US2505008A - Printing telegraph receiver - Google Patents
Printing telegraph receiver Download PDFInfo
- Publication number
- US2505008A US2505008A US715904A US71590446A US2505008A US 2505008 A US2505008 A US 2505008A US 715904 A US715904 A US 715904A US 71590446 A US71590446 A US 71590446A US 2505008 A US2505008 A US 2505008A
- Authority
- US
- United States
- Prior art keywords
- cam
- lever
- lug
- arm
- starting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
- H04L13/02—Details not particular to receiver or transmitter
- H04L13/04—Driving mechanisms; Clutches
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
- H04L17/16—Apparatus or circuits at the receiving end
- H04L17/18—Code selection mechanisms
Definitions
- a printing telegraph receiver comprising'a mag-i net, an armature therefor, a driving shaft, a selector cam and a starting cam both arranged coaxiaiiy with said drivipglshaft-a friction' clutch for K driving said starting cami'romsaid driving shaft, a ratchet clutch ⁇ for f'driving' said selector cam from said' driving shaft', a'detent'for liol'dingsaid starting cam in" an 'j invariable stopvk position"l against'rotation, Ymeansfor releasing engagement"v of saiddetent from said starting'cam uponjthe' response of" said arniaturetofthe start element of a signal, a lug on saidstarting'cam, a"member ⁇ mounted in the path' of said lugfm'anua'lly operable means for adjustingtheiriositionbisaidE member in a path coaxial with said starting'cam"
- Fig. l shows the.. cam shaft of the machine described in said U. 'SL' Patent No.f"l,639,213 with the modifications according to the presentinven-' tion.
- Fig. 2 is an end View 'of'Figgd looking inthe direction of the arrow,'fan d of the'starting'mechal' nism according to "thev presentA invention.
- Fig. ⁇ '7V showsv the arrangement for releasing thel ratchet clutch.
- Fig. 8 is a perspective View 'of 'theo-rientation device andof'the starting'mechanism according to the presentinvention.
- FIG. 1 shows the cam assembly for the ⁇ machine described vin saidV Patent 1,639,213.
- the machine includes 'the driving spindleior shaft l for the cam assembly which is mounted in plainbearingsS.
- the cam assembly 2 carries afcam groove '4 'Whichf-'actuates' a striker' pin (not shown) and which is 'hereinafter referred to as a selector cam, since' the instants atwhich the striker pin is actuateddetermine the'selector action and these instants ought to occur at the middle of eachcodeelement ofithe signai combi" nation
- the camassembly 2 v also carries other cams for determining the traversing ofthe strikerl pin and for performing other functions, ibut'as these operations are'fully described in the above mentioned specification and are not ⁇ necessary'to an understanding,of;the ⁇ present invention, theyneed not be described hereinj rlhe shaft I is co-nf tinuously ⁇ driven during the ⁇ operation ofthe machine by means ofa gear wheel 5.
- TheV shait I passes coaxially through the cam assembly V and carries ratchetV Wheei'sn for cooperation with pawis 7 (Fig. 7*) lpivotally carried at la by the cam detent lever I4 in place.
- ratchet clutch between the shaft I and the cam :assembly 2.
- the ratchet clutch is held inoperative until the proper moment by means of a detent 8 (Fig. 7) which holds the pawls 1 out of engagement with the ratchet wheels 6.
- An extension of the shaft I beyond the driving gear wheel and one of the bearings 3 carries a friction clutch 9 driving a disc I6 having on its outer edge two lugs II and I2 bent over in opposite directions.
- One lug II co-operates with one arm I3, Fig. 2, of a detent lever I4 pivoted at I5.
- the other arm I6 of the lever I4 is engaged by a retaining lever I1 urged by a spring I8 towards the arm I6.
- the retaining lever I1 thus holds lever I4, against the pull of a spring I9, with arm I3 holding cam disc I0 against rotation.
- the retaining lever I1 is adapted to be withdrawn from engagement with arm I6 of detent lever I4 by a latch member 26 attached to a hub- 2I pivotally mounted in an arm 22.
- Arm 22 is attached to the rock shaft 23 that carries the striker pin guides, and is denoted by reference character 1 in Fig. 1 of said Patent 1,639,213.
- This rock shaft 23 carries a second arm 24 connected by a link 25 to the armature 26 of the operating magnet 26a.
- the latch 2t is normally held in engagement with the retaining lever I1 by a spring blade 21 mounted on arm I6 of detent lever I4.
- a step 28 formed on arm I6 holds the spring blade 21 so that it does not normally press against latch 20 so that the latch 26 is free to move without friction.
- the cam disc I6 rotates in the direction of the arrow in Fig. 2 and towards the end of rotation thereof lug I2 thereon engages a roller 29 r pivoted on pivot 23a carried by arm I3 of lever I4 and thereby rotates lever I4 in a clockwise direction, so that the end of arm I3 is brought into the path of lug II and arm I6 is again engaged by retaining lever I1 which is moved clockwise against spring I8 until the end thereof snaps over the end of arm I6 and thus holds Latch 2li is again brought into engagement with retaining lever I1.
- armature 26 If at this moment armature 26 is in its right hand spring position, the latch 26 will be brought down on top of retaining lever I1 and spring blade 21 will be slightly deected. When the armature 26 nally moves to the left hand (stop) position the latch 26 will spring down under the influence of the spring blade 21 to be ready again to withdraw the retaining lever when the next start element is received.
- the lug I2 also co-operates with a roller 30 pivoted on pivot 30a (Fignl) carried by a level. ⁇
- a frame 32 carried by a frame 32.
- the frame 32 is slidable over an arcuate portion 33 of the xed framework of the machine so as to move the roller 30 coaxially of the cam disc I0.
- frame 32 is provided with a knob 34 which can be readily grasped by the hand.
- the knob 34 is provided with a screwed shank 35 which screws into the portion 33 of the framework. To move the frame 32, the knob 34 is rotated to unscrew the shank 35 from engagement with the portion 33 of the fixed framework.
- the frame 32 carries a pointer 36 and the portion 33 of the framework a graduated scale4 31 cooperating therewith.
- roller 38 Fig. 6 Mounted on the same pivot with the roller 36 is another roller 38 Fig. 6 that cooperates Vwith a lever 33 mounted on a spindle 46 journalled in Xed bearings mounted on the base of the machine.
- Lever 39 is urged by spring 4
- a detent lever 42 mounted on the other end of spindle 46 is a detent lever 42 connected by a link 43. to the detent lever 44 that is normally holding pawls 1 out of engagement with ratchet wheels 6 against the pressure of their associated spring 44a.
- Fig. 8 shows in perspective the orientation device and the starting device with each essential element of the device shown in relation to each of the other elements thereof.
- the same character numerals used in Figs. 1 through 7 are used to identify similar elements in Fig. 8.
- the timing of all the cams can thus be suitably advanced.
- cam disc I0 Towards the end of the period of rotation of cam disc I0 the lug I2 thereon operates on roller 29 to restore detent lever I4 into position to co-operate with lug II thereon and cam disc I6 is accordingly :ce-arrested in its invariable stopping position.
- Printing telegraph receiver comprising a magnet, an armature therefor, a driving shaft, a selector cam and a starting cam both arranged r coaxially with said driving shaft, a friction clutch for driving said starting cam from said driving shaft, a ratchet clutch for driving said selector cam from said driving shaft, a, detent for holding said starting cam in an invariable stop position against rotation, means for releasing engagement oi said detent from said starting cam upon the response of said armature to the start element oi a signal, a lug on said starting cam, a inember mounted in the path of said lug, manually operable means for adjusting the position oi said member in a path coaxial with said starting cam and means operable upon the coaction of said lug with said member to cause engagement of said ratchet clutch.
- Printing telegraph receiver as claimed in claim 1 comprising a detent lever for holding said ratchet clutch disengaged and a lever lixed thereto and arranged to be operated by engagement of said lug with said member, said last mentioned lever having a curved portion with its centre of curvature lying upon the axis of said driving shaft and said starting cam.
