US884638A - Type-writing machine. - Google Patents

Description

PATENTED APR. 14, 1908. H. A. GARHART.

TYPE WRITING MACHINE. I APPLICATION FILED AUG. 29. 1907.

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V WITNESSES. MW

INVENTOH llllllllllll MMM ATTORNEY PATENTED APR. 14, 1908.

H. A. CARHART.

TYPE WRITING MACHINE. APPLIUATION IIILED AUG. 29. 1987.

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WITNESSES:

INVENTOR HTTOR/VEY UNITED STATES PATENT oFmoE.

HERBERT GARHART, OF SYRACUSE, NEW YORK, ASSIGNOR TO ALEXANDER T. BROWN, OF SYRACUSE, NEW YORK.

TYPE-'WBITIN G MACHINE.

Specification of Letters Patent.

Patented April 14, 1908.

Application filed Angult 29, 1907. Serial No. 390,601.

1'0 all whom it may concern:

Be it known that I, HERBERT A.- CARHABT,

citizen of the United States, and resident of- My invention relates to typewriting ma'- chines and especially to a type bar and hanger construction for such machines. One of the "ob ects of m invention is to provide an improved ball caring type bar pivot; another object is to provide a novel constrilction of pe bar hanger having two typebars pivotei thereto, one on each side of the ban er; another object is to make rovision or an arrangement of type ars whereby the room in the type bar segment is relation to each other.

economized to the best advanta e To these and other ends which will hereinafter appear, my invention consists in certain features of construction, and combinations and arrangement of parts all of which will be fully set forth herein, and particularlypointedout in the claims.

In the accompanying drawings :Figure 1 is a side elevation showing two type bars and the means for actuating the same, arts of a, front strike ty ewriting machine eing diagrammatically s 1own,-some of them in section. Fig. 2 is a side view of two type bars mounted on a sin 'le han er and off-set with plan view of the right-hand half of a front strike ty e bar system constructed in accordance w1t my invention, parts being shown in section I My invention is a plicable to typewriting machines generally, but I have here shown it applied to a front strike typewriter. Said typewriter comprises a platen 10, a type bar segment 11, a sub lever se I ment 12,- and printing key levers 13,-which ast are pivoted at their rear ends on a cross bar 14.

The t pe bar segment 11 supports a series of t pe h a p ate-like'stem 15 which extends through and is seated in a suitable slot in the segment 11, and secured therein by a headed screw 16 threaded into the segment b the side of the v hanger stem and having its read bearing on the upper edge of said stem; the hangers may,

"however, be secured to the segment in any other suitable manner. The forward end of ig. 3 is a developed.

ar hangers each of whlch comprises 18 secured to the face ofthe associate( circular boss on the hanger by a headed screw 1 9, the head of said screw bein preferably counter-sunk into the plate as shown, so as not to pro'ect beyond the plate and thus unnecessari y to widen or thicken the bearing. Pins 20 passing through the plates 18 and into suitable openin s in the faces of the circular bosses on the rangers, prevent the plates from turning on the screws 19. Each plate 18 has a conical periphery 21, which in con- 'unction with the conical periphery 17 of the oss of the hanger forms a circular race-wa which is V- rooved in cross section for antlfriction balls 22, and each of the type bars 23 has at its-pivotal end a circular ring or eye 24 which has an internal substantially V-shaped groove or ball race and constitutes the movable member of the ball bearing.

It will of course be understood that the bearing may be adjusted by tightening or loosenlng the screw 19. It will also be understood that as far as some features of my invention are concerned the details of the bearing may be varied and other means of adjustment rovided.

The bal bearing justd'escribedis du licated on the other side of the hanger so t at two type bars are mounted on each hanger, the two type bars being so arated only by the thickness of the platee stem 15 of the hanger. As these, two type bars swing not in parallel planes but in planes which converge at the printing point, the two faces of the hanger and the conical eripheries 17 of the two bosses are not para el but are suitably inclined with relation to each other.

' Each circular series of balls-22 is situated in the median plane of the associated type bar and in the plane of its movement and is made of a diameter sufficient to steady the type bar in its swinging motion toward the rmting point so that there is no tendency to .ateral deflection of the type bar due to cen- I trifugal force.

- The typewriting machineishown in the drawings s a shift machine and each of the bars at different angles as indicated in Fig. 3, and in order to economize the room in the seg'ment and to prevent-the type blocks of a jaeent ty e bars from interfering with each other, mount those type bars that are near either end of the segment in a skewed arc, said type bars being mounted progressively nearer to the back of the machine as the end of the segment is approached.

