US1623748A - Printing telegraphs - Google Patents

Description

I 1 623,748 April 5 1927 H. PFANNEVNSTIEHL PRINTING TELEGRAPHS Filed Dec. 2l. Y1923 '7 Sheets-Sheet 1 A v` y 1,6235@ April 5 1927' H. PFANNENSTIEHL I PRINTING TELEGRAPHS Filed Deo. 2l. 1923 '7 Sheets-Sheet 2 April 5 1927.,

Filed D'ec. 2l, 1923 WNW 7 Sheets-Sheet 3 April 5 1927 d. PFANNENSTIEHL PRINTING TELEGRAPHS Filed Dec. 2l, 1923 7 Sheets-Sheet 5 April 5 1927, 1,623,748

H.-PFANNENSTIEHL PRINTING TELEGRAPHS Filed Dec. 2l. 1923 7 Sheets-'Sheet 6 1,623,748 APl 5 1 927 H. PFANNENSTIEHL l PRINTING TELEGRAPHS Filed Dec. 2l, 19255 ffy/2 'ff/a3 ,406, fwg

Patented Apr. 5, 1927.

inane FFQFL.

NEW YORK. l

ASSIGNOR T WESTERN Y., A CORPORATION OF PRINTING TELEGRAPI-IS.

Application filed Becembel 2l, 1923. Serial No. 681,921.

rlhis invention relates to signaling systems and apparatus and is particularly adapted to be used inconnection with printing telegraph systems. Y

An object of the invention is to combine the apparatus necessary to the selection and transmission or" character selecting impulses into one piece of apparatus thereby providing a simpler' and a cheaper mechanism.

A. feature of the invention is the arrangement of the apparatus 'whereby either direct keyboard or tape sending may be provided without the use ot any additional transmitting contacts.

Still another `feature. is the arrangement ot a mechanical distributor for operating a single transmitting` contact either in accordance with the setting of the selecting members oi the keyboard or the positioning` of members controlled Vby pertorations in a transmitting tape or due to the operation of automatic control mechanism vwhich functions to eeet the transmission of auxiliary signals.

A further feature is the provision of a tape perforator `mechanism and a transmitting mechanism which derive their power from a common source of motive power.

Other objects-will be in part obvious and in part pointed out in the following description.

'llo attain these objects, the present invention contenuilates akeyboard selecting mechanism, a tape pcrforating mechanism, a4 tape transn'iitter7 an automatic signal control mechanism, a keyboard transmitter and a mechanical distributor operating on a single Contact all combined into a unitary structure and provided with means whereby .the respective mechanisms may be operated separately.

Each of the mechanisms requiring power derives its power from a continuously running motor through suitable sha-fting and gears whereby the various functions are performed positively.

rlhe various features ot the invention may be more clearly understood by reference to the accompanying drawings in which,

Fig. l is a plan view showing the arrangement of the various pieces of the mechanism.

Fig. 2 is a plan view of' a part or" the mechanism with the cover removed.

Fig. 3 is another plan View showing some of the mechanism not illustrated in Fig. 2.

F 1g. 4 is a side elevation taken on line 1*4 of Fig. 2 of the perforating mechanism and a part of the tape selecting mechanism.

Fig. 5 is a sectional view taken along the broken line 5 5 of Fig. 2.

Fig. 6 is a view taken along the line (3 6 of Fig. 5.

Fig. 7 is an elevation or0 the automatic control mechanism and the tape selecting mechanism and is taken along line 7 7 oil/F ig. 3.

F ig. 8 is an eleva-tion with some of the mechanism shown in Fig. 7 removed for the purpose of more clearly showing some ot' the hidden parts7 and is taken along line 8-8 of Fig. 3.

Fig. 9 is a view taken along the line 5) of Fig. 3.

Fig. l0 is a view io-io of rug. e.

Fig. ll is a view l1-1l ot Fig. 3. Fig. l2 is a view 12-12 of Fig. 3.

Fig. 13 is a view 13H13 of nig. 2.

Fig. 14k is a detail view showing aA part of the mechanism for changing from direct keyboard to tape sending.

F l5 is. a development oil the cams ot the distributor.

Fig. 16 is a detail View ot the distriluitor looking from the rear.

Fig. 17 is an end view of the distributor.

