US471710A

US471710A - Type writing machine

Info

Publication number: US471710A
Authority: US
Publication date: 1892-03-29
Anticipated expiration: 1909-03-29

Description

(No Model.) 3 Sheets-Sheet 1.

G. B. WEBB. v n TYPE WRITING MACHINE. No. 471,710. Patented Mar. 29, 1892.

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(No Model.) 3 SheetsSl1eet 2. G. B." WEBB. TYPE WRITING MAGHINE.

110. 471,710., Patented Mar. 29,1892.

' ATTORNEY.

3 Sheets-Sheet 3.

(No'ModeL) G. B. WEBB. TYPE WRITING MACHINE.

' Nb. 471,710. Patented M31229, 1892.

- INVENTOR ATTORNEY. v

WITNESSES:

UNITED STATES PATENT OFFICE.

GEORGE B. WEBB, OF NEWV YORK, N. Y., ASSIGNOR TO THE REMINGTON STANDARD TYPEWRITER MANUFACTURING COMPANY, OF SAME PLACE.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of .Letters Patent No. 471,710, dated March 29, 1892.

Application filed October 13, 1890.

prove the construction of type-writing machines having shifting platens and built upon the principle set forth in the Letters Patent to W. F. Judy, No. 411,339, dated September '17, 1889, and for a further object to improve other portions of the machine. I

To these ends my invention consists in the features of construction and combinations and arrangements of parts, hereinafter more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a top plan View of a type-writing machine embodying my improvements. Fig. 2 is a side elevation of thesame. Fig. 3 is a central vertical section through the upper part of the machine and showing the platen-carrier raised or thrown back in dotted lines. Fig. 4 is a perspective view to illustrate the mode of mounting the platen carrier or frame. Fig. 5 is a perspective view illustrating the mode of mounting the feed-rack and its release-key, Fig. 6 is a perspective View illustrating the mechanism for turning the platen in linespace direction. V p

In the several views the same part will be found designated by the same numeral of reference.

1 is the body or frame-work of the machine,

which is substantially similar to the framework of the Remington type-writer.

2 are the key-levers, 3 the connecting-rods, and 4 the type-bars, which are provided each with an upper and a lower case letter.

At each side of the top plate 5 of the machine is a standard 6, having a half-round groove 7 on its upper side,into which is fitted one end of the carriage-rod 8. The ends of the carriage-rod are formed each with a conical depression 9 to receive a pin a lug 10, projecting at right angles from the upper end of a plate 11, which is fastened by a screw 12 to Serial No. 367.964. (No model.)

the outer face of the standard 6. By this means the carriage-rod is held firmly in place against endwise movement, and is prevented from being raised or elevated from its bearings in the upper ends of the standards. Furthermore, by this construction the carriagerod may be rotated or turned, so as bring into use from time to time, when required, a new wearing-surface for the grooved rollers 13 of the carriage 14, which is guided at its front side by said carriage-rod 8. In rear of the rod 8 and parallel therewith is arranged a shorter supplementary carriage-rod 15, mounted in brackets 16, rising from the top plate 5.

About centrally of the main portion of the carriage 14 is arranged an arm 17, which extends rearwardly at right angles to the rod 8 over to the rod 15, and is constructed with a groove or fork 18, which partially embraces the said rod 15, so as to be guided thereby and prevent any tilting or rearward motion of the carriage 14. By arranging the arm 17 centrally of the part 14 the rod may be made much less in length than the rod 8.

The carriage at each end is provided with a downwardly and forwardly extending arm 19, in which at 20 are journaled the ends of a rock-shaft 21. At or near each end of said rock-shaft is an upwardly-extending arm 22, preferably formed integral with said rockshaft. To the upper free ends of said arms 22 the rear ends of the side bars 23 of the platen-carrier are hinged or pivoted, as shown at 24. The platen-carrier consists of a threesided frame composed of the side bars 23 and the front bar 24. Between the side bars 23 the paper-platen 25 is journaled to rotate in the usual manner, and the front rod 24 is formed with a forward bracket or extension 26, in which is journaled a grooved anti-friction roller 27, that rides upon a shift-rod 28, mounted upon the upper ends of bell-crank levers 29 and 30, which are oppositely disposed and fulcrumed upon a cross-rod 31, lo-' cated beneath the top plate of the machine in substantially the manner of the present Remington machines. The bell-crank 29 is connected by a rod 32 to a key-lever 33, and the bell-crank is connected by a wire 34 to a key-lever 35 on the opposite side of the machine. A spring 36 'is connected to the bell-crank 29, as usual. The normal position of the platen-carrier is shown in full lines at Figs. 1, 2, 3, and 4. WVhen in this position, the machine is adapted to print the lowercase letters only. When it maybe desired to to use the capital or upper-case letters, the key-lever 33 is depressed, the rock-shaft 31 oscillated, and the upper ends of the

