US471785A

US471785A - Type-writing machine

Info

Publication number: US471785A
Authority: US
Publication date: 1892-03-29
Anticipated expiration: 1909-03-29

Description

(Na Model.) .l

L. F. CLARK. TYPE 'WRITING MAGHINE.

Patented Mar..29, 1892.

me norms PETERS co., P a., wAsmNem v UNITED STATES` PATENT OFFICE.

LEONIDAS F. CLARK, OF ILION, NEV YORK.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 471,785, dated March 29, 1892.

Application tiled October S, 1890- Scrial No. 367.150. (No model.)

To a/ZZ whom it may concern:

Beit known that I, LEONIDAS F. CLARK, of

Ilion, in the county of Herkimer and State of of reference marked thereon, which form part of this specification.

My invention relates to an improvement in type-writers, and more particularly to the type-bar and hangings of the bar.

In the drawings which accompany and form a part of this specification, and in which similar letters and gures of reference refer to corresponding parts in the several views, Figure 1 shows a top view of a section of the circle in a type-writing machine in which the type-bars arehung and a top view of four of the hangers. Fig. 2 shows a side view of a portion of .the type-arm and a hanger. Fig. 2 shows a front view of the same part shown in Fig. 2. Fig. 3 shows the part shown in Fig. 2 with the washer applied above the hanger. Fig. 4 shows a side and bottom view of my improved type-arm removed and freed of 'all other parts and showing only the one.

piece. Fig. 5 shows the top and edge view of my hanger and a washer used in connection therewith in arranging the hangers in two planes, one above the other, as hereinafter pointed out. Fig. 6 shows a piece of the arm which carries the short arm or bell-crank. Fig. 7 shows the part shown in Figs. 4 and 6 combined, and is intended to show the operation of the parts,las hereinafter described. Fig. 8 shows a modified form of construction, being one of the simplest forms of the device. Fig. 9 shows a number of the washers and hangers as they are arranged in the circle of the machine, the hangers being shown in section.

Heretofore difculty has been found -in the way oi' pivoting the type-bar in the class of machines to which my invention is adapted, so that the type will strike truly in the same place and continue to do so after the machine has been used and the parts become somewhat' worn, and it is particularly to this purpose that this invention relates.

Referring more specically to the reference numerals and letters marked on the drawings, 1 indicates the type-hanger, which is provided with a fork on each end, one fork carrying the pivotpin on which the arm is mounted, and the other fork spanning the screw by which the hanger is secured to the machine in the circle thereof. In connection with my hanger 1, I provide washers 2, which are placed alternately above and below the hanger as they are located vin the circle of the machine, (see Fig. 1,) and thuslocating the hangers alternately in a higher and lower plane, whereby a wider hanger with a longer pivot than could otherwise be used is permitted. It will be understood from Fig. 1 how the'inner ends of the hangers will overlap each other somewhat when a wide fork with a long pivotal pin is used.

The' fork spanning the screw 3, by which the hanger is secured to the machine, permits of the ready removal of the hanger and typebars from the machine without entirely removing the screw, and this is made possible without so weakening the hanger as to make it useless by reason of the pivotal pin of the hanger being secured in the hanger instead of in the type-bar, as is now common.

4 indicates the type bar or arm on the lower end of which the type is mounted in the ordinary manner. The type-arm is mounted upon pivot 5 and has a bearing near each end of the pivot. The type-arm engages the pivot at two bearing-points having a space between them, as will be understood from Figs. 3 'and 4. The pivot 5, as shown in Fig. 5, is provided with three bearing-points, as 5, 5b, and 5, which may be separated by projecting rings or lugs 5d. Thebearings 5a and 5c are conical and the portions of the typearm adapted to engage thereon are made corresponding in form.

6 indicates theV bell-crank piece, which is pivoted at 7 in the' end of the type-arm, and is provided with a bearing 8, adapted to engage on the bearing 5 of the pivotal pin.

9 isthe opening or point to which the connecting-rod extending to the key for operat, ing the type is connected.

10 indicates an arm forming a part of piece IOO vzo

6, which is adapted to engage on the front face of the type-arm and limit the movement of the piece 6 with reference to the type-arm, and prevent the piece 6 from bearing on pivot 5 from the front side of the type-bar, and also causes it to retain the type-arm upon its pivot.

-Referring to Fig. 4, 4a indicates the U- shaped bearings having beveled walls adapted to engage on the conical bearings 5a or 5b. The purpose of the bearing at each end of the pivotal pin is to get a wider range of base to the type-arm and the bearing being at two points only the wear, if any, is such that the type-arm will always swing in the same place and is not so liable to vary as where a pivot extends through a continuous hole or bearing in the type-arm.