A better understanding of the invention nay be had from the followingdescription, taken in conjunction with the accompanying drawings which show the various parts or the mechanism.

eierring for the moment to Fig. l, mounted on a base 3 are a keyboard selecting mechanism A, a perforator F, a mechanism C, which act to transmit signal impulses either in accordance with the depression oie the character keys in the selecting mechanism A or the pertorations in a previously perforated tape or due to the operation of an automatic control mechanism for the transmission of auxiliary signal impulses, and a continuously running motor D. rlhe power circuit igor the motor D is brought in through a pair of connecting plugs 4,

taken along the line taken alongl the line taken along the line taken along the line there also being a pair of iuses connected in the motor circuit for protection purposes. The shaft of the motor D is coupled to a shat't 6 through aflexible coupling 7. Mounted on'the shaft 6 are a pair of gears 8 and 9 which have their teeth meshed with those ot' gears 10 and 11j respectively. Each ofthe gears 1() and 11 is mounted on a shaft which is supported by suitable bearings counted in a housing 14, it, of course, being understood that the housing 14 completely encloses the various gears thereby permitting thc proper luln'ication. The shaft 1.6 on which the gear 10 is mounted is coupled to a shaft 17 extending to the pei'torator n'rechanism B by means of a :flexible coupling 18. Secured to the gear 11 is a gear 19 which meshes with a gear 2() which is secured to a shaft 21 extending to the mechanism C. There is also mounted on the end ot' the shaft 6 opposite to that ot the motorv D, a governor 22 for regulating the speed ot the motor D. This governor siniilar to that shown and described in Patent No. 1,366,072, issued June 10, 1919, to B. F. Merritt,

rlhe selecting mechanism A. comprises a set ot keys 25 which are arranged in a manner similar to that oi a keyboard in a standard typewriter. Each ot these keys 25 operates selecting members (not shown) for setting up predetermined combinations in accordance with the depression of each key. The selecting mechanism A is similar to that disclosed in U. S. Patent No. 1,533,206 granted to me on April 14, 1925. However, to clarify the description, a portion of the selecting bars 26 has been shown in Fig. 4.

The selecting bars 26 have one end tastened to levers 27 which are pivotally mounted in a supporting block 2S as shown in Figs. 4 and 6, The levers 27 have secured thereto two sets ot' operating members 29 and 30. One set of membersI 29 extends through suitable links Vto the mechanism C and lunction to set up Yvarious combinations in accordance with the actuation ot the character keys 25 for the transmission ot selecting current impulses directly trom the keyboard. The other set of members 3() serves to select in various combinations a mechanism for pertorating a tape in accordance with the movement ot' the selecting bars 26. The perforating mechanism as shown in Figs, 2, 4, 5 and 6 comprises a plurality of character punch pins 39 and a similar feed punch pin 4l). These punch pins are fitted in apertures in an extension member 42 which is carried by the 'frame ot"l the per- Aorating mechanism. The apertures in this extension member' serve as guides 'for the punch pins. Each of the character punch pins 39 and the feed punch pin 40 is provided with enlarged portion or collar 43 which normally rests on the extension 42.

The punch pins pass through holes or openings in a member 45 which is supported by means of a pair of uprights 46 and 47. The power for driving the punch pins through a tape 62 in accordance with the positioning of the selecting members 30 beneath the punch pins as determined by the selecting members 26 is as pre 'iouslydescribed', de rivedy from` the motor D through suitable shatting. Secured to the shat't 17 is a membery 31 which carries projections capable of being engaged by similar projections carried by a member 32. The member is mounted on shaft and is normally under spring tension but normally held against rotation due to its engagement by a member 56 which is secured to a rod 36 and which is also normally under the tension of a spring 57. There is also secured to the rod 36 anV upright member 37 which is arranged to be operated by member 34- iiastened at one end to a pivoted member 33 also pivoted to the supporting block 28. The member 33 is arranged to be operated by a selecting bar of the selecting mechanism A upon the depression ot any one of the character keys 25. llhis feature is well known and is also fully described in U. S. Patent No. 1,533,206 previously referred to, Therefore a detailed description ot' this part ot the mechanism is believed unnecessary.

For each depression of a character key 25, the member 34 is moved through the action ot the pivoted member 33 tor moving the upright 37. Inasmuch as the upright 37 is secured to the same rod as stop 56, this Stop will be rotated for moving its free end out ofV the path of a projection on member 32` However, the member 32 which carries projecting` portions 58 is prevented from moving laterally until a roller carried by upright 37 is moved out of the path of either of these projecting portions. Immediately following the rotation of member 1;,2 rone of two projections 6() carried thereby'engages member 34 for litt-ing this member so that it no longer engages upright 37 at which time stops 56 and uprightv 37 are restored to normal by the action ot spring 57. Just prior to the complet-ion of a half cycle of rotation of member 32, the other projecting portion 58 engages the roller carriedvby the upright 37 which is now inits normal position thereby causing the member 32. to be moved to the right a distance sufficient to cause its disengagement with member 31 and the engagement of a projection on member 32 with the stop 56.