bellcranks

29 and 30 caused to move rearwardly with the cross-rail 28, and thus effect the shifting rearwardlyof the platen-carrier about its rock-shaft 21, as shown by the dotted lines at Fig. 2. As soon as the finger or key lever 33 is released the platen -carrier is moved back to its normal position by means of the spring 36. In the normal position of the platen-carrier the arms 22 incline forward beyond the vertical axis of the rock-shaft 21. When the platen-carrier is shifted rearwardly, these arms are carried backward on the opposite side of said vertical axis and inclined to a similar extent, in order that the lower side of the platen may occupy the same plane or level when the upper-case letters are being used as when the lower-case letters are employed. In shifting from one position to another the platen is carried in a slightly-curved path; but inasmuch as the extremes of its motion terminate in the same horizontal plane the alignment of the writing will be unaffected when the platen is shifted for upper-case work.

On the rock-shaft 21 is an arm 37, which vibrates in a slot 38, formed in a plate 39, screwed to the carriage 14 and provided with an adjustable abutment 40 for the arm 37 to strike against and limit the rearward shifting movement of the platen-carrier.

When it may be desired to inspect the work, the platen-carrier may be turned up about its pivots or hinges 24, as represented by the dotted lines in Fig. 3. In order to prevent the carriage from being thrown too far back when in its upturned position, a stop 41 is attached to the carriage 14 at its upper side and at one end. The platen-carrier may be conveniently turned up and down about its hinges 24 by means of a lifter or fingerpiece 42, made integral with the roller-frame 26 and extending toward the operator.

During-the forward and backward shiftipg of the platen carrier or frame and also when end of a fiat or bar spring 47, that is attached by a screw 48 to the sidebar 23. The springs 47 have a tendency to force the pressure or feed roller 43 against the platen, and the tension or power of the springs may be regulated or adjusted by their attaching-screws 48.

The carriage-scale may be attached to paper-guides on the under side of the platen in the usual way, and the customary machinescale 49 maybe mounted upon the upper ends of the bell-

cranks

29 and 30.

The line-spacing mechanism of the platen consists of a driving-pawl 50, pivoted to the upper end of an arm 51, working from a horizontal axis 52, about which there is a coiled spring 53 for returning the parts to their first position. The pawl 50 engages with a ratchetwheel Men the end of the platen, and the arm 51 is vibrated to move the pawl forward, and thus turn the platen by a lever 55, having a vertical pivot 56 and a short transverse arm or lug 57, which when the lever is; moved toward the right bears against the rear side of the vertical arm 51 and forces it in the proper direction for efiecting a partial rotation of the platen. On the arm 51 is a detent which engages with the ratchet-wheel 54 to prevent any overthrow of the platen by momentum when the driving-pawl is moved suddenly forward to turn the ratchet-wheel.

The lever 55, which may be considered as a horizontally-arranged bell-crank, is provided at the rear side of its fulcrum with a projection 58, which is adapted to engage with a stop or regulator 59, pivoted upon one of the side bars 23 of the platen-carrier and provided with two faces or sides 60 and 61, one nearer the pivot than the other, whereby the throw or movement of the lever 55, arm 51, and pawl 50 may be regulated so that the platen may be turned the distance of either one or two notches of the ratchet-wheel, as may be desired. A platen-check 61 is pro.- vided, as usual, to-prevent any rotation or movement-of the platen while the writing is being done.

As the escapement mechanism or carriagefeeding devices shown herein form no part of the present invention, I shall only briefly describe them in this case.

