US451629A

US451629A - Type-writing machine

Info

Publication number: US451629A
Authority: US
Publication date: 1891-05-05
Anticipated expiration: 1908-05-05

Description

(No Model.) 3 SheetsSheet 1. O. W. WALKER.

TYPE WRITING MACHINE.

No. 451,629. Patented May 5,1891.

(No Model.) 3 Sheets-Sheet 2.

O. W. WALKER.

TYPE WRITING MACHINE.

No. 451,629. Patented May 5,1891;

log 1/ r v 24 a ll i 15 I I I. a 7 4-4, a

lulu" M Will (No Model.) 3 SheetsSheet 3.

C. W. WALKER.

TYPE WRITING MACHINE.

No. 451,629. Patented May 5,1891.

um I UNITED STATES PATENT OEEIcE.

CHARLES- lV. \VALKER, OF STRANG, NEBRASKA.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 451,629, dated May 5, 1891.

Application filed March 24, 1890.

T0 at whom it may concern.-

Be it known that 1, CHARLES W. WALKER, of Strang, in the county of Fillmore and State of Nebraska, have invented certain new and useful Improvements in Type-WVriting Machines, of which the following is a specification.

The object of this invention is to so construct a type-writing machine composed of type-carrying bars so arranged that the impression upon the paper willbe on the upper side of the paper-carrying roller in plain sight of the operator; and it consists in the combination of various elements hereinafter set forth.

Figure 1 is a plan view of a type-writing machine embodying the features of my invention. Fig. 2 is a vertical transverse section on dotted line X, Fig. 1. Fig. 3 is a vertical section on dotted line Y, Fig. 1, showing the construction of the paper-carrying roller and its connection with an escapement device. Figs. 4, 5, 6, and 7 are detail representations of the escapement device shown in the various positions which it occupies during the operation of the type-writing machine of which it is a part. Fig. 8 is avertical section of the type-writing machine shown at Fig. 1 on dotted line Z, in which the type-carrying bar therein shown is in its normal position or a position which it occupies when the machine is not in use. Fig. 9 is a section on the same dotted line, but in which the type-carrying bar is shown in a more elevated position when in its line of travel. Fig. 10 is also a section on dotted line Z, Fig. 1, in which the type-carrying bar is shown in a position which it occupies when in the act of forming an impression upon the paper. v

The type-writer represented in the accompanying drawings in this instance cons sts of abase or supporting frame 1, which 1s suitably elevated to receive the operative parts which control the movements of the type-carrying bars. Upon the upper surface of the supporting-frame is secured two brackets 2, suitably separated and supporting a roller 3, wh1ch is provided with a series of teeth or pins 4 on its upper surface. These brackets also support a rod 5, which passes through the depending portion 7 of a bent frame, upon which serial No. 345,138. (No model.)

is supported the paper-carrying roller 6. This frame is provided with two horizontal portions 8, having their ends upturned and perforated, as shown at Fig. 3. These upturned ends support the paper-carrying roller 6 by a rod 10, passing lengthwise through it and projecting beyond its ends sufficiently to enter the perforations in the upturned ends 9 of the bent frame. One end of this rod is provided with a knob 11, by means of which the operator can turn the roller to advance the paper. One end of the paper-carrying roller 6 has it surface formed with dents or depressions 12 at suitable intervals, and a spring 13 is secured to the bent frame and has its free end formed with a projection, which will enter the depressions to hold the paper-carrying roller when adjusted. By means of this arrangement the paper-carrying rolleris free to rotate in either direction by turning the rod 11 in the desired direction. The portion 14c of the bent frame extends horizontally beneath the rod 5 and in close proximity to the pins or teeth 4. From this horizontal portion 14c extends horizontally an arm 15, which has a sliding connection with a rod 16, located some distance in rear of the paper-carrying roller.

This arm 15, through its connection with the paper-carrying roller, serves to hold the papercarrying roller in a vertical position, and by its sliding connection with the rod 16 the papercarrying roller is free to slide horizontally in its connection with the rod 5, as will be more fully set forth hereinafter.