The shaft 53 upon which the member 32 is secured has mounted thereon a gear 54 which meshesL with the teeth of a gear 55 carried by sliaft49. Mounted on the shaft 491 are cams. 50 which serve to Cause the movement ot a pivoted hammer 51. The hammer 51is positioned beneath the punch Ll- O pins 39 and 40 and causes their movement in accordance with the operation of the cams 50 whenever one of the selecting members is positioned between it and the punch pins 39, it, of course, being understood that for each oaeration of the hammer 51 independent of the movement of levers 30, the feed hole punch pin 40 is operated for perforat-ing a feed hole in the tape. The uprights 46 and 47 to which the member 45 is secured are also carried by the hammer 51 and are thus moved cach time the cams 50 rotate. This arrangement Icauses the movement of the member 45 upward, allowing the punch pins to iinpinge the tape and following the perforating operation on the restoration of the hammer 51 to its normal position, the punch pins will be restored to their normal position positively due to the retraction of the member 45 which follows the movement of the hammer 51. Following the operation of the hammer 51 an eccentric 48 mounted on shaft 49 is effective for moving member 38 which extends to a counting mechanism (not shown). T his mechanism serves to indicate the position and number of characters in a given length of time.

The tape 62 is fed through a slot form-ed between members 63 and 64, Fig. 4, the feed holes perforated in the tape being engaged by a' feed wheel 65. The feed wheel 65 is secured to a shaft 66 which is supported by suitable bearings mounted in the housing. There is also secured to the shaft 66, as is more clearlv shown in Figs. 5 and 6, a ratchet wheel 67. u This ratchet wheel 67 is held against rotation by a ockeyv roller 68 which is suitably pivoted to a support and which may be adjusted due to the movement of member 61.

The mechanism for advancing the feed wheel through the rotation of the ratchet wheel 67 compris-es a stepping pawl 69 which is secured to one end of a bell crank lever and which is normally under spring tension of a spring 71. The spring 7l has one end secured to the stepping` pawl 69 while the other end is secured to a portion of the bell crank lever 70. The other end of the bell crank lever 70 is secured to a portion of the hammer 51 and thus follows its movement. When the hammer 51 is in its uppermost position, or the position shown in Fig. 6, the bell crank lever 70 and the stepping pawl 69 are in the position shown in heavy lines of this figure. Vlien the hammer 51 is partly restored to its normal position the stepping pawl 69 engages th-e next succeeding tooth in the ratchet 67 or assumes the dotted position 69A. Thus, with the hammer 51 restored to its normal position, the stepping pawl 69 takes up the dotted position 69B, and in consequence advances the ratchet wheel 67 through a distance equal to the space of one tooth, thereby causing the advancement of the tape 62 to bring an unperforated area before the punch pins 39 and 40.

It oftentimes happens that the tape will be perforated incorrectly. In order that a signal in accordance with such incorrect perforation will not be transmitted, mechanisin is provided for back spacing the tape and permitting of the correction of the perforation. rThis mechanism comprises as is shown in Figs. 2, 4 and 5, a lever 73 which has secured to one of its ends a member 74. The member 74 is arranged to engage a pin 72 secured to the stepping pawl 69 upon the depression of the lever 73. YVhen the projection 74 engages the pin 72, the pawl 69 is moved to a position where it no longer engages the teeth of the ratchet 67. There is also secured to the lever 73 and in alignment with the feed wheel 65 a spring pressed pawl 75. Now since the steoping pawl 69 is moved so that it disengages the teeth of the ratchet wheel 67, the pawl 75 engages the teeth on feed wheel 65 thus rotating the feed wheel backwards and causing the positioning of the incorrect set of perforations in alignment with the punch pins 39 and 40. This set of perforations may be obliterated by depressing one of the character keys 25 which causes the perforation of the tape in accordance with a blank signal. Thus, when this portion of the tape is fed through the transmitter, a signal will be transmitted but no operation of the receiving printer will result owing to the fact that the signal transmitted represents a. blank'signal.

