US2504745A - Typographical machine having holding means for character viewing - Google Patents

Description

Aprll 18, 1950 F. STADELMANN 2,504,745

, TYPOGRAPHICAL MACHINE HAVING HOLDING MEANS FOR CHARACTER VIEWING Filed March 11, 1949 7 Sheets-Sheet 1 INVENTOR F RlTZ STADELMANN ATTORNEY April 18, 1950 F. STADELMANN 2,504,745

TYPOGRAPHICAL MACHINE HAVING HOLDING MEANS FOR CHARACTER VIEWING Filed March 11, 1949 7 Sheets-Sheet 2 INVENTOR FRITZ STADELMANN I m L ATTORNEY April 18, 1950 F. STADELMANN TYPOGRAPHICAL MACHINE HAVING HOLDING MEANS FOR CHARACTER VIEWING 7 Sheets-Sheet 3 Filed'March 11, 1949 INVENTOR FRITZ STADELMANN ATTORNEY April 18, 1950 F. STADELMANN 2,504,745

TYPOGRAPHICAL MACHINE HAVING HOLDING MEANS FOR CHARACTER VIEWING Filed March 11, 1949 7 Sheets-Sheet 4 iLw ' |NVENTQR FRITZ sTADELMANN ATTORNEY April 18, 1956 F. STADELMANN 2,504,745

TYPOGRAPHICAL MACHINE HAVING HOLDING MEANS FOR CHARACTER VIEWING Filed March 11, 1949 '7 Sheets-Sheet 5 FRITZ STADELMANN ATTORNEY '7 Sheets-Sheet 6 INVENTOR FRITZ STADELMANN ATTORNEY AL MACHINE HAVING HOLDING MEANS FOR CHARACTER VIEWING a mu 55-57 F. STADELMANN TYPOGRAPHIC Fl g April 18, 1950 Filed March 11, 1949 April 18, 1950 F. STADELMANN 2,504,745

' TYPOGRAPHICAL MACHINE HAVING HOLDING MEANS FOR CHARACTER VIEWING Filed March 11, 1949 7 Sheets-Sheet 7 INVENTOR FRITZ STADELMANN BY I ATTO R N EY Patented Apr. 18, 1956 TYPOGRAPHICAL MACHINE HAVING HbLD ING MEANS FOR CHARACTER VIEWING Fritz Stadelmann, Valley Stream, N. Y., assignor to Intel-type Corporation, Brooklyn, N. Y., corporation of New York Application March 11, 1949, Serial No. 80,873

25 Claims. 1

This invention relates to improvements in typographical line-composing machines of the general organization disclosed in U. S. Patent No. 436,532, and more particularly to improvements especially useful with machines of this class when constructed and arranged to produce lines of type matter photographically on sensitized film or paper instead of casting lines of type on the familiar metal type-bearing slugs. Examples of such machines are disclosed in U. S. Patents Nos. 2,395,659, 2,391,021 and 2,042,041, wherein the lines of type matter are produced on sensitized film or paper from composed lines of character-bearing elements or matrices provided each with a photographically reproducible type character, the elements being designed for circulation, in response to various organs which function to move them and to start and stop the machine during each cycle of operation thereof, from a storage station through linecomposing, photographing and discharging stations to a distributing station from which they are returned to the storage station.

More specifically, the present invention is directed to the provision of means for identifying the last line that was reproduced from a previously composed line of elements, thus to furnish the operator with a positive and reliable indication of the proper starting place on his copy sheet in the event that for one or another reason composition at the keyboard may have been unduly delayed or interrupted.

As well understood by those familiar with commercial typographical machines of the type-slug casting variety, the usual practice for identifying the content of the last reproduced line is to visually inspect the type characters cast on the last slug ejected onto the galley. However, should the last ejected slug have been carried away, through the usual periodic collection of galleys from different machines during the course of a day, this facility is lost. More importantly, however, is the fact that when lines are produced photographically as images on sensitized film or paper contained within a light-tight holder, or are produced in any manner such as to preclude visual inspection, no means at all is afforded the operator for identifying the content of the last line produced once the elements or matrices used to produce it have been distributed back to the storage station on the machine.

An object of the invention is to provide in a typographical machine, means operative to cause a used line of character-bearing elements or matrices after their characters have been reproduced, to be presented and held at a station intermediate of the reproducing and distributing stations on the machine and at which intermediate station either the characters or suitable reference letters provided on the elements and indicative of the characters borne thereby are visible to the operator for reading and identification purposes.

Another object is to provide control means for causing a used line of character-bearing elements or matrices to be presented and held at a line-reading station intermediate of the character reproducing and distributing stations only in the event that manipulation of the keyboard to compose a succeeding line of elements does not take place at all or is unduly interrupted or delayed.

Still another object is to provide means whereby whenever a used" line of characterbearing elements or matrices is presented and held at the line-reading station, as herein provided, it will be released for transport from such station to the element distributing station of the machine upon resumption of composition at the keyboard.

According to the preferred embodiment of the invention the foregoing objectives are attained by introducing on the line-delivery cam (well known in respect to commercial typographical machines) an additional stopping pawl, and by providing control means for rendering such pawl operative automatically to permit or prevent stopping of the main cam shaft of the machine at a point in its cycle of rotation appropriate to presentation of a used line of elements at the desired line-reading station.

Specifically, the newly introduced stopping pawl is so located that when rendered active by its control means it will operate to effect disengagement of the driving clutch for the main cam shaft just after the familiar second or distributing elevator, under control of its operating cam, leaves its element receiving position-the position where the elements or matrices are discharged onto the elevator bar after leaving the character reproducing or photographing station, for subsequent transport by the elevator to the element distributing station.

The arrangement is such that when the cam shaft stops in response to the newly added pawl the used line of elements is presented and held by the second elevator at such level above the usual transfer channel, Where it seats to receive the discharged elements, that reference letters preferably provided on the front edges of the elements are exposed to the view of the operator who may readily read them and thus identify the content of the last line that was produced prior to a prolonged delay or interruption in his composition at the keyboard.

