US1203633A - Type-writing machine. - Google Patents

Description

A, G. F. KUROWSKI. TVYP'E wrmms MACHINE. APRLICAIION FILED NOV. 22, 1912.

1,203,633. r Patented Nov. 7, 1916.

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- I ATTOBY INVENTOB: WITNESSES: 4 77 1 the carriage during the letter-feeding operat each letter-feed movement also causes a.

To all whom it may concern:

ALrnEn e. E. xuzaowsxr, o 'n w ronng n. "1., asisrenon r0 unnnnwoon TYPE- wnI'rEE COMPANY, on NEW man, n. m, a conronarron OF DELAWARE.

' 'rYrE-wmrrne macHrnEl- Be it known that I, ALFRED F. KU-

ROWSKI, a citizen of the United States, re-

siding in Brooklyn borough, New York city, and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, 0f which the following is a specification.

This invention relates to typewriting maation.

Heretofore it has been customary to provide a fixed connection between the machine frame and the usual rubber feet, and when the returning carriage strikes the-stop at the starting, point of the writing line,-or-

whenever a tabulator stop arrests the carriage,the shock is felt throughout the ma-' continuous vibration of the machine frame,

which results in rapid and uneven wear of the rubber feet, so that the machine does not rf'emain level or firmly supported on its four eet.

The main object of this invention is to overcome these objections by the provision of means for absorbin the lateral vibrations to which the machine 1s subjected. For this purpose, shock-absorbing devices are interposed between the machine frame and the usual rubber feet. Such devices may comprise casings connected to the machine frame and opening downward to receive'blocks to I which the rubber feet are secured, springs being interposed between said blocks and the casing to permit movement of the machine frame relative to'the feet in. the direction of o the carriage travel. Roller bearings interposed'between'the feet and machine, frame to 1 permit lateral movement of the machine'in absorbing vibrations or shocks, may co n prise rollers extending through slots in said casings an blocks, the weight of the machine being supported on said rollers.

Other features and advantages will here inafter appear.-

' Application filed November 22, 1912 Serial No. 732.806.

often with considerable force.

' In the accompanyin drawings, Figure- 1 nderwood typewriter is arear View of an to whlch my improvements-fare applied.

Fig. 2' is a sectional elevation through the foot and theshock-absorber. ;Ei1g.- 3.isa

section through Fig. 2 on a line indicated by Fig. 4 is a detail'perspective of the arrows. the various parts of my improvements. The carriage 1 'is drawn as usual by a spring'2 fromright to left step bysstep upon a track 3 on the machine frame 4. the carria e is returned to the right for a. new l1ne y means of the line-space lever' (not shown), it is brought against'a stop 5, With the usual mounting of the machine frame, which permits little or no movement of the frame in a lateral direction, this sudden stoppage of the carrlage sub ects the entire machine to a shock or ja'r.' The same is true when Specification of Letters new: Patented Nov. 7,1916.

the carriage is stopped by ,a tabulator stop after. being permitted to run?- forward some distance. To overcome these objections, and also to absorb the vibrations due to theletter-feed' movement of the carriage, shock absorbers are placed between the main. frame 4: and the feet 6 upon which the machine is supported. The main frame l is mounted upon elongated, inverted cup-like casings 7 whose inner'sides formchannels or guidewaysfor blocks 8 attached to the feet 6, said channels extending in the direction of the carriage travel so that thetypewriter is permitted to give or slide whenever a shock'is received. I g

Whenever the typewriter frame is struck by the carriage as the return movement of the carriage is arrested, the machine frame will yield against the resistance of compression springs 9 working between casings 7 on the main frame 4 and the blocks 8 attached to the feet 6. Screws 1O adjustable in the ends of the casings 7 form abutments for the i I springs 9, whereby the tension of the springs may be adjusted.

The casings 7 move over the blocks 8 upon rollers 11 which extend. through slots 12 in the sides of said casings and blocks the -weight of the machine being supported on the rollers. .These rollers will also prevent the feet from dropping out of the caslngs when the typewriter is raised, and are ke t from slipping through the slots by their wide heads '13 at one-end, and nuts 14 at their other end. The'rubber feet 6 are protected against being worn or cut by the casings 7, by providing the blocks 8 with As the casings flanges which overlap the side edges of the casings; Each casing-7 may be attached to the main frame 4 by means of a counter-sunk ,screw' 16, which is easily reached when the screw 17, holding the foot in either direction, the shock-absorbers will work equally. as well if the carriage pro jection 19 strikes a tabulator stop 20 during the forward run of the carriagein tabulator work, as when the carriage is stopped in its return movement.