The mechanism C is supported on a base plate which is secured to the base 3 and is preferably enclosed in a metallic casingl 31. A number of pedestals 82, 83, 84 and others which may be formed integral with or secured to the base plate 80 furnish supports for the moving parts, the bearings for the shafts being preferably formed in the enclosing housing. Secured to the inner surface of the housing is a block 85 to which there is fastened a pair of contacts 86 and 87 as shown in Figs, 2 and 8. Between t rese contacts there is interposed a contact making member which is carried by an arm 90. The arm 90 is fastened to a shaft 89 extending between the walls of the housing Fig. 2. idly secured to the shaft 89 are a pair of members 93 and 94 which have connected between their free ends a rod 96. The shaft 89 is encircled by a spring 99 which has one end fastened to the shaft and the other end to extension 98, thereby normally having the shaft S9 under spring tension. Equally spaced on the rod 96 are a number of rollers 102 each of which is provided with a groove Fig. 16. These rollers 102 are arranged to be moved into the path of cams 103 for causing the. upward movement of the rod 96 and in consequence the rotation of shaft 89 and the actuation of the contact making member which is secured to the arm 90. The cams 103 are carried by a drum 104 secured to a shaft 105 and have different angular spacings for causing the successive operation of the rod 96. The drum 104 as is shown in Figs. and 16 is provided With a plurality of grooves 106 and 107, there being a set of such grooves individual to each of the rollers 102. The purpose of these grooves Wiil be explained hereinafter.

Power for rotating the shaft is communicated thereto from the shaft 21 which, as previously described, derives its power from shaft 6 through a worm gear 9 and other suitable gears 19 and 20 through a clutch mechanism. This clutch mechanism comprises parts 76 and 77 secured to shafts 21 and 105, respectively. Each of these parts is provided with tooth like projections for providing a positive drive connection between the respective shafts. Secured to the part 77 is an arm 78 which is arranged to engage a stop 79. The stop 79 is carried by an arm 88 which. as shown in Figs. 2, 3 and 12, is rotatably mounted on a rod 9.1 secured V plunger 122 is a link 123.

to the pedestal 83. There is also fastened to the arm 88 a roller 92 which serves to cam the part 77 out of engagement with the part 76 Whenever the arm 78 engages this roller. Thus the arm 78 will be caused to engage the stop 79 and arrest the rotation of the shaft 105.

The arm 88 may be rotated about the rod 91 by means of two different mechanisms. One of these mechanisms comprises a link which has one end fastened to the arm 88 while its other end is secured to one end of a pivoted member 121. The other end of the pivoted member 121 is spoon-shaped for receiving the free end of a plunger 122. Fastened to the operating link 34 and the As previously described, the operating link 34 is arranged to be operated upon the depression of any one of the character keys and serves to release shaft for rotation. In the same manner when any one of the character keys 25 is depressed, the stop 79 is moved through the linkage arrangement just described out of the path of the arm 78 thus permitting the engagement of the part 77 with the part 76 to provide a positive drive connection between shaft 21 and shaft 105.

The stop 79 may also be moved into and out of the path of the arm 78 by the following mechanism. As shown in Figs. 2 and 12, the link 120 is provided with a slot 124 through which a pin like portion of shaft 125 projects. Also secured to the shaft 125 is an arm 127 to which one end of a spring 128 is secured, the other end of the spring 128 being secured to an eyelet in the link 120. In order that shaft 125 may be rotated for causing the movement of the link 120 and in consequence the movement of the arm 88, a knurled thumbnut 126 is suitably fastened thereto. As shown in Fig. 2 the knurled nut 126 is spring pressed and may be rotated for causing the rotation of the shaft 125 through a pin 119. By changing the position of the knurled nut 126, the arm 127 is rotated and in consequence a lateral movement of link 120 produced thereby either moving the stop 79 out of or in the path of arm 7 8, depending on the direction of rotation of nut 126.

The mechanism for selectively positioning the rollers 102 With respect to the cams 103 vill now be described. This mechanism, as is more clearly shown in Fig. 2, and 8, comprises a pair of brackets 109 and 110 secured to the pedestal 83 and having extending between them, a pair of rods 112 and 113. Equally spaced and slidably mounted on the rods 112 and 113 are a plurality of circular members 114 and 115 as is more clearly shown in Fig. 17. Connecting these circular members 114 and 115 is a yoke 1 16 which has a U- shaped aperture for engaging the groove formed in the rollers 102. Secured to the yoke 116 and rotatably mounted with a vertically extending rod 130 is an arm 117. It is,

of course, to be understood that for each of y the rollers 102, mechanism similar to that Just described is provided. The rods 130 are suitably secured to the pedestal 83 and have secured at their lower ends pivoted members 131. Each of these members is provided on its upper side with a pin Which is adapt-ed to engage the grooves 106 and 107 formed in the drum 104 and on their under side there is secured a knob like portion 136. The members 131 are held in a normal position by means of retractile springs 132 which have one end secured to the member'131 With the other end secured to a bracket 133.

The members 131 are adapted to be moved so that the pin 135 engages either of the grooves 106 or 107 in the drum 104 by means of members 139 pivoted at 140. Now when any one of the members 131 is selected its pin 135 engages groove 107 and on the continued rotation of the drum 104, the member 131 will be moved horizontally thus imparting to rod 13() a rotary movement. This rotary movement imparts a horizontal movement to the roller 102 through the yoke 116 and the arm 117 for causing the movement of the roller 102 out of the path of the cam 103 individual thereto. In this manner the contacts 86 and 87 will be operated for transmitting impulses in accordance with the settings of the members 131.

