US2055663A - Typographical composing machine - Google Patents

Description

Sept.- 29, 1936. R. R. MEAD I TYPOGRAPHICAL COMPOSING MACHINE Filed Sept. 4, 1935 6 Sheets-Sheet l BY wm w p @m /M TTORNEYS R. R. MEAD 2,055,663

TYPOGRAPHICAL COMPOSING MACHINE Filed Sept. 4, 1955 6 Sheets-Sheet 2 Sept. 29, 1936.

Sept. 29, 1936. R, R D 2,055,663

TYPOGRAPHICAL COMPOSING MACHINE Filed Sept. 4, 1935 6 Sheets-Sheet s BY a 77/ ATTORNEYS Sept. 29, 1936'. R. R. ME AD TYPOGRAPHICAL COMPOSING MACHINE Filed Sept. 4, 1955 6 Sheets-Sheet 4 lzvVNrok I TTORNE Y5 Sept. 29, 1936. MEAD 2,055,663

TYPOGRAPHICAL COMPOSING MACHINE Filed Sept. 4, 1935 6 Sheets-Sheet 5 INVENTOR.

(:4, Ti, 1 W W 7/ ATTORNEYS Sept. 29, l936. R. R. MEAD TYPOGRAPHICAL CQMPOSING MACHINE Filed Sept. 4, 1955 6 Sheets-Sheet 6 n IIIIII INVENTOR TTORNEKf Patented Sept. 29, 1936 UNITED STATES PATENT OFFICE TYPOGRAPHICAL COMPOSING MACHINE Richard R. Mead, Queens Village, N. Y., assignor to Mergenthaler Linotype Company, a corporation of New York 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 the 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, the present improvements deal with devices for removing a matrix magazine from its base frame when it is desired to replace such magazine with one containing a different matrix font. In the present instance, the base frame is equipped with devices normally retracted within the frame but which are adapted, upon the removal of a magazine, to be extended to a position wherein they will support the magazine in a. vertical position in front of the machine clear of the frame, assembler throat, and other magazines should there be any. These magazine removal devices are confined to the limits of the base frame and are moved from retracted to extended position and returned automatically during the removal and replacement of the magazine, such movement throughout being entirely within the plane of the base frame.

The invention is particularly advantageous when used with machines employing a plurality of matrix magazines in bank, since in such cases it is unnecessary to touch or disturb any of the magazines other than that which it is desired to replace. Although the improvements have been illustrated in connection with a three magazine machine for the reasons just stated, it is apparent that they could be used with equal facility in machines employing a greater or a lesser number. It may also be added that the magazines shown herein are socalled main magazines although they could as well be auxiliary magazines.

Referring to the drawings:

Fig. 1 is a side elevation of a portion of a typographical composing machine equipped with the present improvements;

Fig. 2 is a plan view of the portion of the machine shown in Fig. 1, with the magazine removal device in its extended or active position;

Fig. 3 is a front view of the portion of the machine shown in Fig. 1, with some of the parts removed to show the construction of the magazine removal device;

Fig. 4 is a side elevation of a portion of a typographical composing machine equipped with another embodiment of the present invention, and showing the magazine removal device in its extended position;

Fig. 5 is a top view of the parts shown in Fig. 4, with the magazine in place and partly broken away to show the magazine removal device in retracted position, the device in its extended position being shown in broken lines;

Fig. 6 is a front view of the parts shown in Fig. 5;

Fig. '7 is a side elevation of a portion of a typographical composing machine, showing a third embodiment of the present invention and with the magazine removal device in its extended position supporting a magazine at the front of the machine;

Fig. 8 is a top view of a portion of the machine H shown in Fig. '7, but with the magazine in place and partly broken away to show the magazine removal device in its retracted position, the extended and an intermediate position of the device being illustrated in broken and dotted lines respectively; and

Fig. 9 is a vertical section on line 9-9 of Fig. 8.

In the different embodiments, the matrices are stored according to font or otherwise in the magazines A, three of which are shown, but of which a greater or lesser number might be employed if desired. The several magazines are removably mounted upon separate base frames B, as by means of lips or shoulders B rising from the forward or lower ends of the base frames and engaging in front of cross ribs or plates A attached to the undersides of the magazines. The three base frames B are all connected by means of screws B to a pair of side plates C, these parts thus constituting a rigid shift frame for the magazines. The shift frame is in turn mounted in a relatively fixed supporting frame D pivoted at its upper end (see Fig. 7) as at D to the machine frame and resting loosely at its lower end upon adjustingscrews (not shown) carried by the machine frame.

