US860296A - Type-writing machine. - Google Patents

Description

No. 860,296. a PATENTED JULY 16, 1907.

w. w. HOPKINS. TYPE WRITING MACHINE.-

APPLIOATION FILED D30. 4, 1906- 6 SHEETS-SHEET 1.

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TYPE WRITING MACHINE,

APPLICATION FILED 13110.4. 1906.

fi SHEETS-SHEET 2.

| n I l v PAT ENf l'ED JULY 16, 1967.

w. w. HOPKINS. TYPE WRITING MACHINE.

APPLIOATIOI FILED D30. 4, 1906.

- Jar/m 2V .jkffapizz'iz-i a i l gi PATENTED JULY 16, 1907,.

W. W. HOPKINS. TYPE WRITING MACHINE.

APPLICATION FILED D110. 4. 190B.

5 SHEETS-SHEET 4.

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No. 860,296. PATBNTED JULY 16, 1907.

W. W. HOPKINS.

TYPE WRITING MACHINE.

APPLIOATION FILED 1320.4. 1906.

6 SHEETS-SHEET 5.

ing lug 21 that cooperates with the forwardly extend- Another advantage of a construction of this .charae' ing end of one of the arms 8 of the type plate carrier. -ter is that the type plate is moved both transversely When the bar 19 is in its normal position its lug 21 will lie in a lower horizontal plane than the arms 8 of the type plate carrier but as said bar is moved transversely, the inclined surfaces 22 thereon cause said bar-to raise high enough to bring its lug 21 into engagement with the arm 8 and thus move the type plate arrier to the left, looking at Fig. 5, so as to bring the second, third, fourth, fifth and sixth vertical rows of small letters inter alinement with the hammer, said carrier being returned to normal position by means of a spring 23 surrounding the shaft 5 between an abutment and one of the arms 8.

The means for actuating the bar 19-consists of a bell crank lever of which the arm 24 is provided with a bifurcated end that receives a pin 25 on bar 19, the other arm 26 of said lever being fastened to a link 27 secured at its lower end to a transversely extending the links 13 and 27 are connected. The lugs or extensions on the key levers vary in length some of them, for example, the lugs 32 on the key levers which correspond to the characters in the lower horizontal row of the type plate, being of the same length because the type plate must move vertically the same distance every time one of the characters in the lower row is printed, Said plate, however, must be moved transversely a different distance to bring each character in said lower row into'alinement with the printing ham- 'mer and accordingly the lugs 31 on said lower row key levers must be of different lengths, thereby causing the link 13 to bemoveda different distance each time one of said key levers is operated while the link 27 is moved the same distance each time one of the key levers for the lower row'is operated. A stop 16 is provided for each key lever to control its downward movement, said stops being pivotally mounted on the shaft 18 and arranged intermediate the key levers. At the forward end of eachstep are two lugs or extensions 3l and 32' wliich correspond in length to the lugs or extensions on the key-lever with which said stop cooperates, the lug 31 on the stop corresponding in length to the lug 32 of the key lever and the lug 32 on the stop corresponding in length to the lug 31 on the key lever. Each key lever is provided with a laterally projecting pin 33,which when the key lever is d eprcssed engages the rear end of the stop for said lever and thus swings the front end of said stop upwardly until its lugs 31 and 32 have come into contact with the bars 15 and 28 which are being forced downwardly by the stops or projections on the key lever. F urther downward movement of the key lever is prevented by the stop and as the bars 15 and 28 are clamped securely between said cooperating stops, the type plate will be locked in its adjusted position.

and verticallyby positively actuated links, thereby- {insuring an accurate alineinent of the characters and printing hammer.

The key levers are returned to normal position by of the machine, this constructionbeing inexpensive to manufacture and also enabling repairs to be made easily.

The printing of the capital letters and also some oftlie punctuation marks is effected by bodily shifting the type plate to the right of Fig. 5 so that portion of said plate which carries the capital letters and also some of the punctuation marks; namely, the left-hand half of said plate looking at Fig. 5, will oecupy the position formerly occupied by the right-hand half of said plate, the small and capital letters occupying the same relative positions on each half of the type plate. This bodily shifting of the type plate toward the right, to bring the capital letters into operative position, is produced by depressing the ca ital key, the lever of which is connected by means of link 34 to the arm 35 ofa bell crank lever. The other arm 36 of said lever is connected by means of a link 37 to thecross piece of a frame comprising arms 38 between which the type plate carrier and its returning spring 23 are located, one of said arms acting as the abutment'for the spring 23, as shown in Fig. 5.