So long as composition of the next line to be produced gets under way before the new stopping pawl of the invention arrives at its clutch disengaging position there is no practical need, of course, for identification by the operator of the last line that was reproduced, the characters or reference letters on elements already introduced into the next composed line being sufficient for identification purposes. Accordingly, the invention provides control means including devices operatively associated with the usual word-space finger keys of the keyboard and operative automatically to render the additional stopping pawl of the invention inactive so long as at least the first word-space element has been introduced into the next line being composed. However, should no following line be composed, or if one is started but the stopping pawl arrives at its clutch disengaging position before a word-space element is introduced into such line, the invention provides that the aforesaid control devices operate to render the pawl active to stop the cam shaft and arrest the second elevator with the preceding used line of elements presented at the proposed line-reading" station. And in the event that the cam shaft is thus stopped by the newly added pawl, the invention provides that the control devices operate to effect release of the pawl the first time a Word-space key is struck to introduce a word-space element into the next composed line. Such release of the pawl upon resumption of composition at the keyboard results in rotation of the main cam shaft from the interrupted line-reading point in its cycle to the usual end point of the cycle, and during this period of rotation of the shaft the second elevator cam operates to swing the elevator upwardly in well known manner to transport the used line of elements to the distributing mechanism which operates to return the elements to their storage magazine.

Thus, the invention involves, essentially, the provision of mechanism by which a cycle of operation of a typographical machine of the kind having an elevator or equivalent transporting means for receiving character-bearing elements after their use in producing a line of type matter may be controlled, either to impart to said elevator a full upward swing to transport the elements from the element receiving position to an element distributing station, or to cause the elevator to partake of only a partial rise from its element receiving position and then stop, thus to present and hold a used line of elements accumulated thereon at an intermediate station where the characters or identifying reference letters on the elements may be read by the operator.

The mechanism provided by the invention to effect such alternative control of the movements of the element transporting elevator will be described hereinafter in detail in connection with the accompanying drawings, in which:

Figure 1 is a front elevation showiing a portion of a typographical photo-composing machine and showing the second elevator arrested at a position where reference letters on the character-bearing elements of a used line thereof are visible and readable.

Figure 1a is an enlarged fragmentary view of the left hand end of the second elevator arrested at the position shown in Figure 1, and shows the readable reference letters on the front edges of the elements or matrices accumulated on the elevator, in reverse reading order, after being used to produce a line of type matter.

Figure 1b is a perspective view of a photographable character-bearing element such as employed in the machine of Figure 1.

Figure 2 is a plan view showing the main cam shaft and associated parts as provided on the machine of Figure 1.

Figure 3 is a side elevation in section on the line 3-3 of Figure 2, the parts being shown in the positions they occupy when the clutch is disengaged and the cam shaft is at rest.

Figure 3a is a fragmentary view showing the vertical cooperative clutch operating levers as seen in Figure 3 in the position they assume when the clutch is engaged and the cam shaft is rotating.

Figure 4 is an enlarged fragmentary elevation, viewed from the rear of the machine, showing the vertical clutch operating levers and the solenoid relay provided for tripping stopping pawls on the cam shaft which cooperate with these levers to effect engagement and disengagement of the clutch, a pawl being shown in section in active position to hold the levers in clutch disengaging position.

Figure 4a is a fragmentary view showing the manner in which a pawl is deflected and caused to by-pass the clutch operating levers shown in Figure 4 when the pawl tripping relay is energized prior to arrival of the pawl at clutch disengaging position.

Figure 5 is a circuit diagram including the clutch operating levers and the pawl tripping relay as well as switches and parts associated with the keyboard which control the opening and closing of the relay circuit and in turn the action of the pawl of the invention by which a line of elements or matrices is presented at a linereading station.

Figure 6 is a fragmentary and partly diagrammatic side elevation showing the second elevator, the cam shaft and associated switches in their relative positions when the machine is idle, after a complete cycle of operation.

Figure 7 is similar to Figure 6 but shows the parts in their relative positions after the cam shaft has turned about degrees and has been stopped while the characters of a line of elements are being reproduced.

Figure 8 is similar to Figures 6 and '7 but shows the parts in their relative positions after the cam shaft has turned about '115 degrees from the stopping position indicated in Figure '7 and has been stopped to present a line of elements at the line-reading station of the invention.

Figure 9 is an enlarged fragmentary front elevation of the right hand side of the machine in Figure 1, certain parts being removed to show in detail the arrangement according to the invention of control devices associated with the wordspace keys of the keyboard for enabling a line of elements or matrices to be presented at the linereading station or to by-pass such station.

Figure 10 is a detail sectional view taken on the line Illa-H) of Figure 9.

Figure 11 is a fragmentary front view of the parts of the control devices shown in Figure 9 which are actuated by the word-space keys of the keyboard, the parts including a switch which is closed when a word-space key is struck.

Figure 12 is similar to Figure 11, but shows the switch as it remains closed after a word-space key is struck.

Figure 13 is similar to Figures 1'1 and 12 but shows the switch opened by the assembling elevator or'line assembler upon sending-in a composed line of elements.

Before proceeding to a description of the improvements according to the invention it will be helpful to briefly review (a) the actions involved in a cycle of operation of a photo-composing machine'according to Patent No. 2,395,659, the invention being herein shown, by way of example, as applied to such a machine, and (b) the parts and actions involved in starting and stopping the main cam shaft of the machine alluded to, such parts being similar to those long used in commercial line composing and type-slug casting machines.

The actions and mode of operation of the machine illustrated in Fig. 1 are the same as ex plained in Patent No. 2,395,659. Thus, character-bearing elements or matrices M', Fig. 1b having a photographable character imbedded in the flat side thereof, are released from the familiar storage magazine. A by manipulation of the keyboard B and led in orderly sequence into the usual line assembler C at the line-composing station M-l. The composed line of elements is sent-in by raising the assembler C to the delivery station M2 in front of the line follower or delivery finger D, the latter being linked in known manner to the line delivery lever E which is constantly urged to move leftward by a spring F but isheld in the position shown in Fig. 1 by engagement of the latch G with the finger D, see Fig. 9. When the assembler C is raised it trips the latch G, whereupon the released lever E and finger D shift the line of elements leftward to the justifying station M3. Here the finger measure stops H and J, the latter stop having a spring-pressed catch K which is rocked by an arm D! of the finger D and then snaps down over. this arm to lock the finger to the stop. The catch K when rocked actuates the pendant switch bar L whereby to momentarily close the switch X which is in circuit with another switch and a starting relay (as later explained) adapted to effect starting of the, main cam shaft of the machine. Line measuring and justifying devices, including the stop H, the pivoted rail N and cooperative parts on the finger D, are then operated by levers responding to cams P and Q on the cam shaft, see Fig. 2. As a final action the stop H is lowered to release the locked together stop J and finger D for leftward movement by the.

spring-urged delivery lever E, whereupon the main cam shaft, having turned about 150 degrees to effect the foregoing actions, is stopped.