Fastened to each of the pivoted members 139 is an operating member 141. The operating members 141 may be operated either in accordance With the depression of the character keys 25 or the perforationsin a previously perforated tape.

The mechanism for operating the members 141 due to the depression of the character keys will new be described. As shown in Figs. 2 and 4- each of the connecting links 29 is fastened to a pivoted link by means of a member 142. rlhe pivoted link 113 has secured at its other end a link 1st carrying pin 1115 Fig. 14 which is adapted to engage slot in the member 1&1. When any of the selecting bars 26 is moved7 a corresponding movement of the link 29 results, thus causing through the linkage arrangement justdescribed the movement of the member 141 and in consequence the movement of the pivoted member 139. 1t should also be noted at this point that when any one of the character keys 25 is depressed. the bar common to the selecting bars 26 is operated for causingl the movement of the arm 86 through the link 123, plunger 122 and links and 121 for causing the movement of the stop 79 out of the path of the arm 76. Thus on each depression of the character keys the shaft 105 will be set in rotation for transmitting the impulses in accordance with the selection of the members 131 duc to the positioning ofr pivote:` members 139. Such an arrangement peri' its of almost free keyboard, that is, the keyboard may be operated at practically any speed Without causing mutilation of the signals. rlhis is due to the fact that the signals are stored mechanically due to the positioning of the respective members of the mechanism C.

1n order to permit the mechanism to be changed from either direct keyboard operation or tape seaiding7 mechanism is provided for effecting this change over. This mechanism comprises a rod 149 which lits into a bifurcateo portion of each of the members lill and which is secured to eccent-ric like members 150. The eccentric like members 159 are secured to a shaft 151 which is supported by suitable bearings formed in the enclosing housing 81 and which has secured 'thereto a thumbnut 152. By rotating the thumb nut 152 the shaft.- 151 may be rotated for ca using the movement of the members 1111 so that they are disconnected from the linkage arrangement connecting these niembers with the keyboard mechanism and placed under the control of the perforations in a previously perforatec tape 62.

rlChe selection of the members 1-11 may also be brought about by members which are controlled by the perforations in a preof the sliding members 155 is provided with a slot intermediate its ends for engaging one end of a bell crank lever 157. The other end of the bell crank lever 157 carries a pin 158 which engages a slot in the member 141. Each of the bell crank levers 157 is rotatably secured to a shaft 159 and is rotated with the shaft 159 under the tension of a spring 160. lVhen, however, any of the sliding members 155 are in a depressed position because of the fact that their pins 156 have encountered an unpunched portion of the tape 62, the members 155 are not elevated and the corresponding bell crank levers 157 are held by their springs 160 so that menlber 141 is in a position opposite to that shown in Fig. S.

In order to selectively change the position of the members 131 it is necessary to depress` all of the bell crank levers 157 together With the slid-able members 155 against the tension of the springs 160 so that the ends of the pin 156 will come belou7 the tape 62. rlhis movement is accomplishel by providino` a bail 161 which extends between a pair or brackets 162 and 163 carried by shaft 159. T he shaft 159 is arranged to be rocked once for each revolution of the shaft 105 by means of a suitable linkage arrangement which is best shown in Figs. 2, 3 and 7. is shown in these figures there is provided a bell Crank lever 163 on the free end of which there is secured a roller 164 and which has secured to its opposite end a link 165. The link 165 is secured to an arm 166 in turn carried by a shaft 168 which is concentric With shaft 159. The shaft 168 is adapted to be connected to shaft 159 through a. suit-able clutch as Will later be described. r1`here is also fastened on the shaft 105 a cam 167 Which is spaced with reference to the cams 10S so that it engages the roller 164e just following the engagement of the last of the cams 103. TWhen the enlarged portion of the cam 167 engages the roller 164, the shaft 168 together with the shaft 159 Will be rocked thus causing the movement of the bail 161 and the Withdrawal of the pins 156 which have protruded through a perforation in the tape 62. Those of the members 155, however before Whose pins 156 no perforations appear are held down by the tape and the corresponding members 141 remain in their unselected position.

