US474981A

US474981A - Casper d

Info

Publication number: US474981A
Authority: US
Publication date: 1892-05-17
Anticipated expiration: 1909-05-17

Description

(No Model.)

0. D. WALLACE.

ETYPE WRITING MACHINE. I No. 474,981. Patented May 1?; 1892.

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UNITED STATES PATENT @FFICE.

'YO ST \VRITING MACHINE COMPANY, OF NEW YORK, N. Y.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 474,981, dated May 17, 1892.

Application filed May 15, 1889. erial No, 310,802. (No model.)

To all whom it may concern.-

Be it known that I, CASPER D. WALLACE, a citizen of the United States, and a resident of Bridgeport, in the county of Fairfield and 5 State of Connecticut, have invented certain new and useful Improvements in Type-VVriting Machines, of which the following is a specification. Myimprovements in type-writing machines relate more particularly to the signaling mechanism, and have for their main objects to provide a simple and eflicient 'means for giving an audible signal or alarm when the paper-carriage has arrived at any predeteri mined point in its path of travel; and to this end my invention consists in the combinations of devices hereinafter more fully described, and particularly pointed out in the appended claims, In the accompanying drawings, Figure 1 is a rear elevation of a portion of a type-writing machine embodying myimprovernents. Fig.

2 is a side or face view of the signaling mechanism detached. Fig. 3 is' a vertical section taken at the linear acof Fig. 4. Fig.4 is a vertical section taken at the line y y of Fig. 2.-

Fig. 5 is a face view of the driving-drum.

Fig. 6 is a vertical section taken at the line 2 z of Fig. 5. Fig. 7 is a side detail view of 0 the supporting-bracket, the bell, the hammer,

and the hammer-supporting and actuatingplates. Fig. 8 is a top View of the same.

Fig. 9 is a perspective view of the hammersupporting plate. Fig. 10 is a similar view of 3 5 the arm or lever which actuates the hammersupporting plate or arm. Fig. 11 is a perspective view of the retaining means for the bell-trip adjusting-spindle. Fig. 12 is a similar view of the same with the spindle in po- 0 sition; and Fig. 13 is an enlarged perspective View of the bell-hammer and its supporting and actuating devices, and showing also a portion of the supporting-bracket.

In the several views the same part will be 7 5 found designated by the same numeral of reference.

1 represents the usual type-ring or top plate of a type-writing machine; 2 and 3, the carriage guided-ails; 4, a yoke connecting the carriage with the guide-rails; 5, a feed-rack attached to the yoke, and 6 a cylindrical platen mounted to travel with the carriage, all in about the ordinary manner. Preferably attached to the under side of the top plate is a bracket 7 for supporting the carriage-driving mechanism. 1

8 represents a drum having a groove 9 in its periphery and a central hub 10, which is mounted to turn on a stud or arbor l1, shouldered and threaded at its outer end and niade fast to a toothed wheel 12 by a clamping-nut 13. To the inner end of the stud or arbor 11 is attached one end of a volute or clock-spring 14., whose other end is connected to the drum 8. Engaging with the toothed'wheel 12 is a gear or cog 15, provided with a button or finger-piece 16 for convenience of rotation. The spring may be wound up by turning the gears and the desired tension or power obtained. A spring-pressed pawl or dog 17 may be provided for preventing accidental unwinding of the spring 14. This pawl or dog may be supplied with a finger-piece 18 for enabling the disengagement of the pawl when it is desired to diminish'the power of the spring 14:. A cord, chain, or other flexible connection 19 is attached at one end to the drum 8 and at its other end to the paper-carriage, preferably at about the locality marked 20.

The spring-drum 8 is adapted to propel or pull the carriage to the left of the machine. The usually-employed feed-dogs which co-operate with therack 5 to effect a step-by-step feed of the carriage are not shown. When the spring-drum has drawn the carriage to the left the desired or the entire distance, the carriage is returned to the right by the operator in the usual manner, at which time the spring 14 is automatically rewound by the rotation of its drum under the action of the unwinding cord or flexible connection 19, thus renewing or reproviding the power for again effecting the propulsion ot' the carriage. As the carriage during the writing'travels step by step toward the left of the machine, the 5 flexible connection wraps about the periphery of the drum and the driving-spring 14 therein gradually unwinds. A pulley 21 is provided to change the direction of the flexible connection.

