US644082A - Type-writing machine. - Google Patents

Description

No. 644,082. Patented Feb. 27, I900.

W. J. KAUFFMAN.

TYPE WHITING MACHINE. (Application filed Time 11, 898.)

4 sheets-sheet I} (No Model.)

wan-r03 THE Noam: PETERS c0, PHOTO'LITNQ, WASHINGTON, n. c

No. 644,082. Patented Feb. 27, I900. W. J. KAUFFMAN.

TYPE WRITING MACHINE.

(Application filed June 11, 1898.

4 Sheets8heet 2 (No Model.)

1 1.? n I L 5m I I L EW INVENTOR MW vfi dW m: uenms runs :0. mmummi, WASHINGTON, o. c

No. 644,082. Patented Feb. 27, I900. W. J. KAUFFMAN.

TYPE WRITING MACHINE.

(Application filed June 11, 1898.) (No Model.) 4 Sheets$heet 3.

- WITNESSES INVENTOR' 1 a: NORRIS PETERS p9, gnomu'rua. WASHINGTON, DIG,

Patented Feb. 27, I900.

v No. 644,082.

w. J. KAUFFMAN.

TYPE WRITING MACHINE.

(Application filed June 11, 1898.1

4 SheetsSheet 4.

(No Model.)

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STATES "VILLIAM J. KAUFFMAN, OF CANTON, OHIO, ASSIGNOR OF TWO-THIRDS TO LOUIS A. LOIOHOT AND ISAAC HARTER, OF SAME PLACE.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 644,082, dated February 27, 1900.

Application filed June 11,1898. Serial No. 683,174. (No model.)

T (0% whom it may concern: Be it known that I, WILLIAM J. KAUFF- MAN, of Canton, in the county of Stark and State of Ohio, have invented a new and useful Improvement in Type-Writing Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- IO Figure l is a top plan view, partly broken away and with the ribbon-feed removed, of my improved type-writer. Fig. 2 is a front elevation of the same, partly broken away. Fig. 3 is a transverse vertical section. Fig.

I 5 4 is a front elevation, partly broken away, of the feed mechanism for the carriage. Fig. 5 is a sectional elevation of the feed vmechanism, and Fig. 6 is arear elevation of the same with the parts removed.

My invention relates to that class of typewriters wherein the type are attached to typebars which print with an upward stroke, and it is designed to simplify the construction of such machines and lessen their weight and size, also to render the writing visible during operation of the machine and to improve the actuating connections between the keys and the type-bars and the general construct-ion of the machine.

In the drawings, 2 represents a rectangular frame, which forms the base of the machine, having secured therein at the rear a longitudinal stationary shaft 3, to which the key:

levers 4 are loosely pivoted, spacing-collars 5.

5 being placed between the key-levers around the shaft. The key-levers all extend parallel with each other and swing withinvertical slots in the front plate 6 of the frame. Secured to the frame immediately above the intermediate portions of the key-levers is a longitudinal shaft 7, secured rigidly to the frame and upon which are loosely pivoted a series of vertical bell-crank levers 8. Each of the lower arms of these levers is pivotally end of one of the type-levers 11.

The type-levers are all pivoted about a common rod or Wire 12, carried upon sup-'- porting-plates 13, which project upwardly from an arc-shaped basela. This base is secured to the rear portion of the framework and is provided in its upper face with a dovetailed slot. Each of the supporting-plates is provided with a dovetailed base, which fits in this slot, and the plates are spaced apart the desired distanceby interposed spacingblocks, which are placed in the slot between the bases of the plates. When the series of supporting-plates and intermediate blocks are assembled within the slot, they are secured in place by end screws 15, which eX- tend through posts 16, removably secured within the ends of the slots, these screws bearing upon the end supporting-plates, thus pinching the whole series together and securing themin place. The type-levers then being placed between these plates, the flexible wire is pushed through the series and forms a trunnion for each type-lever. The type bars 17 normally rest upon an arc-shaped pad-18, carried upon a suitable support 19 above the front portion of the base.

