US442819A - Type weiting machine - Google Patents

Type weiting machine Download PDF

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US442819A
US442819A US442819DA US442819A US 442819 A US442819 A US 442819A US 442819D A US442819D A US 442819DA US 442819 A US442819 A US 442819A
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shaft
wheel
lever
key
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J1/00Typewriters or selective printing mechanisms characterised by the mounting, arrangement, or disposition of the types or dies
    • B41J1/22Typewriters or selective printing mechanisms characterised by the mounting, arrangement, or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/32Typewriters or selective printing mechanisms characterised by the mounting, arrangement, or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being parallel to the axis of rotation, e.g. with type on the periphery of cylindrical carriers

Description

(No Model.) 3 sheets-sheetl 1-.
F. MYERS. YTYPE WRITING MACHINE.
No. 442,819. Patented Dec. 16. 1890.
FIG.|
| lllZ2 (No M0161.) 3 sheets-sheen 'I'. MYERS. TYPE WRITING IIIIGlIINE.Y
No. 442,819. Patented Dec. 16.11890.
FIG.3
MESEES 9W SEMW@ (No Model.)
`3 Sheets--Sheet 3A 1:". MYERS. TYPE nWRITING MACHINE.
110.442,819. 121116111911 Dec. 16.1890.
WITIEESEE I we Noms paens co., mom-umu., wAsHmcTsN, n. c.
VUrrrrED STATES ATENT TYPE-,wRlTlNG MACHINE.
SPECIFICATION forming part of Letters 'Patent No. 442,819, dated December 16, 1890.
Application led May 14,1889- Serial No. 310,696. (No model.) Patented in England July 18, 1888,1l0. 10,410; in France l January 17, 1889, No. 195,430, and in Belgium Tanuary 18,1889,N0. 84,675.
writing machine in which the type are arranged above the paper carriage or platen upon the peripheries of one or more vertical disks, the said disk, er each disk, (if there be more than one,) being rotated into a given position for each type thereon, the relative amounts of such rotation depending upon the relative distances to which the type-key levers are depressed. Certain portions of the mechanism are, however, applicable to typewriting machines other than the above, and certain portions also are fully described and claimed in my former patent specification,
Serial No. 304,810.
The invention relates more especially to the position and manner of mounting` the typewheel, to the mechanism for operating and adjusting said wheel, to the spacing mechanism, to means for raising the platen against the type,and to various other details, the object beiug to construct a strong and comparatively cheap machine, and one which shall at the same time be easily and quickly worked by means of the ordinary keys placed in front of the machine.v
The invention may be understood by reference to the accompanyingl drawings, in which- Figure 1 is an end elevation of the machine. Fig. 2 is an elevation of the reverse end of the machine to that shown in Fig. 1. Fig. 3 is a plan of the machine with parts broken away. Fig. 4 is a front elevation of the machine witlr parts removed and other parts broken away. Figs. to 8 are views showing various details and modifications of the keylevers and their connections. Fig. El is a detail View of the inking mechanism. Fig. 10 showsl a modified device forholding the typewheel in any of its longitudinal positions.
1n the drawings and specification only so much of the machine is shown and described as is necessary forthe proper understanding of the invention.
On one end of the main frame A of themay chine is mounted an upright frame B, and on the other an overhanging standard B. The main frame carrying the aforesaid frame and standard and almost the whole of the mechanism is pivoted, as at A2, in an approximately horizontal position to the lower fixed machinebed A', being heldin its normal position by a spring or springs At and an adjustable stop a4, which is preferably fitted with a bufferblock.v A similar buffer or buffers a5 may also be provided for the frame to strike against at the termination of its downward movement. y
The main frame is preferably pivoted to the bed A', directly below the key-lever shaft D and platen R, as shown in Figs. 1 and 2, or even slightly in advance of these parts. By this arrangement the weightof the frame and mechanism is almost equally distributed on each side of the pivots A2, so that a comparatively light sprng may be employed at A, and little power is required to compress the spring when the frame is depressed.