It may be stated here that themagazines here in shown are of the short variety and, for this reason there is employed in connectionwith the magazines, a channeled y.conductor E which serves to connect the active one thereof with the customary magazine entrance F leading from the distributing mechanism G. 'As will be noted from Fig. 7, both the magazine entrance F and Cil the channeled conductor E are mounted directly on the supporting frame.

In the embodiments illustrated, the magazines are each provided with a fixed bank of escapements H adapted to be actuated in the usual way from the main keyboard but, as these parts are well known and form no part of the present invention, any further description would be superfluous. If desired, reference may be had to the Kennedy Patent No. 1,561,244 for fuller information with respect to the keyboard connections. An assembler entrance I is arranged to receive the matrices as they are released from the magazines and carry them to the composing or assembling mechanism.

In selecting one or another of the magazines for use, the shift frame C is raised and lowered Within the fixed supporting frame D to bring the selected magazine into registration with the assembler entrance I at the front and the channeled conductor E at the back.

The mechanism for raising and lowering the magazine shift frame (see Figs. 1, 4 and 7) consists in part of a pair of cams J (only one of which is shown) arranged at opposite sides of the machine and mounted on a shaft J extending horizontally beneath the magazines and journalled at its opposite ends in the supporting frame D. As the cams J are rotated, they cooperate with a corresponding pair of rollers J carried by the shift frame C to raise or lower the latter into a position wherein the selected magazine will be operative, the shift frame during the adjustment just mentioned being guided by anti-friction rollers J with which the sup porting frame D is equipped.

When it is desired to remove or replace a mag azine, the entire supporting f ame D is rocked about its pivot D to raise the magazines to a position wherein the one selected for removal will clear the assembler entrance I.

The mechanism for raising the supporting frame D includes a toggle device consisting of a pair of pivotally connected members K and K the member K being rotatably connected to the cross shaft J and the member K fastened to a rock shaft K journalled in the main frame of the machine, the arrangement being such that, as the rock shaft i is turned to straighten out the toggle members, the supporting frame D will be raised to its uppermost position wherein the removal of the magazines can be effected. The rock shaft K is operated by a crank handle K arranged at the side of the machine through two arms K and K and an interconnecting link K the arm K being fixed to the crank handle, and the arm K fixed to the rock shaft K and the intermediate link K being pivotally connected at its opposite ends to said arms. If desired, the pivotally mounted supporting frame D may be counter-balanced by a tension spring D (Fig. 7) anchored at one end to the machine frame or a bracket carried thereby, and connected at its opposite end to the rear arm of a lever D pivotally mounted adjacent its center, and having a front arm provided with an anti-friction roller D bearing against the frame D at the bottom.

The parts, as thus far described, are known constitute no part of the present improvements. For a more detailed description thereof, reference may be had to the Burt Patent No. 1,864,799.

In order to remove a magazine from a machine equipped with the improvements illustrated in Figs. 1, 2 and 3, the magazine supporting frame D is first raised to position the magazine selected for removal above or clear of the assembler entrance I. The supporting frame D in its raised position is illustrated in Fig. 1, and there it will be observed that the topmost magazine (which, for the setting of the cam J as shown, would in its normal position register with the assembler entrance I) has been elevated to clear the assembler entrance, so that the magazine may readily be removed in a forward direction. The magazine is then lifted slightly until the cross rib A clears the shoulders B on the associated base frame B, whereupon the magazine may be slid forwardly in its own plane until another cross rib A fixed to the underside of the magazine and rearwardly of the center of gravity thereof. engages a cross piece L secured at the front end of a pair of telescoping slides L L carried by the base frame B. As the magazine is drawn forwardly, the slides L and L will be extended as shown in Fig. 2, and, as the magazine leaves its base frame B, it thereafter will receive its sole support from the slides which, when fully extended, will position the cross piece L so that the magazine supported thereby can be swung into a vertical position (see Fig. 1) clear of the assembler entrance I and likewise clear of the remaining magazines in the bank (this whether the magazine be the top one or a lower one).