The inking, ribbon 39 extends across the face of the type plate and through guides 40 on the ends of the arms and is Wound on spools 41 rotatably mounted on brackets 42 secured to the oppositeends of the rock shaft 5. Each spool is provided with a'ratchet 43 that cooperates with a pawl .44 pivotally mounted on the cross piece 3and forced into engagement with its ratchet by a sp1ing 45 Only one pawl is in operative position at a time so that the ribbon will be fed one step'forwa rd each time the rocking frame for the type plate carrier is actuated, thereby casuing the inking ribbon to be wound from one spool onto the other spool. When the spool has become filled its pawl is moved into an inoperative position and the pawl for the other spool is moved into-operative posi tion so that the ribbon will be automatically rewound onto said spool. i

I do not herein claim this ribbon mechanisrnas it forms the subject-matter of my pending application Serial No. 346,271, filed December 4, 1906.

A bar 46 is provided for governing the positions of the pawls 'for the ribbon spools and said bar is connected at its opposite ends to the pawls 44 so that movement of the bar in one direction will cause one pawl to become operative andthe other pawl inopgagoment with therear edge of the shank of theprint-"ISO so, i

ing hammer by means of a coiled spring 53 connected to said hammer and pin 52, as shown in Fig. 3.

Means is provided for locking the rock shaft 48 to hold the printing hammer in inoperative position away from the type plate. Said means consists of a spring-actuated plunger 54 mounted in an arm 55 connected to the left-hand end of the shaft 48 and coiiperating with a ratchet toothed wheel 56, as shown in Figs. 2 and 8. This ratchet toothed wheel is fas tened to the shaft 57 of the spring motor 55 which is connected by a band 58 to the paper carriage 59 for moving said carriage from right toleft, said carriage traveling transversely of the machine on the track 59 and being of substantially the same construction as shown in my pending application Serial No. 346,272, filed December 4, 1906.

Referring again to the locking means for the shaft 48 on which the printing hammer is mounted Fig. 3 shows the printing hammer in its inoperative position and at such times the arm 55 on the end of the shaft 48 will occupy the position shown in Figs. 7 and 8- due to the force which the ratchet toothed wheel 56 exerts on the arm 55 by means of the spring-pressed plunger 54, thereby securely locking the shaft 48. Whenever the locking dog 54 is withdrawn from engagement with the ratchet toothed wheel 56 the shaft 48 will be unlocked and the spring 51 connected to the tail end of the arm 49, will then rock said shaft in the direction of the arrow in Fig. 3 to cause the pin 52 atthe upper end of the arm 49 to engage the shank of the printing hammer 47 and move it toward the printing plate. The forward movement of the arm 49 is suddenly arrested by a fixed stop 61 which engages the tail 50 on the end of said arm before the printing hammer has-struck the character on the type plate but the momentum will cause said hammer to continue its forward movement and strike the character on the type plate a quick sharp blow, the hammer being then moved out of engagement with said character by means of the spring 53, the printing hammer not being returned to normal position, however, until the key is released.

The great advantage of a construction of this character is that it causes the hammer to strike the character on the type plate with a substantially yielding pressure which is always the same irrespective of the force with which the operator strikes the keys on the key levers 16. The locking plunger 54 is withdrawn from engagement with the ratchet toothed wheel 56 by means of a link162 provided at its upper end with a wedge 63 that extends underneath a head (54 on the end of said plunger, as shown in Figs. 2 and 7, the lower end of said link being connected to a rock arm 65. A-rod 66 is connected at one end to the rock arm and at its other end to a rock arm at the other side of the machine, and said rod extends underneath all of the key levers so that whenever one of said levers is depressed the link 62 will be elevated to cause the plunger 54 to be moved out of engagement with the ratchet toothed wheel. As soon as the shaft 48 has been rocked forwardly by the means previously de scribed, the locking plunger 'will he released from errgagement with the wedge on the end of the link 62 due, to the fact that the arm 55 has rocked upwardly and said plunger will then move into engagement with a different tooth on the wheel 56. When said wheel rotates; namely, when the paper carriage moves one step laterally, the movement of the ratchet toothed wheel will rock the shaft 48 in the reverse direction to that indicated by the arrow inFig. 3 and thus return the printing hammer to its inoperative position away from the type plate. The key levers 16, as previously described, are returned to normal position by means of springs 34 and the weight of the link 62 causes it to drop down to its normal position as soon as the key levers pass out of contact with the-rod (56.

