US1598375A - Typewriting machine - Google Patents

Description

Aug. 31 1926.

J. B. HOLDEN TYPEWRI T I NG MACHI NE INVENTOR X3. JMM' i o/b L 'ITORNEY Filed May 6, 1925 WITNESSES i? 7. M. W @0 4 i'atented Aug. 31, 192%,

JOSEPH B. HOLDEN, OF SYBAGUSE,

NET I YO @EHQE.

TYPEWRITING. HAUL-11H E.

Application filed May 6, 1&25.

My invention relates to paper controlling bails for typewriting machines, and its gen eral object is to provide a new and improved bail or pressure device, and one in which the pressure or tension of the bail rolls may be effectively regulated so as to produce uniformity of action and effect in paper feeding and controlling operations. More specifically, my invention is an improvement on the paper controlling bail disclosed and claimed in the prior application of Joseph Phelps, Ser, No. 27,281 filed May 1, 1925.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, combinations of devices and arrangements of parts hereinafter described and particularly pointed out in the appended claims.

In. the accompanying drawings which illustrate the preferred form of my invention.

Figure 1 is a fragmentary end view of the platen carriage of a No. (30 Smith Premier typewriting machine and its mounting, my novel paper controlling bail being shown applied to said carriage.

Figure 2 is a fragmentary front view of said bail and its mounting associated with the platen, the view being taken on the line of the arrow in Fig. 1.

Figure 3 is an enlarged fragmentary vertical sectional view taken on a plane substantially corresponding to the dotted line 1-1 in Fig. 2 and looking in the direction of the arrows at said line.

Figure 41- is a view corresponding generally to Fig. 3 but showing the bail rolls readjusted.

As will be seen from Fig. 1 of the drawing, the top plate 1 of the machine is surmounted by stationary brackets 2, spaced apart one at each side of the top plate. The brackets are only fragmentarily shown herein but are rearwardly curved or goosenecked as in the No. Smith Premier machine. Secured to the upper end portions of the brackets 2 by screws 3 is a stationary guide rail the lower portions of the brackets having secured to them by screws 5 a guide rail 6. The guide rails are parallel and are oppositely grooved to receive anti-friction rollers 7, which rollers cooperate also with grooves formed in the Serial No. 28,285.

top and bottom faces of a slide bar 8 comprised in a traveling platen carriage which further includes end bars 9 secured to and extending forward from the ends of the bar 8. The carriage or platen frame comprising the rear bar 8 and end bars 9 rotatably supports a cylindrical platen 10 pro- Vided with axle portions 11 and 12 which project from the ends of the platen and bear in the end bars 9. he usual line spacing devices are provided for turning the platen in its bearings, said platen rotating on an unvarying axis indicated in Fig. 2 by the dotted line The usual printing instrumentalities, not shown, cooperate with the front face of the platen. Paper feeding devices whereby the paper is advanced around the platen and up over the printing face thereof comprise pressure rollers lat and 15 which are conventionally shown in Figure 1.

The supporting devices for the paper controlling bail hereinafter described comprise a rod or bar 16 which is fixed on the platen frame by means comprising'binding screws 18 and 19 that are threaded into the rod 1 through the endbars 9 of the platen frame or carriage. Fixed rigidly to the rod 16 inside the left-hand end bar of the carriage is a forwardly extending arm or bracket member 21 which is provided with an angularly shaped extension or strengthening portion 22, the arm 21, 22 being keyed to the rod 16 so that it cannot turn thereon, and being also held or fixed against movement lengthwise of said rod. Fixed also to the rod 16 inside the carriage near its right hand end is a second supporting arm 22-3, said arm being further'stabilized by a screw pin 24 threaded through the end bar 9 a d engaging in a hole in the arm 28. The arm 23 terminates in line with the arm 21. the two arms providing supports for the bail or paper controlling contrivance, said supports being fixed relatively to the platen frame or carriage.