In its vertical position, the magazine A. is held on the cross piece by a pair of brackets A riveted at their centers to the cross rib A and at their rear ends to a similar cross rib A likewise fastened to the underside of the magazine at the rear edge thereof. The brackets A (which in the retracted position of the slides are housed in recesses B formed in the supporting frame B) have forwardly extending portions that pass under the cross piece L as the magazine is drawn from its base frame. The brackets A are spaced apart so as to engage the cross piece L at its ends I which are partly cut away for clearance, and rounded off to facilitate rotating the magazine to its vertical position. The rounded portions extend inwardly from the outer ends of the cross piece and terminate at the body portion proper of the slide L and also project somewhat above the upper face of the slide to present abutments against which the cross rib A on the magazine engages to effect the extension 01. the slides as previously described.

When the magazine is hanging on the cross piece L in its vertical position, it is a simple matter to remove it and substitute another magazine for replacement in the machine.

The top telescoping slide member L (see Figs. 1 and 2) is slidably arranged in the bottom slide member L which in turn is slidably arranged in the base frame B at the center thereof. The top slide L at its lateral edges, is secured to the bottom slide L by tongue and groove connections L and the bottom slide L at its. lateral edges, is likewise secured in the base frame by similar tongue and groove connections L the grooves in the base frame being formed in part by a pair of plates L screwed to the frame and which overlie the tongue portions formed on the bottom slide. The slide L is formed in its upper face with a fore-and-aft recess L centrally located and arranged to receive a rib A attached at the underside of the magazine to the cross ribs A A and A for guiding the magazine in its movement with respect to the slide; and directly beneath said recess, the slide is further formed in its bottom face With a boss L to satisfy strength requirements and which seats in a complementary recess L formed in the upper face of the slide L The slide L and the base frame B are respectively formed with a similar boss L and recess B for the same purpose.

The fore-and-aft movement of the top slide L with respect to the bottom slide L and of the bottom slide with respect to the frame B is limited by two sets of gibs Z and Z the set Z being fastened to the bottom slide L and extending into a pair of recesses 1 formed in the opposite edges of the slide L and terminating short of the ends thereof so as to present shoulders which bank against the gibs, and the other set I being fastened to the plates L on the base frame and extending into a similar pair of recesses Z formed in the opposite edges of the bottom slide L and which likewise terminate short of the ends of the slide L to present shoulders cooperating with the gibs Z for the same purpose.

It might be stated here that the portion of the base frame presenting the bearing surface for the bottom slide L is formed in two parts, the rear part being integral with the frame proper and the front part being constituted by a plate B secured to the frame at the bottom in recesses provided for the purpose and extending beyond the front edge of the frame so as to give additional support to the sliding members L and L In order to replace a magazine, it is first hung upon the cross piece L by means of the brackets A and thereafter tilted about the cross piece into the plane of its base frame. The magazine is then pushed rearwardly until the cross piece A thereon seats behind the shoulders B formed on the base frame.

During the rearward movement of the magazine, the cross piece L remains in its magazine supporting position until the magazine at its rear edge rests upon the base frame, whereupon a pair of angular-shaped brackets A secured to a cross rib A on the underside of the magazine, will engage the cross piece L and cause the retraction of the slides L and L within the base frame as the magazine is pushed home to its proper position on the base frame. When the magazine is in its proper position, the angular-shaped brackets A just referred to, project into recess-es B formed in the bottom face of the plate B such recesses having sufficient depth to provide the necessary clearance for the brackets when the magazine is raised to clear the shoulders 13 at the front of the supporting frame.

The telescoping slides L and L are held yield ingly in normal position within the base frame B by two pairs of leaf springs Z and Z the pair 1 being screwed to the base frame and adapted to engage in notches Z formed at the front edge of the bottom slide member L and the other pair Z being screwed to the bottom slide member and adapted to engage in notches Z formed in the bottom face of the top slide member L (see Figs. 1 and 2). It will be noted that both the base frame and the bottom slide member, directly beneath the leaf springs, are recessed as at Z so as to provide clearance for the latter during the forward and return movement of the slides.

In the second embodiment illustrated in Figs. 4 to 6, the devices for supporting the magazine in its forward vertical position, instead of being telescopic, comprise a pair of angular-shaped pivoted member M M movable in the plane of the base frame B.