22 is an arm or support screwed at 23 to the bracket 7 and provided with a gong 24:. At

the free end ofthe arm is pivoted a small plate 25, carrying a hammer 26, adapted to strike the gong and provided with a lug 27, which is adapted to vibrate between two

stops

28 and 29, formed or provided in the arm 22. To the inner end of the plate is pivoted at. 30 an arm or lever 31 foractuating the plate 535 and the hammer 26. The lever 31 is formed or provided with a finger 32, overlapping; the edge of the plate 25, and with a projection 33, extending in an opposite direction and adapted to be engaged by a trip-pin 34:, secured to a disk 35, fitted to turn in a bevel or groove 36, formed in the spring-drum 8. The disk 35 is held in position to travel or turn with the drum by spring fingers or clasps 37 and is provided centrally with a square hole to receive the square end 38 of a spindle 39, which passes through the stud or arborll and is provided at its outer end with a head 40 and a groove {11,into which takes a spring 42 on the nut l3 for maintaining the spindle in operative position.

The disk or trip-pin carrier may be turned by the spindle against the friction of the drum and the spring fingers or clasps; but the latter are arranged to press hard enough against the disk to prevent any turning or shifting of the latter accidentally or by reason of the contact of the trip-pin with the projection 33. v

The drum 8 is constructed and arranged to make one revolution while the carriage travels its full distance in either direction, right or left. 'lhetrip-pin traveling with the drum also makes one revolution while the carriage travels from right to left, or vice versa. The trip-pin may be adjusted or shifted to different positions, so that the alarm or signal may be given at any point between the extremes of travel of the carriage.

If it. be desired, for instance, to have the alarm sounded when the carriage has traveled to the left about half its full distance, (or, say, 35 on the usually-employed front scale,) the carriage is moved until about the center of the platen (lengthwise) stands midway of the track of the carriage, (or until the pointer on the carriage stands opposite 35 on the machine-scale.) The trip-pin, by means of the spindle and disk, is then rotated by hand in the direction of the arrow a at Fig. 2 until the bell rings. Thereafter every time the carriage arrives at the middle of its path or stroke in moving to the left (or every time the pointer reaches 35 the alarm will be rung. If the pointer be set at on the scale and the trip-pin be adjusted by hand to actuate the gong mechanism, the alarm will be sounded thereafter whenever the pointer arrives at 65 in the movement of the carriage from right to left. In this manner the trip-pin may'be adjusted to signal the operator at any desired locality.

It will be understood, of course, that the trip-pin is rotated independentlyof the drum in making adjustments, and that it travels with it during the feed of the carriage under the influence of the driving-spring.

When the carriage is pulled to the right, the drum turns in the direction of the arrow b at Fig. 2, the cord is unwound, and the spring is wound. As the drum thus turns, the trip-pin 3i strikes the upper side of the projection 33, vibrates the lever 31, and passes by it, the latter returning to normal position by gravity immediately the pin and the projection part company. At this time the gong is not sounded. When the carriage is being fed to the left, the drum turns in a direction the reverse of that indicated by the arrow 1), and the cord is Wound thereupon. As the drum turns thus, the trip-pin engages with the underside of the projection 33 and vibrates the lever 31 in the direction of the arrow at Fig. 13, the finger 32 at the same time carrying down the arm 25 against the tension of 'a. spring 43 and raising the bell hammer. As soon as the trip-pin passes beyond the projection 33 the spring 43 operates to return the arm 25 and the lever 31 to their initial positions, and in so doing the hammer is caused to strike the gong. Normally the parts stand in the position illus trated at Fig. 13 with the lug 27 in contactv with the stop 28. The stop 29 may be dispensed with, if desired.

Numerous changes in detail construction may be made without departing from the spirit of my improvements, and so far as some of the features are concerned other means than those shown and described may be employed for feeding or driving the carriage.

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

1. The combination,witha rotatorybell-trip, of a bell, a pivoted armcarrying a bell-ham mer, and a lever pivoted to said arm, adapted to be actuated by the bell-trip and in turn to actuate the pivoted bell-hammer arm.