As. previously stated, the paper carriage is moved transversely of the machine by means of the spring motor 58, a stcp-by-stcp movement being given to the carriage by means of an escapement mechanism which may be of any preferred design. I have herein shown an escapemcnt mechanism which consists of a rock arm 67 provided with a fixed tooth and a yielding tooth that cooperate with an cscapcment wheel 68 on a vcrl ical shaft 69 mounted in an oscillating frame 70 at the rear of the machine, the shaft 69 being provided at its upper end with a pinion 71 that meshes with a rack 72 on the paper carriage when the oscillating framc is in normal position. A bar 73 is connected by rncans of links 74 to arms on the rock shaft U7 to which the arm 67 is secured, and said bar extends nndrrncath all of the key levers and also underneath the levers 75 of the spacing key 76 so that when the spacing key or any of the type keys are dcprcsscd the arm 67 will be rocked and thus permit the shaft 69 to rotate so as to move the paper carriage a distance of one lcltcr space.

The paper carriage is provided with an apron against which the sheet of paper lays and with a paper fccding roll 75 of the same construction as shown in my pcuding application Serial No. 346,272, above referred to, said feeding mechanism comprising a rock lever 76 provided with a pawl which coiiperatcs with a ratchet wheel on the end of the feed roll, said rock lever being connected to a transverse rod 77. A link 78 is fastened to said rod and is provided at its lower end with an elongated slot which receives a pin 79 on the end of a lever 30 pivotally connected to a stationary member, the free end of said lever extending into the path of a projection 81 on the drunr 58 so that said lcvcr will be automatically actuated to pull the link 78 downwardly and thus actuate the feeding pawl when the drum 58 reaches a certain position. preferably, when the paper carriage reaches the end of its transverse movement.

The machine herein shown is also provided with mechanism for arresting the paper carriage at certain positions in its lateral movement to enable tabular work to be performed but as said mechanism is substantially the same as that shown in my pending application Serial No. 346,273, filed December 4, 1906 a detailed description of same is not deemed necessary. Briefly stated, said mechanism comprises tabulating keys 82, the leversof which are connected by means of links 83 to stop levers 84 that cooperate with stop pins on a disk 85 secured to the front end of the shaft 86 of a spring drum'60 having a weaker spring than the motor 58 and being connected by a band 60 to the paper carriage, the oscillating frame being actuated to move the gear on the escapement shaft out of contact with the rack on the carriage, by the ends of the tabulating key levers which engage a cam on the escapement shaft. In the construction herein shown the escapement shaft oscillating frame can also be actuated by pressing the disk 85 rearwardly,-the shaft 86 of the drum 6O being secured at its rear end to .one of the arms of the oscillating frame 70, as shown in Figs. 3 and '4. As soon as the disk 85 is relieved from pressure the oscillating frame 70 will be returned to normal position so as to bring the pinion 71 on the escapement shaft into mesh with the rack on the paper carriage by means of a spring 87 surrounding the shaft 86 between a stationary abutment 88 and a collar 89 on said shaft.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A typewriting;machine comprising a type plate, key levers provided with differential contact surfaces, members adapted to be actuated by said contact surfaces for moving the type plate vertically and horizontally, and means arranged oppositely to said contact surfaces and in vertical alinement therewith to engage the opposite sides of said members and thus lock them in the positions to which they have been moved by the key levers; substantially as described.

2. A typewriting machine comprising a type plate carrier, key levers provided with differential contact surfaces, members adapted to be actuated by said surfaces for moving the type plate carrier vertically and trans- .versely, and means movable relatively to said key levers and arranged oppositely to said contact surfaces to cooperate therewith for controlling the. degree of movement imparted tothe members that move the type plate carrier substantially as described.