The members M, M are pivoted one at each side of the base frame on hinge lugs M formed as an integral part of the end sections, as well as the main body portion of the frame, the lugs being somewhat thicker than the body portion in order to provide the necessary strength. The members M and M are formed with short rear arms m which bear against the underside of the base frame, and longer front arms m which extend inwardly and cross each other at the center of the base frame, the arm of the left-hand mem ber M being offset so as to clear the corresponding arm of the right-hand member M The bearing surface presented by the frame and the large hinge lugs to the members M and M is further augmented by plates m riveted one to each of the arms m adjacent the hinge lugs and which have portions bearing on the top face of said lugs, segmental portions of which are cut away to provide clearance. The arms m are further provided at their front extremities with members m riveted to the arms and which present upstanding lugs m terminating just below the underside of the matrix magazine.

Now in order to remove a magazine from the base frame, it is first raised slightly to permit the cross rib A on the underside thereof to clear the shoulders B on the base frame, whereupon the magazine may slide forwardly as in the embodiment previously described. As it does so and prior to the time that it leaves the base frame, a pair of plates A fastened to a cross rib A on the magazine will engage the lugs m and cause the members M and M to swing in the plane of the base frame from the position shown by the solid lines in Fig. 5 to the position shown by the broken lines therein, in which latter position the magazine will be supported solely by said members. In the extended position of the members M and M the magazine (even though it be a lower one) will clear the other magazines in the bank and can be rotated into the vertical position shown in Fig. 4, where it is sustained by the engagement of the plates A with the lugs m. In this position, the magazine may be readily removed and a different one substituted therefor.

The extended positions of the members M and M are determined by a pin m which passes through slots m formed in said members and having sufiicient length to permit free movement of the members M and M between their retracted and extended positions. Furthermore, the pin m is provided at its opposite ends with heads m that engage the top and bottom faces of the members M and M respectively and serve to hold them together so as to act as a unit in supporting the magazine. In the retracted position of the supporting members, the pin will rest rearwardly of the front edge of the base frame, the center rib of which is recessed as at m to give the necessary clearance (see Fig. 5).

It may be noted that the plates A project for a short distance forwardly of the cross rib A and, due to the thickness of the latter, the extended portions will be spaced somewhat from the un derside of the magazine, thereb permitting the lugs m on the arms m to engage behind the plates so as securely to support the magazine when in its vertical position. Furthermore, the plates A are of suiiicient length to insure engagement with the lugs m throughout the movement of the arms m from their normal retracted position to their fully extended position.

In order to replace a magazine on the base frame, it is first placed in a vertical position on the members M and M then tilted into the plane of the base frame, and thereafter pushed rear- (iii wardly, the members remaining in their extended position until after the rear edge of the magazine has passed beyond the front edge of the frame for a short distance, whereupon another cross rib A secured at the underside of the magazine will engage the lugs m on the members and swing them back to their normal retracted positions within the frame.

The magazine is guided in its movement on the base frame by a fore-and-aft bar A (Figs. 5 and 6) riveted to the magazine cross ribs and which slides in a guid'eway formed in the center rib of the base frame.

The third embodiment illustrated in Figs. '7, 8 and 9 is similar to that shown in Figs. 4, 5 and 6, in that there are provided two members N and N pivotally mounted adjacent the lateral edges of the base frame and movable in the plane thereof from a retracted position within the frame to an extended position out of the frame where the magazine is supported in a vertical position clear of the assembler throat and the other magazines in the bank. In this instance, however, the members N and N are formed with arm portions n and n meeting at the center of the base frame when the members are in their normal or retracted positions, and are also formed at their inner ends with arcuate portions n and 11. extending to the rear edge of the base frame and provided in their adjacent edges with complementary gear teeth 11 which cause the members N and N to move in unison. The members N and N have a bearing on the body portion proper of the base frame, winch for this purpose is formed with arcuate ribs B corresponding to the arcuate portions 11 n of the members, and said members are held slidably against the bearing surfaces by anti-friction rollers 11 mounted on pins n fixed in the base of the frame, the rollers seating in recesses n formed in the edges of the arcuate portions 11 n opposite the edges that present the teeth (Figs. 8 and 9).