As each of the connecting-links 10, except the central one, extends to a type-lever which swings in a plane at an angle to the plane of its bell-crank lever, I bend or twist the rearportions of these links, so as to bring each such portion into a plane substantially parallel with the plane of movement of its typelever. This bending of a portion of the connection between the vertically-swinging keylever and the angularly-swinging type-lever is an importantpart of my invention, since each-end portion of the bar connection is substantially in the plane of movementof the element with which it is connected, thus giv- 9o ing a simple connection. The bar connections being of different lengths enable the bell-cranks to be duplicates of each other, and the bending also gives a dishing to the set of bars, so that they may be brought closer be- 5 neath the type-bars, making the machine more compact. The bell-crank levers and the key-levers both swing in vertical planes parallel to each other, thus allowing the keys to lie in horizontal rows, and I intend to cover the same broadly in my claims. The degree of inclination of one part of the link to its otherportion depends, of course, upon the angle of the type-lever to which it is connected.

To assist in returning the key-levers to their normal position, I provide small wire springs 20, which are secured in the fulcrum-shaft of the bell-cranklevers, and thence extend down around the rear portions of the key-levers. Each key-lever is preferably provided with an upper curved recess, which fits around the collar, forming the fulcrum of the bell-crank.

Beneath the rear portion of the key-levers extends the universal bar 21, which is of U form, its arms being secured to the projecting ends of a rock-shaft 22, pivotally mounted at the rear of the framework over the stationary shaft 3 for the key-levers. Secured to the arms of this universal bar are the levers 23, to which the spacekeys 24 are secured.

Adjustably secured to the central portion of the rock-shaft is a rockarm 25, which moves within a slot in the longitudinal plate 26 of the frame. This arm is normally held in rear position by leaf-springs 27, secured to removable pins 28 in the frame and bearing upon short pins 29, projecting from the sides of the arm. The arm is hollow and contains a vertically-movable post 30, which is slotted at its upper end to receive a pawl or dog 31, having a vertical open-topped slot 32, which normally registers with the teeth 33 of a wheel 34. The inner portion of the rock-arm is vertically slotted, and through this slot projects a lower lug 35, to which is secured a springpawl 36, the outward movement of which is limited by a set-screw 38, secured to an upper projecting lug 37. An intermediate guidelug 39 also projects from the post through the slot in the rock-arm. The wheel 34 is provided with an actuating-button 34, loosely supported upon a short shaft 40, mounted in hanger 41, secured to the rear of the carriagebed 42, and through this wheel projects a pawl-pin 43, which is normally pressed rearwardly into engagement with a face ratchet 44 by a spring 45, extending across the front face of the wheel. The ratchet 44 is formed upon the front face of a toothed wheel 46, also mounted upon the short shaft 40, and this wheel engages the teeth of a rack-bar 47, secured to the lower face of the carriage 48; The wheel 46 is cut out to contain a spiral actuating-spring 50. (Shown in Fig. 4.) The hanger 41 is provided with a depending hook 49, which engages a slot in the rearwardlyprojecting portion of the dog 31, so that when the carriage-bed is raised to bring the platen into a different vertical position the post will be lifted within its rock-arm and the feed mechanism will act as before.

The carriage-bed is mounted upon end supports 51, which slide within suitable guideways in standards 52 upon the frame and are connected at their lower ends to levers 53 and 54, respectively. The lever 53 is secured to a longitudinal shaft 55, extending longitudinally of the machine in the rear of the bellcrank levers and beneath the connectinglinks, and to one projecting end of this shaft is secured the lift-lever 56, whose key is marked F I G. The other lever 54 is secured to a collar loose upon the shaft, and to the projecting end of this collar is secured another lifting-lever 63, whose key is marked G A P. One of these levers is adapted to lift the carriage through a part of its movement and the other its entire movement, so that the platen may be given three different vertical positions, allowing three different characters to be placed upon each type-bar, as shown in Fig. 1. The carriage-bed is provided with suitable longitudinal guideways, within which the base of the carriage fits, these ways preferably being provided with small friction-rollers. The carriage is held within these guideways by inwardly-project ing clips 57, which may be separated, as shown, or may form continuous ribs extending along each side of the carriage-bed.