3. A typewriting machine comprising a type plate carrier, key levers provided on their lower sides with contact faces, members arranged underneath said contact faces levers provided with differential contact surfaces, members adapted to be actuated by said surfaces for moving the type plate vertically and transversely, and stops provided with differential surfaces which cooperate with those on .the key levers for governing the movements of said members; substantially as described. 1

5. A typewriting machine comprising a type plate carrier, kcy levers provided on their under sides with differential contact surfaces, members arranged underneath said key levers and adapted to be actuated by the differential contact surfaces thcrcon for moving the type plate carrici vertically and transversely, pvotally mounted stops provided with differential contact surfaces which cooperate with those on the key lovers to clamp said members, and means on the key levers for actuating said stops; substantially as described.

ii. A typcwriting machine comprising a type plate carricr, key levers, a member arranged under said levers and adapted to .be actuated thereby, a positive connection between said member and carrier, thcrcby insuring thc same degree of movement being imparted iii the carrier that is imparted to said member, :ind movable stops located underneath said member and udnptcd to be actuated by the key lovers for controlling' the limit of movement of said member; substantially as described.

7. A typewriting machine comprising a type plate car-' rier, an oscillating frame on which said carrier is mounted, key levers, all of which are arranged parallel to each other and provided with dlfierential contact 1 surfaces,, parallel members extending across ail of said levers and adapted to be actuated by said contact surfaces, a linkconrod extending trans necting one of said members to the oscillating frame for moving the type plate vertically, a device for moving said type plate carrier transversely of its frame, a bell crank pivotally connected to said device, and a link connecting said bell crank to the other member which the key levers actuate; substantially asdescribed. i

S. A typewriting machine comprising a paper cdrriage and means for moving it, atype plate, a cooperating hammer, a rock shaft on which said hammer is looselyr mounted, a yielding connection between said shaft an hammer, key levers, means for locking said shaft to hold the hammer in an inoperative position, means actuated ,by the depression of the keys for releasing said shaft,

means for. rocking the shaft to actuate the hammer, and means actuated by the carriage moving means for rocking the shaft in the opposite direction to return the hammer to its normal position; substantially as described.

9. A 'typewriting machine comprising a paper carriage and means for moving it, a type plate, a cooperating hammer, means for moving it toward the type plate, a' rock shaft on which the hammer is mounted, means for transmitting the movements of said arm to the hammer, and a toothed wheel actuated by the carriage moving means for engaging an arm on said rock shaft to return the hammer to normal position; substantially as described. 10. A typewriting machine comprising a paper carriage, a spring drum for imparting movement to same, a type. plate, a cooperating hammer, a rock shaft provided with an arm for engaging and moving said hammer toward the type plate, means for actuating said shaft, an arm connected to said shaft and having a plunger mounted therein, and a ratchettoothed wheel secured to the shaft of the spring drum and cooperating with said plunger to return the rock shaft to normal position and lock it; substantially as described.

11. A typewriting machine comprising a type plate, a hammer coiiperating therewith, mechanism for moving the hammer towards and away from the type plate, a locking device for retaining the hammer in an inoperative position consisting of a spring-actuated plunger cooperating with a member that moves step by step with the paper carriage of the machine, key levers, a member actuated by said key levers, and a link connected to said member for moving the plunger into an inoperative position to release the hammer; substantially as described.

1:. A typcwriting machine comprising a paper carriage .provided with a rack, an escapement shaft provided with a -tionary abutment, and a collar on the shaft for holding the oscillating frame in normal position, a stop disk secured to the front end of said shaft, and movable stops cooperating with the stop onsuid disk; substantially as described.

13. A typewriting machine provided with key levers, a. cly of said key levers, a U-sh'aped device mountcd on sand rod, and coiled springs secured to said U-slnipedmcmber and to the key levers, some of said springs being connected to one leg of said member and the other springs being connected to the other leg of said member; substantially'as described.

14. A typcwriting machine comprising key le'vers, a transversely ex'tcndlng rod arrangedover said levers, links for supporting said rod, a U-shaped member mounted on said rod, and coiled springs connected to the Ushaped member and to the key levers,-some of said springs being coimcctcd to one leg of said member and the other springs \VILLIAM \V. HOPKINS.

Witnesses: I

Wmms L. Ciinncrr, (irionun Bannwnnn.

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