' The line of elements at the position M-3 is new pressed leftward against the. wall of a vertical feed channel provided between the upright plates E, El. Projecting into this channel are the free ends of spring-pressed pick-up pawls pivoted at spacedintervals on a. vertically reciprocating feed. bar (not shown) actuated by the drum cam S which is driven independently of the main cam shaft of the machine.

At'each reciprocationof the feed-bar the pickup pawls thereon engage'and remove the elements individually and successively from the head of the line and move each element first to the photographing station on the optical axis 0- 0 for exposure, then to an intermediate station andfinally to a dischargingstation at the- D simultaneously encounters the line top of the feed channel. Here a laterally recip rocating pusher T operates to discharge each arriving element onto the ribbed bar U of the familiar second elevator. After each removal of an element the remaining line of elements is advanced leftward by the finger D an amount equal to or proportionate to the edgewise thickness of the removed element. The amount of each such advance is transmitted to the film holder V, to properly space the successive exposures, through gearing W between the vertical rack VI (secured to the holder V) and the horizontal rack V2 along which the stop J is initially set and clamped at a selected line measure position, such position corresponding to the initial setting of the stop H.

After the last element removed from the line is photographed and discharged onto the elevator bar U, a delay-action switch Y (Fig. 5) is automatically closed, this switch being in circuit with another switch and the starting relay (as later explained) adapted to effect starting of the main cam shaft. The shaft now turns through the remaining portion of its cycle, about 210 degrees, and during this time various parts including the film holder V and the delivery lever E and finger D are returned to their normal or starting positions shown in Fig. 1. Also, the second or distributing elevator is moved under control of its operating cam on the cam shaft, to transport the used line of elements to the distributing station on the machine.

To review the well known parts and actions involved in starting and stopping the main cam shaft of the machine attention is directed to Figs. 2, 3 and 5. Thus, the cam shaft i is driven in response to engagement of the familiar clutch located within the flange of the pulley 2 which is constantly driven by the motor 3. The pulley 2 is coupled and uncoupled in. respect to the clutch by the shifting endwise, by the pivoted forked lever 4, of a flanged collar do on a hollow sleeve 4b surrounding the clutch rod 5. A pinion- (not shown) on the sleeve 4?)- meshes with the large gear wheel E5 on the cam shaft to drive the latter. The forked lever 4 is rocked to clutch disengaging position by the action of radially ar ranged spring-pressed pawls pivoted on the usual line-delivery cam l and operative on the lever 4- through the familiar cooperative clutch operating levers 8 and 9, the latter beingpivoted in the fixed upright shaft lilo about which the usual hollow and vertically slotted vertical lever It) can turn to a limited extent in opposition to a spring not shown.

Whenever one of the aforesaid pawls, during rotation of the cam 'l, encounters and lodges on the ledge 8aof' the lever 8' it rocks the levers 8 and 9 in opposite directions to the positions shown in Fig. 3. Here the depending arm of the lever 9 holds the forked lever A in clutch disengaging position in opposition to the usual clutch spring 5a, Fig. 5, so that the cam shaft remains at rest. But when one of the pawls onthe cam l is tripped and dislodged from the ledge Ed the spring 5c acts to shift the'parts 4a and ib and in turn rocks the forked lever '1 to clutch engaging position whereby to start rotation of the cam shaft. And when the lever A is thus moved to clutch engaging position it reacts upon and rocks the cooperating levers 8 and 9 in opposite directions to the position indicated in Fig. 3a wherethey are held by action of the clutch spring to while the cam shaft is rotating. With the levers 8- and' 9 held in the position shown in Fig. 3a, it will be observed that the ledge 8a of the lever 8 is disposed at an upward inclination. Accordingly the levers 8 and 9 are susceptible to being rocked back to the position shown in Fig. 3 by the next pawl which encounters the ledge 3a,. thus to disengage the clutch and stop the cam shaft.

When necessary or desired the clutch may be operated manually, in known manner, by means of a bar II extending to a handle l2 near the operator at the front of the machine. When the handle is pulled forwardly a stud l3 on the bar I I encounters the arm M at the foot of the vertical lever i9 and turns the latter to the extent that the arm I5 at the top swings against such pawl as may be lodged on the lever 8 and dislodges it, whereupon the clutch spring 50!. acts to effect engagement of the clutch. Should the handle l2 and with it the bar ll be pushed rearwardly as far as possible, the throat of a slot at the inner end of the bar engages the stud IS in the arm ll of the lever A and holds the latter in clutch disengaging position in opposition to the clutch spring 5a.

The specific arrangement of pawls on the cam I of the machine to which the present invention is applied is best shown in Fig. 3. Here it will be seen that the cam I is provided with three of the familiar pivoted pawls, instead of only two as in commercial type-slug casting machines and in the photo-composing machine of Patent No. 2,395,659. The pawl I8 corresponds to the conventional so-called starting pawl, and each 360 degree cycle of rotation of the cam shaft l starts from the idle or rest position of the machine, as shown in Figs. 3 and 6, upon tripping of this pawl. The pawl 59 is disposed, as in the machine of the above'patent, for stopping the cam shaft after about 150 degrees of rotation (the stops position shown in Fig. 7, this being the point in a cycle of operation of the machine where the element photographing operation begins and the usual second elevator is seated at its element receiving position in the so-called line transfer channel 24.