' As the typewriter can only move laterally over the feet, none of the manifolding power of the type bars, which strike transversely, is lost inthe shock-absorbers v Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention I claim: J

1. In a typewriting machine, the combination with the machine frame and feet supporting the weight of the frame, of casings attached to the frame, springs in said casings between each casing, and the corresponding foot adapted to absorb lateral shock, and connections between said casings and feet whereby lateral movement of the casings with respect to the feet is permitted, 2. In a typewriting machine, the combination with the machine frame and feet supporting the weight of the frame, of shock absorbers comprising casings attached to said frame and slidable laterally over said feet, and compression springs in said casifngs between said frame and its supporting est.

3. In a typewriting machine, the combi nation with the machine frame and feet carrying the weight of the frame, of shock absorbers comprising casings secured on the frame and slidable laterally over the feet, compression springs between said casings and feet, and means to adjust the tension on said springs.

4. In a typ'ewriting machine, the combination with a main frame and feet of elastic material to support the machine, of casings fixed to the main frame, blocks secured to said feet, bearings between said blocks and casings permitting movement of the frame relative to said blocks in the direction of the carriage travel and shock reducing c springs between the casings and feet.

5 In a typewriting machine, the combi nation with a machine frame and feet supporting the weight of the machine, of shock absorbers comprising blocks fixed'to said feet, casings fixed to the main frame and slidable over said blocks, said blocks and casings provided with slots, roller bearings extending through said slots for permitting lateral movement of the frame on said blocks, and springs opposing said lateral movement. f

6. In atypewriting machine, the combination with the main frame and feet supporting the weight of the frame, of slots I forminga sliding connection between said feet and frame, permitting lateral movement of theframe relative to' the feet in the di= rection ofthe carriage travel, and preventing'relative-movement of the frame and feet in, a forward or rearward direction, and means to" yieldingly oppose said lateral movement of the frame.

7. In a typewriting machine, the combination with the machine frame, of rubber feet, blocks secured to said feet, casings secured to the machine frame and elongated in the direction of the carriage travel, said casings forming guides and supports for said blocks, and coil springs interposed between said blocks and the ends of the casin s.

8. In a typeWriting machine, the com ination with the machine frame, of rubber feet, blocks secured to said feet, casings secured tothe machine frame and elongated in the direction of the carriage travel, said casings-forming guides for said blocks, coil springs interposed between said blocks and the ends of thecasings, ,and roller bearings between said blocks and casings permitting said relative movement of the blocks and casings. I v

, 9. In a typewriting machine, the combination of themachine frame, supporting feet therefor, slots and connecting means be-, tween said feet and the machine frame adapted to restrict horizontal movement in a forward and rearward direction of said frame relatively to said feet and to permit free lateral movement thereof, and means for cushioning all laterally exerted vibratory shocks and impulses to .which said frame is subjected.

10. The combination with a typewriting machine, of supporting feet therefor, the machine being mounted for a limited horizontal vibratory movement relatively to the said feet in one direction, anti-friction bearings between the said feet and the machine frame arranged to reduce the frictional resistance to such horizontal movement of the machine, and means for cushioning all vibratory shocks and impulses to which the machine frame is subjected in the direction in which it is movable relatively to the feet.

11. The combination with a typewriting machine comprising a carriage having a horizontal travel, of feet supporting the weight of the machine, the machine being mounted for a movement relatively to said feet in the direction of the carriage travel,

anti-friction bearings between said feet and the machine frame arranged to reduce the frictional resistance to said horizontal movement of the machine, and cushioning means yieldingly opposing the movement of the machine relatively to the feet in said horizontal direction, and thereby cushioning all vibratory shocks and impulses to which the machine is subjected in the direction of the carriage travel.

12. The combination with a typewriting machine comprising a carriage having a horizontal travel, of feet supporting) the weight of the machine, the machine eing mounted for movement relatively to said feet in the direction of the carriage travel, anti-friction bearings between said feet and the machine frame arranged to reduce the frictional resistance to said horizontal movement of the machine, cushioning means yieldingly opposing the movement of the machine relatively to the feet in said hori-x zontal direction, and thereby cushioning all vibratory shocks and impulses to which the machine'is subjected in the direction of the carriage travel, and means to restrict the machine against horizontal vibratory movement relatively to said feet in a direction transverse to the direction of the carriage travel.

opposing said movement of the machine frame relatively to the feet, whereby shocks and vibrations to which the machine is sub jected in the direction of the carriage travel are cushioned, and means to restrict the machine frame against horizontal movement relatively to the supporting feet in a direction transverse to the direction of travel of the carriage; 7

ALFRED G. F. KUROWSKI; Witnesses J. A. BRornY, F. E. ALEXANDER.

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