US1525326A - Typewriting machine - Google Patents

Description

Feb. 3. 1925.

G. SEIB TYPEWRITING MACHINE Filed Feb. 28, 1923 INVENTEIF? HIE ATTEIHNEY Patented Feb. 3, 1925.

STATS? GEORGE A. SEIB, OF ILION, NEW YORK, ASSIGNOB, TO BEMINGTQN TYPEWRITER COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPEWEITING MACHINE.

Application filed February 28, 1923.

Y '0 all whom it may concern:

Be it known that I, Gnouen A. SEIB, citizen of the United States, and resident of Ilion, in the county of Herkimer and State of New York, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

lily invention relates to stop bar mountings for typewriting machines and its main object is to provide a new and improved mounting for such stop; bars and which will permit such stop bar to return readily to normal position it transversely displaced as the result of stresses during operation or from other causes.

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 claims.

In the accompanying drawings which will illustrate the preferred form of my invention, 7

Figure 1 is a fragmentary vertical sec-, tional view illustrating part of the carriage and tabulating mechanism of a typewriting finachine embodying my invention.

Figure 2 is a fragmentary rear elevation drawn to an enlarged scale and showing an end portion of a stop rack bar and its mountmg.

Figure 3 is a fragmentary top plan view of the stop rack bar with the mounting of the same, said figure being drawn to the same scale as Fig. 2; and

Figure 4 is a. perspective view of various parts comprised in the mounting of one of the end portions of the stop bar.

The carriage and tabulat'mg mechanism tragmentarily illustrated in Fig. 1 correspond with those found in the No. 10 Rem.- ington typewriting mac'ihine, although of course it is to be understood that this showing is merely illustrative of one form of the invention, the principles whereof may be embodied in other styles of writing machines. In the Remington No. 10 machine, the top plate 1 supports at its rear side a fixed guide rail 2 which co-operates through anti-friction rollers 8 with the rear bar 4 of a traveling platen carriage of the usual construction, .aid carriage further comprising forwardly extending end bars, the left-hand end bar 5 Serial No. 621,781.

alone being shown. Fixed to the rear carriage bar 4 near its ends by screws 6 are rearwardly extending supports or brackets 7, said brackets being inclined upward and rearward and terminating in horizontally disposed heads or cross portions 8 which are of thicker stock than the rearwardly pro jecting portions. The heads or horizontal portions 8 terminate at their outer ends in up-turned vertically disposed ears or end portions 9. A stop bar 10 formed at its front and rear sides with teeth 11 is supported on the brackets 7-9 in a. novel manner to be hereinafter fully described. Adjustably supported on the stop rack bar 10 is a set of column stops, each column stop 12 being provided with a rearwardly projecting stop lug 13, the lugs being arranged in stepped order or at progressively varying heights on the rear portions of the column stops 12, as is usual. Co-operative with the stepped column stops 12, 13 are a. set of key controlled column selecting frame stops in the form of plates 14 arranged vertically one above the other. in a frame or housing 15 secured to the main frame of the machine. The frame stops or plates 14 may be selectively projected forward into the paths of their associate stop lugs 18 by devices comprising lever members 16 which are actuated by the column selecting keys, said keys being also effective to release the traveling carriage from the control of the escapement mechanism, permitting it to run or be moved freely until arrested at the end of its tabulating movement by the projected frame stop 14, as is well understood. The column select- ..ing or tabulating mechanism above briefly described generally corresponds to that disclosed in my prior Patent No. 1,182,286 granted March 16, 1915.

As usually constructed heretofore, the column stop bar has been merely screwed down tigthtly on top of its brackets or supports, but it has been found in practice that this method of mounting the stop bar develops so much friction that when the stop bar is bent transversely or curved out of the straight line, as not infrequently happens during operation of the tabulating mechanism, it stays in the bent or distorted position, the excess friction on the supports tending to maintain this abnormal condi tion of the stop bar. In order to overcome this defect, I have provided by my present invention, a new and improved mounting for the stop bar comprising connections be tween it and its supports or brackets which permit it to swivel or pivot easily at the points of support, the result being that when crosswise strain is put on the rack bar by use of the tabulating mechanism or otherwise through undue pressure, the rack bar can yield and then spring back or return freely to its straight or normal position, the novel mounting preventing it from taking a permanent abnormal set and causing consequent trouble as in the prior construction. In carrying out my invention in the present instance, the under side of the stop bar 10 is provided near its ends with transverse slot-ways or cutouts indicated at 17 in which are loosely housed or arranged circular devices or collars 18. These collars arev interposed between the rack bar and'the top faces of the horizontal supporting portions 8 ot the brackets and are'of, suflicient thickness to keep the under face of 'therack bar separated from the top face of the portion 8 as will be clearly understood-from Fig. 2 wherein the clearance or space between the two parts is desi nated by the numeral 19. It will also be clear from- Fig. 2 that the periphery of the collar does not touch the side edges of the, slot-waysor cut-outs 17, the clearances here being designated by the numeral 20. In other words, the collars or separating devices 18 maintain the rack bar raised ciear of its supporting brackets, said collars at the same time being out of contact at their peripheries with other parts, the upper facesof'the collars contacting with the, rack bar and the bottom faces of the collars contacting with the underlying supports 8. As will be clear from Fig. 1, the collars 18 are perforated centrally as indicated at 21 to afiord' freepassage-way for a pivotal device shown detached'inFig. 4.- and designated as a whole by the numeral 22, said device being in the form of a shouldered screw or screw stud. Each screw stud 22 has a hexagonal head23, an upper portion 24, and lower portion 25 of lesser diameter connected to the upper portion by a shoulder 26, the portion 25being threaded at and near its lower end as indicatedat 2?. Each stud 22 passes freely through hole in the associate end portion of therack bar 10 as well asthrough the associate collar 18 and the horizontal thickened portion f the bracket. Below thebracket the threaded portion 27 of the screw stud projects downward and engaged loosely with this projecting threaded portion is. a washer or circular plate 28, said washer being interposed betweenthe bottom of the rack portion 8 and a hexagonal nut 29 which is threaded on the lower end of the stud and clamps the studin place. It will be seen more especially from Figs. 1 and 2, that the shoulder 26 of each stud rests on the topot' the associate collar 18, the result being that the tightening. of the nut 29 draws the shoulder down tightly against the top of the collar, clamping the collar between the shoulder and the top off the supporting portion 8 and clamping the washer 28 against the underside of said supporting portion. its a result of this construction, each stud 22 is fixed in place on its associate supporting bracket 79 and the associate portion of the rack bar lOis confinel between the under side of the head 23 ot the stud and the top face otthe collar 18.- The depth oi the stop bar at this point, or the vertical distance between the slot 'or under-cut 17 where it contacts with the top or the collar, and the top taceof said bar, is such that while the bar- 10 cannot move up and down on the studs, it may swivel or turn slightly on the upper portions 2-ithereof as pivots. in practice the holesin the bar are made slightly greater in diameter than the pivot portions 241- of the studs or bolts. As a result of this construction the stop bar mayyield or swivel between the two studs under transverse stresses resulting from tabulatingoperations or otherwise, permitting the bar to curve, bend or hex freelv and to return due toits resiliency to astraight line or nori'ual'position after being relieved of the stress or displacing action.