rthe rotation of shaft 159 also causes the advancement of the tape 62. Secured to the shaft 159 is a lateral extension 170 which has pivotally secured to its free end an adjustable link 171 as is sh wn in Figs. 12 and 13. At the lower end of the lim; 171 is secured a lever 172 which is adapted to reciprocate a member 173 between the bear-` ing surfaces of a guide 1711. The upper end of the member 17 3 has pivotally secured thereto an actuating paWl 175. The actuating pawl 175 is secured to the member 173 by means of a pivot 176 which is provided with a spring 177 as shown in Fig. 4. The pawl 175 is adapted when elevated to engage the teeth of a ratchet wheelk 178 mounted fast on a shaft 179 Fig. 2 having bearings in portions 180 and 181. During the upward movement of the link 171 due to the rotation of the extension 170, the link pivoted member 172 is likewise moved. The pawl 175 engages the next succeeding tooth in the ratchet wheel 178. The resiliency of spring 177 allows the pawl 175 to be drawn over the teeth of the ratchet wheel 178 in a reverse direction without causing a backward rotation of the ratchet wheel and shaft. The shaft is steadied and its action is made. more posit-ive and reliable by means of a jockey which consists of a roller 182, pivot lever 183 and spring 184, Fig. 4. The shaft 179 carries, in addition to the ratchet wheel 178, a stationary rotatable tape feeding wheel 185 in the circu1nference of which are pins 186 adapted to engage perforations in the tape 62. It is evident from the foregoing description that the rotation of the shaft 159 and the corresponding movement of the extension 170 will cause the rotation of shaft 179 and consequently the rotation of the tape feeding Wheel 185 whose pins 186 engage the feed holes in the previously perforated tape 62 to advance the tape from character' to character. The relation of the extension 170 and the bail 161 on the shaft 159 is such that the ,feed wheel is not rotated until inembers 155 have been sufficiently depressed to carry the pins 156 below the tape.

Referring now for the moment to Fig. 2%, a. hinged guide 187 is provided with openings into which the pins 156 may project; and a spring catch 188. lVhen a tape is being placed into position the catch 188 is unlocked and the guide 187 is elevated. During the operation of the transmitter, the guide 187 is lowered as shown in Fig. 3 with the catch 188 engaging the edges of an opening in the top of the enclosing housing. In this position, the guide 187 not only guides the tape but prevents the pins 156, before which no openings in the tape are presented, from lifting the tape enough to nterfere with the proper operation of the mechanism. f

lV'hen the mechanism C is used for transmitting the impulses directly in accordance with the setting of selecting members 26, it is necessary in addition to operating the knurled. nut 152 to associate members 141 with the linkage arrangement extending to the keyboard selecting mechanism to rotate knurled nut 190. This knurled nut is fastened to a shaft 191 (Fig. 7) on which there is mounted a vertical extension 192. The extension 192 has one end bifurcated in rezan/ie which fitted a part 193 forming a part of a clutch coupling between shaftsV 159 and 168 and which is secured to the latter shaft. Part 193 may be caused to engage a similar part 194 carried by shaft 159, depending on the rotation of the knurled nut 190. By disengaging the parts of the clutch, cam 167 becomes ineffective and shaft 159 is not rotated, so that the members 155 are held depressed and a consequence is the non-advancement of the tape.V

lVhen the mechanism C is not in use, the parts of the clutch 76 and 77 may be disengaged and in consequence the members 155 are held in a depressed position by means of the i'nanually actuated knurled nut 126.' This knurled nut 126, as shown in Figs. 2 and` 3, is outside of the enclosing housing and serves when rotated to cause the movement of the stop 79 in the path of the arm 78 carried by the member 77 so that when this arm engages the roller 92, the part 77 of the clutch will be cammed out of engagement with the part 76 and the-shaft 105 arrested.

Mechanism is also provided for stopping the feeding of the tape 62 in case the perforating operator fails to keep up with the transmitter. eferring now for the moment to Figs. 2, 3 and 9, the mechanism necessary for accomplishing this articular feature will now be described. Xtending through the enclosing housing is a pivoted arm 197 which has one end bent so that it lies between the perforator B and the mechanism C in a manner such that it will be operated whenever the tape becomes tensioned and which has fastened to its other end a link 198. Pedestal 84 has pivoted thereto a lever 199, one end of which is fastened to link 198 while the other end is adapted to be moved into the path of an irregular cut groove in member 200, slidably mounted on shaft 105. To member 200 is attached the drum 169 and cam 167'. Now, whenever, the tape 62 becomes tensioned sufficiently to move arm 197, lever 199 is rotated for bringing its free end in the pat-h of the groove inmember 200. As the member 200 continues to be rota-ted with shaft 105, this member will be cammed under the action of spring 201 so that cam 167 does not engage roller 164 and in consequence shaft 159 is not rocked. once for each revolution of shaft 105. Since shaft 159 is not rocked, the members 155 remain in a depressed position and the tape advancement mechanism is rendered ineffective. In order not to cause any mutilation of the impulses due to the stopping of the sending in the manner just described, the groove of member 200 is so cut that the camming action occurs just following the enga-gement of fifth cam 103 with its associated roller 102.