The keys C are preferably arranged in three parallel rows at the front of the machine. The same keys which are used for printing the large characters are also used for printing the small characters and the figures, in the manner hereinafter described. Each key is attached to the front end of a key-lever C,
all the key-levers being carried by the horizontal key-lever shaft D,which passes through their rear ends and is supported in bearings, preferably on the main frame A, and upright frame B, aforesaid. The key-levers may be connected to the key-lever shaft by a long key or feather (l, which passes through a suitable slot d in the eye of each lever, so that the shaft is rotated for a certain distance whenevera key-lever is depressed, (see Fig. 5;) or the eye of each key-lever may be provided with a feather, and a long slot may IOC be formed in thelever-shaft. Each of the keylcvers is guided preferably at or near its outer end by guiding-slot c, Figs. 3 and 4, against the lower end of which it strikes when depressed to a certain distance. The slots are preferably formed in a vertical rib C2, eX- tending across the main frame below the le- .vers. No two slots inthe rib have the same depth, so that each key depresses its lever to 1 n a different point and rotates the shaft through a different angle from that of any other key. Each key-lever, after being depressed, is returned to its normal position by a spring c'. This spring is preferably secured to the rear I5 of the frameA and rests against the under side of the lever. By this arrangement the levers cannot depress the main frame before striking the bottom of the slots c, as they otherwise might do if the springs were mounted 2o upon the front part of the frame. The upward movement of the levers is controlled by a check-rod c2 or by other suitable check arrangement.
The levers C may be retained in their position longitudinally upon the shaft D by loose collars upon the shaft; but it is preferable to retain them in position by passing them through slots c4 in a vertical rib C3, Figs. 4 and 5, which is mounted upon the frameA 3o and placed as near as practicable to the shaft.
After a lever is released the shaft D is returned to its normal position by a spring f, fhereinafter described.
To avoid depressing all the levers each time a key is moved, the slots d in the lever-eyes are extended downward-that is, away from the working-edge of the feather CZ on the keylever shaft, as shown in Fig. 5, or upward from the feather dif the latterbe on the rear 4o side of the shaft. The upper or working edge of the feather is held normally in an arrangement suchas shown in Fig. 5 by the spring f aforesaid, or its equivalent, against the corresponding edges of all the slots, so that the least downward movement of a key-lever will actuate the shaft. The greatest movement of which a key-lever is capable will not, however, cause the shaft to rotate so far as to bring the lower or rear edge of the feather in 5o contact with the corresponding sides of the slots of the other levers and the latter will consequently remain stationary.
Instead of mounting the key-levers C upon their shafts D, as described above, so that their varying travel imparts a varying movement to the typewheel,they maybe mounted upon or connected with their shaft, as shown in Figs. 6 and 7, by either of which arrangements the varying movements of the type-v o wheel may be effected with a constant keylever travel. In the arrangement shown in Fig. 6 the working-edges of the slots d in the lever-eyes instead of bearing normally against the working-edge of the feather d, as in Fig. 5, 65. are located at a certain distance above-that is, away fro m-the working-edge of the feather in the shaft, (or below the working-edge, if
the feather be on the rear side of the shaft-,) so that during a certain definite portion of each levers movement the shaft remains stationary. Notwo slots have their workingedges at the same distance from the corresponding edges of the feather, and therefore the shaft D (and consequent-ly the type-wheel) will be rotated by the constant travel of each lever into a different and definite position. This constant travel is effected by placing the lower ends of all the guiding-slots c at the same distance below the levers. The working-edge of 'the feather d may be held normally by the spring f against the corresponding edge of the narrowest slot d', so that the least downward movement of the corresponding lever will actuate the shaft; or the shaft may be held in its normal position by other equivalent means.
In the modified arrangement shown in Fig. 7 ,which also gives a constant lever-travel, the key-levers C are connected with their shaft in such a manner as to greatly reduce the friction between the levers and shaft when the latter is rotated by any given lever. The levers are loosely pivoted upon a rod D2, carried in suitable brackets on the main frame A and lying parallel to and in the rear of the lever shaft D. The feather d in said shaft is extended outward for a short distance and the levers are arched over the shaft and are each provided with a projection or shoulder d2, which is located at a given distance above the feather, the amount of such distance depending on the amount of movement required on the shaft. By this arrangement the friction is reduced to that of the shaft-bearings of the feather d and lever projection d2, and of one lever-eye. The working-edge of the feather (l may bear normally, as before, against the lowest projection d2.
Fig. S shows how the arrangement. set forth in Fig. 7 may be so modified as to give a variable lever movement. All the projections (Z2 bear normally against the feather cl, and the slots c are of various depths, as described with reference to Figs. 3, 4, and 5.
