US779152A - Type-writing machine. - Google Patents

Description

PATENTED JAN. 3, 1905.

J. PELBEL.

TYPE WRITING MACHINE. APPLIOATION FILED SEPT. 13, 1904.

2 SHEETS-$112.31 1.

INVENTUR= PATENTEI] JAN. 9, 1006.

J. PELBEL.

TYPE WRITING MACHINE.

APPLICATION FILED SEPT.13, 1904.

2 SHBETS-SHEBT 2.

UNITED STATES Patented. January 3, 1905.

PATENT 'OEErcE,

J AOOB FELBEL, OF NEI/V YORK, N. Y., ASSIGNOR TO UNION TYPEWRITER COMPANY, or JERSEY CITY, JERSEY.

NEW JERSEY, A CORPORATION OF NEW TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 779,152, dated January 3, 1905.

I Application filed September 13, 1904. $eria1N0. 224,283.

T0 all whom it may concern;

Be it known that I, J AooB FELBEL, a citizen of the United States, and a resident of the borough of Manhattan, city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

This invention relates to improvements in the carriage-feed mechanisms of type-writing machines which contain a system of upwardlyextending type-bar-actuating levers or a system of levers whose movements are measured by angles decreasing in size from the middle to the sides of the system, such systems of levers being well known in certain front-strike writing-machines.

The object of the invention is to provide for the operation of the universal bar by means of these levers in sucha way as to improve the action of the carriage-feed mechanism and to facilitate the regulating thereof.

The invention consists in the several features of construction, combinations, and arrangements of parts, all of which are hereinafter fully described,'and particularly defined in the appended claims.

In the accompanying drawings, in which like reference-numerals designate like parts in different views, Figure l is a central vertical section of the main part of the frame and portions of the mechanism of a front-strike type-writing machine embodying the invention; Fig. 2, a rear and sectional elevation of portions of the mechanism shown in Fig. 1

and of other key-levers and sublevers, the plane-of the section being indicated by the lines a m, Fig. 1; Fig. 3, a side elevation of vtwo of the sublevers, the positions to which riage-feed devices of known construction and other known complemental mechanism.

The frame of the machine is composed of the base 1, posts 2, and top plate 3, the posts being attached to the base and the top plate being secured on the posts. In the rear part of the base, which is covered between and behind the rear postswith a flat portion 4, is a fulcrum-plate 5, which is fastened to projections 6 on the under side of the portion 4. The length of this fulcrum-plate is a little greater than the width of the system of keylevers at their rear ends, and at each end of the plate is a support 7 which may be a flange formed on the plate 5, and midway between the ends of the plate is a fixed lug 8. In the supports 7 and lug 8 is secured a rod 9, which extends through the lug and into holes in the supports 7. Each key-lever. 10 has in it a transverse slot or notch 11, through which the rod 9 extends, the key-lever being held in contact with the fulcrum-plate 5 by a spring 12, attached to a support 13 and engaged with a hook 14, pivoted on the key-lever. The portion 15 of the upper edge of the key-lever is curved, as shown in Fig. 1, and when the key-lever is in its normal position it makes contact with the plate 5 near the front edge of the plate only and at the front endof the curved portion 15. The key-lever is then also in contact with a pad 16, secured to the front cross-bar 17 of the frame. When a keylever is actuated by pressure applied to the finger-key 18, the curved portion 15 of the lever rocks on the under surface of the plate 5, the front end of the spring 12 being drawn downward and the lever being prevented from moving lengthwise by the rod 9 and slot 11. The lever is restored to its normal position by the upward action of the spring 12.

The sublevers 19 are pivoted to the keylevers 10 and extend upward therefrom behind the type-bars. The short sublever shown in Fig. 1 is one of the central sublevers of the system. It is pivoted by a pin 20 to the key-lever and has near its lower end a slot 21, through which extends a rod 22, which is fixed in the base under the key-levers. The upper end of the sublever is connected by a link 23 with the type-bar 24, the link being pivoted at its rear end to the sublever by a pivot 25 and at its front end to the type-bar by a pivot 26. Each other sublever of the system is pivoted by a pin 20 to its appropriate key-lever and has a slot 21, through which the rod 22 extends, and is connected at its upper end by a link 23 with its appropriate type-bar. The distances between the pins or pivots 20 and the rod 22 increase from the middle to the sides of the system, the pins 20 being so arranged that the upper ends of the sublevers move through equal or substantially equal distances when the type-bars are drawn from their normal to their printing positions. The -sublevers extend through a guide or comb, which is composed of a row of pins 27, fixed in a bar 28, this bar being attached to posts 29 by screws 30.