The carriage is provided with suitable end standards 58, within which the trunnions of the cylindrical platen 59 are supported. These standards are provided with two arms 60, having slotted bearings at their ends, within which rest the trunnions of two small rubber-covered rollers 61, which are adapted to bear upon the paper on the platen. A leafspring 62 bears upon the trunnions of these small rollers at each end, the amount of its pressure being regulated by a set-screw 64, passing through this spring and entering the standard. The gage 65 is secured to the end standards in front of one of the small rollers and near the top of the platen, where it can be easily seen by the operator.

At one end the platen is provided with a plate 66, having a circular series of beveled recesses or holes 67. The platen-trunnion at this end projects for some distance beyond its bearings and is provided with a small screw 68, which projects laterally into an interior cam-slot in a surrounding sleeve 7 O, to the outer end of which is secured the shank of a line-space button or wheel 71. A spiral spring 72 is interposed between the end of the trunnion and the button, so that the button is normally forced outwardly to the limit of its movement. Surrounding the sleeve, between the shank of the button and its enlarged inner portion, is a loose collar 73, provided with a gravity-pawl 74, having a pointed end 75, arranged to enter and fitin the recesses 67. This pawl normally rests upon a supporting-pin 76, projecting from the standard, and is limited in its upward movement by contact with a stop-pin 77. The stop-pin 77 is provided with a projecting lateral lug or screw 78, and by turning the stop-pin this lug may be brought into depending position, so that it will contact with the pawl. When the pin is turned into the reverse position, it allows the platen to turn the distance of two recesses to give a double spacing, and when the lug or screw is turned down it will stop the pawl, so as to give single spacing. The

'leaf-sprin gs 7 9.

platen is held in its adjusted positions by tion while the other key is struck. One of tooth 79, which projects through the standard into the recesses 67, and is pressed in by The carriage is provided with the usual arcshaped shield 80 to hold the paper in proper position.

The ribbon S1 is carried upon two spools 82, pivoted to the front portion of the carriagebed, near its end, each spool having a ratchetwheel 83, engaged by a pawl 84, these pawls being mounted upon the bifurcated arm 85 of a bell-crank lever 86, the other arm of which is pivoted to the rear end of the dog 31. These pawls are pressed into engagement with the teeth of the ratchet-wheel 83 by springs, and the pivot of each pawl is cam-shaped, so that when thrown into retracted position by a small pin 88 against the action of the spring it will remain in such inoperative position, as

shown at the left hand of Fig. 2. One of these pawls is always in retracted position when the other is in engaging position, they being reversed when it is desired to rewind from one spool to the other. To the trunnion of each spool is secured an arm 89, having guide-pins 90, between which the ribbon passes. Secured to each end of the bifurcated arm of the bellcrank lever is a curved arm 91, having at its end a fiat loop 92, extending vertically, these loops being spaced apart a suitable distance for the type to strike between them, they guiding the ribbon into a vertical plane at this point. I

The operation is as follows: When a key is depressed, it tilts its bell-crank lever and through the bent connecting-link swings the type upwardly, so that it strikes the ribbon between its supporting-loops and drives it against the platen. At the same time the keylever in moving downwardly swings the U- shaped universal bar, and thereby tilts the arm 25 forwardly, as shown in Fig. 5, bringing I I I the front slot of the dog 31 out of registry with the teeth of the wheel 34 and allowing the spring-pawl to spring outwardly into position to engage the next tooth. \Vhen the arm tilts back, the spiral spring within the pinion moves the ratchet-wheel one tooth,the springpawl engaging this tooth and the dog returning to its normal position. This action moves the carriage along the bed the desired space. Vhen the arm tilts forward, it swings the bell-crank lever 86, and thereby raises the ribbon sufficiently to cause the type to print upon the paper, at the same time moving the pawls of the spool ratchet-wheel upwardly, so that as the bell-crank returns to its proper position one of these pawls will engage the next tooth of the ratchet and feed one of the spools, the ribbon being drawn from the other, the ribbon carried by the bell-crank being depressed sufiiciently to expose the writing to the View of the operator. When it is desired to lift the carriage-bed so as to cause other characters upon the type-plate to strike the platen, one of the keys marked F I G or C A P is depressed and held in such posithese keys is arranged to lift the carriage a part of the distance, while the other moves it up-its entire stroke. The carriage maybe fed along the 'bed in any of its positions, either by the ordinary keys or by the spacekeys, independently of the character-keys.

