US1018968A

US1018968A - Type-writing machine.

Info

Publication number: US1018968A
Application number: US20520304A
Authority: US
Inventors: Carl Gabrielson
Original assignee: L C SMITH AND BROS TYPEWRITER Co
Current assignee: L C SMITH AND BROS TYPEWRITER Co
Priority date: 1904-04-27
Filing date: 1904-04-27
Publication date: 1912-02-27
Anticipated expiration: 1929-02-27

Description

O. GABRIBLSON.

TYPE WRITING MACHINE. APPLICATION FILED APR. 27, 1904.

' Patented Feb. 27, 1912.

4 SHEETS-SHEET 1.

HUB

0. GABRIELSON. TYPE WRITING MACHINE.

APPLICATION FILED APR. 27, 190%.

Patented Feb. 27, 1912.

hwemfor lvil ncdaeo 4/6,

C. 'GABRIELSON.

TYPE WRITING MACHINE. APPLICATION FILED 3.27, 1904 Patented Feb. 27, 1912.

4 SHEETS-SHIJBT 3.

0. GABBIELSONL TYPE WRITING MACHINE. APPLICATION I'IL-BD AIBJ2'7, 1904.

Patented Feb. 27, 1912 4 SHEETSSHEET 4.

M M m W U TED STATES FATE T F E- CARL GABRIELSON, OF SYRACUSE, NEW YORK, ASSIGNOR TO L. C. SMITH AND BROS. TYPEWRITER COMPANY, OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent. Patented Feb, 27, 1912.

Application filed April 27, 1904. 7 Serial No. 205,203.

To all whom it may concern:

Be it known that I, CARI. GAlBRIEIiSON, a

citizen of the United States, residing at Syracuse, county of Onondaga, and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

This invention relates to typewriting machines and it comprises especially a typebar segment which is shiftable to move the type-bars for printing either upper or lower .case, means for supporting and guiding the view of the shift keys; Fig. 4 is a vertical elevations illustrating in two positions the' mechanism for shifting the type-bar supsectional view about on the line BB of Fig. 1; Fig. 4 is a plan of the type-guide shown in Fig. 4; and Figs. 5 and 6 are side port or segment.

Referring to the drawings, 20 indicates the frame of the machine and 21 the platen.

The type-bars 22 are mounted upon a segment 23, as illustrated in Figs. 1 and 4, be-

ing pivoted to hangers 24 which are -re-' movably secured to the segment. These 40' type-bars are arranged to strike rearwardly and upwardly, producing impressions upon the front of the clearly visible to the operator. Each typebar is provided with an ear or projection 29 to [which its operating link 30 is .pivotally connected. The links 30 are preferably U- shaped in cross section and are constructed of spring sheet metal and provided with ears which embrace the projection 29. The hangers 24 are provided with elongated platen where they arev openings 41 which render them adjustable toward and from the printing point, to fa I by the links 30 previously described. \Vhen a key lever is depressed the upper endof'the sub-lever is rocked rearward carrying the free end of the type-bar to the printing point on the platen 21. The keys are provided with curved bearing notches 49 which cooperatewith the curved bearing on the lower edge of a transverse bearing bar 50, the key levers being held against the bar by springs 51. The springs 51 connect the key levers with adjusting screws 52. These screws are provided with threads of slightly greater pitch than the springs when the latter are not under tension. The screws therefore. engage the springs with sufiicient friction to prevent slipping and the tension of the springs may be regulated by turning the screws. The screws are mounted in a transverse bar 53. The keys work in combs- 54, 55 which hold. them in proper relation to each other and guide them vertically. The key levers and type-bars and their intermediate connections are held in their normal the sub-levers 45 of Fig. 4 are shown inrear' elevation.