The type-bars are pivoted to hangers which are secured to a segment 31, which contains slots 32 and which may be movable up and down by well-known means for upper-case and lower-case writing. Each of the hangers has a flat stem 33 and a head 34, to which a type-bar is pivoted by a pin 35. The stem 33 of each hanger extends into one of the slots 32 in the segment, the head 34 of the hanger resting on the concave surface of the segment behind the slot, and the hanger is fastened to the segment by a screw 36, inserted in a threaded hole in the front of the segment and screwed tightly against the end of a notch 37 cut in the stem of the hanger. A coil-spring 38, whose function is to help restore the type-bar to its normal position, is attached at its ends to the type-bar, and hanger. Between the front posts 2 of the frame is a type-bar rest 39, which .is supported by rods attached to the segment 31, one of these rods 40 being shown in Fig. 1.

The platen 41 of the machine is mounted in a carriage 42, which travels on balls 43, confined in grooves formed in fixed bars 44 and 45 and in the bars 46 and 47 of the carriage. A spring-pressed feed-rack 48, attached to an arm 49 and to another similar arm, these arms extending between the bars 46 and 47 and being pivoted to the ends of the carriage, normally engages with a pinion 50, fast on the shaft of an escapement-wheel 51, this shaft having a bearing in a block 52, which is attached to the top plate 3 by screws. Below the escapementwheel 51 is a rock-shaft 53, on which is an arm 54, carrying a holding-dog 55 and a stepping-dog 56, arranged to act on the teeth of the escapement-wheel in a well-known way. The rock-shaft 53 is mounted on pointed screws 57, which are held fast by lock-nuts in lugs 58, formed on a fixed supporting-plate 59.

Substantially the mechanism above described is contained in Monarch type-writing machines heretofore constructed and illustrated in numerous patents.

The universal bar which constitutes part of the invention is preferably curved from end to end and provided with adjustable contact devices on which the sublevers may act to impart motion to the bar. The preferred form of the universal bar is shown in Figs. 1 and 2. This bar is hung from a supporting-frame 61 by a pair of parallel links 62. The frame 61 is fixed on the top of the bar 28 by the screws 30, and on this frame at its ends and close to its rear margin are ears 63, to which the links 62 are pivoted by screws 64. The lower ends of these links are pivoted by screws 65 to angular extensions 66, formed on the bar 60 at its ends. The adjustable contact devices 67 are preferably screws fitting in threaded holes in the, universal bar proper, through which they extend, and provided with lock-nuts screwed thereon against the back of the bar. On the bar 60 are formed two pairs of rearwardly-extending ears 68, and in each pair of these ears is secured the front end of a rod 70, a pin 71 passing through an eye on the rod and through a sleeve or sleeves 7 2, to which the rod is attached or by which it is confined on the pin in the position shown. Each rod is composed of two sections connected by a nut 73 and may be lengthened or shortened by turning this nut. To projections 74 on the rock-shaft 53 are attached arms 75, which are united at their lower ends by a cross-bar 76, and the links 70 are pivoted at their rear ends to these arms. A restoringspring 77, which acts against the rocker-arm 54, is confined between this arm and the supporting-plate 59.

When a finger-key is depressed, the pivot 20 of the sublever mounted on the key-lever is forced downward, causing the upper edge of the slot 21 in the sublever to act on the rod 22, and the upper end of the sublever moves backward, acting on the type-bar through the link 23 and draws the type-bar to its printing position. Since the upper ends of all the sublevers move through equal or substantially equal distances in actuating the type-bars, the movements of these levers are measured by angles which decrease in size from the middle to the sides of the system, so that points at the same height on the levers above the level of the pivots 20 move backward through unequal distances which decrease from the middle to the sides of the system as do the angles of measurement. In order, then, to render every lever operative on the universal bar from the beginning to the arranged in the paths of the sublevers at elein which the preferred form of the universal bar is illustrated. The arrangement shown in these figures is such that each contact device is in the path of the sublever in front of it and is or may be in contact with the back of the sublever when the universal bar is in its normal position and thateach sublever acts on the universal bar at the right distance from the pivot 20 of the sublever or at the right elevation to impart to the universal bar the same movement which is imparted to it by any other sublever. The elevation of the contact devices at the ends-of the series is indicated in Fig. 3 by the upper double arrow and that of a contact device at the middle of the series by the lower double arrow. These arrows are of equal length, which is that of the movement imparted to the universal bar by either the shorter or longer lever when each acts from the beginning to the end of its movement upon the bar, each lever being movable by-the depression of a linger-key from its normal position shown in full lines to the other position shown in dotted lines.

