US1146578A - Type-writing machine. - Google Patents

Description

W. P. KIDDER.

TYPE WRITING MACHINE.

APPUCATION FILED APR.22-,1909.

1, 1 4E6,5?8 Patented July 13, 1915.

2 SHEETS-SHEET w. P. KIDDEH. TYPE WRITING MACHINE. IAPPLICATIION-FILED APILZZ, I909- Patsnted July 13, 1915.

2 SHEETS-SHEET 2.

. nvATm nnnuhn" mp WTTEU STATES PATENT @FFTCE.

WELLINGTON PARKER KIDDER,

015 BOSTON, MASSACHUSETTS, ASSIGNOR, BY

ASSIGNMENTS, TO THE NOISELESS TYPEWRITER COMPANY, OF MIDDLETOWN, CON,- NECTICUT, A CORPORATION OF CONNECTICUT.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented July 13, 1915.

Application fi1ed April 22, 1909. Serial No. 491,530.

To all whom it may concern:

Be it known that I, WELLINGTON P. KID- DER, a citizen of the United States, residing clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to typewriting machines and more particularly to that type of machine wherein printing is effected by pressure rather than by imtpact or 'concussion.

One of the objects of the present invention is to provide a new and improved formof platen.

Another object is to provide a new and improved form of support for the paper upon which printing has been effected whereby erasures may be made with greater facility than inmachines of this type as hitherto constructed.

Other objects will be, in part obvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction hereinafter set forth, and the scope of the application of which will be indicated in the following claims.

In the accompanying drawings, wherein is illustrated one of the various possible embodiments of my invention, Figure l is a longitudinal sectional view of the machine, showing the devices which constitute the present invention; Fi; 2 isa plan view of Fig. .1.

Similar reference characters refer to similar parts inboth views of the drawings.

Referring now to the drawings, 1 represents the framework of the machine supporting the top plate or bed 2 upon which rests the type bars 3 and across which they are projected when they a 'eactuated to effect printing. A top plate 4 acts as a guide for the upper edgesof the type bars and the forward ends of said bars are guided to the proper position upon the platen by means of a vertically-disposed guide 5 secured to the front end of the bed 2. The front .wall of the machine is provided with a ledge 6,

link upon which are supported blocks 7. These blocks support the type bar actions which are connected by means of links 8 to the type bars 3 and by means of suitable connecting bars or links 9 to the key levers 10.

To the frame of the machine 1 is attached a bracket 11 as by means of screws 12, and from either end of this bracket extends an upright 13 and 14. These uprights are connected, as by means of a bar 15, preferably of truss form, as shown, so as to furnish a rigid construction which will not yield under the pressure exerted by the type bars when they are projected'against the platen. The bar or truss 15 intermediate its ends is provided with a beveled face 16 against which rests a block 17 having an oppositely beveled face 18. This block is provided with suitable ears or dovetails which receive the carriage. block 19, block 19 being in turn provide extension scribed. gages a threaded rod 20 which may be rotated by means of a knob 21 whereby the wedge block 17 will be shiftedv sidewise a greater or less distance, thus moving the face 22 of the block 17 forwardly or rearwardly with respect to the beveled face 16 of the truss. i The carriage 23 rides upon a rail 24, and the platen frame 25 slides vertically upon the carriage and is shiftable for different case printing by means of a block 26 and 27 connected with the shifting mechanism, not shown herein, block 26 riding in a channel bar 27 which extends longitudinally of the platen 25 is composed of a pair of side pieces 28 and 29 respectively, connected at their upand adjacent the platen is provided a feed roll 33. Plate 30 is also provided with a longitudinally extending aperture 34 through which extends a paper table 35, said paper table being pivoted to the platen frame as by means of pivot screws 36. The paper table at its forward end supports pawith ways for receiving a required of the carriage hereinafter de-' The block 17 is tapped out and en' frame. The platen frame I ioo . be sufiiciently accurate.

per feed rolls 37 which cooperate with the feed; roll 33 to feed the paper which is passed downwardly through aperture 3%, forward between the rolls and then upward over the platen. A leaf spring 38 presses the lower end of the paper table upwardly and holds the feed rolls 37 carried thereby in engagement with the feed roll 33 carried by the platen carriage. A knob 39 is carried upon the feed roll shaft by means of which said roll 33 may be turned to feed the paper. A curved guide plate %1 depends from the under side of the plate 30 and co.- operates with the paper table in guiding the paper betweenfeed rolls. 33 and 37.

4 2 indicates an erasing table which issupported upon the upper surface of plate 30, the forward end of this plate being preferably curved as shown.

