US1722439A - Typewriting machine - Google Patents
Typewriting machine Download PDFInfo
- Publication number
- US1722439A US1722439A US226953A US22695327A US1722439A US 1722439 A US1722439 A US 1722439A US 226953 A US226953 A US 226953A US 22695327 A US22695327 A US 22695327A US 1722439 A US1722439 A US 1722439A
- Authority
- US
- United States
- Prior art keywords
- type
- lever
- type bar
- key
- arm
- 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
-
- 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
- B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
- B41J1/08—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies carried on sliding bars or rods
Definitions
- This invention relates to a type action for 5 type bar is provided with a plurality of groups of two type each.
- Each type bar is operated by two key levers for the purpose of selecting the desired type of each group and the platen is shifted in theusual or any '10 desired manner in order to bring it into a position to cooperate with the selected group of types.
- the sliding type bars are actuated by a toggle mechanism which reaches a straight line position at the time of printing so that the actual printing is performed by pressure rather than by impact.
- Means are provided for obtaininga relative adjustment between the normal position of the platen and the type bars in order that the force of the imprint may be varied as may be desired for manifolding.
- One of each pair of keys merely gives the type bar its sliding movement, while the other keynot only gives the'type bar the same sliding movement, but gives a lifting movement to a guide member which supports the type bar in its travel to the printingpoint, thereby lifting the bar into position so that another type of the group is brought to the printing point.
- the type bar is glven 1 its sliding and lifting movements at subtance after the guide has reached the full ex ⁇ stantially the same time but the lifting movement is completed before the type bar reaches the printing point and the connections between the second key lever and the guide which lifts the type bar are such that the key lever may be moved a slight further distent of its movement.
- connections between the key lever and the toggle member in the present embodiment of the invention comprise two bell crank levers with the necessary link connections arul are so arranged that the type bar moves thegreater part of the distance to the printing point during a relatively small part of the movement of the key levers so'thateach type bar recedes from the printing osition very rapidly. upon the release of t e key lever.
- The'intermediate connections are also so arranged'tliat only a very light touch is necessary toproduce the printing movement of the type bar.
- Figure 1 is a side elevation of a single type action with parts in fore and aft section, the full line position denoting the normal position of the parts and the dotted line position denoting the printing position when one of the key levers is depressed.
- Figure 2 is a similar View showing in full lines the position taken by the parts when the other of the key levers which control the same type bar is fully depressed.
- the invention may be embodied in typewriting machines of widely diiferent char acter in other respects,- and for this reason the other instrumentalities of the typewriting machine have not been illustrated. lhere is indicated in platen A which is movable to a second position indicated in dotted lines by any usual or desired form of case shift mechanism.
- Each type bar 1 is mounted to slide and is preferably made in skeleton form for the sake of lightness and is provided with four type a, b, c, and d.
- operation of the type bar will print from one of the type a or d.
- the type bar is given merely its longitudinal movement, the printing impress will be from the type c as indicated in Figure 1 while if the type bar is simultaneously lifted by the depression of the other key which operates the same, the imprint will be from the type d as shown in Figure 2.
- the platen is shifted to the dotted line position an the two key levers control the selection of the types a or b in similar manner.
- Each'type bar is guided on a supporting ,frame member 2 which forms one part of a I 2 at 5 is a plate 6 which extends upwardly and has bent over ears 7 engaging the upper edge of the type bar.
- the projections 4, plate 6' andears- 7 which engage the type bar at a set screw 18.
- a link 10 Attached to an intermediate portion 8 of the type bar at 9 is a link 10.
- This link is illustrated as two-"parallel members ,connected by web portions 11 and This is primarily for convenience in manufacture and to add stability to the parts, but it is possible to omit the web portions 11 and 12 and employ merely two parallellink members or if desired a single link member may be used. It is, however, preferable to employ the double members since one of these passes on each side of the type bar and serves to guide'the rear end thereof in its movement.
- Pivoted at 13 to the link 10 is a short link 14 which together with the link 10 forms a toggle member.