The segment 23 has supporting legs or extensions 71 which are plvotally connected with arms 72 upon a rock shaft 73. (Figs. 1, 3,4, 5 and 6). The rock shaft 73 has at its left end an arm 7 4 carrying an antifric- I tion roller 7 5. The arm 74 has some resilience, for a purpose to be presently explained. A key lever 76 is provided for temporarily raising the segment 23 when it is. desired to Write a single capital or'figure and a second key lever 77 is provided for raising the segment and holding it in raised position to write, for instance, a line of capitals. The key lever 76 is connected by a pinand-slot connection 78 with an elbow lever 79 having a 'cam sha ed end- 80 located under the roller 75. Wiien the key lever is depressed the upper arm of lever 79 is thrown forward and its cam' surface 80 operating on roller 75 rocks the shaft '73 and raises the drops into the notch 83 and locks the key le;

ver down and the segment up. The elbow lever 82 hasa third arm 84 carrying a roller 85 which rises to a position just under key lever 76 when the segment is locked up as shown in Fig. 5. The-segment may be unlocked and permitted to fall by depressing key lever 76 upon roller 85, thus rocking the upright arm or lever 82 rearward. Thenormal position of both

levers

79 and 82 is shown in Fig. 4:, while the segment is shown locked in uppermost position in Fig. 5, and held teniporarily in its upper position in Fig. 6. j V

The levers 7 6, 77, may be mounted like the other key levers upon the pivot bar 50, and

provided with springs 51. The elbow levers 79 and 82 are mounted upon a bracket 86 which is sustained from the main frame by screws 87. The screws 87 pass through hollow screws 88 threaded int-o the main frame and the bracket is drawn tightly against the hollow screws by the screws 87 By loosening the screws S7,the screws 88 may be raised or lowered to adjust the height of the bracket 86, which should then be fastened tightly inplace by the screws 87 The segment is provided at each end with ball-bearings to permit it to rise and fall freely, as shown 'in Figs. 1 and 1 A bracket 89 is provided at each end of the machine to support and guide the segment.

A cylindrical opening is formed in a boss 90 of each bracket and in this openingas a block 91 having in its inner end a Vshaped groove or ball-race. Block 91 is shown as held in position by a screw 92 bearing upon a flattened portion of the block. The brack ets 89 also carryvertically adjustable stops 93 which limit the downward movement of the segment 23. At the'ends of the segment are angularly adjustable ballraces 94 in which single balls'95 run. Connected with theframe of the machine are adjustable stops 96 which limit the upward movement of the segment. As shown, the ball-races'94 are formed in T-shaped pieces 103 suitably secured to the segment. The balls are retained by the walls ofthe boss 90, which close the ends of the ball races in block 91, while the ball races 94 prevent escape of the balls laterally. In this simple manner ball retainers are dispensed with. A spring 120 may be used to partially counterbalance the segment 23 if desired. It will be noted that the segment is capable of a slight lateral adjustment by virtue of the adjusting screws 92 of the ball bearings and the adjustable bearings 71 in the legs 71. This feature is of considerable importance as it permits of ac.- curate adjustment of the segment with reference to the type guide.

The machine is provided with a type guide 97 adapted to accurately direct each type to the printing point. It is important that this type guide should move withihe type segment in order that the guide may cooperate at all times with the same part of each type-bar. To'aecomplish this the type guide 97 (Figs. 1, 4: and?) is carried by a slide 98 which has ball-races in its edges and which runs on three ball-bearings 99, two on one side and one on the other. balls are held in place by a retainer 1'90 having openings to receive them and they run in' The three I provided with the usual carriage and means for feeding the same to space for letters and words and means for line spacing. The present invention relates only to the mechanism for operating the type-bars, for shifting the type-bars to rint upper and lower .case and for guiding the type to the print ing point.

Having described my invention what I claim and desire to secure cnt is,

by Letters Pat- .1

1. The combination withthe frame, of an 7 upwardly shifting and laterally adjustable segment'and laterally adjustable guides for guiding the segment in its shifting movements.

\ 2. In a typewriting machine, the combination with the frame, of an upwardly shifting and laterally adjustable segment, brackets connected to the frame, and guides supported by the brackets for guiding the segment in its up and down movements, said guides being horizontally adjustable.