The type-wheel and the adjusting, locking', and driving mechanism therefor may be arranged as follows: The key-levershaftD carries a bevel-Wheel or quadrant D,which gears with a similar wheel or quadrant F on atransverse shaft F, carried in bearings on the upright standard B aforesaid. The front end of the shaft F carries a toothed quadrant-arm Fwhichprojects vertically upward for some distance. The said arm is connected with the spring f, or its equivalent, which returns it to its normal position whenever it is released, thc said spring being preferably secured to a weighted downward extension j'2 of the quadrant-arm, as shown. The said IOC weighted extension serves as a counter-balance for the oscillated.
quadrant-arm F2 as the latter is The type are carried on the periphery of a `alterne f3 type-wheel H', which is mounted upon a hori-l zontal shaft h above the platen R in such a manner as to be capable of oscillating in a vertical plane passing approximately through the axis of the said platen. The type are arranged in one or more (preferably three) parallel circles Z Z' Z2 around or partly around the periphery of the type-wheel, a blank space or gap H3 being left at one point in the circles of type or in the type-wheel itself, for a purpose hereinafter setforth. Instead of arrangingtwo ormore groups of type upon onewheel,I may arrange them on separate wheels of equal diameters mounted side by side upon the same shaft. One group or circle of type-as, for instance, Z-contains the capitals and the stops or signs most frequently used therewith. A second group, as Z2, embraces the small letters, with their usual stops, &c., while the third group Z', which is preferably the central one, includes the numerals and those stops, signs, or characters which are seldom used. By thus arranging the type in two or more parallel rows the diameter and weight of the typewheel may be greatly reduced.
The type-wheel shaft 7L is mounted in suitable bearings h' upon the machine, preferably upon the standard D', so as to move with the main frame, but independently of the platen R. The shaft h is capable of a considerable amount of movement longitudinally, so that any of the groups of type upon the type-wheel may, as desired, be brought into position above the platen by simply pushing back or pulling forward the shaft. The shaft and wheel are held in the desired longitudinal position by means of a spring-pawl K2, or its equivalent, which is adapted to engage any one of a series of parallel circumferential grooves K2, carried by the shaft and corresponding in number and distance apart to the groups of type on the type-wheel. The grooves can be formed on a boss on the typewhe'el or shaft, as shown, or upon the shaft itself, and the spring-pawl is so constructed as to yield when a slight force is applied longitudinally to the shaft, while at the same time it is stiif enough to hold the type-wheel securely in position without in the least interfering with its rotation; or the grooves K3 may be replaced by a simple collar having a central groove, the pawl in this case resting either within the groove or against one end of the collar. This arrangement may be seen in Fig. l0.
The type-wheel shaft carries near its front end a toothed wheel K, into which gears the vertical quadrant-arm F2 aforesaid, so that the type-wheel is rotated more or less at each movement of the quadrant-armthat is, of the key-lever shaft D, worked by the keyle vers. It will be obvious that other mechanism might be employed for connecting the main shaft with the type-wheel.
The front end of the type-wheel shaft carries a locking wheel or disk H5, having on its periphery a series of teeth or notches H2, or
notches each time the main frame is depressed to print a character, so that the type-wheel is always held firmly in position during the moment of printing.
The locking-pawl L is preferably supported by a spring-fingerL' attached to the fixed bed A. After the pawl has vengaged one of the notches H2 and during any further depression of the main frame the spring-finger is compressed and prevents any injury to the locking wheel or pawl. The locking-wheel H5 also serves as a handle for adjusting the longitudinal position of the type-wheel.
One side of the hinged bed S, carrying the platen-frame R', is hinged or pivoted to the upright frame B and standard B', or in other convenient manner, and the other side (preferably the rear one) is supported (by means of a projection S on the hinged bed) upon an abutment S2, carried by the fixed machinebed A', as shown in Figs. l and 2. The bearing-face of the abutment S2 or projection S' (or both) is curved or sloped, as shown, in such a manner that the rear side of the bed S (and therefore the printing-platen R) is raised slightly, as the pivots s of the hinged bed are drawn slightly forward and downward by the depression of the main frame A in the act of printing. The bed S might be pivoted at its rca-r side upon the main frame and its front side be supported upon an elevating device S' S2, as above described. The depression of the pivoted main frame A also causes the platen-frame R' to be moved longitudinally the necessary distance for spacing the letters. This may be eected as follows: A toothed rack T is supported in brackets attached to the hinged bed S, and has at or near one end a horizontally-projecting pin t', Figs. 3 and 4t. The sliding platen-frame R has pivoted to it a pawl t2, which engages the teeth of the toothed rack in one direction only. The rack-pin t' is engaged bythe upwardly-proj ecting arm T2, Fig. 4, of an angle-lever T', which is pivoted to the frame B. The other arm T3 of the lever is first cranked horizontally and then projects vertically downward and rests upon the rear end of the lever t, Figs. l and 3, which is pivoted to the fixed bed A' at t7 and to the front of the oscillating main frame A at t8. As the main frame is depressed, the rear end of the lever t" rises and lifts the arm T3 of the angle-lever. By reason of the shape ofthe angle-lever T' the lower end of the arm T3, when raised, moves sidewise toward the right, while the upper end `of the arm T2 moves toward the left and draws along the rack T. By the time the rack has been moved lthe proper distance, the lower end of the arm T3 has moved off the rear end ofthe lever t, and any further upward movement of the latter (due tothe depressionof the frame A IOO IIO
during the moment of printing) takes place along the vertical part t of the arm T3 without causing it to be moved sidewise. W'hen the main frame is released, the rack 'l and lever T are returned to their normalposition by the spring t4.
