US1346851A - Typewriting-machine - Google Patents

Description

J. E. SIMPSON.

TYPEW'RITING MACHINE.

APPLICAHON FILED usm I919.

1,346,851. 7 Patented July 20,192

UNITED STATES PATENT OFFICE.

JAMES E. SIMPSON, OF BROOKLYN, NEW YORK, ASSIGNOR '10 TYPEWRITER ACCESSORIES 00., INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

vice,'which can be applied quickly and con-.

veniently to a machine by the user thereof, without requiring the services of a skilled mechanic for its application.

Further my improvements comprise the provision of controlling means whereby the ribbon is actuated intermittently through the operation of the type bars, which in their printing strokes cause the ribbon to be moved into contact with an inking device that communicates ink to the ribbon while said ribbon is moving under the influence of the ribbon feed mechanism; and, a still further feature of improvement consists in the provision of means whereby the ribbon controlling means are rendered inactive relatively to the type bar movements.

In the drawing:

Figure 1 is a plan view of a portion-of an Underwood typewriting machine, to which my improvement is applied.

Fig. 2 is a detail, inside elevation, of the re-inking device, and

Fig. 3 is a perspective detail of the same.

In describing'my' invention with reference to the accompanyin drawing, let 1 indicate a portion of the frame of an Underwood typewriting machine, 2 the platen, 3 the guide jaws for the type bars to center the types at the printing point, lthe segment in which the type bars are pivoted, 5 the type bars with types 6, and 7 the ribbon spool at one side of the machine, having ribbon 8.

My improved ribbon inking or revivifying means consists of a device adapted to be secured to a fixed part of the machine in such manner that it may function to impart ink or moisture to the inking ribbon with the operation of the machine, or maybe rendered inoperative in that respect, the putting into and out of operation being me- Speoification of Letters Patent.

Patented July 20, 1920.

Application filed August 7, 1919. Serial No. 315,895.

chanical actions which are under the control of the operator.

As shown in the drawing the device has a base portion 9 which is supported in a horizontal position by means of a. depending bracket 10, which, in an Underwood machine, may be secured to the machine by the left hand, screw that is employed to hold the segment 4 in place, while an upwardly and forwardly inclined arm 11, extending frombase 9, has a horizontally disposed end portion 12, with an under turned, spaced finger 13, to provide lodgment, between said end portion 12 and finger 13, for the forwardly projecting portion of the left hand guide jaw 3, so that the device becomes rigidly secured between its engagement with the machine by bracket' 10 and its engagement with the guide jaw 3. The method of adjusting and securing the device in position for; use is thus both simple and effective.

Extending upwardly from a plate 14,

which is pivoted at 15 to the base 9, is a pivot 16, over which is slipped a washer 17, having a' flange, to revolubly support a cylindrical pad or roller 18 of absorbent material, which ma be saturated with ink for re-inking purposes. The pivot 16 projects through a slot 19 in .base 9, and the plate 14 has means, as a struck up lug 20, to engage re-' spectively with opposite edges of slot 19, to thus limit the swinging movement of plate 14 and pivot 16 in each direction. Also, the

base 9 has on its under surface, the indentations 21, with which a slight excre'scence or raised punch mark 22 on the upper surface of plate 1 1 will register, to frictionally engage and localize said plate in each of its two set desired positions at the limits of its swinging movements. The purpose of these movement limiting means will be described hereinafter.

The roller 18 may be retained in its position upon pivot 16 by a; cover plate 23, screwed upon the end of [pivot 16,. which latter is threaded for that-purpose.

Upstanding from the 'base'9 is a ribbon guide 24, which is located'to the left of 26, but before reaching the guide 25L it passes between the surface of the roller 18 and an upstanding portion of a slender ,though stiff wire strand 27, whose opposite end engages, at 28, with the heel 29 of a pawl 30, that is pivoted, at 31, to the end portion 12 of arm 11; said pawl being adapted to lie either in or out, as desired, of the path of the type bars in their operation to imprint the types, through the ribbon, upon a work sheet on the platen. Said wire strand has the jog 32 in its length to spacingly inclose the lug.2(), so that it serves to co-actwith said lug, under the tension of the ribbon coming from the spool, to hold said pawl, in the two set positions of plate 14, either in or out of the path of the type bars. A handle 33, extending forwardly from plate 14, permits the manipulation of said plate to and from its respective set positions.

Thus, it will be seen that the operation of key levers, as 34, which serve to actuate the type bars 5, has the effect of rocking the pawl 30 every time a type -is moved by its type bar between the guide jaws 3 to create an impression; also that in this rocking movement of pawl 30 the strand 27 is drawn inwardly, and, at its upstanding portion where it engages the ribbon 8, moves said ribbon at that point into contact with the peripheral surface of roller 18, to moisten the ribbon.