43 indicates a graduated scale on the upper part of the center tie 15 substantially parallel with the face 16. This scale may be divided into any number of suitable parts,

each denoting a distance between the type' bar at the endof its stroke and the platen equal to the thickness of one sheet of typewriter paper. Cooperating with the scale 43 is a pointer 44 on the wedge block 17, whereby the operator will know by the number indicated on the scale the space existing between the extended type bar and the platen. There is also mounted on the wedge block 17 a gaging device for adjusting the platen when paper of an unusual thickness is used when the scale iiidicator would not This device com prises an extended arm 15 adapted to engage with a fixed block 46 on the upper part of the center tie 15, when the pointer 44: indicates zero on the scale 43. As the wedge block 17 is moved to the left on rotation of the shaft 20 by the knob 21 the arm 45 moves away from the block 46 a distance corresponding to the number indicated on the scale 43, thus when it is desired to gage a certain thickness of paper or the thickness of several sheets, the paper is inserted between the gaging surfaces of the members 45 and 46, which have previously been separated. Thegaging face 45 is then closed I upon the paper, pressing it against the gaging face of the block 4L6 by moving the wedge member 17 to the right. When the gaging faces have closed upon the paper withthe proper pressure, the paper is then slid from between said faces and inserted in the carriage, which will be positioned properly for printing with the desired degree of pressure.

'Having thus described'the construction of this embodiment of my invention, the operation thereof may now'be understood. When.

it is desired. to change the position of the platen with respect to the normal printing. plane,'such operation may be conveniently effected by merely turning knob 21 which moves the wedge block 17 along the beveled surface 16 of the truss, thereby moving the entire carriage with the platen forwardly or rearwardly. The paper may be conveniently inserted through aperture 34: whereupon it will be grasped by the feed rolls and fed forwardly and upwardly over the platen. It will, accordingly, be seen that I have provided mechanism well adapted to attain the several ends and objects of my invention in a simple yet efficient manner.

One of the advantages inherent 'in the present construction is that an absolutely rigid backing is afforded for the platen carriage, the construction being such that the position of the platen with respect to the normal printing plane may be conveniently varied. When the paper is inserted through the aperture of the carriage it will be guided and fed over the platen, the table 42 afl ording a convenient support for the paper when it is desired to make erasures. I

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be'made without departing from the the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a typewriting machine, the combination with the carriage, of a -plate located thereon and having its forward portion turned downwardly to form a platen surface, paper feed rolls located beneath said plate and adjacent said downwardly-turned portion, said paper' rolls being adapted to feed the paper forwardly and upwardly over said downwardly. turned portion, and an aperture formed in said platethrough wlhich the paper may be passed to said feed re s. e

2. In a typewriting machine, the combination with the carriage, of a plate fixed thereon, a platen formed by a downwardly turned portion of said plate, a feed roll carried by the platen frame beneath said plate and adjacentsaid platen, an aperture formed in wardly over the platen.

3. In a typewriting machine, incombina-' tion, a platen carriage comprising side pieces, a plate connecting said sidepieces,

a platen formed by a downwardly turned portion of said plate, paper feed rolls supported beneath said plate adjacent said platen, said plate being provided with a paper-receiving aperture behind the platen, a pivotally mounted paper table extending downwardly through said aperture, a feed roll carried by said paper table which cooperate with said first-mentioned feed rolls to feed paper inserted through said aperture which provides a printing platen, a feed roll supported beneath said plate adjacent said platen, said plate having a paper-receiving aperture behind the platen, a paper table I extending downwardly ture, table through said apermeans pivotally supporting said paper upon the platen carriage, feed rolls 7 carried by the paper table which cooperate with said first-mentioned feed roll toffeed paper inserted through said aperture forwardly and then upwardly over the platen,

and spring means engaging said papertable for holding the feed rolls carried thereby in engagement with said first-mentioned feed roll.

5. In a typewriting machine, in combination, a vertically movable platen frame comprising a top plate, the forward portion of said top plate being turned downwardly to provide a platen, a feed roll supported upon the platen frame beneath said plate and adjacent the rear portion of the, platen, said plate being provided with a paper-receiving aperture located behind the platen, a paper Copies of this patent may be obtained for five cents Ieeohy'hy addressing the Commissioner of Patents;

table extending downwardly through said aperture, means for pivotally supporting said paper table, and feed rolls journaled upon the paper table and engaging said firstmentioned feed roll whereby paper inserted through said aperture may be fed forwardly and then upwardly over the platen.

6. In a typewriting machine, in combination, a platen frame comprising a horizontally disposed top plate, a platen formed by a downwardly turned portion of said plate, said plate being provided with a paper-receiving opening, a paper table extending downwardly through said opening, a feed roll carriedby the platen frame beneath said plate and adjacent the platen, feed rolls carried by the paper table, and spring means engaging the paper table adapted to hold the feed rolls in engagement.

7. In a typewriting machine, in combination, a platen frame comprising a plate having a downwardly turned portion which provides a printing platen, and an erasing table located upon said plate adjacent the' platen.

8. In a typewriting machine, in combina+ tion, a platen frame comprislng a pairlof end members, and a plate rigidly connecting said end members, said plate having a down- Wardly turned portion. which provides a printin platen and an angularly disposed couplin portion, and a rigid abutment to which pressure on the platen is transmitted through said coupling.

In testimony whereof I afiix my signature,

in the presence of two witnesses.

. WELLINGTON PARKER, KIDDER. Witn s:

lyvnnn S. BARRoWs, RUTH O. ANDERSON.

Washington, D. 0.

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