In spacing a word the main frame is depressed by means of a tinger-bar E, provided at its front edge for that purpose. A gap H3 is left as aforementioned in the groups of type on the type-wheel I-l, in order that the platen, when raised in spacing a word, may not come in contact with the wheel.
The sheet of paper Q is held in position on one side of the platen by a wire or rod r3, Figs. 2 and The wire r3 is cranked at each end, and is pivoted to the platen-frame at r, as shown, a stop fr being provided at one or both ends for it to rest against. The wire clip is Apivoted somewhat stiily in its bearings, and
the stop or stops Ware in such a position that the clip, when resting against them, lies near enough tothe platen to cause the paper Q to Vlie close against its upper side, but not so 4near as to press the paper against the side of the platen and prevent it from moving freely along when the platen is turned round in spacing a line. In conjunction with the clip r3 the top of the paper-guide rs is so placed as to hug the platen and hold the paper tightly against the same on the side remote from the clip. To tix a sheet of paper in the machine, the edge of the sheet is first slipped under the platen, being guided by the guide rg. The platen is then turned so as to draw the paper past the guide and the clip is thrown back. The edge of the paper is now turned over the platen and held in position thereon by replacing the clip.
The type may be inked previous to each impression, as follows: The ink is placed upon a roller M Figs. 3 and 9, of absorptive material. This roller bears against the type and is carried in bearings, preferably upon the spring-arm M. rlhe latter is attached to a bracket M2, which is adj ustably mounted in guides upon the frame or standard vB', as shown in Figs. 2, 3, and S. The type required to print is drawn across the ink-roller each time the type-wheel is rotated previously to and after printing.
A warning-bell, such as is usually found in type-writing machines, maybe placed in any convenient position, so as to ring when a line is almost complete.
The mode of action of the foregoing parts of the machine is as follows: The type-wheel H is irst adjusted so that its spring pin or pawl K2 rests in that groove on the type-wheel shaft corresponding to the group of type with which it is desired to print. A key is depressed and causes a partial rotation of the typeswheelby means of the keylever C', belonging to the said key, and the mechanism connecting the said lever with the type-wheel shaft. The key-lever strikes the bottom of its guidingslot c as soon as the type-wheel has been rotated sufficiently to bring the corresponding type into position for printing. -By continuing the pressure on the key the pivoted main frame A is depressed. This causes the lockingdisk H5 to be brought down upon thelockin g pin or pawl L aforesaid. The pawl, entering the notch H2 immediately above it, exactly adjusts and locks the type-Wheel in. position before printing. During the first part of the downward movement of the main frame A the rack T is operated by means of the lever t and the angle spacing-lever T', and the platen R is consequently drawn along into the proper position for printing. During the depression of the main frame the platen R is raised toward the type-wheel H bythe sliding contact of the projection S and'abutment S2, and by the time the main frame has descended to the buffer a5 the platen has pressed the paper against the t-ype- Wheel and produced an impression. The key being released, the key-lever, type-Wheel, and main frame are returned to their normalposition by their respective springs, the spacinglever releases the rack-pin t,and the rack is returned to its original position byits spring tl. The machine is now ready for another or the same key to be depressed to produce the next impression.
In describing the foregoing parts of the machine it has been assumedv that the matter was printed from left to right. The machine could, however, be arranged to print from right to left; also, the style of the printed characters may be varied by having a series of similar type-wheels, each bearing charactel's of apartieular style, any one of which wheels may be readily changed for any other, disconnecting the wheel from its shaft, and withdrawing the latter from its bearings.
I do not herein lay any broad claim to the following constructions, as substantially similar constructions are fully described and claimed in my pending application, Serial No. 304,816.
The combination, with a type-wheel and a type-key-lever shaft, of a toothed Wheel on said shaft, a Wheel gearing with the same and rigidly mounted upon an oscillatory shaft, a toothed quadrant on said oscillatory shaft, and a toothed driving-wheel gearing with said quadrant and movable synchronously with the type-wheel.