The operation of the device is substantially as follows: When the power is applied to the bell-crank at 9 of the type-arm to effect its movement, the tendency is to move piece 6 from the position shown in full lines to the position shown in dotted lines in Fig. 7. At this movement the pivotal pin (not shown in Fig. 7) is grasped as in a pair of ton-gsthat is, the two bearings 4a 4f* on the arm engage on vparts 5a and 5b of the pivotal pin on one side and the opposing bearing at 8 on the movable piece 'engages the pivotal pin at part 5C on the opposite side-andthus While the type-arm is being swung up by the bell-crank `6, connected to it at '7, to strike the blow, the bearings are held very accurately to the pivot, no matter if they are somewhat worn, and the type is sure to deliver its blo'w in exactly the same and correct position .every time it is' operated. When the blow has been delivered, the pressure being relieved from the operating-key, the bearing is free-that is, the pivotal pin is not grasped from both sid-es, as heretofore described-and there is no danger of the typearm vbinding on the pivot and failing to return to its normal or lower position. The arm 10 of the bell-crank piece of the type-arm is adapted to engage on the front of the 'typearm and prevent the piece 6 from swinging with reference to the type-arm 4c, so as to allow the type-arm to become disengaged from its pivotal pin, and also prevents undue amount of movement in the bell-crank piece and makes the -arm as near like a one-piece rigid armas may be and still accomplish the purpose of this construction.

In Fig. 8 is shown one of the simplest forms in which my construction can be embodied,

tions in and from the construction described may be made without departing from the spirit or features of this invention or the equivalents of the construction.

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

1. The combination of a forked type-arm and hanger, the pivotal pin spanning the fork and secured therein and having a conical bearing at each end, and the type-arm mounted on the pin, having two bearing-points on the pin and the space between, substantially as set forth.

2. `The combination of a typearm and hanger, the pivotal pin, and a movable bellcrank connected with the type-arm and adapted to grasp the pivotal pin between the bearings of the type-arm, substantially as set forth.

3. A type-arm hanger having a pivotal Spin mounted therein, a type-arm having two bearing-points adapted to engage `on the pivotal pin, with a space between them, and a movable bell-crank connected to the type-arm, adapted to engage vthe pivotal pin between the bearings of the arm, substantially as set forth.

Ll. The combination, with atype-arm carrier and pivot, of a type-arm and a movable bellcrankconnected to the type-arm, adapted 'tov grasp or bind thearm onto the pivot'on which it is mounted,'substantially as set forth.

5. The combination of lthe type-arm having a 'bearing to en-gage the pivotal pin, the pivotal pin having a plurality of bearing-points, a movable binder or clamp piece to engage the pivotal pin on the opposite side from the type -arm, and the connection between the type-arm and the clamp or binder, substantially as set forth.

6. The combination of a type-arm hanger,

a pivotal pin mounted thereon, a type-armv having U-shaped bearings adapted to engage on the pivotal pin, and a movable bell-crank piece pivoted to the type-arm and adapted to engage the pivotal pin and bind the larm onto the pivot-al pin, substantially as set forth.

7. The combination of a type-arm hanger, a pivotal pin, a type-arm having a bearing on the pivotal pin, and a movable bell-crank piece having a bearing on the pivotal pin and pivoted to the type-arm, substantially as set forth. l

S. The combination of a type-arm hanger having a pivotal pin, a type-arm having two bearings on the pivotal pin with a space between them, and a movable bell-crank piece pivoted in the type-arm and having a U- shaped bearing adapted to engage the pivotal pin, substantially as set forth.

9. The combination of a type-arm hanger, a pivotal pin, a type-arm having two bearings on the pin, a movable bell-crank piece pivoted in the type-arm and having a U- shaped bearing on the pivotal pin, and aprojecting arm engaging on the frontof the typearm to prevent displacement, substantially as set forth.

IOO

IIO

IZO

lO. The Combination, with two or more typearm hangers, of two or more duplicate washers engaging alternately on the top and bottom of the hangers, and the screw for securing the hanger to the machine, substantially as set forth.

l1. The combination of the type-arm having bearings adapted to engage the pivotal pin, the pivotal pin having a pluralityl of bearings, a clamp for binding the bearings of the type-arm to the pivotal pin, and the connection between the clamp and type-arm, substantially as set forth.

12. The combination of the type-arm hav: