US1027050A - Type-writing machine. - Google Patents

Description

2 8HEETS-SHEBT 1.

F. W. HILLARD. TYPE WRITING momma.

Patented May 21, 1912 APPLICATION FILED JAN.31. 1910.

H Q "9 NW 1 N I a I w Q MN b N .QN w Qw E. W. HILLARD.

TYPE WRlTING MACHINE.

APPLIOATION FILED JAILSI, 1910.

1,027,050, Patented May 21, 1912.

2 SHEETS-SHEET 2.

UNITED OFFICE.

FREDERIC \V. HILLARD, OF TOTTENVILLE, NEl/V YORK.

TYPE-\VRITING MACHINE.

Application filed January To all whom it may concern:

Be it known that l, .Fnnmuuo W. iinm- ARI), of 'lottenville, in the county of Richmend and State of New York, have in vented a certain new and useful Invention in 'l'y ye-lVriting Machines, oi? which the following is a specification.

My invention relates to the carriage and platen shift mechanism of visible-writing, typewriting machines, and has for its object to provide a simple, efficient and durable ball hearing or other antifrietion rolling device, for supporting the platen carriage and automatically adjusting it to wear by the overhanging weight of the carriage, whether the machine he one provided with only one character, or more than one character per type her; also to provide a simple, easily operated and reliable shifting mechanism forthe platen carriage in a machine having two or more characters per type bar.

. Figures 1 and 2 show a side elevation, partly in section, of my device for mounting'the overhung carriage on self-adjusting interposed rolling devices or hearing balls, which form the sole support for the earriage; and the' figures also show the earriage mounted on a vibrating shift frame to move to upper and lower case printing positions. Fig. 3 is a detail.

I do not deem furtherillustration neets sary because the device is'a Species of the genus shown in my pending application Sr. No. (303,845; filed August 25th, 18%; also because the mechanism is so simple as to be readily understood Without further illustration.

F i ''s. 1 and 2 differ from each other mere y in that in Fig. 1 the platen is nor malty in its lowest position, the overhang ing Weight of the platen being greater than the force of the lifting spring; whereas in Fig. 2 the reverse is true, namely, the spring, is'stronger than the overhanging weightand normally lifts the platen to its highest position. Hence tin Fig. l the lower case position is the lowest position of the platen, as there shown, while in Fig. 2 the lower case posit-ion is the highest position oil. the platen as shown in that figure. Otherwise the deseri )tlOIl of both figures is the same. The re erenee characters refer to same parts on both figures and both figures show the normal lower case printing position.

The carriage 1 is off thekind known as Specification of Letters Patent.

Patented May 21 1912.

1910. Serial No. 541,195.

overhung, mounted at the rear on hearing balls 2 and provided at the front with platen :3. The method of mounting the car riage on the hearing balls or interposed rolling devices is novel and mlvautageous. The upper bearing comprises a downwardly faring race-way lon the carriage and an opposable upwardly facing rare-way 5 in the shift frame (3. The raceways 4 and 5 and two interposed balls 2 (one being shown) are all mounted in the same vertical plane. )n the other hand the lower bearing is arranged in a horizontal plane, and consists of the rein'wardly facing raceway or bearing surface 7 on the carriage and the opposahle fl-outwardly facing race-way 8 in the shift frame, and the two interposed balls 2 (one being shown). Hence the rare-ways l. 5 and their balls are arranged in a plane at right angles to the plane of the race-ways 7 and 8 and their balls. l have shown the race-way 7 as a plane surface, but it may he V-shaped like the others if preferred.

I. intend to eniploy two halls in the upper race-whys and two in the lower race-ways, as usual, with the customary separating cages, not shown, and limit pins, not shown, to prevent escape of the balls from their race-ways and to hold them a f-properly spaced distance apart. Also to make the shiftframe (3 the same width as the lateral width of the carriage, so as to provide a snug, narrow machine in which the car riage, in its lateral movement. passes heyoud each end of the shift frame, owing to its mounting on the interposed rolling devices which travel only one-half the distance that the carriage does in feeding.

The shift frame (3 is mounted on two adjustable pivot screws i). one at each end of the shift frame, which are threaded into supports on the main frame 10, at each end of the shift frame. lretbrably the pivot screws 9 have cylindrical pivot bearings that are inserted into sockets in the shift frame, as shown in Fig. 3 and a hardened hall 11 is inserted at the bottom of each of said sockets, forming an anti frietion device in taking up end plat on the pivot bearings ot' the shift frame 0. Each pivot screw 5) is preferably provided with a lock out 12, and the two pivot screws are separable and adjustable with respect to each other. The shifting movement may be effected by any well known mechanism. I have illustrated i it as shifted by shift key 13, hey lever 14,

connecting wire 15, bell crank 16 and clownwarclly projecting lug;- 17 on the shift framev Normally in Fig. 1, the carriage and platen are held down printing position by the overbalancin'g weight of the platen, and register with lower case character a, but the lifting spring 18, tends to lift the carriage into the upper case printing position where the platen will register with upper case character b on the type bar A outlined in clotted lines; and when the'shift key 12 is depressed the spring 18 assists in the lifting movement. Fig. 1 engages stop screw 19 and upon the depression, of the shift key it is moved out of engagement with said screw 19 into en gafiement with stop screw 20. Screws 19 an 20 are adjustable and provided with lock nuts 21. Lifting spring .18 is shown as adjustable by means of three tied pin 22 and the, 'shiftihg movement the race-"ways and balls swing with the carriage and platen, the race-ways 4 and 5: and their bolls swing: ink; in ofiedirection and raceways 'i'iand 8 and their balls in. the opposite direct-ion.

