US510331A - Type-writing machine - Google Patents

Description

(No Model.)

T.j J. DOWNING. TYPE WRITING MACHINE.

No. 510,331. Patented Dc. 5, 189s.

UNITED STATES PATENT OFFICE.

THOMAS J. DOWNING, vOF LINCOLN, ILLINOIS.

TYPE-WRITING MACHIN E.

SPECIFICATION forming part of Letters Patent No. 510,331, dated December 5, 1893.

Application filed December 20, 1892. Serial No. 455,767. (No model.)

To all whom t may concern:

Be it known that I, THOMAS J. DOWNING.,1

a citizen of the United States, residing at Lincoln, in the county of Logan and State of Iliinois, have invented a new and useful Attachment for Type Writing Machines, of which the following is a specification.

My invention relates to a device for turning the platen in adjusting the paper in a type-writing machine. I

It is the common practice in operating such machines as the Remington, Caligraph and others provided with a revoluble platen, mounted upon a carriage, and a hand operated spacing lever to rotate the platen, to introduce and set the paper by means of the said lever by which the paper can be moved only forwardly or by turning they platen by hand, the fingers of the operator frequently coming in contact with the paper. This practice occasionaily, if not frequently, causes l soiling of the paper besides being inconvenient, slow and uncertain. Therefore, it is the object of this invention to provide an improved and simple device adapted to be connected to the roller mechanism of machines such as above mentioned whereby the platen may beturned, reversed and adjusted at will to set the paper, without reference to the spacing lever and withoutl requiring the operator to touch the platen or paper, such device being so constructed as to be attachable to machines now in use, and the attachment being accomplished without altering or modifying the construction of the machines. n

Furtherobjects and advantages of my invention will appear in the following description and the novel features thereof will be particularly pointed out in the claims.

Referring to the drawings: Figure 1 is a perspective View of the carriage of a typewriting machine, with the invention applied thereto in the operative position. Fig. 2 is a plan view of a portion of the same, partly broken away to show the manner of attachment. Fig. 3 is aperspective View of the attachment, with its members detached. Fig. tis a detail sectional view, showing the spindle of the milledhand-wheel and the means for the attachment of the latter thereto. t

1 represents the frame of the carriage, 2 the side-bar of such carriage, 3 the platen,

and 4. the spacing-lever, all of these parts being of the ordinary and well-known construction and arrangement. Furthermore, 5 repre- 5 5 sents the spindle of the platen, such being secured at its extremities to the side-bars of the carriage, and 6 represents an end plate which is secured to and caps the end of the platen.

Secured to the end of the platen, as shown 6o in Fig. 2, is a disk 7, which is provided with a spur-wheel 8.v This disk is provided with a central aperture 9 through which projects the spindle of the platen, and by this construction it will be seen that the device is capable of attachment to any machine of this class now in use, for the reason that it is simply necessary to withdraw the screws which secure the end-plate 6, fit the disk over thespindle and reinsert the screws so as to engage 7o and secure the disk and plate to the platen, as indicated in said Fig. 2.

10 represents a bracket which is adapted to be attached by means of a screw or screws 11 to the upper side of the side-bar of the carriage, such bracket being provided with depending flanges 12 12 to engage the-edges of the side-bar, and in this bracket is formed a bearing 13.

lil'represents a spindle which is mounted 8o in the bearing 13 and is provided at one end (its inner end) with a pinion 15 whose teeth mesh with the teeth of the spur-wheel 8, and upon whose outer end is fitted a milled handwheel 16. The bore of the hu'b of this hand- 8 5 Wheel is provided with a key 17 which engages a groove or flat 18 in the side of the spindle to prevent independent rotation, and the terminal of the spindle is reduced and threaded to receive a securing nut 19, to hold .9o the hand-wheel in place. Thus, it will be seen, that the platen is provided with aspur- Wheel which is concentric with its spindle, and the hand-wheel carries a pinion which meshes with such spur-wheel to enable the platen to be turned and reversed at will to adj ust the paper. It will be seen, further, that this device may be applied to the carriage when the latter is manufactured, or may be attached to the carriage of any ma- 'roo chine, of this class,lnow in use.

The form of the bracket, 10, is immaterial to my invention, and must be constructed to accommodate the form and arrangement of the particular `class of type-writer to which it is to be applied. For, instance, in certain machines the side-bars of the carriage are more remote from the ends of the platen than in others, thus necessitating an extended bracket for attachment thereto. ture, however, does not form 'an essential part of my invention; itis necessary, simply,

to provide a bracket, capable Iof being at,y

tached to the frame of the carriage and having a bearing for the spindle of the device.

The advantages gained by the use of this attachment,whereby theplaten may lbe turned in either direction without requiring the aid of the fingers in the reverse movement, without the ractual grasping of the platenor paper, and without.ca'usingthe jerking lof the platen and the uncertain feeding and'set'ting of the paper as when the spacing-lever is employedfor vthis pi1rpose,`will`be apparent to those 'skilled yin this art without further explanation herein. y p

Changes in the torm,proportion anfdminor details `of construction and arrangement may be resorted to without'departing from the spirit of the invention or sacrificing any Ior' *the ad vantages thereof.

The attachment may be appliedto either end of the carriage and may be arranged either in vi'r'ont- `or in rear of the spindle ef th-e platen, to suitthefs'tyle of machine and the convenience of the operator. p

Although the particular form of the handwheel does not form an essential fea-ture `oi' my invention, that shown in the vdrawings is convenient 'and preferable, the same having a perforated or open-Work web 20 provided at its periphery "with an outwardexten'ding flange 21 whose -outer surface is milled, as shown. It should be understood, furthermore, that while I have described my invention in connection with a particular form fof type This feawriter in which for convenience the spurwheei is shown and described as attached to the end of the platen, it is not essential to my invention that this precise arrangement be followed.

It is desirable *that the attachment be connected 'to a feed-roller, and preferably the controlling feed-roller, namely; that roller to which is applied the power in spacing and feeding the paper. In the form of machine illustrated in the drawings such feed-roller is the platen, but this varies in different machines. y

Having th'us described my invention, what I claim, and desire to secure by Letters Patent, is

l. Asa new articleof manufacture an attachment ifor `Ya roller platten ty pe-writin g inachin'e kcminprisinga spur-wheel adapted to be fixed 'toene fend ioi? the platen, a bracket and a'hand-Wheel carried by the bracket and provided With a pinion meshing with said spur- Wheel, whereby the platen may be set, advanced or reversed, without grasping the same, substantially as specified.

2. An attachment fora roller 'platcntypewriting 'machine comprising 'a spur-Wheel fixed to one A'end of the platen, a bracket and means for securing'the same to the frame of the machine, a hand-wheel having its `spindle mounted ,ina bearing in said bracket, and a pinion carried bythe Vspindle of the hand- Wheelandmeshing with said 'spur-wheel, substantially as specified.

In testimony that I `claim the foregoing 4as my own I have hereto aiixed `my signature in the presence Aof 'two witnesses.

THOMAS J. DOWNING.

Witnesses:

E. G. KING, L. B. STRINGER.

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