The pawl 29 is the additional pawl introduced by the present invention for effecting stopping of the cam shaft at an intermediate line-reading station as herein proposed. The pawl 29 is so disposed on the cam I as to stop the cam shaft after about 115 degrees of rotation from the point where it was stopped by the pawl I9, or about 95 degrees in advance of completing a full cycle of operation of the machine. When the cam shaft is stopped by the pawl 29, the contour of the cam 2! which governs the positions and movements of the second elevator is such that the elevator head 22, pivoted at the free end of the lever 23, is held at rest at the position shown in Figs. 1 and 8. As evident, this position is somewhat above the transfer channel 24 into which used elements or matrices are discharged and accumulate on the ribbed elevator bar U after the photographing operation. At such partially raised position of the elevator 22, reference letters provided on the front edges of the elements M, see Fig. la, are clearly visible to and readable by the operator.

As provided for in Patents Nos. 2,391,021 and 2,395,659, electro-mechanical means including a solenoid relay 26 are provided for tripping the pawls I8 and i9 and also the additional pawl 29 of the present invention, whereby to start rotation of the cam shaft from each of the abovementioned three possible stopping positions involved in a complete cycle of the machine. The

relay 26 is activated to trip these pawls at the appropriate times through the closing of switches TI, 28 and 29, and other switches in circuit therewith as will shortly appear, in timed relation with the progress of a line of elements or matrices from one to another station on the machine. For the sake of simplicity of construction over the arrangement in the aforesaid patents, the relay 26 is herein so arranged as to trip and dislodge a pawl from the ledge 8a. by action of the relay armature 0n the arm I5 at the top of the usual vertical lever I9 instead of on the arm I4 at the foot of this lever. Both arrangements however are functionally equivalent in that upon tripping a pawl the driving clutch is engaged for rotating the cam shaft.

Thus, as best seen in Figs. 2 and 4 and evident also from Fig. 5, the armature 30 of the relay 26 as herein arranged is pivotally connected to the upper forked arm of a lever 3I pivoted at 32 on a fixed bracket 33, the lower forked arm of the lever 3| being pivotally connected to a pawl actuating bar 34 which is shiftable in suitable guides on the bracket 33. The actuating bar 34 is disposed at the level of and at degrees to the arm I5 at the top of the vertical lever or post l9 and it will be apparent that magnetic pull on the armature 39 when the relay 25 is energized results in rocking the lever 3| anticlockwise as viewed in Fig. 4. In consequence, the bar 34 is shifted to the right against the arm I5 of the vertical lever I9 and turns the latter to the extent that the arm I5 strikes and dislodges a pawl (the pawl I8 for example, as shown in section in Fig. 4) from the ledge 8a of the lever 8, thus enabling the clutch spring 5a to effect engagement of the clutch. Rubber tipped adjusting and banking screws 35, 36 serve to limit the stroke of the lever 3| in either direction and to provide quiet operation of the lever which rocks sharply in response to the relay armature 39.

The switches 21, 28 and 29 are of the open biased type, each having an extended spring contact arm which is engaged, to close the switch at the appropriate time (to complete a circuit through the relay 26 when other switches as shortly explained permit) by lugs 31 or 38 provided at the opposite sides of a drum 39 secured to the cam shaft I. The switches 21 and 28 correspond to similar switches provided in the photo-composing machines of the above-mentioned patents for activating the starting relay to eifect tripping of pawls which correspond to those herein designated I8 and IS. The switch 29 serves under different conditions to activate the relay 26 to effect tripping and deflecting of the new pawl 20 of the invention. As hereinafter explained, the switch 29 is in circuit with the relay 29 and with a switch Z which together constitute the control means provided by the invention for determining whether or not the pawl 20 shall be efiective to stop the cam shaft at the herein proposed line-reading station.

At'the idle or rest position of the machine, with the clutch held disengaged by the pawl I8 resting on the lever 8, as indicated in Figs. 2, 3, 5 and 6, the lug 31 is so disposed on the drum 39 as to engage and close the switch 21. However, as apparent from the circuit diagram of Fig. 5, switch 2'! alone when closed fails to complete a circuit through the relay 26 whereby to energize the latter. To complete such circuit the switch X must also be closed, and this occurs, as already pointed out with reference to Fig. 1,

each time the finger D rocks the catch K upon delivery of a composed line of elements to the position M-3, The armature 3,0 of the thus energized relay then operates to trip the pawl I8, whereupon theclutch spring 5 acts to engage the clutch and start a cycle of rotation of the cam shaft and the drum 39 thereon, in the direction indicated by the arrow in Figs. 3 and 6. As the cam shaft starts turning the lug 31 disengages the switch 21 which latter then opens and breaks the relay circuit. A spring 3m acting on the lever 3| then operates to retract the pawl actuating bar 34, thus enabling the vertical lever (under the influence of its usual spring, not shown) to turn back to its normal position, as indicated in Figs. 2 and 4.

After about 150 degrees of rotation (for effecting actions of the line measuring and justifying devices by the cams P and Q) the cam shaft is stopped by the pawl i9 Which encounters and rocks the levers 8, 9 and 4 to clutch disengaging position. At this stop position the lug 38 on the drum 39 engages and closes the switch 28 in the relay circuit without however energizing the relay. As with the machines of Patents Nos. 2,391,021 and 2,395,659, the cam shaft now remains at rest until all of the elements of the composed line thereof have been removed and photographed and the last removed element has been discharged onto the elevator bar U, whereupon the delay action switch Y which is in circuit with both the relaylfi and the switch 28 is closed by action initiated by the line delivery lever E after removal of thelast element, all as exp ained in detail in the abovementioned patents.

With both of the switches 28 and Y closed the relay 26 is againenergized and operates to trip the pawl i9, thus allowing the clutch spring 5a to shift the clutch into engagement, The cam shaft now rotates until stoppedagain, either by the new pawl Z!) of the invention after about 115 degrees of rotation, or by the pawl 18 after about 219 de es f ot tion w ch o l t a full cycle of operation of the machine. As the cam shaft and the drum'39'thereon start turning, in response to tripping of the pawl 19, the lug .8 is eases the switch 28 hi at r then opensand breaks the relay circuit.

The control means of the invention by which the newpawl 29 is rendered effective or ineffecline-reading station, will now be described with reference particularly to Figs, 9 to 13 which illustrate the bfiforementioned switch Z which in effect is a master control switch in circuit with the relay 26 and the switch 29 and is operatively associated With theusual word-space key levers 4i and 42 of the keyboard as well as with the line assembler C.

