US753348A - Typewriter alining mechanism - Google Patents

Description

- No. 753,348.p

NO MODEL. 7

PATENTED MAR. l 1904. J. ALEXANDER.

TYPE WRITER ALINING MECHANISM.

APPLICATION FILED DEC. 1, 1902.

SUNITED, STATES Patented. March 1,1904.

AT NT OFFICE.

:JEssE ALEXANDER; OFBROOKLYN; NEW'YQBK', ASSIGNOR-OF ONE-HALF TO ERIC NILSON, on NEW YORK, N. Y., AND nmus AUGUST LAFRENTZ;

F BROOKLYN, NEW YORK.

TYPE-WRITER ALINING lVlECHANISM.

srncrrrcnzrron forming part of Letters Patent 110.759.3 18, dated M ra. 1. 1 904. Applioatioii filed December 1, 1902. SerialNo. 133,433. (NnmodeL) To all whom it may concern/. Beit knownthatI. J nssn ALEXANDER,a1 citizen of the United States, residing at Brooklyn, v

in the county of Kings, State'of NewYork,

have invented certain new and useful Improvements in Type-Writer.AliningMechanism, of

which the following is a full, clear, and exact description. p

My invention relates totype-writihg ma- I chines, and particularly to mechanism for perfecting the proper alinement and adjustment of the printing mechanism.

The construction herein shown and described is designed specially for use with a ma 1 5 chine of the class in which a carriage carrying a rotatable platen moves from side to side of) I the machine and the printed matter-nappears on a horizontal line. In machines of this class it is desirable that means shall be provided in which the printingposition of each type may be adjusted to suit varying conditions of construction and repair. The typebarmechanism is therefore provided, with a means by which theprinting position may be '25 horizontally adjusted or varied and.the,ver-

tical position altered. as necessity may de- .mand; It is the object of my invention to provide such an adjustment which may be readily 3 eiiected and which will involve as little fricti grlial resistance to the operating parts as possi e. l

The construction is simple and will be found eflicient under the many conditions of use to "which the machine may be subjected. p The invention will be found to consist in Y the improvements hereinaftenidgsgribed, and

shown in the accompanying drawingsiior perfecting the adjustment hereinbeforemen- 4 tioned. H l v Figure 1 is a vertical projection of parts of a machine embodying my invention. Fig. 2 is a rear elevation of the same parts. Fig. 3 is a cross-section and elevation of mechanism embodying my improvements, together with the associated parts of the carriage construc: tion and type bar movement. Fig. 4 is a fragmentary detail of thehorizontalalining "tion which coacts with thehorizontal alining .tical alinement.

11 operates an adjusting-screw 41 for adjustmechanism. v Fig. 5 is.a detail of a'construcmechanism. Y. a z

'1 is that'portion of the construction which I will term the type-bar plate. This is substantially the segment of a circle and'is adapted, as will appear, to'support the mech anism for embodyingthe horizontal and ver-.

Qnth'e'froHt of this plate are pivoted two '"posts 2 2zby means of the screws 20 20. Projecting from theouter side of each of these posts is an arm 21, by'which the position of each may be secured and varied, as desired, relatively to. each other and the plate 1. 22 is a'screw passing through the upper portion of this extension 'arm 213ml taking into the plate ,1.

23 is a wedge which is slotted, as shown in Fig. 5. The screw 22 passes through theslot,

so that the adjustment of the position of the post 2 may be effected by loosening the screw 22 and moving the wedge 23 until a firm bearing-support isprovided, as desired. The actual'point of contact between the type-bar 3 and alining-posts occurs between the adjacent faces of the balls 24 24:. Each ball is mounted 'in a recess in the top of the post 2 and pro-. 7 5" vided with a helical spring 25 and set-screw 26 for holding. the same [yieldingly in its opera tive position. "The elasticity of the spring 25 j is sufficient to cause t'he ball 24 to press-fore ward and'provide-a rather, firm point of conprinting. The ball, however, is "slightly avoided. p

Each type-bar is provided with a pivot 31 and mounted in an adjusting-block 4, as shown particularly in Figs. 1. and 3. The block is slotted, as appearing at 40, and is mounted on the type-bar plate 1 to coincide substantially with a slotted portion 10 of the type-bar plate. 11 is aprojecting rib; In this projection ing the position of the block 4; in a substan- 8 tact for' the portion of the type-bar? which I slips by the same just prior to the instant of i i tially radial' line. The spring 42 tends to force the b1ock4 outward radially when permitted so to do by the positionfof the adjusting-screw 41.

Through thei'back of the type-bar plate 1" passes a securing-screw 43, which takes into the adjusting-block 4 for the purpose of holding it in place against the type-bar plate inv the position desired. In order to permit the radial adjustment before mentioned, the shank of the screw passes through a slotted portion 12 in the type-bar plate. The radial position, therefore, of the block 4, and consequently the vertical printing position .ofthe typeblock, may be adjusted by loosening the screw 1 5 I -bar, which is operated by the action of the typc-liar and spacer mechanism, as'is usual.

It is unnecessary, however, further to refer to these mechanisms in this application, since this refers particularly to the alinement mech- Einism already described.

What I 'claimf 'is '1. An aliningdevice for type-writing machines including atype-bar plate, a pair of guide-post's, each post havingza recess in its end, a guide-ball in each recess, a helical spring for each ball for holding it in position, adjusting-screws operating in said posts for said springs and for adjusting their tension, said posts being pivoted to said plate.

- 2. .An alining device for type-writing ma chines including a type-bar, plate, a pair of guide-posts, each post having a recess in its end, a guide-ball in each recess, a helical spring for each ball for holding itin position, an ad-.

justing-screw operating in said 'post'for said springs, said posts being pivoted to said plate,

an extension-arm from one of said'posts, an

ad usting-wedge cooperating therewith, and a screw'passing through said 'arm and taking into said plate. 4

3. Ahorizontal alining device for a typewriting machine including a-plate, a pair of guide-posts pivotally mounted thereon, extension-arms from said posts and wedge-shaped adjusting devices coeperating with said ex tensions.

4. Alin'i'nglmechanism for a type-writing machine including atype-bar plate, radiallya'djustable pivotblocks,*means for adjusting thesame, and securing-screws, said type-bar plate having radial slots in which said securing-screws operate.

I 5. A vertical alining mechanism for type-' writing machines including a type-bar plate,

a ridge projecting therefrom, pivot-carrying blocks mountedon said plate and adjustable radially with respect thereto, means for effecting the adjustmentof said blocks and securing-screws coacting with said blocks, said plate being slotted topermit the tightening of said screws at different radial positions of said blocks; -6. A verticalalining mechanism for a typewriting machine including a type-bar plate, radially 7 adjustable pivot carrying blocks mounted thereon, screws and helical springs for effecting their adjustment, .a securingscrew for each of said blocks for looking it in position, said plate being slotted to permitof the radial movement'of said securing-screws. 7. .A'vertical alining mechanism for a typewriting machine including a type-bar plate,

radiallyadjustable pivot a carrying blocks mounted thereon, screws and helical springs for effecting their adjustment, a securingscrew for each of said-blocks for locking it in position, said plate being slotted to permit of the radial movement of said securing-screws, all combined'with' a horizontal alining mechanism including yieldingly-mounted rotatable and adjustable guide-balls.

' JESSE ALEXANDER.- Witnesses: I I

L. VREELAND, R. S. ALLYN.

Images