The universal bar is forccd backward by the action of the sublevers on the contact devices, the links 62 swinging on the pivots 64 and turning on the pivots 65. The rods 70, pushing on the lower ends of the arms 75, rock the dog-rocker 53 from its normal position, to which it is afterward returned by its restoring-spring 77. With the return movement of the dog-rocker the carriage moves forward a letter-space distance, and the universal bar is restored to its normal position by the action of the arms 75 on the rods 70, when the contact devices 67 again make contact with or rest in proximity to the backs of the sublevers from side to side of the system.

It will be understood that each contact device may be either in contact with the sublever or at a short distance therefrom when the levers and universal bar are in their normal positions, so that each lever may be made to act on the universal bar when the lever begins to move or afterward when the inertia of the type-action has been overcome. These contact devices may be readily adjusted to effeet the release of the carriage at the desired moment during the return movement of any type-action and to bring each device into contact with the lever operative thereon. or into the proper position with respect to the lever when the system of levers and universal bar are in their normal positions. If an escapement having reversed dogs should be used, the release of the carriage during the printing movements of the type-actions could be regulated to suit different operators by adjusting the contact devices.

For the universal bar described the straight bar 78 (shown in Fig. 4) might be substituted. This bar is provided with angular extensions 79, adapting it to be pivoted to the links 62, and with pairs of ears 80, to which the forward. ends of the rods may be connected,

and with holes 81 to contain the screws of contact devices 67. Since all of the sublevers would act on this bar at the same elevation, only the side levers of the system could begin their movements before acting on the universal bar, and the nearer the middle of the system any lever might be the greater would be its motion before it could act on the universal bar. The preferred form of universal bar, it will be seen, is the more desirable form, for the sublevers act thereon in producing a feed movement of the carriage under mechanical advantages averaging greater than those of a like system of sublevers acting on a bar of the other form or on contact devices arranged on a straight line.

By this invention it is possible to operate the feed-dogs (or other escapement devices used) uniformly for all type-bars, thereby making the carriage-feed as fast for one bar as another, a great disideratum and one long sought. In machines now on the market it will be found that the escapement devices are acted upon at varying times relatively to the movements of the typebars, or, in other words, that the let-off of the carriage-feed occurs when the type-bars are at different distances from the printing-point. The farther a returning type-bar is from the printingpoint at the let-ofl moment the slower will be the carriage feed movement, and when there is a variation of the let-off throughout thesystem of type-bars the carriage-feed will vary accordingly, and in the operation of writing the machine will be no faster than the slowest type-action.

. Various changes be made in the mechanism above described, or some parts thereof may be used without others. For example, certain advantages of the invention might be obtained if the contact devices were attached to the sublevers, as shown in Fig. 5, instead 'of to the universal bar; but the devices 67 are more easily adjustable on the universal bar than they would be on the sublevers, for they can be conveniently reached from the back of the machine without disturbing the bar, whereas if they were on the levers it might be necessary to remove the bar from the machine to adjust the devices. Besides, such devices can be attached to the universal bar more readily than they could be to the levers. It is therefore preferable to mount the contact devices on the universal bar, as they are shown in Figs. 1 and 2 of the drawings. The

contact devices may be of other form or construction from that shown.

What I claim as new, and desire to secure by Letters Patent, is

1. in a type-writing machine, the combination of a system of type-bar-actuating levers whose movements are measured by angles decreasing in size from the middle to the sides of the system, a universal bar, anda series of adjustable cooperating contact devices, the distances of said devices from the pivotal axes of the levers increasing from the middle to each end of the series.