As Well known, the key levers 4|, .42 operate in commercial line composing machines to effect release (from a suitable storage box) of the familiar wedge spacebands used to provide space between words and which are expansible in thickness to effect line justification. However, since such spacebands are not employed in the photocomposing machine to which the present invention is ap lied, a known arrangement is provided wl'iereby the key levers 4i 42 selectively effect refrom appropriate storage channels in the magazine A, of either thin or thick spacer elements of fixed thickness, these being commonly known and used auxiliary spacers and being entirely suitable for word spacing purposes.

Then, according to the invention, the keyboard cam mechanisms ordinarily associated with the levers 4|, 42 to effect release of spacebands is appropriately connected for operating the switch Z of the control means alluded to above, see Figs. 5 and 9.

Release from the magazine A of the fixed thickness spacers just referred to, and of the character-bearing elements as well, is effected by the action of keyboard cam mechanism of familiar form, see Fig. 10, associated with the inner end of each keylever of the keyboard and also with the key levers 4|, 42, as shown at the lower right in Fig. 5. Such mechanism is operative, upon depression of a key, to reciprocate the vertical escapement actuating rod for the corresponding element storage channel in the magazine. This Well known action is illustrated in Figs. 5 and 10 wherein it is evident that when the pivoted trigger 44 is rocked in response to depression ofa key, the cam yoke 45 which normally rests on the tri ger and is pivoted at 46 drops by gravity, thus subjecting its cam 41 to contact with and rotation by the constantly revolving rubber roll 48. As the cam yoke swings upwardly in response to the rise in the contour of the cam 41, the vertical rod disposed immediately above the free end of the yoke is reciprocated and a'ctuates the magazine escapement.

The known arrangement by which depression of the key lever 4| or 42 (whichever one is most convenient to the operator) operates through the foregoing keyboard cam mechanism to effect release of a thin or a thick word-space element from the magazine A is best seen in Figs. 9 and 10. Thus, on the cross shaft 43 there'is mountedfor limited endwise shifting movement a formed member 49 having a knob 50 and formed at its opposite end with spaced arms bored to embrace'the shaft. The bent-over lip of an extension piece 5] secured to the member 49 engages a flat section formed on the shaft 43 to restrain the member 49 from turning on the shaft and to limitits endwise movement relative to the shaft. The portion of the member 49 between its spaced arms and beneath the shaft 43 is formed with forwardly projecting lugs 52 and .53. These lugs are so spaced apart that whenthe member 49 is shifted to its right hand limit the lug 52 overlies an upright extension 54 secured to the usual thin-space key lever 55, but when the member 49 is shifted to its lefthand limit the lug 53 overlies a similar upright extension 56 secured to the usual thick-space key lever 51. I

From the foregoing it will be apparent that whenever the cross shaft 43 is rocked by depression of one or the other of the word-space keys 4| or 42, either the thin-space key lever 55 or the thick-space key lever 51 will simultaneously be depressed, depending upon the shifted position of the member 49. As a result, the word-space element appropriate to the particular depressed key lever will be released from the magazine A, by reason of operation of the keyboard cam mechanism associated with such simultaneously depressed key lever.

It will also be apparent from the foregoing that each time the operator strikes either of the keys 4! or 42, to introduce a thin or thick spacer element in the line being composed, the keyboard cam mechanism directly associated with the keys 4], 42, as seen at the right in Fig. 5, will respond and actuate the vertical rod 60 which is freely connected to one end of a lever 6|, pivoted at 62.

. At the opposite or free end of the lever 6| is a bent-over lip which overlies the insulated support for the movable contact arm 63 of the switch Z, the arm 63 being pivoted at 64 between friction washers and the switch Z having a fixed contact 65. With such arrangement it will be seen that when the operator strikes the key 4| or 42 to release the very first spacer element required in the particular line under composition, actuation of the vertical rod 60 by its keyboard cam will rock the lever BI and in turn swing the contact arm 63 downward into closed relation with the switch contact 65. This action is clearly shown in Fig. 11 wherein the contacts of the switch Z are closed.

The switch Z now remains closed, as shown in Fig. 12 (due to the friction pivot 64 for the arm 63) while the lever 6| is repeatedly rocked by the rod 60 each time the operator strikes the wordspace key 4| or 42 to obtain the additional spacer elements required to complete the line being composed. Then, when the line assembler C is raised in customary manner for delivery of the completed line to the character reproducing station,

- the switch Z is opened in the manner illustrated in Fig. 13. Here it will be seen that at the raised or line delivery level of the assembler C its back wall C-| encounters the free end of a lever 65 pivoted at, 61, the lever 66 being freely connected, by a rockable link pivoted at 68, to the lower end of a bar 69 which is shiftable vertically in guides 16 and has a bent-over lip aligned with the movableswitch contact arm 63. As evident, rocking of the lever 66 by the assembler results in shifting the bar 69 and'the switch 66 upwardly whereby to open the switch Z. a

Turning now to the manner in which action of the stopping pawl 20 of the invention is controlled by the switch Z, in conjunction with the switch 29 and the relay 26 which are in circuit therewith, it will be evident from Figs. to 8 and Fig. -4az (a) That the open biassed switch 29 is closed by the lever 8 by the stopping pawl 20;

(b) That only when both of the switches 29 and Z are closedis an energizingcircuit completed ,throughthe relay. 26 whereby to actua its armature;

(c).That as indicated in Fig. 4a, should the relay 26 be energized and its armatureactuated at the time the pawl '20 approaches the lever 8 .while the cam shaft is rotating, the arm 15 of the vertical lever III will be held in overlying relation with the lever 8 by the bar 34 of the actuated relay armature, thereby presenting in thepath of the pawl the inclined edge H of the arm I 5 which then acts to V deflect the pawl, as indicated, until it has by-passed the lever 8, or at least the ledge 8a thereof. That the relay 26 and its armature, together with the switches 29 and Z, constitute devices conditioned for actuation to deflect or to trip the pawl 20 from its clutchdisengaging position in response to operation of akey of the Thus, should the operator raise the assembler C to "send-in a composed line and thus open the switch Z, then fail to compose another line or to depress a spacer key 4| or 42 to again close the switch Z before the lug 31 closes the switch 29, the relay 26 will not be energized. Accordingly, the pawl 20 which is normally biassed to an active position to encounter the lever 8 will rock this lever and disengage the clutch, thus stopping the cam shaft with the elevator 22 arrested at the line-reading station as shown in Figs. 1 and 8.