The pressure member or paper bail proper comprises a roll rod or bar 25, to the ends of which are rigidly secured short arms 26, the rod and arms constituting a roll carrying member. The arms are keyed on the ends of the rod and are secured in place by screws 27. ridjustably mounted on the rod 25 so lsFiSIGNGR TO REMINGTGN TYPEW'RITER that they may be slid to desired positions, are bail rolls, there being two such rolls in the present instance, numbered 28 and 29. The bail proper is mounted on the platen frame in a novel manner by means comprising what may be termed a linkage connection, said connection being constituted by a pair of arms or links 30 and their hub or stud portions 31. The rear or free ends of the arms 30 are formed with holes whereby the arms are enabled to fit loosely over the rod inside the associate bail arms 26. The stud portions '31 which have a keyed connection with the forward ends of the arms are secured in place by screws 32 and extend outward from the arms, terminating in squared or rectangular portions 33 which are separated from the body of the studs 31 by flanges 34%. The outer ends of the studs receive headed and shouldered screws 35 which pass through bearing openings in the associate arms 21 and 23 and are threaded tightly into the studs. the screws proi 'iding pivotal supports for the arms 30 and also for the entire bail or pressure contrivance when it is in operative condition that is, when the arms 30 and 26 are clamped together as hereinafter described. The center of rotation of said entire bail passes through the axes of the studs 31 and is fixed and unvarying relatively to the platen frame. As in the prior Phelps construction aforesaid, the bail is provided with hairpin springs 56 which are loosely mounted by screws 36 on arms 21 and 23 and co-operate with the squared portions 38 of the studs to maintain the bail contrivance in spring pressed relationship with the platen and also to hold it in inoperative or thrown-off positions away from the platen. The springs are confined loosely between the flanges 34 and the associate supporting arms. Said springs co-act with opposite corners of the squared portions 33 to hold the bail contrivance spring pressed to the platen. They engage with opposite parallel faces of the squared portions 33 to maintain the bail in thrown-oil or released positions. Secured in place by the right-hand screw 32 is a stop plate 37 provided with stop faces 38and 39 which are co-operative with a pin or stud 4C0 on the arm 23 to limit positively the rotary n'iovements of the right-hand arm 30 and consequently of the hail, the plate 37 turning with said arms 30. To manipulate the bail, the arms 30 are provided with extensions 30 which are shaped to form linger pieces by which the bail may be swung or turned into and out of operative position.

The arms 30 lie close against the short arms 26 of the bail proper with which they are adjustably connected by devices preferably in the form of screw and slot connections, the arms 30 being formed with transversely elongated holes 41 through which pass the shanks of beaded screws 42 that are threadel from the inside into the arms 26, as most clearly appears from Fig. 2. The screw heads abut agains the inner faces of tl e arms 30, and said screws when tightened serve to clamp or fix the associate arms 26 and 30 together. he connection ll, -12 allords adjustment in the relationship between the arms 30 and 26, such relationship being variab e at will and resulting in consequent variation in the normal relationship between the bail rolls and the platen transve 3* considered. i'ilter such adjustor re-adjustment, the screws on being 1 'ened clamp the pairs of arms 26 and 30 together, causing them to act as a unit. and in elf st constituting a single bail member comprising the bail rod 25 with its rolls, the two-part crank arms 26 and 30 and also the studs or pivotal portions 81, 33 and llcretofore dilliculty has been encountered in causir the bail rolls or pres ure devices to bear evenly against and cooperate uniforn'ily with the platen. This difiiculty may be due to several causes, such as variations in the platen surface, slight differences in the diameters of rolls thernselvcs slight dcviations of the bail rod from a. straight line, and the like. My present invention provides for conveniently and effectively adjusting the rolls tra sversely of the platen so that their normal position may be altered and they may bear uniformly on the platen, the means employed for this purpose not interfering with the stability and substantial construction of the bail coir trivanee as a whole. In order to illustrate the use to which the invention may be put, I have shown in Figures 2 and of the drawings the left-hand bail roll 28 hearing against the platen and the right-hand bail roll 29 separated from the platen so as to be ineffective. in this position of the parts, it will be observed that the bail rod axis, indicated in Fig. 2 by the dotted line g 7 is out of parallelism with the platen axis [L -d The separation. of the roll 29 is somewhat exaggerated for the sake of clearness of illustration. In order to adjust the parts in. proper normal relationship it is only necessary to loosen the right-hand clamping screw $2. This enables the righthand end portion of the rod 25 together with the crank arm 26 fixed thereto to be swung downward towards the platen and transversely or adially thereof until the right-hand roll 29 is brought into engage ment or contact with the platen surface in uniformity with the left-hand roll 28 as shown in Fig. 4. platen axis and the bail rod axis are broun l'lt into substantial parallelism. Dnr ing this downward swing. the angular relationship between the arms 26 and 30. is slightly altered, the forward end of the arm By this adjustment the 26 which carries the screw 42 moving downward in the hole or slot-way 41. At the same time the arm 30, acting in effect as a link, will swing downward about its fiXed center or axis 35. After the adjustment, the right-hand screw 42 is tightened, re clampingthe right-hand arms 26 and 30 together, thus rendering the bail operative and in condition such that its rolls 2% and 29 norn'ially exert a uniform tension and bear evenly against the platen as they turn or rotate on the rod :25. It will be understood, of course, that when necessary or desirable, the left-hand end portion of the bail also may be re-adjusted after the left-hand screw 42 is loosened; or that both screws may be loosened to afford re-adustment of the bail. The construction involving the two-part adjustable arms afford means to meet all requirements of re-adjustment that may be met with in practice, enabling the rolls to be moved towards and away from the platen surface, and thus providing for uniformity of pressure of the bail rolls and consequent even feeding of the work sheets. The bail rolls are in effect paper-pressing and feeding units, and the rod on which they are mounted is provided with means whereby each end may b adjusted independently of the other, thus affording independent adjustment of the pressure exerted by said units. Inother words, one of the paper pressing units may be adjusted to alter its pressure without materially affecting the pressure of another of said units.