When the members N and N are in their retracted position, the rear edges of the arm portions 11., n thereof bank against the rollers n whereas when they are in their extended position, lugs 11, formed at the outer ends of the arcuate portions 12 and n bank against the pins 11 it being in this manner that the retracted and extended positions of the members are determined.

The magazine on its underside and at the rear edge is provided with a cross rib A extending the full width of the magazine, and at a short distance forward of said rib there is also provided another cross rib A to which latter there are secured two plates A presenting overhanging portions for a purpose presently to be described. The magazine further is equipped with a center bar A fastened to both cross pieces A and A and extending toward the front of the magazine somewhat beyond the front edge of plates A just alluded to.

In order to remove a magazine from the base frame, it is lifted to clear the shoulders B formed thereon, as in the embodiments previously described, and allowed to slide forwardly, and short ly after it starts its forward movement, the center bar A at its front end will engage a pair of shoulders 11 formed one on each of the arcuate portions n and n in the edges thereof that carry the teeth. As the magazine continues in its movement, said center bar will rotate the members N and N from the position shown by the solid lines in Fig. 8 to that shown by the dotted lines therein, which is just about half the full range of their movement. The magazine will now move a small distance by itself, but shortly thereafter the plates A will engage a pair of lugs 11. formed one at each of the inner ends of the straight arm portions n, n of the members N and N and, as the magazine continues to move forwardly, said plates will effect the movement of said members to the position shown by the broken lines in Fig. 8. In this final position, the members are fully extended and the magazine can be .Swung to a vertical position in front of the assembler throat, the lugs 12 engaging behind the plates A to hold the magazine suspended. With the magazine suspended in this manner, it is a simple matter to remove it and replace it by another containing a different font.

In order to replace a magazine on the base frame, it is first suspended in a vertical position on the members N and N then tilted into the plane of the base frame, and thereafter pushed rearwardly, the members remaining in their extended position until after the rear edge of the magazine has passed beyond the front edge of the supporting frame, whereupon the cross rib A on the underside of the magazine will engage the lugs n and return the members to their normal retracted position within the base frame. Since the lugs n in the retracted position of the members N and N stand to the rear of the shoulders E the cross rib A in this instance is made wider in its center region in order that the members will have been returned fully to their normal position when the cross rib A engages behind the shoulders B on the base frame.

It may be stated that the shoulders 72*, against which the center bar A banks to eifect the first part of the extending movement of the members N and N are presented at the front ends of a pair of recesses n formed in the opposed edges of the arcuate portions 11 and n just above the teeth a and which are present to provide clearance for the center bar during its movement.

It will be noted, as to each of the three different embodiments shown .and described, that the operation of the magazine removal devices is entirely automatic, the operator in removing a magazine from its base frame proceeding as if the removal devices were not present. Thus, in removing a magazine, the operator grasps the magazine at its lower end and, after disengaging it from the stop shoulders on the base frame, slides it straight forwardly along the base frame. just as he does in existing machines, paying no attention whatever to the magazine removal devices Which, as a matter of fact, are inaccessible and entirely concealed from view. The first or initial movement of the magazine is entirely free and of considerable extent, but thereafter the magazine picks up the removal devices and pulls them out of the frame to their extended position, the magazine being supported by the base frame throughout its whole sliding movement until just near the end of such movement, when the rear end of the magazine passes beyond the lower or forward end of the base frame; at this time, the removal devices have assumed their fully extended position and no further sliding movement of the magazine is permitted, so that the magazine is then allowed to assume its vertical position in front of the assembled entrance where it can be handled with ease. Similarly, in replacing the magazine upon the base frame, the magazine is first tilted from its vertical position back into its normal inclined position .and then slid straight-rearwardly until it assumes its proper position on the base frame. Here again, the first or initial part of this rearward movement of the magazine is free or relative to the magazine removal devices, these devices being picked up by the magazine in its continued rearward movement and restored to their normal or retracted position within the base frame by the final part of such movement. This differential movement of the magazine and its removal devices aids in keeping these devices confined wholly within the limits of the base frame, which is an important feature and especially in a movable multiple magazine machine, such as shown, wherein the base frames must be moved upwardly and downwardly with reference to contiguous parts to bring any selected magazine into operative position. In this connection, it will be understood of course that, in each of the embodiments illustrated, all the base frames will be equipped with magazine removal devices, the description given applying to them all and not being limited to one frame only.