The mechanism C is also equipped with automatic control apparatus. Mounted in suitable bearings in pedestals 205 and 206 is a shaft 207 carrying a plurality ot cams 208, 209, 210, 211 and 212, pinion 213, and an escapement wheel 214. The cams 208 to 212, inclusive, are adapted to cooperate with levers 215, 216, 217, 218 and 219, which are each under the tension of springs such as 220 (Fig. 8) and which extend beneath each ot the members 131. Each of the cams 208 to 212 is equipped with various number ot teeth in order to send a predetermined series of impulses, as will be explained later. The shaft 207 is driven by means of a spring motor ot an ordinary type comprising, as shown in Fig. 7 a pinion 213 mounted on shaft 207 a. gear wheel 223 rotatable on a shaft 224, and a spring 225. Located outside the enclosing housing and secured to a shaft 222 (Figs. 3, 7 and 11) is a manually operating setting' device 226. rlhis device is preferably in the form of a sector provided with finger openings 227 whereby a ready means is provided tor rotating shaft 222 in opposition to spring 225. Insertion ot the linger in one of these openings and the movement ot' sector 226 in the direction of the arrow until the finger engages a stop 228, results in the winding of spring 225 an amount dependent on the angle through which the sector 226 was rotated. Also secured to shaft 222 is a gea-r 234 having its teeth meshed with the teeth of a gear carried by shaft 224. Shaft 224 also carries a bracket 236 in the free end of which there is pivoted a pawl 237 adapted to en gage the teeth ot the atchet wheel 238. As is shown in Fig. 11 ratchet wheel 238 secured to gear 223. lV hen the sector 226 is rotated the pawl 237 is caused to engage a tooth in ratchet wheel 238 and upon the release of the sector 226 the energy stored -in srrino 226 :is imaarted to gear 223 through the pawl 237 and ratchet wheel 238. By means oit the ditlerent finger opening" the sector may bc rotated through various angles so that the .number of times the same combination ot impulses is transmitted may be varied.

in order that the tape transmitting niechanism will be ineffective during ,the operation ot the automatic control apparatus, an arin 229 is mounted on shaft 224. Then the sector 226 is rotated, a pivoted lever 230 released by arm 229 which is a part of bracket 236 whereby its free end is moved into the groove termed in member 200 by spring 239 after the 5th' cam 103 has en gaged the roller 102. Thus, cam 167 is moved along the shaft 105 and the tape advancing mechanism rendered ineffective, due to the fact that the cam 167 no longer engages roller 164.

It is necessary to regulate the speed at which shaft 207 is rotated through the action of spring 225 and the gear 223 and in order to do this a cam 232 is mounted on shaft 105, F ig. 10. Cam 232 acts on anchor 233 which extends to escapeinent wheel 214 and which, 'for each revolution of shaft 105, causes the advancement of the shaft 207 a distance equal to the space oi one tooth o1 the escapement wheel 214.

Referring now more particularly to Figs. 2, 3 and 8, the method ot operation ot the mechanism will now be described. rl'he positions ot the selecting' members 155 are determined by the perfor-ations in the tape and they in turn determine the positions ot mehr hers 141, which control the setting ot levers 139. As the shaft 105 with the drum 104 on which are mounted cams 103 is rotated, the pivoted members 131 are moved so that pin 135 engages either grooves 106 or 107, whereupon the rods 130 are positioned .in accordance with the signal desired to be transmitted. Consequently, the arms 117 are moved for positioning the rollers 102 out of the path of the cams 103, depending` on whether member 131 is selected. New as the cams 103 are rotated, they successively engage the rollers 102, unless the rollers are moved out ot their path, thereby causing the rocking ot shaft 89, which moves arm in accordance with the selection, and in consequence the transmission to line, oit impulses corrcsponding to the pertorations in the tape.

Il' now itbecomes desirable to signal thc Y operator at a distant station at which a receiving printer is located, a linger is inserted in one of the linger holes in sector 226 and the sector is moved until the stop 228 is cncountered, whereupon the sector is released. The rotation ot sector 226 has turned shaft 224 and in consequence caused pawl 237 to engage a tooth on ratchet wheel 238 and wound spring 225 the required amount and has moved arm 220 so that lever 230 is allowed to engage the groove in member 200 so that cam 167 is moved out ot the path of roller 164 and the advancement ot tape 62 prevented. Now as cam 232 is rotated, the anchor 233 is operated Yfor permitting the escapement wheel 214 to be advanced one tooth rotating cams 208 to 212, inclusive. As these cams are rotated, members to 219, inclusive according to the distance through which cams 208 to 212 are rotated as determined by the tooth engaged by paul 237 are operated for moving members 131 so that pins 135 engage the grooves 106 or 107 of drum 104. As the drum 104 is rotated, the arm 90 is operated for transmitting a series ot impulses in a manner similar to that previously decribed. The cam 232 again engages anchor 233, allowing the escapement wheel 214 to advance another step and in consequence the transmission of till lil

' station.

said selecting elements, manually operated means also capable of selectively positioning said elements, and means effective following the positioning of said elements for operating said transmitting means in accord-- ance with their positions.

