US3163261A - Carriage decelerating mechanism for telegraph page printers - Google Patents

Carriage decelerating mechanism for telegraph page printers Download PDF

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Publication number
US3163261A
US3163261A US230549A US23054962A US3163261A US 3163261 A US3163261 A US 3163261A US 230549 A US230549 A US 230549A US 23054962 A US23054962 A US 23054962A US 3163261 A US3163261 A US 3163261A
Authority
US
United States
Prior art keywords
dashpot
plunger
elements
casting
cylinder
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
Application number
US230549A
Other languages
English (en)
Inventor
Sim Gordon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Teletype Corp
Original Assignee
Teletype Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DESCH65313D priority Critical patent/DE398681C/de
Priority to BE638610D priority patent/BE638610A/xx
Priority to NL298250D priority patent/NL298250A/xx
Priority to US230549A priority patent/US3163261A/en
Application filed by Teletype Corp filed Critical Teletype Corp
Priority to GB37887/63A priority patent/GB1041068A/en
Priority to CH1218963A priority patent/CH398681A/fr
Priority to FR949676A priority patent/FR1385427A/fr
Priority to DET24861A priority patent/DE1188122B/de
Priority to SE11117/63A priority patent/SE310372B/xx
Application granted granted Critical
Publication of US3163261A publication Critical patent/US3163261A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/04—Sound-deadening or shock-absorbing devices or measures therein
    • B41J19/10—Dash-pots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/18—Tracks
    • B62D55/20—Tracks of articulated type, e.g. chains
    • B62D55/22—Arrangements for preventing or modifying back-flexing
    • 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
    • H04L13/18—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of receivers
    • 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
    • H04L13/18—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of receivers
    • H04L13/186—Page printing; tabulating