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. In a typographical composing machine, the combination of a supporting frame, a removable matrix magazine supported thereon, and magazine removal means arranged normally within the confines of the supporting fram and movable in the plane of the frame into a magazine supporting position outside the confines of the frame.

2. A machine according to claim 1, wherein the magazine is provided with devices for actuating the magazine removal means during its removal,

3. In a typographical composing machine, the combination of a supporting frame, a removable magazine supported thereon, magazine removal means arranged normally within the confines of the supporting frame and adapted as the magazine is removed to be moved in the plane of the frame into a magazine supporting position outside the confines of the frame, and devices for restoring said means to normal position upon the replacement of a magazine.

4. In a typographical composing machine, the combination of a supporting frame, a removable magazine supported thereon, means mounted Within the frame and positionable during the removal of the magazine to support the latter clear of the frame, and devices attached to the magazine and cooperating with said means to permit the magazine during removal to be supported by said means in a vertical position.

5. A typographical composing machine according to claim 4, wherein the magazine is further provided with other devices for restoring said means to normal position upon the replacement of the magazine.

6. A typographical composing machine according to claim 4, wherein the means referred to are confined within the limits of the magazine supporting frame when in normal position.

'7. In a typographical composing machine, the combination of a supporting frame, a removable matrix magazine supported thereon, means arranged normally within the confines of the supporting frame and adapted to be actuated during the removal of the magazine into position for supporting the magazine clear of the frame, said means including devices about which the magazine may be turned to vertical position, and means on the magazine for engaging said devices to hold the magazine detachably on the supporting means when thus vertically positioned.

8. A combination according to claim '7, where in the magazine is also provided with devices for returning the supporting means to normal position as the magazine is replaced.

9. In a typographical composing machine, the combination of a supporting frame, a matrix magazine supported thereon and removable therefrom by an endwise movement with respect thereto, and means movable in the plane of the frame for supporting the magazine clear of the frame, said means permitting a free initial movement of the magazine during removal and then being actuated to magazine supporting position by the continued movement of the magazine.

10. A combination according to claim 9, wherein the supporting means are returned to normal position automatically upon the replacement of a magazine.

11. In a typographical composing machine, the combination of a supporting frame, a removable magazine supported thereon, and means mounted in the frame and actuated automatically during the removal of the magazine into a position for supporting the magazine clear of the frame.

12. In a typographical composing machine, the combination of a supporting frame, a removable magazine supported thereon, means mounted in the frame and movable in the plane thereof for supporting the magazine during removal, and devices operable as the magazine is removed for automatically actuating said means from an inactive position within the frame to an active position out of the frame.

13. In a typographical composing machine, the combination of a supporting frame, telescoping devices mounted in said frame and movable in the plane thereof, a removable matrix magazine supported on said frame independently of the telescoping devices, and means operable during the removal of the magazine tomove said telescoping devices into their extended position for supporting the magazine clear of the frame.

14. A combination according to claim 11, wherein the telescoping devices include a transverse member, and wherein the magazine is equipped with means cooperating with said member to effect the positioning of said devices and to support the magazine vertically on the transverse member when the magazine is clear of the frame.

15. A combination according to claim 11, wherein resilient means are provided for releasably holding the telescoping devices in normal position within the magazine supporting frame.

16. In a typographical composing machine, the combination of a supporting frame, a removable magazine supported thereon, and a pair of magazine supporting armspivotally mounted in the frame, one at each side thereof, and movable in the plane thereof from an inactive position within the frame to an active position out of the frame.

17. A combination according to claim 16, wherein means are provided for effecting the simultaneous movement of the pivoted arms.

18. A combination according to claim 16, wherein the magazine is provided with means for automatically moving the pivoted arms from inactive to active position as the magazine is removed from the frame.

19. A combination according to claim 16, wherein the magazine is provided with means both for moving the pivoted arms to active position out of the frame as the magazine is removed and for returning the pivoted arms to inactive position within the frame as the magazine is replaced.

20. A combination according to claim 16, wherein the pivoted arms are geared together to eifect simultaneous movement thereof.

RICHARD R. MEAD.

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