Q. In combination, a plurality of selecting elements, a single transmitting contact, tape controlled means for selectively positioning said selecting elements, manually operated means also capable of selectively positioning said elements, and means for successively operating said contact in accordance with the setting of said selecting elements.

3. In combination, al plurality of selecting elements, a single transmittting contact, tape controlled means for selectively positioning said selecting elements, manually operated means also capable of selectively positioning said elements, means for successively operating said contact in accordance With the setting of said selecting elements, and means for rendering either said tape controlled means or said manually operated means ineffective.

4. In combination, a plurality of selecting elements, a transmitting device, a plurality of mechanisms for selectively positioning said selecting elements comprising tape controlled means, keyboard operated means, and automatically controlled means, and means for operating said transmitting device in accordance with the setting of said selecting element-s as determined by the operation of any one of said means.

5. In combination, a plurality of selecting elements, a single transmitting contact, tape controlled means for controlling the positioning of said elements, manually operated means also capable of positioning said elements, a rotating shaft, and means carried by said shaft and effective for operating saidl contact in accordance With the setting of said elements as determined by either of said means.

6. In a printing telegraph, means for transmitting selecting current impulses comprising a single transmitting contact, a plurality of selecting elements, a perforated tape, means controlled by the tape for operating said selecting elements, a keyboard mechanism also capable of selectively positioning said elements, means for operating aid contact in accordance with the positions of said elements, and means for rendering said selecting elements controllable either.

by said tape controlled means or said keyboard mechanisn'i.

7. In a printing telegraph, means for transmitting selecting elements comprising a. single transmitting contact, a plurality of selecting elements, a perforated tape, means controlled by the tape for operating said selecting elenients, a plurality of cams for operating said contact in accordance with the positioning of said elements, a keyboard mechanism also capable of selectively positioning said elements, and means for rendering said selecting elements controllable either by said tape controlled means or said `keyboard mechanism.

S. In a printing telegraph, means for transmitting selecting current impulses comprising a single transmitting contact, a plurality of selecting elements, a perforated tape, means controlled by the perforations in the tape for operating said selecting elements, a second set of elements directly controlling the positioning of said other set of elements, akeyboard mechanism, aplurality of selecting members associated therewith, means for associatingsaid second set of elements with either said tape controlled means or said selecting members, and means for operating said contact in accordance with the setting of the first recited elements as determined by either said tape controlled means or said keyboard mechanism.

9. In a printing telegraph, means for transmitting selecting current impulses comprising a single trz'insmitting contact, a perforated tape, n'ieans controlled by said tape for operating said contact in accordance with the perfor-ations in said tape, a manually movable member, means controlled by said .manually movable member for also operating said first recited means toeffect the transmission of impulses through the operation of said second recited means.

10. In a printing telegraph, means for transmitting selecting current impulses comprising a single transmitting contact, a perforated tape, means controlled by said tape for operating said contact in accordance With the perforations in said tape, a manually movable member, a plurality of members arranged to selectively position said second recited means.` and cams actuated by said manually movable member for actuating said members.

1l. In a printing telegraph, means for transmitting selecting current impulses comprising a single transmitting contact, a perforated tape, means controlled by said tape, means for operating said contact in accordance with said means, a manually movable i se member, a plurality of members arranged to selectively position said second recited means, cams actuated by said manually movable member for actuating said members, and means controlled by said second recited means for permitting the rotation of said cams and in consequence the actuation of said members.

12. In a printing telegraph, means for transmitting selecting impulses comprising a single transmitting contact, a plurality of selecting elements, a perforated tape, means controlled by the perforations in the tape for operating said selecting elements, a rotat- 1. ing member having a plurality of grooves,

a plurality of cams having different angular positions carried by said rotating member, means controlled by said selecting elements and caused to engage one of said grooves when selected, and means operated upon the continued rotation ot said member due to the engagement of said means with one of said grooves for selectively operating said Contact in accordance With the position of said selecting elements.

In Witness whereof, I hereunto subscribe my name this 17th day of December, A. D. 1923.

HARRY PFANNENSTIEHL.

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