US576287A - Type-writing machine - Google Patents

Description

(No Model.) 2 sheetssheet 1.

B. C. STGKNEY.' TYPE WRITING MACHINE.

Patented Feb. 2, v18.97.-

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(No Model.) 2 sheets-'sheet 2. B. C. STICKNEY. TYPE WRITING MAGHINE.

No. 576,28'7. Patented Feb. 2, 1897.

NTTED STATES PATENT OFFICE..

BURNIIAM C. STICKNEY, OF ELIZABETH, NEIV JERSEY.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 576,287, dated February 2, 189'?.

Application filed .Tune 25,1895. Serial Nd 553,944. (No model.)

T0 all whom, t may concern:

Be it known that I, BURNHAM C. STICKNEY, a citizen of the United States, and a resident of Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Type -IVriting Machines, of which the following is a speciication.

My invention relates to that class of typewriting machines made the subject of an application filed by me February 17, 1893, Serial No. 462,689; and it consists in the features of construction and combinations of devices hereinafter more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a vertical longitudinal section of a type-writing machine embodying my present improvements; and Fig. 2 is a horizontal section taken at the line Z Z of Fig. 1 and looking in the direction of the arrow, but omitting the several springs shown at Fig. 1.

In both views the same parts will be found design ated by the same numerals of reference.

1 designates the framework of the machine; 2, the top plate or type-ring 3, the type-bars; 4, the connecting-rods, and 5 the usual powerdriven paper-carriage. The paper-carriage is provided with a feed-rack 6, with which cooperates a spacing-dog 7 and a detaining-dog 8, mounted upon a trunnion or rocker 9, held by a bracket 10 and actuated by a link 11, connected at its lower end to an arm 12, secured to a transverse rock-shaft 13, pivoted at 14 to the framework of the machine. The rook-shaft 18 is provided on each side with forwardly-extending arms 15, the front ends of which are united by a universal bar 16, extending transversely of the machine parallel with said rock-shaft 13.

The escapement or spacing mechanism may be of any usual or suitable construction. A spring 17 is provided to return the universal bar of the spacing mechanism to normal position after releasement, as will presently appear.

Key-levers 18, extending lengthwise of the machine, are pivoted at their rear ends to a transverse fulcrum-rod 19 and provided at their front ends with heads or keys 20. To each key-lever, and near the rear end thereof,

is pivoted at 21 an upwardly and forwardly extending lever or arm These arms are indicated at Fig.. 2 by heavy lines. Each of the connecting-rods 4 is pivoted at its lower end to one of the arms 22. The type-bar 3, the connecting-rod 4, and arm 22 are preferably held in their normal positions by gravity, the weight of the type-bar being superior to that of the connecting-rod and arm 22; but of course a spring 22a may be employed for returning these parts and holding them in their normal positions. Where a spring is employed for returning these parts, one end of the spring may be connected to the .arm 22 and the other end t0 a bar 22h, which may eX- tend across the machine above the series of arms 22 and may have its ends supported on or in the side frames of the machine. The arms 22 are extended forwardly of or beyond their' points of pivotal connection 4 to the rods 4, and their forward endsv all terminate in a right line transversely of the machine.

To the side of each key-lever 18, just below the forward end of the arm 22, is pivoted at 23 a perpendicular trip 24, the upper end of which is provided with a projection or hook 24a, which catches over the forward end of arm 22. Each trip 24 is provided at its lower end with a projection 25, against which bears a spring 2G, arranged upon the key-lever, which serves to hold the trip innormal position and pressing against a pin or stop 27 on the key-lever.

In operation, when a key-lever 18 is depressed the trip 24 is carried down and the arm 22, being engaged at its forward end by the hook 24"L of the trip 24 and being pivoted at its rear end to the key-lever 18, moves `simultaneously with the lever 18, the lever 18, the trip 24, and the arm 22 all moving bodily together about the key-lever fulcrum-rod 19 as a center of motion. During this depression of the key-lever the type-bar, through the connecting-rod 4, is swung upwardly from its position of rest toward the platen. At the same time the universal bar 16 is depressed, being arranged above the levers 18 and just beneath the arms 22. Vhen the universal bar is depressed, the arms 15 are vibrated, the rocking shaft 13 oscillated, the arm 12 elevated, and, through the link 11, the feed-dogs actuated. Through the feed mechanism described or any other suitable feed mechanism IOO the carriage is fed the necessary letter-space distances as the impressions are made. At a predetermined time. (j ust before the type strikes the paper) the arm 22 and its associated type-bar, together with the universal bar 16 and the feed mechanism, are released from the control of the key-lever 1S and returned to their normal positions independently and in advance of said key lever, the release being accomplished in the following manner: A horizontal bar 2S extends beneath the keylevers transversely of the machine and is provided with a series of threaded perforations, into each of which is inserted from beneath a screw 29, provided with a clamping-nut 30. Each screw 29 is arranged normallyT in the path of the horizontal projection 25 of its associated trip 24, and during the depression of the key-lever the screw intercepts or stops the projection 25 and causes the trip 24 to vibrate independently forward about its pivot 23 and the hooked portion 24 of the trip to withdraw from the forward end of the arm 22, thereby releasing said arm from the control of the lever 18. This releasing action is timed to occur when the type is in proximity to the platen, but before the imprint is made, the type-bar proceeding by inertia to make the impression and then falling by gravity or under the influence of the spring 22 to its normal position, raising the connecting-rod 4 and its connected arm 22, these parts being thus returned to normal position independently of the keylever 1S, which is stilly held depressed, permitting the manipulation of another key lever or levers without relieving the first one from finger-pressure. During this return movement the universal bar follows the arm 22 under the action of its returning-spring 17, and in consequence the spacing mechanism is simultaneously returned to its normal position.