In Fig. 3 I have shown sixteen type bars on the right hand half of the segment 11, said type bars being mounted on' eight hangers. The five hangers nearest the middle of the segment are at the same distance from the front of the machine, but the three hangers nearest the'end of the segment are progressively stepped toward the rear of themachine, thesegment itself being bent toward the rear. near its end as indicated in Fig; 3.

posite to each other or are in ali'nement,

In order that the progressive stepping of the type bars toward the rear may be regular these three end hangers are constrhcted differently from those-hangers near the middle of the machine. In the middle hangers the two hearings on each hanger are directly op- Whereas in each of the end hangers the bearings are oif-set or out of alinement, the one nearer the end of the segment being also nearer the-rear of the machine. Moreover this off-set is diflerent in extent in the different hangers, the hanger at the extreme end of the segment havin its two bearings off-set to a greater extent t an the others; this being done on account of the fact that the type blocks 25 of the type bars mounted on this hanger stand more nearly at right angles to the type bars than is the case'with those type bars on the other hangers. The hanger and type bars shown in Fig. 2 are the ones at the extreme end cf the segment as shown in Fig. 3, and in said-figures the extent of off-set is indicated by the lines a and b which pass through the respective centers of the two bars. 7

As far as some of the features of my invention are concerned any suitable means for actuating the type bars may be provided. As shown in the present instance, each of said type bars is provided at the heel thereof with a lug or arm 28 to which is pivoted the rear end of a link 29 which lies beneath the type bar and which at its forward end is connected with the upstanding arm of a bell crank sublever 30 having a forwardly extending arm which is connected with a key lever 13 by a vertically disposed link 31. Each of the sublevers 30 is pivoted at 32in a hanger 33 proassessby Letters Patent, is

1. In a typewriting machine, the bombination of atyipe bar hanger and two type bars one pivote on each side of said hanger, the

ivot for one type bar being off-set with reation to the pivot of the other type bar.

In a typewriting machine, the combination of a type bar hanger having on each side thereof a boss which constitutes one part of a ball bearing, and two type bars, one ivoted to each side of said hanger by said ba I bear ing, the pivotal center of one of said bearings being -oil-set with relation to that of the other.

3. In a front strike typewriting machine, the combination of a type bar se ment, a series of type bar hangers mounted on said segment, and a series of type bars ivoted to said hangers, the type bars near t e ends of the segment being pivoted progressively nearer to the rear of the machine, each of said hangers having a plurality of type bars pivoted thereto, and each of the hangers near the ends of the segment having the type bars pivoted thereto at diilerent distances from'the rear of the machine.

4. In a front strike typewriting machine, the-combination of a series of front strike pivoted type bars, a segment in front of the pivots of saidtype bars and having'a type rest on its upper edge, sub-levers pivoted to the front of said segment, links connecting said sub levers with said type bars and passing through said segment, and keys for actuating said sub-levers.

5. In a typewriting machine, the combination of a series of segmentally arranged type bars, a series of individual hangers, a plurality of type bars being mounted on each hanger, the construction and arrangement of the arts and theconnection'of type bars to theliangers beingsuch that the types are arranged in a skewed are when in normal position.

6. In a typewriting machine, the combination of a series of segmentally arranged type bars, a series of individual hangers, a plurality'of type bars being mounted on each han er, the connection of the type bars to the angers being such that the pivots of the type bars are arranged in a skewed are.

7. In a typewriting machine, the combination of a series of segmentally arranged type bars, a series of individual hangers to-which has 5 lOQ said type bars are pivoted by ball bearings, a plurality of type bars being mounted on each hanger, the construction and arrangement of the parts and the connection of the type bars. to the hangers being such that the types are bearings, a plurality of type bars being mounted on each hanger, the connection of the type bars to the hangers being such that the pivots of the type bars are arranged in a skewed arc.

9. In a front strike typewriting mach ne,

the combination of a type bar se ment, a series of type bar hangers mounted onsaid segment, and a series of type bars piyoted to said hangeraeach of said han ers having a plurality of type bars pivoted t ereto, and the ban ers near the ends of the segment having t -e type bars pivoted thereto ofi set progressively, whereby the pivots are arranged in an are that is not circular.

Signed at Syracuse, in the county of Onondaga'and State of New York this 22 day of Aug. A. DQ1907.

HERBERT A. oARnAsTt Witnesses C. E. ToMLmsoN, Lmwoon A. MURRAY.

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