To the carriage 14 is mounted in depending arms 62 a rock-shaft 63, to which is secured a frame 64, provided with 'a rack 65, which engages with a pinion 66 on the inner end of a shaft 67, that turns in a tubular bearing 68', which is provided at its rear end with a ratchetwheel 69. Engaging with the ratchet-whecl 69 are two dogs or pawls 70 and 71, the former rigid and the latter'yielding. The dogs are connected to a dog-holder, which is mounted upon a rock-shaft or trunnion 72, having a returning-spring 73 and an inwardly-extending arm 74,which by a link 75 is coupled to the universal bar in about theju'sual manner. To an arm 76 of the carriage 14 is connected one end of a belt or cord 77, the other end of which is attached to a spring driving-drum on the frame and having a tension, as usual, to move the carriage toward the left of the operator. When any finger-keyor space-key dog 70 is released and the dog 71 caused tov engage with a tooth of the ratchet-wheel in advance of the one it previously engaged with, thus permitting the driving spring or drum to move the ratchet to the left through the shaft, pinion, and rack the distance of one letter-space or one notch of the ratchet-- wheel. As the carriage is moved thus step by step from one end of the machine to the other, it is guided by the parallel rodsS and 15 and the arm 17 and the platen-carrier is caused to travel therewith. The rack 65 may be released from the pinion 66, and hence from the feeding mechanism, by means of a lever 78, pivoted to an extension of .the carriage and connected to the rack-bar 65, so that it may elevate or tilt the same about the rockshaft 63 as a center and against the tension of its returning-spring 79.

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

1. In a type-writing machine, the combination of a carriage capable of a sliding movement only, two parallel rails for guiding said carriage, a platen-carrier pivotally connected to and arranged in front of said carriage, and means for swinging the platen-carrier about its pivotal connection to shift the platen from its lower-case position to its upper-case position,the construction and arrangement being such that when the platen-carrier is shifted the carriage remains at rest and the platencarrier swings or vibrates about its pivotal connection as an axis of motion.

2. In a type-writing machine, the combination of a paper-carriage, a platen-carrier, and a pair of intermediate arms, one end of each of which is pivoted to the carriage, so that the platen-carrier may be shifted transversely relatively to the carriage and the other end of each of which is pivoted to the platen-carrier, so that the latter may be turned up for inspection of the work, &c.,substantially as set forth.

3. In a type-writing machine, the combination of a carriage capable of a sliding movement only, guide-rails for said carriage, a rockshaft mounted in said carriage, rocker-arms extending upwardly and forwardly from said rock-shaft, and a platen-carrier hinged freely at its rear side to the upper ends of said rockerarms, whereby the platen may be shifted from one printing position to another by the oscillation of said rock-shaft and may be turned up for inspection of the work by reason of the free hinged connection between its carrier and the rocker-arms.

4:. In a type-writing machine, the combination of a carriage capable of a sliding movement only, guide-rails for said carriage, a rockshaft mounted on said carriage and in front of its guide-rails,rocker-arms and a stop-arm extending upwardly and forwardly from said rock-shaft, a platen-carrier hinged freely at its rear side to the upper ends of the rockerarms, and an abutment on the carriage to coact with the stop-arm and limit the oscillationof the rock-shaft.

5. In a type-writing machine, the combination of a carriage capable of a sliding movement only, guide-railsfor said carriage, a rockshaft mounted on said carriage and in front of its guide-rails, rocker-arms extending upwardly and forwardly from said rock-shaft, a platen-carrier hinged freely at its rear side to the upper ends of the rocker-arms, and an abutment on the carriage to co-operate with the platen-carrier to limit its rearward movement when turned up about its hinges for inspection of the work.

6. In a type-writing machine, the combination of a carriage composed of the main portion 14 and rearwardly-extending arm 17, two parallel horizontallyarranged guide rails, upon one of which the main portion of the carriage runs and upon the other of which the rearwardly-extending arm runs, a rockshaft mounted on said carriage and in front of its guide-rails, rocker-arms extending upwardly and forwardly from said rock-shaft, and a platen-carrier hinged to said rockerarms.

7. In a type-writing machine, the combination,with a carriage having rollers or wheels and with standards having notched ends, of a guide-rail having depressions in its ends and plates secured to said standards and pro vided with lugs or pins which enter the depressions in said guide-rail, whereby the latter is prevented from moving up or down or longitudinally, while, when desired, it may be turned by hand to bring into use a fresh wearing-surface for the wheels of the carriage.

8. In a type-writing machine, the combination, with a platen having a ratchet-wheel, of an upright arm 51, having a horizontal pivot 52, a driving-pawl 50, mounted at the free upper end of saidarm, and a lever 55, having a vertical pivot 56 and a short transverse arm or lug 57, which when thelever is moved is adapted to bear against the vertical arm 51 and move it and the driving-pawl in the proper direction to partially rotate the platen.-

9. In a type-writing machine, the combina tion, with the platen, of a pair of depending links pivoted at 45 to the platen-carrier and provided each with a forward nose or projection, a flat or bar spring for each link connected to theplaten-carrier and resting at its free end under said nose or projection, and a pressure or feed roller mounted in the lower ends of said links.

Signed at New York city, in the county of New'York and State of New York, this 8th day of October, A. D. 1890.

GEORGE B. WEBB.