A pad 31 extends across the machine beneath the key-levers to receive the blow of the iingers when the type-bars are released from the key-levers.

The positions assumed by the parts just after the release has taken place and while the impression is being made are indicated by dotted lines at Fig. 1, which figure also shows by full lines the positions of the type-bar, connecting-rod, and arm after they have returned to normal position and while the keylever is still held in the dotted-line position, the rear pivoted end of the arm 22 remaining, however, in the dotted-line position. During this return movement the arm 22 is vibrated upwardly independently about the pivot 2l, which permits the forward operative end of the arm to rise.

Upon relieving the key-lever 18 from iinger-pressure it resumes its initial position, as shown in full lines, under the return pressure of spring 32, during which motion the beveled face of the hook 24:a rides along the beveled end of the arm 22, and when the hooked portion of the trip rises above the arm 22 the trip vibrates rearwardly under pressure of spring 2G and resumes its normal position in engagement with said arm, as shown in full lines at Fig. 1.

The screw 29, passing through the bar 2S, constitutes an adjustable abutment for contactin g with the projection 25 and vibrating the trip, and affords a means for readily adjusting the action of the trip to occur at the desired moment and for readily readjusting such action when, by constant use or Wear, any of the key-levers or otherparts stand a trifle out of their true positions. The trip normally locks the arm 22 to the key-lever, so that on the downstroke all three parts move bodily together about the fulcrum-rod 19, but the contact of the trip with the screw 29 unlocks or releases the arm 22, permitting it to rise in advance of the key-lever. All of the key-levers have a uniform motion, so that the connecting-rods i that stand farther away from the key-lever fulcrum-rod 19 have a greater motion than those rods that stand nearer to it; butthis variation in the motion of the connecting-rods is compensated for by making the short arms of the type-bars of varying lengths, so that the motion of all the type-bars is uniform.

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

1. In a type-writin g machine, the combination with a type-bar of a lever carrying an arm, said arm being connected to the typebar, the arm and the lever moving together during the printing stroke of the type-bar, and means for releasing the arm and permitting it and the type-bar to return to normal position in advance of the return of the lever to normal position, substantially as set forth.

2. In a type-writing machine, the combination with a type-bar of a lever t-o which is pivoted a type-bar-actuating arm and to which is also pivoted a trip, the trip normally locking the arm to the lever, and means for vibrating the trip about its pivot to release the arm, substantially as set forth.

In a type-writing machine, the combination with a type-bar of a lever to which is pivoted a type-bar-actuating arm and to which is also pivoted a trip, the trip normally locking the arm to the lever and having a projection, and an abutment arranged in the path of the projection to vibrate said trip on the downstroke of the lever, substantially as set forth.

4. In a type-writing machine, the combination with a type-bar of a lever carrying an arm, said arm being connected to the typebar and also engaging the universal bar of the spacing mechanism, the arm, the lever and the universal bar moving together during the printing stroke of the type-bar, and means for releasing the arm and permitting it and the type-bar and universal bar to return to normal position in advance of the return of the lever to normal position, substantially as set forth.

5. In a type-writing machine, the combination with a series of type-bars of a series of IOO IIO

key-levers bearing a series of arms, said arms being arranged above the key-levers and connected by rods to the type-bars, a universal bar arranged beneath said arms and above the key-levers, and a series of trips arranged to releasably connect the arms to the keylevers, substantially as set forth.

G. In a type-writing machine, the combination of a series of key-levers, a series of arms pivoted thereto and projecting forwardly, a series of type-bars connected to said pivoted and forwardly-projecting arms, a series of trips connecting said arms and said key-levers, and nieansfor actuating said tripsv on the downward stroke of the key-levers and effecting a separation between the key-levers and the pivoted arms carried thereby, substantially as set forth.

7. In a type-writing machine, the combination of a series of key-levers, aseries of arms pivoted thereto and projecting forwardly above the levers, a series of type-bars connected to said pivoted and forwardly-projecting arms, a universal bar of the spacing mechanism arranged above the levers and in the path of said pivoted and forwardly-projecting arms, a series of trips connectingsaid arms and said key-levers, and means for actuating the said trips on the downward stroke of the key-levers and effecting a separation between the key-levers and the pivoted arms carried thereby, substantially as set forth.

S. In a type-writing machine, the combination with a series of type-bars, a letter-spacing mechanism including a universal bar, and a series of operating-keys connected to the type-bars and the universal bar, of a series of pivoted trips and adjustable means for arresting and vibrating said trips and thereby regulating the time at which the tripping action shall take place, substantially as set forth.

9. In a type-writing machine, the combination with a series of type-bars and a series of operating-keys connected thereto of a series of pivoted trips and a bar, as 2S, carrying a series of independently movable stops arranged in the path of said trips for arresting and vibrating said trips and thereby adjusting or regulating the action of the trips, substantially as set forth.

10. In a type-bar tripping action, the combination of the pivoted trip 24, having the projection 25, and the adj ustingscrew 29, substantially as set forth. j

1l. In a type-writing machine,the combination with a type-bar of a key-lever, the arm 22 pivoted thereto and connected to the typebar, the trip 24, the spring 26, the stop 27, the projection 25 and the abutment 29, substantially as set forth.

Signed at Elizabeth, in the county of Union and State of New Jersey, this 21st day of June, A. D. 1895.

BURNHAM C. STICKNEY. Witnesses:

JOSEPH F. JAQUITT, EDWARD BRYCE.

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