The advantages of my invention will be apparent to those skilled in the art. The machine is exceedingly simple and compact, givesa large capacity for different characters, with very slight weight and size, and will perform the same work as more costly and intricate machines. The peculiar connections between the key-levers and the type-levers enable the key-levers to move in parallel vertical planes, while the hell-crank levers may all be made alike and of the same length and swing in vertical planes, so that they may be directly connected to the key-levers, while the type-levers swing back and forth in their various inclined positions,the connecting-bars being of different lengths, with the end portions bent into the plane of movement of the parts to which they are connected.

Many variations may be made in the form and arrangement of the various parts without departing from my invention, since I claim 1. In a type-writer, a series of parallel vertically-swinging key-levers, a series of parallel vertically-swinging bell-crank levers connected to the key-levers, said bell-crank levers having arms of the same length and swinging on a common horizontal axis, a series of type-levers mountedin a curved plane, and links connecting the bell-crank levers to the type-levers; substantially as described.

2. In a type-writer, a series of parallel vertically-swinging key-levers, a series of parallel vertically-swinging bell-crank levers,with arms moving in parallel planes upon a common horizontal axis, one arm of each bellcrank having a direct loose connection with a key-lever, a series of type-levers mounted in a curved plane, and links connecting the bell-cranks to the type-levers, substantially as described.

3. In a type-writer, a series of parallel vertically-swinging key-levers, a series of parallel vertically-swim gin g bell-crank levers, having a common horizontal axis and connected to the key-levers, a series of type-levers mounted in a curved plane, and links connecting the bell-cranks to the type-levers, each link being bent so that its ends are substantially parallel to the planes of movement of the parts to which they are connected; substantially as described.

4. In a type-writer, a series of parallel vertically-swinging key-levers, a series of parallel vertical ly-swin gin g bell-crank levers which are duplicates of each other, each having a lower arm directly connected by a loose joint with a key-lever, a series of swinging typelevers mounted in a curved plane, and links connecting the upper arms of the bell-crank levers with the short arms of the type-levers, said links differing in length and being bent so thattheir end portions are substantially parallel to the planes of movement of the parts to which they are connected; substantially as described.

5. In a type-writer, a series of parallel vertically-swingin g key-levers, a series of parallel vertically-swinging bell crank levers mounted over the same,with a common horizontal axis, said levers having arms of the same length, a series of type-levers mounted in a curved plane, and flat bars of different lengths connecting the upper arms of the bell-crank levers to the type-levers, said bars being bent so that each end portion is substantially parallel to the plane of movement of the part to which it is connected; substantially as described.

6. In a type-writer, a curved support having a dovetailed slot, a series of projecting plates having bases fitting in the slot, spac: ing-blocks between the plates in the slot, means for clamping the parts together and a series of types levers pivoted between the plates; substantially as described.

7. In a type-writer, a series of parallel verticall y-swin gin g key-levers, a series of parallel vertically-swinging bell-crank levers, each having one arm provided with a loose pinand-slot connection with a key-lever, and. a pivotal link connection between the other arm and the type-lever; said bell-crank levers being pivoted in their elbow portions between the connections to the key-levers and the links; substantially as described.

In testimony whereof I have hereunto set my hand.

WM. J. KAUFFMAN.

Witnesses:

CHARLES KRIOHBAUM, HENRY W. HARTER.

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