For a description of the escapement device employed by me in the construction of my type-writing machine, reference is had to the drawings shown at Figs. 4:, 5, and 6. To the under side of the portion 14 of the bent frame is permanently secured a stationary dog 17, having its end 18 at right angles to the bent frame. A slot 19 is formed in the lengthwise direction of the portion 14 on its edge opposite to that occupied by the stationary dog 17. A removable dog 20 has a connection with the bent frame by a stud 21, passing through it and the slot 20. The free end 22 of thismovable dog is bent at right angles to its lengthwise direction. A detached isometrical view of this movable dog is shown at Fig. 7, in which will be seen that its ends are slotted so as to embrace both surfaces of the bent frame 14, which serves to hold it against vertical displacement. A spring 23 has a connection with the movable dog and also with the arm 15. This spring is so arranged as to exert a downward force on the movable dog and at the same time to hold it in the forward end of the slot 19.

In the views l, 5, and (3 I have shown the pins or teeth st in section and in the different positions which they occupy during the manipulation of the type-writing machine. At Fig. 4 the teeth are shown as they appear when the type-writing machine is at rest or in their normal position. The paper-roller, by mechanism hereinafter to be described, is caused to move from the right-haud side of the machine toward the left-hand side with sufficient force to hold the movable dog in the position shown at Fig. 4 against the action of the spring 23 when the movable dog comes in contact with one of the teeth l. The tooth which lies in contact with the movable dog is caused to move from the movable dog to the stationary dog, when the parts will occupy the position shown at Fig. 5, and at which time the movable dog by the action of its spring will be forced to the other end of the slot, as shown in said Fig. 5. Upon releasing the roller 3 the tooth which was in contact with the stationary dog will slip therefrom and the movable dog will enter between said tooth and the next preceding tooth, and by reason of the paper-carrying roller advancing, the movable dog will again be pressed to the rear end of the slot, when the parts will again occupy the position shown at Fig. 4., excepting that the paper-carriage is advanced one tooth. This step-by-step movement of the paper-carrying roller will continue to the end of the teeth by oscillating the roller carrying the teeth. The paper-roller carriage can be drawn to its starting-point by a pull on the knob 11, and as the parts occupy their position shown in Fig. 4 the movable dog will yield at right angles to the lengthwise direction of the paper-carrying roller, as shown at Fig. 6, and when released will be forced between two of the teeth, as shown at Fig. l, when the machine is in position to be advanced by oscillating the roller 3. The means for oscillating this roller 3 in both directions will be described in connection with the movement controlling the operation of the typecarrying bar. To the left-hand end of the bent frame is connected a coiled wire spring 24, which passes over a pulley 25, held elevated by a bracket 26. This spring also passes under a pulley 27, held in position in the main supporting-frame and extends horizontally to the opposite side of the main frame, where it is secured. This is the means above referred to for causing the paper-carrying roller to advance as it is released by the escapement device above described. By reason of the length of the spring and its roller-support a substantially uniform tension or force is applied to the paper-carrying roller throughout its movement.

In the drawings I have shown but a single type-carrying bar; but it will be readily n11- derstood how a series of these bars will be located and their connection with the escapement device by the explanation of the single type-bar and its conneetiomwhich I will now proceed to describe, reference being had to Figs. 8, 9, and 10 of the drawings. Under the top plate of the supporting-frame and near to one end are pivoted the key-levers 28 at a point 29, only one being shown. To this lever is pivoted a link 30, having its upper end in hook form. This upper hook portion passes over a horizontal rod 31, which extends some distance from the roller, and which has its ends bent and passed through said roller. The bent portions of this rod are screwthreaded, and screw-nuts 32 are placed on each side of the roller for the purpose of adjusting the rod to bring it closer or farther from the roller. \Vhen a downward pressure is applied to the lever 28 by the operator prcssin g on a key 33, which extends through an opening in the top plate in the main frame and comes in contact with the free end of the lever, the link-connection between the lever 28 and the roller 3 will cause the roller 3 to oscillate and transfer the tooth in contact with the movable dog to the stationary dog of the escapement device before set forth, when the parts will assume the position shown at Fig. 10, and upon releasing the pressure applied to the lever 28 weight 34, which has a connection with the roller 3 by a screwthreaded rod 35, will cause the parts to assume the position shown at Fig. 8. This weight 34 is made adjustable, so as to return the parts which it influences to their normal position with greater certainty. The object of making the rod 31 adjustable is to proportion the movement of the lever 28 to the oscillatory movement of the roller 3 required to effect the proper working of the escapement device.

