly and downwardly in the fixed machine frame in the well known manner to bring any selected magazine into operative relation to the assembling mechanism B at the lower end and the distributing mechanism (not shown) at the upper end. Each of the magazines is provided with a series of matrix releasing escapements D which, when the magazine is brought into operative position, are actuated under the control of the keyboard mechanism in the usual way. In the present instance, the three upper base frames A are pivoted at. their upper ends, as at A to a pair of plates A rising from the lowermost base frame, so that the base frames and their respective magazines may be separated or spread apart to permit the independent removal of any selected magazine. Such separation of the magazines is effected by means of a hand lever J fixed to a transverse rock shaft J journalled in the lowermost base frame and provided at its opposite ends with arms J connected by links J to the uppermost base frame (the arms J and links J constituting toggle joints) and two pairs of lifting links or hooks J and J pivotally suspended one pair from each side of the uppermost base frame and formed in their front edges with notches J and J. The hooks J and J are arranged to be turned about their pivotal axes so as to move their notches into and out of operative relation, respectively, with studs (1 and a protruding from the sides of the magazine base frames that support the second and third magazines from the top.

According to this arrangement, when it is desired to remove the second magazine from the top, both pairs of links J and J are held rearwardly as shown in Fig. 1, so that, as the hand lever J is pulled forwardly from its upper vertical position to its lower position, the toggle joints (consisting of the arms J and links J will be straightened out to raise only the upper base frame, so that access may be had to said second magazine. If the third magazine is the one desired to be removed, the upper pair of links J is moved so as to bring the notches J in the forward edges thereof into engagement with the studs a associated with the supporting base frame of the second magazine, so that, as the hand lever J is pulled forwardly, the supporting base frame of the second magazine will be raised, together with the top one, thus giving access to the third magazine. And similarly, if the lower magazine is the one desired to be removed, both pairs of links J and J are moved, so as to bring the notches J J therein into engagement with the studs (1, a associated with the supporting base frames of the second and third magazines, so that, upon the operation of the hand lever J, all three upper magazines will be raised, thus giving access to the lowermost magazine. The return movement of the hand lever J to its normal upright position will restore the base frames, and consequently the magazines, to normal position after the replacement of a magazine has been made.

At this point, it might be observed that the links J and J are formed in their rear edges with laterally projecting lips J and J which overlap one another, the lips J associated with the longer links J 5 being located at the rear of the lips J associated with the links J, the arrangement being such that, as the links J are moved into engagement with the studs 11. associated with the base frame of the third magazine, the links J will automatically be brought into operative relation with the studs a associated with the base frame of the second magazine. The arrangement also facilitates the disengagement of the upper pair of links J from the studs a or both pairs of links J and J from their respective studs a and (.2 depending upon whether the one pair or both pairs have been operative, merely by moving the upper pair of links to inoperative position, as a result of the overlapping relation of the lips J J just described. The toggle and link arrangement for spreading the magazines is similar to that described in the Southern Patent No. 1,816,094, and reference may be had thereto for a further description of the parts.

As best shown in Figs. 1 and 2, each bank of escapements D is mounted in the usual manner in a supporting bar or frame D which frame is secured or otherwise fastened to the lower side of the corresponding base frame A As ordinarily, the magazines are formed on their'undersides with transverse slots or openings to receive the escapement bars, the latter being formed on their upper sides with grooves which extend across the magazine openings and constitute in effect continuations of the grooves in the bottom plates of the magazines. Such being the relation of the parts, it is apparent that before a magazine can be removed, it must first be disengaged from its escapement bank. For this reason, each base frame is provided with a central magazine lifting and supporting plate E (see Figs. 1, 2 and 3), which in the present instance is substantially as long as the base frame itself and which is located in a corresponding groove or recess E formed in the upper side of the base frame. At its upper end, the plate E is pivoted to the base frame as at E thus permitting it to be swung upwardly in lifting the magazine; and at its lower end, it is provided with a stop shoulder E normally engaged with the customary forward transverse rib a on the underside of the magazine and which thus retains the magazine in place on the plate when the latter is in its raised position.

In the embodiment illustrated, the swinging of the magazine lifting and supporting plate of each base frame is controlled and effected by a cam or equivalent device F, arranged near the lower end thereof and fast to a transverse rock shaft F journalled in the base frame. This cam (Fig. 2) is provided with a notched or hook shaped piece F adapted, when the cam is turned upwardly, to engage a pin F on the edge of the plate E and. thus lock the latter in its proper raised position. The cam is limited in its downward movement by a stop lug F on the base frame, the plate E in its lowered position resting upon the base frame at the bottom of the containing groove E The parts as thus far described and their mode of operation are or may be substantially as illustrated in the McNamara Patent No. 1,586,316, or in the Southern patent, heretofore alluded to.

According to the present invention, the transverse rock shafts F for operating the cams F which raise and lower the magazines with respect to their supporting base frames are operated by a common device, the shafts being provided with means which is automatically coupled with such device for operation thereby as the respective magazines are moved into operative position, it being recalled that a magazine must be moved into operative position in order to be removed.

As shown in Figs. 3 and 4, the common device referred to includes in part a short stub shaft G journalled in a bracket H fixed at the left of the machine and in coaxial alinement with the rock shaft F associated with the magazine in operative position. At the right end of the shaft G, there is pinned a collar G formed in its face with a groove G which, in the normal position of the parts, extends in the direction of movement of the shift frame. At the left end of each rock shaft F there is pinned a collar F formed with a tongue F which is in alinement with the groove G when its associated magazine is resting on its base frame. Consequently, as a magazine is raised or lowered into operative position, the tongue F of its associated rock shaft will enter into the groove G formed in the collar G thus effectively coupling the rock shaft F and the stub shaft G together. If the shaft G is now turned in a counterclockwise direction. looking at the parts from the right, the coupled rock shaft F will likewise be turned thereby in the same direction to raise its supporting plate E and lift the corresponding magazine off its base frame. And similarly, when a replacement magazine has been located on the supporting plate E, the return movement of the stub shaft G to its normal position will lower such magazine onto the supporting base frame and into engagement with the escapement bank, all in the manner previously described.

The stub shaft G is operated by an arm K pivotally mounted at the top front of the fixed bracket H, through connections which include a link K connected at one end to the arm by a headed pin K threaded into the arm and passing through a slot K formed in said link. The connections further include a small crank arm G pinned to the stub shaft G and pivotally connected at its end to the lower end of the link K According to this arrangement, when the arm K is moved from the position shown in Fig. l to the position shown in Fig. 2, the stub shaft G, through the connections just described, will be rotated through an angle of 90 to lift the magazine in operative position off its base frame through the medium of its supporting plate E, to a position wherein the magazine can be removed and, when the arm K is turned back from the position shown in Fig. 2 to the position shown in Fig. l, a replacement magazine previously located on the supporting plate E will be lowered into operative position on the base frame. At this point, it might be stated that the arm Gr includes a cup-shaped hub portion (Figs. 3 and 4) which houses a torsion spring Gr acting to urge the arm against a stop G presented at the base of a slot H formed in the fixed bracket H and through which a portion of the arm extends. The purpose of this is to insure the proper alinement of the groove G with the tongues I when the parts are in normal position.

While the arm K for operating the shaft G could be of any suitable construction, it is pro posed, in accordance with the present invention, to use it as one of a pair of arms for supporting the magazines at the front of the machine during the removal and replacement operations and, to this end, the arm is formed with a centrally disposed rib K which, in the forward or active position of the arm, is located in alinement with the supporting plate E of the magazine in operative position, i. e., when the supporting plate E is in its raised position, as shown in Fig. 2. The arm K is located in this position by a lug K with which it is provided and which banks against a shoulder presented by the fixed bracket H in which it is pivoted. It will be observed that the arm K is equipped with a handle k to aid the operator in moving it to active position. The machine is also equipped with a similar arm K at the right, constituting the other arm of the pair, and which is pivotally mounted in a fixed bracket H and formed with a lug K cooperating with a shoulder in the bracket for locating it in its forward position for the support of the magazines during removal and replacement. When turned rearwardly to its inoperative position, the arm K rests upon a pin H extending inwardly from its supporting bracket H Both arms at their forward ends present shoulders K to engage the ends of a cross rib (13 with which the magazines are provided near their upper ends to support them in a vertical position at the front of the machine during removal and replacement. In other words, except for the handle k, the manner in which it is supported in its inactive position, and except also for the fact that it does not enter into the raising and lowering of the magazines with respect to their supporting base frames, the arm K is in all respects similar to the arm K.

The pin and slot connection between the arm K and the link K provides a degree of lost motion which permits the arm to occupy an inconspicuous position at the side of the bank of magazines, where it is out of the way. To compensate for this lost motion and to insure a smooth action of the parts in lowering a magazine upon its base frame, there is provided an auxiliary link K pivotally connected at its lower end to the link K and supported at its free end by means of a stud K (see Figs. 1 and 3) resting upon the upper edge of the bracket H and adapted to engage the head of the pivot pin K in the arm K when the latter is swung to its forward position. According to this arrangement, as the arm K is turned rearwardly to its inactive position, it will, through the pin K act positively and continuously on the auxiliary arm during the interval that the lost motion between the arm K and the link K is being taken up.

It will be observed that, when the magazines are elevated out of engagement with their corresponding escapements, the contained matrices would be free to pass therefrom unless they were first locked therein, and hence means are provided to prevent the operation of the stub shaft G until the matrices have been locked in the magazine. In the present instance (see particularly Figs. 1, 3 and 4), such means comprise, for each magazine, a centrally pivoted latch L mounted in the left hand projection of the escapement bar D and an upright arm G fast to the collar G which contains the groove G that cooperates with the tongue F associated with each of the rock shafts. The latch is normally held in the path of the arm G by a spring (not shown), so as to lock the stub shaft against rotation, but the latch is arranged to be disengaged from the arm by the usual matrix locking rod M which is inserted through the edge of the magazine in the customary way. This matrix locking rod, as it is pushed home, engages the front end of the locking latch L and locks it against the action of its associated spring clear of the arm G When the matrices-are thus locked in the magazine, the stub shaft is free to be rotated to swing the magazine upwardly out of engagement with the escapements preparatory to removal. In place of the detachable matrix locking rod, the magazines may be provided with permanent looking rods, such as shown and described in the Kennedy Patent No. 1,347,638, which are shiftable in an endwise direction to lock or unlock the matrices.

A safety device is also provided for locking the magazine supporting arm K against movement in the event the magazines have not been properly spread preparatory to the removing operation. Such means (see Figs. 3 and 5) include a pawl N controlled by lugs N protruding laterally from the sides of the magazine base frames, that is, all of the base frames, with the exception of the lowermost one. This pawl is pivoted on the fixed bracket H and, in the normal position of the parts, is adapted to be engaged by the lug N associated with the base frame of the magazine next above that in removal position. When thus engaged by the lug N a nose portion N on the pawl protrudes into a recess k formed in the arm K and is held therein against the tension of a small pull spring N fastened to the pawl at its lower end, thus locking the arm against movement (see the dotted line position of the parts in Fig. 5). However, during the spreading operation, the lug N passes out of engagement with the pawl N, thus permitting the latter to be moved under the action of the spring N out of engagement with the arm K, i. e., to the position shown in solid lines in Fig. 5. In this position of the parts, the arm K is free to be swung forward to its active position to raise the magazine in operative position off its base frame, so that it can be removed, all in the manner hereinbefore described.

It is believed that the operation of the parts will be entirely clear from the foregoing description. However, to recapitulate, it may be stated that in removing any selected magazine, such magazine is first brought into operative position, thus automatically coupling the rock shaft F associated with its supporting base frame with the stub shaft G. Next, the magazines are spread apart so as to give access to the magazine to be removed, this operation effecting the release of the arm K by the pawl N. The matrix locking rod M is inserted through the edge of the magazine in well known manner and, as it is pushed home, it operates the releasing pawl L to free the stub shaft for rotation. The magazine supporting arms are now swung to their forward or active position and, as the arm at the left is actuated, the plate E, through the stub shaft G, and the respective rock shaft F is moved upwardly to lift the magazine out of engagement with the escapements, that is, to the position shown in Fig. 2. The magazine is then free to be slid forwardly onto the supporting arms and removed in the customary way, as indicated by the dotted lines in Fig. 2. In substituting a new magazine, the above operations are simply reversed, that is to say, after sliding the substitute magazine back onto the lifting and supporting plate E, the supporting arms are moved rearwardly to their inactive positions and, as the arm at the left is thus moved, the substitute magazine is lowered into engagement with the escapements, which, of course, remain in place upon the base frame, and the matrix locking rod then withdrawn to permit the matrices to be released from the magazine when in use. The hand lever J is then operated to restore the magazines which were spread apart back to their normal positions.

In the accompanying drawings, the invention has been shown merely by way of example and in preferred form, and obviously many variations and modifications may be made therein which will still be comprised within its spirit. It is to be understood, therefore, that the -invention is not limited to any specific form or embodiment, except insofar as such limitations are specified in the appended claims.

Having thus described my invention, what I claim is:

1. A typographical machine including, in combination, a shift frame, a plurality of independently removable matrix magazines carried by said frame, a corresponding plurality of escapement banks mounted in the shift frame in operative engagement with the magazines, mechanisms carried by the shift frame in association with each magazine for lifting the individual magazines out of engagement with their corresponding escapement banks preparatory to removal or replacement, and common devices mounted on a relatively fixed part of the machine for selectively operating the respective magazine lifting mechanisms.