linorder to take up end thrust or stress oi the stop bar 10 resulting ordimirily from tabulat ng operations, adjustable devices or screws stops 80 are provided, these screw stops being threaded' inward through the vertical ears 9 of the brackets into position contiguous to the, curved outer ends 10 of the stop bar. Qheck nuts 31 are threaded on the screw stops 30 and abut against the outer faces or cars 9 to hold said stops 30 clan'iped in adjusted positions.

Various changes may be made without departing from ,my invention.

What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of a stop rack bar, a support therefor, and a swiveling connection betweensaid stop rack bar and-said support, the connection permittingthe barto swivel at-rightangles to its length and constantlyleaving the bar wholly free to swivel.

2. In a typewriting machine, the coinbination of astop rack; bar, means for, supporting said'bar near its ends, and a pair of swivelinqconnections spaced apart and interposed between said bar and said supporting means, said connections being at right-angles to the length of the'barand constantly leaving the bar wholly tree to swivel.

3. In a typewriting machine, the combina tion of a traveling carriage, a pair of brackets thereon, a stop rack bar mounted on said brackets, and swiveling connections between the end-portions of said bar and said brackets, said connections being at right-angles to the length of the bar and constantly leaving the bar wholly free to swivel.

4. In a typewriting machine, the combination of a releasable traveling carriage, a pair of brackets or arms thereon, a stop rack bar mounted on said brackets, swiveling connections between the end portions of said bar and said brackets, and tabulating mech anism comprising column stops adjustably mounted on said rack bar, and key actuated frame stops co-operative with said column stops, said connections permitting the bar to swing between its end portions at right angles to its length during the operation of said tabulating mechanism and also constantly leaving the bar wholly free to swivel.

5. In a typewriting machine, the combination of a traveling carriage; brackets thereon provided with horizontally disposed supporting portions, and vertical end portions; a stop bar; means for connecting said bar with said horizontally disposed portions of said brackets comprising a pair of studs passing through said bar near its end and through said brackets, and perforated collars interposed between said bar and said brackets, said studs passing freely through said collars; and stops secured adjustably in said vertical end portions of said brackets, said stops co-operating with the ends of said bar to take up end thrust.

6. In a typewriting machine, the combination of a releasable traveling carriage, a pair of supports thereon provided with vertical end portions, a stop rack bar mounted on said supports, swiveling connections between said bar and said supports, adjustable screw stops on the vertical end portions of said supports and co-operative with the ends of said rack bar, and tabulating mechanism comprising column stops on said rack bar and key actuated frame stops co-operative with said column stops, said swiveling connections permitting said rack bar to swing freely between its end portions during the operation of said tabulat-ing mechanism and said screw stops taking up end thrust of said rack bar when the carriage is arrested at the end of tabulating movements.

7 In a typewriting machine, the combination of a bar; a support therefor; and means for connecting said bar with said support comprising a stud passing transversely through said bar and said support, and a device interposed between said bar and said support and permitting relative rotary giovement between said support and said 8. In a typewriting machine, the combination of a stop bar provided at its under side with transverse slots near its ends; a support for said bar; and means for connecting said bar with said support, said means comprising perforated collars arranged in said slots and resting on said supports, and screw studs passing freely through said stop bar and said collars.

9. In a typewriting machine, the combination of a stop bar provided at its under side with transverse slots near its ends; a sup port for said bar; and means for connecting said bar with said support, said means comprising perforated collars arranged in said slots and resting on said supports, and shouldered screw studs passing freely through said stop bar and said collars and also through said brackets and having threaded ends projecting outside said brackets, said studs having shoulders resting on said collars, nuts on said threaded ends and washers interposed between said nuts and said brackets and adapted to be clamped by said nuts.

10. In a typewriting machine, the combination of a pair of brackets, a stop bar overlying said brackets, collars maintaining said bar separated from said brackets, and means for fixing said collars to. said brackets and for providing pivotal centers for said bar.

Signed at Ilion, in the county of Herkimer, and State of New York, this 21st day of February, A. D. 1923.

GEORGE A. SEIB. lVitnesses LINNIE F. BURNETT, H. J. KELLER.

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