The combination of a type-Wheel having type arranged around its periphery, a locking-wheel movable synchronously with the type-wheel and having a concentric series of notches on its periphery corresponding in number and relative angular position with the type, a depressible main frame carrying both type-wheel and locking-wheel, and a locking-pawl mounted in proximity to the lpcking-wheel and adapted to be introduced into the adjacent notch on said wheel at each depression of the main frame.
I claim as my invention- Y l. In a.type-writer, the combination of a IOO type-wheel capable of an oscillatory and a longitudinal movement upon an approximately horizontal axis, a series of key-levers connected with said type-wheel and adapted to impart varying amounts of oscillation to the same, a depressible main frame carrying said wheel, together with the said levers and connecting mechanism and pivoted upon an axis lying below the wheel and approximately at right angles to the axis of the samc, and a platen-carrying bed below the wheel, hinged at one side to the main frame on an axis approximately parallel to the pivot-axis thereof and supported at the opposite side upon an elevating device not carried by the frame, substantially as described.
2. In a type-writer, a pivoted depressible main frame A, a type-wheel II, mounted thereon, an d a platen-bed S, located below the typewheel and hinged at or near one side to the main frame, as described, in combination with a stationary abutment S2, supporting the opposite side of the platen-bed and having a sloping termination adapted to bear against the opposing sloping face of a piece S on the bed, whereby the depression of the main frame causes the platen-bed to be raised toward the type-wheel a distance suflicient to print, substantially as set forth.
3. In a type-writer, the combination, with a rocking shaft D, connected by suitable mechanism with an oscillatory type-wheel, of a series of parallel depressible key-levers arranged transversely to said shaft, each lever having the same amount of travel and each constructed to operate the said shaft during a definite and different portion of such travel, whereby a variable type-wheel movement is obtained with a constant movement of the key-levers, substantially as set forth.
4. In a type-writer, a type-wheel H, a shaft D, connected therewith, and a series of keylevers C', each having the vsame travel and each capable of imparting a different amount of rotary movement to the said shaft, in combination with a check-rod c2, placed above the upper edges of the said levers, springs c', adapted to hold the levers normally in contact with said check-rod, and an upright rib C2, provided with leiv'er-guiding slots c, having all their lower closed ends located at the same distance from the opposing lower edges of the levers, substantially as set forth.
5. In a type-writer, the combination, with a rocking shaft D, connected with an oscillatory type-wheel, of a series of key-levers C lying transversely to said shaft and mounted upon a separate axis in the rear of the same, a projecting feather d upon the shaft, and a proj ection upon each lever adapted to engage the said feather, whereby the shaft may be operated by the depression of a lever with a minimum amount of friction, substantially as described.
6. In a type-writer, the combination, with a rocking shaft D, held normally in a given angular position, of a series of key-levers C', havinga constant travel and mounted transversely above the shaft upon an axis in the rear of the same, a projecting feather d upon the shaft, and a projection d2 upon each lever adapted to engage said feather and having its lower face located normally at a distance from the upper face of the feather different from that of any of the other projections, sub-- st-antially as set forth.
'7. In a type-writer, the combination, with a depressible main frame A anda reciprocatory spacing-rack T, connected, as described, with the sliding platen-frame, of a pin t', projecting laterally from said rack, an angled spacing-lever T', pivoted on the main frame and having one of its arms bearing against the side of said rack-pin, and a rocking lever t6, pivoted upon a stationary part of t-he machine and having one end engagingthe other arm of said angled lever and the opposite end connected to the front portion of the main frame, whereby the said rack and platen are drawn along the necessary distance to space a character or word each timethe main frame is depressed, substantially as described.
8. In a type-writer, a reciprocating spacingrack T, having a rack-pin zf, a depressiblc main frameA, and a rocking lever t6, operated, as described,at each depression of the said frame, in combination with an angled spacing-lever T', pivoted to the main frame and having its upwardly-extended arm T2 bearing against the side of the said rack-pin and its lateral downwardly-cranked arm T3 bearing with its lower extremity upon the rear end of the said rocking lever,and provided at such extremity with a vertical part t, substantially as and for the purposes set forth.
9. In a type-writer, the combination of a type-wheel H, an absorptive inking-roller M, bearing against the type, a flexible arm M, carrying said roller, and a bracket M2, serving as a support for said arm and adjustable in guides to and from the type-wheel, substantially as described. l
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
F. MYERS.
Witnesses:
WM. P. THOMPSCN, II. P. SHOOBRIDGE.
IOO
IIO
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