- the detent cooperating with said lug consists of a two-armed lever, one arm cooperating with said lug to hold said starting cam in stopped position and the second arm cooperating with said second lug immediately prior to the said starting cam reaching stop position to restore said rst arm into position to arrest said starting cam, a spring for removing said detent lever from engagement with said lug, a springactuated retaining lever cooperating with said second arm to hold said detent lever in position to arrest said starting cam, and a latch controlled by said armature for withdrawing said retaining lever from said detent lever upon the response of said armature to the starting element of a signal.
- the detent cooperating with said lug consists of a two-armed lever, one arm cooperating with said lug to hold said starting cam in stop position, and the second arm cooperating with said second lug immediately prior to the said starting cam reaching said stop position to restore said rst arm into the position to arrest said starting cam, a spring for removing said detent lever from engagement with said lug, a spring-actuated retaining lever cooperating with said second arm to hold said detent lever in position to arrest said starting cam, a latch controlled by said armature for withdrawing said retaining lever from said detent lever upon the response of said armature to the starting element of the signal, and a spring blade mounted on said second arm to guide said latch to engage the said retaining lever in said withdrawal and to hold said latch clear of said retaining lever during the following code elements of the signal.
- the detent cooperating with said lug consists of a two-armed lever, one arm cooperating with said lug to hold said starting cam in stop position and the second arm cooperating with said second lug immediately prior to the said starting cam reaching stopping position to restore said iirst arm into position to arrest said starting cam, a spring for removing said detent lever from engagement with said lug, a spring-actuated retaining lever cooperating With said arm to hold said detent lever in position to arrest said starting cam, a latch controlled by said armature for withdrawing said retaining lever from said detent lever upon the response of said armature to the start element of the signal, a spring blade mounted on said second arm to guide said latch to engage the said retaining lever in said withdrawal and to hold said latch clear of said retaining lever during the following code elements of the signal, and a step on said second arm to hold said spring co-operating with said lug to hold said starting position of the latch.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mechanical Operated Clutches (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB275629X | 1945-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2505008A true US2505008A (en) | 1950-04-25 |
Family
ID=10261644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US715904A Expired - Lifetime US2505008A (en) | 1945-11-06 | 1946-12-13 | Printing telegraph receiver |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2505008A (el) |
| BE (1) | BE470458A (el) |
| CH (1) | CH275629A (el) |
| FR (1) | FR937089A (el) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2689272A (en) * | 1950-08-31 | 1954-09-14 | Edward E Kleinschmidt | Printing telegraph range adjustment |
| US2754361A (en) * | 1950-10-16 | 1956-07-10 | Kleinschmidt Lab Inc | Selector mechanism |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1924357A (en) * | 1932-03-04 | 1933-08-29 | Creed & Co Ltd | Start-stop telegraph system and apparatus |
| US2115991A (en) * | 1935-12-28 | 1938-05-03 | Teletype Corp | Tape printer |
-
0
- BE BE470458D patent/BE470458A/xx unknown
-
1946
- 1946-10-30 CH CH275629D patent/CH275629A/de unknown
- 1946-10-31 FR FR937089D patent/FR937089A/fr not_active Expired
- 1946-12-13 US US715904A patent/US2505008A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1924357A (en) * | 1932-03-04 | 1933-08-29 | Creed & Co Ltd | Start-stop telegraph system and apparatus |
| US2115991A (en) * | 1935-12-28 | 1938-05-03 | Teletype Corp | Tape printer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2689272A (en) * | 1950-08-31 | 1954-09-14 | Edward E Kleinschmidt | Printing telegraph range adjustment |
| US2802048A (en) * | 1950-08-31 | 1957-08-06 | Edward E Kleinschmidt | Selecting and printing apparatus |
| US2754361A (en) * | 1950-10-16 | 1956-07-10 | Kleinschmidt Lab Inc | Selector mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| BE470458A (el) | |
| FR937089A (fr) | 1948-08-06 |
| CH275629A (de) | 1951-05-31 |
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