As stated, the roller 18 is movable with its plate 14 into two set positions, it being operative in one of those positions, and inoperative in the other. In Fig. 1 the roller 18 is shown in its operative position, in which its surface is very near to the upended portion of wire 27 which is a ribbon guide and controlling device, so that a very slight movement of said ribbon guide, toward the roller, causes the ribbon to make contact with said roller and thus to receive moisture or ink therefrom. This slight motion of the guide is produced by a rocking movement being in'lpa'rted to pawl 30 as it is struck by a passing type bar. It will be appreciated that the ribbon itself, coming from the ribbon spool, exerts a light tension upon the guide which has the effect of with-- drawing the ribbon from contact with the roller surface immediately the pawl is released by the retiring type bar, and also that under this ribbon tension the strand 27 acts on the pawl 30 to. rock the latter out again in the path of the next striking type bar. Therefore the ribbon inking or moistening operation is intermittent, and governed, in the operation of the machine, through the actuation of its type bars.

When a ribbon is new it may not be necessary to have the re-inking means in operation, and therefore the roller 18 may be swung, by its plate 14, into its inoperative position, in which the roller 18 is removed a greater distance from the ribbon gu1de,and also the lug 20, having engaged the jog 32 in strand 27, has caused said strand to rock pawl 30 out of the path of the type bars, so that no movement is imparted to the ink ribbon in the operation of the machine. In this shifted position of the plate 14 and roller l8'the latter is spaced too far from the ribbon to contact with the latter in the operation of the machine, so that the ribbon receives no ink or moisture from the roller in the inactive position of the device.

The guard post 25 is intended to keep the ribbon out of contact with the roller 18 except at the point where it is held by the guide member 27.

Vhile my improved moistening and inking device is here shown in connection with an Underwood machine. it may obviously be adapted for use with other makes of typewriting machines.

Variations may be resorted to within the spirit and scope of my invention and parts thereof used without others.

I claim 1. In a typewriting machine having a ribbon movable across the printing point and a guide for the types, the combination of a revoluble inking pad, means for supporting said pad ,in proximity to said ribbon, and meanspivoted near said guide, to be actuated by the type bars in moving the types to the printing point, to intermittently move said ribbon into contact with said pad.

2. The combination, with a typewriting machine having a ribbon movable across the printing point and a guide for the types, of a revoluble inking pad, a movable support therefor, means pivoted near said guide to be in the platen striking path of the type bars, and means engaging said pivotal means and the ribbon to intermittently move the ribbon into contact with said inking pad by the operation of the type bars.

3. The combination, with a typewriting machine having a ribbon movable across the printing point, of a revoluble inking pad, a support therefor, means of adjustment for said pad whereby it may be set in operative or inoperative position relatively to said ribbon, pivotal means. in the platen striking path of the type bars, and means engaging said pivotal means and the ribbon to intermittently move the ribbon into contact with said inking pad by theoperation of said type bars.

4. The combination, with a typewriting machine having a ribbon movable across the printing point, of a revoluble inking pad, a support therefor, means of adjustment for said pad whereby it may be set in operative or inoperative position relatively to said ribbon, pivotal means in the platen striking path of the type bars, means engaging said pivotal means and the ribbon to intermittently move the ribbon into contact with said inking pad by the operation of the type bars, and means for shifting said pad to an inoperative position relatively to said ribbon.

5. The combination, with a typewriting machine having a ribbon movable across the printing point, of a revoluble inking pad, a support therefor, means of adjustment for said pad whereby it may be set in operative or inoperative position relatively to said ribbon, pivotal means in the platen striking path of the typevbars, means engaging said pivotal means and the ribbon to intermittently move the ribbon into contact with said inking pad by the operation of the type bars, means, for shifting said pad to an inoperative position relatively to said ribbon, and means actuated by said pad shifting means to remove said pivotal means from the path of the'type bars.

6. The combination, with a typewriting machine having a ribbon movable across the printing point, of an attachment comprising a base, said base having a bracket at one end for connection to the machine frame, and an extension at the opposite end for engagement with the type bar guide jaws, a plate pivoted to said base, said plate movable to two set positions, a pivot extending upwardly from said plate, an inkin roller mounted on said pivot, a ribbon gui e upon saidbase, a strand of stiff material to hold said ribbon in proximity to said roller when the plate which supports said roller is in one set position, and a pawl pivoted to said base extension to lie operatively in the path of the type bars, said strand engaging said pawl to communicate movement from the latter when struck by a type bar, to thus draw the ribbon against its tension into contact with said inking roller.

7. The combination, with a typewriting machine having a ribbon movable across the printing point, of an attachment comprising a base, said base having a bracket at one end for connection to the machine frame, and an extension at the opposite end for engagement with the type bar guide jaws, a plate pivoted to said base, said plate movable to two set positions, a pivot extending upwardly from said plate, an inking roller mounted on said pivot, a ribbon guide upon said base, a strand of stiff material to hold saidribbon in proximity to said roller when the plate upon which supports said roller is in one set position, a pawl pivoted to said base extension to lie, operatively.

in the path of the type bars, said strand engaging s aid pawl to communicate movement from the latter when struck by a type bar, to thus draw the ribbon against its tension into contact with said inking roller, and means for shifting said plate and the roller out of operative proximity to said ribbon, said means also serving to move said pawl out of the path of the type bars.

Signed at the borough of Brooklyn, in the county of Kings and State of New York, this 22nd day of July A. D. 1919.

JAMES E. SIMPSON

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