- This link 14 is pivoted at its other end at 15 to a supporting member 16 mounted in the frame of the machine.
- An extension 17 from the member 16 passes through a bar 18 carried by the frame of the machine and is held in adjusted position by A screw threaded into the member 18 has a head 19 which fits in a cutout 20 of the. extension 17 so that the move ment of the screw will adjust the position of the member 16.
- This member 16 not only supports the link 14 but as will be'noted, supports the remainder of the intermediate connections between the key lever and the link 14.
- An adjustment of the member 16 will, therefore, determine theeifective printing position of the type bar and by adjusting the intermediateconnections will preserve the desired relation between the various parts. It may be noted that it is also pos-- sible to mount themembers 16 rigidly and obtain thedesired adjustment between the platen and type bar by adjusting the platen I in any well known or desired manner.
- the lowerarm 28 of this bell crank ever is connected by a link 29 to an arm 30 which is ivoted at 31 to the lower end of the mem- 116.
- U 1 Key levers 32 and 33' are pivotedat 34 and are returned to normal. position'by' springs 35 which are connected to a bridge member s 36 carried by vthe machine frame.
- the key lever 32 is connectedby a link 37 to one arm 38 of a bell crank ivoted on the axis 31 and having its secon arm 39 provided with cam has a slight dwe parts are heldin substantially fixed position
- the other ke lever 33 of each pair is connected by a similar link 37 to one arm of a bell crank 41 also ivoted on the axis 31 but 1 ing on the ot or side of the link 30 and 6 ing slightly longer than the corresponding arm 39 of the other bell crank lever.
- This bell crank lever 41 is provided with an ofiset ear ,42 which also overlies the arm 30. It is-evident from this construction that a depression of either of the key levers will operate the arm 30 and the whole type-action without affecting the position of the other key lever of the pair.
- the supporting and guiding member 2 has a downwardly extending arm 43 which is connected by a lost motion pin and slot connection '44 to a bell crank lever 45.which is pivoted at 46 to the upper end of a lever 47 which is in turn pivoted at 48.
- the bell crank lever has an arm 49 and the lever 47 has a projection 51 which is connected to the arm 49 by a spring 50. It is obvious that this construction will'cause the lever 47 and'the bell crank 45 to move normally together but will permit an additionalmovement of the lever 47 afterthe bell crank 45 and the guiding member 2 have been moved to the limit of their movement. This additional movement will, of course, tension the movements by adjustable stop screws 52 and 53 carried by a plate 54 attached to the bell crank 45. s
- the supporting and guiding member 2 has a lug 55 on the lower side thereof which nor mally engages an adjustable stop screw 56 threaded into a frame member 57.
- the engagement of this In with the sto screw determines the norma position of t e parts as shown in Figure 1.
- the lug 55 will engage the underside of the head 58 of an adjustable stop screw 59 threaded into the frame member 57. This will limit the upward 'movement of the guiding member 2 and the type bar 1 and the sition ofthe parts will be that shown in igure 2.
- the guiding member 2 is normally held in its lower position by a spring 60 connected thereto at one end and at its other end. to a fixed part 61. h
- the platen When it is desired to print either of the types a or b, the platen is first elevated to upper case position. Then if the type a 1s to be printed, the key lever 32 will be depressed and the mechanism will operate in the same manner as described in connection with the type 0, whereas if the type b is to be printed, the key lever 33 will be depressed and the mechanism will operate in the same manner as described in connection with the type (3.
- a vertically movable support on which the ty e bar slides, connections between the type er and both key levers which are 0 erative upon the deression of either key ever to slide the type bar to printing position, and other connecthis desired tions between the support and one of the key levers only which are operative upon the depression of the last mentioned key lever to vertically move the support.
- a type action comprising a slidable type bar provided with a plurality of groups of type, the types being arranged vertically one above the other, key levers associated with the type bar and corresponding in'number to the number of type in each group, a pivoted support upon which the type bar slides, connections between the type bar and the key levers operative upon the depression of each key lever for sliding the type bar to printing position, said connections including apivoted operating arm, and separate connections between the operatin arm and the respective key levers, and other connections between the support and one key lever-only and operative upon the depression of said key lever for tilting said support to bring another type to printing position.