The invention may readily be adapted to styles of machines other than that shown; and various changes may be made without departing from the invention.

What I claim as new and desire to secure by Letters Patent is 1. In a typewriting machine, the combi nation of a platen; a platen frame; a bail rotatable about an unvarying axis on said frame, said bail comprising side portions, a bail rod fixed at its ends to the side portions, and rolls on said rod; and means between the bail axis and the bail rod for adjusting said rolls towards and away from the surface of the platen to vary the normal relationship of the rolls and the platen.

2, In a typewriting machine, the combination of a platen, a platen frame, a bail pivoted thereon, the bail axis being unvarying and the bail rod being fixed to the side portions of the bail, and means for varying the normal relationship between the platen axis and the axis of the bail rod.

3. A paper controlling bail for typewriting machines comprising a bail rod and side arms, each side arm being composed of two parts that are relatively adjustable, and being provided with devices for maintain ing the two parts set in adjusted relation ships.

4, A paper controlling bail for typewritingmachines comprising a ball rod and side portions, means being provided for maintaining said bail rod in adjusted relationships relatively to said side portions.

5, In a typewriting machine, the combination of a platen, a platen frame, arms pivoted on said platen frame, a bail member comprising a rod and rigidly attached side arms, and devices for securing together said side arms and said first recited pivoted arms in set relationship.

6. In a typewriting machine, the combination of a platen, a platen frame, arms pivoted thereon, a bail member comprising a rod and arms rigidly attached to the ends of said rod, and screw and slot connections between said rigidly attached arms and said pivoted arms.

7. In a typewriting machine, the combination of a platen, a platen frame, a bail rod, rolls thereon, arms pivoted to said platen frame and having loose pivotal connections with said bail rod, and means for fixing said arms in variable relation with said bail rod.

8. In a typewriting machine, the combination of a platen, a platen frame, pressure rolls, a roll carrying member, arms pivoted to said platen frame and loosely connected with said roll carrying member at its ends, and means for variably fixing the relationship between said roll carrying member and said arms.

9. In a typewriting machine, the combi nation of a platen, a platen frame, pressure rolls, a roll carrying member, arms pivoted to said platen frame and loosely connected with said roll carrying member at its ends, and devices at each arm operating independently of each other for variably fixing the relationship between the arms and the bail member.

10. In a front strike typewriting machine, the combination of a platen, a platen frame, a roll carrying member, a plurality of rolls on said member cooperative with the platen above the printing line, spring-pressed arms loosely connected. with said member and extending forward therefrom, said arms being pivotally connected to the platen frame forward of the platen, and devices for securing the roll carrying member and said arms in set relationships, the arms being adjust-able independently of each other relatively to said roll carrying member.

11. In a typewriting machine, the combination of a platen, a platen frame, a bail member comprising a rod and arms rigidly fixed thereto, and a linkage connection between said platen frame and said bail member, said linkage connection having a normal relationship with said bail member that is adjustable at will.

12. In a typewriting machine, the combination of a platen, a platen frame, a bail member comprising a rod and arms rigidly fixed thereto, links connecting said bail member to said platen frame, and devices co-operating with said links and said arms for securing said links and said member in set relationship, said relationship being variable at will.

13. In a typewriting machine, the combination of a platen, a platen frame, a bail member comprising a rod and arms rigidly fixed thereto, links connecting said bail member to said platen frame, and clamping screws threaded into said arms and passing through enlarged openings in said links,

said screws being operative to variably clamp said links.

M. In a ty )ewrit-inig machine, the combination of a p aten, a rod arranged longitudinally of the platen and mounted to move to and from said platen, paper pressing and feeding units mounted on said rod, and vmeans for independently adjusting each end of the rod and thereby independently adjusting the pressure of said pressing and feeding units.

Signed at Syracuse, in the county of Onondaga and State of New York, this 2 day of May, A. D. 1925.

JOSEPH l3. HOLDEN,

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