2. A typographical machine including, in combination, a shift frame, a plurality of independently removable matrix magazines carried by said frame, a corresponding plurality of escapement banks mounted in the shift frame in operative engagement with the magazines, mechanisms carried by the shift frame in association with each magazine for lifting the individual magazines out of engagement with their corresponding escapement banks preparatory to removal or replacement, and common devices mounted on a relatively fixed part of the machine and including a pivotally mounted arm for selectively operating the respective magazine lifting mechanisms.

3. A typographical machine including, in combination, a shift frame, a plurality of independently removable matrix magazines carried by said frame, a corresponding plurality of escapement banks mounted in the shift frame in operative engagement with the magazines, mechanisms carried by the shift frame in association with each magazine for lifting the individual magazines out of engagement with their corresponding escapement banks preparatory to removal or replacement, means mounted on a relatively fixed part of the machine and movable from an inactive to an active position for the support of a removed or a replacement magazine, and common devices actuated by said means for selectively operating the respective magazine lifting mechanisms.

4. A typographical machine including, in combination, a shift frame, a plurality of independently removable matrix magazines carried by said frame, a corresponding plurality of escapement banks mounted in the shift frame in operative engagement with the magazines, mechanisms carried by the shift frame in association with each magazine for lifting the individual magazines out of engagement with their corresponding escapement banks preparatory to removal or replacement, a pair of arms pivotally mounted on relatively fixed parts of the machine and movable from an inactive to an active position for the support of a removed or a replacement magazine, and common devices actuated by at least one of said arms for selectively operating the respective magazine lifting mechanisms.

5. A typographical machine including, in combination, a plurality of matrix magazines, a shift frame wherein the magazines are supported for independent removal and movable to bring one or another of the magazines into operative position, a corresponding plurality of escapement banks mounted in the shift frame in operative engagement with the magazines, mechanisms carried by the shift frame in association with each magazine for lifting the individual magazines out of engagement with their corresponding escapement banks preparatory to removal or replacement, and common devices for operating said mechanisms and arranged to be connected automatically to any one thereof as the corresponding magazine is moved into operative position.

6. A typographical machine including, in combination, a plurality of matrix magazines, a shift frame wherein the magazines are supported for independent removal and movable to bring one or another of the magazines into operative position, a corresponding plurality of escapement banks mounted in the shift frame in operative engagement with the magazines, mechanisms carried by the shift frame in association with each magazine for lifting the individual magazines out of engagement with their corresponding escapement banks preparatory to removal or replacement, and devices mounted on the machine amass and arranged to -be connected automatically for the selective operation of any one of said mechanisms by the movement 'of the corresponding magazine into operative position.

7. A combination according to 'claim 1, wherein the shift frame includes a supporting b'as'e frame for each magazine and on which the escapement bank and the magazine lifting mechanism for such magazine are mounted.

8. A combination according to claim 5, wherein the machine is provided with means movable from an inactive to an active position, wherein to support a removed or a replacement magazine and. arranged during such movement, to actuate the devices for operating the magazine lifting mechanisms.

9. A typographical machine including, in combination, a plurality of matrix magazines, a shift frame therefor comprising a plurality of base frames upon which the respective magazines are removably supported, escapement banks mounted upon the respective base frames in operative engagement with the magazines, mechanism in cluding a rock shaft carried by each base frame for lifting the corresponding magazine therefrom to disengage it from the escapement bank preparatory to its removal or replacement, a stub shaft common to all of the rock shafts and arranged to be coupled to any selected one thereof, and means for rotating the stub shaft to operate the magazine lifting mechanism corresponding to the rock shaft coupled thereto.

10. A typographical machine including, in combination, a plurality of matrix magazines, a shift frame therefor comprising a plurality of base frames upon which the respective magazines are removably supported, escapement banks mounted upon the respective base frames in operative engagement with the magazines, mechanism including a rock shaft carried by each base frame for lifting the corresponding magazine therefrom to disengage it from the escapement bank preparatory to its removal or replacement, a stub shaft common to all of the rock shafts and arranged to be coupled to any selected one thereof as the shift frame is moved to bring such rock shaft into axial alinement with the stub shaft, and means for rotating the stub shaft to operate the magazine lifting mechanism corresponding to the rock shaft coupled thereto.

11. A combination according to claim 9, Wherein the means for rotating the stub shaft includes a pivotally mounted arm arranged at the side of the machine.