Norma; ly in Fig. Pl the carriage and platen are held up in the lower case printing position by lifting spring 18, which moves the ripperenrl of the shift frame into contact, with adjustable stop screw 20. When the shift key 13 is depresseii the shift frame is rocked, moving the upper race-ways 1, 5

\mui their" balls forwardly and. they lower ace ways a and their halls reurwarrlly, nil swin 'ing the platen downwardly into position 'ior printing with the upper case type, this movemen."u being limited by enagement of the shift frame with the atl- 1ustable, lower stop screw 19.

The impact point for the type at the front of the platen, and the axis of the platen and the axis of the shift frame are all set in the same horizontal plo.n.e,'purzillel to the plane of the lower race-ways .7, 8 and their bulls, and at right angles to that of the upper race-ways 4, 5 and their balls. This. orrunge'ment gives u very rigid surface for the stroke of the type and particularly so on account of the frontword and backward fee in s of the lower race-ways, which thus ofior tlirect resisting surface to "the blow of the type bars. Gravity acts on. the overhung platen carriage to consiuntly Cl'GWll together both the upper race-ways and the lower race-ways, which would not be true of the lowcrrace-vmy s, were they upward! y and downwardly facing, instead. of forwardly and rearwurdly. Another advantage of my novel arrungemont'of race-ways that. they are yiehling and can separolo slightly. to allow the balls to ride over dirt or gmnmecl oil, etc, in the race-ways, which they-couhl vuntugeislthut in "my device the platen sists the blow of the typcbur, as in the old by gravity, since if there is any looseness-in the hearings, it

in the lower case- Normally the shift frame in are preferably atijusting nut 23. In

not do were both the upper and lower racewoys set in the same VGItlCfll'PlfiIlG, us 153 commonv and well known. Still another udreyle blind machines,

ell taken up in the lower race-ways and interposed bulls bythe weight of the overhung platen, swinging downwardly upon] the upper race-ways and their interposed balls as an axis and thus crowding the owor race-ways against their halls. Thus the blow off-the type key ;,con1es agai the platen rigid upon the lower bearings, and. if

1 it must be in the of the type be to there is any loosenessut a upper bearings, so tlmtth'e blow bar cannot move the pluteo unless lift it ugoinst'gravuy by swingiugut UP."

wartlly about. the lower bearings as on axis. Hence, my cylinder is practically as rigid to the hlmv of the type bar as is the olci style blind type of machine, 7'

It will be observed that there is shown in the lower bearing; a ii-shaped. race-way in the shift frame and an opposing plane verti cal surface for the balls on the carriage. This is an arrangement that automatically provides for wear and it is immaterial whether the \Lshapetl truck be in the frame and the plane track on the carriage, or the reverse arrangement with the Vehopedi track on. the carriage and the plane one in the frame, the two being equivalents of each other. Two ii-shaped ways may be employed if preferred in place of 7' and 8.

in order to prevent escape of the carriage from the shift frame, or escape of the balls,

I provide a groove 24 m the lower edge of 1% E il the carriage and. a centrally located. tongue 25 on the shift frame to enter said groove, there being a, little play so that the carriage will be wholly supported on the balls 2 and not atall on the tongue and groove. A piw otecl roller may be employed in placeof the tongue 25 for anti'- friction purposes, if pm ferred.

I have diagrammatically illustrutetl the type carrying end. of a type bar A showing the upper Z: and lower 0: case characters iiiwurtlly inclined toward each other, as is necessary in connection with a vibratory carriage. The propelling power, escopemeni, ribbon movement, type bur system, key lo vers therefor, etc, are not, illustrated, and it is not necessary tic "show them in order to illustrate my invention;

Having thus described my invent-iomwhat I claim and desire to secure by Letters Potent is 1- c 4 111 a front strike typewriter, the combination with u laterally-movable platen corrioge, of two sets of rollers on wrmhum core:

riuge runs, a vertically arranged race bar for the rollers, connected to the carriage and leyel between the having a downwardly facing race-wayamt the top and a rearwardly facing race-way at the bottom, an opposable vertically arranged shift frame for the rollers having an upwardly facing race-Way at the top and a frontwardly facing race-way at the bottom, the upper race-ways and interposed rollers being arranged in a vertical lane, the lower ones arranged in a horizontai plane, and the pivotal axes of the shift frame and platen and the impact point at the front of the platen arranged in a horizontal plane at a upper and lower raceways.

'2. In a :front strike typewriter, the combinationwith a laterally movable platen carriage, of two non-opposing race-Ways therein in the rear of the platen, a race bar having two raceways, non-opposing with respect to each other but oppositely disposed withrelation to the racewvays on the carriage, interposed rolling devices between said race-ways which entirely support the carriage and on which the carriage is adjusted to position .by gravity, and a locking device arrangcdto prevent escape of the carriage'and'interposed rolling devices from the race-ways. a

3; In afront strike typewriter, the combination with alatera'lly movable 'laten carriage, arranged and adapted to e held by gravity in one printing position, of two sets of rollers on which the carriage runs, a vertically arranged race-bar connected to the I carriage and having a downwardly facing race-way at the top, and a rearwardly fecing race-way at t e bottom, an opposable vertically arrangedshift'frame having an upwardly facing race-way at the top and'a :frontwardly facing race-way at the bottom, said rollers being interposed in said raceways, and a s ring connecting the shift frame to the mam frame and tending to'lift the platen to another printing position.

4. In a front strike writing machine, the combination with the machine frame and a.

ing devices in the race ways, and a spring connecting the race bar to the machine frame, and constantly tending' to lift the. 55

carriage and to revolve ohe set of race ways in one direction and the other one in the opposite direction.

In testimony whereof, I aflix my signature in the presence of two subscribin wltnesses.

FREDERIC W. H LARD. Witnesses:

L. VREELAND,

B. E. VREELAND.

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