A type-carrying bar 36 has a connection with a suitable support 37 through the medium of two links 38 and 39. The link 38 has a pivotal connection at one end to the support 37 and at its other end to the typecarrying bar near the rear end of the bar. The link 39 has a pivotal connection with the type-carrying bar between its forward end or the end carrying the type and its pivotal connection with the bar 38. This link also has a pivotal connection with the support 37 at 4:0, and has an extension ll beyond its pivotal connection with the support 37, to which is pivoted a link 42, which has a pivotal con n ection with the bar 28. \Vhen the parts are in the position shown at Fig. 8, they are in their normal position and the type on the end of the type-carrying bar lies in contaetwith a stationary ink-pad 4-3. hen a lever 28 is depressed, its connection with the link 39 will cause the type-carrying bar to leave the ink-pad and follow a path outlined by dotted lines in Figs. 8, 9, and 10, and when the lever is depressed to its lowest point the type-carrying bar will assume a substantially horizontal position shown at Fig. 10, which will bring the type directly over the paper-roller and will cause an impression to be left on the paper. This movement will also operate the escapement device, and when the parts are released they will be returned to normal position by the weight 34 acting upon the lever 28.

At Fig. 9 I have shown the type-carrying bar and its link-connections when the typecarrying bar is in its most elevated position, and it will be seen that the movement of the type-carrying bar as it approaches the paper will be nearly vertical, which will leave the best impression on the paper.

Under each lever 28, near the point where the key 33 presses thereon, I have placed a spring 44, which will hold the lever in its elevated position When a different key is struck, and will assist to return the type-carrying bar to its normal position.

I claim as my invention-- 1. In a type-writing machine, the combination of the paper-carrying roller, a pivoted key-lever, a type-bar, a lever pivoted to a support and to the type-bar intermediate its ends, a link pivoted to the upper end of said typebar, and a link connected to the key-lever and the aforesaid lever, substantially as set forth.

2. In a type-writing machine, the combination of the paper-carrying roller, a frame suspended from and moving longitudinally with said roller, dogs secured to said frame, a keylever, a type-bar connected with and actuated by said lever, a rocking bar having teeth or pins to engage said dogs, an adjustable arm projecting from said rocking bar, and a link connected to said type-lever and hooked to the said arm, substantially as set forth.

3. In a type-writing machine, a paper-carrying roller, means for advancing the roller, an oscillating bar, and an escapement to the roller secured to the oscillating bar, said escapement consisting of a stationary dog and a movable dog, said movable dog being pivoted in a slot in said bar, whereby it has a movement in the lengthwise direction of the paper-carrying roller and a swinging move ment, and a spring having a connection with the stationary support and with the movable dog, substantially as set forth.

4. In a type-writing machine, the combination of a papencarrying roller, an escapement to the roller, consisting of an oscillating bar carrying teeth, a stationary dog and a movable dog, a rod running parallel to the oscillating bar, having its ends passed transversely through the bar, which are screw-threaded, and screw-threaded nuts for adjusting the rod to and from the bar, and a link connection between the rod and a key-operated lever, substantially as set forth.

CHARLES W. WALKER.

Witnesses:

D. E. WALKER, E. J. WALKER.