- a type action comprising a slidable type bar provided with a plurality of groups of type, the types being arranged vertically one above the other, key levers associated with the type bar and corresponding in number to the number of type in each group, a pivoted support upon which the type bar slides, connections between the type bar and the key levers operative upon the depression of each key lever for sliding the type bar to printing position, and other connections between the support and one key lever only and operative upon the depression of said key lever for tilting said support to bring another type to printing position, said support in normal position being inclined downwardly from the horizontal in one direction and in shifted position being inclined upwardly an equal distance from the horizontal in the other direction.
- a type action comprising a slidable'type bar provided with two roups of type, two key a levers associated with t e type bar, and means for operating the type bar from either key lever, said operating means including a pivoted arm connected to the type bar, two bellcrank levers independently engageable with 1 5 3' the pivoted arm, and links respectively connecting the bell-crank levers and the' key levers whereby the depression of either key lever will move the type bar to printing po-- sition.
- said controllingmeans including an arm fixed to the support, a bell-crank lever fulcrumed on a fixed axis, a lever pivoted on the bell-crank lever for limited movements relative thereto and having pivotal connection with said arm, and a pin and cam connection betweenthe bell-crank lever and said key lever.
- a type action comprising a slidable type bar provided with two groups of type, the types being arranged vertically one above the other, two key levers associated with the type bar, a vertical] movable support upon which the type bar s ides, means for operating the type bar from either key lever including a ivoted arm connected to the type bar, two Bell-crank levers independently engageable with the pivoted arm, and links respectively connecting the bell-crank levers and the key levers whereby the depression of either key lever will move the type bar to printing position, and means controlled by the depression of one key lever only for vertically moving said support.
- a type action comprising a slidable type bar provided with a plurality of groups of type, key levers associated with the type bar and corresponding in number to the number of type in each group, a movable support for the type bar, means for operating the type bar which includes a plurality of bell crank levers pivoted to a. fixedsupport, means whereby the operation of each of said bell shifting the movable support.
- a type action comprising a slidable type bar provided with a plurality of groups of type, key levers operatively associated with the type bar and corresponding in number to the number of type in each group, and means for operating the type bar from either key lever including an operating arm mounted on a fixed pivot, and separate connections between the operating arm and therespective key levers.
- a type action comprising a sli'dable type bar provided with two groups of type, the types being arranged vertically one above the other, two key levers associated with the type bar.
- a vertically movable support upon which the type bar slides means for moving the type bar to printing position upon the depression of either key lever, and means'controlled by the depression of one key lever only for vertieally moving said support, said controlling means including an arm fixed to the support, a bell-crank lever fulcrumed on a fixed axis,
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- Accessory Devices And Overall Control Thereof (AREA)
- Handling Of Sheets (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US226953A US1722439A (en) | 1927-10-18 | 1927-10-18 | Typewriting machine |
| GB29023/28A GB298984A (en) | 1927-10-18 | 1928-10-09 | Improvements in actions for typewriting machines |
| FR662013D FR662013A (fr) | 1927-10-18 | 1928-10-11 | Perfectionnements aux machines à écrire |
| DER75955D DE547909C (de) | 1927-10-18 | 1928-10-18 | Typenstangenschreibmaschine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US226953A US1722439A (en) | 1927-10-18 | 1927-10-18 | Typewriting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1722439A true US1722439A (en) | 1929-07-30 |
Family
ID=22851154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US226953A Expired - Lifetime US1722439A (en) | 1927-10-18 | 1927-10-18 | Typewriting machine |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1722439A (de) |
| DE (1) | DE547909C (de) |
-
1927
- 1927-10-18 US US226953A patent/US1722439A/en not_active Expired - Lifetime
-
1928
- 1928-10-18 DE DER75955D patent/DE547909C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE547909C (de) | 1932-03-31 |
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