2. The combination,witharotatorybell-trip, of a bell, a pivoted arm carrying a bell-hammer, a lever pivoted to said arm, and a spring for returning the parts to their normal positions.

3. The combination,witharotatorybell-trip, of a bell, a pivoted arm havingabell-hammer and a lug, a stop 28 for said lug, and a returning-spring.

4. The combination,witharotatory bell-trip, of a bell, a pivoted arm, a bell-hammer, and a lever pivoted to and parallel with said arm and provided with a finger for moving said arm, and a projection for engagement with said bell-trip.

5. Thecombinatiomwith arotatorybell-trip, of a bell, an arm pivoted at one end and carrying a bell-hammer, and a lever pivoted at the other free end of said arm and constructed to carry the arm when the bell-trip rotates in one direction and to vibrate independently thereof when the bell-trip rotates in the opposite direction.

6. The eombinatiomwitharotatory bell-trip,

of a bell, a bracket, a bell-hammer arm pivoted to said bracket, a leverpivoted or fulcrnmed 011 said arm, a finger engaging the latter, a projection in the path of the belltrip, a spring, and a stop or abutment 28.

7. The combination of the paper-carriage, a

- spring-drum, a driving-belt connected at one end to the paper-carriage and at the other end to the spring-dru m, a hollow stud or-arbor for said spring-drum to turn upon, a toothed wheel secured to said stud or arbor, a pinion or cog for turning said toothed wheel and the stud or arbor and winding said spring, a disk fitted upon said spring-drum, having a-belltrip adapted to turn with said drum during the movements of the carriage, a spindle having at its outer end a hand-piece passing through said stud or arbor and engaging said disk in a manner such that the bell-trip thereon may be adjusted to different positions independently of the rotation of said spring-drum, and a bell mechanism adapted to be actuated by said bell-trip.

8. The combination of a paper-carriage, a spring-drum, a flexible connection between the two, a circular disk frictionally attached to the side of said drum, a spindle passing axially through said drum and engaging said disk and provided with a knob, a bell-trip on said disk,- and a bell mechanis 9. The combination of a paper-carriage, a spring-drum, a flexible connection between the two, a circular disk frictionally attached to the side of. said drum, a spindle passing axially through said drum and engaging said disk and provided with a knob, a bell-trip on said disk, a bell, a bell-hammer, an arm pivoted at one end and carrying said bell-hammer, a lever pivoted at the opposite free end of said arm and provided with a finger to move the bell-hammer arm, and a projection to be encountered by the bell-trip.

10. The combination of a paper-carriage, a

driving-belt, a spring-drum, a circnlardisk fitted to the side of said drum, a series of fingers for holding said disk frictionally to said drum, a spindle for turning said disk independently of said drum, a bell-trip on said disk, and a bell mechanism.

11. The combination of a paper-carriage, a driving-belt, a pulley, a spring-drumarranged at right angles to the travel of the carriage and at the side of the machine, a depending bracket for supporting said drum, a disk fitted to said drum, a spindle passing through the drum for turning said disk independently of the drum and having a knob at the side of the machine, a bell-trip on said disk, and a bell mechanism.

12. The combination of a paper-carriage, a driving-belt, a pulley, a spring-drum arranged at right angles to the travel of the carriage and at the side of the machine, a depending bracket for supporting said drum, a disk fitted to said drum, a spindle passing through the drum for turning said disk independently of the drum and havinga knob at the side of the machine, agbell-trip on said disk, and a rigid supporting-arm extending from said bracket and having a stop 28, a bell mounted on said supporting-arm, an arm carrying a hammer, pivoted at one end to said supporting-arm and provided with a lug,a lever pivoted to the 0pposite free end of said pivoted arm and havin g 'a finger and a projection, and a returningspring.

13. The combination, with a rotatory belltrip, of a supporting-arm having a stop 28, a bell, a pivoted arm 25, carrying a bell-hammer and having a lug, a lever pivoted to the arm 25 eccentrically of its pivot and having an overlapping finger to move the pivoted arm 25, and a projection to be encountered bytthebell-trip.

Signed at Bridgeport, in the countyof Fairfield and State of Connecticut, this 10th day of May, A. D. 1889 CASPER D. WALLACE.