However should the operator send-in a composed line and thus open the switch Z, but then proceed to compose another line and by operation of a spacer key close this switch again before the lug 31 closes the switch 29, a circuit will be completed through the relay and its armature actuated the moment the switch 29 is closed by the lug 31 as the cam shaft rotates and moves the pawl 20 toward the lever 8. Accordingly, the pawl 29 will be deflected past the lever 8 by riding over the inclined edge H of the arm l5, see Fig. 4a, thus allowing the cam shaft to rotate until stopped by the pawl I8 at the position shown in Fig. 6. Here the elevator 22 under control of its cam 2| has taken its full upward swing without interruption from its lowered element receiving station shown in Fig. 7 to the element distributing station.

Whenever the pawl '20 operates to arrest the elevator at the line-reading station, due to an interruption in operation of the keyboard, the

. switch 29 is held closed by the lug 31, see Fig. 8,

while the switch Z remains in the open position it was left or moved to by raising of the assembler C to send in the last composed line of elements. Then, upon resumption of composition at the keyboard the pawl 20 is tripped from its seat on the lever 8 the first time a spacer key 4| or 42 is struck and thus closes the switch Z, whereby to complete an energizing circuit through the relay and the closed switch 29. Reengagement of the clutch due to such tripping or the pawl 20 results in rotation of the cam shaft through the remaining portion of its cycle (about degrees) which ends-when the pawl l8 rocks the levers 8 and 9 to clutch disengaging position. During such rotation of the cam shaft the elevator 22 with the elements thereon of the last line reproduced is moved by its cam to the element distributing station, as indicated in Fig. 6.

Summarizing the actions during a complete cycle of operation of the machine, the pawl i8 is tripped to start a 360 degree cycle of the cam shaft when the relay 26 is energized by the flow of current through the switch 21 (held closed by the lug 31 when the machine is at rest, see Figs. 5 and 6) and through the switch X which is closed each time a line of elements is delivered to the position M-3. The pawl I9 is tripped to restart the cycle, stopped after about 150 degrees of rotation for the photographing operation,

when the relay 26 is energized by the flow of current through the switch 28 (held closed by the lug 38 during the photographing operation, see Fig. 7) and through the switch Y which is closed after the last element of the line thereof has been photographed and discharged onto the second elevator bar U. The pawl 20 is tripped to restart the cycle, if stopped by such pawl after further rotation of about degrees to present a used line of elements at the line-reading station, when the relay 26 is energized by the flow of current through the switch 29 and the (6 switch Z. After tripping of the pawl 20 rotation 13 of the camshaft through the last 95 degrees of the cycle is stopped by the clutch disengaging action of the pawl 18.

From the foregoing it will be apparent to those skilled in the art that the elevator or element transporter controls provided by the invention are readily applicable to typographical machines of the kind herein referred to; that such controls operate automatically to provide the operator with reliable means for identifying the last line produced in the event of an interruption, and that identfication through presentation at a character reading position of the elements used to produce a line is a distinct advantage in connection with typographical machines whether of the type-slug casting or photo-composing variety. Moreover, it will be evident that the construction, operation and arrangement of parts as herein described merely by way of example are susceptible to modifications vithin the spirit and scope of the invention and that the invention is useful with character-bearing elements of different for as, such as the photographable elements described in Patent No. 2,942,041.

Having described my invention, I claim:

1. In a typographical machine having elevator movable from a station for receiving charactei bearing elements, after their use at a sta" tion at which the characters thereof produced to form a line of type matter, port said elements to an element di station, driving mean operative t elevator from said receving to a station, a control member con ted mechanically with said d said elevator and operative to means and arrest the elevator at a predetern position intermedate of said element receiving and distributing stations, thereby to hold the used line of elements stationary visual identiflcation of their characters.

2. In a typographical machine havin an elevator movable from a staton for receiving charaster-bearing elements previously composed into a line, after their use at a station which the characters thereof were reproduced to form a line of type matter, to transport said elements to an element distributing station, a rotatable cam shaft including a cam operable to move said elevator from said receiving to said distributing station, driving including means shiftable into and out of driving engagement with the cam shaft, and a clutch-operating member mounted for rotation with said shaft and located circumferentially thereof at a point for shifting the clutch out of driving engagement in timed relation with movement of the elevator by its cam to a predetermined position intermediate of its element receiving station and the element distributing station.

3. In a typographical machine equipped to pre- 'duce lines of type matter from composed lines of character-bearing elements adapted for circulation from a storage magazine to a character reproducing station and thence to a distributing ating member mounted for rotation with the cam shaft and normally held yieldingly in an active position to disengage the clutch to arrest the elevator in timed relation with movement thereof by its cam to a position to expose the characters of the used elements thereon for visual identification in close proximity to the element receiving station of said elevator.

4. A typographical machine according to claim 3, including a keyboard for composing lines of elements from which to produce the lines of type matter, wherein there are provided electromechanical devices operatively associated with the clutch operating member and operable in response to operation of a key of the keyboard prior to movement of the elevator from the receiving station to displace said member from its active postion while the cam shaft is rotating, whereby to prevent arrest of the transporting movement of the elevator.

5. In a typographical machine having storage and distributing devices for character-bearing elements and spacer elements and having a keyboard for composin a line of such elements, said machine being adapted. to circulate the composed line of elements to a character reproducing station for reproducing therefrom a line of type matter and then to a discharging station; an elevator for receiving the elements at the discharging station, a rotatable cam shaft including a cam for moving said elevator to transport the elements received thereby to the distributing devices, a clutch controlled drive for the cam shaft and a clutch operating paw1 mounted for rotation with said shaft and located circumferentially thereon at a point to disengage the clutch and thus arrest the elevator at a predetermined position between the discharging station and the distributing devices, and pawl actuating devices operable to deflect said pawl from its clutch disengaging position to prevent such arrest of the elevator, said devices including parts correlated to act to deflect the pawl in response to operation of a spacer key of the keyboard prior to rotation of the cam shaft to the arresting position of the elevator.