12. A combination according to claim 9, where in the means for rotating the stub shaft includes at least one of the plurality of arms arranged to be swung from an inactive position to an active position at the front of the machine for the support of a magazine during removal or replacement.

13. A typographical machine including, in combination, a shift frame, a plurality of independently removable matrix magazines carried by said frame, a corresponding plurality of escapement banks mounted in the shift frame in operative engagement with the magazines, means carried by the shift frame in association with each magazine for lifting the individual magazines out of engagement with their corresponding escapement banks preparatory to removal or replacement, means for locking the matrices in each magazine, a common device mounted on a relatively fixed part of the machine for selectively operating the individual magazine lifting means,

and means for preventing the operation of said common de'vi'ce until the matrices have first been locked in the selected magazine.

14. A typographical machine including, in combination, a shift frame, a plurality of independently removable matrix magazines carried by said frame, a corresponding plurality of escapement banks mounted in the shift frame in operative engagement with the magazines, means carried by the shift frame in association with each magazine for lifting the individual magazines out of engagement with their corresponding escapement banks preparatory to removal or replacement, means for locking the matrices in each magazine, a common device mounted on a relatively fixed part of the machine for selectively operating the individual magazine lifting means, and means including a latch member associated with each magazine and adapted when the lifting mechanism of the selected magazine is connected for operation by the common device to prevent the operation thereof until the matrices have first been locked in such magazine.

15. A typographical machine including, in combination, a plurality of matrix magazines, a shift frame therefor comprising a plurality of base frames upon which the respective magazines are removably supported, escapement banks mounted upon the respective base frames in operative engagement with the magazines, mechanism including a rock shaft carried by each base frame for lifting the corresponding magazine therefrom to disengage it from the escapement bank preparatory to its removal or replacement, a stub shaft common to all of the rock shafts and arranged to be coupled to any selected one thereof, means for rotating the stub shaft to operate the magazine lifting mechanism corresponding to the rock shaft coupled thereto, and means for preventing the operation of the stub shaft until the matrices have first been locked in the magazine to be lifted.

16. A typographical machine including, in combination, a shift frame, a plurality of independently removable matrix magazines carried by said frame, a corresponding plurality of escapement banks mounted in the shift frame in operative engagement with the magazines, means carried by the shift frame in association with each magazine for lifting the individual magazines out of engagement with their corresponding escapement banks preparatory to removal or replacement, mechanism for separating the magazines to permit the operation of the magazine lifting means, a common device mounted on a relatively fixed part of the machine and arranged to be selectively coupled for operating the individual magazine lifting means, and means for preventing the operation of said device until the magazine next above the one to be lifted by the operation thereof has been separated from said magazine.

17. A typographical composing machine ineluding, in combination, a plurality of matrix magazines, a shift frame therefor comprising a plurality of base frames upon which the respective magazines are removab-ly supported, escapement banks mounted upon the respective base frames in operative engagement with the magazines, means carried by each base frame for lifting the corresponding magazine therefrom to disengage it from the escapement bank preparatory to its removal or replacement, mechanism for separating the base frames to permit the operation of the magazine lifting means, a common device mounted on a relatively fixed part of the machine and arranged to be selectively coupled for operating the individual magazine lifting means, and means including elements mounted on the base frames for preventing the operation of said device until the base frame next above the magazine to be lifted by the operation thereof has been separated from said magazine.

18. A combination according to claim 17, wherein the common device is operated by an arm pivotally mounted on the machine and wherein the means for preventing the operation thereof includes a pawl arranged to lock said arm against operation until the base frame next above the magazine to be lifted has been separated therefrom.

19. A typographical machine including, in combination, a matrix magazine, a base frame upon which the magazine is removably' supported, an escapement bank mounted upon the base frame in operative engagement with the magazine, mechanism carried by the base frame for lifting the magazine therefrom to disengage it from the escapement bank preparatory to its removal or replacement, means mounted on the machine frame for supporting the magazine during removal or replacement and including a pivotally mounted arm movable between inactive and active positions, and. means comprising a lost motion connection between the arm and the magazine lifting mechanism for operating said lifting mechanism to raise the magazine as the arm is moved to active position and to lower the magazine as the arm is moved to inactive position while permitting the arm in its inactive position to remain out of the way.

20. A combination according to claim 19, wherein there is provided auxiliary means associated with the lost motion connection positively to effect the lowering of the magazine as the lost motion in the connection is taken up during the return movement of the arm to inactive position. 20

RICHARD R. MEAD.

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