Definitions

  • Another object of the invention is to provide a deceleration piston and cylinder arrangement which is selfaligning.
  • a carriage decelerating mechanism is provided which is particularly useful in a page printer of the type disclosed in the copending application of W. J. Zenner, Serial No. 159,330, filed December 14, 1961.
  • the disclosure of this copending application is incorporated herein as though reproduced completely in this application to facilitate an understanding of the construction and operation of the mechanism of the present invention.
  • a printing telegraph page printer of the 'type wherein a non-reciprocal but rotary platen is used and wherein printing is effected by a type wheel which is carried by a carriage to traverse the length of the platen to effect spacing of the characters printed in a line on paper carried by the platen.
  • the type wheel and its cooperating positioning mechanism are carried on a casting to which there is attached a piston which, according to the present invention, may move radially of its axis to a relatively large extent to achieve alignment with a stationary dashpot cylinder.
  • the dashpot cylinder is mounted on the framework of the printer in a fixed position and the piston is attached to the casting so that it cannot move axially with respect to the casing but may move radially with respect to the casting to align itself with the dashpot cylinder.
  • the piston is frictionally engaged with the casting so that it will tend to remain in any radial position to which it is moved with respect to the casting.
  • FIG. 1 is a fragmentary elevational view partly in section and partly in front elevation of a printing telegraph page printer including the deceleration mechanism of the present invention
  • FIG. 2 is a sectional view taken through the piston and dashpot cylinder and througha portion of the casting to which the piston is attached;
  • FIG. 3 is an end view ofthe dashpot cylinder taken substantially along the line 3-3 of FIG. 1 in the direction of the arrows, and
  • a casting 145 supports the type wheel mechanism and is moved step-by-step across the printer to associate a type wheel 186 with succeeding areas of a web of paper on a platen 271.
  • casting 145 is supported on a guide rod 146 and is stepped ing 145 and the mechanism supported thereon, including a print hammer 293, move across the platen 271.
  • driving pawl 467 which is actuated each time the printing telegraph apparatus receives either a character printing or a spacing code combination, serves to drive the ratchet 466 and the ratchet 466 will be retained in its advanced position by a detent pawl 468.
  • These mechanisms serve to step the casting 145 to the right as viewed in FIG. 1 against the tension of a coilspring 488.
  • This coil spring 488 has the end of its upper course hooked over a stud 489 mounted on the casting 145 and the coil spring 488 has the right end of its lower course attached to a suitable portion of the framework.
  • the spring passes around a guide roller 491 which is freely rotatable about,
  • a stud shaft 492 that. also supports a space function restoring lever 493.
  • a pawl release lever 480 Upon receipt in the apparatus of a code signal calling for a carriage return operation a pawl release lever 480 will be actuated, as described in detail in the aforementioned copending application of W. J. Zenner, todisengage the driving pawl 467 and the 'detent pawl 468 from the teeth of the ratchet 466.
  • the pawl release lever 480 will be latched in its actuated position to permit the coil spring488 to return the casting '145 to its extreme left-hand position, at which point thecasting will strike the space function restoring lever 493' to re store the driving pawl 467 and detent pawl 468 to operating relationship with the ratchet 466. 7
  • FIG. 4 is a vertical sectional view taken substantially along the line 4-4 of FIG. 1 in the direction of the arratus the casting will be moved step-by-step to the right (FIG. 1) being guided by guide rollers 152 and which are mounted on extensions 153 and156 and which ride on the guide rod 146.
  • This movement of the casting 145 to the right will stretch the coil springs 488 to store energy in it for restoring casting 145 and the mechanism on it to the left-hand position when a carriage return signal is received in the apparatus.
  • the platen 271 is supported for rotation in a platen supporting plate 432 and a cooperating platen supportmg plate (not shown).
  • the plate 432 is supported by a bracket 434 that is in turn suitably-mounted on a side 1 plate 149 of the apparatus.
  • the side plate 149 also sup ports a dashpot cylinder 10 for cooperation with a piston or plunger 11 which is mounted on the casting 145.
  • The' dashpot cylinder 10 has a cylindrical wall portion 12 that is tapered at its right end as shown at 13(FIG. 2) 1 and has a base portion 14 in which there is formed an exhaust port 15.
  • the effective size of the 'exhaustport 15 maybe controlled by a lever 16 which is pivoted on the shank of aretaining screw 17 threaded into the base portion 14. After the lever '16 has been moved to adjust.
  • the lever 16 may be locked in place 'by tightening the retaining screw .17.
  • the dashpot cylinder 10 has cooperating'with it the plunger or piston-11 which comprises a cylindrical cupshaped member 18 having a ridge 19 formed on its base as shown. in FIGS. 2 and'4.
  • a soft rubber disc 20 is forced into the cupkshaped member 18' and 'is-p'rovided with a recess 21 into which a projecting portion of a" 3,163,261 Patented Dec, 29, 1964 3 stud 22 extends.
  • This stud 22 is formed integrally with the casting 145.
  • the base of the cup-shaped member 18 has a relatively large hole 23 formed in it through which the stud 22 extends.
  • the casting 145 has three arms 24, 25 and 26 formed on it, on which the ridge 19 rides.
  • the cup-shaped member 18 is held with its ridge 19 in engagement with the arms 24, 25 and 26 by a coiled spring 27 which surrounds the stud 22 and is interposed between a cup-shaped washer 28. and a flat washer 29.
  • the flat washer 29 surrounds and slidingly engages the stud 22 and the cup-shaped washer 28 is slidable on the stud 22 but is retained in the position shown by a clip 36 which is a Washer with a slot cut in it for engaging the peripheral surface of an annular groove 31 formed adjacent the left-hand of the stud 22.
  • the cup-shaped member 18 which has a peripherally extending taper 32 formed on it, will be resiliently held against the arms 24, 25 and 26 by the'pressure of the spring 27 and will remain in any position to which it is moved within the limits of the size of the hole 23 and the diameter-of the projecting portion or stud 22.
  • the cup-shaped member 18 is formed. to an outside diameter a few thousandths of an inch less than theinside diameter of the cylindrical wall portion 12 of the dashpot cylinder 10.
  • the spring 488 will move the casting 145 to the left (FIG. 1) and into the position shown in FIG. 2.
  • the casting 145 in returning to the left will move the plunger 11 with it and in entering the dashpot cylinder the taper 32 formed on the cup with the dashpot cylinder 10. This will move the plunger to approximately the position shown in FIG. 2 where the plunger will be retained by the pressure of the spring 27.
  • the automatic centering of the plunger 11 with the dashpot cylinder 10 will not require a great amount of movement of the plunger 11 with respect to the casting 145.
  • vibrations of the printer in its normal oper-' ation cause the plunger 11 to shift, in spite of the pressure of the spring 27 forcing the ridge 19 against the surfaces of the arms 24, 25 and .26, the plunger llwill center itself with respect to the dashpot cylinder 10.
  • the clearance between the wall 220 and outer-surface of the cup-shaped member 11 will restrict the'flow of air out of the dashpot 10 and in cooperation with the port 15, whose opening has been: adjusted by manipulating the lever 16, will decelerate the movement of the casting 145 as is usual in such devices. If the type carriage. including the casting 145 is moved only a short distanceto the. right (FIG. 1) to withdraw the plunger 11 only a short distance out of the dashpot cylinder 10 the decelerating effect of the restricted port and clearance between the wall 12and cup-shaped member 18 will, of course, be decreased but in like manner the pressure spring 488 will also be decreased. When 4 a short movement to the right has been imparted to the casting and then a carriage return signal is received in the apparatus, the soft rubber disc 20 will serve to cushion the shock of the carriage return operation.
  • a decelerating mechanism for dampening the return shock between a pair of relatively movable elements that are moved apart under power and returned under spring pressure comprising a dashpot plunger member on one of said elements and a dashpot cylinder member on the other of said elements, cooperative tapered surfaces on said dashpot members for camming said members into 'axial alignment with respect to each other, means for fixing one of said members on one of said elements, and friction means on the other of said elements tending to hold the other of said members in any adjusted position on the other element to which said other member is moved by the elements being returned under spring pressure to move the dashpot plunger member into the dashpot cylinder member whereby the'cooperating tapered surfaces on said members will cam the other of said members into substantially axial alignment with said one member.
  • a decelerating mechanism for dampening the return shock between a pair of relatively movable elements that are moved apart under power and returned under spring pressure comprising a dashpot plunger on one of said elements and a dashpot cylinder on the other of said elements, cooperating tapered surfaces on said dashpot cylinder and said dashpot plunger for camming the dashpot plunger into axial alignment with .the dashpot cylinder, means for fixing the dashpot cylinder on one of said elements, and friction means on the other element frictionally clamping the dashpot plunger on the other element and tending to hold the dashpot plunger in an adjusted position with respect to the other element whereby when the dashpot plunger is not axially aligned with the dashpot cylinder, the cooperating tapered surfaces on the dashpot cylinengagement with the arms including a spring encircling the stud, a washer encircling the hole and hearing against the plunger, and means on the stud for holding the spring under compression between the stud and the
  • a decelerating mechanism for dampening the return shock between a pair of relatively movable elements that are moved apart under power and returned under spring pressure comprising a dashpot plunger on one of said elements and a dashpot cylinder on the other of said elements, cooperating tapered surfaces on said dashpot cylinder and said dashpot plunger for carnming the dashpot plunger into axial alignment with the dashpot cylinder, means for fixing the dashpot cylinder on one of said elements, and friction means on the other element frictionally clamping the dashpot plunger on the other element and tending to hold it in an adjusted position with respect to the other element whereby when the dashpot plungeris not exactly axially aligned with the dashpot cylinder the coeperating tapered surfaces on the dashpot cylinder and d'ashpot plunger will shift the dashpot plunger with respect to the element on which it is frictionally clamped to substantial uial alignment with the dashpot cylinder when said elements are returned by said spring prccess

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Braking Arrangements (AREA)
US230549A 1962-10-15 1962-10-15 Carriage decelerating mechanism for telegraph page printers Expired - Lifetime US3163261A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DESCH65313D DE398681C (de) 1962-10-15 Gleiskette fuer Kraftfahrzeuge
BE638610D BE638610A (fr) 1962-10-15
NL298250D NL298250A (fr) 1962-10-15
US230549A US3163261A (en) 1962-10-15 1962-10-15 Carriage decelerating mechanism for telegraph page printers
GB37887/63A GB1041068A (en) 1962-10-15 1963-09-20 Carriage decelerating mechanism for telegraph page printers
CH1218963A CH398681A (fr) 1962-10-15 1963-10-03 Mécanisme de freinage du chariot d'un appareil de transmission télégraphique imprimeur
FR949676A FR1385427A (fr) 1962-10-15 1963-10-04 Mécanisme ralentisseur pour chariot de télescripteur
DET24861A DE1188122B (de) 1962-10-15 1963-10-09 Wagenruecklaufbremse fuer Fernschreibmaschinen mit einem Daempfungszylinder
SE11117/63A SE310372B (fr) 1962-10-15 1963-10-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US230549A US3163261A (en) 1962-10-15 1962-10-15 Carriage decelerating mechanism for telegraph page printers

Publications (1)

Publication Number Publication Date
US3163261A true US3163261A (en) 1964-12-29

Family

ID=22865638

Family Applications (1)

Application Number Title Priority Date Filing Date
US230549A Expired - Lifetime US3163261A (en) 1962-10-15 1962-10-15 Carriage decelerating mechanism for telegraph page printers

Country Status (8)

Country Link
US (1) US3163261A (fr)
BE (1) BE638610A (fr)
CH (1) CH398681A (fr)
DE (1) DE1188122B (fr)
FR (1) FR1385427A (fr)
GB (1) GB1041068A (fr)
NL (1) NL298250A (fr)
SE (1) SE310372B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960250A (en) * 1975-04-14 1976-06-01 Teletype Corporation Skirted dashpot piston

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB263298A (en) * 1925-12-18 1926-12-30 George Ellison Improvements relating to time lag devices of the dash pot type
US1979510A (en) * 1932-04-06 1934-11-06 Financial Press Companies Of A Telegraphic printing mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB263298A (en) * 1925-12-18 1926-12-30 George Ellison Improvements relating to time lag devices of the dash pot type
US1979510A (en) * 1932-04-06 1934-11-06 Financial Press Companies Of A Telegraphic printing mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960250A (en) * 1975-04-14 1976-06-01 Teletype Corporation Skirted dashpot piston

Also Published As

Publication number Publication date
GB1041068A (en) 1966-09-01
DE1188122B (de) 1965-03-04
BE638610A (fr)
CH398681A (fr) 1966-03-15
FR1385427A (fr) 1965-01-15
NL298250A (fr) 1965-11-26
SE310372B (fr) 1969-04-28

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