6. In a typographical machine equipped to produce a line of type matter from characterbearing elements and spacer elements composed in aline assembler by operation of a keyboard, said assembler being movable to deliver the composed 'line of elements to character reproducing station, an elevator movable from a position for receiving the elements from said reproducing station to transport them to an element distributing station, a rotatable clutch driven shaft operative to so move the elevator and to move a clutch control member in timed relation with movement of said elevator, said clutch control member being normally held in an active position to disengage the clutch during rotation of the shaft to interrupt the transporting movement of the elevator at a predetermined character reading position adjacent to its element receiving position, and devices governing the operation of said control member, devices comprising parts operable to deflect said member from its active position and conditioned for actuation by operation of a spacer key of the keyboard prior to movement of the elevator but conditioned for non-actuation by delivery movement of the line assembler subsequent to operation of a spacer key.

7. In a typographical machine employing character-bearing elements having readable identifying characters and equipped to circulate a line of such elements, composed in a line assembler by operation of a keyboard, to a character-reproducing station and thence to element discharging and distributing stations, a power driven shaft and organs responsive to rotation thereof to circulate a composed line of elements progressively to said stations including an element holder movable to transport the elements from the discharging to the distributing station, and arresting means actuated by said rotating shaft and positioned to stop rotation thereof and arrest said holder at a predetermined point intermediate of said discharging and distributing stations, whereby to hold the transported elements stationary for reading their identifying characters.

8. In a typographical machine having elevator means movable from a position for receiving a line of character-bearing elements after their use at a character reproducing station to transport them to a distributing station, driving means including an elevator movin and positioning member and a clutch shiftabl to start and stop the drivin means, and clutch shifting means comprising a part cooperatively related to said moving and positioning member and operative to disengage the clutch to stop the driving means at a point in which said member holds the elevator and the elements thereon at a character reading level removed from but adjacent to its element receiving position.

9. In a typographical machine having elevator means movable from a station for receiving a line of character-bearing elements after their use at a character reproducing station to transport them to a distributing station, a power driven shaft and a member responsive to rotation of said shaft to move and to position the elevator relative to said stations, a clutch shiftable into and out of driving engagement with said shaft, and a clutch shifting part moved by the rotating shaft to a clutch disengaging position in timed relation to stop the shaft upon movement of the elevator by said member to a predetermined position of rest between the element receiving and distributing stations.

10. In a typographical machine having elevator means movable from a position for receiving a line of character-bearing elements after their use at a character reproducing station to transport them to a distributing station, driving means for moving said elevator and a control member cooperatively related to said driving means to position the elevator relative to said stations, a clutch shiftable'to start and stop said driving means, and a clutch shifting device actuated by the driving means and cooperatively related to said control member to coordinate disengagement of the clutch with positioning of th elevator by said member at a selected point between said stations.

11. In a typographical photo-composing machine; equipped with a storage magazine for elements bearing photographable characters and identifying reference'letters and with a keyboard for composing a line of such elements and spacer elements from which to photographically reproduce a line of type matter, an elevator movable from a station for receiving the elements after their use in producing the line of type matter to a station for distributing the elements back to the storag magazine, driving means including a rotatable, clutch controlled, drive shaft having a cam for imparting such movement to the elevator, a clutch operating paw-1 positioned relative to said drive shaft and said cam to disengage the clutch to stop the shaft and arrest said elevator at preselected level above the element receiving station such as to expose to view the reference letters on the elements, and a pawl tripping member conditioned for actuation to trip said pawl from its clutch disengaging position after such stopping of the shaft, said member being so con ditioned by devices responsive to operation of a spacer key of the keyboard.

12. A typographical machine according to claim 11, wherein the devices responsive to operation of a spacer key of the keyboard include a member positioned, when said key is operated prior to movement of the elevator from the element receiving station, to condition the pawl tripping member for actuation to deflect the clutch operating pawl from its clutch disengaging position, whereby to enable movement of the elevator directly from the element receiving to the element distributing station.

13. In a typographical machine equipped to produce lines of type matter photographically from composed lines of character-bearing elements, each element having a reference letter indicative of a photographable character borne thereby, an elevator movable from a station for receiving the elements of a line after their use at a photographing station to transport them to a distributing station, a rotary drive shaft having a cam timed to impart such movement to the elevator and having a yieldingly mounted stopping pawl located thereon at a point correlated to movement of the elevator by said cam, and clutch mechanism operable to govern rotation of said drive shaft, said stopping pawl being operable on said mechanism to disengage the clutch to stop rotation of the drive shaft and. in turn arrest transporting movement of the elevator at a position in which the reference letters on the elements are exposed at a predetermined reading level adjacent to the element receiving station.

14. A typographical machine according to claim 13, including a keyboard for composing a line of elements with suitable spacers and an assembler movable for deliver of the composed. line to the photographing station, and wherein there are provided electro-mechanical means for controlling the operation of the drive shaft stopping pawl, said means comprising a solenoid relay having armature means operable when the relay is energized to deflect said pawl from clutch disengaging position, a switch closed by operation of a key of the keyboard and opened by line delivery movement of the line assembler, and an open biassed timing switch positioned for closing in response to rotation of the drive shaft to the point of operation of the pawl to stop said shaft, said relay being energized whereby to deflect said pawl only when both of said switches are closed.

15. A typographical machine according to claim 13, including a keyboard for composing a line of elements and an assembler movable for delivery of the composed line to the photographing station, and wherein there are provided devices operatively associated with the clutch mechanism and conditioned for actuation by operation of a key of the keyboard to deflect the stopping pawl from its clutch disengaging position to prevent arrest of the elevator, said devices being reconditioned by line delivery movement of the assembler after operation of a spacer key to permit said pawl to act to disengage the clutch.