3. In a typewriting machine, the combina tion with the frame, of an up and down shifting segment, and angularly adjustable guides for said segment.

4. In a typewriting machine, the combination with the frame and an up and down shifting segment, of pairs of ball-races forming guides for said segment, and balls in said races, one race of each pair being angularly adjustable.

5. In a typewriting machine, the combination with an upwardly movable segment,

a rock shaft having an arm connected to said segment, a spring arm connected to the rock shaft, means for operating said spring arm to move the segment and means cooperating with the spring arm to lock the segment in its upper position.

. shaft having an arm connected to said -

meut levers

79, 82, operating to rock'- said 6. In a typewriting machine, the combination of a movable segment, a rock shaft having an arm connected to said segment, a spring arm on said rock shaft, and a cam lever operating on said spring arm to shift the segment. I

7. In a typewriting machine, the combination of a movable segment, a rock shaft having an arm connected to said segment, a spring arm on said rock shaft, and a pair of levers arranged to operate on said spring arm toshift the segment, one of said levers being arranged to interlock with the spring arm to prevent the return of said segment.

8. In a typewriting machine, the combination of a movable segment, a rock shaft connected to operate said segment, an arm on said rock shaft, and a pair of levers arranged to operate on said arm to shiftthe segment, one of said levers being arranged to interlock with the arm to prevent the return of said segment;

. 9. In a typewriting machine, the combination with a shifting segment, of a rock shaft having an arm connected to said segment, a second arm on said rock shaft, levers operating to rock said shaft, and 'keys for operating said levers, one of said levers being constructed to interlock with said second arm to-prevent return of the segment.

10. In a typewriting machine, the combinationwith a shifting segment, of'a rock shaft, an adjustable. bracket uponwhich said levers are pivotally mounted, and keys pair of

levers

79, 82, cooperating with said pin or roller, each of said levers having a cam surface for raising the pin or roller and one of the levers having a notch adjacent to theca-m surface in which the pin or roller may rest to prevent return of the segment.

12. In a typewriting machine, the combination with the key levers, of coiled springs for sustaining the levers in normal position, and adjusting screws entering and engaging said springs, said screws having a pitch slightly greater than the pitch of the springs when the latter are not under tension, for the purpose described. I

13. In a typewriting machine, the combination with a shiftingsegment, of blocks 91 having ball races therein, and holders for said blocks adapted to close the ends of'the ball races to prevent escape of the balls.

14.. In a typewriting machine, the combination with the segment, of a bearing there for comprising two ball races and an intermediate ball, a laterally adjustable block in which one of said races is formed, and a cylindrical holder for said block adapted to close the ends of the ball races the purpose set forth.

15. In a typewriting machine, a sliding type bar segment and guides therefor, in combination with a type guide, and means for adjusting the segment relatively to the guide.

16. In a typewriting machine, the combination with the type guide, of a slidable shifting segment and guides therefor, and means for adjusting the segment laterally and relatively to the type guide.

17. In a typewriting machine, the combination with a slidable type bar segment having ball races, of ball bearings therefor, and means for adjusting said bearings to shift the segment laterally.

18. In a typewriting machine, the combination of a movable segment, a rock shaft connected to said segment, a spring arm connected with said'shaf-t and adapted to' rock the same to raise the segment,- two levers each adapted to coiiperate with said arm to shift the segment, said arm being adapted to move upwardly beyond the positioii assumed when the segment reaches therein, for

its upper limit, and means for locking the operate with said arm to raise the segment, In testimony whereof I have signed my said arm being adapted to be moved above name to this specification 1n the presence of the posltlon assumed when the segment is two snbscrlbl'ng witnesses.

in its upper position when actuated by one v CARL GABRIELSON. of said levers, and means connected with one Witnesses Y of said levers for engaging saidarm and C. M. STEVENS,

holding the segment in its upper position. I I C. F. PARSONS.