2. In a type-writing machine, the combination of a system of upwardly-extending typebar-actuating levers whose movements are measured by angles decreasing in size from the middle to the sides of the system, anniversal bar, and a series of adjustable cooperating contact devices arranged at elevations which increase from the middle to the ends of the series.

3. In a type-writing machine, the combination of a system of upwardly-extending typebar-actuating levers, and a universal bar movable toward and from the back of the machine and having on it a series of adjustable contact devices normally extending into the paths of the levers at elevations which increase from the middle to the ends of the series,

4. In a type-writing machine, the combination of a system of upwardly-extending typebar-actuating levers, and a universal bar movable toward and from the back of the machine behind the levers, and having on it a series of adjustable contact devices secured at elevations which increase from the middle to the ends of the series and normally extending in front of the bar into the paths of the levers.

5. In a type-writing machine, the combination of a system of upwardly-extending typebar-actuating levers whose movements are measured by angles decreasing in size from the middle to the sides of the system, and a universal bar having on it a series of adjustable contact devices normally extending into the paths of the levers, the bar diverging from the pivotal axes of the levers on each side of the middle of the bar.

6. In a type-writing machine, the combination of a system of upwardly-extending typebar-actuating levers whose movements are measured by angles decreasing in size from the middle to the sides of the system, and a universal bar having on it a series of adjustable contact devices normally extending into the paths of the levers, the middle and ends of the bar being at different elevations.

7. In a type-writing machine, the combination of a system of upwardly-extending typebar-actuating levers whose movements are measured by angles decreasing in size from the middle to the sides of. the system, and a universal bar having on it a series of adjustable contact devices normally extending into the paths of the levers, the bar extending upward from the middle to the ends of the bar.

8. In a type-writing machine, the combination of a system of type-bar-actuating levers whose movements are measured by angles decreasing in size from the middle to the sides of the system, and a universal bar having on it a series of adjustable contact devices on which said levers are operative to actuate the universal bar, the distances of said devices from the pivotal axes of the levers increasing from the middle to each end of the series.

9. In a type-writing machine, the combination of a system of upwardly-extending typebar-actuating levers whose movements are measured by angles decreasing in size from the middle to the sides of the system, and a universal bar having on it a series of adjustable contact devices normally extending into the paths of said levers at elevations which increase from the middle to each end of the series.

10. In a type-writing machine, the combination of a system of upwardly-extending typebar-actuating levers whose movements are measured by angles decreasing in size from the middle to the sides of the system, and a universal bar operative by the action of the levers thereon, the bar being pivoted at its ends to a pair of parallel links and said links being pivoted to a fixed support above the bar, and the bar being connected between its ends with the escapement.

11. In atype-writing machine, the combination of a system of upwardly-extending typebar-actuating levers, and a universal bar operative by said levers, the bar being pivoted to a pair of parallel links and said links being pivoted to a fixed support, and the bar having on it a series of adjustable contact devices extending into the paths of the levers at elevations which increase from the middle to the ends of the series.

12. In atype-writing machine, the combination of a system of upwardly-extending typebar-actuating levers, and a universal bar 0perative by said levers, the bar being pivoted at its ends to a pair of parallel links which are pivoted to a fixed support above the bar, and being connected between its ends with the escapement and having on it a series of adjustable contact devices extending into the paths of the levers at elevations which increase from the middle to the ends of the series.

13. In a type-writing machine, the combination of a system of upwardly-extending typebar-actuating levers whose movements are measured by angles decreasing in size from the middle to the sides of the system, and a universal bar operative by said levers acting on the bar at elevations which increase from the middle to the sides of the system of levers, the bar being pivoted to a pair of parallel links which are pivoted to a fixed support.

1a. In atype-writing machine, the combination of a system of upwardly-extending typebaractuating levers whose movements are measured by angles decreasing in size from the middle to the sides of the system, and a universal bar operative by said levers actlng on the bar at elevations which increase from New York, in the county of New York and the middle to the sides of the system of levers, Stateof New York, this 12th day of Septem- 10 the bar being pivoted at its ends to a pair of ber, A. D. 19%.

parallel links and -said links being pivoted to x V 5 a fixed support above the bar, and the bar be- JACOB FELBEL ing connected between its ends with the es- Witnesses:

capernent. E. M. VVELLs,

Signed in the borough of Manhattan, city of M. F. HANNWEBER.

Images