16. In a photo-composing machine equipped to produce lines of type matter from elements bearing photographable characters and identifying reference letters and composed into lines by manipulation of a keyboard, a line assembler movable for delivery of a composed line of elements to a photographic station, an elevator movable from a position for receiving the photographed elements to transport them to a distributing station, a power-driven cam shaft including clutch means operable to control rotation thereof and a cam formed to move said elevator, a clutch operating pawl operable in response to rotation of said cam shaft to disengag the clutch to stop said shaft at a position in which said cam holds said elevator at rest with the reference letters on the elements exposed at a predetermined reading level adjacent to the element-receiving position of the elevator, a member associated with said clutch means and movable to trip the clutch operating pawl after such stopping of the cam shaft, and devices conditioned by operation of a key of the keyboard to actuate said pawl tripping member, said devices being restored to non-actuating condition by the line assembler upon delivery movement thereof.

17. In a photo-composing machine for producing lines of type matter from photographable character-bearing elements having readable identifying characters and composed in a line assembler by operation of a keyboard, said machine having element photographing, discharging and distributing stations and organs responsive to a power driven, clutch controlled, cam shaft for circulating a composed line of elements progressively to said stations including an elevator movable to transport the elements from the discharging to the distributing station, and elevator arresting means moved by rotation of the cam shaft to a position to disengage the clutch and arrest said elevator at a predetermined point intermediate of said stations, whereby to hold the transported elements stationary for reading their identifying characters.

18. In a photo-composing machine for producing a line of type matter from photographable character-bearing elements having readable identifying characters and composed in a line assembler by operation of a keyboard, said assembler being movable to deliver the composed line of elements to a photographing station, elevator means movable from a position for receiving the elements after their use at the photographing station to transport them to an element distributing station, a rotatable drive shaft including a control member operable to move and to position the elevator relative to said stations, a clutch shiftable to start and stop said drive shaft, and a displaceable clutch shifting device normally operable in response to movement thereof by the rotating drive shaft to coordinate disengagement of the clutch with movement of the elevator by said control member a distance from its element receiving position sufiicient to readably expose the identifying characters of the elements.

19. A photo-composing machine according to claim 13, wherein electro-mechanical means are provided to govern the operation of the clutch shifting device, said means comprising a solenoid relay having armature means operable when said relay is energized to displace said device from its clutch shifting position, a switch closed in response to operation of the keyboard and opened by line delivery movement of the line assembler, and an open biassed switch closed by a moving part moved with the drive shaft in timed relation with movement thereby of the clutch shifting device, said relay being energized and its armature actuated to displace said device to prevent disengagement oi the clutch omy when the relay circuit is completed by the closing of both of said switches.

20. A typographical machine according to claim 6, wherein the devices governing the operation of the clutch control memoer specified comprise an electro-mecnanical relay having armature means cooperable with said member, a switch closed by operation of a spacer key and opened by delivery movement of the line assembler, and an open massed switch momentarily closed by a part moved by the rotating shait in advance of movement thereby of said control member to its clutch disengaging position, said relay being energized and its armature actuated to deflect the control member irom its active position only when both of said switches are closed, and such deflecting of the control member enabling movement of the elevator without interruption to the element distributing station.

21. In a typographical machine employing character-bearing elements having readable identifying characters and equipped with a keyboard ior composing a line of such elements in a line assembler movable to deliver the composed line to a character reproducing station, transporter means for receiving and transporting the elements from the character reproducing station to an element distributing station, a rotatable drive shaft including a transporter moving and positioning member and clutch means shiftable to start and stop said drive shaft, a clutch shifting part moved in response to rotation of the shaft to a clutch disengaging position in timed relation with movement of the transporter by said member to a predetermined stop position between the character reproducing and element distributing stations, and a relay having armature means operable to deflect said part from clutch disengagin position, said relay being energized and its armature actuated to deflect said part upon the closing of an open biassed switch momentarily closed by the rotating shaft as the transporter approaches its stop position and the closing of a switch opened by delivery movement of the line assembler and closed by subsequent operation of a key of the keyboard.

22. In a typographical machine equipped to produce lines of type matter from photographable character-bearing elements having readable identifying characters and equipped with a keyboard for composing such elements in a line assembler movable to deliver a composed line of elements to a character reproducing station, an element holder for receiving and transporting the line of elements from said station to an element distributing station, a rotable clutch driven shaft including a member operable to move and to position said holder relative to said stations and a displaceable clutch shifting organ normally positioned and operable during rotation of said shaft to disengage the clutch to arrest the holder at a predetermined point between said stations, and electro-mechanical devices including a control switch and the armature of a relay correlated and connected to act to deflect said organ from clutch disengaging position after arrest of the holder in response to closing of said switch by operation of a key of the keyboard.

23. A typographical machine according to claim 9, ineludin'g a keyboard for composing a line of character-bearing elements and spacer elements and a line assembler movable to deliver the composed line of elements to the character reproduci'ng' station, and wherein there is provided a solenoid relay having an armature cooperative with the clutch shifting part and switches correlated to activate said relay and by its armature to defiect said part from clutch disengaging position, said switches including a master control switch closed by operation of a spacer key of the keyboard to activate the relay and opened by delivery movement of the line assembler to inactivate said relay.

24.111 a typographical machine equipped to produce line of type matter from composed lines of character-bearing elements, each element bearing a reproducible type character and an identifying reference character and the elements being composed from a storage magazine by manipulation of a keyboard, a rotatable power driven cam shaft and organs adapted in response to rotation thereto to move and to present a composed line of elements progressively at a character reproducing station, a station at which the reference characters of the elements are visible for reading after use of the elements in producing the line of type matter and thence at an element distributing station associated with the storage magazine, cluch means shiftable into and out of driving engagement with the cam shaft, and a plurality of stopping pawls each related by mechanical positioning thereof to one of the aforesaid stations, said pawls being moved by the rotating shaft each in succession during a cycle of operation of the machine to a clutch disengaging position in timed relation to stop the shaft upon arrival of the line of elements at the corresponding stations.

25. A typographical machine according to claim 24, wherein there are provided devices cooperatively associated with the stopping pawls speci fled and operative to trip said pawls to re-engage the clutch after stopping of the cam shaft, said devices being connected and conditioned, in response to operation of the keyboard in composing a succeeding line of elements, to inactivate the pawl corresponding to the reference character reading station, whereby to enable movement of the used line of elements without presentation at said station;

FRITZ STADELMANN.

No references cited.

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